动接触有限元并行计算在核电站边坡稳定性分析中的应用  

Application of Dynamic Contact Finite Element Method Parallel Computing Program on Nuclear-Power Station Slope Stability Analysis

作　　者：薛志成 王振清[1] 王立涛[3] 裴强[4] 

机构地区：[1]哈尔滨工程大学航天与建筑工程学院,黑龙江哈尔滨150001 [2]黑龙江科技学院建筑工程学院,黑龙江哈尔滨150027 [3]中国水利水电科学研究院,北京100048 [4]大连大学土木工程技术研究与开发中心,辽宁大连116622

出　　处：《沈阳建筑大学学报（自然科学版）》2012年第4期606-611,共6页Journal of Shenyang Jianzhu University：Natural Science

基　　金：国家自然科学基金项目(50908027);黑龙江省教育厅科学技术研究项目(1154138)

摘　　要：目的探索动接触并行有限元方法在核电站边坡稳定性分析中的适用性及应用效果.方法利用以MPI为并行环境开发的动态有限元程序,该程序包含了应用拉格朗日乘子法的点点接触条件,以黏弹性边界模拟无限地基的影响.针对边坡稳定性分析的应用,引入了强度折减法,以特征点位移突变作为失稳判据.结果确定了边坡的静力安全系数为1.36,得到了应用并行有限元程序确定安全系数花费的计算时间为16小时16分40秒,通用商业有限元程序ANSYS计算的时间是并行计算时间的10.03倍,证明了并行程序的高效性.结论动接触并行有限元程序使得强度折减法在大规模边坡稳定性分析中的应用成为现实,并行程序能够极大提高结构分析的速度.The objective for stability analysis of slope near-nuclear power station, the workload to determine the safety factor is very large. Analyzing some major projects with common chained finite element analysis software,the time it takes is too long to meet the project requirements. In order to improve the analysis speed, the author developed parallel finite element analysis program based on MPI and strength reduction method to resolve the contradiction. The static safety factor of a nuclear slope is 1.36, and the time the paral- lel finite element program to determine the safety factor is 16 hours 16 minutes and 40 seconds, while the general commercial finite element program ANSYS costs 10. 03 times the corresponding time in parallel pro- gram. The reliability and efficiency of Parallel calculation program in stability analysis of slide slope is con- firmed.

关 键 词：并行计算 有限元 边坡稳定 核电站 

分 类 号：TU452[建筑科学—岩土工程]