Study On Bridge Pier Deviation Correction And Reinforcement Technology In High Slope Conditions

With the rapid development of economy,the traffic volume is increasing day by day.Southwest China is a mountainous region with undulating terrain.In order to communicate with cities,Bridges need to be built across mountains.At this time,the bridge piers and pile foundations located in the mountain not only bear the load from the superstructure,but also bear the lateral earth pressure generated by the slope soil,so that the bridge piers and pile foundations located in the slope are in a complex stress environment.At present,there are relatively few studies on the combination of slope,pier and pile foundation,and there is no complete theoretical system as the research basis.Therefore,this thesis takes a widened bridge under the condition of high slope as the background project,and analyses the phenomenon of pier offset.This thesis will use ANSYS,MIDAS/CIVIL finite element software to simulate the background engineering,find out the causes of the bridge pier deviation,reinforce the pier and slope,and study the influence of the construction on the structure,so as to provide reference for the treatment of the similar engineering diseases.The main contents and results of this thesis are as follows:(1)In the slope of the bridge,the bridge pier may become complex and easy to produce disease structure.To solve this kind of disease,it is necessary to analyze the cause of the disease in combination with the slope environment of the bridge piers.(2)In order to find the cause of pier deviation,Use ANSYS and MIDAS/CIVIL finite element software to simulate the structure and verify the possibility of the two inferences.The calculation results show that the displacement of pier is driven by the sliding force of slope.At the same time,the load test verifies that the bearing capacity of pier can still meet the requirements of specifications under the condition of the displacement of pier,but the displacement of pier will continue under the action of automobile and crowd loads.(3)the combination of engineering practice and existing technology to choose the reinforcement scheme,and the use of ANSYS software simulation calculation,at the same time,the construction measures are calculated and analyzed,in order to achieve the purpose of solving the pier deviation,slope slide disease.(4)Set observation points,monitor observation points in one year and half,the monitoring results show that the pier offset value meets the requirements of the regulation,and the slope is stable.