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Double track railway under the deck arch bridge steel box frame Stress Analysis and Experimental Study

Author: XuShuLei
Tutor: ZhangZuoZhi
School: Central South University
Course: Structural Engineering
Keywords: Under the deck frame tied arch bridge Finite Element Analysis Pier arch junction Steel - Mixed connection section Model test
CLC: U441
Type: Master's thesis
Year: 2010
Downloads: 68
Quote: 2
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Abstract


Chang nine intercity passenger line on the Main Bridge Yongxiu 32.5 128 32.5m for the next frame tied arch bridge deck . This structural system in our country is the first high-speed railway bridge applications . In this paper, full-bridge force characteristics were analyzed, and a pier on the real arch junction characteristics were local stress analysis, design produced a 1:3 scale model , completed the three most unfavorable load case model test, the structural characteristics of the bridge and force characteristics for a more systematic study . To complete the main work is as follows : 1. Using ANSYS and Midas respectively at constant load and full-bridge most unfavorable carried out under live load space finite element analysis. The results showed that: the bridge reasonable force , stiffness and strength requirements are met . 2 In the full-bridge finite element analysis , based on the real arch pier connections completed the three most unfavorable load conditions local fine spatial finite element analysis. The results showed that: the junction of concrete pier arch stress and stress steel members are to meet the requirements . 3 pairs of arch pier connections designed a 1:3 scale model to study the test method to determine the pilot program . Accordance with the test programs on the test model for spatial finite element analysis. The results showed that: a finite element analysis model test results with real connections pier arch finite element analysis results agree well , indicating that the model test feasible. 4 completed the three most unfavorable load conditions of the model test, and the test results and theoretical results are compared and analyzed . The results show that : Tests in good agreement with the theoretical value , arch pier smooth power transmission connections , structural strength to meet the requirements of a larger capacity margin . This research was YONGXIU Bridge design and construction to provide a basis for other similar structure is also a valuable reference.

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