Pub Date : 2023-08-31DOI: 10.31462/jseam.2023.03224235
C. Sarıçam, N. Okur, N. Uçar, N. Gürsoy
In this study, the effects of the addition of Activated carbon powder (ACP), Polyacrylonitrile nanofiber web (PAN), application of Plasma treatment (P), and the number of treatment layers on thermal insulation and sound absorption properties of fibrous structures have been examined and compared to each other. Bamboo and E-glass fibers have been used to produce fibrous layered structures. E-glass-based fibrous structures had slightly higher thermal resistance than that of bamboo fiber-based fibrous structures. However, sound absorption of bamboo-based fibrous layered structures was higher than that of E-glass fiber-based fibrous layered structures. The results revealed that plasma treatment, nanofiber web application, and activated carbon powder insertion increased the thermal resistance of fibrous layered structures made of bamboo fiber and E-glass fiber. In particular, the plasma treatment on three layers provided the highest thermal resistance for the E-glass fiber fibrous layered structure, however, PAN nanofiber application between three layers resulted in the highest thermal resistance for the bamboo fiber fibrous layered structure. Concerning sound absorption, the PAN nanofiber web provided the highest improvement for both the bamboo fiber-based layered structures and the E-glass-based layered structures.
{"title":"Thermal insulation and sound absorption properties of fibrous layered structures","authors":"C. Sarıçam, N. Okur, N. Uçar, N. Gürsoy","doi":"10.31462/jseam.2023.03224235","DOIUrl":"https://doi.org/10.31462/jseam.2023.03224235","url":null,"abstract":"In this study, the effects of the addition of Activated carbon powder (ACP), Polyacrylonitrile nanofiber web (PAN), application of Plasma treatment (P), and the number of treatment layers on thermal insulation and sound absorption properties of fibrous structures have been examined and compared to each other. Bamboo and E-glass fibers have been used to produce fibrous layered structures. E-glass-based fibrous structures had slightly higher thermal resistance than that of bamboo fiber-based fibrous structures. However, sound absorption of bamboo-based fibrous layered structures was higher than that of E-glass fiber-based fibrous layered structures. The results revealed that plasma treatment, nanofiber web application, and activated carbon powder insertion increased the thermal resistance of fibrous layered structures made of bamboo fiber and E-glass fiber. In particular, the plasma treatment on three layers provided the highest thermal resistance for the E-glass fiber fibrous layered structure, however, PAN nanofiber application between three layers resulted in the highest thermal resistance for the bamboo fiber fibrous layered structure. Concerning sound absorption, the PAN nanofiber web provided the highest improvement for both the bamboo fiber-based layered structures and the E-glass-based layered structures.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115115788","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 : 2023-08-31DOI: 10.31462/jseam.2023.03249256
Gözdenur Ulu, İkilem Göcek
In this study, different types of polymeric layers were coated in different weights (g/m2) on nonwoven fabrics by extrusion process and then, sound absorption and transmission loss properties of each sample were examined. Nonwoven fabrics were produced from polyester (PET) fiber, formed by the carding process and bonded by the needle punching process. These samples were tested between 50-6000 Hz frequency range to reveal the effect of polymer layer type and weight coated on nonwoven fabrics on the sound absorption and transmission loss performance at the low, medium, and high-frequency values. Polymer layers were coated with the weight of 400 gsm and 800 gsm. Nonwoven fabric samples coated with polyethylene or polypropylene layers and nonwoven fabric samples without polymeric coating were tested by using an impedance tube and compared in terms of sound absorption and transmission loss performance. In the test system, two sides of the samples were tested separately. It was seen that the sound absorption performance of the samples changed in case the sound wave was first incident to the polymeric layer or nonwoven layer.
{"title":"Examination of acoustic properties of polymer-coated nonwoven textile samples","authors":"Gözdenur Ulu, İkilem Göcek","doi":"10.31462/jseam.2023.03249256","DOIUrl":"https://doi.org/10.31462/jseam.2023.03249256","url":null,"abstract":"In this study, different types of polymeric layers were coated in different weights (g/m2) on nonwoven fabrics by extrusion process and then, sound absorption and transmission loss properties of each sample were examined. Nonwoven fabrics were produced from polyester (PET) fiber, formed by the carding process and bonded by the needle punching process. These samples were tested between 50-6000 Hz frequency range to reveal the effect of polymer layer type and weight coated on nonwoven fabrics on the sound absorption and transmission loss performance at the low, medium, and high-frequency values. Polymer layers were coated with the weight of 400 gsm and 800 gsm. Nonwoven fabric samples coated with polyethylene or polypropylene layers and nonwoven fabric samples without polymeric coating were tested by using an impedance tube and compared in terms of sound absorption and transmission loss performance. In the test system, two sides of the samples were tested separately. It was seen that the sound absorption performance of the samples changed in case the sound wave was first incident to the polymeric layer or nonwoven layer.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116569862","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 : 2023-08-31DOI: 10.31462/jseam.2023.03257263
G. Başer
The widespread use of carbon-fiber-reinforced plastics (CFRP) has attracted many industries such as defense, and aerospace as well as in sailboats, automotive, and rotor-blades, where high strength-to-weight ratios are required. For the aerospace and defense customer today, the importance is no longer just on minimum weight and therefore performance, but primarily on cost of ownership. Textile-manufactured composites, particularly of non-crimp fabric (NCF) type offer significant cost savings in terms of reduced labor time and higher deposition rates over the unidirectional prepreg tape which is the most traditional method. Vacuum vacuum-assisted infusion method is the most used production technic in CFRP parts which also offers high fiber ratios. The most important goal is the impregnation of carbon fiber package in a through-the-thickness direction to get good quality parts in infusion. The behavior of the impregnability depends mainly on the out-of-plane permeability of the fabric. The fiber type, orientation of the fibers, and the stitching parameters, mainly influence the permeability of the fabric. In this study, the influence of textile parameters on the out-of-plane permeability of UD (unidirectional) carbon fiber NCF was investigated. The stitching yarn parameters (stitch pattern, stitch tension, and stitch length) were varied to see the influence on the out-of-plane permeability. The out-of-plane permeability was measured using a tailored visual flow front monitoring method by measuring resin flow distance on the X and Y axes of the fabric during infusion. The results show that the out-of-plane permeability of the UD (0°) carbon fiber NCF is significantly affected by the stitch pattern, stitch tension, and stitch length.
{"title":"Influence of carbon fiber non-crimp fabrics stitching parameters on the out-of-plane permeability in liquid composite molding process","authors":"G. Başer","doi":"10.31462/jseam.2023.03257263","DOIUrl":"https://doi.org/10.31462/jseam.2023.03257263","url":null,"abstract":"The widespread use of carbon-fiber-reinforced plastics (CFRP) has attracted many industries such as defense, and aerospace as well as in sailboats, automotive, and rotor-blades, where high strength-to-weight ratios are required. For the aerospace and defense customer today, the importance is no longer just on minimum weight and therefore performance, but primarily on cost of ownership. Textile-manufactured composites, particularly of non-crimp fabric (NCF) type offer significant cost savings in terms of reduced labor time and higher deposition rates over the unidirectional prepreg tape which is the most traditional method. Vacuum vacuum-assisted infusion method is the most used production technic in CFRP parts which also offers high fiber ratios. The most important goal is the impregnation of carbon fiber package in a through-the-thickness direction to get good quality parts in infusion. The behavior of the impregnability depends mainly on the out-of-plane permeability of the fabric. The fiber type, orientation of the fibers, and the stitching parameters, mainly influence the permeability of the fabric. In this study, the influence of textile parameters on the out-of-plane permeability of UD (unidirectional) carbon fiber NCF was investigated. The stitching yarn parameters (stitch pattern, stitch tension, and stitch length) were varied to see the influence on the out-of-plane permeability. The out-of-plane permeability was measured using a tailored visual flow front monitoring method by measuring resin flow distance on the X and Y axes of the fabric during infusion. The results show that the out-of-plane permeability of the UD (0°) carbon fiber NCF is significantly affected by the stitch pattern, stitch tension, and stitch length.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123072891","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 : 2023-08-31DOI: 10.31462/jseam.2023.03264267
Melis Meldem Eksen
The use of fiber-reinforced thermoplastic composite materials is increasing day by day due to their high strength and recyclability. In addition to these superior advantages, high melt viscosity is among the disadvantages of these materials because it makes reinforcement absorption difficult. This problem can be solved by using hybrid yarns in which reinforcement and thermoplastic fibers are homogeneously mixed for the production of thermoplastic composites. This study, it was aimed to prepare basalt fiber/PET hybrid yarns containing basalt fiber in different volume ratios by air-jet mixing method and to prepare thermoplastic composite materials by pressing from fabrics woven from hybrid yarns. By determining the mechanical properties of basalt fiber/PET thermoplastic composites prepared to contain basalt fiber in different proportions by volume, the effects of basalt fiber amount in hybrid yarn blends on the mechanical properties of the composite material were examined and the most appropriate basalt fiber amount was determined.
{"title":"Production and characterization of basalt fiber/pet composites","authors":"Melis Meldem Eksen","doi":"10.31462/jseam.2023.03264267","DOIUrl":"https://doi.org/10.31462/jseam.2023.03264267","url":null,"abstract":"The use of fiber-reinforced thermoplastic composite materials is increasing day by day due to their high strength and recyclability. In addition to these superior advantages, high melt viscosity is among the disadvantages of these materials because it makes reinforcement absorption difficult. This problem can be solved by using hybrid yarns in which reinforcement and thermoplastic fibers are homogeneously mixed for the production of thermoplastic composites. This study, it was aimed to prepare basalt fiber/PET hybrid yarns containing basalt fiber in different volume ratios by air-jet mixing method and to prepare thermoplastic composite materials by pressing from fabrics woven from hybrid yarns. By determining the mechanical properties of basalt fiber/PET thermoplastic composites prepared to contain basalt fiber in different proportions by volume, the effects of basalt fiber amount in hybrid yarn blends on the mechanical properties of the composite material were examined and the most appropriate basalt fiber amount was determined.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127157010","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 : 2023-08-31DOI: 10.31462/jseam.2023.03236248
Engin Akçagün, Nuray Öz Ceviz, Abdurrahim Yılmaz
The primary aim of this study is to investigate the competitive landscape and profitability prospects of the Turkish Composite Industry. To accomplish this objective, the research employs the Five Force Model framework developed by Michael E. Porter. A survey instrument was designed to collect data from companies operating within the Turkish Composite Industry. The results reveal that the industry exhibits a low susceptibility to substitution, a moderate level of buyer bargaining power, and a medium to high level of supplier bargaining power. With the presence of both large and small firms, competition among existing competitors is deemed high, while entry barriers are considered moderate to high.
本研究的主要目的是调查竞争格局和盈利前景的土耳其复合工业。为了实现这一目标，本研究采用了Michael E. Porter开发的五力模型框架。设计了一种调查工具，从土耳其复合材料工业内经营的公司收集数据。研究结果表明，该行业具有较低的替代敏感性、中等水平的买方议价能力和中高水平的供应商议价能力。由于大型和小型公司的存在，现有竞争者之间的竞争被认为是高的，而进入壁垒被认为是中等到高的。
{"title":"Competitive analysis of the Turkish composite industry by using the five forces model: A case study","authors":"Engin Akçagün, Nuray Öz Ceviz, Abdurrahim Yılmaz","doi":"10.31462/jseam.2023.03236248","DOIUrl":"https://doi.org/10.31462/jseam.2023.03236248","url":null,"abstract":"The primary aim of this study is to investigate the competitive landscape and profitability prospects of the Turkish Composite Industry. To accomplish this objective, the research employs the Five Force Model framework developed by Michael E. Porter. A survey instrument was designed to collect data from companies operating within the Turkish Composite Industry. The results reveal that the industry exhibits a low susceptibility to substitution, a moderate level of buyer bargaining power, and a medium to high level of supplier bargaining power. With the presence of both large and small firms, competition among existing competitors is deemed high, while entry barriers are considered moderate to high.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-08-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124167304","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 : 2023-07-13DOI: 10.31462/jseam.2023.02117128
Meryem Karakurt, Korhan Özgan
Structures can be exposed to non-linear deformations under earthquake effects. However, linear methods are mostly preferred for designs because of their simplicity and facility. The inelastic behavior of the structure is approximately taken into account by using some coefficients. However, it is possible to make more realistic and economical designs by using methods that consider the inelastic behavior of the structure. In this context, the displacement-based design method is becoming increasingly popular. This study evaluates the seismic performance of steel frames resting on elastic foundations with different beam-column joint stiffnesses using the static pushover analysis method. Static pushover curves, plastic deformations, performance points, and base shear forces were compared. The results show that the base condition greatly affects the seismic performance of the building.
{"title":"Effects of beam-column connection rigidities and soil-structure interaction on seismic performance of steel frames","authors":"Meryem Karakurt, Korhan Özgan","doi":"10.31462/jseam.2023.02117128","DOIUrl":"https://doi.org/10.31462/jseam.2023.02117128","url":null,"abstract":"Structures can be exposed to non-linear deformations under earthquake effects. However, linear methods are mostly preferred for designs because of their simplicity and facility. The inelastic behavior of the structure is approximately taken into account by using some coefficients. However, it is possible to make more realistic and economical designs by using methods that consider the inelastic behavior of the structure. In this context, the displacement-based design method is becoming increasingly popular. This study evaluates the seismic performance of steel frames resting on elastic foundations with different beam-column joint stiffnesses using the static pushover analysis method. Static pushover curves, plastic deformations, performance points, and base shear forces were compared. The results show that the base condition greatly affects the seismic performance of the building.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121194940","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 : 2023-07-13DOI: 10.31462/jseam.2023.02140156
Arda Uzunömeroğlu, I. Topcu
One of the greatest issues in today's world is the elimination of industrial disposal materials. To solve this problem, recycling waste has become a necessity in many countries according to regulations. Induction furnaces are systems where the heat is generated by induced currents by the electromagnetic field. Every production cycle, the system generates 15% of by-products as slag. In the present study, induction furnace steel slags are replaced with coarse aggregate at the ratios of 0, 50, and 100% in concrete samples with 150×150×150 mm size. The Los Angeles abrasion test, compressive strength test, and density calculations were made. Samples were also subjected to electronic and optical systems such as SEM, EDX, and XRD to determine the surface and microanalysis. This experimental study shows that utilizing induction furnace steel slag increased the physical and mechanical properties of concrete. The addition of these slags in concrete will allow the efficient usage of natural resources as well as the production of economical concrete. Due to their composition, the slags have high abrasion resistance and density compared to ordinary aggregates. For this reason, increasing the ratio of steel slags in concrete may result in the formation of heavy concrete.
{"title":"Mechanical and durability characteristics of concrete containing induction furnace steel slag as an alternative to coarse aggregates","authors":"Arda Uzunömeroğlu, I. Topcu","doi":"10.31462/jseam.2023.02140156","DOIUrl":"https://doi.org/10.31462/jseam.2023.02140156","url":null,"abstract":"One of the greatest issues in today's world is the elimination of industrial disposal materials. To solve this problem, recycling waste has become a necessity in many countries according to regulations. Induction furnaces are systems where the heat is generated by induced currents by the electromagnetic field. Every production cycle, the system generates 15% of by-products as slag. In the present study, induction furnace steel slags are replaced with coarse aggregate at the ratios of 0, 50, and 100% in concrete samples with 150×150×150 mm size. The Los Angeles abrasion test, compressive strength test, and density calculations were made. Samples were also subjected to electronic and optical systems such as SEM, EDX, and XRD to determine the surface and microanalysis. This experimental study shows that utilizing induction furnace steel slag increased the physical and mechanical properties of concrete. The addition of these slags in concrete will allow the efficient usage of natural resources as well as the production of economical concrete. Due to their composition, the slags have high abrasion resistance and density compared to ordinary aggregates. For this reason, increasing the ratio of steel slags in concrete may result in the formation of heavy concrete.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134410997","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 : 2023-07-13DOI: 10.31462/jseam.2023.02129139
Ş. Erten
The masonry construction system consists of stone, brick, and mortar, in which the wall element acts as the vertical load load-bearing and generally allows low-rise buildings. The buildings built with this system are mostly seen in rural areas today, but also in traditional and historical textures in city centers. Stone, brick, mortar, etc. used in the masonry construction system. The materials are materials with a low stretching rate but are resistant to pressure. In this case, against the driving force of a possible horizontal load source, the bearing walls will inevitably be damaged because they do not allow sufficient oscillation. In Türkiye, earthquake-resistant building design principles and calculation methods related to the behavior of masonry structures against earthquakes are guiding at this point. Inspecting the masonry structures planned and built in the past in terms of compliance with today's conditions and regulations is important for the sustainability of the structure. Making a building that has a negative profile in terms of compliance with the masonry construction rules is important for both the structure and the health of the user. In this study, the compliance of the load-bearing walls in the architectural design of the old Harbiye Barracks building, which is currently used by the Faculty of Architecture of Trakya University, to the rules regarding the wall design in the current regulation, Türkiye Building Earthquake Code 2018, is investigated. As a result of the study, it was seen that the building showed different suitability in different blocks. While the occupancy-to-space ratio of the b block on the bearing wall is better, it has been determined that the block does not fully comply with the rules.
{"title":"Evaluation of the load-bearing wall design of Edirne Old Harbiye Barracks according to the Turkish Building Earthquake Code (TBEC-2018)","authors":"Ş. Erten","doi":"10.31462/jseam.2023.02129139","DOIUrl":"https://doi.org/10.31462/jseam.2023.02129139","url":null,"abstract":"The masonry construction system consists of stone, brick, and mortar, in which the wall element acts as the vertical load load-bearing and generally allows low-rise buildings. The buildings built with this system are mostly seen in rural areas today, but also in traditional and historical textures in city centers. Stone, brick, mortar, etc. used in the masonry construction system. The materials are materials with a low stretching rate but are resistant to pressure. In this case, against the driving force of a possible horizontal load source, the bearing walls will inevitably be damaged because they do not allow sufficient oscillation. In Türkiye, earthquake-resistant building design principles and calculation methods related to the behavior of masonry structures against earthquakes are guiding at this point. Inspecting the masonry structures planned and built in the past in terms of compliance with today's conditions and regulations is important for the sustainability of the structure. Making a building that has a negative profile in terms of compliance with the masonry construction rules is important for both the structure and the health of the user. In this study, the compliance of the load-bearing walls in the architectural design of the old Harbiye Barracks building, which is currently used by the Faculty of Architecture of Trakya University, to the rules regarding the wall design in the current regulation, Türkiye Building Earthquake Code 2018, is investigated. As a result of the study, it was seen that the building showed different suitability in different blocks. While the occupancy-to-space ratio of the b block on the bearing wall is better, it has been determined that the block does not fully comply with the rules.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"112 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127312081","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 : 2023-07-13DOI: 10.31462/jseam.2023.02157166
A. Altunışık, F. Sunca, M. Yılmaz
In this study, engineering software for the calculations of the strengthening applications of reinforced concrete (RC) load-bearing elements with Fiber Reinforced Polymer (FRP) composite materials is developed. This software is developed to increase the axial compression strength and ductility capacity of columns and improve the shear capacity of beams using FRP material according to provisions of the Turkısh Building Earthquake Code 2018 (TBEC-2018). In addition, this software offers designers the opportunity to perform calculations to increase the bending moment capacity of beams using FRP composite material, according to the American Concrete Institute 440-2R.17 (ACI 440-2R.17). Algorithms to be used to increase the capacities of RC load-bearing elements with FRP composite materials are formed according to the provisions of the mentioned codes. Then, computer and web-based engineering software with different coding languages are developed depending on these algorithms.
{"title":"Engineering software development for strengthening concrete structures using fiber-reinforced polymers","authors":"A. Altunışık, F. Sunca, M. Yılmaz","doi":"10.31462/jseam.2023.02157166","DOIUrl":"https://doi.org/10.31462/jseam.2023.02157166","url":null,"abstract":"In this study, engineering software for the calculations of the strengthening applications of reinforced concrete (RC) load-bearing elements with Fiber Reinforced Polymer (FRP) composite materials is developed. This software is developed to increase the axial compression strength and ductility capacity of columns and improve the shear capacity of beams using FRP material according to provisions of the Turkısh Building Earthquake Code 2018 (TBEC-2018). In addition, this software offers designers the opportunity to perform calculations to increase the bending moment capacity of beams using FRP composite material, according to the American Concrete Institute 440-2R.17 (ACI 440-2R.17). Algorithms to be used to increase the capacities of RC load-bearing elements with FRP composite materials are formed according to the provisions of the mentioned codes. Then, computer and web-based engineering software with different coding languages are developed depending on these algorithms.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114266603","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 : 2023-07-13DOI: 10.31462/jseam.2023.02195223
İbrahim Emrah Katmer, Tuğçe Sevil Yaman
People have built structures to survive and to meet their shelter needs. While buildings had progressed horizontally at first, the increase in population and shrinkage of spaces over time led the construction industry to build multi-story buildings. In the research, the Turkish Building Earthquake Code 2007 (TBEC-2007) and the Turkish Building Earthquake Code 2018 (TBEC-2018) were extensively examined and an 8-story steel business center building having high ductility levels in both directions and consisting of concentrically braced steel frames was designed according to the two earthquake codes. The Equivalent Static Method was utilized while designing according to the codes. For structural elements’ dimensioning, the Regulation on Design, Calculation, and Construction Principles of Steel Structures principles were followed and the Load and Resistance Factor Design Method was utilized. After performing the analyses of the building according to both earthquake codes, the effects of the code differences on the system periods, earthquake loads, lateral displacements, the story drifts, second-order effects, A1 type torsional irregularities, B2 type stiffness irregularities, and dimensioning of the elements were evaluated in detail. It was observed that in TBEC-2018 compared to TBEC-2007, the structure’s coordinates are determined more specifically while identifying the earthquake load, more sensitive soil options are presented, separate calculations according to building height are performed, and base shear forces are smaller. Moreover, it was deduced that there was no significant variance between the codes in terms of calculations of building importance coefficient, natural vibration period, story drifts, and irregularities.
{"title":"Design of a multi-story steel building according to the Turkish Building Earthquake Codes: TBEC-2007 vs. TBEC-2018","authors":"İbrahim Emrah Katmer, Tuğçe Sevil Yaman","doi":"10.31462/jseam.2023.02195223","DOIUrl":"https://doi.org/10.31462/jseam.2023.02195223","url":null,"abstract":"People have built structures to survive and to meet their shelter needs. While buildings had progressed horizontally at first, the increase in population and shrinkage of spaces over time led the construction industry to build multi-story buildings. In the research, the Turkish Building Earthquake Code 2007 (TBEC-2007) and the Turkish Building Earthquake Code 2018 (TBEC-2018) were extensively examined and an 8-story steel business center building having high ductility levels in both directions and consisting of concentrically braced steel frames was designed according to the two earthquake codes. The Equivalent Static Method was utilized while designing according to the codes. For structural elements’ dimensioning, the Regulation on Design, Calculation, and Construction Principles of Steel Structures principles were followed and the Load and Resistance Factor Design Method was utilized. After performing the analyses of the building according to both earthquake codes, the effects of the code differences on the system periods, earthquake loads, lateral displacements, the story drifts, second-order effects, A1 type torsional irregularities, B2 type stiffness irregularities, and dimensioning of the elements were evaluated in detail. It was observed that in TBEC-2018 compared to TBEC-2007, the structure’s coordinates are determined more specifically while identifying the earthquake load, more sensitive soil options are presented, separate calculations according to building height are performed, and base shear forces are smaller. Moreover, it was deduced that there was no significant variance between the codes in terms of calculations of building importance coefficient, natural vibration period, story drifts, and irregularities.","PeriodicalId":151121,"journal":{"name":"Journal of Structural Engineering & Applied Mechanics","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-07-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121679986","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}
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