地震工程与工程振动最新文献_第9页

INFLUENCE OF STRUCTURAL INELASTIC BEHAVIOR IN THE STUDY OF COLLIDING SDOF STRUCTURES 碰撞单自由度结构研究中结构非弹性行为的影响

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8623.19436

Pedro L. P. Folhento, R. Barros, M. Braz-César

引用次数: 1

IMPACT FACTORS DERIVED FROM INTERNAL FORCES IN TIMOSHENKO BEAMS SUBJECTED TO CONCENTRATED MOVING LOADS 集中移动荷载作用下铁木申科梁的内力影响系数

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8793.18999

Benjamín Pinazo, Salvador Monleón, C. Lázaro, P. Museros

引用次数: 0

PRELIMINARY CONSIDERATIONS ON THE LOSS OF SUPPORT FOR PRECAST BEAM ELEMENTS 预制梁构件支座损失的初步考虑

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8671.18853

Marius Eteme Minkada, S. Labò, A. Marini, A. Belleri

引用次数: 1

SIMULATING LOW FREQUENCY SOUND TRANSMISSION LOSS OF MOUNTED PANELS 模拟安装面板的低频声传输损失

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8861.18701

M. Kalderon, A. Paradeisiotis, I. Antoniadis

引用次数: 0

ON THE DEVELOPMENT OF A NOVEL APPROACH FOR SIMULATING ELASTIC BEAMS IN DUALSPHYSICS WITH THE USE OF THE PROJECT CHRONO LIBRARY 利用项目时标库开发了一种新的方法来模拟双物理中的弹性梁

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8794.19137

S. Capasso, B. Tagliafierro, I. Martínez-Estévez, J. Dominguez, J. El Rahi, V. Stratigaki, A. Crespo, R. Montuori, P. Troch, M. Gómez-Gesteira, G. Viccione

引用次数: 2

IMPROVEMENT OF DYNAMIC AND SEISMIC BEHAVIOUR OF CABINETS THROUGH CONTROLLED DEFORMATION 通过控制变形改善机柜的动力和抗震性能

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8645.18655

S. Pagliaro, A. D. Di Egidio, A. Contento

{"title":"IMPROVEMENT OF DYNAMIC AND SEISMIC BEHAVIOUR OF CABINETS THROUGH CONTROLLED DEFORMATION","authors":"S. Pagliaro, A. D. Di Egidio, A. Contento","doi":"10.7712/120121.8645.18655","DOIUrl":"https://doi.org/10.7712/120121.8645.18655","url":null,"abstract":". In this paper the possibility to improve the dynamic and seismic response of cabinets that can exhibit rocking dynamics is investigated. The generic cabinet is modelled as an assembly of rigid components and can undergo a change of conﬁguration. The scope of the research is to verify if the allowed deformation could protect the cabinet by preventing the overturning or reducing the amplitude of rocking oscillations. The control of the deformation is obtained by using linear visco-elastic devices, whose mechanical characteristics are at the base of the parametric analysis performed in the paper. An extensive parametric analysis is carried out by numerically integrating the equations of motion. The effectiveness of this protection method is analyzed by comparing the behaviour of rigid and deformable cabinets under one-sine pulse and seismic excitations. For the one-sine pulse excitation, the comparison is made with over-turning spectra that provide the amplitude of the excitation able to overturn the cabinets versus its circular frequency. For the seismic excitation, the comparison is performed by using different registered earthquakes and comparing the maximum rocking angle reached during the motion. The results show that the ability of cabinets to change their conﬁguration improves the dynamical and seismic performances compared to those of the equivalent rigid cabinets","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88744075","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}

引用次数: 0

THE INFLUENCE OF IMPACT MODELLING ASSUMPTIONS ON THE DYNAMIC BEHAVIOUR OF FLEXIBLE ROCKING OSCILLATORS 冲击建模假设对柔性摇摆振子动力学行为的影响

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8586.18880

Huojian Zhu, M. Chatzis, S. Acikgoz

引用次数: 1

SEISMIC BEHAVIOR OF SUBSTANDARD EXTENDED RECTANGULAR RC COLUMNS JACKETED WITH SPRAYED GFRM 喷浇钢筋板夹套不合格钢筋混凝土扩展矩形柱的抗震性能

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8466.18708

Muhsin Can Lüleci, Bilal Sarı, U. Demir, Muhammed Maraşlı, A. Ilki

{"title":"SEISMIC BEHAVIOR OF SUBSTANDARD EXTENDED RECTANGULAR RC COLUMNS JACKETED WITH SPRAYED GFRM","authors":"Muhsin Can Lüleci, Bilal Sarı, U. Demir, Muhammed Maraşlı, A. Ilki","doi":"10.7712/120121.8466.18708","DOIUrl":"https://doi.org/10.7712/120121.8466.18708","url":null,"abstract":"In earthquake prone areas, columns of many relatively old RC (reinforced concrete) structures do not comply with the current seismic design codes, particularly in developing countries. Low concrete strength, improper seismic detailing of transverse reinforcement and high axial stresses on the columns are common problems causing lack of sufficient ductility under seismic forces. External jacketing of substandard columns by spraying GFRM (glass fiber re-inforced mortar) is a new, practical and feasible method to overcome these deficiencies, particularly for the cases where access to the structural members is limited. In this study, the effects of cross-sectional aspect ratio (h/b) of columns on effectiveness of external jacketing with sprayed GFRM are investigated experimentally. For this purpose, four full scale RC columns were tested under constant axial load (0.35f ’ c A g ) and cyclic lateral displacement rever-sals before and after seismic retrofit with sprayed GFRM jacket. The cross-sectional aspect ratios of two columns were 2.0, whereas the cross-sectional aspect ratio was 4.0 for the other two columns. The structural responses of the columns are discussed through hysteretic and envelope load-displacement curves. The test results show that sprayed GFRM jacketing improves lateral ductility of the substandard columns significantly. It is also shown that the method is effective for the columns with high cross-sectional aspect ratios. Keywords","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90910942","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}

引用次数: 0

ADVANCED NUMERICAL PREDICTION OF UNREINFORCED U-SHAPED MASONRY WALLS LOADED OUT-OF-PLANE 无筋u形砌体墙面外荷载的先进数值预测

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8481.18935

J. Scacco, Luís C. Silva, G. Vasconcelos, G. Milani, P. Lourenço

引用次数: 0

MODELLING OF THE OUT-OF-PLANE BEHAVIOUR OF UNREINFORCED MASONRY PANELS USING THE DISCRETE MACRO-ELEMENT METHOD (DMEM) 用离散宏元法(dmem)模拟无配筋砌体面板的面外性能

地震工程与工程振动 Pub Date : 2021-01-01 DOI: 10.7712/120121.8522.19366

Valeria Cusmano, B. Pantò, I. Caliò, P. Lourenço

{"title":"MODELLING OF THE OUT-OF-PLANE BEHAVIOUR OF UNREINFORCED MASONRY PANELS USING THE DISCRETE MACRO-ELEMENT METHOD (DMEM)","authors":"Valeria Cusmano, B. Pantò, I. Caliò, P. Lourenço","doi":"10.7712/120121.8522.19366","DOIUrl":"https://doi.org/10.7712/120121.8522.19366","url":null,"abstract":"Existing unreinforced masonry (URM) buildings, including historical and monumental structures, represent an important architectural and cultural heritage for several countries worldwide. The response of URM, subjected to earthquake excitations, is strongly governed by the out-of-plane (OOP) response of masonry walls, which can lead to local failure mechanisms, even at low levels of seismic loading. The OOP failure conditions are mainly controlled by the geometry of the structure and the masonry quality. Different strategies are used for modelling the OOP response of URM structures including limit analysis and nonlinear FEM. A further recently proposed strategy is based on the discrete macro-element method (DMEM) which allows the simulation of the in-plane and the OOP response of masonry walls with a reduced computational cost compared to the other numerical strategies. In this paper, the DMEM is applied to simulate a masonry wall rocking experimental campaign for which other numerical strategies have already been applied. The dissipation effects, related to the rocking motion and the repetitive impacts, are taken into account according to an equivalent viscous damping approach. Furthermore, the role of masonry deformability is investigated by comparing the results obtained by the DMEM model, for different value of masonry elastic modulus, with those obtained by typical rigid-block based models. The results clearly demonstrate that the DMEM can be efficiently adopted to accurately predict the dynamic response of monumental structures.","PeriodicalId":66281,"journal":{"name":"地震工程与工程振动","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2021-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86114610","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}

引用次数: 0