摘要
为了研究地震作用下超限高层建筑深基坑支护承压结构的抗震性能,针对超限高层建筑深基坑支护承压结构进行抗震性试验分析,通过试验结果实现对深基坑支护承压结构的最佳设计。依据某高层深基坑建设项目,制作试验试件,并采用有限元数值模拟软件建立深基坑支护承压结构的计算模型,结合地震振动台模拟地震环境,通过输入地震波测算能够反映结构抗震效果的延性、刚度以及承载力指标,从而根据试验结果分析支护结构的抗震性能。试验结果表明,深基坑的深度越大,结构的延性越高,抗震性能越好;深基坑支护承压结构地下连续墙的标高越大,基坑支护的侧向刚度就越大,抗震效果越好;当结构坡比为0.8时,结构的抗震性能最佳。
In order to study the seismic performance of the deep foundation pit support and pressure bearing structure of high-rise buildings under earthquake,a seismic test analysis was conducted on such bearing structure to achieve the optimal design of the deep foundation pit support and pressure bearing structure based on the test results.Based on a high-rise deep foundation pit construction project,test specimens were made and finite element numerical simulation software was used to establish a calculation model for the deep foundation pit support pressure bearing structure.Combined with seismic shaking table in simulation of the seismic environment,ductility,stiffness,and bearing capacity indicators that could reflect the seismic effect of the structure were calculated through inputting seismic waves.Therefore,the seismic performance of the support structure was analyzed based on the test results.The experimental results indicated that the deeper the deep foundation pit,the higher the ductility of the structure and the better its seismic performance,the higher the elevation of the underground diaphragm wall of the deep foundation pit support pressure bearing structure,the greater the lateral stiffness of the foundation pit support,and the better the seismic effect.When the structural slope ratio was 0.8,the seismic performance of the structure was optimal.
作者
张延
ZHANG Yan(School of Construction Engineering,Chuzhou Polytechnic,239000,Chuzhou,Anhui,China)
出处
《河北水利电力学院学报》
2025年第4期46-50,59,共6页
Journal of Hebei University Of Water Resources And Electric Engineering
基金
安徽省2024年中青年教师培养行动项目(YQYB2024141)
滁州职业技术学院重点科研项目(ZKZ-2024-6)。
关键词
高层建筑
支护结构
试验分析
抗震性能
high-rise buildings
supporting and pressure bearing structures
test analysis
seismic performance
