| Civil Engineering |
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| Coupled elasto-plasticity damage constitutive models for concrete |
| Qiang Xu, Jian-yun Chen, Jing Li, Gang Xu |
| State Key Laboratory of Coastal and Offshore Engineering, Dalian University of Technology, Dalian 116023, China; School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian 116023, China; Plan and Design Institute of Daqing Oilfield Communication Company, Daqing 163453, China |
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Abstract The paper is to design and construct a coupled elasto-plasticity damage constitutive model for concrete. Based on the energy dissipation principle, the Hsieh-Ting-Chen four-parameter yield function is used. The model can reflect different strength characteristics of concrete in tension and compression, and reduce the limitation and lacuna of the traditional damage constitutive models for concrete. Furthermore, numerical test for concrete stress-strain relation under uniaxial tension and compression is given. Moreover, the damage process of concrete gravity dam is calculated and analyzed in seismic load. Compared with other damage constitutive models, the proposed model contains only one unknown parameter and the other parameters can be found in the Hsieh-Ting-Chen four-parameter yield function. The same damage evolution law, which is used for tension and compression, is good for determining stress-strain constitutive and damage characteristics in complex stress state. This coupled damage constitutive models can be applied in analyzing damage of concrete gravity dam and arch dam.
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Received: 04 August 2012
Published: 03 April 2013
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