建筑钢结构进展2025，Vol.27Issue(12)：79-88,10.DOI:10.13969/j.jzgjgjz.20240710001
盘扣式脚手架节点抗弯性能研究
Study on Flexural Performance of Disk-Lock Scaffold Joints
摘要
Abstract
The semi-rigid properties of disk-lock scaffold joints cause considerable geometric nonlinearity under load,weakening structural stability.This study employs numerical simulation and full-scale test to examine the flexural performance of these joints.First,three identical full-scale specimens were fabricated to measure the joint bending stiffness and ultimate bending capacity.Based on the load-displacement curves,a tri-linear bending stiffness calculation model was developed for the disk-lock joints.Next,a detailed finite element model of the test joints was created using ABAQUS software,and this model was validated against experimental data to determine the stress distribution and failure modes during loading.Finally,the joints'bending stiffness was integrated into an overall scaffold structural model to analyze its impact on overall structural stability.The study reveals that while considering the actual bending stiffness of the joints does not significantly alter the overall buckling mode of the scaffold,it results in a 20.84%reduction in the structural nonlinear ultimate load-bearing capacity.关键词
盘扣式脚手架节点/半刚性/抗弯试验/精细化有限元模型/整体稳定性/失稳模式Key words
disk-lock scaffold joint/semi-rigid/flexural test/refined finite element model/overall stability/buckling mode分类
建筑与水利引用本文复制引用
张东川,王月川,纪浩平,张昌龙,严仁章,赵中伟..盘扣式脚手架节点抗弯性能研究[J].建筑钢结构进展,2025,27(12):79-88,10.基金项目
重庆市教委科学技术研究项目(KJQN202403002) （KJQN202403002）
