建筑结构学报2025，Vol.46Issue(3)：24-37,14.DOI:10.14006/j.jzjgxb.2024.0311
基于自适应悬链线有限质点法的松弛索结构形态与受力分析
Analysis of form finding and mechanical performance of slack cable structures based on adaptive catenary finite particle method
摘要
Abstract
The tensile structure that incorporate slack cable elements present significant challenges for solution using the finite element method(FEM),due to the singularity of their overall structural stiffness matrix.This article constructed a particle model of the catenary cable element capable of accounting for slack effects,based on the principles of the finite particle method(FPM)and the fundamental theory of catenary cable elements.The basic control equation for the FPM catenary cable element was derived and an explicit time integration algorithm with adaptive variable parameter(adaptive catenary finite particle method,AC-FPM)was proposed,which significantly enhanced the convergence and computational efficiency of the form-finding process for slack cable elements in their slack state.The effectiveness of this method was validated through multiple case studies and an engineering application.Research indicates that compared to traditional FEM and FPM,the proposed method offers high computational precision,rapid iterative convergence,and minimal initial geometric configuration requirements for slack cable structures.It was applicable to both the forward and reverse analysis of the cable structure construction forming process and can accurately determine the form-finding and stress of tensile structural systems with slack cable elements.关键词
松弛索结构/悬链线/机构运动/自适应变参数/施工成形/荷载缓和体系Key words
slack cable structure/catenary/mechanism motion/adaptive variable parameter/construction forming/load reliving system分类
土木建筑引用本文复制引用
秦凯,赵帆,罗尧治,方斌,陈尚沅,赵建明..基于自适应悬链线有限质点法的松弛索结构形态与受力分析[J].建筑结构学报,2025,46(3):24-37,14.基金项目
北京市建筑设计研究院有限公司创新发展基金项目(2022-069). （2022-069）
