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（1 天津大學(xué)建筑工程學(xué)院， 天津 300072； 2 天津城建大學(xué)土木工程學(xué)院， 天津 300384；

3 天津市軟土特性與工程環(huán)境重點(diǎn)實(shí)驗(yàn)室， 天津 300384）

［摘要］為了進(jìn)一步研究方鋼管混凝土柱-H型鋼梁全螺栓隔板貫通式節(jié)點(diǎn)的力學(xué)性能及其在地震作用下的滯回特性，對(duì)4個(gè)足尺的節(jié)點(diǎn)試件進(jìn)行了低周往復(fù)荷載試驗(yàn)。通過(guò)對(duì)試驗(yàn)數(shù)據(jù)的分析與擬合，提出了方鋼管混凝土柱-H型鋼梁全螺栓隔板貫通式節(jié)點(diǎn)三折線骨架模型及試件的剛度退化規(guī)律，確定了該節(jié)點(diǎn)的彎矩-曲率滯回模型，最后利用試驗(yàn)數(shù)據(jù)對(duì)該模型進(jìn)行驗(yàn)證。結(jié)果表明，該滯回模型具有計(jì)算公式簡(jiǎn)單、易于掌握、計(jì)算精度較高等優(yōu)點(diǎn)，能夠充分反映該節(jié)點(diǎn)的承載力變化、剛度退化和滑移變形，此外該模型對(duì)研究變量進(jìn)行了無(wú)量綱化處理，避免了數(shù)量級(jí)帶來(lái)的麻煩，便于實(shí)際應(yīng)用。

［關(guān)鍵詞］方鋼管混凝土柱-H型鋼梁節(jié)點(diǎn)； 滯回模型； 骨架曲線； 剛度退化

中圖分類號(hào)：TU398+9文獻(xiàn)標(biāo)識(shí)碼：A文章編號(hào)：1002-848X(2015)11-0051-04

Research on hysteretic model of moment-curvature for  all-bolts and

clapboard-through

joint connecting concrete-filled square steel tubular column and H-shaped  steel beam

Li Zilin1,2,3, Ding Hongyi1, Zhang Cong2,3

(1 College of Civil Engineering， Tianjin University, Tianjin 300072, China;

2 College of Civil Engineering of Tianjin Chengjian University, Tianjin 300384, China;

3 Tianjin Key Laboratory of Soft Soil Characteristics and Engineering Environment, Tianjin 300384, China)

Abstract:In order to further study the mechanical properties and hysteresis characteristics under the seismic load of all-bolts and clapboard-through joint connecting

 concrete-filled square steel tubular column and H-shaped steel beam, the low cyclic loading test on  four full-scale joint specimens  was carried out. By analyzing and fitting the test data, a tri-linear skeleton curve model and the stiffness degradation rule of the hysteretic curves of the joint were proposed. The bending moment-curvature hysteretic model of the joint was determined and the model was verified by test data. Results show that the model has better calculation formula which is simple, higher accuracy and easier to master. The model can fully reflect the bearing capacity of the hysteresis curve, stiffness degradation, slip deformation. In addition, the coordinate of the model is dimensionless, which can rule out some troubles such as magnitude orders and make it easy to apply.

Keywords:joint connecting concrete-filled square steel tubular column and H-shaped steel beam; hysteretic model; skeleton curve; stiffness degradation

*天津市自然科學(xué)基金項(xiàng)目（13JCYBJC19600）。

作者簡(jiǎn)介：李自林，碩士，教授，Email:hebeigaomuying@163.com。

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