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Study on Influence of New Railway to Neighboring Existing Bridge

Author: LiJingPeng
Tutor: ZhangZuo
School: Beijing Jiaotong University
Course: Bridge and Tunnel Engineering
Keywords: Train Existing bridge structure Acceleration The Du Hamei Credits Damping
CLC: U441
Type: Master's thesis
Year: 2011
Downloads: 37
Quote: 0
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Abstract


With the rapid economic development and the growing scale of the city , the number and density of new rail lines has been greatly improved , the new line through parallel to or close to the existing buildings on the line close to both structural performance and durability can not be ignored . This paper studies the new railway line beneath the road bridge , the train runs on the power of the adjacent existing bridge structure and static impact . Field measurement of vibration impulse transfer relationship between the railway line to Highway Bridge Pier , U-shaped groove of the ballast rubber damping cushion and subgrade two railway lines local oscillator damping measures the impact load , according to the train - the surrounding soil body - the vibration of the bridge structure pipeline , train through to the Du Hamei impact points highway bridge piers dynamic response of three directions , and the acceleration measured overloading Highway Bridge Pier in the car under acceleration contrast , qualitative evaluation crossing trucks the dynamic effects of existing bridges and train on the durability of roads and bridges , but also from the base bearing capacity, the pier top lateral displacement and the strength of pile .

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