您目前所在的位置:首页 - 期刊简介 - 详细页面

铁道科学与工程学报

JOURNAL OF RAILWAY SCIENCE AND ENGINEERING

第13卷    第2期    总第71期    2016年2月

[PDF全文下载]    [Flash在线阅读]

    

文章编号:1672-7029(2016)02-0283-06
波形钢腹板工字型钢梁的手风琴效应研究
林梦凯,冀伟,李海莲,赵海平,李春涛

(兰州交通大学土木工程学院,甘肃兰州 730070)

摘 要: 波形钢腹板工字型钢梁由于其手风琴效应,使腹板不承受轴向力。采用波形钢腹板代替普通工字型钢梁的平腹板,充分利用波形钢腹板可以提供较强的面外刚度而消除腹板加劲肋的布置,同时能够提高预应力的施加效率。以波形钢腹板工字型钢梁的手风琴效应为研究对象,提出截面的抗弯刚度折减系数来评价波形钢腹板工字型钢梁的手风琴效应并确定其影响因素。利用有限元软件建立模型梁计算截面抗弯刚度折减系数并分析其影响因素,经理论公式和室内模型试验验证了有限元模型的正确性。

 

关键字: 桥梁工程;手风琴效应;有限元分析;波形钢腹板;工字型钢梁;抗弯刚度折减系数

Study on accordion effect of corrugated steel webs i-shaped steel girde
LIN Mengkai,JI Wei,LI Hailian,ZHAO Haiping, LI Chuntao

School of Givil Engineering, Lanzhou Jiaotong University, Lanzhou 730070, China

Abstract:Because of the accordion effect, I-girder with corrugated steel webs does not bear axial force. Corrugated steel webs were used to replace ordinary flat webs of I-shaped steel girder. It can not only provide stronger outer surface stiffness and eliminate the layout of stiffeners, but also improve the applied efficiency of prestress. This paper took the accordion effect of I-girder with corrugated steel webs as the research object and proposed flexural rigidity reduction factor of section to evaluate the accodion effect and determine its influencing factors. The model of girder was established to calculate the flexural rigidity reduction factor of section and analyze the influencing factors by using the finite element software. The correctness of the finite element model was verified by theoretical formula and indoor model test.

 

Key words: bridge engineering; the accordion effect; the finite element analysis; corrugated steel webs; i-shaped steel girder; flexural rigidity reduction factor

ISSN 1672-7029
CN 43-1423/U

主管:中华人民共和国教育部 主办:中南大学 中国铁道学会 承办:中南大学
湘ICP备09001153号 版权所有:《铁道科学与工程学报》编辑部
------------------------------------------------------------------------------------------
地 址:湖南省长沙市韶山南路22号 邮编:410075
电 话:0731-82655133,82656174   传真:0731-82655133   电子邮箱:jrse@mail.csu.edu.cn