Ultimate Strength of Annular Reinforced Concrete Members Under Combined Actions

doi:10.1007/s12204-019-2088-0

Abstract

Abstract: Annular reinforced concrete (RC) members are commonly used in bridge structures and offshore platforms. These RC members often fail under the combined actions of axial force, bending moment, shear force and torsion load in hazards of earthquake and wind. It is very important to study the failure mechanism of annular RC members under combined actions. This study proposes a model to analyze the ultimate strength of annular RC members under combined actions using limit failure theory. A new method is established to determine the geometric parameters of the warped failure surface, and the new calculation model for the ultimate strength is obtained using the equilibrium conditions based on the geometric parameters and the stress distribution on the failure surface. The proposed model calculations are compared with a series of experimental results of annular RC members, and they correspond well with the experimental results. The proposed model is feasible for engineering application.

Key words: combined loads| limit failure theory| annular reinforced concrete (RC) members| ultimate strength

摘要： Annular reinforced concrete (RC) members are commonly used in bridge structures and offshore platforms. These RC members often fail under the combined actions of axial force, bending moment, shear force and torsion load in hazards of earthquake and wind. It is very important to study the failure mechanism of annular RC members under combined actions. This study proposes a model to analyze the ultimate strength of annular RC members under combined actions using limit failure theory. A new method is established to determine the geometric parameters of the warped failure surface, and the new calculation model for the ultimate strength is obtained using the equilibrium conditions based on the geometric parameters and the stress distribution on the failure surface. The proposed model calculations are compared with a series of experimental results of annular RC members, and they correspond well with the experimental results. The proposed model is feasible for engineering application.

关键词: combined loads| limit failure theory| annular reinforced concrete (RC) members| ultimate strength

CLC Number:

TU 375

WANG Pu (王璞), ZHOU Dai (周岱), HUANG Zhen* (黄真). Ultimate Strength of Annular Reinforced Concrete Members Under Combined Actions[J]. Journal of Shanghai Jiao Tong University (Science), 2019, 24(4): 430-438.

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