防灾减灾工程学报2012，Vol.32Issue(1)：71-76,6.
高温后钢管再生混凝土短柱的理论分析与试验研究
Test and Analysis of Recycled Aggregate Concretes Filled Steel Tube Stub Columns after Subjected to High Temperatures
摘要
Abstract
Firstly, test of axially loaded recycled aggregate concrete filled steel tube stub columns after high temperatures was carried out. Based on the analysis of the test results, the stress-strain model of core recycled aggregate concrete (RAC) after high temperatures was suggested, and the effects of the recycled coarse aggregate (RCA) replacement ratio and the maximum suffered temperature were considered in the model. Secondly, the load-deformation relation of RAC filled steel tube stub columns after high temperatures was calculated using the numerical method, and the numerical results agreed well with the experimental results. Finally, based on the theoretical model, the influences of RCA replacement ratio, maximum suffered temperature and confinement factor on the strength index of RAC filled steel tube stub columns after high temperatures were calculated, and the simplified formulae for the strength index of RAC filled steel tube stub columns after high temperatures were proposed. The predicted bearing capacity of RAC filled steel tube stub columns after high temperatures generally agreed well with the test results. The results in this paper may throw light on practical engineering.关键词
钢管再生混凝土/轴压短柱/高温/试验与分析Key words
recycled aggregate concrete filled steel tube/ axially loaded stub column/ high temperature/test and analysis分类
建筑与水利引用本文复制引用
杨有福,侯睿..高温后钢管再生混凝土短柱的理论分析与试验研究[J].防灾减灾工程学报,2012,32(1):71-76,6.基金项目
国家自然科学基金项目(50908034)、辽宁省自然科学基金项目(20092154)资助 （50908034）
