Punching shear strength of steel fibre reinforced concrete slabs

被引：107

作者：

Maya, L. F. ^{[1
]}

Ruiz, M. Fernandez ^{[1
]}

Muttoni, A. ^{[1
]}

Foster, S. J. ^{[2
]}

机构：

[1] Ecole Polytech Fed Lausanne, Stn 18, CH-1015 Lausanne, Switzerland

[2] Univ New S Wales, Sch Civil & Environm Engn, Sydney, NSW 2052, Australia

来源：

ENGINEERING STRUCTURES | 2012年 / 40卷

关键词：

Punching; Fibre reinforced concrete; Critical shear crack theory; Variable Engagement Model; Design models; COLUMN CONNECTIONS; TRANSVERSE REINFORCEMENT; BEHAVIOR; COLLAPSE; TESTS;

D O I：

10.1016/j.engstruct.2012.02.009

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

The ultimate strength of reinforced concrete slabs is frequently governed by the punching shear capacity, which may be increased with addition of traditional fitments such as reinforcing steel, headed studs or shear heads. In addition to these traditional methods of strengthening against punching, steel fibre reinforcement has proved to be an effective and viable alternative. The addition of fibres into the concrete improves not only the shear behaviour but also the deformation capacity of reinforced concrete slabs. This paper presents a mechanical model for predicting the punching strength and behaviour of concrete slabs reinforced with steel fibres as well as conventional reinforcement. The proposed model is validated against a wide number of available experimental data and its accuracy is verified. On this basis, a simple design equation for the punching shear capacity of steel fibre reinforced concrete (SFRC) slabs is proposed. Crown Copyright (C) 2012 Published by Elsevier Ltd. All rights reserved.

引用

页码：83 / 94

页数：12

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