反拱型水垫塘底板结构的稳定性研究  

Study on Stability of Counter-arch Slab in Plunge Pool

作　　者：练继建[1] 杨敏[1] 安刚[1] 胡明罡[1] 

机构地区：[1]天津大学水利水电工程系,天津300072

出　　处：《水利水电技术》2001年第12期24-26,共3页Water Resources and Hydropower Engineering

基　　金：国家电力公司重点科技项目资助.

摘　　要：在研究反拱型水垫塘底板上整体水动力荷载特征的基础上,针对反拱底板的结构受力特点,提出了“随机拱”分析模型,对反拱型水垫塘底板结构局部和整体的稳定性进行了定量分析,从板块极限平衡角度给出了反拱型底板优于平底板的量化指标。On the basis of the investigation of the averaged uplift force and fluctuating uplift force on the counter-arch slab in the plunge pool,by analyzing the structure features of the counter-arch slab,a'random arch'analysis model was proposed to determine the safety coefficient for both local stability and integral stability quantitatively.Meanwhile,the physical model test is also conducted to verify the theoretical model.The test results and calculated results are shown in rather good agreement.From the point of view of critical balance,the safety coefficient of counter-arch slab is about 3times higher than that of flat slab.

关 键 词：反拱型水垫塘 底板 稳定性 随机拱 整体水动力 荷载特征 结构受力特点 定量分析 

分 类 号：TV314[水利工程—水工结构工程]