Uniaxial compressive stress-strain model for high-strength concrete confined with high-strength lateral ties

作者：Shi Qing Xuan; Wang Nan^*; Wang Qiu Wei; Men Jin Jie

来源：Engineering Mechanics, 2013, 30(5): 131-137.

DOI：10.6052/j.issn.1000-4750.2011.12.0894

• Concrete components
• Confined concrete
• Experimental curves
• High strength concretes
• High-strength
• Mechanical behavior
• Stress-strain model
• Uniaxial compressive

Lateral ties in the concrete component play an important role in overcoming the fragility of high-strength concrete. High-strength lateral ties can improve the mechanical behavior of compressed members effectively. Meanwhile, as a basis requirement in the nonlinear analysis of a structure, the stress-strain model has a remarkable influence on the validity of computed results. Based on a series of experimental results of concrete specimens confined with high-strength lateral ties subjected to axial loading, a modified confined concrete model is developed. The stress of high-strength lateral ties is analyzed, the formulas to determined peak stress, peak strain and ultimate strain are proposed. The results show a good agreement with experimental curves. The model is feasible in the nonlinear analysis of the confined concrete member confined with high-strength lateral ties.

• 出版日期2013