摘要
为了评估某水利工程冲砂闸坝体的稳定性,以三维有限元软件ANSYS为计算平台,采用超载系数法对该冲砂闸的坝基深层抗滑稳定进行三维分析和计算,得到坝基岩体的变形趋势和塑性区分布。结果表明,随着外部荷载的增加,闸坝位移也逐渐增大;当折减系数为5.8时,坝基塑性屈服区贯通Cr_4软弱破碎带,同时关键点位移发生突变,确定该闸坝的深层抗滑稳定最大安全系数在5.8~6.1之间,满足规范要求。研究成果可为类似闸坝工程的稳定计算和分析提供参考。
In order to evaluate the stability of sand dam of a water conservancy project,using three-dimensional finite difference software ANSYS as the computing platform,three-dimensional analysis and calculation of the deep foundation of the discharge of anti sliding stability of the overloading coefficient method,the deformation trend of dam foundation rock and plastic zone distribution,the results showed that with the increase of external load. The dam displacement increases; when the reduction coefficient is 5. 8,the plastic yield zone through Cr_4 katamorphic zone,while the key point displacement mutation,determine the maximum safety stability against deep sliding of the dam number between 5. 8 ~ 6. 1,can meet the requirements of specification. The research results have certain reference value for the stability check and analysis of similar dam engineering.
作者
杨杰
YANG Jie(Kashi Administration of the Tarim River Basin, Shache 844700, Xinjiang, China)
出处
《水利科技与经济》
2018年第6期37-40,共4页
Water Conservancy Science and Technology and Economy
