摘要
近年来,钢-混组合结构在工程中广泛应用,薄壁钢板在组合结构承载过程中易发生局部屈曲。矩形钢管混凝土作为结构梁时,薄壁钢板易发生弯剪局部屈曲;薄壁钢-混凝土组合墙在抵抗水平作用时,钢板也易发生剪切屈曲。组合结构中充当支承的材料除了刚性混凝土,还有轻质弹性材料。论文采用Rayleigh-Ritz法,对弹性支承上简支约束长矩形薄板面内剪切受力条件下的屈曲行为进行分析研究,建立了满足上述边界条件的板的弹性屈曲计算公式。计算结果表明:该理论计算方法对于长矩形薄板(长宽比大于2)的屈曲具有广泛适用性。
In recent years,steel-mixed composite structure is widely used in engineering,and thin-walled steel plate is prone to local buckling in the bearing process of composite structure.When concrete-filled rectangular steel tube(CFST)is used as structural beam,thin-walled steel plate is prone to local flexural buckling.When thin-walled steel-concrete composite walls resist horizontal action,it is also easy for that steel plate to shear buckle when subjected to shear.In addition to rigid concrete,there are also equal lightweight elastomeric materials that act as supports in composite structures.In this paper,the buckling behavior of long rectangular thin plate subjected to internal shear force is analyzed and studied under the condition of simply supported circumferential constraints by Rayleigh-Ritz variational method,a formula for calculating elastic buckling of plates satisfying the above boundary conditions is established.The results show that the theoretical method is widely applicable to buckling of long rectangular thin plates with a length-width ratio greater than 2.
作者
李君谊
莫时旭
郑艳
LI Jun-yi;MO Shi-xu;ZHENG Yan(College of Civil Engineering and Architecture,Guilin University of Technology,Guilin 541004,China;Guangxi Key Laboratory of New Energy and Building Energy Saving,Guilin 541004,China)
出处
《工程建设与设计》
2021年第19期11-13,16,共4页
Construction & Design for Engineering
基金
国家自科基金项目(51108109、51168011)
广西建筑新能源与节能重点实验室开放研究基金资助项目(桂科能17-J-21-4)。
