圆钢管混凝土柱在轴压下的局部屈曲  

Local Buckling of Concrete-Filled Circular Steel Tubular Column Subjected to Axial Compression

作　　者：魏丽婷[1] 赵永刚[1] 梁钦华[1] 李华[1] 

机构地区：[1]兰州理工大学理学院工程力学系,甘肃兰州730050

出　　处：《甘肃科学学报》2010年第3期126-129,共4页Journal of Gansu Sciences

摘　　要：假设核心混凝土刚性很大,通过压杆和圆柱壳2种模型,假定了位移函数的三角函数形式,用能量法求解圆钢管混凝土柱在轴压下局部屈曲的临界载荷和临界应力,2种方法得到的计算结果相同.结果表明,核心混凝土的存在大大提高了钢管管壁抵抗局部屈曲的能力.It is assumed that the rigidity of core concrete is great.Based on two kinds of models——the strut and the cylindrical shell respectively,when the displacement function is given in the form of trigonometric function,the local buckling critical load and stress of the concrete-filled circular steel tubular column subjected to axial compression are solved by using the energy approach.The two calculating methods have got the same result.It is shown by the result that the ability of steel plate to resist local buckling is improved remarkably due to the existence of core concrete.

关 键 词：钢管混凝土 局部屈曲 能量法 

分 类 号：TU375[建筑科学—结构工程] O343[理学—固体力学]