(1. School of Civil Engineering,Beijing Jiaotong University,Beijing 100044,China;2. RIOH Transport Consultants Co.,Ltd.,Beijing 100191,China;3. School of Civil Engineering and Architecture,Hebei University,Baoding,Hebei 071002,China)
Abstract:In order to study and predict nonlinear seismic response of high-rise buildings better under earthquake especially severe earthquake,the Jiannanchun hotel,located in Mianzhu city of Sichuan province,which endured Wenchuan Earthquake,is selected for research object. Superstructure-pile-soil mass three-dimensional finite element physical model is established by the popular finite element software ABAQUS. Different dynamic characteristics of superstructure caused by varied inter-pile soil and bearing layer soil are discussed via comparing the vibration characteristics and dynamic responses of superstructure upon rigid subgrades and pile-soil foundation. Conclusion is drawn for the influences of inter-pile soil and bearing layer soil on dynamic characteristics of superstructure thereby. Meanwhile,the influences of nonlinearities of superstructure,soil mass and pile-soil contact on nonlinear responses of the interaction system are considered. Comparison between time-history analysis results of dynamic elastoplasticity and disaster investigation performed after Wenchuan Earthquake indicates that the ability of anti-collapse of superstructure of high-rise buildings considering interaction effect meets the actual circumstances better than traditional design method. Results of finite element model matching site investigation well show that software ABAQUS is greatly applicable for severe nonlinear interaction problem analysis of high-rise buildings;and it can be guidance for engineering practice. Besides,the proposed method supplies important theoretical basis for engineering practice.
何益斌,夏栋舟,闫 岩,等. 基于场地土非线性性质的SSDI体系动力特性研究[J]. 岩土工程学报,2009,31(4):521-527.(HE Yibin,XIA Dongzhou,YAN Yan,et al. Dynamic behaviors of SSDI system based on nonlinearity of soil in site[J]. Chinese Journal of Geotechnical Engineering,2009,31(4):521-527.(in Chinese))
[12]
李 悦,宋 波,川岛一彦. 考虑土、上部结构和桥台相互作用的桥台抗震性能研究[J]. 岩石力学与工程学报,2009,28(6):1 162- 1 168.(LI Yue,SONG Bo,KAWASHIMA K. Research on abutment seismic performance considering interaction of soil,superstructure and abutment[J]. Chinese Journal of Rock Mechanics and Engineering,2009,28(6):1 162-1 168.(in Chinese))
Your browse does not support frame!