高温后钢管高强混凝土柱的黏结性能  

Bonding Performance of High-Strength Concrete-Filled Steel Tube Columns After High Temperature

作　　者：王兵[1,2] 郁舒敏 刘晓[1,2] 侯东序 崔洧瑄 WANG Bing;YU Shumin;LIU Xiao;HOU Dongxu;CUI Weixuan(School of Civil Engineering,Shenyang University,Shenyang 110044,China;Shenyang Key Laboratory of Intelligent Disaster Prevention and Mitigation of Civil Buildings,Shenyang University,Shenyang 110044,China)

机构地区：[1]沈阳大学建筑工程学院,辽宁沈阳110044 [2]沈阳大学沈阳市民用建筑智慧防灾减灾重点实验室,辽宁沈阳110044

出　　处：《沈阳大学学报（自然科学版）》2024年第1期54-60,共7页Journal of Shenyang University：Natural Science

基　　金：国家自然科学基金资助项目(52078306);辽宁省教育厅基本科研项目(青年项目)(LJKQZ2021165);沈阳市科学技术计划(21-108-9-21)。

摘　　要：为了研究高温后钢管高强混凝土柱的黏结性能,通过有限元软件ABAQUS建立模型,并与已有试验结果进行验证,吻合良好。研究表明:钢管高强混凝土柱的黏结应力随着温度的升高呈现出先增加后减小的趋势;黏结应力随着混凝土强度的增大而增大,随着径厚比的增大而减小;长径比在2.74~7.72的范围内,随着长径比的增加,黏结力逐渐增加;黏结界面破坏的速度随温度的增加而减缓;随着温度的增加耗能因子呈现先增大后减小的趋势。In order to study the bonding performance of high strength concrete filled steel tube after high temperature,a model was established by the finite element software ABAQUS and verified with the test results.The results showed that the bonding stress of high-strength concrete columns increased first and then decreased with the increase of temperature;the bonding stress increased with the increase of concrete strength and decreased with the increase of the diameter-thickness ratio.In the range of L/D ratio of 2.74~7.72,the adhesion gradually increased with the increase of L/D ratio.The rate of failure of the bond interface slowed down with the increase of temperature,and the energy dissipation factor increased first and then decreased with the increase of temperature.

关 键 词：高温 黏结滑移 钢管高强混凝土柱 耗能因子 有限元模拟 

分 类 号：TU398.9[建筑科学—结构工程]