【作者】 武斌； 谭卓英； 张岩； 李繁；

【Author】 WU Bin;TAN Zhuoying;ZHANG Yan;LI Fan;School of Civil and Resource Engineering,University of Science and Technology Beijing;Department of Construction Engineering,Liaoning Provincial College of Communications;Beijing Key Laboratory of Urban Underground Space Engineering,School of Civil and Resource Engineering,University of Science and Technology Beijing;Hannoer Greenland Venue Management Co.,Ltd.;

【机构】 北京科技大学土木与资源工程学院； 辽宁省交通高等专科学校建筑工程系； 城市地下空间工程北京市重点实验室土木与资源工程学院北京科技大学； 绿地汉诺威会展有限公司；

【摘要】 为了获得圆钢管混凝土极限黏结强度的统一计算公式,对大量的圆钢管混凝土极限黏结强度的试验资料进行了整理分析,结果表明:极限黏结强度随着长径比、套箍系数的提高而提高;随着径厚比的提高而降低;一般情况下,随着混凝土强度的提高而提高。目前的圆钢管混凝土极限黏结强度的计算公式的理论计算值与试验值吻合较差。基于统计分析的方法,以混凝土强度和径厚比为主要参数提出了圆钢管混凝土极限黏结强度的统一计算模型,计算结果与试验结果吻合较好,证明了统一计算公式的有效性,为圆钢管混凝土的统一设计提供参考。更多还原

【Abstract】 In order to obtain a unified calculation formula of the ultimate bond strength of concrete filled circular steel tubes,abundant literatures on the ultimate bond strength tests of concrete filled circular steel tubes were studied.The results showed that the ultimate bond strength increased with the increase of length-diameter ratio and confining coefficient,and decreased with the increase of the width-thickness ratio.Generally,the ultimate bond strength increased with the increase of the concrete strength.Currently,the theoretical calculation results of the ultimate bond strength of concrete filled circular steel tubes were inconsistent with the experimental results.Based on the method of statistical analysis,the unified calculation model of the ultimate bond strength of concrete filled circular steel tubes was proposed with concrete strength and diameter-thickness ratio as the main parameters.The calculation results agreed with test results,which proved the validity of unified calculation formula.This work will provide a reference for the unified design of concrete filled circular steel tubes.更多还原