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[1]周德源,刘长勋.车辆撞击作用下RC桥墩动力响应[J].建筑科学与工程学报,2020,37(02):11-19.[doi:10.19815/j.jace.2019.04028]
 ZHOU De-yuan,LIU Chang-xun.Dynamic Response of RC Bridge Pier Under Vehicle Impact Load[J].Journal of Architecture and Civil Engineering,2020,37(02):11-19.[doi:10.19815/j.jace.2019.04028]
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《建筑科学与工程学报》[ISSN:1673-2049/CN:61-1442/TU]

卷:
37卷
期数:
2020年02期
页码:
11-19
栏目:
出版日期:
2020-03-30

文章信息/Info

Title:
Dynamic Response of RC Bridge Pier Under Vehicle Impact Load
文章编号:
1673-2049(2020)02-0011-09
作者:
周德源刘长勋
(同济大学 结构防灾减灾工程系,上海 200092)
Author(s):
ZHOU De-yuan LIU Chang-xun
(Department of Disaster Mitigation for Structures, Tongji University, Shanghai 200092, China)
关键词:
混凝土桥墩 车辆撞击 动力响应 损伤 参数分析
Keywords:
concrete bridge pier vehicle impact dynamic response damage parameter analysis
分类号:
TU311
DOI:
10.19815/j.jace.2019.04028
文献标志码:
A
摘要:
采用LS-DYNA建立了钢筋混凝土(RC)桥墩水平撞击有限元模型,简要介绍了有限元建模技术及相关参数的取值,并通过与水平撞击试验结果进行对比,验证了目前较为常用的2种混凝土本构模型和钢筋本构模型的有效性,进而验证了有限元结果的有效性,并进一步研究了桥墩在等代车辆撞击作用下的破坏机理,分析了与桥墩动力响应和损伤程度有关的影响参数。结果表明:对于水平撞击试验而言,采用MAT_SCHWER_MURRAY_CAP_MODEL(145#)混凝土和MAT_PLASTIC_KINEMATIC(3#)钢筋材料模型构建的有限元模型能够更加准确地反映RC桥墩在等效车辆撞击作用下的动力特性、剪切破坏模式和损伤分布; 在等代车辆撞击作用下,混凝土的损伤累积主要集中于墩底剪切带处,而桥墩其他部位的混凝土未出现明显损伤累积; 参数分析结果表明,增大撞击质量能够显著增大撞击荷载峰值、桥墩变形和损伤程度; 提高撞击位置会使桥墩破坏模式由局部剪切破坏转变为整体弯曲(或弯剪)破坏; 在相同撞击冲量下,撞击荷载峰值、桥墩变形和耗能会随撞击速度增加而增大。
Abstract:
Through LS-DYNA, the finite element model of reinforced concrete(RC)pier under horizontal impact was established, and the finite element modeling technology and the value of relevant parameters were briefly introduced. By comparing with the results of horizontal impact test, two kinds of commonly used constitutive models of concrete and reinforcement were verified, so the validity of the finite element results was verified. The failure mechanism of the bridge pier under the impact of equivalent vehicles was further studied, and the influence parameters related to the dynamic response and damage degree of the bridge pier were analyzed. The results show that for the horizontal impact test, the finite element model established by MAT_SCHWER_MURRAY_CAP_ MODEL(145#)concrete and MAT_PLASTIC_KINEMATIC(3#)reinforced material model can more accurately reflect the dynamic characteristics, shear failure mode and damage distribution of RC piers under the impact of equivalent vehicles. Under the impact of equivalent vehicles, the damage accumulation of concrete is mainly concentrated in the shear zone at the pier bottom, while no obvious damage accumulation occurs in other parts of the pier. Parameter analysis shows that increasing the impact mass can significantly increase the peak value of impact load, pier deformation and damage degree. Increasing the impact position will change the failure mode of pier from local shear failure to global bending(or bending shear)failure. Under the same impact impulse, the peak value of impact load, pier deformation and energy consumption will increase with the increase of impact velocity.

参考文献/References:

[1] PHAM T M,HAO H.Plastic Hinges and Inertia Forces in RC Beams Under Impact Loads[J].International Journal of Impact Engineering,2017,103:1-11.
[2]孟 一.冲击荷载作用下钢筋混凝土梁的试验及数值模拟研究[D].长沙:湖南大学,2012.
MENG Yi.Experiment and Numerical Simulation Study on Reinforced Concrete Beam Under Impact Loading[D].Changsha:Hunan University,2012.
[3]曾 翔,许 斌.无腹筋钢筋混凝土梁抗冲击行为试验研究[J].土木工程学报,2012,45(9):63-73.
ZENG Xiang,XU Bin.Experimental Study on the Impact-resistant Behavior of RC Beams Without Shear-resistant Rebar[J].China Civil Engineering Journal,2012,45(9):63-73.
[4]许 斌,曾 翔.冲击作用下钢筋混凝土深梁动力性能试验研究[J].振动与冲击,2015,34(4):6-13,39.
XU Bin,ZENG Xiang.Tests for Dynamic Behaviors of Deep RC Beams Under Impact Loadings[J].Journal of Vibration and Shock,2015,34(4):6-13,39.
[5]KISHI N,MIKAMI H,MATSUOKA K G,et al.Impact Behavior of Shear-failure-type RC Beams Without Shear Rebar[J].International Journal of Impact Engineering,2002,27(9):955-968.
[6]陈 林.桥墩防车辆撞击研究[D].长沙:湖南大学,2015.
CHEN Lin.Research on Bridge Piers Subjected to Vehicle Collisions[D].Changsha:Hunan University,2015.
[7]FUJIKAKE K,LI B,SOEUN S.Impact Response of Reinforced Concrete Beam and Its Analytical Evaluation[J].Journal of Structural Engineering,2009,135(8):938-950.
[8]MURRAY Y D,ABU-ODEH A,BLIGH R.Evaluation of LS-DYNA Concrete Material Model 159[R].Washington DC:Federal Highway Administration,2007.
[9]MURRAY Y D.User's Manual for LS-DYNA Concrete Material Model 159[R].Washington DC:Federal Highway Administration,2007.
[10]姜 华,贺拴海,王君杰.混凝土弹塑性损伤帽盖模型参数确定研究[J].振动与冲击,2012,31(15):132-139.
JIANG Hua,HE Shuan-hai,WANG Jun-jie.Parameters Determination of Elasto-plastic Damage Cap Model for Concrete Materials[J].Journal of Vibration and Shock,2012,31(15):132-139.
[11]姜 华,贺拴海,王君杰.钢筋混凝土梁冲击试验数值模拟研究[J].振动与冲击,2012,31(15):140-145.
JIANG Hua,HE Shuan-hai,WANG Jun-jie.Numerical Simulation of the Impact Test of Reinforced Concrete Beams[J].Journal of Vibration and Shock,2012,31(15):140-145.
[12]姜 华,王君杰,贺拴海.钢筋混凝土梁桥船舶撞击连续倒塌数值模拟[J].振动与冲击,2012,31(10):68-73.
JIANG Hua,WANG Jun-jie,HE Shuan-hai.Numerical Simulation on Continuous Collapse of Reinforced Concrete Girder Bridge Subjected to Vessel Collision[J].Journal of Vibration and Shock,2012,31(10):68-73.
[13]JIANG H,ZHAO J.Calibration of the Continuous Surface Cap Model for Concrete[J].Finite Elements in Analysis and Design,2015,97:1-19.
[14]HALLQUIST J O.LS-DYNA Keyword User's Manual[M].Livermore:Livermore Software Technology Corporation,2010.
[15]王 娟.城市桥梁下部结构抵抗重型车辆撞击的性能研究[D].上海:同济大学,2015.
WANG Juan.Study on the Performance of Urban Bridge Substructure Against Heavy Vehicle Impact[D].Shanghai:Tongji University,2015.
[16]SHI Y,LI Z X,HAO H.Bond Slip Modelling and Its Effect on Numerical Analysis of Blast-induced Responses of RC Columns[J].Structural Engineering & Mechanics,2009,32(2):251-267.
[17]刘 飞.钢筋混凝土桥墩抗车辆撞击机理研究[D].长沙:湖南大学,2017.
LIU Fei.The Mechanism Research of Reinforced Concrete Piers Subjected to Vehicle Collisions[D].Changsha:Hunan University,2017.
[18]王 娟,钱 江,周德源.城市桥梁下部结构抗重型车辆撞击的数值仿真分析[J].湖南大学学报:自科版,2016,43(7):88-95.
WANG Juan,QIAN Jiang,ZHOU De-yuan.Numerical Simulation of Urban Bridge Substructures Impacted by Heavy Vehicles[J].Journal of Hunan Univeristy:Natural Sciences,2016,43(7):88-95.
[19]SHA Y,HAO H.Nonlinear Finite Element Analysis of Barge Collision with a Single Bridge Pier[J].Engineering Structures,2012,41:63-76.
[20]SHA Y,HAO H.Laboratory Tests and Numerical Simulations of Barge Impact on Circular Reinforced Concrete Piers[J].Engineering Structures,2013,46:593-605.
[21]SHA Y,HAO H.Laboratory Tests and Numerical Simulations of CFRP Strengthened RC Pier Subjected to Barge Impact Load[J].International Journal of Structural Stability and Dynamics,2015,15(2):1450037.
[22]PHAM T M,HAO Y F,HAO H.Sensitivity of Impact Behaviour of RC Beams to Contact Stiffness[J].International Journal of Impact Engineering,2018,112:155-164.

相似文献/References:

备注/Memo

备注/Memo:
收稿日期:2019-04-13
基金项目:国家自然科学基金重点项目(51438010)
作者简介:周德源(1960-),男,上海市人,教授,博士研究生导师,工学博士,E-mail:concrete@126.com。
更新日期/Last Update: 2020-04-21