非一致地震波动输入下大型钢筋混凝土框架结构-地基体系地震响应规律  

Seismic response of a large reinforced concrete frame structure-foundation system under nonuniform earthquake wave input

作　　者：彭浩 高智能 胡世丽[1,2] 谷音[3,4] PENG Hao;GAO Zhineng;HU Shili;GU Yin(School of Civil and Surveying&Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;Jiangxi Provincial Key Laboratory of Environmental Geotechnical Engineering and Hazards Control,Jiangxi University of Science and Technology,Ganzhou 341000,Jiangxi,China;College of Civil Engineering,Fuzhou University,Fuzhou 350108,Fujian,China;Fujian Provincial Key Laboratory on Multi-Disasters Prevention and Mitigation in Civil Engineering,Fuzhou University,Fuzhou 350108,Fujian,China)

机构地区：[1]江西理工大学土木与测绘工程学院,江西赣州341000 [2]江西理工大学江西省环境岩土与工程灾害控制重点实验室,江西赣州341000 [3]福州大学土木工程学院,福建福州350108 [4]福州大学福建省土木工程多灾害防治重点实验室,福建福州350108

出　　处：《地震工程学报》2023年第4期887-893,共7页China Earthquake Engineering Journal

基　　金：国家自然科学基金资助项目(52068032);江西省教育厅科学技术研究资助项目(GJJ190498);江西省自然科学基金资助项目(20202BAB214025)。

摘　　要：为探索非一致地震波动输入对大型钢筋混凝土框架结构地震响应的影响,基于OpenSees软件平台建立二维钢筋混凝土框架结构-地基动力相互作用有限元模型。将El-Centro地震波按P波波形分别以0°、15°、30°和35°角入射该有限元模型进行计算,对比分析框架柱内力和楼层层间位移的地震响应。研究发现非一致地震波输入方法对于大型钢筋混凝土框架结构建筑动力响应影响明显,随着地震波入射角的增大,钢筋混凝土框架结构底层柱的轴力幅值减小,剪力幅值增大,而弯矩幅值变化较小,楼层层间位移幅值也随之增大。研究结果对于大型钢筋混凝土框架结构抗震设计具有参考意义。To explore the influence of nonuniform seismic wave input on the seismic response of reinforced concrete(RC)structures,a large 2D finite element model for the dynamic interaction between an RC frame structure and a foundation was built based on the OpenSees software platform.Numerical calculations of the RC frame structure were performed by inputting El-Centro seismic waves at incidence angles of 0°,15°,30°,and 35°.The internal forces of the frame columns and the story drifts of the structure were compared and analyzed.The results showed that the nonuniform seismic wave input method has an evident influence on the dynamic response of large-scale RC frame structures.With the increase in the incidence angle of the seismic wave,the axial force amplitude of the bottom column of the RC frame structure decreased while the shear force amplitude increased.The bending moment amplitude changed only slightly,and the amplitude of the story drifts increased.The research results have reference significance for the seismic design of large RC frame structures.

关 键 词：结构-地基相互作用 大型钢筋混凝土结构 非一致地震波动输入 内力幅值 层间位移 

分 类 号：TU375[建筑科学—结构工程] P315.3[天文地球—地震学]