Pub Date : 2021-01-01DOI: 10.7712/120121.8626.20281
Anelise Dick, R. Carneiro-Barros, M. Braz-César
{"title":"FINITE ELEMENT MODEL CALIBRATION EFFECTS ON THE STATIC AND DYNAMIC RESPONSE OF A METALLIC HOLLOW TOWER","authors":"Anelise Dick, R. Carneiro-Barros, M. Braz-César","doi":"10.7712/120121.8626.20281","DOIUrl":"https://doi.org/10.7712/120121.8626.20281","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"39 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90892360","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: 10.7712/120121.8527.18913
Bogdan Šakić, Aleksa Milijaš, M. Marinković, C. Butenweg, Sven Klinkel
Reinforced concrete frames with masonry infill walls are popular form of construction all over the world as well in seismic regions. While severe earthquakes can cause high level of damage of both reinforced concrete and masonry infills, earthquakes of lower to medium intensity some-times can cause significant level of damage of masonry infill walls. Especially important is the level of damage of face loaded infill masonry walls (out-of-plane direction) as out-of-plane load cannot only bring high level of damage to the wall, it can also be life-threating for the people near the wall. The response in out-of-plane direction directly depends on the prior in-plane damage, as previous investigation shown that it decreases resistance capacity of the in-fills. Behaviour of infill masonry walls with and without prior in-plane load is investigated in the experimental campaign and the results are presented in this paper. These results are later compared with analytical approaches for the out-of-plane resistance from the literature. Con-clusions based on the experimental campaign on the influence of prior in-plane damage on the out-of-plane response of infill walls are compared with the conclusions from other authors who investigated the same problematic.
{"title":"INFLUENCE OF PRIOR IN-PLANE DAMAGE ON THE OUT-OF-PLANE RESPONSE OF NON-LOAD BEARING UNREINFORCED MASONRY WALLS UNDER SEISMIC LOAD","authors":"Bogdan Šakić, Aleksa Milijaš, M. Marinković, C. Butenweg, Sven Klinkel","doi":"10.7712/120121.8527.18913","DOIUrl":"https://doi.org/10.7712/120121.8527.18913","url":null,"abstract":"Reinforced concrete frames with masonry infill walls are popular form of construction all over the world as well in seismic regions. While severe earthquakes can cause high level of damage of both reinforced concrete and masonry infills, earthquakes of lower to medium intensity some-times can cause significant level of damage of masonry infill walls. Especially important is the level of damage of face loaded infill masonry walls (out-of-plane direction) as out-of-plane load cannot only bring high level of damage to the wall, it can also be life-threating for the people near the wall. The response in out-of-plane direction directly depends on the prior in-plane damage, as previous investigation shown that it decreases resistance capacity of the in-fills. Behaviour of infill masonry walls with and without prior in-plane load is investigated in the experimental campaign and the results are presented in this paper. These results are later compared with analytical approaches for the out-of-plane resistance from the literature. Con-clusions based on the experimental campaign on the influence of prior in-plane damage on the out-of-plane response of infill walls are compared with the conclusions from other authors who investigated the same problematic.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"45 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90110444","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: 10.7712/120121.8797.18482
L. Lara-Valencia, Mateo Ramírez-Acevedo, J. Brito, D. Caicedo, Yosef Farbiarz
Controlling wind-induced vibrations as well as aerodynamic forces is an essential part of the structural design of tall buildings in order to guarantee the serviceability limit state of the structure. This paper presents a numerical investigation focused on finding the optimal design parameters of a Tuned Inerter Damper (TID) based system for the control of wind-induced vibration in tall buildings. The control system is based on the conventional TID, with the main difference that its location is changed from the ground level to the last two story-levels of the structural system. The TID tuning procedure is based on an evolutionary cultural algorithm in which the optimum design variables defined as the frequency and damping ratios are searched according to the optimization criteria of minimizing the root mean square (RMS) response of displacements at the nth story of the structure. A Monte Carlo simulation is used to represent the dynamic action of the wind in the time domain in which a time-series derived from the Davenport spectrum using eleven harmonic functions with randomly chosen phase angles was reproduced. The above-mentioned methodology is then applied on a case-study derived from a 37-story prestressed concrete building with 144 m height, in which the wind action overcomes the seismic action. The results showed that the optimally TID is effective to reduce the RMS response of displacements up to 37.12% which demonstrates the feasibility of the system for the control of wind-induced vibrations in tall buildings.
{"title":"OPTIMAL DESIGN OF TID-BASED SYSTEM FOR THE CONTROL OF WIND-INDUCED VIBRATION IN TALL BUILDINGS THROUGH CULTURAL ALGORITHM","authors":"L. Lara-Valencia, Mateo Ramírez-Acevedo, J. Brito, D. Caicedo, Yosef Farbiarz","doi":"10.7712/120121.8797.18482","DOIUrl":"https://doi.org/10.7712/120121.8797.18482","url":null,"abstract":"Controlling wind-induced vibrations as well as aerodynamic forces is an essential part of the structural design of tall buildings in order to guarantee the serviceability limit state of the structure. This paper presents a numerical investigation focused on finding the optimal design parameters of a Tuned Inerter Damper (TID) based system for the control of wind-induced vibration in tall buildings. The control system is based on the conventional TID, with the main difference that its location is changed from the ground level to the last two story-levels of the structural system. The TID tuning procedure is based on an evolutionary cultural algorithm in which the optimum design variables defined as the frequency and damping ratios are searched according to the optimization criteria of minimizing the root mean square (RMS) response of displacements at the nth story of the structure. A Monte Carlo simulation is used to represent the dynamic action of the wind in the time domain in which a time-series derived from the Davenport spectrum using eleven harmonic functions with randomly chosen phase angles was reproduced. The above-mentioned methodology is then applied on a case-study derived from a 37-story prestressed concrete building with 144 m height, in which the wind action overcomes the seismic action. The results showed that the optimally TID is effective to reduce the RMS response of displacements up to 37.12% which demonstrates the feasibility of the system for the control of wind-induced vibrations in tall buildings.","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":"89575316","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: 10.7712/120121.8670.18669
T. Chrysanidis, V. Panoskaltsis
{"title":"ANALYTICAL INVESTIGATION OF THE TENSILE EXPERIMENTS TO PRISMS WITH VARYING LONGITUDINAL RATIO FOR STUDYING THE LATERAL BUCKLING OF R/C WALLS","authors":"T. Chrysanidis, V. Panoskaltsis","doi":"10.7712/120121.8670.18669","DOIUrl":"https://doi.org/10.7712/120121.8670.18669","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"32 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89607099","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: 10.7712/120121.8760.18982
Antonios A. Katsamakas, Gabriel Belser, Michalis F. Vassiliou, M. Blondet, B. Stojadinović
{"title":"EXPERIMENTAL INVESTIGATION OF SPHERICAL RUBBER SEISMIC ISOLATION BEARINGS","authors":"Antonios A. Katsamakas, Gabriel Belser, Michalis F. Vassiliou, M. Blondet, B. Stojadinović","doi":"10.7712/120121.8760.18982","DOIUrl":"https://doi.org/10.7712/120121.8760.18982","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"40 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89464274","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: 10.7712/120121.8655.18969
F. Cilento, D. Losanno, L. Piga
{"title":"LABORATORY CHARACTERIZATION OF A RECLAIMED RUBBER COMPOUND FOR LOW-COST ELASTOMERIC ISOLATORS","authors":"F. Cilento, D. Losanno, L. Piga","doi":"10.7712/120121.8655.18969","DOIUrl":"https://doi.org/10.7712/120121.8655.18969","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"52 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89883797","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: 10.7712/120121.8603.19120
A. Amendola, Narinder Sigh, C. Rodenburg, C. Holland, F. Fraternali
{"title":"A MESOSCALE TENSEGRITY MODEL OF SPIDER DRAGLINE SILK FIBER","authors":"A. Amendola, Narinder Sigh, C. Rodenburg, C. Holland, F. Fraternali","doi":"10.7712/120121.8603.19120","DOIUrl":"https://doi.org/10.7712/120121.8603.19120","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"06 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86549486","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: 10.7712/120121.8684.19498
Pelagia Kastiza, Lazaros Melidis, K. Katakalos
There is a valuable research work around the strength capacity of lap spliced rebars in columns specifically in accordance with bond-slip behavior or column’s seismic response. Nonetheless, lap splicing of rebars with anchored ends under combined bending and compressive loads has not yet been fully explored with due consideration of its components. It is imperative to investigate a column’s behavior under bending for different levels of axial load ratio and with different reinforcing configurations employing either plain or ribbed steel bars. This paper comparatively demonstrates the results of experimental and non-linear numerical simulations pertaining to the effect of splice strength and anchoring on the compression lap splicing of rebars in concrete column. The experimental specimens are composed by prototype-scale square columns with dense or sparse stirrups, measuring 250x250 mm and 2000 mm in length, while the steel reinforcement includes a lap splice length of 400mm. Some of the tested specimens were reinforced with plain spliced bars with anchored ends; while others included ribbed spliced bars with free ends. All the specimens were tested under simultaneous bending and constant concentric, axial loading of ν =0.1. Finally, the investigation results outline the influence of lap splice to the structural integrity of the column as a part of a composite system and generally evaluate the resistance of the lap splices in a plastic joint area, under parametric analysis.
{"title":"EXPERIMENTAL & NUMERICAL INVESTIGATION OF LAP-SPLICED R/C COLUMNS UNDER THREE POINT BENDING & AXIAL COMPRESSION","authors":"Pelagia Kastiza, Lazaros Melidis, K. Katakalos","doi":"10.7712/120121.8684.19498","DOIUrl":"https://doi.org/10.7712/120121.8684.19498","url":null,"abstract":"There is a valuable research work around the strength capacity of lap spliced rebars in columns specifically in accordance with bond-slip behavior or column’s seismic response. Nonetheless, lap splicing of rebars with anchored ends under combined bending and compressive loads has not yet been fully explored with due consideration of its components. It is imperative to investigate a column’s behavior under bending for different levels of axial load ratio and with different reinforcing configurations employing either plain or ribbed steel bars. This paper comparatively demonstrates the results of experimental and non-linear numerical simulations pertaining to the effect of splice strength and anchoring on the compression lap splicing of rebars in concrete column. The experimental specimens are composed by prototype-scale square columns with dense or sparse stirrups, measuring 250x250 mm and 2000 mm in length, while the steel reinforcement includes a lap splice length of 400mm. Some of the tested specimens were reinforced with plain spliced bars with anchored ends; while others included ribbed spliced bars with free ends. All the specimens were tested under simultaneous bending and constant concentric, axial loading of ν =0.1. Finally, the investigation results outline the influence of lap splice to the structural integrity of the column as a part of a composite system and generally evaluate the resistance of the lap splices in a plastic joint area, under parametric analysis.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"76 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83920471","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: 10.7712/120121.8763.19032
A. Dall'asta, G. Leoni, F. Micozzi, L. Gioiella, N. Ceccolini, L. Ragni
This paper deals with the new Research Centre designed for the University of Camerino and entirely financed by the national Civil Protection Department (DPC), following the seismic events in Central Italy in 2016. The building consists of a base-isolated steel braced super-structure and r.c. sub-structures able to adapt to the complex morphology of the area. In particular, the first part of the paper illustrates the design choices made to achieve a high level of resilience and robustness of the building, i.e. to limit damage to structural and non-structural components and equipment under moderate and design seismic actions and to avoid disproportionate consequences in the event of extreme actions, larger than the design ones. The second part of the paper is focused on static and dynamic tests performed during the construction phase of the building. At the end of the structural system construction (including sub-structures, the isolation system composed by elastomeric bearings and flat sliders and the steel super-structure), the building has been tested by means of static and dynamic (snap-back) in-field tests up to a displacement of the isolation system of 280mm and 220mm, respectively. Displace-ments have been imposed by means of a properly designed testing mechanism and different measure instruments have been placed in the building to register the structural response.
{"title":"THE NEW CAMERINO UNIVERSITY RESEARCH CENTER: DESIGN OF THE BASE-ISOLATED BUINDING AND DYNAMIC TESTING","authors":"A. Dall'asta, G. Leoni, F. Micozzi, L. Gioiella, N. Ceccolini, L. Ragni","doi":"10.7712/120121.8763.19032","DOIUrl":"https://doi.org/10.7712/120121.8763.19032","url":null,"abstract":"This paper deals with the new Research Centre designed for the University of Camerino and entirely financed by the national Civil Protection Department (DPC), following the seismic events in Central Italy in 2016. The building consists of a base-isolated steel braced super-structure and r.c. sub-structures able to adapt to the complex morphology of the area. In particular, the first part of the paper illustrates the design choices made to achieve a high level of resilience and robustness of the building, i.e. to limit damage to structural and non-structural components and equipment under moderate and design seismic actions and to avoid disproportionate consequences in the event of extreme actions, larger than the design ones. The second part of the paper is focused on static and dynamic tests performed during the construction phase of the building. At the end of the structural system construction (including sub-structures, the isolation system composed by elastomeric bearings and flat sliders and the steel super-structure), the building has been tested by means of static and dynamic (snap-back) in-field tests up to a displacement of the isolation system of 280mm and 220mm, respectively. Displace-ments have been imposed by means of a properly designed testing mechanism and different measure instruments have been placed in the building to register the structural response.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"145 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89078299","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: 10.7712/120121.8700.19014
E. Saler, V. Follador, Pietro Carpanese, F. da Porto
{"title":"FRAGILITY ASSESSMENT OF THE ITALIAN MASONRY SCHOOL BUILDING ASSET FOR RISK EVALUATION AT NATIONAL SCALE","authors":"E. Saler, V. Follador, Pietro Carpanese, F. da Porto","doi":"10.7712/120121.8700.19014","DOIUrl":"https://doi.org/10.7712/120121.8700.19014","url":null,"abstract":"","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":"95 1","pages":""},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89096696","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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