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本文给出用以分析拱坝及其背管共同工作的计算模型.在背管与坝体之间布置夹层单元以模拟施工的薄弱面,并根据施工程序分级加载,对结构进行非线性分析.它可以分析背管对坝体应力分布的影响,还能给出背管与坝体之间接缝处和背管本身的应力状态.通过对李家峡工程的计算,分析了这种结构的工作情况,并得出一些有意义的结论.
This paper presents a computational model for analyzing the joint work of arch dam and its back pipe.The sandwich unit is arranged between the back pipe and the dam body to simulate the weak surface of the construction, and according to the construction procedure, the load is graded and the structure is analyzed nonlinearly. It can analyze the effect of back pipe on the stress distribution of the dam, and also give the stress state of the joint between the back pipe and the dam and the back pipe itself.Through the calculation of the Lijiaxia Project, the work of this structure is analyzed, And draw some meaningful conclusions.