Informatics Publishing Limited

He Wei ¹, Lin Xinhao ², Zhang Qianqian ¹, Guo Shuyi ³

Affiliations
1 School of Civil Engineering and Communication, North China University of Water Resources and Electric Power, Zhengzhou, 450 045, CN
2 Xinlian College, Henan Normal University, Zhengzhou 452 750, Henan, CN
3 School of Mechanical Engineering, North China University of Water Resources and Electric Power, Zhengzhou 450 045, Henan, CN

Abstract

The mechanical properties of concrete bridge located in mining area are influenced by the mining area environment and thickness of pavement. The unreasonable design of pavement layer will easily lead to the concrete bridge deck cracking. Based on FEM (finite element method), Jiaozuo Bridge is taken as an example to study on mechanical influence of pavement on concrete bridge deck with different thicknesses. A three-dimensional finite element model is built to simulate the bridges with three kinds of thickness of concrete deck pavement respectively. The results show that the maximum longitudinal and lateral tensile stresses in girder increase with the thickness of deck pavement which will cause the girder cracking while the maximum lateral tensile stress in concrete deck pavement decreases. When the thickness of waterproofing layer of deck pavement is 11cm, the stresses in deck pavement are all the least ones among the three cases respectively. The possibility of being crack in deck pavement is the lowest. And the design scheme which the thickness of waterproof concrete pavement is 11cm will be the best.

Keywords

Concrete Bridge, Mining Area, Pavement Thickness, Finite Element Method.

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