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- Title
Experimental testing of a rocking timber shear wall with slip-friction connectors.
- Authors
Loo, Wei Y.; Kun, Chern; Quenneville, Pierre; Chouw, Nawawi
- Abstract
SUMMARY Allowing a structure to uplift and rock during an earthquake is one way in which activated forces can be capped and damage to the structure avoided or minimised. Slip-friction connectors (also known as slotted-bolt connectors) were originally developed for use in steel construction, but for this research have been adapted for use as hold-downs in an experimental 2.4 m × 2.4 m rigid timber shear wall. A novel approach is used to achieve the desired sliding threshold in the connectors, and the wall uplifts when this threshold is reached. From a series of quasi-static cyclic tests, it is shown that slip-friction connectors can impart ductile and elasto-plastic characteristics to what would otherwise be essentially brittle structures. Because forces on the wall were capped by the slip-friction connectors to levels well below the design level, no damage to the wall was observed. Self-centring potential was also found to be excellent. The slip-friction connectors themselves are of a unique design and have proven to be robust and durable, adequately performing their duty even after almost 14 m of cumulative travel under high contact pressures. To resist base shear without unduly affecting rocking behaviour, a new type of shear-key is proposed and implemented, and a procedure developed to quantify its influence on overall wall behaviour. Copyright © 2014 John Wiley & Sons, Ltd.
- Subjects
SHEER walls testing; EARTHQUAKE engineering; WOODEN building; TIMBER; CONSTRUCTION materials
- Publication
Earthquake Engineering & Structural Dynamics, 2014, Vol 43, Issue 11, p1621
- ISSN
0098-8847
- Publication type
Article
- DOI
10.1002/eqe.2413