Numerical simulation on progressive collapse behavior of bolted beam-column joints with through diaphragm
QIN Xi 2，WANG Wei 1,2
1. State Key Laboratory for Disaster Reduction in Civil Engineering, Tongji University, Shanghai 200092, China；
2. Department of Building Engineering, Tongji University, Shanghai 200092, China
Abstract：This paper presents numerical simulation results of bolted I-beam-to-RHS column joints with through diaphragm against progressive collapse. Three types of joints including narrow cover plate joint, wide cover plate joint and wide cover plate equipped with local strengthened bottom flange joint are investigated. The load transfer mechanisms are clarified and the load-carrying capacity is evaluated. The results indicate that moving the initial position of fracture failure beyond the column by increasing the size of cover plate can enhance the carrying capacity of the joints. At the same time, increasing the width of flange and cover plate at connection simultaneously may result in bolt bearing failure, thus delaying the occurrence of cracking in plate, which is conductive to the development of catenary action and makes a big difference in improving the carrying capacity of joints.
秦 希2，王 伟1,2. 隔板贯通式全螺栓节点抗连续性倒塌性能数值模拟分析[J]. 振动与冲击, 2015, 34(10): 68-75.
QIN Xi 2，WANG Wei 1,2. Numerical simulation on progressive collapse behavior of bolted beam-column joints with through diaphragm. JOURNAL OF VIBRATION AND SHOCK, 2015, 34(10): 68-75.
[1] 李玲,王伟,陈以一,等. 结构连续性倒塌工况下的梁柱节点研究现状[C].上海:第二届建筑结构抗倒塌学术交流会, 2012:155-161.
[2] Rölle L U K. Partial-strength and highly ductile steel and composite joints as robustness measure[C]. Proceeding of the Nordic Steel Conference,2009.
[3] Yang B, Tan K H. Different type of steel joint under catenary action part1: experimental test[C]. 6th Conference on Steel and Composite Structures, Budapest, Hungary, European Convention for Constructional Steelwork, 2011.
[4] Yang B, Tan K H. Different types of steel joints under catenary action part 2: numerical simulations[C]. 6th Conference on Steel and Composite Structures, Budapest, Hungary, European Convention for Constructional Steelwork, 2011.
[5] Yang B, Tan K H. Experimental tests of different types of bolted steel beam–column joints under a central-column- removal scenario[J].Engineering Structures,2013,54:112- 130.
[6] Yang B, Tan K H. Robustness of bolted-angle connections against progressive collapse: experimental tests of beam- column joints and development of component-based models [J]. Journal of Structural Engineering, 2013,139(9): 1498- 1514.
[7] Lee C H, Kim S, Lee K. Parallel axial-flexural hinge model for nonlinear dynamic progressive collapse analysis of welded steel moment frames[J]. Journal of Structural Engineering, 2009, 136(2): 165-173.
[8] Main J A, Lew H S, Robert S D, et al. An experimental and computational study of steel moment connections under a column removal scenario [M]. US Department of Commerce, National Institute of Standards and Technology, 2010.
[9] Sadek F, Main J A, Lew H S, et al. Testing and analysis of steel and concrete beam-column assemblies under a column removal scenario[J]. Journal of Structural Engineering, 2011, 137(9): 881-892.
[10] Lew H S, Main J A, Robert S D, et al. Performance of steel moment connections under a column removal scenario. I: experiments[J]. Journal of Structural Engineering,2012, 139(1): 98-107.
[11] Sadek F, El-Tawil S, Lew H S. Robustness of composite floor systems with shear connections: modeling, simulation, and evaluation [J]. Journal of Structural Engineering, 2008, 134(11): 1717-1725.
[12] Li L, Wang W, Chen Y, et al. Experimental investigation of beam-to-tubular column moment connections under column removal scenario[J]. Journal of Constructional Steel Research, 2013, 88: 244-255.
[13] 王伟,李玲,陈以一. 方钢管柱-H形梁栓焊混合连接节点抗连续性倒塌性能试验研究[J].建筑结构学报,2014, 35(4): 57-64.
WANG Wei, LI Ling, CHEN Yi-yi. Experimental investigation on progressive collapse behavior of WUF-B connections between SHS column and H beam [J].Journal of Building Structures, 2014, 35(4):57-64.
[14] 王伟,李玲,陈以一,等. 圆钢管柱-H形梁外环板式节点抗连续性倒塌性能试验研究[J].建筑结构学报,2014,35(7):26- 33.
WANG Wei, LI Ling, CHEN Yi-yi,et al. Experimental study on progressive collapse behavior of CHS column-to-H beam connections with outer-diaphragm[J]. Journal of Building Structures, 2014, 35,35(7):26- 33.
[15] General services administration (GSA). Progressive collapse analysis and design guidelines for new federal office buildings and major modernization projects[S]. 2003.
[16] Department of defense (DoD). Design of buildings to resist progressive collapse, unified facilities criteria (UFC) 4-02303 [S]. 2009.
