Experimental study on mechanical behavior of high performance concrete under multi-axial compressive stress  

作　　者：ZHOU Jia Jia PAN Jin Long LEUNG Christopher Kin Ying LI Zong Jin 

机构地区：[1]Key Laboratory of Concrete and Prestressed Concrete Structures of Ministry of Education, Southeast University [2]Department of Civil and Environmental Engineering, Hong Kong University of Science and Technology

出　　处：《Science China(Technological Sciences)》2014年第12期2514-2522,共9页中国科学（技术科学英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.51278118);the National Basic Research Program of China("973"Project)(Grant No.2009CB623200);the Priority Academic Program Development of Jiangsu Higher Education Institutions

摘　　要：Experimental investigation was conducted to characterize the responses of high performance concrete(HPC) subjected to multiaxial compressive stresses. The HPC specimens were prepared with three different mix proportions, which corresponds to three different uniaxial compressive strengths. The cubic specimens with size of 100 mm for each edge were tested with servo-hydraulic actuators at different stress ratios. The principal stresses and strains of the specimens were recorded, and the failure of the cubic specimens under various stress states was examined. The experimental results indicated that the stress states and stress ratios had significant influence on the strength and deformation of HPC under biaxial and triaxial compression, especially under triaxial compression. Failure criteria were proposed for the HPC specimens under biaxial and triaxial compressive loading. The test results provided a valuable reference for obtaining multi-axial constitutive law for HPC.

关 键 词：high performance concrete （HPC） biaxial compressive stress triaxial compressive stress failure criterion stress-straincurve 

分 类 号：TU528[建筑科学—建筑技术科学]