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Finite segment method for calculating the shear lag in thin-walled curved box girders

## Finite segment method for calculating the shear lag in thin-walled curved box girders

Wu You-Ming, Yue Zhu-Feng, Lü Zhen-Zhou
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• #### Abstract

The homogeneous solutions to the governing difference equations derived from energy variational method were used as the displacement patterns of finite segment. A finite segment model considering the initial curvature, bending,torsion,shear lag and distortion was established. The stiffness matrix and load column matrix were obtained based on the directed stiffness method and the working energy principle. A finite segment method was presented to calculate the shear lag effects with multi-span continuous curved box girder generally used in engineering. A perspex glass model of a two-span continuous curved box girder was made.The test on the perspex model were performed to study the shear lag effects respectively under concentrated load and uniformly distributed load. The calculation results of finite segment method were in agreement with the experimental results and results of finite element method, which verifies the accuracy of the finite segment method.

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#### Cited By

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•  Citation:
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• Abstract views:  3144
• Cited By: 0
##### Publishing process
• Received Date:  14 April 2008
• Accepted Date:  10 June 2008
• Published Online:  05 March 2009

## Finite segment method for calculating the shear lag in thin-walled curved box girders

• 1. (1)佛山大学数学系,佛山 528000; (2)西北工业大学工程力学系,西安 710072

Abstract: The homogeneous solutions to the governing difference equations derived from energy variational method were used as the displacement patterns of finite segment. A finite segment model considering the initial curvature, bending,torsion,shear lag and distortion was established. The stiffness matrix and load column matrix were obtained based on the directed stiffness method and the working energy principle. A finite segment method was presented to calculate the shear lag effects with multi-span continuous curved box girder generally used in engineering. A perspex glass model of a two-span continuous curved box girder was made.The test on the perspex model were performed to study the shear lag effects respectively under concentrated load and uniformly distributed load. The calculation results of finite segment method were in agreement with the experimental results and results of finite element method, which verifies the accuracy of the finite segment method.

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