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Mathematical Problems in Engineering
Volume 2015, Article ID 687535, 8 pages
http://dx.doi.org/10.1155/2015/687535
Research Article

Analysis of Water Flow Pressure on Bridge Piers considering the Impact Effect

1Ningbo Institute of Technology, Zhejiang University, Ningbo, Zhejiang 315100, China
2School of Civil Engineering and Architecture, Chongqing Jiaotong University, Chongqing 400074, China

Received 15 September 2014; Accepted 27 January 2015

Academic Editor: Chenfeng Li

Copyright © 2015 Yin-hui Wang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

In order to investigate the effects of water current impact and fluid-structure interaction on the bridge piers, the mechanism of water flow impact on the bridge pier is firstly studied. Then a finite element model of a bridge pier is established including the effects of water flow impact as well as the water circumferential motion around the pier. Comparative study is conducted between the results of water impact effect, fluid-structure coupling effect, theoretical analysis, and also the results derived using the formulas specified in the design codes home and abroad. The results show that the water flow force calculated using the formulas provided by the codes should be multiplied by an impact amplifier to account for the effect of flood impact on the bridge pier. When the flood flows around the pier, the fluid-structure coupling effect on the bridge pier can be neglected. The method specified in the China guidelines of General Code for Design of Highway Bridges and Culverts tends to provide a larger result of the water flow force.