超高车辆撞击预应力箱型梁桥上部结构的动态响应

田力; 冯振宁

doi:10.3969/j.issn.0258-2724.2016.04.005

超高车辆撞击预应力箱型梁桥上部结构的动态响应

doi: 10.3969/j.issn.0258-2724.2016.04.005

田力,
冯振宁

基金项目:

国家自然科学基金资助项目(50678116,51178310)

详细信息

作者简介:
田力(1970-),男,副教授,博士,研究方向为工程结构抗爆、抗冲击理论及防护技术,E-mail:ltian@tju.edu.cn

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- 文章访问数: 631
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- 被引次数: 0
出版历程
- 收稿日期: 2015-07-13
- 刊出日期: 2016-08-25

Dynamic Response of Superstructure of Prestressed Box-Girder Bridge to Over-High Truck Impact

摘要

摘要: 为揭示预应力箱型梁桥遭受超高车辆撞击下的损伤,将此类撞击的数字仿真与试验对比研究了箱型梁桥上部结构动态响应.运用LS-DYNA软件建立了精细化预应力箱型梁桥上部结构的三维分离式模型和车辆与桥梁上部结构的耦合模型,在汽车以80 km/h速度正面撞击桥梁时,研究桥梁、汽车的破坏损伤和桥梁整体位移,分析比较了车速分别为30、50、80 km/h时,桥梁上部结构遭受超高车辆撞击的动态响应.研究结果表明:质量较大的预应力箱型梁桥上部结构遭受超高车辆撞击时,桥梁整体损伤较小,应主要研究其局部破坏;撞击过程中车厢的形变会导致车-桥之间撞击形式由正面撞击向冲切撞击转变;车-桥碰撞力值和桥梁撞击区域位移值均与车速成正相关,当车速为80 km/h时的最大位移值为165 mm.
- 箱型梁桥 /
- 汽车撞击 /
- 分离式模型 /
- 动态响应
Abstract: In order to reveal the damage of the prestressed box-girder bridge caused by over high truck impact, a comparative analysis between a numerical simulation and an impact experiment was conducted to study the dynamic response of the superstructure of a box-girder bridge. A three-dimensional separation model of the prestressed box-girder bridge superstructure, together with the coupling model of the truck and the bridge superstructure, was established using LS DYNA software. With this model, the damage of bridge and truck and the overall displacement of bridge were investigated when the truck impacted the bridge frontally at a speed of 80 km/h, and the dynamic responses of the bridge superstructure to impacts of the over-high truck at speeds of 30, 50, and 80 km/h were compared. The results show that when the truck hit the high mass bridge, the whole bridge damage was little and therefore the study should focus on its local damage; during the collision, the deformation of the truck carriage can result in the transformation of the frontal impact into a punching impact; both the impact force value and the displacement value of the impact area of the bridge are positively correlated with the truck speed, and the maximum displacement is 165 mm when the truck speed is 80 km/h.
- box girder bridge /
- vehicle impact /
- separation model /
- dynamic response

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参考文献(15)

叶晓飞,邓社军,陈峻,等. 路内停车对非机动车道通行能力的影响[J]. 西南交通大学学报,2015,50(3):529-535.YE Xiaofei, DENG Shejun, CHEN Jun, et al. Impact of curbside parking on bicycle lane capacity[J]. Journal of Southwest Jiaotong University, 2015, 50(3):529-535.

中交公路规划设计院. JTGD60-2004公路桥涵设计通用规范[S]. 北京:人民交通出版社,2004.

陆新征,张炎圣,叶列平,等. 超高车辆-桥梁上部结构碰撞的破坏模式与荷载计算[J]. 中国公路学报,2009,22(5):60-67.LU Xinzheng, ZHANG Yansheng, YE Lieping, et al. Failure modes and load calculation of collison between over-high truck and bridge superstructure[J]. China Journal of Highway and Transport, 2009, 22(5):60-67.

陆新征,卢啸,张炎圣,等. 超高车辆-桥梁上部结构撞击力的工程计算方法[J]. 中国公路学报,2011,24(2):49-55.LU Xinzheng, LU Xiao, ZHANG Yansheng, et al. Engineering calculation method for collision force between over-high truck and bridge superstructure[J]. China Journal of Highway and Transport, 2011, 24(2):49-55.

张炎圣,陆新征,叶列平,等. 超高车辆-桥梁上部结构碰撞荷载精细有限元模拟与简化计算[J]. 工程力学,2011,28(1):116-123.ZHANG Yansheng, LU Xinzheng, YE Lieping, et al. High precision finite element simulation and simplified calculation for the collision load between over-high truck andbridge superstructure[J]. Engineering Mechanics, 2011, 28(1):116-123.

张炎圣,陆新征,宁静,等. 超高车辆撞击组合结构桥梁的仿真分析[J]. 交通与计算机,2007,25(3):65-69.ZHANG Yansheng, LU Xinzheng, NING Jing, et al. Computer simulation for the impact between over-high truck and composite viaduct[J]. Computer and Communication, 2007, 25(3):65-69.

何水涛,张炎圣,卢啸,等. 某超高车辆撞落人行天桥事故的过程仿真与分析[J]. 交通信息与安全,2009,27(6):89-92.HE Shuitao, ZHANG Yansheng, LU Xiao, et al. Simulation and analysis of a collision accident between over-high truck and pedestrian bridge[J]. Journal of Transport Information and Safety, 2009, 27(6):89-92.

陆新征,何水涛,黄盛楠. 超高车辆撞击桥梁上部结构研究-破坏机理、设计方法和防护研[M]. 北京:中国建筑工业出版社,2011:109-138.

闫志刚. 钢筋混凝土及预应力混凝土[M]. 北京:机械工业出版社,2009:246-288.

KRAUTHAMMER T, SHAHRIAR S, SHANAA H M.Response of reinforced concrete elements to severe impulsive loads[J]. Journal of Structure Engineering, 1990, 116(4):1061-1079.

European Committee for Standardization. BS EN1991-1-7 Eurocode 1-actions on structures-part 1-7:general actions-accidental actions[S]. London:The British Standards Institute(BSI), 2006.

赵海鸥. LS-DYNA动力分析指南[M]. 北京:兵器工业出版社,2003:156-159.

HALLQUIST J O. LS-DYNA keywords user's manual[M]. Livermore:Livemore Software Technology Corporation, 2006:38-258.

田力,杜彬. 钢筋混凝土柱在汽车撞击作用下的性能研究[J]. 沈阳建筑大学学报:自然科学版,2015,31(1):1-9.TIAN Li, DU Bin. Research on performances of reinforced concrete column under vehicle impact[J]. Journal of Shenyang Jianzhu University:Natural Science, 2015, 31(1):1-9.

何水涛,陆新征,卢啸,等. 超高车辆撞击钢筋混凝土T梁桥主梁试验研究[J]. 兰州交通大学学报,2011,30(6):20-25.HE Shuitao, LU Xinzheng, LU Xiao, et al. Experimental study on the collision between over-height truck and main girder of concrete T-girder bridge[J]. Journal of Lanzhou Jiaotong University, 2011, 30(6):20-25.

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文章访问数: 631
HTML全文浏览量: 83
PDF下载量: 208
被引次数: 0

超高车辆撞击预应力箱型梁桥上部结构的动态响应

doi: 10.3969/j.issn.0258-2724.2016.04.005

作者简介: 田力(1970-),男,副教授,博士,研究方向为工程结构抗爆、抗冲击理论及防护技术,E-mail:ltian@tju.edu.cn

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出版历程

Dynamic Response of Superstructure of Prestressed Box-Girder Bridge to Over-High Truck Impact

计量

出版历程

目录

作者简介:
田力(1970-),男,副教授,博士,研究方向为工程结构抗爆、抗冲击理论及防护技术,E-mail:ltian@tju.edu.cn