- 摘 要
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榮彬1,2,劉睿1,吳遼1,陳志華1,2,榮成3,苗紀奎4
（1 天津大學建筑工程學院， 天津 300072；
2 天津大學濱海土木工程結(jié)構與安全教育部重點實驗室， 天津 300072；
3 河南榮泰工程管理有限公司， 商丘 476000； 4 山東建筑大學建筑城規(guī)學院， 濟南 250101）
［摘要］結(jié)合低周反復荷載試驗和有限元模擬，考察了T字形和十字形方鋼管柱隔板貫通節(jié)點的抗剪強度。通過對節(jié)點破壞形式、滯回曲線和骨架曲線等結(jié)果的分析，發(fā)現(xiàn)T字形隔板貫通節(jié)點發(fā)生了節(jié)點核心區(qū)剪切破壞，十字形隔板貫通節(jié)點發(fā)生了梁端塑性鉸破壞。依據(jù)《鋼結(jié)構設計規(guī)范》（GB 50017—2003）對隔板貫通節(jié)點核心區(qū)的抗剪強度進行驗算的結(jié)果表明，對于十字形隔板貫通節(jié)點的抗剪強度，規(guī)范公式計算結(jié)果可行；而對于T字形隔板貫通節(jié)點的抗剪強度，規(guī)范公式計算結(jié)果偏于不安全。
［關鍵詞］方鋼管柱； 隔板貫通節(jié)點； 抗剪強度； 低周反復荷載試驗
中圖分類號：TU398文獻標識碼：A文章編號：1002-848X(2016)02-0049-05
Shear strength study on diaphragm-through joint of square steel tubular column
Rong Bin1,2, Liu Rui1, Wu Liao1, Chen Zhihua1,2, Rong Cheng3, Miao Jikui4
(1 School of Civil Engineering, Tianjin University, Tianjin University, Tianjin 300072, China;
2 Key Laboratory of Coast Civil Structure Safety, Ministry of Education, Tianjin 300072, China;
3 Henan Rongtai Engineering Management Co., Ltd., Shangqiu 476000, China;
4 School of Architecture and Urban Planning, Shandong Jianzhu University, Jinan 250101, China)
Abstract:Low-reversed cyclic loading experiment and finite element analysis were carried out to study the shear strength of T-shaped specimen and cruciform specimen of diaphragm-through joint. Base on analyses of failure modes, hysteresis curves and skeleton curves, it can be found that shear failure occurs at panel zone of T-shaped specimen while the failure mode of cruciform specimen is plastic hinge at the beam flange. Shear strength of specimens was calculated according to the Code for design of steel structures (GB 50017—2003). It is proved that shear strength of cruciform specimen of diaphragm-through joint can be designed according to the Code. For Tee-shaped specimen of diaphragm-through joint, the result using the Code is not satisfied.
Keywords:square steel tubular column; diaphragm-through joint; shear strength; low-reversed cyclic loading experiment
*國家自然科學基金項目（51268054，51468061），天津市自然科學基金項目（13JCQNJC07300）。
作者簡介：榮彬，博士，副教授，Email：tjerobin@126.com。
