- 摘 要
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(湖南文理学院机械工程学院, 常德 415000)
[摘要]在考虑剪力影响的基础上,推导了工字型钢梁的弯曲正应力公式,讨论了工字型钢梁截面跨高比变化时剪力对其弯曲正应力的影响。研究结果表明:随着跨高比的增大,剪力对弯曲正应力的影响逐渐减小;且剪力对工字型钢梁腹板最大弯曲正应力的影响较大。
[关键词]剪力; 工字型钢梁; 弯曲正应力; 跨高比
中图分类号:TU391, O341文献标识码:A文章编号:1002-848X(2019)04-0107-03
Study on effect of shear force on bending normal stress of web plate of I-type steel beam
Wu Xiao, Liu Qiyuan
(College of Mechanical Engineering, Hunan University of Arts and Science, Changde 415000, China)
Abstract:On the basis of considering the effect of shear force, the formula of bending normal stress of I-type steel beam was deduced, and the effect of shear force on bending normal stress of I-type steel beam when the span-height ratio of cross-section changes was discussed. The results show that with the increase of span-height ratio, the effect of shear force on the bending normal stress decreases gradually, and the effect of shear force on the maximum bending normal stress of I-type steel beam web plates is greater.
Keywords:shear force; I-type steel beam; bending normal stress; span-height ratio
*湖南省科技计划项目(湘财企指[2011]65号),湖南省“十二五”重点建设学科资助项目(湘教发2011[76])。
作者简介:吴晓,学士,教授,Email:wx2005220@163.com。