Test Investigation on Stiffness Performance of Steel Structures Composed of Cold-roller-bent Pipes
Curve-shaped roofs and facades are popularly used in the construction with roller bent pipe,which serves as structural element.Roller bent pipe are manufactured from straight pipe by a process called roller bending.The material is cold worked during forming,inducing a new distribution of mechanical properties across the section which is different compared to its original state.For a long time,original mechanical properties of the straight material are used in the design of curved structure.The influence of the roller bending process is usually ignored non-conservatively.Theoretically,cold-working makes the strength increased while the modulus decreased.The results of a series of tests and measuring investigation of the mechanical properties of cold-roller-bent pipes are present in this paper.The decreased modulus of cold-roller-bent pipes have significantly softened and weakened the overall mechanical properties of structures.The influence should be considered in the design of structures composed of cold-roller-bent pipes.
cold roller bending arced pipe curved truss stiffness performance
Wenbo Sun Weijian Zhou
Architect Design and Research Institute, South China University of Technology, Guangzhou,P.R.China School of Civil and Traffic Engineering, South China University of Technology, Guangzhou,P.R.China
国际会议
香港
英文
519-523
2012-12-11（万方平台首次上网日期，不代表论文的发表时间）