箱型截面圆弧曲梁的扭转强度验算方法  

Verification method for torsional strength of box-section arc beams

作　　者：邱如佳 张草宏 张磊[3] QIU Rujia;ZHANG Caohong;ZHANG Lei(Zhejiang Hongxiang Zhuneng Technology Co.,Ltd.,Hangzhou 310000,China;Hangzhou Xiao City Upgradation Co.,Ltd.,Hangzhou 310000,China;Institution of Advanced Engineering Structures,Zhejiang University,Hangzhou 310058,China)

机构地区：[1]浙江鸿翔筑能科技股份有限公司,杭州310000 [2]杭州西奥电梯现代化更新有限公司,杭州310000 [3]浙江大学高性能结构研究所,杭州310058

出　　处：《低温建筑技术》2024年第11期82-85,共4页Low Temperature Architecture Technology

摘　　要：弧形梁在实际工程中应用广泛,但由于受力复杂其抗扭强度验算较为困难。我国规范和设计手册未提供弧形梁的抗扭强度验算方法,现有研究的计算方法较为复杂,不利于实际工程应用。文中对常用的箱型截面圆弧梁的抗扭剪应力展开研究,同时针对两种典型边界条件下圆心角较小的圆弧梁的扭矩分布和最大扭矩进行研究,提出简单的计算方法。研究可以为实际工程提供依据和参考。Arc beams are widely used in practical engineering;however,their complex stress conditions make the verification of torsional strength challenging.Current standards and design manuals in China do not provide methods for calculating the torsional strength of arc beams,and existing calculation methods are often too complex for practical application.This paper explores the torsional shear stress of commonly used box-section arc beams and investigates the torque distribution and maximum torque for arc beams with small central angles under two typical boundary conditions.Simple calculation formulas are proposed.The findings of this study can serve as a basis and reference for practical engineering applications.

关 键 词：弧形梁 箱形截面 扭转应力 自由扭转 翘曲扭转 

分 类 号：TU391[建筑科学—结构工程]