[1]朱文正,陈淮..梯形截面箱梁扭心位置计算[J].郑州大学学报(工学版),2001,22(02):77-79.[doi:10.3969/j.issn.1671-6833.2001.02.023]
　ZHU Wenzheng,Chen Huai.Calculation of torsional position of trapezoidal section box girder[J].Journal of Zhengzhou University (Engineering Science),2001,22(02):77-79.[doi:10.3969/j.issn.1671-6833.2001.02.023]

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梯形截面箱梁扭心位置计算()

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《郑州大学学报(工学版)》[ISSN:1671-6833/CN:41-1339/T]

卷:

22卷

期数:

2001年02期

页码:

77-79

栏目:

出版日期:

1900-01-01

文章信息/Info

Title:

Calculation of torsional position of trapezoidal section box girder

作者:

朱文正; 陈淮.

郑州工业大学土木建筑工程学院,, 郑州工业大学土木建筑工程学院,

Author(s):

ZHU Wenzheng; Chen Huai

关键词:

箱梁;  梯形截面;  扭心

Keywords:

box girder;  trapezoidal cross-section;  Twist the heart

DOI:

10.3969/j.issn.1671-6833.2001.02.023

文献标志码:

A

摘要:

箱形截面是大跨度桥梁优先采用的截面型式,截面扭转中心位置的计算是薄壁箱梁结构内力分析的重要组成部分.根据箱形薄壁梁约束扭转计算的乌曼斯第二理论,对桥梁工程中常用的梯形截面薄壁箱形梁的截面特性及扭转中心位置计算公式进行了理论推导,得出了具有显式表达式的梯形截面薄壁箱梁扭心位置计算公式.数值算例表明,该计算公式正确、使用方便,且可适用于矩形截面箱梁特例情况,计算公式具有适用性,可供工程实际应用.

Abstract:

Box section is the preferred section type for long-span bridges, and the calculation of the torsional center position of the section is an important part of the internal force analysis of thin-walled box girder structures. According to the Umans second theory of constrained torsion calculation of box-shaped thin-walled girder, the cross-sectional characteristics and torsional center position calculation formula of trapezoidal section thin-walled box girder commonly used in bridge engineering are theoretically derived, and the torsional position calculation formula of trapezoidal section thin-walled box girder with explicit expression is obtained. The numerical example shows that the calculation formula is correct, easy to use, and can be applied to the special case of rectangular section box girder, and the calculation formula has applicability and can be used for practical engineering applications.

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