纤维橡胶隔震结构模拟地震振动台试验研究及仿真分析

Simulating earthquake shaking table tests of isolation structure with fiber-reinforced isolator and finite element analysis

研究开发了一种适用于广大村镇砌体房屋的低造价新型隔震装置——纤维橡胶隔震支座.设计制作了采用纤维橡胶隔震支座装置的村镇砌体房屋模型(比例为1/2),与同比例的非隔震砌体房屋模型进行对比模拟地震振动台试验研究分析,并且采用SAP2000有限元软件对试验模型进行了模态分析和非线性时程分析,对比研究了隔震和非隔震两种结构体系在7度、8度、9度地震作用下的抗震能力.试验结果表明:采用纤维橡胶隔震支座装置的村镇砌体房屋模型在经历9度地震后,房屋完好无损,而非隔震砌体房屋模型在9度地震作用下,结构出现了贯通裂缝,损破严重.

This paper researched and developed a new type of low-cost isolation devices：fiber-reinforced isolator. A model （ratio of 1/2 ） of village masonry structure housing installed by fiber-reinforced isolator was designed and manufactured, simulating earthquake shaking table test and comparing analysis with the same non-isolated masonry building model was carried out. Finite element software SAP2000 was used for modal analysis and time-history analysis. The seismic capacity of the isolated and non-isolated structural system under earthquake intensity 7,8,9 was studied. Comparative test results show that the isolated structural system is not damaged under earthquake intensity 9, but the non-isolated masonry building model shows penetrating cracks.