Analysis And Calculation Of Post-construction Settlement Of Pier Foundation Of High Speed Railway Bridge

As an important symbol of the modernization of railways, high-speed railways represent today's cutting-edge technology of the railways in the world. China Railway Construction has entered the era of high-speed railway, which is closely related to the rapid development of the economy. Meanwhile, the construction requirements in the standards also put forward higher requirements for the design and construction of the railway. In order to guarantee high safety, high density, high-speed and high comfortableness of the operation of high-speed railways, it is necessary to keep the whole rail lines in an overall stable, smooth state. The above standard proposes more requirements on construction, wherein, the below-the-line structure settlement and deformation is a key link in many technologies.This paper analyzes the settlement laws of bridges and piers through scientific research and calculation for bridge abutments combined with the Yongding River Bridge project of the high-speed Beijing-Shijiazhuang Railway. It ultimately obtaines a valid conclusion through an analysis of a three-dimensional model with the help of the associated software(Ansys), which has a strong reference for the relevant project later.In this paper, the main areas of work are as follows:(1) Summarize and analyze various data of bridge abutments to obtain the law between settlement and time. At the same time, use different methods to calculate the settlement between the bridge piers, and obtain a more suitable model through analysis and comparison to facilitate later use.(2) Use finite element software Ansys when analyzing the bridge piers, solve many problems in the modeling, exposure analysis, access parameters, and actual calculation through simulation and data analysis. Then obtain the settlement situation and development trend of the bridge piers after construction.(3) Clarify the settlement rules and mechanisms of pile foundation through comparative analysis of actual measured settlements and their numerical simulation results, obtain the trend of bridge piers in the settlement process, and accurately obtain a variety of factors that influence the settlement.