Base-isolated steel structure with spring limitersunder near-fault earthquakes: Experiment

IF 1.4 4区工程技术 Q3 ENGINEERING, CIVIL

Earthquakes and Structures Pub Date : 2021-09-01 DOI:10.12989/EAS.2021.21.3.239

Miao Han, Yuandong Wang, Hongkai Du, Xiangyang Chu, Mingjian Cui, Lingshuai Meng

引用次数: 2

Abstract

The seismic performance of a steel frame base-isolated structure with steel spiral spring limiters is experimentally investigated under near-fault ground motions. A series of shake table simulator tests are carried out to analyze the dynamic response of isolation layer and superstructure. The test setup consists of a one-eighth scale five-story steel frame with steel spiral spring limiters that are designed and modeled in different parameters and stiffness, as well as various reserved gap sizes between the testing structure and limiters. The main output parameters are the maximum deformation at the isolation level, the maximum vertical force of isolation bearings, and inter-story drift. The results further reveal the seismic impact on the isolation layer and superstructure dynamic response caused by the limiter stiffness and reserved gap size.

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近断层地震下带弹簧限位器的基础隔震钢结构试验

试验研究了带螺旋弹簧限位器的钢框架基础隔震结构在近断层地震动作用下的抗震性能。进行了一系列振动台模拟试验，分析了隔震层和上部结构的动力响应。试验装置由1 / 8比例的五层钢框架和钢螺旋弹簧限位器组成，这些限位器以不同的参数和刚度设计和建模，并在测试结构与限位器之间保留不同的间隙尺寸。主要输出参数为隔震层处的最大变形、隔震支座的最大竖向力和层间位移。结果进一步揭示了限制刚度和预留间隙大小对隔震层和上部结构动力响应的地震影响。

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 ENGINEERING, CIVIL-ENGINEERING, GEOLOGICAL

CiteScore

2.90

自引率

20.00%

发文量

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