大骨料混凝土三轴受压动态强度试验研究_宋玉普.pdfVIP

115 Vol.11 No.5 2 0 1 3 1 0 Journal of Water Resources and Architectural Engineering Oct ., 2 013 　 宋玉普, 陈　渊 ( , 116024) 　:, , , 。, ; , 。 , , 。 :;;;; :TU52 　　　　 　:A　　 :1672—1144 (2013)05—00 4—05 Experimental Study on Dynamic Strength of Large Aggregate Concrete under Triaxial Compression SONG Yu-pu, CHEN Yuan (S tate Key Laboratory of Coastal and Off shore E ngineering, Dalian University of Technology , Dalian, L iaoning 116024, China ) Abstract :In order to meet the needs of the seismic analysis and design of hydraulic structures, the dynamic triaxial com- pression tests on the cubic specimens of large aggregate concrete and wet-screened concrete were carried out by using a large hydraulic-serve triaxial test system of Dalian University of Technology.The effects of stress ratio and strain rate on the triaxial compression strength of wet-screened concrete were studied through the tests.The experimental results prove that the triaxial compression strengths of the two kinds of concrete are higher than the uniaxial compression strengths;the triaxial compression strength of wet-screened concrete increases differently along with the different stress ratios and in- creases along with the increase of the strain rates.Basedon the experimental results, the failure criterion forwet-screened concrete is established in an octahedral stress space, which can provide experimental basis for the nonlinear analysis of hydraulic structures. Keywords:large aggregate concrete;wet-screened concrete;triaxial compression;dynamic strength;failure cri- terion , 0