Effects of in-plane loading on the out-of-plane stability of slender reinforced concrete masonry shear walls

2016 ◽  
pp. 1847-1856 ◽  
Author(s):  
B.R. Robazza ◽  
T.Y. Yang ◽  
K.J. Elwood ◽  
D.L. Anderson ◽  
S. Brzev ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Shear Walls ◽  
Concrete Masonry ◽  
Out Of Plane

Behavior of fully grouted reinforced concrete masonry shear walls failing in flexure: Analysis

2009 ◽  
Vol 31 (9) ◽  
pp. 2032-2044 ◽  
Author(s):  
Marwan T. Shedid ◽  
Wael W. El-Dakhakhni ◽  
Robert G. Drysdale
Keyword(s):  
Reinforced Concrete ◽  
Shear Walls ◽  
Concrete Masonry

Seismic Performance of Cantilever-Reinforced Concrete Masonry Shear Walls

2014 ◽  
Vol 140 (9) ◽  
pp. 04014051 ◽  
Author(s):  
Farhad Ahmadi ◽  
Jaime Hernandez ◽  
Jacob Sherman ◽  
Christina Kapoi ◽  
Richard E. Klingner ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Shear Walls ◽  
Concrete Masonry

scholarly journals Seismic resistance of reinforced concrete-masonry shear walls with high steel percentages

1977 ◽  
Vol 10 (1) ◽  
pp. 1-16
Author(s):  
M. J. N. Priestley
Keyword(s):  
Shear Stress ◽  
Reinforced Concrete ◽  
Shear Failure ◽  
Hysteresis Loops ◽  
Shear Walls ◽  
Shear Stresses ◽  
Test Results ◽  
Displacement Ductility ◽  
Ultimate Shear Stress ◽  
Concrete Masonry

This paper summarizes test results of six heavily reinforced concrete masonry shear walls. The test programme was designed to investigate the necessity for the low ultimate shear stress specified by Masonry codes. Care was taken to accurately model good, but realistic design practice in detailing, and variables investigated in the series included steel percentage, influence of vertical load and confinement of potential crushing areas by mortar bed confining plates. Results are presented which clearly indicate that the maximum current code allowance for ultimate shear stress is unreasonably low. No wall suffered diagonal shear failure despite maximum shear stresses exceeding
four times the maximum code level. All walls displayed stable hysteresis loops at a displacement ductility factor of 2, and the less heavily reinforced walls (designed to approximately twice code levels) were satisfactory at
 DF = 4. Degradation was never catastrophic and occurred due to slip of the entire wall along the foundation beam. Methods for reducing the degradation are discussed. Confining plates did not significantly reduce the degradation of the hysteresis loops, but substantially reduced damage to the walls
 at high ductility factors. Values of required ductility for walls designed to the Loadings Code are investigated, and on the basis of these and the experimental results, recommendations are made for relaxation to the ultimate shear provisions of the masonry code.

scholarly journals Out-of-plane performance of a partially filled reinforced concrete masonry wall with Ribraft_TM floor

1999 ◽  
Vol 32 (2) ◽  
pp. 90-101
Author(s):  
S.S. Singh ◽  
N. Cooke ◽  
D.K. Bull
Keyword(s):  
Reinforced Concrete ◽  
Limit State ◽  
Masonry Wall ◽  
Ultimate Limit State ◽  
Plane Failure ◽  
Strength Performance ◽  
Yield Line Theory ◽  
Concrete Masonry ◽  
Out Of Plane ◽  
Line Theory

This paper presents the results of an experimental investigation by Singh (1998) [1], into the serviceability and strength performance of a full-scale reinforced concrete masonry wall with RibraftTM floor. The wall was C-shaped in plan and was partially grouted. The results show that the masonry wall behaved in a ductile manner, and that response remained elastic to an out-of-plane load of approximately 6 kPa. The wall reached the Ultimate Limit State deflection criterion of 50 mm (2% drift) at a load of 7.6 kPa. The crack and deflection patterns were as predicted by the yield-line theory, which however, provided a conservative estimate of the out-of-plane failure load of 5.0 kPa. The test was halted at a load of 10.7 kPa at which point the main wall had not collapsed and was still being supported by the return walls. The RibraftTM floor behaved elastically, except for a local failure restricted to minor spalling of the wall foundations.

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