钢管混凝土叠合柱轴压承载力计算方法对比分析  

Comparative Analysis of Calculation Methods for Axial Compression Capacity of Steel Tube-Reinforced Concrete Column

作　　者：车文鹏 陈建伟 郭建明 冯博学 王帝卿 CHE Wenpeng;CHEN Jianwei;GUO Jianming;FENG Boxue;WANG Diqing(College of Civil and Architectural Engineering,North China University of Science and Technology,Tangshan Hebei 063210,China;Hebei Jike Engineering Project Management Co.,Ltd,Shijiazhuang Hebei 050021,China)

机构地区：[1]华北理工大学建筑工程学院,河北唐山063210 [2]河北冀科工程项目管理有限公司,河北石家庄050227

出　　处：《华北理工大学学报(自然科学版)》2025年第2期74-84,104,共12页Journal of North China University of Science and Technology:Natural Science Edition

基　　金：国家自然科学基金项目(51678236):装配式预应力叠合平板-内置钢管混凝土异形柱结构抗震机理与设计方法研究;河北省自然科学基金项目(E2020209056):双套筒灌浆连接钢管混凝土叠合柱受压性能研究。

摘　　要：基于43个叠合柱轴压试验数据,对比分析已有规范和文献中6种叠合柱轴压承载力计算方法的适用性,并采用数值模拟分析套箍系数、钢管内混凝土强度、钢管外混凝土强度、纵筋配筋率等参数对各计算方法的影响。结果表明,6种轴压承载力计算方法与计算结果均小于试验结果,且计算结果与试验结果吻合度受各参数影响较大,其中套箍系数小于3.0与纵筋配筋率介于1.5%~3.5%范围内时理论计算结果更接近试验结果。叠合柱轴压承载力主要由钢管混凝土和钢管外钢筋混凝土提供,两部分占比均值分别为34.5%和65.5%。根据试验与数值模拟结果,采用回归分析提出适用不同套箍系数的叠合柱轴压承载力计算方法,计算结果与试验结果吻合良好,为叠合柱轴压承载力验算与优化设计提供理论依据。Based on the axial compression experimental data of 43 steel tube-reinforced concrete columns,The applicability of six calculation methods for axial compression capacity of column in existing codes and literatures were compared and analyzed.Numerical simulation was used to analyze the influence of confinement coefficient,concrete strength inside steel tube,concrete strength outside steel tube,longitudinal reinforcement ratio on the calculation methods.The results show that,the calculation results of the six methods are all smaller than the experimental results.And the consistency between the calculation results and the experimental results is greatly affected by each parameter.When the confinement coefficient is less than 3.0 and the longitudinal reinforcement ratio is 1.5%~3.5%,the theoretical calculation results are closer to the experimental results.The axial compression capacity of the steel tube-reinforced concrete column is mainly provided by the concrete filled steel tube and the reinforced concrete outside the steel tube.The average proportions of the two parts were 34.5%and 65.5%,respectively.According to the experimental and numerical simulation results.The calculation method of axial compression capacity of steel tube-reinforced concrete columns with different confinement coefficients is presented by regression analysis.The calculation results are in good agreement with the experimental results,which provides a theoretical basis for the calculation and optimization design of axial compression capacity of steel tube-reinforced concrete column.

关 键 词：钢管混凝土叠合柱 轴压承载力 计算方法 回归分析 

分 类 号：TU398.7[建筑科学—结构工程]