无侧位移楔形变截面门式刚架柱弯矩作用平面内的等效弯矩系数研究  

Research on the equivalent bending moment coefficient to the non-sway column of tapered portal frame in plane

作　　者：董事尔[1] 张吉良[1] 邓夕胜[1] 张鹏[1] 孙鸿玲[1] 

机构地区：[1]西南石油大学建筑工程学院,四川成都610500

出　　处：《四川建筑科学研究》2011年第2期55-57,68,共4页Sichuan Building Science

基　　金：国家自然科学基金资助项目(50678154);四川省教育厅重点项目(09ZA141)

摘　　要：现行规范CECS 102∶2002《门式刚架轻型房屋钢结构技术规程》对楔形变截面刚架柱的稳定计算公式(6.1.3-1)借鉴等截面构件的稳定计算公式,但平面内等效弯矩系数仅对有侧移刚架柱作出规定βm=1,而对于无侧移楔形变截面刚架柱平面内等效弯矩系数未作任何规定,这给设计和工程实践带来了不便。本文基于平衡法,对3类典型受力情况下无侧移楔形变截面门式刚架柱平面内等效弯矩系数进行了深入研究,并取得一些有价值的研究成果,可为工程实践及规范修订提供参考。The stability calculation formula of the column of tapered frame draws lessons from that of constant section members in the latest criteria about technical specification for steel structure of light-weight buildings with gabled frame（CECS 102∶2002）.But in-plane equivalent bending moment coefficient only makes the regulation to the sway frame column,that is βm=1 and dose not make any stipulation to the in-plane equivalent bending moment coefficient of the non-sway column of tapered frame,which brings inconvenience for the design and engineering practice.The paper carries detailed study on in-plane equivalent bending moment coefficient of the non-sway column of tapered portal frame in the condition of three kinds of typical force bases on the balanced method and gets some valuable research results that may provide reference for engineering practice and code amendment.

关 键 词：楔形刚架柱 平面内 等效弯矩系数 无侧移 平衡法 

分 类 号：TU32[建筑科学—结构工程]