摘要
埋藏式岔管国内外基本按明管设计,围岩分担内水压力仅作为一种安全储备。西龙池抽水蓄能电站岔管HD值远超过国内已建工程规模,在国内首次采用考虑围岩分担内水压力设计。本文重点介绍西龙池岔管考虑围岩分担内水压力设计成果。首先通过三维有限元结构分析,较系统研究岔管围岩分担内水压力的规律,并初步提出埋藏式岔管的设计原则;通过1∶2.5比尺的现场结构模型试验,最终确定埋藏式岔管设计参数和验证有限元计算成果。
Buried Y-pipes have been designed normally as exposed ones, in which internal water pressure shared by surrounding rock is taken as a safe reserve only. The design of surrounding rock to share internal water pressure is firstly adopted by Xilongchi project, whose HD value is far more than those of other existent projects in China. This paper describes mainly the design results. Law of internal water pressure shared by surrounding rock is investigated systematically by means of 3D finite element structural analysis to give the preliminary design principles for buried Y-pipes, and through the test of a I ：2.5 site structure model, the design parameters are determined finally and the computed results of FEM are demonstrated.
出处
《水力发电学报》
EI
CSCD
北大核心
2006年第6期61-66,共6页
Journal of Hydroelectric Engineering
关键词
水工结构
内加强月牙肋岔管
围岩分担内水压力设计
抽水蓄能电站
西龙池
hydraulic structure
crescent ribbed Y-pipe
Design of surrounding rock to share internal waterpressure
pumped-storage power station
Xilongchi
