Influence of High Axial Tension on the Shear Strength of non-shear RC Beams

Abstract

<p>This paper deals with the influence of high axial tension on the shear strength of beams without shear reinforcement. An experimental program with shear-tension tests was carried out. The experimental results have been used to evaluate the applicability of the Eurocode 2 (EC2) design formula in cases with large normal forces. In addition, the experiments have been used to evaluate an extension of the plasticity based Crack Sliding Model (CSM) to cover cases with large normal forces. The test results show, that even in the present of very high axial tensile stresses and strains, the member is still able to carry significant shear stresses. The analysis reveals that the EC2 formula is over conservative in this regard.</p>

Influence of axial tension on the shear strength of RC beams without stirrups

“…Comparison of the proposed empirical relation with the results of tests of Jorgensen et al 20 beam no 9. These values are rather high, but not unrealistic for mild steel, considering the uncertainty about the tests and also in formula (7).…”

“…7 Apart from these first quoted works, many other experimental studies have also been carried out over the last 60 years. Excluding tests on square panels and on shear walls, considering only tests on beam-like elements: Mattock 14 ; Haddadin et al 15 ; Soresen 2 ; Bhide and Collins 4 ; Tamura et al 16 ; Adebar and Collins 17 ; Xie 18 ; Galmarini et al 19 ; Jorgensen et al 20 ; or more recently Fernandez-Montes et al. 10 These studies may help recognize the critical roles played by some geometric parameters or boundary conditions, but need to be analyzed more deeply to eradicate the apparent divergences between the existing experimental results.…”

Versuche zum Querkrafttragverhalten bei gleichzeitiger Zugnormalkraft

“…Auf Basis einer eigenen Literaturrecherche wurden verfügbare Querkraftversuche unter gleichzeitiger Zugnormalkraftbeanspruchung tabellarisch zusammengestellt. Insgesamt wurden die Daten von 171 Bauteilversuchen aus folgenden Quellen aufgenommen: . Darin enthalten sind auch die jeweiligen Referenzversuche unter reiner Querkraftbeanspruchung.…”

Experimental investigation of the shear strength of one‐way reinforced concrete (RC) slabs subjected to concentrated loads and in‐plane transverse axial tension

“…More recently, laboratory tests were conducted at the Technical University of Denmark 13 in beams reinforced symmetrically using high performance steel ( f y = 1027 MPa) with a longitudinal tensile reinforcement ratio ρ = 0.88%. Tested beams showed almost no influence of tension on the shear strength for tensile stresses up to 7.5 MPa.…”