龙滩水电站左岸拐弯坝段静力计算分析

The Static Calculation & Analysis of the Left Bank Turn Monolith of Longtan Hydropower Station

基于线弹性三维有限元法,对龙滩水电站左岸拐弯坝段设小机组进水口方案和取消小机组2种结构设计方案,分别采用了计入上游基岩承受库水及淤沙作用和不计入时2种计算方案,进行了静力计算分析,研究了该坝段的位移和应力分布规律.结果表明:拐弯坝段对侧向推力很敏感,增设小机组对该坝段结构影响不大.此结论可供同类工程设计、施工时参考.

The static structural analysis Of the left bank turn monolith of Longtan Hydropower Station which contain both the setting water intake scheme and without water intake scheme is researched, by the calculation schemes which the upstream bedrock is acted by the water,sand pressure and the upstream bedrock is not acted by the water,sand pressure respectively based on the linear elastic 3 -D finite element method, the displacement and the stress distribution of the turn monolith are also researched. It is concluded that the turn monolith is very sensitive to the side pressure, and setting the small units has little influence to the structure of the monolith. And some suggestions are given which could be referred in the design, the construction and the similar projects.