Lateral static and dynamic characteristics of thin-walled box girder

GAN Ya-nan^1,2, ZHOU Guang-chun¹

1.School of Civil Engineering , Harbin Institute of Technology, Harbin 150090,China;2.School of Civil Engineering and Architecture, Henan Polytechnic University, Jiaozuo 454010,China



Abstract:

To analyze the static and dynamic behaviors of the thin-walled box girder in its lateral webs in consideration of shear lag effect and shear deformation, an approach based on the minimum potential principle is introduced in this paper. Both static and dynamic response equations as well as the corresponding natural boundary conditions of the box girder are deduced. Meanwhile, three generalized displacement functions: w(x), U(x) and θ(x) are employed and their differences in the calculus of variation are quantitatively investigated. The comparison of finite shell element results with analytical results of calculation examples validates the feasibility of the proposed approach.

Key words:  thin-walled box girder  shear lag effect  static and dynamic characteristics  energy-variation principle

DOI：10.11916/j.issn.1005-9113.2009.01.021

Clc Number:U448.213

Fund: