地震作用下饱和土地基的弹塑性动力固结有限元分析  

Elastic-Plastic Dynamic Consolidation Finite Element Analysis of Saturated Ground During Earthquake

作　　者：靳聪聪 顾晓伟 JIN Congcong;GU Xiaowei(Faculty of Infrastructure Engineering, Dalian University of Technology, Dalian,Liaoning 116024, China;Hangzhou Mechanical Design Research Institute, Ministry of Water Resources , Hangzhou, Zhejiang 310024, China)

机构地区：[1]大连理工大学建设工程学部,辽宁大连116024 [2]水利部产品质量标准研究所,浙江杭州310024

出　　处：《水利与建筑工程学报》2018年第1期183-188,254,共7页Journal of Water Resources and Architectural Engineering

摘　　要：饱和土地基地震响应分析是岩土工程问题研究的热点,其中土体动力本构模型和动力固结是研究该问题的关键。采用基于广义塑性理论的PZC弹塑性本构模型和动力固结理论对饱和地基地震响应进行分析。利用编制的土体三轴试验模拟程序对典型近海岸填筑陆域中的土层静动力参数进行标定,之后结合国际上著名动力固结有限元三维程序DYNE3WAC对其进行地震响应研究。结果表明,DYNE3WAC三维弹塑性动力固结程序能合理分析饱和地基的地震响应,并对地基中典型土质点的超静孔压、加速度和沉降的发展规律进行分析,说明采用弹塑性动力固结分析方法的合理性。Seismic dynamic analysis of saturated ground is one of the important topics in geotechnical engineering re-search,in which the soil dynamic constitutive model and dynamic consolidation are the key of dynamic analysis.Based on the PZC elastic-plastic constitutive model and dynamic consolidation theory,the earthquake response of saturated ground can be analyzed.Therefore,the soil static and dynamic parameters of the typical coastal landfill can be calibrated by soil trixial experiment simulation program.DYNE3WAC which is the finite three dimensional of international famous dynamic consolidation can analyze the earthquake response.The results show that the three-dimensional program DYNE3WAC can reasonably analyze the earthquake response of the saturated foundation and the foundation^typical soil element of the pore pressure,acceleration and settlement,and the elastic-plastic dynamic consolidation analysis method can reasonable analyze the saturated foundation under earthquake.

关 键 词：PZC弹塑性本构 可视化SM2D 动力分析 

分 类 号：TU435[建筑科学—岩土工程]