方钢管混凝土柱-钢梁节点承载力试验研究
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摘要
基于隔板贯通节点在地震作用下的破坏调查结果,提出了一种改善钢梁翼缘与隔板连接处受力性能的新型节点——倒角放坡型隔板贯通节点。对7个十字形节点试件进行了静力拉伸试验,研究了隔板贯通式连接中方钢管混凝土柱与钢梁受拉翼缘的连接性能,分析了钢梁翼缘与隔板连接构造以及浇注孔直径、隔板厚度、钢管的宽厚比等参数对节点局部受拉承载力的影响,并将试验得到的承载力与规程公式计算结果进行了比较。研究结果表明:倒角放坡型隔板贯通节点具有较好的承载力和延性;影响节点承载力的主要因素是隔板的厚度、浇注孔径和钢管的宽厚比,在钢管中填充混凝土有利于提高节点的屈服承载力和刚度;对于填充混凝土的试件,采用公式计算节点承载力偏于保守。
Based on investigations of earthquake damage of diaphragm-through joint,one new-type joint,diaphragm-through joint with fillet and slope at the connecting zone,is proposed to improve connecting behavior of diaphragm with beam flange.Seven cruciform specimens of joint model were tested under static tensile loading to study the behavior of concrete-filled square steel tubular column with steel beam flange.Details of the beam flange with the diaphragm and effects of experimental variables,including diameter of concrete cast hole,diaphragm thickness and width-to-thickness ratio of the tube were observed and the values of load-bearing capability of experiment were compared with that calculated from formula presented in existing specification.The results indicated that diaphragm-through joints with fillet and slope at the connecting zone of diaphragm and beam flange have high load-bearing capacity and good ductility.The main factors that influence the load-bearing capability of joints are diameter of concrete cast hole,diaphragm thickness and the width-to-thickness ratio of the tube,and the yield load-bearing capacity and stiffness can be increased by the concrete filled in the tube.It is also shown that compared with the experimental results,the load-bearing capability calculated from the formula are conservative for the joint models with the tube filled in concrete.
Based on investigations of earthquake damage of diaphragm-through joint,one new-type joint,diaphragm-through joint with fillet and slope at the connecting zone,is proposed to improve connecting behavior of diaphragm with beam flange.Seven cruciform specimens of joint model were tested under static tensile loading to study the behavior of concrete-filled square steel tubular column with steel beam flange.Details of the beam flange with the diaphragm and effects of experimental variables,including diameter of concrete cast hole,diaphragm thickness and width-to-thickness ratio of the tube were observed and the values of load-bearing capability of experiment were compared with that calculated from formula presented in existing specification.The results indicated that diaphragm-through joints with fillet and slope at the connecting zone of diaphragm and beam flange have high load-bearing capacity and good ductility.The main factors that influence the load-bearing capability of joints are diameter of concrete cast hole,diaphragm thickness and the width-to-thickness ratio of the tube,and the yield load-bearing capacity and stiffness can be increased by the concrete filled in the tube.It is also shown that compared with the experimental results,the load-bearing capability calculated from the formula are conservative for the joint models with the tube filled in concrete.
引文
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[5]王来,王铁成,邓芄.方钢管混凝土框架内隔板节点抗震性能的试验研究[J].地震工程与工程振动,2005,25(1):76-80.(Wang Lai,Wang Tiecheng,Deng Peng.Experimental research on seismic performances of jointreinforced with inner ring stiffener of concrete-filled squaretubular frame[J].Journal of Earthquake Engineering andEngineering Vibration,2005,25(1):76-80.(inChinese))
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[7]苗纪奎,陈志华,姜忻良等.方钢管混凝土柱-钢梁节点静力受拉性能研究[J].山东建筑大学学报,2008,23(4):287-292.(Miao Jikui,Chen Zhihua,Jiang Xinliang,et al.Tensile behavior of connection between concrete-filledsquare steel tubular column and steel beam[J].Journal ofShandong Jianzhu University,2008,23(4):287-292.(inChinese))
[8]CECS 159:2004矩形钢管混凝土结构技术规程[S].(CECS 159:2004 Technical specification for structureswith concrete-filled rectangular steel tubular members[S].(in Chinese))
[9]Nakashima M,Inoue K,Tada M.Classification of damageto steel buildings observed in the 1995 Hyogoken-Nanbuearthquake[J].Engineering Structure,1997,20(4-6):271-281.
[10]Nakashima M,Suita k,Morisako k,et al.Test of weldedbeam-column subassemblies[J].Journal of StructuralEngineering,1998,124(11):1236-1252.
[11]刘占科,苏明周,申林等.钢结构梁端翼缘腋形扩大式刚性梁柱连接试验研究[J].建筑结构学报,2007,28(3):8-14.(LIU Zhanke,SU Mingzhou,SHEN Lin,et al.Experimental study on steel moment resistant connectionswith enlarged beam flanges welded to column[J].Journalof Building Structures,2007,28(3):8-14(in Chinese))
[12]黄南翼,张锡云,张萝香.日本阪神大地震建筑震害分析与加固技术[M].北京:地震出版社,2000.(HuangNanyi,Zhang Xiyun,Zhang Luoxiang.Damage analysis ofJapan Kobe earthquake and reinforcement technology[M].Beijing:Earthquake Press of China,2000.(in Chinese))
[13]日本建築学会.鉄骨工事技術指針-工場製作編[S].東京:日本建築学会,1996.(AIJ.Technicalrecommendations for steel construction for buildings,Part 1guide to steel-rib fabrications[S].Tokyo:ArchitecturalInstitute of Japan,1996.(in Japanese))
[14]杨强跃,郑悦.钢框架梁柱节点连接方式的介绍与分析[J].建筑结构,2004,34(6):44-48.(Yang Qiangyue,Zheng Yue.Introduction and analysis of the steel framebeam-to-column connection[J].Building Structure,2004,34(6):44-48.(in Chinese))
[15]Matsui C.Strength and behavior of frames with concretefilled square steel tubular columns under earthquake loading[C]//The International Specialty Conference on ConcreteFilled Steel Tubular Structure.Harbin,China:HarbinArchitecture and Civil Engineering Institute,1985.
[16]日本建築学会.鉄骨鉄筋コンクリ?ト構造計算規準[S].東京:日本建築学会,2001.(AIJ.Standard forstructural calculation of steel reinforced concrete structures[S].Tokyo:Architectural Institute of Japan,2001.(inJapanese))
[2]周天华,何保康,陈国津等.方钢管混凝土柱与钢梁框架节点的抗震性能试验研究[J].建筑结构学报,2004,25(1):9-16.(ZHOU Tianhua,HE Baokang,CHENGuojin,et al.Experimental studies on seismic behavior ofconcrete-filled steel square tubular column and steel beamjoints under cyclic loading[J].Journal of BuildingStructures,2004,25(1):9-16.(in Chinese))
[3]周天华,聂少锋,卢林枫等.带内隔板的方钢管混凝土柱-钢梁节点设计研究[J].建筑结构学报,2005,26(5):23-29.(ZHOU Tianhua,NIE Shaofeng,LULinfeng,et al.Design of concrete-filled steel square tubular column andsteel beam joint with internal diaphragms[J].Journal ofBuilding Structures,2005,26(5):23-29.(in Chinese))
[4]周学军,曲慧.方钢管混凝土框架梁柱节点在低周往复荷载作用下的抗震性能研究[J].土木工程学报,2006,39(1):38-42.(Zhou Xuejun,Qu Hui.Seismic resistanceof bolt-weld joint and all-weld joint of concrete filled squaresteel tube and steel beam under cyclic load[J].China CivilEngineering Journal,2006,39(1):38-42.(in Chinese))
[5]王来,王铁成,邓芄.方钢管混凝土框架内隔板节点抗震性能的试验研究[J].地震工程与工程振动,2005,25(1):76-80.(Wang Lai,Wang Tiecheng,Deng Peng.Experimental research on seismic performances of jointreinforced with inner ring stiffener of concrete-filled squaretubular frame[J].Journal of Earthquake Engineering andEngineering Vibration,2005,25(1):76-80.(inChinese))
[6]李黎明,陈志华,李宁.隔板贯通式梁柱节点抗震性能试验研究[J].地震工程与工程振动,2007,27(1):46-53.(Li Liming,Chen Zhihua,Li Ning.Experimental studyon seismic capability of diaphragm-through style beam-column joint[J].Journal of Earthquake Engineering andEngineering Vibration,2007,27(1):46-53.(inChinese))
[7]苗纪奎,陈志华,姜忻良等.方钢管混凝土柱-钢梁节点静力受拉性能研究[J].山东建筑大学学报,2008,23(4):287-292.(Miao Jikui,Chen Zhihua,Jiang Xinliang,et al.Tensile behavior of connection between concrete-filledsquare steel tubular column and steel beam[J].Journal ofShandong Jianzhu University,2008,23(4):287-292.(inChinese))
[8]CECS 159:2004矩形钢管混凝土结构技术规程[S].(CECS 159:2004 Technical specification for structureswith concrete-filled rectangular steel tubular members[S].(in Chinese))
[9]Nakashima M,Inoue K,Tada M.Classification of damageto steel buildings observed in the 1995 Hyogoken-Nanbuearthquake[J].Engineering Structure,1997,20(4-6):271-281.
[10]Nakashima M,Suita k,Morisako k,et al.Test of weldedbeam-column subassemblies[J].Journal of StructuralEngineering,1998,124(11):1236-1252.
[11]刘占科,苏明周,申林等.钢结构梁端翼缘腋形扩大式刚性梁柱连接试验研究[J].建筑结构学报,2007,28(3):8-14.(LIU Zhanke,SU Mingzhou,SHEN Lin,et al.Experimental study on steel moment resistant connectionswith enlarged beam flanges welded to column[J].Journalof Building Structures,2007,28(3):8-14(in Chinese))
[12]黄南翼,张锡云,张萝香.日本阪神大地震建筑震害分析与加固技术[M].北京:地震出版社,2000.(HuangNanyi,Zhang Xiyun,Zhang Luoxiang.Damage analysis ofJapan Kobe earthquake and reinforcement technology[M].Beijing:Earthquake Press of China,2000.(in Chinese))
[13]日本建築学会.鉄骨工事技術指針-工場製作編[S].東京:日本建築学会,1996.(AIJ.Technicalrecommendations for steel construction for buildings,Part 1guide to steel-rib fabrications[S].Tokyo:ArchitecturalInstitute of Japan,1996.(in Japanese))
[14]杨强跃,郑悦.钢框架梁柱节点连接方式的介绍与分析[J].建筑结构,2004,34(6):44-48.(Yang Qiangyue,Zheng Yue.Introduction and analysis of the steel framebeam-to-column connection[J].Building Structure,2004,34(6):44-48.(in Chinese))
[15]Matsui C.Strength and behavior of frames with concretefilled square steel tubular columns under earthquake loading[C]//The International Specialty Conference on ConcreteFilled Steel Tubular Structure.Harbin,China:HarbinArchitecture and Civil Engineering Institute,1985.
[16]日本建築学会.鉄骨鉄筋コンクリ?ト構造計算規準[S].東京:日本建築学会,2001.(AIJ.Standard forstructural calculation of steel reinforced concrete structures[S].Tokyo:Architectural Institute of Japan,2001.(inJapanese))
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