波形钢腹板组合箱梁扭转简化计算与设计  

Simplified Calculation and Design for Composite Box Girder with Corrugated Steel Webs Under Torsion

作　　者：张江峰[1] 沈孔健[2,3] ZHANG Jiangfeng;SHEN Kongjian(China Communications Construction Company Highway Consultants Co.,Ltd.,Beijing 100088,China;Southeast University,Nanjing,Jiangsu 210096,China;Jiangsu Provincial Transportation Engineering Construction Bureau,Nanjing,Jiangsu,210004,China)

机构地区：[1]中交公路规划设计院有限公司,北京100088 [2]东南大学,江苏南京210096 [3]江苏省交通工程建设局,江苏南京210004

出　　处：《公路工程》2020年第6期1-7,共7页Highway Engineering

基　　金：国家自然科学基金青年基金项目(52008095)。

摘　　要：为快速准确地预测波形钢腹板组合箱梁在外加扭矩作用下的扭矩扭率曲线,进行了抗扭设计,提出了结构在开裂、屈服及极限状态下扭矩及扭转刚度的简化计算方法,并结合既有试验结果对简化计算方法进行了验证;在此基础上,提出了波形钢腹板组合箱梁简要设计流程。结果表明,文中的简化计算方法可较准确地给出结构的扭转刚度、开裂扭矩、屈服扭矩和极限扭矩,提出的抗扭设计方法可用于波形钢腹板组合箱梁结构设计。In order to quickly and accurately predict the torque and twist curve of the composite box girder with corrugated steel webs under the action of applied torque and carry out the torsional design,a simplified calculation method for the torque and torsional stiffness of the structure under the cracking,yielding and limit states is established.The existing test results are used to verify the simplified calculation method.Basis on this,a brief design process of the composite box girder with corrugated steel webs is proposed.The results show that the simplified calculation method can accurately predict the torsional stiffness,cracking torque,yield torque and ultimate torque of the structure.The proposed torsion design method can be used in the design of composite box girder with corrugated steel webs.

关 键 词：波形钢腹板 组合箱梁 纯扭转 扭转刚度 扭矩扭率 设计方法 

分 类 号：U441[建筑科学—桥梁与隧道工程]