Measurement techniques in the testing of thin-walled structural members
- 121 Downloads
The paper describes methods for measuring displacements and end moments in the testing of thin-walled columns. The complete spatial deformation of a column can be captured by using local and overall deformation measurement frames. The local frame involves spring-loaded levers and roller bearings to mount the frame on to the specimen. The overall frame slides along high-precision shafts using linear ball bearings. Fixed-ended bearings are used to measure minor and major axis bending moments as well as the applied load. The bearings allow the line of action of the applied force to be determined.
Key WordsThin-walled members buckling displacement measurement spatial displacements fixed-ended bearings
Unable to display preview. Download preview PDF.
- 1.Australian/New Zealand Standard, “Cold-formed Steel Structures, AS/NZS 4600:1996,”Standards Australia, Sydney, Australia (1996).Google Scholar
- 2.Young, B., andRasmussen, K.J.R., “Tests of Fixed-ended Plain Channel Columns,”J. Struct. Eng., ASCE,124,131–139 (1998).Google Scholar
- 3.Young, B., andRasmussen, K.J.R., “Design of Lipped Channel Columns,”J. Struct. Eng., ASCE,124,140–148 (1998).Google Scholar
- 4.Popovic, D., Hancock, G.J., andRasmussen, K.J.R., “Axial Compression Tests of Cold-formed Angles,”J. Struct. Eng., ASCE,125,515–523 (1999).Google Scholar
- 5.Rasmussen, K.J.R., andHancock, G.J., “The Flexural Behaviour of Fixed-ended Channel Section Columns,”Thin-Walled Struct.,17,45–63 (1993).Google Scholar
- 6.American Iron and Steel Institute, “Specification for the Design of Cold-formed Steel Structural Members,”AISI, Washington, DC (1996).Google Scholar