An investigation on the behaviour and stiffness of reinforced concrete slabs subjected to torsion

5th Global Conference on Materials Science and Engineering

Nguyen, M.C.T.^1,2 ; Pham, P.T.^1

Faculty of Civil Engineering, Hanoi Architectural University, Km 10 Nguyen Trai Street, Thanh Xuan District, Hanoi, Viet Nam^1

Faculty of Engineering and Technology, Quy Nhon University, 170 An Duong Vuong Street, Quy Nhon, Viet Nam^2

关键词: Cracking of concrete;    Load displacements;    Pre-cracking;    RC slab;    Square RC slabs;    Torsional stiffness;    Twisting moment;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/164/1/012017/pdf
DOI  :  10.1088/1757-899X/164/1/012017

来源: IOP

【 摘 要 】

This paper presents an investigation on RC slab under torsion, by both experiment and finite element analysis. The torsion tests were done on three similar square RC slabs with dimensions of 1900×1900×150 mm. The behaviour of slabs at pre-cracking and post-cracking of concrete phases were investigated, via Load-displacement, twisting moment-curvature relationships, and torsional stiffness of slabs. The experimental results are compared with the FEA and the results in literatures. The torsional stiffness of slab at the phase of concrete cracked and steel yield is about 1/25 of the stiffness at the pre-cracking phase.