模板支撑系统承载性能的试验研究

Experimental research on the bearing capacity of fastener tubular steel scaffold

为研究模板支撑体系的承载力和稳定性等承载性能,介绍一种足尺试验研究方法和一种单元架试验研究方法.以足尺试验方法对扣件式模板支撑系统展开研究,通过数值模型预分析得到模板整架的主要受力构件以及架体屈曲时的承载力、位移和失稳模式,确定试验应变片的粘贴位置和加载机制,并运用经纬仪和铅锤测量加载过程中架体的位移变化.以单元架试验方法对插口式模板支撑系统展开研究,结合有限元预分析确定试验加载方案和监测内容,对比了试验结果之间的异同,分析了差异原因.为研究模板支撑体系的应用性能提供了可靠的测试方法,为后续研究奠定了试验基础.

A full scale experiment method and a unit frame experiment method is intruduced to research the bearing capacity of tubular steel scaffold. The full scale experiments on steel tubular scaffold with couplers were made to obtain the main bearing components of the scaffold, the bearing capacity, displacement, and buckling mode when destroyed,by numerical analysis. Then,the location of strain gauge,the loading mechanism were determined and the displacement was by level and plumb during the experiment. The unit frame experiments on socket -spigot scaffold was made to determine the loading mechanism and monitoring contents by combining the numerical analysis,contrasting the similarities and differences between experimental results. The reasons about the differences were analyzed. This paper introduced an experiment about the fastener tubular steel scaffold, and laid the foundation for further research.