Research on the Stability of Heavy-Duty Socket-Type Disc-Buckle Scaffolding Under Random Bending Stiffness

Zhengqiang Mou; Yanjun Xu; Wei Zhao; Wei Li; Rui Qiu; Ni Zhang; Zhongwei Zhao

doi:10.13206/j.gjgS25021203

Volume 41 Issue 2

Feb. 2026

Turn off MathJax

Article Contents

Article Navigation > STEEL CONSTRUCTION(Chinese & English) > 2026 > 41(2): 39-48

Zhengqiang Mou, Yanjun Xu, Wei Zhao, Wei Li, Rui Qiu, Ni Zhang, Zhongwei Zhao. Research on the Stability of Heavy-Duty Socket-Type Disc-Buckle Scaffolding Under Random Bending Stiffness[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(2): 39-48. doi: 10.13206/j.gjgS25021203

Citation:

Zhengqiang Mou, Yanjun Xu, Wei Zhao, Wei Li, Rui Qiu, Ni Zhang, Zhongwei Zhao. Research on the Stability of Heavy-Duty Socket-Type Disc-Buckle Scaffolding Under Random Bending Stiffness[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(2): 39-48. doi: 10.13206/j.gjgS25021203

Citation:

Zhengqiang Mou, Yanjun Xu, Wei Zhao, Wei Li, Rui Qiu, Ni Zhang, Zhongwei Zhao. Research on the Stability of Heavy-Duty Socket-Type Disc-Buckle Scaffolding Under Random Bending Stiffness[J]. STEEL CONSTRUCTION(Chinese & English), 2026, 41(2): 39-48. doi: 10.13206/j.gjgS25021203

PDF( 3551 KB)

Research on the Stability of Heavy-Duty Socket-Type Disc-Buckle Scaffolding Under Random Bending Stiffness

doi: 10.13206/j.gjgS25021203

1. Shaanxi Construction Engineering Group Co.，Ltd.，Xi’an 710082，China;
2. Shaanxi Railway Construction Engineering Co.，Ltd.，Xi’an 710000，China;
3. School of Civil Engineering，Liaoning Technical University，Fuxin 123000，China

Received Date: 2025-02-12
Available Online: 2026-04-10
Publish Date: 2026-02-22

Abstract

Abstract

Scaffolds are widely used in construction projects. However， geometric defects caused by repeated use of connection joints can lead to reduced stability and frequent accidents. To address this， this study establishes a refined random finite element model of the scaffold using the random defect method via ANSYS software. This approach enables a realistic investigation into how defects in each connection node affect the overall stability of the scaffold. The research further focuses on the more commonly used socket-type disc-buckle scaffolds with scissor braces. The influence of the number of spans， planar layout， and joint density on the stability provided by the scissor braces is revealed. The results indicate that horizontal scissor braces have a negligible effect on scaffold stability. When the joint bending stiffness is high， the bearing capacity of each joint is the primary factor supporting the structure. As the joint bending stiffness decreases， the combined action of the scissor braces and wall ties becomes the main factor influencing frame stability. For brace layouts of 2×2 or 2×4， joint density has a more pronounced effect on the stability of scaffolds equipped with top wall ties. When the joint bending stiffness is fixed， the number of transverse and longitudinal spans， as well as the joint density， should be maximized to achieve the greatest improvement in scaffold stability.

FullText(HTML)

References(23)

References

[1]	刘辉，郑向莞，张智超，等. 定量改进JHA法的建筑施工高危作业风险分析[J]. 中国安全科学学报，2019，29（4）：146-151.
[2]	刘浩研. 高支模坍塌事故致因分析与对策研究[D]. 徐州：中国矿业大学，2019.
[3]	Zhao Z，Chen Z，Yan X，et al. Simplified numerical method for latticed shells that considers member geometric imperfection and semi-rigid joints[J]. Advances in Structural Engineering，2016，19（4）：689-702.
[4]	Zhao Z，Chen Z，Liu H，et al. Investigations on influence of erection process on buckling of large span structures by a novel numerical method[J]. International Journal of Steel Structures，2016，16（3）：789-798.
[5]	Zhao Z，Liu H，Liang B. Novel numerical method for the analysis of semirigid jointed lattice shell structures considering plasticity[J]. Advances in Engineering Software，2017，114：208-214.
[6]	陈桂香，郭泽群，胡德平，等. 承插型盘扣式钢管支架盘扣节点扭矩-转角模型适用性研究[J]. 西安建筑科技大学学报（自然科学版），2020，52（2）：192-199.
[7]	王凝，曾凡奎，曲丹丹，等. 不同楔紧度下的盘扣式钢管脚手架的节点受力性能试验分析[J]. 工业建筑，2025，55（5）：104-112.
[8]	Zheng Y F，Guo Z X. Investigation of joint behavior of disk-lock and cuplok steel tubular scaffold[J]. Journal of Constructional Steel Research，2020，177：106415.
[9]	Zhao Z W，Liu H Q，Dong J F，et al. Buckling capacity of socket-template scaffold system[J]. Journal of Performance of Constructed Facilities-ASCE，2020，34（1）：04019089.
[10]	刘京红，李文坡，张凌博，等. 承插型盘扣式钢管支撑脚手架试验及有限元分析[J]. 北京理工大学学报，2023，43（5）：478-484.
[11]	许强，叶继红. 基于杆系离散元的半刚性连接数值计算方法研究[J]. 建筑结构学报，2022，43（12）：311-321.
[12]	董金凤. 考虑节点半刚性盘扣式支模架稳定承载力理论与试验研究[D]. 阜新：辽宁工程技术大学，2022.
[13]	Peng J L，Wang C S，Lin C C，et al. Stability of independent heavy-duty scaffolds：an experi-mentalstudy[J]. Advanced Steel Construction 2017，13：318-342.
[14]	董金凤. 半刚性节点轮扣式高大支模体系屈曲性能研究[D]. 阜新：辽宁工程技术大学，2019.
[15]	Lu Z，Guo C. Probabilistic analysis of derrick frame in a formwork support system[J]. Ain Shams Engineering Journal，2023，14（5）：101977.
[16]	候丹涛，曾凡奎，郭君. 附着式升降脚手架现场试验研究与有限元分析[J]. 土木工程与管理学报，2022，39（5）：145-151.
[17]	陈志华，陆征然，王小盾，等. 基于有侧移半刚性连接框架理论的无支撑模板支架稳定承载力分析及试验研究[J]. 建筑结构学报，2010，31（12）：56-63.
[18]	陆征然，陈志华，王小盾，等. 扣件式钢管满堂支撑体系稳定性的有限元分析及试验研究[J]. 土木工程学报，2012，45（1）：49-60.
[19]	Zhao Z W，Liu H Q，Liang B，et al. Simplified beam element model for progressive collapse analysis of steel frame structures with semi-rigid connection[J]. Structures and Buildings，2018，172（2）：1-14.
[20]	刘哲，刘战伟，张兆龙，等. 重型承插型盘扣式钢管脚手架连接节点抗弯性能研究[J]. 施工技术（中英文），2024，53（2）：110-116.
[21]	Zhao Z W，Liang B，Li S R，et al. Buckling capacity of socket template scaffold with random bending stiffness and capacity[J]. Structures，2024，71：108152.
[22]	Zhang N，Qiu R，Zhao Z W，et al. Influence of random geometrical imperfection on loading capacity of scaffold based on stochastic numerical model[J]. Advances in Engineering Software，2024，197：103737.
[23]	中华人民共和国住房和城乡建设部. 建筑施工承插型盘扣式钢管脚手架安全技术标准：JGJ/T 231—2021[S]. 北京：中国建筑工业出版社，2021.