【摘要】 以西部强震区糯扎渡高心墙堆石坝为例,采用拟静力抗震安全系数和Newmark刚塑体滑移量验算了动力稳定性,基于工程实际确定由若干变量控制的任意滑动面,采用Morgenstern-Price法计算安全系数,并结合和声优化算法搜索坝坡在地震荷载作用下的临界滑动面及相应安全系数,依据Newmark滑移法确定滑动体的地震滑移量。分析结果表明,该坝滑移量超过标准,建议坝顶部位应采取加固措施。更多还原

【Abstract】 Taking Nuozhadu high core wall rock-fill dam in western meizoseismal area for an example,pseudo-static limit equilibrium method and Newmark slide displacement are used to check dynamic stability.Firstly,the non-circular slip surface is determined by several engineering control variables and the safety factor is calculated by using Morgenstern-Price method.Then,the critical slip surface of dam and its safety factor under the action of earthquake load is obtained by harmony search algorithm.Finally,the seismic sliding displacement is investigated based on the Newmark sliding method.The results show that the sliding displacement of the dam exceeds the standard value,which should be taken measures for reinforcing the dam crest.更多还原