思德拱坝裂缝成因分析及处理措施研究

拱坝开裂长期困扰着工程界，特别是中国早期建造的砌石拱坝。为了找出坝体开裂的根本原因并合理地加固，采用传统的结构力学方法和三维有限单元法分析了思德水库大坝坝身不对称开裂的成因。研究认为：地形地质条件不对称、溢洪道和拱坝体形设计不合理是拱坝出现不对称开裂的重要原因。同时提出了相应的裂缝处理和坝区加固措施，即：对称上游岩体、修补裂缝并控制施工温度，以及在灌浆平台以上的上游坝面浇筑一层钢筋混凝土面板。

Crack Genetic Analysis and Countermeasure Research of Si''''de Dam

Dehiscence on arch dam is very common and worried by the engineers,so it is very important to find the essential cause of dehiscence and provide some useful countermeasures.The essential causes of asymmetric cracks in Si'de arch-dam,analyzed by using structural mechanics method and 3D finite element method,is the asymmetric topography and the inadequate design of spillway and dam.The rational measures to deal with the cracks and to strengthen the dam have been provided,namely making upstream rock symmetric,mending the cracks under adequate temperature and pouring reinforced concrete slab on the upstream dam till grouting flat.