新型钢框架梁柱节点延性性能试验研究
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摘要
根据钢框架强柱弱梁的抗震设计原则 ,按照有效控制梁上塑性铰位置的思路 ,采用在梁腹板进行开孔削弱的节点形式 ,通过开孔位置与大小控制节点处的塑性铰形成位置 ,进行了反复荷载历程下的 5组试件破坏试验 ,探讨了梁柱节点的滞回性能、节点破坏模式及其极限承载力 ,并进行对比分析。研究结果表明 ,采用腹板开孔的构造形式 ,可以大大缓解节点处的高三轴应力状态 ,降低连接焊缝发生脆性破坏的可能性 ,改善节点延性性能。
According to antiseismic design principle of steel frame——st rong column weak beam and controll ing effectively the position of pl astic hinge of beam,the node form that is weakened by a hole on web i s adopted and the position of plas tic hinge is controlled by the pos ition and size of the hole.At the same time,tests of 5 sets specimen s under cyclic loading are made un til the specimens are destroyed,hy steretic behavior of connection,de struction pattern and loading capa city of connection are discussed a nd contrast analysis is made.Struc tural form that a hole is made on the web can alleviate the triaxial stress state close to connection z one,which improves the ductility p erformance of the node to a great extent.
According to antiseismic design principle of steel frame——st rong column weak beam and controll ing effectively the position of pl astic hinge of beam,the node form that is weakened by a hole on web i s adopted and the position of plas tic hinge is controlled by the pos ition and size of the hole.At the same time,tests of 5 sets specimen s under cyclic loading are made un til the specimens are destroyed,hy steretic behavior of connection,de struction pattern and loading capa city of connection are discussed a nd contrast analysis is made.Struc tural form that a hole is made on the web can alleviate the triaxial stress state close to connection z one,which improves the ductility p erformance of the node to a great extent.
引文
1 UangChiaming,FanChaochin.CyclicStabilityCriteriaforSteelMomentConnectionswithReducedBeamSection.JournalofStruc turalEngineering,2001,127(9):1021～1027
2 赵大伟,石永久.钢结构节点脆性破坏分析.工程力学,1999(增刊):32～37
3 ShengJinchen,TsaoYC ,ChaoYC .EnhancementofDuctilityofExistingSeismicSteelMomentConnections.JournalofStructuralEngineering,2001,127(5):538～545
4 王秀丽,梁亚雄,等.反复荷载作用下多层轻钢框架梁柱节点抗震性能的实验研究.工业建筑,2003(增刊):725～730
5 石永久,李兆凡,陈宏,等.高层钢框架新型梁柱节点抗震性能试验研究.建筑结构学报,2002,23(3):2～7
6 姚国春,霍立兴,张玉凤,等.焊接钢结构梁柱节点地震下的断裂行为研究.钢结构,2000,15(50):25～27
7 陈宏,石永久,王元青,等.钢框架梁柱节点受力性能非线性分析.工业建筑,2001,31(5)
8 DanDubina,AdrianCiutina,AurelStratan.CyclicTestsofDouble-SidedBeam-to-ColumnJoints.JournalofStructuralEngineer ing,2000,127(2):129～136
9 宋振森,顾强,郭兵.刚性钢框架梁柱连接试验研究.建筑结构学报,2001,22(1):53～56
10王秀丽,沈世钊,朱彦鹏.轻型钢管拱型屋盖结构体系的优化设计.建筑结构,2002,32(7):60～62
2 赵大伟,石永久.钢结构节点脆性破坏分析.工程力学,1999(增刊):32～37
3 ShengJinchen,TsaoYC ,ChaoYC .EnhancementofDuctilityofExistingSeismicSteelMomentConnections.JournalofStructuralEngineering,2001,127(5):538～545
4 王秀丽,梁亚雄,等.反复荷载作用下多层轻钢框架梁柱节点抗震性能的实验研究.工业建筑,2003(增刊):725～730
5 石永久,李兆凡,陈宏,等.高层钢框架新型梁柱节点抗震性能试验研究.建筑结构学报,2002,23(3):2～7
6 姚国春,霍立兴,张玉凤,等.焊接钢结构梁柱节点地震下的断裂行为研究.钢结构,2000,15(50):25～27
7 陈宏,石永久,王元青,等.钢框架梁柱节点受力性能非线性分析.工业建筑,2001,31(5)
8 DanDubina,AdrianCiutina,AurelStratan.CyclicTestsofDouble-SidedBeam-to-ColumnJoints.JournalofStructuralEngineer ing,2000,127(2):129～136
9 宋振森,顾强,郭兵.刚性钢框架梁柱连接试验研究.建筑结构学报,2001,22(1):53～56
10王秀丽,沈世钊,朱彦鹏.轻型钢管拱型屋盖结构体系的优化设计.建筑结构,2002,32(7):60～62
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