水利水电技术2017，Vol.48Issue(9)：104-111,8.DOI:10.13928/j.cnki.wrahe.2017.09.016
基于预应力实测资料的闸墩结构安全评估研究
Measured prestress data-based study on safety assessment on gate pier structure
摘要
Abstract
In order to accurately evaluate the safety of the gate pier structure of the mid-level outlet during operation period,consideration of calculation precision and effciency,the local boundary conditions of the gate pier structure of the mid-level outlet under various working conditions are obtained herein with the sub-model method according to the calculation result of a whole arch dam model,and then a prestress regression model is established under the consideration of influences from time-effect,external temperature,fluctuation of the upstream water level,etc.On the basis mentioned above,an overall safety assessment on the gate pier structure of the mid-level outlet for a RCC arch dam in the Southwest China is made with the 3-D nonlinear finite element analysis method.The result shows that the stress distribution law of the gate pier structure is basically the same with its design state,the maximum normal stress at the neck is 1.27 MPa and occurs at the right side-wall of the left mid-level outlet,which is less than the allowable tensile stress of 1.54 MPa,thus meets the requirement of crack resistance for the gate pier.关键词
闸墩结构/预应力锚索/子模型方法/预应力回归模型Key words
gate pier structure/prestressed anchorage cable/sub-model method/prestress regression model分类
水利科学引用本文复制引用
李海枫,陈毅峰,徐秀鸣..基于预应力实测资料的闸墩结构安全评估研究[J].水利水电技术,2017,48(9):104-111,8.基金项目
国家科技重大专项(2016YFC0401809、2016YFB0201001) （2016YFC0401809、2016YFB0201001）
