Analysis Of The Effect Of Hefei Xi Yuan Lu Excavation On Adjacent Underground Pipeline

With the rapid development of economy and society, Continuously push forward the the process of urbanization. Centralization of population and the increasingly worse traffic conditions.As is known to all, Metro is one of the best ways to alleviate those problems. Deep station foundations are usually located in the downtown area of a city.There is usually a lot of buildings surround the foundation ditch.In the construction process of the excavation will inevitably bring about a series of engineering problems. This requires us to do further research and analysis of the subway station excavation.Especially the influence of the adjacent underground pipelines. Therefore, we not only need to consider the stability of the traits but also need to pit themselves to study the case of the pipeline.This paper is based on the background of the station foundation pit of Xiyuan Road Station of Hefei Metro Line 2.On the basis of theoretical analysis,numerical simulation and the analysis of monitoring data,some traits general rules of pipeline are found. In this paper, the main research work carried out the following:(1)The first chapter describes the comprehensive background and significance of this research, and for research status deformation excavation and research of the impact of the pipeline literature research,summarizing current research studies have now found problems in the existing data for structure of the contents of this article and article planning;(2)According to the site of the actual test data, analyzes the variation of pipeline monitoring sites during construction, excavation found to influence of pipeline construction and pipeline based on weak points, Analysis of excavation for pipelines weak point corresponding position the impact of the pile and ground subsidence, find more useful information, and draw dynamic rule of construction for the pipeline and its surrounding influence;(3) on the basis of analysis of the actual monitoring data, and according to the general rules of the force pipeline traits, such as the use of elastic foundation beam theory, numerical methods for pipeline construction state shifts from a theoretical point of view; and the actual monitoring data fitting, get local line distance to the settlement as a function of the independent variable dependent variable for predicting the location of the pipeline to provide a basis other deformation;(4) According to the actual construction conditions, the establishment of a three-dimensional numerical model to analyze the influence of excavation for the construction of pipelines, from the side of the monitoring data demonstrate a general analysis of the law by using stratigraphic structure method and finite element method.