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支护结构的位移主要是水平位移,它将导致支护后土体的变形,并将对周围建筑物和地下管线的安全产生影响;本文通过力学理论分析给出了支护水平位移导致的土体水平应变变化规律公式,并根据公式得到了土体变形的影响区域;针对某实例,通过比较发现:力学近似公式得到的土体水平应变变化规律和影响区域,与有限元模拟结果十分接近,说明近似公式是合理的。这为通过支护位移控制周围建筑物及地下管线的位移,提供了依据。
The displacement of the supporting structure is mainly horizontal displacement, which will lead to the deformation of the soil after supporting and will affect the safety of the surrounding buildings and underground pipelines; this paper gives the horizontal displacement caused by the support of the soil through mechanical analysis. The law of horizontal body strain changes is obtained, and the region affected by soil deformation is obtained according to the formula. According to a certain example, the change law and influence region of soil horizontal strain obtained by the mechanical approximation formula are found to be very close to the finite element simulation results. Explain that the approximate formula is reasonable. This provides the basis for controlling the displacement of the surrounding buildings and underground pipelines by supporting the displacement.