复杂加载条件对高面板堆石坝力学行为的影响  

Influences of complex loading mode on mechanical behaviors of high concrete face rockfill dams

作　　者：岑威钧[1] 王帅[1] 杨宏昆 卢培灿[2] 周涛[2] 

机构地区：[1]河海大学水利水电学院,江苏南京210098 [2]四川省清源工程咨询有限公司,四川成都610072

出　　处：《水利水电科技进展》2011年第6期46-49,共4页Advances in Science and Technology of Water Resources

基　　金：国家自然科学基金(51009055);中央高校基本科研业务费专项(2009B07514)

摘　　要：针对高面板堆石坝因采用坝体分区填筑和面板分期浇筑互相交错的复杂施工方式使得高面板坝呈现出复杂的力学行为这一问题,借助某拟建高面板堆石坝,采用三维非线性有限元法对其进行复杂加载条件下的结构仿真分析。结果表明:复杂加载条件下坝体应力变形等力学行为均在合理范围之内,但坝体沉降极值较大坝全断面施工时有约12%的减小量;分二期浇筑的面板在竣工期下部一期面板凸向上游,容易引起脱空现象,需引起注意。The high concrete face roekfill dams （CFRDs） usually adopt complex construction mode, that is, filling of zoned dam body and placing of concrete face slabs in stages. Thus, the high CFRDs exhibit complex mechanical behaviors. Based on a high CFRD to be constructed, the 3D nonlinear finite element method was applied to the structural simulation under complex loading conditions. The results indicate that the stress and deformation behaviors of the dam under complex loading conditions are reasonable. Compared with the behaviors of full section filling of dam body, the maximum settlement of the dam has a decrease of about 12%. The first stage face will be, convex to the upstream at the completion stage under the placing of the concrete face slabs in twn stages, which will cause separation between the concrete slab and the cushion layer, and it should be noticed.

关 键 词：复杂加载 高面板堆石坝 力学行为 有限元分析 

分 类 号：TV641.4[水利工程—水利水电工程]