碾压混凝土坝横缝间距对温度应力的影响  

Effect of Thermal Stress on RCC Dam by Transverse Joints

作　　者：李守义[1] 陈尧隆[1] 王长江 何劲[1] 

机构地区：[1]西安理工大学水电学院

出　　处：《红水河》1996年第1期13-18,共6页Hongshui River

基　　金："八五"国家重点科技攻关项目

摘　　要：本文根据碾压混凝土坝薄层浇筑连续上升的施工特点，用三维有限元浮动网格法计算程序，按不同横缝间距的坝段，模拟施工过程对温度场和温度应力进行了仿真计算，揭示了相同施工条件下，横缝间距对坝体最大温降应力、施工期温度场和温度应力影响，对碾压混凝土坝横缝间距选择具有参考价值。in this paper, the temperature field and the stress field of roller compacted concrete dam are calculated with the 3--D FEM floating mesh method program. Such factors as procedure of construction, variationof transverse joints should be'considered and simulated' Under the same construction condition, the stress ofmakeup temperature drop, the temperature field and thermal stress in the construction period have been calculated for various transverse joints. The results is meaningful for reference in the selection of transverse joints.

关 键 词：碾压混凝土坝 横缝间距 温度应力 浮动网格法 

分 类 号：TV642.2[水利工程—水利水电工程]