The Direct Loss Risk Prediction Of Building Caused By Open Style Foundation Precipitation

Dewatering is one of the most important measures for the construction of deep foundation. Artificial reduction the groundwater will cause the around ground within a certain range sink, surrounding environment deformation,the adjacent buildings and public works damaged. In order to assess the risk of precipitation construction in foundation programming, it needs to predict the economic losses caused by lowering the water level.Get the open type of precipitation project that not set sealing curtain for the study.To the direct loss of buildings around foundation to prediction method and related parameters study.Summed up the common methods and conditions of use of foundation pit. Describe the research of adjacent buildings caused by precipitation. Describe the calculation of settlement precipitation and the house value.With the data of Zhengzhou Rail Transit Line Sports Centre Station to determine the calculation of "Artificial level" Describes the settlement mechanism caused by precipitation. By comparative analysis of measured settlement and theory settlement we can get the precipitation settlement correction factor of zhnegzhou.Within the influence of precipitation on the ground is divided into several concentric circles.The water level in the center and the settlement value of the ring as the representative of the entire ring. Proposed "land subsidence concept" that caused by the precipitation and proposed the model of land subsidence gradient.Collect the engineering case of basic tilt and loss of building. It is proposed the relationship curve between building losses and land subsidence gradient. Use Powell method established a functional relationship between direct loss of buildings caused by precipitation and land subsidence gradient. As an example of a project in Zhengzhou, calculate the direct losses of the building around the foundation. Identified the losses of value in different depths of precipitation Analysis the reasons of "multi-peak mode overall increase"...