STUDY ON SEISMIC RESPONSE OF A NEW STAGGERED STORY ISOLATED STRUCTURE CONSIDERING SSI EFFECT

IF 4.3 3区工程技术 Q1 ENGINEERING, CIVIL

Journal of Civil Engineering and Management Pub Date : 2022-05-03 DOI:10.3846/jcem.2022.16825

Dewen Liu, Liping Li, Yafei Zhang, Lihao Chen, Feng Wan, Fan Yang

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引用次数: 7

Abstract

The new staggered story isolated structure is a new type of seismic isolated structure developed from base isolated structure and inter-story isolated structure. In order to explore the seismic response of the new staggered story isolated structure considering the soil-structure interaction (SSI), the model of a new staggered story isolated structure considering SSI effect is established to analyze the nonlinear dynamic time-history response under rare earthquakes, and the comparison between hard soil and soft soil was carried out. Results show that the stiffness of the new staggered story isolated structure reduced, the modal period extended and the seismic response reduced by considering the SSI effect, the softer the site soil, the more obvious those changes are. Meanwhile, the shear force and the damage of the core tube decreases, while the shear force and the damage of the frame increases, the shear force transfers from the core tube to the frame. Additionally, the energy absorption of the seismic isolated bearings at the frame reduced, the energy absorption of the seismic isolated bearings at the core tube increased, the softer the site soil, the more obvious the trend is.

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考虑ssi效应的新型交错层隔震结构地震反应研究

交错层隔震结构是在基础隔震结构和层间隔震结构基础上发展起来的一种新型隔震结构。为了探讨考虑土-结构相互作用(SSI)的新型交错层隔震结构的地震反应，建立了考虑SSI效应的新型交错层隔震结构模型，分析了罕见地震作用下交错层隔震结构的非线性动力时程反应，并进行了硬土与软土的对比。结果表明:考虑SSI效应后，新交错层隔震结构刚度减小，模态周期延长，地震响应减小，场地土越软，这种变化越明显;同时，剪力和核心筒损伤减小，而剪力和框架损伤增大，剪力由核心筒向框架传递。此外，框架处隔震支座的吸能减小，核心筒处隔震支座的吸能增加，场地土越软，趋势越明显。

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来源期刊

Journal of Civil Engineering and Management ENGINEERING, CIVIL-

CiteScore

6.70

自引率

4.70%

发文量

审稿时长

1.7 months

期刊介绍： The Journal of Civil Engineering and Management is a peer-reviewed journal that provides an international forum for the dissemination of the latest original research, achievements and developments. We publish for researchers, designers, users and manufacturers in the different fields of civil engineering and management. The journal publishes original articles that present new information and reviews. Our objective is to provide essential information and new ideas to help improve civil engineering competency, efficiency and productivity in world markets. The Journal of Civil Engineering and Management publishes articles in the following fields: building materials and structures, structural mechanics and physics, geotechnical engineering, road and bridge engineering, urban engineering and economy, constructions technology, economy and management, information technologies in construction, fire protection, thermoinsulation and renovation of buildings, labour safety in construction.