考虑土-结构相互作用倾斜状态文峰塔地震响应分析  

Seismic response analysis of leaning Wenfeng Pagoda considering soil-structure interaction

作　　者：安一劲 韩鹏举[1] 秦健栋 白向灵 何斌[1] 王效渊 AN Yijing;HAN Pengju;QIN Jiandong;BAI Xiangling;HE Bin;WANG Xiaoyuan(College of Civil Engineering,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学土木工程学院,山西太原030024

出　　处：《岩土工程学报》2023年第S02期201-207,共7页Chinese Journal of Geotechnical Engineering

基　　金：山西省文物局科技项目(RH2100001662)。

摘　　要：为研究在土-结构相互作用下倾斜状态古塔地震响应,利用ABAQUS有限元软件,采用等效线性化地基土及非线性化砖石材料,考虑土体与结构分离滑移的几何非线性,借助python语言添加黏弹性人工边界,建立了倾斜及未倾斜状态永祚寺文峰塔两种有限元模型,通过时程分析方法对比研究倾斜因素对古塔抗震性能影响。结果表明:多遇地震作用下,文峰塔历史最大倾斜量对其抗震性能影响较小,峰值位移、层间位移角及加速度放大系数较未倾斜状态增加较小;设防地震作用下,倾斜状态文峰塔残余位移大幅增加,下层层间位移角普遍放大,加速度放大系数有所提高,塔身在倾斜侧损伤面积及损伤程度急剧增大,同时基础损伤也不容忽视。分析结果可为同类倾斜状态高层密檐砖塔抗震保护提供借鉴作用。In order to study the seismic response of the leaning pagoda under soil-structure interaction,two kinds of finite element models for the leaning and un-leaning Wenfeng Pagoda of Yongzuo Temple are established by using the ABAQUS finite element software,adopting the equivalent linearization of foundation soils and non-linearization of masonry materials,considering the geometric non-linearities of the soil-structure separation and slip,and adding the visco-elastic artificial boundaries with the help of python language.By comparing the two models through the time-range analysis method,the effects of inclination factor on the seismic performance of the pagoda are investigated.The results show that under the action of small earthquakes,the historical maximum tilt has less impact on its seismic performance,and the peak displacement,section displacement angle and acceleration amplification coefficient have small increase.Under the action of middle earthquakes,the residual displacement of the leaning pagoda increases greatly,the lower layer of the pagoda section displacement angle is generally enlarged,the acceleration amplification coefficient increases,the damage area and degree of the pagoda in the leaning side increase dramatically,and the foundation damage should not be neglected.The analysis results can provide a reference for the seismic protection of similar leaning high-rise dense eaves brick pagodas.

关 键 词：土-结构相互作用 倾斜砖塔 地震响应 黏弹性边界 

分 类 号：TU311.3[建筑科学—结构工程]