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Mechanical Properties of Steel Square Tube Columns with Standard Flange Connections
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摘要: 对标准化法兰连接方钢管柱，进行了单调和往复循环加载试验及数值分析，研究其力学性能。同时对不同连接强度设计下的方钢管柱，进行了约束刚度、破坏模式、承载能力、滞回性能和刚度退化等研究。结果表明：标准化节点中的法兰连接强度可显著影响方钢管柱的力学性能，可通过改变强度设计倍数来调节法兰连接对柱的约束作用；较低的连接强度（设计倍数0.25~0.85）使法兰对柱的约束作用表现为半刚接，且试件很快失去抗弯能力，试件承载能力基本与强度设计倍数呈线性正相关；法兰连接强度较大时（设计倍数1~1.6），法兰对柱的约束作用基本表现为刚接，可充分发挥钢管柱本身的抗弯性能，且试件承载力基本保持不变；随法兰连接强度的增加，试件循环刚度退化程度呈现减小趋势。Abstract: Experiments under monotonic and cyclic loading conditions， along with simulations， were conducted to investigate the mechanical properties of steel square tube columns with standard flange connections. The constraint stiffness， failure mode， bearing capacity， hysteretic performance， and stiffness degradation of the steel square tube columns under different design strengths were studied. The results showed that the design strength of the flange connection significantly affected the mechanical properties of the steel square tube column. The constraint effect of the flange connection on the column could be adjusted by changing the design strength multiplier of the flange connection. When the connection strength multiplier was small （0.25-0.85）， the flange’s constraint effect on the column behaved as a semi-rigid connection. Under such connection conditions， the column rapidly lost its bearing capacity. The bearing capacity of the specimen was linearly and positively correlated with the with design strength multiplier of the connection in this range. When the connection strength multiplier was large （1-1.6）， the flange’s constraint effect on the column was that of a rigid connection， which allowed full utilization of the bending performance of the square tube column. In this case， the bearing capacity of the specimen remained almost unchanged with an increase in the connection strength parameter. As the flange connection strength increased， the cyclic stiffness degradation of the specimen showed a decreasing trend.
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[1] 张爱林，张艳霞. 工业化装配式高层钢结构新体系关键问题研究和展望[J]. 北京建筑大学学报，2016，32（3）:21-28. [2] 张经纬，王燕，臧晓光. 装配式钢结构方钢管柱与梁连接节点研究进展[J]. 钢结构（中英文），2019，34（8）:1-9. [3] CHEN C C，LIN C C，TSAI C L. Evaluation of reinforced connections between steel beams and box columns[J]. Engineering Structures，2004，26（13）:1889-1904． [4] 范俊伟，杨璐，王元清，等. 方钢管柱可拆卸螺栓拼接节点轴向力学性能研究[J]. 建筑结构学报，2022，43（10）:307-319. [5] WILLIBALD S，PACKER J A，PUTHLI R S. Experimental study of bolted HSS flange-plate connections in axial tension[J]. Journal of Structural Engineering，2002，128（3）:328-336. [6] 夏军武，祝华权，张志雄，等． 方钢管柱-H形钢梁拼接外套筒式中节点静力性能研究[J]. 建筑结构学报，2018，39（7）:104-114. [7] 杨松森，王燕，马强强. 装配式外套筒-加强式外伸端板组件梁柱连接节点抗震性能试验研究[J]. 土木工程学报，2017，50（11）:76-86. [8] RAFAELA S，OYA M，BRENT R. Experimental investigations of vertical post-tensioned connection for modular steel structures[J]. Engineering Structures，2018，175:776-789. [9] LIU X C，CUI F Y，JIANG Z Q，et al. Tension-bend-shear capacity of bolted-flange connection for square steel tube column[J]. Engineering Structures，2019，201，109798. [10] LIU X C，HE X N，WANG H X，et al. Compression-bend-shearing performance of column-to-column bolted-flange connections in prefabricated multi-high-rise steel structures[J]. Engineering Structures，2018，160:439-460. [11] 张爱林，王杰，张艳霞，等. 箱形柱芯筒式双法兰刚性连接节点平面框架拟静力试验研究[J]. 工程力学，2021，38（9）:146-160. [12] 张艳霞，金博文，黄哲文，等. 装配式钢结构箱形柱塞焊-芯筒式法兰连接性能试验研究[J]. 工程力学，2022，39（2）:110-122. [13] 中华人民共和国住房和城乡建设部. 钢结构高强度螺栓连接技术规程:JGJ 82—2011[S]. 北京:中国建筑工业出版社，2011. [14] 王燕，李华军，厉见芬. 半刚性梁柱节点连接的初始刚度和结构内力分析[J]. 工程力学，2003，20（6）:65-69. -
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