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	Micromechanics model for static and dynamic strength of concrete under confinement
	Dan Zheng ; Qingbin Li
	2010-10-12 ; 2010-10-12
关键词	Practical Theoretical or Mathematical Experimental/ compressive strength concrete fracture toughness microcracks stress effects structural engineering/ micromechanics model concrete static strength concrete dynamic strength microcrack propagation pseudoforce method compressive strength factor microfracture toughness concrete rate-dependent property civil engineering concrete structures concrete confinement multiaxial stress state/ E2160 Micromechanics (mechanical engineering) E1710 Engineering materials E3030 Construction industry E2180E Fracture mechanics and hardness (mechanical engineering) E2180B Plasticity (mechanical engineering) E2110A General shapes and structures
中文摘要	The process of propagation, kinking of micro-cracks in concrete and the interaction among cracks as well as the induced failure were analyzed using the model that describes the wing type crack from the point of view of micromechanics. The pseudo-force method is applied to calculate the compressive strength factor of kinky propagated crack taking into account the effect of interaction among cracks. On the assumption that the micro fracture toughness of concrete does not vary with stain rate, the static and dynamic strength of concrete under different confinements can be calculated. The comparison of calculation result with experimental data indicates that a good agreement is achieved which implies that the model can be used to explain the rate-dependent properties of concrete in multi-axial stress state.
语种	英语
出版者	Springer ; China
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/82015]
专题	清华大学
推荐引用方式 GB/T 7714	Dan Zheng,Qingbin Li. Micromechanics model for static and dynamic strength of concrete under confinement[J],2010, 2010.
APA	Dan Zheng,&Qingbin Li.(2010).Micromechanics model for static and dynamic strength of concrete under confinement..
MLA	Dan Zheng,et al."Micromechanics model for static and dynamic strength of concrete under confinement".(2010).

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