大花水RCC双曲拱坝施工期仿真分析

Simulating Analysis of Construction of Dahuashui RCC Double-curvature Arch Dam

大花水RCC拱坝(H=134.5m)是世界上已建的最高的碾压混凝土双曲薄拱坝。大坝在碾压施工过程中,陆续发现了十几条裂缝,并有多条贯穿性裂缝。本文通过对全坝进行施工期全过程仿真分析,对施工过程中出现的裂缝现象进行深入细致的分析,得出施工过程中温度应力过高是导致大坝裂缝产生的重要原因。

Dahuashui RCC arch dam（H=133m） is the highest RCC double-curvature arch dam under construction in the world.During construction,more than 10 cracks have been found in the area of dam,among which 6 cracks are perforative.Simulating analysis of construction process of Dahuashui RCC arch dam is carried out in this article.According to analysis results,thermal stress happened in construction period has exceeded strength of concrete,which is the main cause of cracks.