地震作用下混合桥结合段的极限承载力分析
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摘要
采用Nishiumi算法分析地震作用下混合桥结合段的极限承载力时,未考虑贯穿钢筋对混合桥结合段剪力键承载力的影响作用,分析出的极限承载力结果与实际结果差异较大。提出新的地震作用下混合桥结合段的极限承载力分析方法。通过分析计算得到栓钉类剪力键和钢筋混凝土柱类剪力键的极限承载力,设计新的极限承载力分析试验,通过设计剪力键试件、试件地震加载和试验测试点安置和测试内容安排,分析地震作用下混合桥结合段剪力键的极限承载力。分析结果说明,所提方法可准确分析地震作用下混合桥结合段剪力键的极限承载力,且分析得到的极限承载力结果与实测结果几乎一致,误差不超过7%。
The effect of through-reinforcing rebar on the bearing capacity of the shear connectors of the hybrid bridge is not considered when the Nishiumi algorithm is used for analyzing the ultimate bearing capacity of the joint sections of hybrid bridges under earthquake action; therefore, the analysis results of ultimate bearing capacity are considerably different from the actual results. A new analysis method has been proposed in this study with respect to the ultimate bearing capacity of the joint sections of a hybrid bridge under earthquake action. Further, the ultimate bearing capacities of the stud-type and the RC column-type shear connectors were obtained through analysis and calculation, and a new ultimate bearing capacity analysis test was designed. Using the design of the shear connector specimens, the seismic loading of the specimens, and the test arrangement, the ultimate bearing capacity of the shear connector in the joint sections of a hybrid bridge was analyzed under earthquake action. The analysis results exhibited that the proposed method can accurately analyze the ultimate bearing capacity of the shear connector in the joint sections of a hybrid bridge under earthquake action; the analysis results were almost the same as the measured results and exhibited a difference of less than 7%.
The effect of through-reinforcing rebar on the bearing capacity of the shear connectors of the hybrid bridge is not considered when the Nishiumi algorithm is used for analyzing the ultimate bearing capacity of the joint sections of hybrid bridges under earthquake action; therefore, the analysis results of ultimate bearing capacity are considerably different from the actual results. A new analysis method has been proposed in this study with respect to the ultimate bearing capacity of the joint sections of a hybrid bridge under earthquake action. Further, the ultimate bearing capacities of the stud-type and the RC column-type shear connectors were obtained through analysis and calculation, and a new ultimate bearing capacity analysis test was designed. Using the design of the shear connector specimens, the seismic loading of the specimens, and the test arrangement, the ultimate bearing capacity of the shear connector in the joint sections of a hybrid bridge was analyzed under earthquake action. The analysis results exhibited that the proposed method can accurately analyze the ultimate bearing capacity of the shear connector in the joint sections of a hybrid bridge under earthquake action; the analysis results were almost the same as the measured results and exhibited a difference of less than 7%.
引文
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[14] 何江,王玉振.大跨度桥梁结构多级地震响应研究[J].地震工程学报,2018,40(1):26-31.HE Jiang,WANG Yuzhen.Study on the Multistage Seismic Response of Long-span Bridge Structures[J].China Earthquake Engineering Journal,2018,40(1):26-31.
[15] 张宁,罗卫华,刘迎春,等.基于虚拟现实技术的轮机英语环境仿真研究[J].计算机仿真,2015,32(6):212-217.ZHANG Ning,LUO Weihua,LIU Yingchun,et al.Research on Marine Engineering English Environment Simulation Based on Virtual Reality Technology[J].Computer Simulation,2015,32(6):212-217.
[2] 苗润池,李龙安,屈爱平.基于地震作用的大跨度混合梁斜拉桥钢混结合点位置优化分析[J].世界桥梁,2017,45(5):76-80.MIAO Runchi,LI Longan,QU Aiping.Optimization of Steel-concrete Joint Location of Long-span Hybrid Cable-stayed Bridge Based on Seismic Action[J].World Bridges,2017,45(5):76-80.
[3] 姜文,谭仕强.混合体系斜拉桥钢混结合段试验模型研究[J].公路工程,2017,42(4):102-107.JIANG Wen,TAN Shiqiang.Model Test Research of Steel and Concrete Joint Section for Hybrid Cable-stayed Bridges[J].Highway Engineering,2017,42(4):102-107.
[4] 蒲黔辉,周阳,施洲.铁路混合梁斜拉桥钢—混结合段受力及参数分析[J].桥梁建设,2016,46(1):12-17.PU Qianhui,ZHOU Yang,SHI Zhou.Mechanical Behavior and Parametric Analysis of Steel and Concrete Joint Section of Railway Hybrid Girder Cable-Stayed Bridge[J].Bridge Construction,2016,46(1):12-17.
[5] 高翔,周尚猛,陈开利.混合梁斜拉桥钢混结合段试验研究技术新进展[J].钢结构,2015,30(6):1-4.GAO Xiang,ZHOU Shangmeng,CHEN Kaili.New Development of the Experimental Research on Steel-Concrete Composite Joint of Composite Beam Cable-stayed Bridge[J].Steel Construction,2015,30(6):1-4.
[6] 凌龙,李东,许祥山,等.盘锦内湖大桥工程钢混结合段应用研究[J].施工技术,2016,45(24):55-57.LIANG Long,LI Dong,XU Xiangshan,et al.Application Research of Steel-Concrete Section in Panjin Neihu Bridge[J].Construction Technology,2016,45(24):55-57.
[7] 周阳,蒲黔辉,施洲,等.混合梁斜拉桥钢-混结合段剪力连接件群力学性能研究[J].铁道学报,2017,39(10):134-141.ZHOU Yang,PU Qianhui,SHI Zhou,et al.Study on Mechanical Behavior of Group Shear Connectors for Steel-Concrete Composite Joint of Hybrid Girder Cable-stayed Bridge[J].Journal of the China Railway Society,2017,39(10):134-141.
[8] 朱亚林,李端洲,汪正兴,等.混合梁斜拉桥钢混结合段脱空识别方法研究[J].合肥工业大学学报(自然科学版),2017,40(7):933-937.ZHU Yalin,LI Duanzhou,WANG Zhengxing,et al.Study of Identification Method of Steel-Concrete Joint Section Void of Hybrid Girder Cable-stayed Bridge[J].Journal of Hefei University of Technology (Natural Science) ,2017,40(7):933-937.
[9] 张建强,郑清刚.沪通长江大桥主航道桥公路桥面钢-混结合段设计[J].桥梁建设,2016,46(4):6-10.ZHANG Jianqiang,ZHENG Qinggang.Design of Steel and Concrete Composite Sections for Highway Deck of Main Ship Channel Bridge of Hutong Changjiang River Bridge[J].Bridge Construction,2016,46(4):6-10.
[10] 刘迎倩.自锚式悬索桥桥塔钢-混结合段受力的试验研究[J].铁道建筑,2018,58(2):13-17.LIU Yingqian.Experimental Study on Bridge Tower Steel-concrete Combined Segment of Self-anchored Suspension Bridge[J].Railway Engineering,2018,58(2):13-17.
[11] 王煦,董军,焦驰宇.纵向碰撞下FPS隔震曲线桥地震响应分析[J].工程抗震与加固改造,2016,38(2):64-70.WANG Xu,DONG Jun,JIAO Chiyu.Seismic Response Analysis of FPS Isolated Curved Bridge with Longitudinal Collision[J].Earthquake Resistant Engineering and Retrofitting,2016,38(2):64-70.
[12] 文传勇.万州长江大桥船舶撞击力有限元分析[J].重庆交通大学学报(自然科学版),2016,35(2):17-20.WEN Chuanyong.Finite Element Analysis of Ship Collision Force of Wanzhou Yangtze River Bridge[J].Journal of Chongqing Jiaotong University (Natural Sciences),2016,35(2):17-20.
[13] 张二,吴梵,吕岩松,等.加肋锥-环-柱结合壳连接分段极限承载能力分析[J].哈尔滨工程大学学报,2016,37(6):770-775.ZHANG Er,WU Fan,Lü Yansong,et al.Analysis of the Ultimate Bearing Capability of a Cabin With Ring-stiffened Cone-Toroid-Cylinder Combined Shell[J].Journal of Harbin Engineering University,2016,37(6):770-775.
[14] 何江,王玉振.大跨度桥梁结构多级地震响应研究[J].地震工程学报,2018,40(1):26-31.HE Jiang,WANG Yuzhen.Study on the Multistage Seismic Response of Long-span Bridge Structures[J].China Earthquake Engineering Journal,2018,40(1):26-31.
[15] 张宁,罗卫华,刘迎春,等.基于虚拟现实技术的轮机英语环境仿真研究[J].计算机仿真,2015,32(6):212-217.ZHANG Ning,LUO Weihua,LIU Yingchun,et al.Research on Marine Engineering English Environment Simulation Based on Virtual Reality Technology[J].Computer Simulation,2015,32(6):212-217.