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冯晓晓¹ ,  刘卫然^2 ,3 , 杜旭冉⁴ ,  吴昊天² , 于海丰^2 ,3

 

( 1. 石家庄市政工程有限公司 , 石家庄   050011 ;  2.  河北科技大学 建筑工程学院 ,  石家庄   050018 ;

3. 河北省房屋建筑工程更新技术创新中心 , 石家庄   050018 ;  4.  中冶检测认证有限公司 ,  北京    100088)

摘  要 :  为研究盘轮扣复合型钢管支撑架的失稳机理与破坏模式 , 开展了 7 组足尺模型试验 , 研究连接方式 、水平杆步距 、立杆间距及斜杆布置等因素对其力学性能的影响 。结果表明 : 采用盘扣式连接 、减小水平杆步距 、缩小立杆间距以及合理布置斜杆均可提高支撑架体系的稳定承载力 ; 将试验结果与现行规范计算值进行对比发现 , 试验值为规范值的 1. 36 ~ 2. 53 倍 , 表明现行规范在总体上能够保证架体的安全 , 且具有一定的安全储备 。研究成果可为盘轮扣复合型钢管支撑架安全设计与施工优化提供重要试验依据。

关键词 : 盘轮扣复合型钢管支撑架 ; 足尺试验 ; 稳定承载力

中图分类号 : TU371. 2           文献标志码 : A           文章编号 :  1005- 8249  (2026)  03-0139-06

DOI :10. 19860/j. cnki. issn1005- 8249. 2026. 03. 023

 

FENG Xiaoxiao¹ , LIU Weiran^2 ,3 , DU Xuran⁴ , WU Haotian² , YU Haifeng^2 ,3

( 1. Shijiazhuang Municipal Engineering Co. ,  Ltd.  , Shijiazhuang 050011 , China;

2. School of Civil Engineering , Hebei University of Science and Technology , Shijiazhuang 050018 , China;

3. Hebei Province Housing Construction Projects Regeneration Technology Innovation Center , Shijiazhuang 050018 ,  China;

4. Inspection and Certification Co. , Ltd. MCC , Beijing  100088 , China)

Abstract :  To investigate its instability mechanism and failure mode , seven full-scale model tests were conducted to examine the effects of connection type , horizontal step distance , vertical post spacing , and diagonal bracing arrangement on its mechanical performance.   The  results  indicate that adopting disk - lock connections ,  reducing the step distance and post  spacing , and rationally arranging diagonal braces can effectively enhance the stability capacity of the support system.   A comparison of the test results with the calculated values from current codes shows that the test values are 1. 36 to 2. 53 times the code values , indicating that the current codes generally ensure the safety of the scaffold and provide a certain safety margin.   The research findings offer important experimental references for the safety design and construction optimization of composite disk-lock and wheel-coupler  type steel scaffolds.

Key words :  composite disk-lock and wheel-coupler type steel scaffold; full-scale test; stability capacity