防灾减灾工程学报2012，Vol.32Issue(2)：248-252,5.
不同温度及不同加热时间作用后混凝土力学性能试验研究
Experimental Study on Mechanical Properties of Concrete after Different Temperature and Different Heating Time
摘要
Abstract
The experimental studies on the mechanical properties of concrete under action of different temperatures and different heating time were conducted by hydraulic servo testing system. The influence of the different temperatures, different heating time on compressive strength, elastic modulus, stress-strain relation of concrete was analyzed. The test results show that the mechanical properties of concrete under action of high temperature deteriorate with the rise of temperature, and the compressive strength and elastic modulus decrease with the rise of heating temperature and the extension of heating time, while the peak strain increases gradually. And the regularity and mechanism of change in compressive strength, elastic modulus, stress-strain relation of concrete affected by different temperature and different heating time were analyzed in this paper. And regression formulas of the compressive strength and elastic modulus changes with different temperature and different heating time were obtained. The regression curve and test curve were compared, the results show that the regression curve can be well used to simulate test curve.关键词
高温/抗压强度/弹性模量/应力-应变关系Key words
high temperature/ compressive strength/ elastic modulus/ stress-strain relation分类
建筑与水利引用本文复制引用
邵伟,陈有亮,周有成..不同温度及不同加热时间作用后混凝土力学性能试验研究[J].防灾减灾工程学报,2012,32(2):248-252,5.基金项目
上海市研究生创新基金项目(JWCXSL1002)、国家自然科学基金项目(10872133)、上海市浦江人才计划项目(09PJ1407700)资助 （JWCXSL1002）
