Typical Damage and Ｒeinforcement Method for Steel Truss Ｒailway
Bridge with Orthotropic Deck

doi:10.3969/j.issn.1674-0696.2013.sup.1.15

Abstract

Abstract: Taking an old steel truss railway bridge with 32 m orthotropic deck as the research object，typical crack damages were classified and investigated． By using shell element in ANSYS，3D finite element model was established． Considering the common and extreme load case，different mechanical behaviors of the bridge were analyzed． Based on Chinese railway steel bridge design code，fatigue stress range of the welded connection，where crack occurs，was obtained by calculation． Through investigating the structure characteristics and mechanical behaviors of typical welded connection respectively，and combining with the simulation results，the causes of fatigue crack in different structural detail were analyzed． Focusing on the specific characteristics of various diseases，the reinforcement method steel truss railway bridge with orthotropic deck was proposed based on the reinforcement cases home and abroad．Ｒesearch results show that welding defects，unforeseen deformations and bearing cavity may cause diseases and cracks of this kind of steel bridges． The stresses at welded detail are improved by splicing angle steel with high-strength bolts，which can improve the fatigue performance and the reinforcement of the structure．

Key words: deck steel truss, orthotropic deck, fatigue crack, finite element analysis, reinforcement method

摘要： 以铁路32m正交异性板桥面上承钢桁梁为研究对象，对典型裂纹病害进行分类描述。利用ANSYS软件，采用板壳单元，建立空间有限元模型，开展正常条件及极端条件下力学行为分析，按照设计规范计算得到开裂位置处局部点疲劳应力幅。通过考察各典型连接细节的构造特点及受力行为，结合数值模拟结果，对各典型病害的开裂原因进行分析。针对各类病害具体特征，参考国内外钢桥病害整治方案，对正交异性板桥面上承钢桁梁进行加固改造。结果表明:焊接缺陷、面外变形及支座脱空是该类桥梁出现裂缝病害的主要原因;通过高强螺栓拼接角钢增加连接细节局部刚度可有效提高结构疲劳强度，达到结构加固改造目标。

关键词: 上承式钢桁梁, 正交异性桥面, 疲劳裂纹, 有限元分析, 加固方法

CLC Number:

U443.35

Wei Xing，Li Jun，Jiang Su，Shao Kefu，Liao Ping. Typical Damage and Ｒeinforcement Method for Steel Truss Ｒailway Bridge with Orthotropic Deck[J]. Journal of Chongqing Jiaotong University(Natural Science), 2013, 32(增1): 788-791.

卫星，李俊，姜苏，邵珂夫，廖平. 铁路正交异性桥面上承钢桁梁典型病害分析及加固方法研究[J]. 重庆交通大学学报（自然科学版）, 2013, 32(增1): 788-791.

References

[1]Fisher J W.Fatigue and Fracture in Steel Bridges (Case Studies) [M].Sussex，England: Wiley (John)＆ Sons Limited， 1984．
[2]Fisher J W，Yen B T，Wang D.Fatigue of Bridge Structures，a Commentary and Guide for Design，Evaluation and Investigation of Cracking [M].Victoria: AＲＲB Group Limited，1990．
[3]Miki C.The cases of fatigue damage occurred in welded bridges in the United States [J].Bridge and Foundation Engineering，1982， 16(10): 18-24．
[4]Miki C.Ｒepairing，reinforcing and fatigue problem in foreign countries’bridges [J].Bridge and Foundation Engineering，1983，17 (8): 30-34．
[5]B K¨uhn，M Lukic，A Nussbaumer，et al.Assessment of Existing Steel Structures: Ｒecommendations for Estimation of Ｒemaining Fatigue Life [Ｒ].Ispra， Italy: Joint Ｒesearch Center，2008．
[6]Alemdar F.Ｒepair of Bridge Steel Girders Damaged by Distortion Induced Fatigue [D].Kansas，USA: University of Kansas，2011．
[7]Kudryavtsev Y，Kleiman J，Lugovskoy A，et al.Ｒehabilitation and repair of welded elements and structures by ultrasonic preening [J].Welding in the World，2007，51(7 /8): 47-53．
[8]Connor Ｒ J，Fisher J W.Identifying effective and ineffective retrofits for fatigue cracking in steel bridges using field instrumentation [J].Journal of Bridge Engineering，2006，1 1(6)，745-752．
[9]Massarelli P J，Zhou Y E，Gomez J P.Fatigue Strength Assessment of I-95 Bridge over James Ｒiver [C].VA，USA: ASCE，1999．
[10]史永吉，杨妍曼，陈则淦.铁路焊接钢桥疲劳裂纹原因分析及其对策[J].铁道学报，1 986(2): 83-92．
Shi Yongji，Yang Yanman，Chen Zegan.Analysis on the causes of fatigue cracking in welded steel railway and its treatment[J].Journal of the China Ｒailway Society，1986(2): 83-92．
[11]王春生，陈艾荣，陈惟珍.铆接钢桥剩余寿命与使用安全评估方法[J].同济大学学报: 自然科学版，2006，3 4(3): 325-330．
Wang Chunsheng，Chen Airong，Chen Weizhen.Assessment methods of remaining fatigue life and service safety for riveted steel bridges [J].Journal of Tongji University: Natural Science，2006， 34(3): 325-330．
[12]雷宏刚.钢结构事故分析与处理[M].北京: 中国建材工业出版社，2 003．
Lei Honggang.Analysis and Treatment of Accident in Steel Structure [M].Beijing: China Building Materials Press，2003．

[1]	LIU Jinchun, SONG Zixuan, LIANG Dong. Spatial Effect Analysis of Single Box Three Chambers Continuous Girder Bridge under Transverse Temperature Gradient and Eccentric Vehicle Load [J]. Journal of Chongqing Jiaotong University(Natural Science), 2021, 40(06): 80-86.
[2]	SU Xiaobo1, XIAO Lin2. Model Test and Numerical Simulation Research on Reasonable Structure of Steel-Concrete Composite Section in Space Rigid Frame [J]. Journal of Chongqing Jiaotong University(Natural Science), 2021, 40(04): 76-82.
[3]	KONG Lingyun1, ZOU Shengnan1, HUANG Linhuo2, WU Haiying3, YU Miao1, YANG Bo1. Numerical Simulation Study on Fatigue Crack Propagation of Composite Pavement [J]. Journal of Chongqing Jiaotong University(Natural Science), 2021, 40(04): 91-97.
[4]	YANG Jingdong1, LI Yangwu1, LIU Meishan2, HUANG Bing3. Mechanical Analysis and Optimal Design of Hinge System of 60 m3 Articulated Split Hopper Barge [J]. Journal of Chongqing Jiaotong University(Natural Science), 2020, 39(12): 130-134.
[5]	WANG Hu,CHEN Xiang, WANG Ya. Mechanical Analysis of Viscoelastic Pavement under the Condition of Interlayer Contact [J]. Journal of Chongqing Jiaotong University(Natural Science), 2020, 39(07): 66-72.
[6]	DU Qing, ZHANG Senbo, QING Longbang. Analysis and Simulation of Mechanical Performance of Precast Segmental Assembly Piers [J]. Journal of Chongqing Jiaotong University(Natural Science), 2020, 39(07): 73-80.
[7]	MAO Jianghong1,2，LU Fei1，ZHANG Yi3，ZENG Jiahua4，YAN Jianbiao3. Modification of Creep Model Based on Experiment and Bridge Linear Analysis Method [J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(12): 38-44.
[8]	MA Shibin, GAO Jianqiang, WEI Jianhui, ZHANG Xiaoyun. Structure Optimization of Stone Roadbed Asphalt Pavement Based on Response Surface Method [J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(03): 44-50.
[9]	HONG Hua, JIN Sujing, YANG Yongyong. Web Cracking Causes of Cantilever Box Girder [J]. Journal of Chongqing Jiaotong University(Natural Science), 2019, 38(02): 13-18.
[10]	QU Yu1，2，ZENG Yong1，2，GU Anbang1，2，DU Baisong1，2. XFEM and Its Application to Fatigue Crack Extension of Orthotropic Steel Bridge Deck [J]. Journal of Chongqing Jiaotong University(Natural Science), 2018, 37(04): 21-27.
[11]	XU Chunhu1, QI Changguang2, ZUO Dianjun3, 4. Analysis and Calculation on Plastic Tube Outside of Plastic Tube Cast-in-Place Concrete Pile [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(9): 55-60.
[12]	ZHANG Min，ZHANG Hongxin，LEI Lin，LIU Yongzhen，ZHANG Lin. Experiment Study and Finite Element Analysis of Cantilever Beam Piezoelectric Energy Harvesting Device [J]. Journal of Chongqing Jiaotong University(Natural Science), 2017, 36(12): 115-120.
[13]	XIN Qin1, SUN Jishu1, REN Xiaojun2, ZHANG Xiaoran1. Overloading Effect on Concrete Pavement Deflection and Stress Analysis [J]. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(6): 30-33.
[14]	GUO Yinchuan,WANG Ligen, SHEN Aiqin, GU Pinpin, WAN Chenguang. 3D Finite Element Analysis of Temperature Field and Temperature Stress of Semi-rigid Asphalt Pavement Structure in Gansu Province [J]. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(3): 27-32.
[15]	WEN Chuanyong. Finite Element Analysis of Ship Collision Force of Wanzhou Yangtze River Bridge [J]. Journal of Chongqing Jiaotong University(Natural Science), 2016, 35(2): 17-20.