Experimental investigation on strength and deformation of plain high-strength concrete under multiaxial stress state
HE Zhen-jun, SONG Yu-pu
State Key Laboratory of Coastal and Offshore Engineering,Dalian University of Technology,Dalian 116024,China
Abstract:
To investigate the strength and deformation behavior of plain high-strength concrete (HSC) under multiaxial stress states,a large static-dynamic true triaxial machine was employed,and multiaxial tests were performed on 100 mm×100 mm×100 mm cubes concrete specimens.Friction-reducing pads were three-layer plastic membranes with glycerine in-between for the compressive loading plane.The tensile loading plane of concrete samples was processed by attrition machine,and then the samples were glued up with the loading plate with structural glue.Failure modes of specimens were described.The principal static compressive strengths,strains at the peak stress and stress-strain curves were measured,and the influence of stress ratios on them was analyzed as well.Experimental results show that the ratio of the compressive strength σ3f over the uniaxial compressive strength fc depends on brittleness-stiffness of concrete besides stress state and stress ratios.The formula of Kupfer-Gerstle’s and Ottosen’s failure criterion for plain HSC under biaxial compression and multiaxial stress state is proposed respectively.
Key words: high-strength concrete (HSC) stress ratios multiaxial strength mechanical properties stress-strain relationship
DOI：10.11916/j.issn.1005-9113.2009.05.004
Clc Number:TU528.01
Fund:
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Experimental investigation on strength and deformation of plain high-strength concrete under multiax
本站小编 哈尔滨工业大学/2019-10-23
相关话题/Experimental investigation strength and deformation
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