地基应力解除法纠偏模拟分析

Simulation of building rectification by stress relief method

对某实例应用有限元法对地基应力解除法纠偏建筑物的全过程进行了数值模拟,并对模拟过程中地基应力水平场和位移场的变化转移进行了分析。得出在掏土孔一侧,地基的竖向沉降量较大:而另外一侧的沉降量非常小:在地基范围以外的地表而甚至出现了反向隆起:在采用地基应力解除法进行建筑物纠偏施工时,纠偏孔应尽量靠近建筑物基础等结论。得出了地基应力和位移的变化规律,以加深岩土工作者对地基应力解除法纠偏技术认识的深度。

The stress relief method is applied to rectify deviation of a building example with the element method, and the whole process has been numerically simulated, finally the transferring and changes of foundation stress horizon and displacement field is analyzed in the simulating process. It is concluded that the one side foundation of excavating hole is large, and the other is small; Beyond foundation region, the reverse upheaval occurs on the surface Poles should approach to the foundation as soon as possible, when rectifying deviation of building with stress relief method, and so on. The change rule of stress and strain is figure out, which makes the investigators have a more profound comprehension about the method of relieving sub-ground stress in correcting building.