首页|期刊导航|哈尔滨工业大学学报（英文版）|Experimental study on biaxial mechanical behavior of concrete suffered high temperature and constitutive model
哈尔滨工业大学学报（英文版）2008，Vol.15Issue(5)：679-685,7.
Experimental study on biaxial mechanical behavior of concrete suffered high temperature and constitutive model
Experimental study on biaxial mechanical behavior of concrete suffered high temperature and constitutive model
摘要
Abstract
Biaxial compression tests on plain concrete suffered high temperature ranging from 200℃to 600 ℃ were carried out using the large-scale dynamic-static tri-axial concrete test system at the State Key Laboratory of Coastal and Offshore Engineering with designated stress ratios of 0,0.25,0.5,0.75 and 1,respectively.The measured strength and strain were reported and the changes in both biaxiai compressive failure envelopes and strains at peak stresses were analyzed.The regressive equation of initial elastic modulus in the biggest principal compressive stress direction was derived from test results.With the published results from previous biaxial tension-compression experiments,a three-parameter failure criterion has been proposed.A biaxial nonlinear elastic incremental constitutive model was developed for the compressive slress directions by using the equivalent uniaxial strain values deduced from test results.Analytical results obtained from the proposed biaxial constitutive model achieve good agreement with the experimental results.关键词
high temperature/biaxial compression/initial elastic modulus/failure envelope/constitutive modelKey words
high temperature/biaxial compression/initial elastic modulus/failure envelope/constitutive model分类
建筑与水利引用本文复制引用
ZHANG Zhong,SONG Yu-pu,QIN Li-kun..Experimental study on biaxial mechanical behavior of concrete suffered high temperature and constitutive model[J].哈尔滨工业大学学报（英文版）,2008,15(5):679-685,7.基金项目
Sponsored by the Science Foundation of Educational Department of Liaoning Province(Grant No.2023901023). （Grant No.2023901023）
