Punching shear behavior of reinforced concrete flat slabs with a varying amount of shear reinforcement

2019 ◽  
Vol 21 (1) ◽  
pp. 235-246 ◽  
Author(s):  
Philipp Schmidt ◽  
Dominik Kueres ◽  
Josef Hegger
Keyword(s):  
Reinforced Concrete ◽  
Shear Behavior ◽  
Punching Shear ◽  
Shear Reinforcement ◽  
Flat Slabs

scholarly journals New Methods to Resisting Punching Shear Stress in Reinforced Concrete Flat Slabs

2018 ◽  
Vol 8 (02) ◽  
Author(s):  
Fatma M. Eid ◽  
Tayel Magdy ◽  
Ebada Ahmed
Keyword(s):  
Reinforced Concrete ◽  
Shear Failure ◽  
Shear Capacity ◽  
Punching Shear ◽  
Shear Reinforcement ◽  
Reinforcement System ◽  
Strength Concrete ◽  
Flat Slabs ◽  
The Difference ◽  
Compact Strength

Punching shear failure is a major problem encountered in the design of reinforced concrete flat slabs. The utilization of shear reinforcement via shear studs or other means has become a choice for improving the punching shear capacity. In this study, a new alternative of reinforcement modalities were tested and demonstrated the effect of self-compact concrete on the punching shear capacity, beside that compared between the difference codes to identify the suitable one for determining the position of critical section of punching shear. Nevertheless, in this investigation, the proposed reinforcement system is examined for interior columns only. An experimental work consisting of six specimens: five of them were cast with normal reinforced concrete and one was cast with self-compact strength concrete. The obtained results indicate that the proposed shear reinforcement system has a positive effect in the enhancement of the punching shear capacity of interior slab–column connection of self-compact strength concrete.

scholarly journals A Comparative Study of Flat Slabs Using Different Shear Reinforcement Parameters

2018 ◽  
Vol 7 (2.20) ◽  
pp. 321
Author(s):  
N Girish ◽  
N Lingeshwaran
Keyword(s):  
Reinforced Concrete ◽  
Brittle Failure ◽  
Shear Failure ◽  
Crack Pattern ◽  
Steel Plates ◽  
Punching Shear ◽  
Shear Reinforcement ◽  
Flat Slab ◽  
Flat Slabs ◽  
Four Corners

Punching shear failure is a brittle failure and it is one of the most important types of failure to be considered while designing a reinforced concrete flat slab. This paper aims to study the performance of reinforced concrete flat slabs equipped with different punching shear reinforcement parameters. Three flat slab specimens were cast where two specimens contain punching shear reinforcement in the form of shear stirrups and structural shearbands. The test specimens have length and width of 1000mm and thickness of 185mm for the slabs. The slabs are connected to a column at the center with length and breadth of 300mm and a depth of 700mm. The test specimens were supported by steel plates with length and breadth of 150mm and a thickness of 25mm at the four corners of the slab. The test specimens are loaded on the column face at the top. The deflection, strain and crack pattern were observed and recorded.   

scholarly journals Aspects of Finite Element Modeling of Punching Shear Behavior of Reinforced Concrete Flat Slabs

2018 ◽  
Vol 15 (10) ◽  
Author(s):  
Rafael A. Sanabria D. ◽  
Leonardo H. B. de Oliveira ◽  
Leandro Mouta Trautwein ◽  
Luiz Carlos de Almeida ◽  
Antônio Carlos dos Santos
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Modeling ◽  
Shear Behavior ◽  
Punching Shear ◽  
Element Modeling ◽  
Flat Slabs

scholarly journals A punching shear mechanical model for reinforced concrete flat slabs with and without shear reinforcement

2018 ◽  
Vol 166 ◽  
pp. 413-426 ◽  
Author(s):  
Antonio Marí ◽  
Antoni Cladera ◽  
Eva Oller ◽  
Jesús M. Bairán
Keyword(s):  
Reinforced Concrete ◽  
Mechanical Model ◽  
Punching Shear ◽  
Shear Reinforcement ◽  
Flat Slabs

scholarly journals Punching shear in concrete reinforced flat slabs with steel fibers and shear reinforcement

2018 ◽  
Vol 11 (5) ◽  
pp. 1110-1121 ◽  
Author(s):  
T. H. MUSSE ◽  
E. A. P. LIBERATI ◽  
L. M. TRAUTWEIN ◽  
R. B. GOMES ◽  
G. N. GUIMARÃES
Keyword(s):  
Reinforced Concrete ◽  
Steel Fiber ◽  
Failure Surface ◽  
Absorption Capacity ◽  
Steel Fibers ◽  
Punching Shear ◽  
Shear Reinforcement ◽  
Fiber Volume ◽  
Energy Absorption Capacity ◽  
Flat Slabs

Abstract Steel fibers in reinforced concrete increase the performance of slab-column connection once they increase ductility and energy absorption capacity of the concrete. The use of fibers in flat slabs may increase strength and change the mode of failure. The objective of this work is to present an experimental evaluation of punching shear strength of reinforced concrete flat slab with steel fibers and punching shear reinforcement. Eight square slabs, size 1800 mm by 1800 mm by 130mm, were loaded until failure by punching shear around the column. The models were divided in two groups, depending on the type of the concrete used (with or without steel fibers). The steel fiber volume used in the slabs of second group was of 0.9%. Each group was composed of four slabs: one without shear reinforcement and three with shear reinforcement (studs) distributed radially around the column. The use of steel fibers increased the ultimate strength of all flat slabs. In one of the slabs, the association of steel fibers with shear reinforcement changed the failure surface from outside to inside the punching shear reinforcement region.

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