项目名称: 大型地下岩体工程地震动力响应的不连续变形分析方法研究
项目编号: No.11272331
项目类型: 面上项目
立项/批准年度: 2013
项目学科: 数理科学和化学
项目作者: 张勇慧
作者单位: 中国科学院武汉岩土力学研究所
项目金额: 75万元
中文摘要: 本项目拟以二维不连续变形分析(DDA)方法为基础,结合工程地震学、工程地质学、岩石动力学及并行计算理论,研究工程区域地震波的输入和人工边界条件设置方法、不连续介质系统的新型动态阻尼模型、DDA的大规模高效并行算法,发展适用于大型地下岩体工程地震动态响应分析的DDA方法,编制相应的DDA高效并行计算程序,并与项目组已完成的大型地下洞室群三维地震物理模拟试验进行分析对比,进一步完善该方法。在此基础上,选取我国西部典型工程-白鹤滩水电站,进行地震荷载作用下地下洞室群动态响应分析,评价其地震动态稳定性及支护措施效果,从而为我国复杂地质条件下大型地下岩体工程的建设与安全运营提供技术支持,同时也为DDA方法进一步拓宽工程应用领域。
中文关键词: 地下岩体工程;地震动力响应;不连续变形分析(DDA);人工边界;并行算法
英文摘要: Based on the discontinuous deformation analysis method(DDA), combined with the engineering seismology, the engineering geology, the rock dynamics and the parallel algorithm theory, this project will study the seismic input method and artificial boundary setup method, the dynamic damp model of the discontinuous medium system and the effective mass parallel algorithim of DDA, develop the discontinuous deformation analysis method and the corresponding programe code for the seismic dynamic analysis of large underground rock mass engineering. The advanced DDA programe will be verified by the seismic physical modeling test of large undergroun caverns which has been finished by the group. Finally, the advanced DDA method will be applied in the seismic dynamic response analysis of large underground caverns of Baihetan hydrapower station in western China. All these works will provide the technical support for the construction and safety operation of large underground rock mass engineering in complicatied geologic conditions, and broaden the engineering application of DDA method.
英文关键词: underground rock mass engineering;seismic dynamic response;discontinuous deformation analysis;artificial boundary;parallel computing