Experiment Study on Compressive Membrane Action of Slab Strips Restrained by Shear Walls

Abstract:

Subjecting to the compressive membrane action (CMA), the ultimate load capacity of the reinforced concrete (RC) slab with lateral restraint would be improved obviously. Test of 12 one-way slab specimens restrained by shear-walls was carried out to investigate the properties of the slab strips’ compressive membrane action. The reduced-size specimens were designed to keep the ratios of shear-walls’ restraint stiffness to slab strips’ flexural stiffness unchanged. One horizontal testing instrument was first used to record the development of the slabs’ lateral restraint forces. The ultimate loads of slab strips with certain lateral restraint stiffness gave an average 38.3% rise from the calculations of upper-bound method. Though the increment of slab’s ultimate load was due to the additional moment formed by the lateral restraint force, the results showed that the peak of lateral force lagged of the slab strips’ ultimate load, which was different from the previous hypothesis. Various parameters which affect the development of CMA were also investigated, such as the shear-wall’s thickness, axial load on the walls, the slab strips’ span-height ratio and reinforcement percentage.

• Periodical: Key Engineering Materials (Volumes 417-418)
• Pages: 805-808
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.417-418.805
• Online since: October 2009
• Authors: Qing Xiang Wang, Gang Wang, Zhong Jun Li
• Keywords: Compressive Membrane Action, Experimental Study, Lateral Restraint force, Slab Strip

References

[1] Park R, Gamble W L: Reinforced Concrete Slabs (JOHN WILEY & SONS, New York 1980).

[2] Rankin G I B, Long A E: Proc of ICE, Structures and Buildings Vol. 122 (1997) pp.461-467.

[3] Taylor S E, Mullin B: Construction and Building Materials Vol. 20 (2006) pp.71-81.

[4] Lahlouh E H, Waldron P: Proc of ICE, Structures and Buildings Vol. 94 (1992) pp.419-428.

[5] Muthu K U, Amarnath K, Ibrahim A: Engineering Structures Vol. 29 (2007) pp.663-674.

[6] GB50010 Code for design of concrete structures (Beijing 2002).