{"title":"土-结构相互作用对高层建筑地震响应的有利和不利影响","authors":"Xiaofeng Zhang, H. Far","doi":"10.1177/13694332241255747","DOIUrl":null,"url":null,"abstract":"In the traditional design method, structures are usually assumed as rigid base structures without considering soil-structure interaction (SSI). However, whether the effect of SSI on the seismic performance of structures is beneficial or detrimental is far from consensus among researchers. Moreover, previous literature mostly concentrated on the seismic behaviour of mid-rise buildings and moment-resisting frames. Therefore, it is in real need to comprehensively investigate the seismic response of tall buildings considering SSI. In this study, a soil-foundation-structure model developed in finite element software and verified by shaking table tests is used to critically explore the effects of SSI on high-rise buildings with a series of superstructure and substructure parameters. The beneficial and detrimental impacts of SSI are identified and discussed. Numerical simulation results indicate the rise in the stiffness of subsoil can dramatically amplify the base shear of structures. As the foundation rotation increases, inter-storey drifts are increased, and base shears are reduced. In general, SSI amplifies the inter-storey drifts showing detrimental effects of SSI. However, as for the base shear, SSI exerts detrimental effects on most piled foundation cases as well as classical compensated foundation structures resting on Ce soil, whereas, for compensated foundation structures resting on soil types De and Ee, effects of SSI are beneficial since the base shear is reduced. Moreover, regarding buildings with different structural systems and foundation types, minimum base shear ratios considering the SSI reduction effect are presented.","PeriodicalId":2,"journal":{"name":"ACS Applied Bio Materials","volume":"52 15","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Beneficial and detrimental impacts of soil-structure interaction on seismic response of high-rise buildings\",\"authors\":\"Xiaofeng Zhang, H. Far\",\"doi\":\"10.1177/13694332241255747\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"In the traditional design method, structures are usually assumed as rigid base structures without considering soil-structure interaction (SSI). However, whether the effect of SSI on the seismic performance of structures is beneficial or detrimental is far from consensus among researchers. 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引用次数: 0
摘要
在传统设计方法中,结构通常被假定为刚性基础结构,而不考虑土-结构相互作用(SSI)。然而,SSI 对结构抗震性能的影响是有利还是有害,研究人员尚未达成共识。此外,以往的文献大多集中于中层建筑和力矩抵抗框架的抗震性能。因此,亟需全面研究考虑 SSI 的高层建筑的地震响应。本研究采用有限元软件开发的土壤-地基-结构模型,并通过振动台试验验证,利用一系列上部结构和下部结构参数严格探讨 SSI 对高层建筑的影响。确定并讨论了 SSI 的有利和不利影响。数值模拟结果表明,底土刚度的增加会显著放大结构的基底剪力。随着地基旋转的增加,层间漂移增大,基底剪力减小。一般来说,SSI 会放大层间漂移,显示出 SSI 的不利影响。然而,就基底剪力而言,SSI 对大多数桩基以及位于 Ce 土层上的传统补偿地基结构产生不利影响,而对于位于 De 和 Ee 土层上的补偿地基结构,SSI 的影响是有利的,因为基底剪力减小了。此外,对于具有不同结构系统和地基类型的建筑物,考虑到 SSI 的减小效应,提出了最小基底剪力比。
Beneficial and detrimental impacts of soil-structure interaction on seismic response of high-rise buildings
In the traditional design method, structures are usually assumed as rigid base structures without considering soil-structure interaction (SSI). However, whether the effect of SSI on the seismic performance of structures is beneficial or detrimental is far from consensus among researchers. Moreover, previous literature mostly concentrated on the seismic behaviour of mid-rise buildings and moment-resisting frames. Therefore, it is in real need to comprehensively investigate the seismic response of tall buildings considering SSI. In this study, a soil-foundation-structure model developed in finite element software and verified by shaking table tests is used to critically explore the effects of SSI on high-rise buildings with a series of superstructure and substructure parameters. The beneficial and detrimental impacts of SSI are identified and discussed. Numerical simulation results indicate the rise in the stiffness of subsoil can dramatically amplify the base shear of structures. As the foundation rotation increases, inter-storey drifts are increased, and base shears are reduced. In general, SSI amplifies the inter-storey drifts showing detrimental effects of SSI. However, as for the base shear, SSI exerts detrimental effects on most piled foundation cases as well as classical compensated foundation structures resting on Ce soil, whereas, for compensated foundation structures resting on soil types De and Ee, effects of SSI are beneficial since the base shear is reduced. Moreover, regarding buildings with different structural systems and foundation types, minimum base shear ratios considering the SSI reduction effect are presented.
期刊介绍:
ACS Applied Bio Materials is an interdisciplinary journal publishing original research covering all aspects of biomaterials and biointerfaces including and beyond the traditional biosensing, biomedical and therapeutic applications.
The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrates knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important bio applications. The journal is specifically interested in work that addresses the relationship between structure and function and assesses the stability and degradation of materials under relevant environmental and biological conditions.