水力发电学报2014，Vol.33Issue(3)：231-238,8.
一种特高拱坝施工期特殊表面裂缝的成因分析
Reasons analysis of a particular surface crack in super-high arch dam during construction
摘要
Abstract
Surface cracks have some impacts on the working performance of super-high arch dams.This paper presents a preliminary reason analysis for a particular type of surface crack in the construction of 300m-level super-high arch dam.A nonlinear iterative method is used for solution of the opening-closing,sliding and expansion of joints and their stability is computed with the fracture mechanics method.The results show that abrupt opening of transverse joints at construction stage easily causes concrete damage in the surrounding region of waterstop and the water-pressure tests preceding transverse joints grouting will cause further crack expansion from local damage to surface crack.关键词
水工结构/表面裂缝/非线性迭代/特高拱坝/施工期/止水带Key words
hydraulic structure/ surface crack/ nonlinear iterative/ super-high arch dam/ construction stage/ waterstop分类
建筑与水利引用本文复制引用
冯帆,张国新,管俊峰,周绍武..一种特高拱坝施工期特殊表面裂缝的成因分析[J].水力发电学报,2014,33(3):231-238,8.基金项目
水利部公益性行业科研专项经费(201201050) （201201050）
国家自然科学基金青年基金(51209094) （51209094）
海岸和近海工程国家重点实验室基金(LP1211) （LP1211）
中国水科院科研专项项目(项目编号材集1247,材集1268) （项目编号材集1247,材集1268）
