Pub Date : 2021-01-01DOI: 10.7712/120121.8585.18678
Francesca Autiero, G. D. Martino, M. Ludovico, A. Prota
{"title":"SEISMIC BEHAVIOR OF ARCHAEOLOGICAL MULTIDRUM COLUMNS AT THE POMPEII SITE","authors":"Francesca Autiero, G. D. Martino, M. Ludovico, A. Prota","doi":"10.7712/120121.8585.18678","DOIUrl":"https://doi.org/10.7712/120121.8585.18678","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"3 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87128572","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 : 2021-01-01DOI: 10.7712/120121.8653.18891
C. Riascos, S. Klopov, J. Marulanda, P. Thomson, G. Serino
{"title":"REAL-TIME HYBRID SIMULATION OF A STRUCTURE WITH CIRCULAR FIBER REINFORCED ISOLATORS","authors":"C. Riascos, S. Klopov, J. Marulanda, P. Thomson, G. Serino","doi":"10.7712/120121.8653.18891","DOIUrl":"https://doi.org/10.7712/120121.8653.18891","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"1 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88315120","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 : 2021-01-01DOI: 10.7712/120121.8765.19225
K. Kapasakalis, Georgios Florakis, I. Antoniadis, E. Sapountzakis
{"title":"SEISMIC PROTECTION OF MULTI-STORY STRUCTURES WITH NOVEL VIBRATION ABSORPTION DEVICES COMBINING NEGATIVE STIFFNESS AND INERTER","authors":"K. Kapasakalis, Georgios Florakis, I. Antoniadis, E. Sapountzakis","doi":"10.7712/120121.8765.19225","DOIUrl":"https://doi.org/10.7712/120121.8765.19225","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"33 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82934896","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 : 2021-01-01DOI: 10.7712/120121.8669.18668
T. Chrysanidis, V. Panoskaltsis
{"title":"ANALYTICAL INVESTIGATION OF THE TENSILE EXPERIMENTS MODELING THE ELONGATION DEGREE OF R/C WALLS FOR STUDYING THE LATERAL BUCKLING PHENOMENON","authors":"T. Chrysanidis, V. Panoskaltsis","doi":"10.7712/120121.8669.18668","DOIUrl":"https://doi.org/10.7712/120121.8669.18668","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"25 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89133931","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 : 2021-01-01DOI: 10.7712/120121.8773.18525
Aldo Milone, A. de Martino
Riveted connections are the most common structural details of existing steel bridges. Due to the increase of traffic loads as respect to the conditions at their erection time, existing riveted bridges are usually characterized by structural deficiencies and prone to fatigue damages. Moreover, the structural inadequacies are often magnified by the presence of peculiar constructional defects (i.e. shank misalignment, forged head distortion), which induce local stress concentrations that further reduce the service life. In this paper, the behaviour of riveted lap shear connections under static and cyclic actions is investigated by means of finite element (FE) simulations. The investigated connections are representative of typical geometries of the details of actual existing railway bridges. FE models were calibrated against the results of former tests drawn from literature. In addition, the FE models allowed at investigating the influence of constructional imperfections on the ultimate static and fatigue resistance and of the connections. In order to widen the parametric study, the following parameters are varied, namely: (i) number of rivets, (ii) diameter of rivet shank, (iii) thickness and width of the plates.
{"title":"BEHAVIOUR OF LAP SHEAR RIVETED CONNECTIONS WITH CONSTRUCTIONAL IMPERFECTIONS","authors":"Aldo Milone, A. de Martino","doi":"10.7712/120121.8773.18525","DOIUrl":"https://doi.org/10.7712/120121.8773.18525","url":null,"abstract":"Riveted connections are the most common structural details of existing steel bridges. Due to the increase of traffic loads as respect to the conditions at their erection time, existing riveted bridges are usually characterized by structural deficiencies and prone to fatigue damages. Moreover, the structural inadequacies are often magnified by the presence of peculiar constructional defects (i.e. shank misalignment, forged head distortion), which induce local stress concentrations that further reduce the service life. In this paper, the behaviour of riveted lap shear connections under static and cyclic actions is investigated by means of finite element (FE) simulations. The investigated connections are representative of typical geometries of the details of actual existing railway bridges. FE models were calibrated against the results of former tests drawn from literature. In addition, the FE models allowed at investigating the influence of constructional imperfections on the ultimate static and fatigue resistance and of the connections. In order to widen the parametric study, the following parameters are varied, namely: (i) number of rivets, (ii) diameter of rivet shank, (iii) thickness and width of the plates.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"19 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80704702","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 : 2021-01-01DOI: 10.7712/120121.8713.18672
Elena Simoni, N. Buratti, C. Mazzotti
In the immediate aftermath of an earthquake, it is essential that emergency plans and damage scenarios are available so that civil protection agencies and risk-management organizations can detect and contain critical situations. These tools rely on the knowledge of the specific features of the potentially affected area, both in terms of intrinsic characteristics (e.g. morphology, near surface geology, etc.) and of elements at risk (e.g. building typologies, population distribution, etc.). All these pieces of information are combined in seismic-risk or damage scenario assessment procedures. This paper presents a framework developed for estimating seismic damage scenarios for the Emilia Romagna region in Northern Italy. Models for estimating ground-motion shake maps, based on regional attenuation relationships, spatial correlation models and soil data are first presented. These maps, which are computed considering different ground-motion intensity measures, are then combined with data on the spatial distribution of buildings, and fragility models. In order to consider the different sources of uncertainty, i.e. ground-motion intensity, definition of the fragility models, etc., a Monte Carlo simulation approach is used for estimating the distribution of buildings with different damage levels in each municipality. Finally, the paper presents comparisons with damage data observed after the 2012 Emilia earthquake.
{"title":"A FRAMEWORK FOR THE ASSESSMENT OF SEISMIC DAMAGE SCENARIOS IN THE EMILIA-ROMAGNA REGION, ITALY","authors":"Elena Simoni, N. Buratti, C. Mazzotti","doi":"10.7712/120121.8713.18672","DOIUrl":"https://doi.org/10.7712/120121.8713.18672","url":null,"abstract":"In the immediate aftermath of an earthquake, it is essential that emergency plans and damage scenarios are available so that civil protection agencies and risk-management organizations can detect and contain critical situations. These tools rely on the knowledge of the specific features of the potentially affected area, both in terms of intrinsic characteristics (e.g. morphology, near surface geology, etc.) and of elements at risk (e.g. building typologies, population distribution, etc.). All these pieces of information are combined in seismic-risk or damage scenario assessment procedures. This paper presents a framework developed for estimating seismic damage scenarios for the Emilia Romagna region in Northern Italy. Models for estimating ground-motion shake maps, based on regional attenuation relationships, spatial correlation models and soil data are first presented. These maps, which are computed considering different ground-motion intensity measures, are then combined with data on the spatial distribution of buildings, and fragility models. In order to consider the different sources of uncertainty, i.e. ground-motion intensity, definition of the fragility models, etc., a Monte Carlo simulation approach is used for estimating the distribution of buildings with different damage levels in each municipality. Finally, the paper presents comparisons with damage data observed after the 2012 Emilia earthquake.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"111 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79620175","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 : 2021-01-01DOI: 10.7712/120121.8550.18862
M. Domaneschi, M. Tanganelli, S. Viti, G. Cimellaro
{"title":"VULNERABILITY OF ART WORKS TO BLAST HAZARD: THE FOUNTAIN OF NEPTUNE IN FLORENCE","authors":"M. Domaneschi, M. Tanganelli, S. Viti, G. Cimellaro","doi":"10.7712/120121.8550.18862","DOIUrl":"https://doi.org/10.7712/120121.8550.18862","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"11 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79652393","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 : 2021-01-01DOI: 10.7712/120121.8521.19300
Armando Benenato, S. Imperatore, G. Lignola, B. Ferracuti
{"title":"PROBABILISTIC SEISMIC FRAGILITY FOR ROCKING MASONRY FAÇADES USING CLOUD ANALYSIS","authors":"Armando Benenato, S. Imperatore, G. Lignola, B. Ferracuti","doi":"10.7712/120121.8521.19300","DOIUrl":"https://doi.org/10.7712/120121.8521.19300","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"46 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83375377","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 : 2021-01-01DOI: 10.7712/120121.8749.18602
Zelda Spijkerman, N. Bakas, G. Markou, M. Papadrakakis
This paper focusses on the ongoing discussion of developing a single relationship that can accurately predict the shear capacity of slender, reinforced concrete (RC) beams without stirrups. To date, the main approach used to predict the shear capacity of RC beams, has been based on the derivation of a formula from experimental data. In this study, the approach uses the development of RC FEM models without stirrups, where the beam width is larger or equal to the section height and tested under three-point bending. The models were created and analysed by using Reconan FEA software, where the obtained results from the nonlinear analyses were used to construct a large database of 10,000 beams with varying material and geometric properties. Artificial Intelligence (AI) training was performed by using machine learning algorithms on the numerically generated database to develop predictive models and to develop an improved formula for predicting the shear capacity of RC beams without stirrups. The proposed predictive formula was validated against an available ACI database of RC beams that were assembled by using experimentally tested, physical beams without stirrups. The predictive formula was also compared with the design code formulae proposed by ACI 318-19 and Eurocode 2. According to the numerical findings of this research work, the proposed formula outperformed both design formulae demonstrating significant potential in replacing the current design approach.
{"title":"PREDICTING THE SHEAR CAPACITY OF REINFORCED CONCRETE SLENDER BEAMS WITHOUT STIRRUPS BY APPLYING ARTIFICIAL INTELLIGENCE ALGORITHMS","authors":"Zelda Spijkerman, N. Bakas, G. Markou, M. Papadrakakis","doi":"10.7712/120121.8749.18602","DOIUrl":"https://doi.org/10.7712/120121.8749.18602","url":null,"abstract":"This paper focusses on the ongoing discussion of developing a single relationship that can accurately predict the shear capacity of slender, reinforced concrete (RC) beams without stirrups. To date, the main approach used to predict the shear capacity of RC beams, has been based on the derivation of a formula from experimental data. In this study, the approach uses the development of RC FEM models without stirrups, where the beam width is larger or equal to the section height and tested under three-point bending. The models were created and analysed by using Reconan FEA software, where the obtained results from the nonlinear analyses were used to construct a large database of 10,000 beams with varying material and geometric properties. Artificial Intelligence (AI) training was performed by using machine learning algorithms on the numerically generated database to develop predictive models and to develop an improved formula for predicting the shear capacity of RC beams without stirrups. The proposed predictive formula was validated against an available ACI database of RC beams that were assembled by using experimentally tested, physical beams without stirrups. The predictive formula was also compared with the design code formulae proposed by ACI 318-19 and Eurocode 2. According to the numerical findings of this research work, the proposed formula outperformed both design formulae demonstrating significant potential in replacing the current design approach.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"18 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88778508","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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