A beam-type element for analyzing the eccentric load effect of box girder bridges

被引：14

作者：

Zhao, Chao ^{[1
,2
]}

Zhou, Yi ^{[1
,2
]}

Zhong, Xingu ^{[1
,2
]}

Wang, Gang ^{[3
]}

Yang, Qunyu ^{[1
,2
]}

Hu, Xiang ^{[1
,2
]}

机构：

[1] Hunan Univ Sci & Technol, Hunan Prov Key Lab Struct Wind Resistance & Vibra, Taoyuan Rd, Xiangtan, Peoples R China

[2] Hunan Univ Sci & Technol, Sch Civil Engn, Taoyuan Rd, Xiangtan, Peoples R China

[3] China Railway Guangzhou Grp Ltd, Yongzhou Publ Works Sect, Xiangya Rd, Yongzhou, Peoples R China

来源：

STRUCTURES | 2022年 / 36卷

关键词：

Box girder bridges; Eccentric load effect; Beam type element; Torsion; Distortion; DISTORTIONAL ANALYSIS; SHEAR; STRENGTH; JOINTS;

D O I：

10.1016/j.istruc.2021.11.001

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

Practical design of box girder bridges require the use of quick and simple calculation methods, rather than the complex numerical models based on shell or solid elements. In this paper, a beam-type element is proposed to analyze the eccentric load effect of box girder bridges, which is easily implemented in a computer program and efficient in computation. The element has two nodes, with four degrees of freedom (DOFs) per node, including two torsional DOFs and two distortional DOFs. To improve the accuracy of the beam-type element, the general solutions of the related governing differential equations are used to interpolate the torsional and distortional displacements within the element, and the coupling effect between torsion and distortion of the box girder bridge is ignored. The validity of the beam-type element is first verified by comparing numerical results with experimental data of a large scale model, and then it is applied to three real bridges to show why the proposed element is a good alternative to the traditional and time-consuming FE calculations.

引用

页码：1 / 12

页数：12

共 35 条

[1] Finite element thermo-mechanical analysis of concrete box-girders [J].