Deformation Capacity of Structural Concrete in Disturbed Regions

作者：Hong Sung Gul^*; Hong Namhee K; Jang Sang Ki

来源：ACI Structural Journal, 2011, 108(3): 267-276.

• bending mechanism
• deformation
• failure mechanisms
• hyperbolic curve
• rotational mechanism
• stress
• strut
• translational mechanism

The design of structural concrete in disturbed regions such as shear critical members with limited ductility should be based on a realistic estimation of the deformation capacity. The deformation capacity of structural concrete, which is mostly controlled by the ultimate compressive strain of concrete regardless of whether the reinforcement yields, is estimated on the construction of bending and translational and rotational failure mechanisms for compression struts. This study presents a novel methodology for estimating the deformation capacity of structural concrete in disturbed regions that is based on the principle of the limit analysis and uses failure mechanisms compatible with strut-and-tie models (STMs). The proposed model reasonably estimates the deformation capacity of deep beams and coupling beams relying on diagonal struts for shear transfer that fail due to the crushing of the struts.

• 出版日期2011-6