东南大学学报（自然科学版）Issue(1)：188-193,6.DOI:10.3969/j.issn.1001-0505.2014.01.034
冻融循环作用后钢筋混凝土柱的偏心受压性能
Eccentric compressive behaviors of RC columns after freeze-thaw cycles
摘要
Abstract
To investigate the eccentric compressive behaviors of reinforced concrete (RC)columns after freeze-thaw cycles,compressive strength tests of concrete cubes after 0,75,100,125,150 freeze-thaw cycles were carried out.Then,30 RC columns were fabricated,and the corresponding static eccentric compressive experiments after 0,75,100,125,150 freeze-thaw cycles were carried out.The relationships between the relative compressive strength of concrete,mass loss rate,relative dynamic elastic modulus and the number of freeze-thaw cycles were analyzed,respectively.The in-fluences of the number of freeze-thaw cycles and the eccentric distance of axial force on the compres-sive behaviors of RC columns were studied.The results show that with the increase of the number of freeze-thaw cycles,both the cracking load and the ultimate load of RC columns decrease while the deflection increases gradually.Moreover,large eccentric compression failures of some specimens turn into small eccentric compression failure.The current concrete structure design code about the ul-timate load is still suitable for RC columns after freeze-thaw cycles.关键词
冻融循环/钢筋混凝土柱/偏心受压/承载力Key words
freeze-thaw cycle/reinforced concrete columns/eccentric compression/bearing capacity分类
建筑与水利引用本文复制引用
曹大富,马钊,葛文杰,袁沈峰,张政..冻融循环作用后钢筋混凝土柱的偏心受压性能[J].东南大学学报（自然科学版）,2014,(1):188-193,6.基金项目
国家自然科学基金资助项目（50978224，51278445，51308490）、住房和城乡建设部科学技术计划资助项目（2013-K4-17）、江苏省自然科学基金资助项目（BK20130450）、江苏省高校自然科学基金资助项目（13KJB560015）、扬州市科技计划资助项目（2012149）． （）
