PDF全文阅读

任雪萍 ， 刘    琛 ， 张    成

（ 天津市水利工程有限公司 ，天津 300222)

摘   要 ：为提升脚手架搭建的稳定性，提升建筑施工的安全性，研究分析装配式脚手架结构整体稳定承载力。利用ANSYS 有限元软件建模并计算分析装配式脚手架在不同节点连接刚度 、高宽比 、初始缺陷 、集中荷载以及脚手架跨数等影响因素下的结构整体稳定承载力 。软件计算仿真实验结果显示：节点连接刚度与脚手架承载力呈正比例关系，25 kN ·m/rad 以后上升趋势较为缓慢；高宽比 、初始缺陷 、集中荷载较大情况下脚手架稳定承载力呈下降趋势；当集中应力出现在脚手架的脚手板上时，对于脚手架的稳定承载力最大； 当脚手架跨数 为 6 时，其稳定承载力效果最佳 。基于此，在搭建装配式脚手架时需要适当调整初始缺陷 、高宽比与跨数，选取合适节点连接刚度。

关键词 ：装配式 ；脚手架 ；结构整体 ；稳定承载力 ；ANSYS 有限元软件 ；集中荷载

中图分类号 ：TU974           

文献标志码 ：A           

文章编号 ：1005- 8249  (2023)   04- 0001- 07

 DOI : 10. 19860/j . cnki . issn1005- 8249. 2023 . 04. 001

REN Xueping ,  LIU Chen ,  ZHANG Cheng

( Tianjin Water Engineering Co. ，Ltd. ，Tianjin 300222 ,  China)

Abstract: In order to improve the stability of scaffold construction and enhance the safety of construction, this study analyzes the overall stability bearing capacity of assembled scaffold structure. ANSYS finite element software is used to model and calculate and analyze the overall stability bearing capacity of prefabricated scaffold under the influence factors of different joint stiffness, height-width ratio, initial defect, concentrated load and span number of scaffold. Software calculation results show that there is a positive proportional relationship between the joint stiffness and the scaffold bearing capacity, and the upward trend is relatively slow after 25kN*m/rad. The stable bearing capacity of scaffolding decreases when the height-width ratio, initial defect and concentrated load are larger. When the concentrated stress appears on the scaffold foot plate, the stability of the scaffold bearing capacity is the largest; When the span of scaffold is 6, its stability bearing capacity effect is the best. Based on this, it is necessary to properly adjust the initial defects, height-width ratio and span number, and select the appropriate joint stiffness when building the fabricated scaffold.

Keywords: assembly; the scaffold; structural whole; stability bearing capacity; ANSYS finite element software; concentrated load

作者简介： 任 雪 萍  ( 1980—) ,  男 ，本 科 ， 副 高 级 工 程 师， 研究方向 ：土木建筑。

通信作者 ：刘琛  ( 1994—) ,   男 ，本科 ，助理工程师 ，研究方向 ：土木建筑。

收稿日期 ：2022- 07-25