Seismic poundings of multi-story buildings isolated byTFPB against moat walls

IF 1.4 4区 工程技术 Q3 ENGINEERING, CIVIL
Ayoub Shakouri, G. G. Amiri, Z. Miri, H. Lak
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引用次数: 1

Abstract

The gap provided between adjacent structures in the metropolitan cities is mostly narrow due to architectural and financial issues. Consequently, structural pounding occurs between adjacent structures during earthquakes. It causes damages, ranging from minor local to more severe ones, especially in the case of seismically isolated buildings, due to their higher displacements. However, due to the increased flexibility of isolated buildings, the problem could become more detrimental to such structures. The effect of the seismic pounding of moat walls on the response of buildings isolated by Triple Friction Pendulum Bearing (TFPB) is investigated in this paper. To this propose, two symmetric three-dimensional models, including single-story and five-story buildings, are modeled in Opensees. Nonlinear Time History Analyses (NTHA) are performed for seismic evaluation. Also, five different sizes with four different sets of friction coefficients are considered for base isolators to cover a whole range of base isolation systems with various geometry configurations and fundamental period. The results are investigated in terms of base shear, buildings' drift, and roof acceleration. Results indicated a profound effect of poundings against moat walls. In situations of potential pounding, in some cases, the influence of impact on seismic responses of multi-story buildings was more remarkable.
多层建筑与护城河墙的地震冲击
由于建筑和财政方面的原因,大城市中相邻建筑之间的差距大多很小。因此,在地震期间,相邻结构之间会发生结构冲击。它会造成从轻微的局部到更严重的损害,特别是在地震隔离的建筑物的情况下,由于它们的位移较大。然而,由于孤立建筑的灵活性增加,这个问题可能对这种结构更加有害。本文研究了护城河墙地震冲击对三摩擦摆支座隔震建筑物反应的影响。为此,在Opensees中建立了两个对称的三维模型,包括单层和五层建筑。采用非线性时程分析(NTHA)进行地震评价。此外,考虑了五种不同尺寸和四组不同摩擦系数的基础隔振器,以涵盖具有不同几何结构和基本周期的整个基础隔振系统。结果从基底剪力、建筑物漂移和屋顶加速度三个方面进行了分析。结果表明,对护城河墙壁的重击产生了深远的影响。在潜在冲击的情况下,某些情况下,冲击对多层建筑地震反应的影响更为显著。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Earthquakes and Structures
Earthquakes and Structures ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL
CiteScore
2.90
自引率
20.00%
发文量
0
审稿时长
>12 weeks
期刊介绍: The Earthquakes and Structures, An International Journal, focuses on the effects of earthquakes on civil engineering structures. The journal will serve as a powerful repository of technical information and will provide a highimpact publication platform for the global community of researchers in the traditional, as well as emerging, subdisciplines of the broader earthquake engineering field. Specifically, some of the major topics covered by the Journal include: .. characterization of strong ground motions, .. quantification of earthquake demand and structural capacity, .. design of earthquake resistant structures and foundations, .. experimental and computational methods, .. seismic regulations and building codes, .. seismic hazard assessment, .. seismic risk mitigation, .. site effects and soil-structure interaction, .. assessment, repair and strengthening of existing structures, including historic structures and monuments, and .. emerging technologies including passive control technologies, structural monitoring systems, and cyberinfrastructure tools for seismic data management, experimental applications, early warning and response
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