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为研究地铁隧道施工不同穿越角度与上方建筑物的位置关系对建筑物沉降及其受力的影响,选取五种地铁隧道与上方建筑物不同穿越角度的工况,并利用MADIS-GTS建立隧道-建筑物三维有限元模型进行模拟。首先对比分析了不同工况对地铁隧道开挖引起建筑物沉降的影响,其次对比分析了不同工况下建筑物的受力情况。模拟结果表明:随着角度的增大,建筑物基础沉降逐渐减小;随着角度的增加,建筑物承受的最大剪力和弯矩逐渐增大。
In order to study the influence of the relationship between the tunnel construction and different buildings on the settlement and force of the building, five tunnels with different crossing angles from the above buildings were selected and MADIS-GTS was used to establish tunnel- Building three-dimensional finite element model for simulation. Firstly, the influence of different working conditions on the settlement of buildings caused by subway tunnel excavation is analyzed. Secondly, the stress of buildings under different working conditions is compared and analyzed. The simulation results show that as the angle increases, the settlement of the building foundation gradually decreases. With the increase of the angle, the maximum shear force and bending moment of the building are gradually increased.