Study On The Direct Loss Risk Prediction Of Building Caused By Foundation Dewatering

Pit precipitation is one of the important measures in the construction of deep foundation, once the decline of underground water level, it will cause a certain impact on the surrounding environment, such as ground subsidence, building tilt and municipal pipeline damage. In order to be able to assess the risk of precipitation construction in the foundation pit dewatering programming stage, you need to reduce the economic losses caused by the water level forecasts. Get the open type of precipitation project that not set sealing curtain for the study, making the corresponding software program. Predict the direct loss of buildings around foundation and the related parameters calculation. Calculation software developed can be convenient, fast to get the loss prediction value, and has the direct help about investment decision of the depth of excavation, underground structure type; give a reference to design of foundation pit dewatering scheme design staff; also for the construction to prevent foundation pit precipitation caused by accident, and provide a theoretical basis to reduce the loss.The main conclusions are as follows:1、 Summarizes the research status quo of building settlement caused by foundation pit adjacent, which select the calculation model by.2、Review the common development platform, through comparative study, choose Visual Basic as the development platform.3、Uniting the actual project of the software development can be simple, fast to get around the water level drawdown distribution induced by dewatering of foundation pit、 ground settlement、 settlement of the important parameters of gradient、 building loss percentage value and ultimately determine the loss of the surrounding buildings caused by precipitation prediction.4、 Select four foundation pit in Zhengzhou area, the value is calculated and analyzed by dewatering of foundation pit surrounding buildings direct loss prediction. The direct economic loss in different pit drawdown conditions of each building, verify the conclusion of past literature:the direct loss caused by drawdown increased present "multi-peak state overall rise".