Dissertation
Dissertation > Transportation > Road transport > Bridges and Culverts > Structural principles, structural mechanics

Experimental and theoretical analysis of the reinforcement and restoration widens box girder

Author HuangHaiLei
Tutor FangShuJun
School Central South University
Course Civil Engineering
Keywords Fire Continuous beam bridge Space Finite Element Analysis Reinforcement and restoration Static load test
CLC U441
Type Master's thesis
Year 2011
Downloads 33
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Extend the the underground transfer space throat area 3x33m cast-in-place widens this article to a station continuous box girder bridge engineering background , the actual situation of the continuous beam bridge construction by fire , in order to ensure the safe use of the bridge structure , fire continuous box girder develop measures to reinforce detection , based on the test results , and reinforced prestressed concrete continuous beam bridge , full-bridge static load test to evaluate the deflection of the bridge structure reinforced , whether internal forces are within the permissible range , the carrying capacity of the bridge and work situation to make a comprehensive evaluation . Reinforcement of concrete structures after fire repair and reinforcement the bridge space before and after the analysis and comparison on the basis of existing achievements , research , and then comparing the static load test data , some conclusions for applications to provide reinforcement and restoration after the fire some suggestions and basis . Mainly to complete the following tasks : 1. Extend a station the underground transfer space throat Area situ continuous beam bridge engineering background , discussed the on-site inspection of the bridge after the construction of fire material test for detection of , and strengthening and repairing methods were research . For continuous box girder construction before the fire , and strengthening and repairing large finite element software MIDAS / FEA the physical modeling analysis of the full-bridge , comparative static performance between the two models , the results show that the two models are in good agreement . 3 . Analysis of old and new concrete shrinkage , creep the impact on box girders force performance , design and construction to provide a reference , especially the old and new concrete joint surface processing after similar bridge structural reinforcement . Box girder continuous reinforcement and restoration of fire static load test, load test data and the theory of finite element analysis and comparison results , make comprehensive evaluation of the bridge reinforcement quality and effect and the overall work situation .

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