by clicking the arrows at the side of the page, or by using the toolbar.
by clicking anywhere on the page.
by dragging the page around when zoomed in.
by clicking anywhere on the page when zoomed in.
web sites or send emails by clicking on hyperlinks.
Email this page to a friend
Search this issue
Index - jump to page or section
Archive - view past issues
Concrete In Australia : September 2013
64 Concrete in Australia Vol 39 No 3 for elastic reverse loading; for moderate scale earthquake (S1) and large elastic-plastic reverse loading: for violent earthquakes (S2). 7.0 FATIGUE PERFORMANCE Where splices are used in structures subject to dynamic loading such as bridge decks, oil rigs or tall slender masts, the splice must display suitable fatigue endurance, in terms of stress and number of cycles. e results are normally presented in the form of a logarithmic S-N diagram (see Figure 4). Determination of fatigue performance requirements for a splice connection is probably the most difficult to standardise as test requirements differ internationally. Fatigue testing is also expensive because of the test machine time required to run several million cycles. e Standard ISO 15835 provides a good base specification for fatigue testing. Ideally, tests are undertaken for four stress ranges and the stress ranges selected such that the slope of the two lines forming the S-N curve (see Figure 4) can be determined, this then gives an overall picture of the fatigue performance for a particular splice. 8.0 CONCLUSION In conclusion, test specifications for mechanical splices vary, dependent upon the specifying authority and country and application. Where mechanical reinforcing bar couplers are considered for use, the designer should ascertain the required coupler performance criteria and consult with manufacturers who can provide expertise in the selection of an appropriate and economical system. REFERENCES 1. International organisation for standardisation. ISO 15835. Mechanical splices for bars, Part 1, Requirements, and Part 2, Test m ethods. 2. AS 4671:2001 Steel reinforcing materials. 3. SRIA - Steel Reinforcing Institute of Australia. www.sria. com.au 4. ACRS - Australian Certification Authority for Reinforcing Steel. www.steelcertification.com.au Figure 4. S-N diagram.