张拉式膜结构施工荷载的分析

Load Analysis of Tensioned Membrane Structures

对张拉式膜结构施工荷载采用非线性有限元法进行了分析。利用温度荷载,提出了施工成型分析方法。利用索杆系统确定了裁剪线的初始位置;利用施工成型中的反分析思想进行了膜片预应力的释放,并提出了确定无预应力膜片裁剪线的思想,为裁剪下料提供了可靠的依据。

Load analysis of tensioned membrane structures adopts nonlinear finite element method in this paper.Using temperature loads,it presents a method of form-construction and points that load analysis must be proceeded after form-construction analysis which proceeds after form-finding analysis.Cable-strut system is used to determine the initial position of cutting lines and the thinking of anti-pattern analysis in the form-construction is used to release prestress of membrane patches.It presents the thinking of conforming cutting lines for membrane patches without prestress,which provides a reliable basis for cutting pattern.