单层正交索网结构有限分析计算方法及实验研究

Experimental Study and the Finite Analysis Calculation Method Research on the Single Orthogonal Rope Net Structure

建立了幕墙正交索网结构的计算力学模型,研究单层索网在网点分配荷载及预张力作用下的平衡方程、位移协调和变形体位能驻值方程,构成多变元的非线性耦合方程组。采用有限分析法将非线性耦合方程组解耦,寻求局部解析解再转化为全局数值解。设计小尺度实际模型在多点荷载作用下的内力和变形的实验。最后给出相关算例。

The computational mechanics model of orthogonal rope net structure on the curtain wall is established.Under the action of distributive loads and tensile forces at the points of intersection,the balance equations,displacement equations,potential energy equations and the kinetic energy equations are derived.Then this system of non-linear equations with multivariable is decoupled using the theory of finite analysis method.The analytical solution is search locally and finally the numerical solution is obtained globally.Using small-scale physical model,the deformation and internal force of the model structure under multi-point loads are study.Finally,corresponding computational example is given.