Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).epe-13
Mohammad Ilbeigi
Previous research convincingly demonstrates that incorporating active and collaborative instructional methods, along with effective strategies to foster student engagement, consistently yields improved learning outcomes. However, conventional educational programs in construction engineering and management are often inflexible, providing limited opportunities for students to actively participate in experiential learning that could contribute to firsthand experience and guide them in finding solutions. This study addresses this gap by developing and empirically evaluating an innovative gamified pedagogical approach aimed at teaching linear scheduling through guided active exploration within a digital gaming environment. The proposed approach and its associated game are grounded in constructivist learning theory. A scenario-based interactive game named Zebel was created using the Unity game engine. Employing a set of pre-and post-assessment tools, the proposed method was implemented and assessed in a graduate-level course on construction planning and scheduling to gather empirical data. The results indicate that the proposed pedagogy effectively guided students, even those without prior knowledge of linear scheduling, in discovering fundamental concepts and systematic solutions for the presented problems.
{"title":"TEACHING LINEAR SCHEDULING THROUGH GAMIFIED ACTIVE EXPLORATION","authors":"Mohammad Ilbeigi","doi":"10.14455/isec.2024.11(1).epe-13","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).epe-13","url":null,"abstract":"Previous research convincingly demonstrates that incorporating active and collaborative instructional methods, along with effective strategies to foster student engagement, consistently yields improved learning outcomes. However, conventional educational programs in construction engineering and management are often inflexible, providing limited opportunities for students to actively participate in experiential learning that could contribute to firsthand experience and guide them in finding solutions. This study addresses this gap by developing and empirically evaluating an innovative gamified pedagogical approach aimed at teaching linear scheduling through guided active exploration within a digital gaming environment. The proposed approach and its associated game are grounded in constructivist learning theory. A scenario-based interactive game named Zebel was created using the Unity game engine. Employing a set of pre-and post-assessment tools, the proposed method was implemented and assessed in a graduate-level course on construction planning and scheduling to gather empirical data. The results indicate that the proposed pedagogy effectively guided students, even those without prior knowledge of linear scheduling, in discovering fundamental concepts and systematic solutions for the presented problems.","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"238 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140275729","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).sus-07
Oscar Patricio Jaramillo de León, Wilson Oswaldo Cando Tipán, Andrés Fernando Quel Guerón, John David Flores David
Using recycled concrete has gained significant attention as a sustainable solution to reduce the environmental impact of construction waste. However, the mechanical properties of recycled concrete require thorough research to ensure its structural reliability. In this study, the objective was to determine the strength of concrete with PVC. A widely used material in most civil works is PVC, which is used in pipes and accessories for the project's hydro sanitary system. When the work is finished, a lot of PVC waste is discarded and is not recycled. In this research, the physical-mechanical properties of concrete are evaluated, using a dosage where the coarse aggregate is replaced by recycled and crushed PVC, in percentages ranging from 3% to 9%, mainly analyzing its behavior against compression and flexion at the age of 28 days, and obtaining its elastic modulus. The results obtained allow us to determine if the PVC added to the concrete mix gives us favorable results (greater compression and bending strength) or unfavorable results (higher costs, concrete slump, etc.)
{"title":"ANALYSIS OF THE PHYSICAL-MECHANICAL PROPERTIES OF CONCRETE USING RECYCLED PVC AND AGGREGATES","authors":"Oscar Patricio Jaramillo de León, Wilson Oswaldo Cando Tipán, Andrés Fernando Quel Guerón, John David Flores David","doi":"10.14455/isec.2024.11(1).sus-07","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).sus-07","url":null,"abstract":"Using recycled concrete has gained significant attention as a sustainable solution to reduce the environmental impact of construction waste. However, the mechanical properties of recycled concrete require thorough research to ensure its structural reliability. In this study, the objective was to determine the strength of concrete with PVC. A widely used material in most civil works is PVC, which is used in pipes and accessories for the project's hydro sanitary system. When the work is finished, a lot of PVC waste is discarded and is not recycled. In this research, the physical-mechanical properties of concrete are evaluated, using a dosage where the coarse aggregate is replaced by recycled and crushed PVC, in percentages ranging from 3% to 9%, mainly analyzing its behavior against compression and flexion at the age of 28 days, and obtaining its elastic modulus. The results obtained allow us to determine if the PVC added to the concrete mix gives us favorable results (greater compression and bending strength) or unfavorable results (higher costs, concrete slump, etc.)","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"82 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140277231","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).rad-06
Aynur Hurriyet Turkyilmaz, Gul Polat, A. Gurgun
This study presents a bibliometric analysis of the existing literature on risk perception in the construction industry. The aims are to discover patterns, significant topics, and the progression of research on risk perception. The study includes academic publications, such as journal articles, conference papers, and book chapters. The data was acquired from articles indexed on Scopus. VOSviewer was utilized to construct a co-occurrence network using the bibliographic data acquired, and a Sankey diagram was formed to investigate publication trends. Four major study clusters were found, encompassing risk management, safety, construction workers, and prevention actions, all within the context of risk perception in construction research. The current rising research topics related to risk perception in construction are occupational and project safety, construction workers, and human resources. The outcomes of this study can provide comprehension of risk perception in construction and research direction by emphasizing the importance of integrating management, safety, workers, and prevention action perspectives while offering new areas for further exploration regarding risk perception in the construction industry.
{"title":"RISK PERCEPTION IN THE CONSTRUCTION INDUSTRY: A BIBLIOMETRIC REVIEW","authors":"Aynur Hurriyet Turkyilmaz, Gul Polat, A. Gurgun","doi":"10.14455/isec.2024.11(1).rad-06","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).rad-06","url":null,"abstract":"This study presents a bibliometric analysis of the existing literature on risk perception in the construction industry. The aims are to discover patterns, significant topics, and the progression of research on risk perception. The study includes academic publications, such as journal articles, conference papers, and book chapters. The data was acquired from articles indexed on Scopus. VOSviewer was utilized to construct a co-occurrence network using the bibliographic data acquired, and a Sankey diagram was formed to investigate publication trends. Four major study clusters were found, encompassing risk management, safety, construction workers, and prevention actions, all within the context of risk perception in construction research. The current rising research topics related to risk perception in construction are occupational and project safety, construction workers, and human resources. The outcomes of this study can provide comprehension of risk perception in construction and research direction by emphasizing the importance of integrating management, safety, workers, and prevention action perspectives while offering new areas for further exploration regarding risk perception in the construction industry.","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"39 3","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140271543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).csa-04
A. Al-Bayati, Elin Jensen, Ricardo Eiris, Osama Abudayyeh
For many years, the National Institute for Occupational Safety and Health (NIOSH) and construction safety experts have advocated for implementing the Prevention through Design (PtD) concept in the United States. PtD aims to eliminate construction hazards during the design phase to prevent or reduce occupational injuries, illnesses, and fatalities during the construction phase. PtD is achieved by incorporating prevention considerations into all designs that may impact workers' safety. Civil and architectural engineers are considered the primary initiators of PtD in the construction industry, with the ability to educate project owners and construction practitioners about its benefits and importance. However, this group has a few, if any, educational interventions or training opportunities to develop PtD knowledge and skills in the United States. As a result, faculty members who may be willing to teach the PtD concept in their design courses (e.g., concrete, steel, foundation and traffic design courses) have limited exposure to the PtD concept and no clear guidelines to integrate PtD into their courses. This study surveys engineering department chairs in the United States to assess their perceptions about integrating PtD into the engineering curriculum. The findings showed that most participants do not favor incorporating PtD as a standalone course in the engineering curriculum. However, they expressed their support for integrating the concept as small modules within existing engineering design courses. Faculty members, teaching engineering design, should be provided the necessary resources to achieve this. This study contributes to our understanding of PtD integration strategies within engineering programs.
{"title":"INTEGRATING PREVENTION THROUGH DESIGN (PTD) INTO ENGINEERING CURRICULA","authors":"A. Al-Bayati, Elin Jensen, Ricardo Eiris, Osama Abudayyeh","doi":"10.14455/isec.2024.11(1).csa-04","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).csa-04","url":null,"abstract":"For many years, the National Institute for Occupational Safety and Health (NIOSH) and construction safety experts have advocated for implementing the Prevention through Design (PtD) concept in the United States. PtD aims to eliminate construction hazards during the design phase to prevent or reduce occupational injuries, illnesses, and fatalities during the construction phase. PtD is achieved by incorporating prevention considerations into all designs that may impact workers' safety. Civil and architectural engineers are considered the primary initiators of PtD in the construction industry, with the ability to educate project owners and construction practitioners about its benefits and importance. However, this group has a few, if any, educational interventions or training opportunities to develop PtD knowledge and skills in the United States. As a result, faculty members who may be willing to teach the PtD concept in their design courses (e.g., concrete, steel, foundation and traffic design courses) have limited exposure to the PtD concept and no clear guidelines to integrate PtD into their courses. This study surveys engineering department chairs in the United States to assess their perceptions about integrating PtD into the engineering curriculum. The findings showed that most participants do not favor incorporating PtD as a standalone course in the engineering curriculum. However, they expressed their support for integrating the concept as small modules within existing engineering design courses. Faculty members, teaching engineering design, should be provided the necessary resources to achieve this. This study contributes to our understanding of PtD integration strategies within engineering programs.","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"237 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140274412","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).cpm-08
A. Al-Bayati, Salman Alanazy
Corruption poses a significant ethical challenge within the construction sector, which is often characterized as one of the most susceptible industries to corrupt practices. Corruption has a substantial negative impact on the quality and effectiveness of construction projects. In an effort to address this issue, the authors conducted a comprehensive literature review to identify effective strategies for reducing corruption in the construction industry. Employing the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) framework, the researchers meticulously assessed 19 relevant peer-reviewed articles. The review yielded a set of six key measures that can be employed to mitigate corruption within construction workplaces. These measures encompass regulatory, administrative, compliance, promotional, investigative, and disciplinary strategies. Accordingly, the study provides a thorough explanation of these identified measures, offering valuable insights for construction practitioners and policymakers alike in their battle against corruption. Consequently, this research makes a substantial contribution to the field of construction engineering and management.
{"title":"CONSTRUCTION ANTICORRUPTION MEASURES: A LITERATURE REVIEW","authors":"A. Al-Bayati, Salman Alanazy","doi":"10.14455/isec.2024.11(1).cpm-08","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).cpm-08","url":null,"abstract":"Corruption poses a significant ethical challenge within the construction sector, which is often characterized as one of the most susceptible industries to corrupt practices. Corruption has a substantial negative impact on the quality and effectiveness of construction projects. In an effort to address this issue, the authors conducted a comprehensive literature review to identify effective strategies for reducing corruption in the construction industry. Employing the Preferred Reporting Items for Systematic Reviews and Meta-Analysis (PRISMA) framework, the researchers meticulously assessed 19 relevant peer-reviewed articles. The review yielded a set of six key measures that can be employed to mitigate corruption within construction workplaces. These measures encompass regulatory, administrative, compliance, promotional, investigative, and disciplinary strategies. Accordingly, the study provides a thorough explanation of these identified measures, offering valuable insights for construction practitioners and policymakers alike in their battle against corruption. Consequently, this research makes a substantial contribution to the field of construction engineering and management.","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"67 2","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140275916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The analysis of fly ash (FA) as a substitute for Portland cement aims to corroborate its influence on the compressive and flexural strength in hydraulic concrete. The aggregates used were characterized by ASTM standards and the concrete was designed according to ACI for a f’c of 4000 psi. Dosing with FA was used in mass substitution percentages from 10% to 30%. The results at 28 days in compression are 5360 psi without replacement, 3760 psi for 10% of mass replacement, 4770 psi with 15% of mass replacement, 3810 psi with 20% of mass replacement, 3820 psi with 25% of mass replacement and 2470 psi with 30% of mass replacement. The 28-day flexural results were 660 psi without replacement, 630 psi with 10% of mass replacement, 660 psi with 15% of mass replacement, 660 psi with 20% of mass replacement, 650 psi with 25% of mass replacement and 490 psi with 30% of mass replacement. Therefore, the use of FA as a substitute for Portland Cement Structural
{"title":"THE USE OF FLY ASH AS A SUBSTITUTE FOR PORTLAND CEMENT IN HYDRAULIC CONCRETE","authors":"Krizia Isabella Bustillo Portillo, Jurgen Estuardo Martinez Carrillos, Michael Job Pineda Canales","doi":"10.14455/isec.2024.11(1).mat-05","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).mat-05","url":null,"abstract":"The analysis of fly ash (FA) as a substitute for Portland cement aims to corroborate its influence on the compressive and flexural strength in hydraulic concrete. The aggregates used were characterized by ASTM standards and the concrete was designed according to ACI for a f’c of 4000 psi. Dosing with FA was used in mass substitution percentages from 10% to 30%. The results at 28 days in compression are 5360 psi without replacement, 3760 psi for 10% of mass replacement, 4770 psi with 15% of mass replacement, 3810 psi with 20% of mass replacement, 3820 psi with 25% of mass replacement and 2470 psi with 30% of mass replacement. The 28-day flexural results were 660 psi without replacement, 630 psi with 10% of mass replacement, 660 psi with 15% of mass replacement, 660 psi with 20% of mass replacement, 650 psi with 25% of mass replacement and 490 psi with 30% of mass replacement. Therefore, the use of FA as a substitute for Portland Cement Structural","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"72 8","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140282442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).sus-09
The present research is based on improving the stability, resistance to moisture degradation and fire resistance of molded soil blocks for use in housing construction. The main objective was to include fibers obtained from the shell of the coconut fruit and slaked lime. The methodology includes a prior characterization of the materials using the Eades and Grim method (ASTM D6276), density test, Atterberg limits and granulometric study; and then combine the fiber and lime into a local soil matrix. It is then subjected to water absorption and erosion tests, and is also subjected to direct fire. The results reveal that the additions of 0.5% fiber and 7% lime showed changes in the weight of the blocks, at the same time improvements in the resistance to water absorption and also good fire resistance. Finally, the results are compared with the scientific literature consulted, in order to correlate them with each other.
{"title":"INFLUENCE OF THE ADDITION OF LIME ON A MATRIX EARTH REINFORCED WITH COCONUT FIBER","authors":"","doi":"10.14455/isec.2024.11(1).sus-09","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).sus-09","url":null,"abstract":"The present research is based on improving the stability, resistance to moisture degradation and fire resistance of molded soil blocks for use in housing construction. The main objective was to include fibers obtained from the shell of the coconut fruit and slaked lime. The methodology includes a prior characterization of the materials using the Eades and Grim method (ASTM D6276), density test, Atterberg limits and granulometric study; and then combine the fiber and lime into a local soil matrix. It is then subjected to water absorption and erosion tests, and is also subjected to direct fire. The results reveal that the additions of 0.5% fiber and 7% lime showed changes in the weight of the blocks, at the same time improvements in the resistance to water absorption and also good fire resistance. Finally, the results are compared with the scientific literature consulted, in order to correlate them with each other.","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"452 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140283024","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).aae-08
César Gabriel Ferro, María Mercedes Andrade
Felix Escrig’s cover for the San Pablo Swimming Pool in Seville is one of the few examples of an actual application of a biaxial mesh of pantographs in Architecture. A structure that can contain space, easily transforming from a planar surface into a double curvature one, is rarely used as a solution to cover grand areas. In addition, most deployable structures use industrialized components with almost negligible dimensional variations. Analyzing Escrig’s structure with help from both physical and digital models, it is possible to understand its mechanical behavior and the changes in mesh morphology during the deployment process. These models showed how the biaxial mesh suffered some important angular deformations due to the rods and nodes adapting to the double-curvature shape during deployment, resulting in rod and node fatigue, which needed to be addressed before adapting the geometry to a heterogeneous material. This paper describes the geometric implications of using common reed (Phragmites australis) in the construction of double curvature deployable structures, examining the behavior of this heterogeneous material if employed on the manufacture of both rods and nodes. Using a scale model built from an adapted design, the geometry of the reed structure was tested. The heterogeneity of the reed required a redesign of the pivots of the blades and the nodes. This redesign showed that it is possible to use common reed for the construction of deployable double-curvature structures if certain mechanical design considerations, detailed as guidelines in this paper, are observed.
{"title":"TESTING PHRAGMITES AUSTRALIS FOR DOUBLE CURVATURE DEPLOYABLE STRUCTURES","authors":"César Gabriel Ferro, María Mercedes Andrade","doi":"10.14455/isec.2024.11(1).aae-08","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).aae-08","url":null,"abstract":"Felix Escrig’s cover for the San Pablo Swimming Pool in Seville is one of the few examples of an actual application of a biaxial mesh of pantographs in Architecture. A structure that can contain space, easily transforming from a planar surface into a double curvature one, is rarely used as a solution to cover grand areas. In addition, most deployable structures use industrialized components with almost negligible dimensional variations. Analyzing Escrig’s structure with help from both physical and digital models, it is possible to understand its mechanical behavior and the changes in mesh morphology during the deployment process. These models showed how the biaxial mesh suffered some important angular deformations due to the rods and nodes adapting to the double-curvature shape during deployment, resulting in rod and node fatigue, which needed to be addressed before adapting the geometry to a heterogeneous material. This paper describes the geometric implications of using common reed (Phragmites australis) in the construction of double curvature deployable structures, examining the behavior of this heterogeneous material if employed on the manufacture of both rods and nodes. Using a scale model built from an adapted design, the geometry of the reed structure was tested. The heterogeneity of the reed required a redesign of the pivots of the blades and the nodes. This redesign showed that it is possible to use common reed for the construction of deployable double-curvature structures if certain mechanical design considerations, detailed as guidelines in this paper, are observed.","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"31 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140269021","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).gfe-01
Juan-Sebastian Baquero, Gustavo Chafla Altamirano
Over the past few decades, scientists have dedicated considerable attention to investigating the impact of soil-structure interaction (SSI) on buildings’ performance. It is now widely recognized that these interaction effects can either positively or negatively influence a building's response to seismic events. Regarding the seismic design of buildings following standard prescriptions and accounting for SSI effects, ASCE 7, for example, guides through the modification process of the design forces obeying the interacting soil-structure system (SSS) behavior in an oversimplified manner. Nevertheless, no recommendations are made for adequately estimating inelastic displacements (IDs) focused on the design process. In an effort to rectify these limitations, this study examines the inelastic displacement response of ductile RC buildings while incorporating the influence of SSI. In that sense, a database of 3D-model structures with varying in-plan and elevation geometries as well as different supporting soil characteristics were generated and later assessed using OpenSeesPy as the modeling and analysis engine. Nonlinear dynamic analyses were executed accounting for flexible-base and fixed-base conditions as per ASCE 41, and their inelastic displacements are used to generate estimation models. The Gradient Boosting Regression Tree (GBRT) technique from machine learning (ML) is used in accomplishing this aim. It was observed that the wave parameter σ, along with the flexible-to-fixed base design shear force ratio, V*, are enough to explain up to 90% of the variation in IDs in the estimation model.
{"title":"INELASTIC DISPLACEMENTS MACHINE-LEARNING-BASED ESTIMATIONS FOR THE RC-BUILDINGS SEISMIC DESIGN CONSIDERING SSI EFFECTS","authors":"Juan-Sebastian Baquero, Gustavo Chafla Altamirano","doi":"10.14455/isec.2024.11(1).gfe-01","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).gfe-01","url":null,"abstract":"Over the past few decades, scientists have dedicated considerable attention to investigating the impact of soil-structure interaction (SSI) on buildings’ performance. It is now widely recognized that these interaction effects can either positively or negatively influence a building's response to seismic events. Regarding the seismic design of buildings following standard prescriptions and accounting for SSI effects, ASCE 7, for example, guides through the modification process of the design forces obeying the interacting soil-structure system (SSS) behavior in an oversimplified manner. Nevertheless, no recommendations are made for adequately estimating inelastic displacements (IDs) focused on the design process. In an effort to rectify these limitations, this study examines the inelastic displacement response of ductile RC buildings while incorporating the influence of SSI. In that sense, a database of 3D-model structures with varying in-plan and elevation geometries as well as different supporting soil characteristics were generated and later assessed using OpenSeesPy as the modeling and analysis engine. Nonlinear dynamic analyses were executed accounting for flexible-base and fixed-base conditions as per ASCE 41, and their inelastic displacements are used to generate estimation models. The Gradient Boosting Regression Tree (GBRT) technique from machine learning (ML) is used in accomplishing this aim. It was observed that the wave parameter σ, along with the flexible-to-fixed base design shear force ratio, V*, are enough to explain up to 90% of the variation in IDs in the estimation model.\u0000","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"573 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140281713","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-03-01DOI: 10.14455/isec.2024.11(1).hos-01
José Adolfo Ramos, Sergio Alonso Sunley, Mary Patrice Méndez de Hasbun, Julio Alfredo Samayoa, José Carlos Hasbun
Recycling plastic materials may constitute a relief measure to the global plastic problem. Several companies are now producing recycled plastic for use as construction material in single-story houses. One commercially available layout involves assembling Recycled Plastic Lumber units in a running bond pattern, forming panels confined by horizontal and vertical tie elements joined through bolted steel plate connections. As production of houses is industrialized, the architectural layouts are standardized according to specific distribution and dimensions. This paper presents the findings of an experimental program aimed to characterize the seismic behavior and properties of a one-story house model. To facilitate practical application, the model is referred here as Architectural Standard Model (ASM). The objectives of the test campaign were to investigate the structural behavior of the constituting members and assemblies, and the response of structural walls to cyclic static lateral loads. Three natural scale wall specimens were tested in-plane and two out of plane. Results of natural scale cyclic loading tests demonstrated that structural system of the ASM can perform acceptably safely under high seismic loads if it is adequately fixed to the foundation. The results showed that out of plane loading was the critical pattern and behaved like a unidirectional plate that transmitted load to the columns. In plane observed behavior exhibited predominating rocking component, which suggests considering an evaluation of the system's response using dynamic methods.
{"title":"EXPERIMENTAL STUDY ON THE STRUCTURAL BEHAVIOR OF RECYCLED PLASTIC ONE STORY HOUSES","authors":"José Adolfo Ramos, Sergio Alonso Sunley, Mary Patrice Méndez de Hasbun, Julio Alfredo Samayoa, José Carlos Hasbun","doi":"10.14455/isec.2024.11(1).hos-01","DOIUrl":"https://doi.org/10.14455/isec.2024.11(1).hos-01","url":null,"abstract":"Recycling plastic materials may constitute a relief measure to the global plastic problem. Several companies are now producing recycled plastic for use as construction material in single-story houses. One commercially available layout involves assembling Recycled Plastic Lumber units in a running bond pattern, forming panels confined by horizontal and vertical tie elements joined through bolted steel plate connections. As production of houses is industrialized, the architectural layouts are standardized according to specific distribution and dimensions. This paper presents the findings of an experimental program aimed to characterize the seismic behavior and properties of a one-story house model. To facilitate practical application, the model is referred here as Architectural Standard Model (ASM). The objectives of the test campaign were to investigate the structural behavior of the constituting members and assemblies, and the response of structural walls to cyclic static lateral loads. Three natural scale wall specimens were tested in-plane and two out of plane. Results of natural scale cyclic loading tests demonstrated that structural system of the ASM can perform acceptably safely under high seismic loads if it is adequately fixed to the foundation. The results showed that out of plane loading was the critical pattern and behaved like a unidirectional plate that transmitted load to the columns. In plane observed behavior exhibited predominating rocking component, which suggests considering an evaluation of the system's response using dynamic methods.","PeriodicalId":477265,"journal":{"name":"Proceedings of International Structural Engineering and Construction","volume":"576 ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140282968","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：