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任雪萍 ， 劉    琛 ， 張    成

（ 天津市水利工程有限公司 ，天津 300222)

摘   要 ：為提升腳手架搭建的穩定性，提升建筑施工的安全性，研究分析裝配式腳手架結構整體穩定承載力。利用ANSYS 有限元軟件建模并計算分析裝配式腳手架在不同節點連接剛度 、高寬比 、初始缺陷 、集中荷載以及腳手架跨數等影響因素下的結構整體穩定承載力 。軟件計算仿真實驗結果顯示：節點連接剛度與腳手架承載力呈正比例關系，25 kN ·m/rad 以后上升趨勢較為緩慢；高寬比 、初始缺陷 、集中荷載較大情況下腳手架穩定承載力呈下降趨勢；當集中應力出現在腳手架的腳手板上時，對于腳手架的穩定承載力最大； 當腳手架跨數 為 6 時，其穩定承載力效果最佳 。基于此，在搭建裝配式腳手架時需要適當調整初始缺陷 、高寬比與跨數，選取合適節點連接剛度。

關鍵詞 ：裝配式 ；腳手架 ；結構整體 ；穩定承載力 ；ANSYS 有限元軟件 ；集中荷載

中圖分類號 ：TU974           

文獻標志碼 ：A           

文章編號 ：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

作者簡介： 任 雪 萍  ( 1980—) ,  男 ，本 科 ， 副 高 級 工 程 師， 研究方向 ：土木建筑。

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

收稿日期 ：2022- 07-25