轮扣式钢管脚手架稳定承载力的试验研究  

EXPERIMENTAL INVESTIGATION ON THE STABILITY CAPACITY OF WHEEL-COUPLER STEEL TUBULAR SCAFFOLDS

作　　者：闫晓 宋沙沙 陈驹[2] YAN Xiao;SONG Shasha;CHEN Ju(DongFang Boiler Group Co.,Ltd.,Chengdu 611731,China;Zhejiang University,Department of Civil Engineering,Hangzhou 310058,China)

机构地区：[1]东方电气集团东方锅炉股份有限公司,成都611731 [2]浙江大学建筑工程学院,杭州310058

出　　处：《低温建筑技术》2022年第3期102-107,118,共7页Low Temperature Architecture Technology

摘　　要：对14个轮扣式钢管脚手架进行稳定承载力试验研究,试验结果表明,脚手架的破坏模式均为立杆的整体失稳破坏,稳定承载力随跨距的增大而减小;接长杆应严格控制套管与钢管之间的空隙;同一脚手架中边杆的纵向应变最大,角杆次之,中杆最小。采用地标及行标对脚手架立杆的稳定承载力进行计算并与试验值对比:行业标准评估结果相对较准确。最后提出了新的脚手架立杆稳定承载力计算公式,对比发现文中提出公式具有良好的适用性。The stability capacity of fourteen wheel-coupler steel tubular scaffolds were experimental investigated.The results show that the failure mode of all scaffolds was the overall instability failure of vertical components, in which the stability capacity of scaffold decreases with the increase of span. The split joint gap of extension components should be strictly controlled, and the longitudinal strain of the side components was the largest;the angle components of that was the second;the middle components of that was the smallest. The stability capacity of scaffold standards were calculated by using the local standards and industry standards respectively. The comparison between the predicted values of the specifications and the test values shows that the industry standards were relatively accurate. Finally, a new design equation for the stability capacity of scaffold components was proposed. The comparison between the design predictive values and the test values shows that the proposed equation has good applicability.

关 键 词：脚手架 轮扣式 试验研究 稳定性 承载力 

分 类 号：TU391[建筑科学—结构工程]