华南地震2024，Vol.44Issue(2)：118-127,10.DOI:10.13512/j.hndz.2024.02.14
基于慢速时变动力学的空间结构施工过程精细化分析方法研究
Study on Refined Analysis Method of Construction Process for Spatial Structures Based on Slow Time-Varying Dynamics
摘要
Abstract
Aiming at the construction process simulation of the spatial structures,a refined analysis method of the dynamic construction process based on slow time-varying dynamics was proposed according to the basic principle of time-varying mechanics.This new method realized dynamic coupling among the geometric,physical,and boundary factors of the time-varying structure by setting the analysis time consistent with the actual dynamic construction process and introducing the inertia force and damping force.Therefore,this method achieved the refined analysis of the whole construction process in practice.On this basis,the solution idea and implementation process of this method were given.The construction process of the complex long-span oblique corridor structure was analyzed,and the measured construction data was compared.The results show that the calculated values of this method are consistent with those of the traditional static construction process analysis method,which are generally closer to the engineering practice.Therefore,it can be used for the construction process analysis and safety assessment of spatial structures.Compared with the traditional static construction process analysis methods,this method can more accurately reflect the dynamic cumulative effect of the structural response in the actual construction process and obtain the stress and deformation of the structure at any time.Moreover,it can also be applied to the analysis of complex construction processes with strong nonlinearity,such as large deformation,large displacement,and mechanism displacement,etc.,avoiding the difficulty of convergence of nonlinear solution in traditional static construction process analysis methods.关键词
空间结构/慢速时变动力学/施工过程/精细化分析Key words
Spatial structure/Slow time-varying dynamics/Construction process/Refined analysis分类
土木建筑引用本文复制引用
石开荣,陈润洋,姜正荣..基于慢速时变动力学的空间结构施工过程精细化分析方法研究[J].华南地震,2024,44(2):118-127,10.基金项目
广东省现代土木工程技术重点实验室课题(2021B1212040003) （2021B1212040003）
