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以安阳某基坑为例,通过对紧邻建筑存在时基坑开挖过程的模拟,分析了紧邻建筑对基坑支护结构的影响,探讨了开挖过程中板桩水平位移和弯矩的变化规律。分析结果表明:紧邻建筑物的存在使板桩水平位移和弯矩大大增加;紧邻建筑对支护桩水平位移曲线影响较大,但对弯矩分布曲线基本无影响;建筑物距离基坑较近时对基坑和支护结构的影响较大,当建筑物距离基坑大于基坑开挖深度时,建筑物对于基坑和支护结构的影响较小,可不考虑建筑物的影响。
Taking a foundation pit in Anyang as an example, the influence of the adjacent building to the supporting structure of the foundation pit is analyzed by simulating the excavation process of the foundation pit immediately adjacent to the building. The horizontal displacement and moment variation of the sheet piles during excavation are discussed law. The analysis results show that the horizontal displacement and bending moment of sheet piles greatly increase due to the presence of the adjacent building. The adjacent building has a great influence on the horizontal displacement curve of supporting piles, but has little influence on the bending moment distribution curve. When the distance from the foundation pit to the excavation depth of the foundation pit is larger, the influence of the building on the foundation pit and support structure is smaller, and the influence of the building can be ignored.