煤矿安全2018，Vol.49Issue(1)：80-84,5.DOI:10.13347/j.cnki.mkaq.2018.01.021
不同截面形状钢管混凝土拱架的截面压弯特性
Compression-bending Characteristics of Cross-sections of Concrete Filled Steel Tubular Arches with Different Cross-section Shapes
摘要
Abstract
At present,the cross section forms of concrete-filled steel tubular arches which utilized in roadway support are mainly circle,square and D shape.To master the influence laws of different cross-sectional shapes on bearing property of concrete-filled steel tubular arches,compression-bending tests were carried out on specimens with different cross sections using ANSYS,and the compression-bending bearing property of three different cross sections of specimens were statistically analyzed.The results show that:with the increasing of the eccentricity,the axial compression bearing capacity reduced and the bending bearing capacity increased.The circular specimens have the best compression-bending bearing property,whose ultimate moment was 1.3 times,1.65 times and 2.8 times as large as the tested members with square,circular,D shape,and reverse D shape,respectively;and the envelope area of M-N curve was 1.44 times,1.83 times and 2.75 times as large as the above three shapes,respectively.The cross section forms had much more significant effects on the bending capacity than compressive capacity.Compression-bending bearing property of D shape was affected obviously by bias direction,and which was lower in reverse bending.关键词
钢管混凝土/拱架/截面形状/压弯试验/数值模拟Key words
concrete filled steel tube/support arch/cross-section shape/compression-bending test/numerical simulation分类
矿业与冶金引用本文复制引用
张尹,李为腾,杨博,马海曜,杨宁,张玉华..不同截面形状钢管混凝土拱架的截面压弯特性[J].煤矿安全,2018,49(1):80-84,5.基金项目
国家自然科学基金资助项目(51604166) （51604166）
中国博士后科学基金资助项目(2016M590645) （2016M590645）
青岛市博士后应用研究资助项目(2016130) （2016130）
江苏建筑节能与建造技术协同创新中心开放基金资助项目(SJXTQ1508) （SJXTQ1508）
