【摘要】 文中假定土壤对管道的横向反力遵从Winkler假定,沿纵向的摩阻力服从双线性规律。对带有弯头的管道引入“弹性抗弯铰”以考虑柔度增大的影响。建立了平面热力管网的力学模型与通用计算公式,并给出算例。更多还原

【Abstract】 A computational model of heat supply pipeline is presented in this paper. Winkler’s assumption is used to calculate the lateral soil force which acts on the pipe. Bilinear relationship of axial friction force and coresponding movement is assumed. Considering the flattening effect, the elbows are modelled with a special kind of hinge named "elastic flexure-’resisting hinge".Two examples are given and the deflection and internal force obt ained from this model are reasonable.更多还原