Load Test And Structural Force Performance Analysis Of Self-anchored Suspension Bridge

In order to ensure the long-term safety operation of the self-anchored suspension bridge,extending the safe service life of the bridge as far as possible.It is necessary for us to detect the self-anchored suspension bridge.So we can understand its security situation and residual bearing capacity.This paper analyzes the mechanical performance of the self-anchored suspension bridge performance based on the Xiao long wan bridge as the engineering background.This paper uses nonlinear finite element method to analyze the mechanical performance of self anchored suspension bridge.We evaluate load-bearing capacity of Xiao long wan bridge by load test.Firstly,through the appearance of the assessment method to detect all the important parts of the Xiao long wan bridge,the normal use of the bridge under the condition of the structure of the assessment,identification of the Xiao long wan bridge.Secondly,the main cable displacement,the displacement of the tower top,the stress of the top section,the internal force of the anchor cable and the stress distribution of the main beam are studied.Midas/Civil software is used to establish the three-dimensional space model,and the equivalent load test simulation is carried out.With the aid of research on equivalent truss model of different structural stiffness parameters of the self anchored suspension bridge and the force of the whole bridge vibration frequency.Research has shown that for the self-anchored suspension Bridges,girders and main cable stiffness on the anchor has a great impact the overall stiffness of suspension Bridges,increasing girder or main cable stiffness can obviously reduce the bending moment of girders by role.And main girder stiffness and main cable stiffness on the vibration frequency of anchor suspension bridge has a big impact,increasing girder stiffness or main cable stiffness will increase since the anchor suspension vibration frequency,so considering the reduction of isolation and driving comfort,girder stiffiiess and main cable stiffness can improve appropriately.This paper is mainly do research on the static load test and the vibration performance load test on the vibration characteristics of self-anchored suspension bridge.We have not do further research on driving dynamic response.This has certain limitations.However the static load test and vibration characteristic research can give an index to the safety and bearing capacity of anchor suspension bridge.The research of this paper can give some reference significance to person who do a similar test.