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沈金生,彭宁宁,安新正,聂千朋,李世悦,郭子毅.钢管再生混凝土短柱承载性能有限元分析[J].河北工程大学自然版,2021,38(4):1-6,74
钢管再生混凝土短柱承载性能有限元分析
Finite Element Analysis of Mechanical Properties of Recycled Concrete Filled Square Steel Tubular Stub Columns
投稿时间:2021-07-06  
DOI:10.3969/j.issn.1673-9469.2021.04.001
中文关键词:  钢管再生混凝土短柱  含砖粒再生混凝土  承载性能  有限元分析
英文关键词:recycled concrete filled steel tubular stub columns  recycled concrete with brick particles  bearing capacity  finite element analysis
基金项目:国家自然科学基金资助项目(51378169)
作者单位
沈金生 天津大学 建筑工程学院, 天津 300000
河北工程大学 土木工程学院, 河北 邯郸 056038 
彭宁宁 河北工程大学 土木工程学院, 河北 邯郸 056038 
安新正 河北工程大学 土木工程学院, 河北 邯郸 056038 
聂千朋 河北工程大学 土木工程学院, 河北 邯郸 056038 
李世悦 河北工程大学 土木工程学院, 河北 邯郸 056038 
郭子毅 河北工程大学 土木工程学院, 河北 邯郸 056038 
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中文摘要:
      为了分析钢管再生混凝土短柱承载性能的影响因素,试验设计了3个不同偏心距的方套方中空夹层钢管再生混凝土短柱进行单调加载,用于验证所建立有限元模型的正确性;并利用得到验证的有限元模型设计了三种截面类型(方套方中空截面、方套圆中空截面、方实心截面)共7个钢管再生混凝土短柱试件,并以偏心距及外钢管壁厚为变化参数,运用ABAQUS建立有限元模型进行静力加载分析。得到了不同偏心距及外钢管壁厚下钢管再生混凝土柱的荷载-轴向位移曲线,分析了偏心距及外钢管壁厚对钢管再生混凝土短柱承载性能的影响。分析结果表明:三种类型中方钢管中空夹层再生混凝土短柱随偏心距减小或外钢管壁厚的增加,其承载性能均有所提高;三种截面类型中,方套方中空夹层试件初期刚度最大,极限承载力最高。
英文摘要:
      In order to analyze the factors affecting the bearing performance of recycled concrete-filled steel tubular short columns, three square hollow sandwich recycled concrete-filled steel tubular short columns with different eccentricities were designed for monotonic loading to verify the applicability of the established finite element model; Using the verified finite element model, seven specimens of recycled concrete-filled steel tubular short columns with three section types (square sleeve, square hollow section, square sleeve circular hollow section and square solid section) are designed.Taking eccentricity and outer steel tube wall thickness as variable parameters, the finite element analysis model was established by using ABAQUS finite element software for static loading analysis. The load axial displacement curves of recycled concrete filled steel tubular columns with different eccentricities and external steel tube wall thickness were obtained, and the influence of eccentricities and external steel tube wall thickness on the bearing capacity of recycled concrete filled steel tubular short columns was analyzed. The results show that the bearing capacity of three types of recycled concrete short columns with hollow intercalation of square steel tube increases with the decrease of eccentricity or the increase of wall thickness of outer steel tube; Among the three cross-section types, the square hollow sandwich specimen has the highest initial stiffness and ultimate bearing capacity.
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