土石坝水平位移监控指标快捷实时拟定研究  

Study on Quick and Real-time Formulation of Monitoring Indicator about Horizontal Displacement of Earth-rock Dam

作　　者：丁诗倩 谢谟文[1] 王立伟[1] 杜岩[1] 

机构地区：[1]北京科技大学土木与环境工程学院,北京100083

出　　处：《路基工程》2014年第4期44-50,共7页Subgrade Engineering

摘　　要：大坝安全至关重要。研究以弹性模量、泊松比、容重为主要参数,基于坝型及荷载组合的有限差分正交数值试验;利用ANSYS进行大坝变形分析,获得各工况下各类型大坝的坝顶水平位移;采用多元非线性拟合建立考虑多因素的坝顶极限水平位移模型,从而为大坝的变形监测提供了理论分析的监控指标。将结果应用于陆浑水库并与实测值进行了比较,提出了水库大坝的黄色预警值和红色预警值,为保大坝安全提供决策依据。Dam safety is of great importance. The research carried out the hmte chlierentlal ormogonal numerical test which takes elastic modulus, Poisson＇s ratio and volume weight as the main parameters, and depends on dam type and load combination. With ANSYS, dam deformation was analyzed, by which the horizontal displacement values of dam top of various dams under different working conditions were obtained; then by using multivariate nonlinear fitting, the model of ultimate horizontal displacement of dam top, which takes multiple factors into consideration, was established to offer the indicators for theoretical analysis for the purpose of dam＇s deformation monitoring. The result was applied to the Luhun Reservoir, and then compared with the measured values, thus the yellow and red warning values for the Reservoir dam were proposed, providing basis for decision-making to secure dam safety.

关 键 词：土石坝 正交数值试验 有限元分析 多元非线性拟合 监控指标 

分 类 号：TV698.11[水利工程—水利水电工程]