堆载对基坑侧压力影响的引力算法与初步实践

Calculating Method and Initial Practice on the Influence of the Stacked Heavy Load at Ground on Pit-Wall Soil Pressure of Foundation Pit Based on Gravitational Field

由于对岩土本构关系认知上的差异,人们提出了各种各样的堆载对基坑侧压力影响的计算方法,这些方法对推动岩土力学的发展起到了许多积极作用。客观上讲,现有的这些堆载对基坑侧压力影响的计算方法没有一个能够非常真实、非常准确地反映基坑坑壁土压力的变化。以地心引力为依据,结合大量的基坑坑壁土压力实测数据,提出了一种基于引力场的堆载对基坑侧压力影响的计算方法。给出了相应的计算公式和应用实例。

Due to the difference of cognizing relations of rock structure,all kinds of methods to calculate the influence of the stacked heavy load at ground on pit-wall soil pressure of foundation pit were put forward, which impelled the rock mechanics development. None of these calculation methods exiting now can reflect the change of the pit-wall soil pressure exactly. According as centrifugal force, combined with plentiful truly measured data of the pit-wall soil pressure, a calculation method of the influence of the stacked heavy load at ground on pit-wall soil pressure of foundation pit on gravitational field was put forward. Corresponding calculation formula and application examples were offered.