采动区建筑物移动变形及附加应力数值模拟研究

通过对采动区建筑物移动变形及附加应力数值模拟研究,建立了建筑物移动变形与地表移动变形之间的系列关系式;总结出建筑物附加地基反力和附加水平应力的分布变化规律;无论建筑物位于地表下沉盆地什么位置,建筑物都是下部应力最大,要增大建筑物的抗变形能力,重点应对建筑物下部基础进行加固;地基越软,建筑物附加应力越小,适当软化地基可以减小建筑物的附加应力,从而达到保护采动区建筑物的目的。

Research on numerical simulations of displacement deformation and additional stress for buildings in mining active area

Base on the research for the displacement deformation and additional stress numerical simulations of the buildings in the mining active area,the paper set up the relationship formation between the displacement deformation of the buildings and the ground displacement deformation.The paper summarized the distribution change law of the additional foundation reversing force and the additional horizontal stress of the buildings.Wherever the building set at any location of the subsidence base of the ground,there is a max stress at the bottom of the building.To increase the anti deformation capacity of the building,it is important to reinforce the bottom foundation of the building.The softer of the foundation material,the additional stress of the building will be.A rational soften foundation could reduce the additional stress of the building in order to protect the purpose of the buildings in the mining active area.