配筋钢管掺沙漠砂混凝土短柱力学性能研究  

MECHANICAL PROPERTIES OF RCFST COMPRESSION SHORT COLUMNS MIXING DESERT SAND

作　　者：沙吾列提·拜开依[1,2] 阿力马斯·叶尔布拉提 古丽迪·努尔特列克 SAWULET·Bekey;ALMAS·Erbolat;GULDEN·Nurtelek(College of Architecture and Engineering,Xinjiang University,Urumqi 830017,China;Xinjiang Key Lab of Building Structure and Earthquake Resistance,Xinjiang University,Urumqi 830017,China;Xinjiang Research Institute of Building Sciences LLC,Urumqi 830054,China)

机构地区：[1]新疆大学建筑工程学院,乌鲁木齐830017 [2]新疆大学新疆建筑结构与抗震重点实验室,乌鲁木齐830017 [3]新疆建筑科学研究院(有限责任公司),乌鲁木齐830054

出　　处：《工程力学》2025年第2期118-126,共9页Engineering Mechanics

基　　金：国家自然科学基金项目(51668059)。

摘　　要：为探明掺沙漠砂混凝土对构件轴压力学性能的影响,以相同含钢率为基础制作了两种强度等级的掺沙漠砂混凝土的钢筋混凝土(RC)、钢管混凝土(CFST)和配筋钢管混凝土(RCFST)短柱试件,为了对比同时制作了相同的普通混凝土短柱试件。对照分析了破坏模式、峰值荷载、力学性能和延性,并利用试验数据验证了RCFST承载力是否等于CFST与纵筋强度的叠加。结果表明:掺有沙漠砂的RC、CFST和RCFST短柱轴压力学性能与相对应的普通混凝土试件相似,沙漠砂的掺入对构件力学性能影响不大;在相同含钢率下CFST与RCFST峰值荷载及延性相接近;现行规范公式可计算掺沙漠砂混凝土的CFST与RCFST轴压承载力,RCFST承载力可用CFST与纵筋强度的叠加承载力来评估。To investigate the effect of desert sand-doped concrete on the mechanical properties of the members in axial compression,stocky column specimens of reinforced concrete(RC),concrete-filled steel tubular(CFST)and reinforced concrete-filled steel tubular(RCFST)with two strength classes of desert sand-doped concrete were fabricated on the basis of the same steel content.The damage mode,peak load,mechanical properties and ductility were compared and analyzed.And the experimental data were used to verify again whether the RCFST bearing capacity is equal to the superposition of CFST and longitudinal reinforcement strength.The results show that:the mechanical properties of RC,CFST and RCFST stocky columns mixed with desert sand are similar to those of ordinary concrete specimens in axial compression,and the incorporation of desert sand has little effect on the mechanical properties of the members;the peak loads and ductility of CFST and RCFST are similar at the same steel content rate;the current code equations can calculate the axial compression load capacity of CFST and RCFST of concrete mixed with desert sand,and the RCFST load capacity;and the superimposed load capacity of CFST and longitudinal reinforcement strength can be evaluated.

关 键 词：掺沙漠砂混凝土 配筋钢管混凝土短柱 相同含钢率 延性 承载力公式 

分 类 号：TU398.9[建筑科学—结构工程]