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剪力對工字型鋼梁腹板彎曲正應力影響分析*
吳曉,劉奇元
摘 要

(湖南文理學院機械工程學院, 常德 415000)

[摘要]在考慮剪力影響的基礎上,推導了工字型鋼梁的彎曲正應力公式,討論了工字型鋼梁截面跨高比變化時剪力對其彎曲正應力的影響。研究結果表明:隨著跨高比的增大,剪力對彎曲正應力的影響逐漸減小;且剪力對工字型鋼梁腹板最大彎曲正應力的影響較大。

[關鍵詞]剪力; 工字型鋼梁; 彎曲正應力; 跨高比

中圖分類號:TU391, O341文獻標識碼:A文章編號: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

 

*湖南省科技計劃項目(湘財企指[2011]65號),湖南省“十二五”重點建設學科資助項目(湘教發2011[76])。

 

作者簡介:吳曉,學士,教授,Email:[email protected]

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