水利水电技术2017，Vol.48Issue(5)：50-55,119,7.DOI:10.13928/j.cnki.wrahe.2017.05.008
地震作用下坝后式水电站厂坝连接形式对比研究
A comparative study on powerhouse-dam joint mode for hydropower station after dam under seismic action
摘要
Abstract
In order to deal with the complicated dam site condition and the impact from strong earthquake on the stability of powerhouse during the construction of the hydropower station after dam in the Southwest China in recent years,a 3-D finite clement model for a hydropower station after dam at the mid-reach of Jinshajiang River is established with finite element method by taking the powerhouse-dam joint mode as the objectivc of the comparative selection for optimization.Under both the conditions of check flood level and earthquake,the impacts from three schemes for the powerhouse-dam joint modes,i.e.flat joint connection,wholly integrated connection and flat joint grouting,on the stress characteristics of the joint-through steel pipe and the powerhouse structure are compared.The result shows that under the conditions of the powerhouse-dam wholly integrated and the flat joint grouting schemes,the stresses and deformations of the joint-through steel pipe and both the upstream and the downstream walls of the powerhouse are obviously less than those from the scheme of flat joint connection,in which the maximum axial stress and circumferential stress of the steel pipe in the wholly integrated scheme are only 19％ and 17％ of those from the flat joint connection scheme,thus the displacement of the powerhouse under seismic condition is also within the allowance range,and then it is more favorable for both the powerhouse and the dam reaching the uniformly stressed status of the steel pipe through the joint effect from them,so it is recommended to be the adopted powerhouse-dam joint mode.关键词
厂坝连接形式/地震作用/坝后式电站/有限元法/过缝钢管Key words
powerhouse-dam joint mode/seismic action/hydropower station after dam/finite element method/joint-through steel pipe分类
建筑与水利引用本文复制引用
景月岭,王洋洋,梅润雨..地震作用下坝后式水电站厂坝连接形式对比研究[J].水利水电技术,2017,48(5):50-55,119,7.基金项目
国家自然科学基金(51409074) （51409074）
中国博士后科学基金(2014M550341) （2014M550341）
中央高校基本科研业务费专项资金资助(JZ2014HGQC0118,2013HGBH0052) （JZ2014HGQC0118,2013HGBH0052）
合肥工业大学博士学位专项资助基金(JZ2014HGBZ0022) （JZ2014HGBZ0022）
