樓梯鋼支撐體系力學性能有限元分析

打開文本圖片集

【中圖分類號】：TU392 【文獻標志碼】：A 【文章編號】：008-397（2025）02-59-03

【DOI編碼】：0.3969/j.issn.008-397.2025.02.03

Finite Element Analysis of Mechanical Properties of Staircase Steel Supporting System

GUO Shichao1，WANGJin1，HUANGKeqi1，LINGHuyan2，LIU Xiaomin1，ZHANGQian1 （1.ChinaConstructionSixthEngineringDivisionCo.Ltd.，Tanjin3o71，China；2.ChinaStateSilkRoadConstructionInstet Group Co.Ltd.，Xi'an710075，China）

【Abstract】： Inorder to realizethegoalof low-carbonenvironmentalprotection and greenconstruction，thispaper proposes a kind of steel supporting system for staircases.Considering two different working conditions of normal use limit state and loadcapacity limit state，midas Gen finite element software was used to calculate the basic mechanical propertiesof the supporting system.The anti-fatigue performance of the structure and the influence of different initial defects on the fatigue lifeof the structure were analyzed byABAQUSandFRANC 3D.The results show that： 92.6% of the structural components have a stress ratio lower than O.2，and the structural safetymargin is sufficient.Themaximumstress amplitudeof the structure is42.1 MPa，there will be no fatigue damage under 2 million times ofcyclic loading.Thefatigue lifeof astructure decreases as the initial defects inthe weld increase，so the qualityof welds in hazardous areas should be inspected before construction.

【Key words】： staircase； steel supporting system；mechanical property；fatigue property

我國房建工程中普遍應用的模板腳手架支撐體系存在很多安全隱患，主要表現(xiàn)在材料、施工過程等方面l。（剩余3643字）