圆钢管柱-H形钢梁铸钢连接节点传力机理与承载力理论研究
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摘要
圆钢管柱-H形钢梁梁柱铸钢连接节点是采用预制铸钢连接件代替圆钢管柱-H形钢梁梁柱节点中的加强构件形成的梁柱节点。为研究该节点承载能力,对节点在弯矩作用下的传力机理进行了分析,给出了圆柱面壳受法向力挠度理论解,基于变形协调原理揭示了节点传力机理和荷载分布规律,证明了节点荷载由铸钢连接件和圆钢管柱共同承担。基于屈服线理论推导了节点承载力计算式。开展了4组9个试件的节点足尺试验研究,用以验证节点荷载分布机理和承载力计算式,并开展了参数化有限元分析。结果表明,对于钢管柱外径为203～500 mm,径厚比为12～25的中厚度圆钢管,采用环板宽为20～50 mm、高为30～120 mm的铸钢连接件时,节点承载力的理论公式计算值与试验值及有限元分析值吻合良好,验证了圆钢管柱-H形钢梁铸钢连接节点传力机理和承载力理论计算式的正确性。
Cast steel H-shaped beam to circular tube column joints are formed by using cast-steel stiffener rings that replace the conventional stiffeners in joints. The moment transferring mechanism and bearing capacity of the cast steel joints were analyzed in this paper. A theoretical model for the deformation of the cylindrical shell under normal concentrated forces was proposed. Based on a deformation compatibility condition, the load transferring mechanism was revealed. It is proved that the moment applied to the joint is shared by both the cast steel stiffeners and the circular tube column. A bearing capacity prediction model was proposed based on yield line theory. Four series of nine specimens of the joints were studied by static experimental test and parametric finite element analyses were conducted to verify the load distribution rule and the formula of the bearing-capacity behavior of the joints. It is shown that for the following cases: the outside diameter of the steel tube column ranges from 203 to 500 mm, the radius-to-thickness ratio of the steel tube column is between 12 and 25, the width of cast steel ring ranges from 20 to 50 mm, and the thickness of cast steel ring ranges from 30 to 120 mm, the bearing capacities of the joints given by the theoretical model agree well with the finite element analysis prediction. The proposed load transferring mechanism and bearing capacity model of the cast steel joints are verified through the experimental and finite element results.
Cast steel H-shaped beam to circular tube column joints are formed by using cast-steel stiffener rings that replace the conventional stiffeners in joints. The moment transferring mechanism and bearing capacity of the cast steel joints were analyzed in this paper. A theoretical model for the deformation of the cylindrical shell under normal concentrated forces was proposed. Based on a deformation compatibility condition, the load transferring mechanism was revealed. It is proved that the moment applied to the joint is shared by both the cast steel stiffeners and the circular tube column. A bearing capacity prediction model was proposed based on yield line theory. Four series of nine specimens of the joints were studied by static experimental test and parametric finite element analyses were conducted to verify the load distribution rule and the formula of the bearing-capacity behavior of the joints. It is shown that for the following cases: the outside diameter of the steel tube column ranges from 203 to 500 mm, the radius-to-thickness ratio of the steel tube column is between 12 and 25, the width of cast steel ring ranges from 20 to 50 mm, and the thickness of cast steel ring ranges from 30 to 120 mm, the bearing capacities of the joints given by the theoretical model agree well with the finite element analysis prediction. The proposed load transferring mechanism and bearing capacity model of the cast steel joints are verified through the experimental and finite element results.
引文
[1] ZHANG Ailin, LI Ran, JIANG Ziqin, et al. Experimental study of earthquake-resilient PBCSC with double flange cover plates[J]. Journal of Constructional Steel Research, 2018, 143(4): 343-356.
[2] RONG Bin, LIU Shuai, YAN Jiabao, et al. Shear behaviour of panel zone in through-diaphragm connections to steel tubular columns[J]. Thin-Walled Structures, 2018, 122(1): 286-299.
[3] SKALOMENOS K A, HATZIGEORGIOU G D, BESKOS D E. Modeling level selection for seismic analysis of concrete-filled steel tube/moment-resisting frames by using fragility curves[J]. Earthquake Engineering & Structural Dynamics, 2015, 44(2): 199-220.
[4] KHANOUKI M M A, SULONG N H R, SHARIATI M, et al. Investigation of through beam connection to concrete filled circular steel tube (CFCST) column[J]. Journal of Constructional Steel Research, 2016, 121(6): 144-162.
[5] 薛建阳,戚亮杰,隋,等. 仿古建筑圆钢管柱-工字钢截面双梁节点抗剪承载力研究[J]. 地震工程与工程振动,2016,36(4):192-199.(XUE Jianyang, QI Liangjie, SUI Yan, et al.Research on shear capacity of circle tubular steel column-double I-shaped section beam joints in imitated ancient building[J].Earthquake Engineering and Engineering Dynamics,2016,36(4):192-199.(in Chinese))
[6] 王宇航, 聂建国, 樊健生. 圆钢管混凝土柱的受扭性能研究[J]. 工程力学, 2014, 31(3):222-227.(WANG Yuhang, NIE Jianguo, FAN Jiansheng. Study on the torsion behavior of concrete filled steel tube column with circular section[J]. Engineering Mechanics, 2014, 31(3): 222-227. (in Chinese))
[7] 刘晓刚, 樊健生, 陶慕轩,等. 钢管混凝土柱-钢梁节点核心区受剪承载力计算对比研究[J]. 建筑结构学报, 2012, 33(2):85-92.(LIU Xiaogang, FAN Jiansheng, TAO Muxuan,et al. Comparison and analysis on design method of shear capacityof panel zone between CFT column and steel beam[J]. Journal of Building Structures,2012,33(2):85-92.(in Chinese))
[8] 中野建蔵, 北野隆司, 吉永克寧, 等. 鋳鋼製外ダイアフラムハイブレード工法の開発 [J]. 日立金属技報,2003,19:67-70.(KENZO Nakano, TAKASHI Kitano, KATSUNEI Yoshinaga, et al. Development of ‘HIBLADE process’ with external stiffener rings using cast steel[J]. Hitachi Metals Technical Review,2003,19:67-70. (in Japanese))
[9] 韩庆华,刘铭劼,芦燕.方钢管柱-H形钢梁铸钢连接节点力学性能分析[J]. 天津大学学报(自然科学与工程技术版),2015,48(6):502-509.(HAN Qinghua, LIU Mingjie, LU Yan. Mechanical behavior analysis of cast steel joints connecting H-shaped beam and square tube column[J]. Journal of Tianjin University(Science and Technology), 2015,48(6):502-509.(in Chinese))
[10] HAN Qinghua, LIU Mingjie, LU Yan. Experimental research on load-bearing capacity of cast steel joints for beam-to-column[J]. Structural Engineering and Mechanics, 2015, 56(1): 67-83.
[11] 韩庆华,刘铭劼,芦燕,等.方钢管柱-H形钢梁铸钢连接节点静力性能试验研究[J].建筑结构学报,2015,36(9):101-109.(HAN Qinghua, LIU Mingjie, LU Yan, et al. Experimental research on static behavior of cast steel joints for H-shaped beam to square tube column[J]. Journal of Building Structures, 2015,36(9):101-109.(in Chinese))
[12] TIMOSHENKO S, WOINOWSKY-KRIEGER S. Theory of plates and shells[M]. New York:McGraw-hill,1959:5.
[13] MORITA K, YAMAMOTO N, EBATO K. Analysis on the strength of unstiffened beam flange to RHS column connections based on the combined yield line model[C]// The Third International Symposium on Tubular Structures. Lappeenranta: International Institute of Welding, 1989:164-171.
[2] RONG Bin, LIU Shuai, YAN Jiabao, et al. Shear behaviour of panel zone in through-diaphragm connections to steel tubular columns[J]. Thin-Walled Structures, 2018, 122(1): 286-299.
[3] SKALOMENOS K A, HATZIGEORGIOU G D, BESKOS D E. Modeling level selection for seismic analysis of concrete-filled steel tube/moment-resisting frames by using fragility curves[J]. Earthquake Engineering & Structural Dynamics, 2015, 44(2): 199-220.
[4] KHANOUKI M M A, SULONG N H R, SHARIATI M, et al. Investigation of through beam connection to concrete filled circular steel tube (CFCST) column[J]. Journal of Constructional Steel Research, 2016, 121(6): 144-162.
[5] 薛建阳,戚亮杰,隋,等. 仿古建筑圆钢管柱-工字钢截面双梁节点抗剪承载力研究[J]. 地震工程与工程振动,2016,36(4):192-199.(XUE Jianyang, QI Liangjie, SUI Yan, et al.Research on shear capacity of circle tubular steel column-double I-shaped section beam joints in imitated ancient building[J].Earthquake Engineering and Engineering Dynamics,2016,36(4):192-199.(in Chinese))
[6] 王宇航, 聂建国, 樊健生. 圆钢管混凝土柱的受扭性能研究[J]. 工程力学, 2014, 31(3):222-227.(WANG Yuhang, NIE Jianguo, FAN Jiansheng. Study on the torsion behavior of concrete filled steel tube column with circular section[J]. Engineering Mechanics, 2014, 31(3): 222-227. (in Chinese))
[7] 刘晓刚, 樊健生, 陶慕轩,等. 钢管混凝土柱-钢梁节点核心区受剪承载力计算对比研究[J]. 建筑结构学报, 2012, 33(2):85-92.(LIU Xiaogang, FAN Jiansheng, TAO Muxuan,et al. Comparison and analysis on design method of shear capacityof panel zone between CFT column and steel beam[J]. Journal of Building Structures,2012,33(2):85-92.(in Chinese))
[8] 中野建蔵, 北野隆司, 吉永克寧, 等. 鋳鋼製外ダイアフラムハイブレード工法の開発 [J]. 日立金属技報,2003,19:67-70.(KENZO Nakano, TAKASHI Kitano, KATSUNEI Yoshinaga, et al. Development of ‘HIBLADE process’ with external stiffener rings using cast steel[J]. Hitachi Metals Technical Review,2003,19:67-70. (in Japanese))
[9] 韩庆华,刘铭劼,芦燕.方钢管柱-H形钢梁铸钢连接节点力学性能分析[J]. 天津大学学报(自然科学与工程技术版),2015,48(6):502-509.(HAN Qinghua, LIU Mingjie, LU Yan. Mechanical behavior analysis of cast steel joints connecting H-shaped beam and square tube column[J]. Journal of Tianjin University(Science and Technology), 2015,48(6):502-509.(in Chinese))
[10] HAN Qinghua, LIU Mingjie, LU Yan. Experimental research on load-bearing capacity of cast steel joints for beam-to-column[J]. Structural Engineering and Mechanics, 2015, 56(1): 67-83.
[11] 韩庆华,刘铭劼,芦燕,等.方钢管柱-H形钢梁铸钢连接节点静力性能试验研究[J].建筑结构学报,2015,36(9):101-109.(HAN Qinghua, LIU Mingjie, LU Yan, et al. Experimental research on static behavior of cast steel joints for H-shaped beam to square tube column[J]. Journal of Building Structures, 2015,36(9):101-109.(in Chinese))
[12] TIMOSHENKO S, WOINOWSKY-KRIEGER S. Theory of plates and shells[M]. New York:McGraw-hill,1959:5.
[13] MORITA K, YAMAMOTO N, EBATO K. Analysis on the strength of unstiffened beam flange to RHS column connections based on the combined yield line model[C]// The Third International Symposium on Tubular Structures. Lappeenranta: International Institute of Welding, 1989:164-171.