含缺陷坝体的强度和变形

The Deformation and Strength of Concrete Dams with Defects

水工大体积混凝土工程多数都存在的一些施工缺陷（如裂缝或内部灌浆缺陷），改变了正常的设计工作条件。针对这个问题，提出了模拟接缝灌浆缺陷的模型和约束条件超过未知量的解法。解法的计算具有累积应力功能。用此解法，探索某合缺陷高拱坝的运行工作状况，得到和实测相近的变形以及内部应力重分布状况，为工程设计提供补强依据。

There are always some engineering defects in most of the massive concrete of hydro-structures (such as the various cracks, joint with grouting defect, etc.), which work under abnormal and undesired condition (different from normal designed condition). In the present paper special Inechanical model of joints with grouting defects and the method for solving the problem, in which the number of constraints is more than the unknowns, are given and the program with stress-accumulating function was used for studying the working state of a high arch dam with defects. The calculated displacements of the dam are in good agreement with the results measured in situ. The interior stress-redistribution of the dam was also given, which provides the basic criterion for the design of strengthening the dam