考虑SSI效应的设圈梁构造柱农村民居振动台试验研究  

Shaking table test of rural buildings with ring beams and structuralcolumns considering soil-structure interaction effect

作　　者：尹志勇 孙海峰 景立平[2] 董瑞 徐琨鹏 YIN Zhiyong;SUN Haifeng;JING Liping;DONG Rui;XU Kunpeng(School of Civil and Architecture Engineering,Hunan University of Arts and Science,Changde 415000,Hunan,China;Institute of Engineering Mechanics,CEA,Harbin 150080,Heilongjiang,China;Zhuhai Engineering Investigation Institute of Guangdong Province,Zhuhai 519000,Guangdong,China)

机构地区：[1]湖南文理学院土木建筑工程学院,湖南常德415000 [2]中国地震局工程力学研究所,黑龙江哈尔滨150080 [3]广东省珠海工程勘察院,广东珠海519000

出　　处：《地震工程学报》2023年第4期826-834,共9页China Earthquake Engineering Journal

基　　金：湖南文理学院博士科研启动项目(21BSQD39);中国地震局地震科技星火计划攻关项目(XH16010);中国地震局工程力学研究所基本科研业务费专项资助项目(2017B10);湖南文理学院大学生创新性试验计划项目(YB2120);湖南文理学院大学生创新性训练计划项目(XDC202266)。

摘　　要：设圈梁构造柱是提高农村民居整体抗震性能的重要措施之一。文章以设圈梁构造柱的砌体结构形式农村民居为对象开展了考虑土-结构相互作用(SSI)的振动台试验,试验的结构模型采用1/4缩尺比例制作,并放置在地基土模型之上。地震波选取为1条天然地震波和2条人工地震波,输入的地震波幅值分别为0.1g(7度)、0.2g(8度)0.4g(9度)。试验结果表明:0.4g(9度)地震作用下,结构模型仅纵墙的门窗洞口四角出现细微裂缝,破坏状态为基本完好,说明设圈梁构造柱的农村民居抗震性能良好;随着地震作用增大,结构模型的加速度放大系数呈逐渐减小的趋势,层间位移反应呈缓慢增大的趋势;当地震作用较大的时候,应适当考虑SSI效应对土层到结构加速度传递系数具有一定程度降低的影响。The setting of ring beams and structural columns is an important measure to improve the overall seismic performance of rural buildings.In this study,a series of shaking table tests considering soil-structure interaction(SSI)was performed on rural buildings with ring beams and structural columns.The 1/4 scaled model of the structure used in the test was manufactured and placed on a foundation soil model.One natural and two artificial seismic waves were selected,and the input seismic amplitudes were 0.1 g(7-degree),0.2 g(8-degree),and 0.4 g(9-degree).The test results showed that under the action of a 0.4 g(9-degree)earthquake,only slight cracks were induced around the corners of doors and windows of the longitudinal wall,and the failure mode was intact,indicating good seismic performance of rural buildings with ring beams and structural columns.With the increase in the seismic action,the acceleration amplification coefficient of the structural model decreased gradually,while the response of the story drift gradually increased.When the seismic intensity is high,the influence of the SSI effect on the acceleration transfer coefficient from the soil layer to the structure should be appropriately considered.

关 键 词：砌体结构 圈梁 构造柱 SSI效应 振动台试验 

分 类 号：TU375.3[建筑科学—结构工程]