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山东大学学报 (工学版) ›› 2019, Vol. 49 ›› Issue (4): 44-50.doi: 10.6040/j.issn.1672-3961.0.2017.550

• 土木工程 • 上一篇    下一篇

轨道交通U形梁底板横向抗裂及预应力布置研究

董旭1,3(),郭剑2,周海灿2,邓振全3,李树忱3   

  1. 1. 山东交通学院交通土建工程学院, 山东 济南 250357
    2. 中铁十四局集团第五工程有限公司, 山东 兖州 272117
    3. 山东大学岩土与结构工程研究中心, 山东 济南 250061
  • 收稿日期:2017-10-30 出版日期:2019-08-20 发布日期:2019-08-06
  • 作者简介:董旭(1983—)，男，山东济南人，讲师，博士，主要研究方向为结构分析及安全性评估研究.E-mail：dongxu512@126.com
  • 基金资助:
    国家自然科学基金资助项目(51179098);国家自然科学基金资助项目(51379113);山东省自然科学杰出青年基金资助项目(JQ201313);山东大学基本科研业务费资助项目(2014YQ005)

Transverse anti-cracking of bottom slab and layout of transverse pre-stressed tendon of rail transit U-shaped girder

Xu DONG1,3(),Jian GUO2,Haican ZHOU2,Zhenquan DENG3,Shuchen LI3   

  1. 1. School of Transportation and Civil Engineering, Shandong Jiaotong University, Jinan 250357, Shandong, China
    2. The Fifth Project Co., Ltd, China Railway Bureau 14 Group, Yanzhou 272117, Shandong, China
    3. Geotechnical and Structural Engineering Research Center, Shandong University, Jinan 250061, Shandong, China
  • Received:2017-10-30 Online:2019-08-20 Published:2019-08-06
  • Supported by:
    国家自然科学基金资助项目(51179098);国家自然科学基金资助项目(51379113);山东省自然科学杰出青年基金资助项目(JQ201313);山东大学基本科研业务费资助项目(2014YQ005)

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摘要：

针对目前轨道交通U形梁底板横向仅布置普通钢筋的构造特点,为了提高轨道交通U形梁底板横向抗裂性能和安全性能,以青岛地区某无砟轨道交通U形梁为研究对象,采用有限元仿真分析方法,研究U形梁底板横向抗裂和应力分布,并提出一种横向预应力布置方式。研究结果表明:跨中底板的横向拉应力主要由自重和设计荷载引起,而梁端底板的横向拉应力则受纵向预应力、自重等多因素影响。设计荷载作用下,结构最大横向拉应力为1.71 MPa;在1.3倍超载作用下,最大横向拉应力达到2.04 MPa,超过规范要求,结构安全储备较低,横向抗裂性能较弱。布置横向预应力后, U形梁跨中底板底面横向拉应力明显减小,达到-0.117 MPa,且拉应力的分布趋于均匀,结构安全性显著提高。研究结果可为U形梁底板抗裂及横向配筋设计提供借鉴。

关键词: U形梁, 底板抗裂, 有限元模型, 横向应力, 横向预应力, 配筋设计

Abstract:

Rail transit U-shaped girder had the structural characteristic of only arranging ordinary regular reinforcements in transverse direction of bottom slab. Based on a rail transit U-shaped girder project in Qingdao, in order to improve its safety and transverse anti-cracking performance, finite element analysis method was used to study the transverse anti-cracking and stress distribution of bottom slab of U-shaped girder. An arrangement method of U-shaped girder transverse pre-stressed tendons was put forward. The results showed that, the transverse tensile stress of bottom slab of midspan was mainly caused by self-weight and design load, while transverse tensile stress of girder ends was influenced by many factors. Under design load, maximum transverse stress of structure was 1.71 MPa, while applying 1.3 times overloading, maximum transverse stress reached 2.04 MPa, which was beyond code requirements. Safety margin of U-shaped girder was low and transverse crack resistance was weak. The proposed layout of transverse pre-stressed tendons effectively decreased transverse tensile stress in bottom slab of girder midspan to -0.117 MPa. The distribution of tensile stress became more uniform and structural safety was significantly improved. The research could provide a reference for transverse reinforcement design of U-shaped girder bottom slab.

Key words: U-shaped girder, bottom slab anti-cracking, FEA model, transverse stress, transverse pre-stressing force, reinforcement design

中图分类号: 

  • U233

图1

U形梁截面尺寸及预应力筋布置"

表1

纵向预应力筋设计参数"

钢束编号 类型 根数 布置位置 张拉控制应力/MPa
N1, N′1 Φs 15.2 7 腹板 1 246.2
N2, N′2 Φs 15.2 11 底板 1 339.2
N3, N′3 Φs 15.2 10 底板 1 339.2
N4, N′4 Φs 15.2 10 底板 1 339.2
N5, N′5 Φs 15.2 10 底板 1 339.2

图2

U形梁有限元模型"

图3

聚丙烯纤维混凝土应力应变关系曲线"

图4

国标B型车技术参数"

图5

双向弯矩最不利加载位置示意图"

图6

N2~N5和N′2~N′58组纵向预应力张拉后底板的横向应力云图"

图7

N1和N′1两组纵向预应力束张拉后底板的横向应力云图(半模型,单位:Pa)"

图8

设计荷载作用下U形梁跨中截面横向应力(S11)云图"

图9

超载阶段U形梁跨中横向应力云图"

图10

U形梁底板横向及纵向预应力布置俯视图"

图11

U形梁底板横向预应力布置横断面图"

图12

布置横向预应力后设计荷载作用下U形梁跨中截面横向应力云图"

1 王炎, 钱利芹, 肖林. 轨道交通预应力混凝土U形梁极限承载力试验研究[J]. 铁道建筑, 2015, (3): 20- 23.
WANG Yan , QIAN Liqin , XIAO Lin . Experimental research on ultimate bearing capacity of prestressed concrete U-shaped girder used in urban transit system[J]. Railway Engineering, 2015, (3): 20- 23.
2 李丽, 王振领, 张宇宁. 地铁高架槽形梁足尺模型破坏试验与空间分析研究[J]. 中国铁道科学, 2005, 26 (5): 31- 35.
doi: 10.3321/j.issn:1001-4632.2005.05.007
LI Li , WANG Zhenling , ZHANG Yuning . Fracture load test and spatial analysis for the full scale model of underground viaduct channel girder[J]. China Railway Science, 2005, 26 (5): 31- 35.
doi: 10.3321/j.issn:1001-4632.2005.05.007
3 秦子鹏, 田艳, 李刚, 等. BFRP层数对加固钢筋混凝土梁抗弯性能的影响[J]. 山东大学学报(工学版), 2017, 47 (1): 76- 83.
QIN Zipeng , TIAN Yan , LI Gang , et al. The influence of BFRP layers on the bending properties of the reinforced concrete beams[J]. Journal of Shandong University (Engineering Science), 2017, 47 (1): 76- 83.
4 徐勋, 肖林, 王炎, 等. 预应力混凝土槽形梁静力行为研究[J]. 铁道建筑, 2013, (1): 1- 4.
XU Xun , XIAO Lin , WANG Yan , et al. Study on static behavior of prestressed concrete trough girders[J]. Railway Engineering, 2013, (1): 1- 4.
5 苏建华. 地铁U型梁的静载破坏试验分析[J]. 特种结构, 2008, 25 (3): 84- 86.
doi: 10.3969/j.issn.1001-3598.2008.03.023
SU Jianhua . Analysis of static load failure test of metro U-beam[J]. Special Structure, 2008, 25 (3): 84- 86.
doi: 10.3969/j.issn.1001-3598.2008.03.023
6 庄严.城市轨道交通U型梁静载试验研究[D].成都:西南交通大学, 2011.
ZHUANG Yan. Static load test research on U-shape beam of urban rail transit[D]. Chengdu: Southwest Jiaotong University, 2011.
7 WU L , NIE J , LU J , et al. A new type of steel-concrete composite channel girder and its preliminary experimental study[J]. Journal of Constructional Steel Research, 2013, 85 (2): 163- 177.
8 郭佳陇, 王正中, 谌磊, 等. 薄壁深梁弯剪耦合应力分布规律[J]. 山东大学学报(工学版), 2008, 38 (3): 34- 39.
GUO Jialong , WANG Zhengzhong , CHEN Lei , et al. The stress distribution law of thin-walled deep beams with the shear-bending coupling[J]. Journal of Shandong University (Engineering Science), 2008, 38 (3): 34- 39.
9 王彬力.城市轨道交通U型梁系统结构受力行为研究[D].成都:西南交通大学, 2012.
WANG Binli. Research on U-girder system structure subjected to force in urban rail transit[D]. Chengdu: Southwest Jiaotong University, 2012.
10 RAJU V . Analysis of behaviour of U-girder bridge decks[J]. Acee International Journal on Transportation & Urban Development, 2011, 1 (1): 34- 38.
11 宋晓东, 吴定俊, 李奇. 考虑翘曲的轨道交通新型U形梁应力分析[J]. 结构工程师, 2011, 27 (5): 68- 72.
doi: 10.3969/j.issn.1005-0159.2011.05.012
SONG Xiaodong , WU Dingjun , LI Qi . Stress analysis of new U-shape girders for urban rail transit considering warping[J]. Structural Engineers, 2011, 27 (5): 68- 72.
doi: 10.3969/j.issn.1005-0159.2011.05.012
12 邵爱军, 吴代华. 基于能量法的槽型梁剪滞效应分析[J]. 武汉理工大学学报, 2003, 25 (3): 52- 55.
doi: 10.3321/j.issn:1671-4431.2003.03.016
SHAO Aijun , WU Daihua . Analysis of U-shaped beam′s shear lag effect based on the principle of energy[J]. Journal of Wuhan University of Technology, 2003, 25 (3): 52- 55.
doi: 10.3321/j.issn:1671-4431.2003.03.016
13 夏禾, 张楠, 张鸿儒, 等. 300 km/h高速铁路PC槽型梁动力试验研究[J]. 工程力学, 2003, 20 (6): 99- 105.
doi: 10.3969/j.issn.1000-4750.2003.06.018
XIA He , ZHANG Nan , ZHANG Hongru , et al. Experimental study of a prestressed trough bridge for high speed railway[J]. Engineering Mechanics, 2003, 20 (6): 99- 105.
doi: 10.3969/j.issn.1000-4750.2003.06.018
14 刘波, 王有志, 安俊江, 等. 车辆-路面空间耦合振动模型及其动力响应分析[J]. 山东大学学报(工学版), 2014, 44 (3): 83- 89.
LIU Bo , WANG Youzhi , AN Junjiang , et al. The spatial model of vehicle-pavement coupling vibration and its dynamic responses analysis[J]. Journal of Shandong University (Engineering Science), 2014, 44 (3): 83- 89.
15 吴亮秦, 吴定俊, 李奇. 城市轨道交通薄壁槽形梁车桥动力特性试验研究[J]. 中国铁道科学, 2011, 32 (4): 31- 37.
WU Liangqin , WU Dingjun , LI Qi . Experimental study on vehicle-bridge dynamic characteristics of thin-walled trough girder bridge for urban rail transit[J]. China Railway Science, 2011, 32 (4): 31- 37.
16 孙晓静, 李术才, 张敦福, 等. 车辆-钢轨-钢弹簧浮置板道床耦合系统振动特性分析[J]. 山东大学学报(工学版), 2011, 41 (3): 126- 130.
SUN Xiaojing , LI Shucai , ZHANG Dunfu , et al. Vibration characteristic analysis of a vehicle-rail-steel spring floating slab track coupling system[J]. Journal of Shandong University (Engineering Science), 2011, 41 (3): 126- 130.
17 王彬力, 蒲黔辉, 白光亮. 城市轨道交通U型梁动力性能研究与实验验证[J]. 地震工程与工程振动, 2011, 31 (6): 174- 180.
WANG Binli , PU Qianhui , BAI Guangliang . Dynamic analysis and experimental verification of U-girder for urban rail transit[J]. Journal of Earthquake Engineering and Engineering Vibration, 2011, 31 (6): 174- 180.
18 梁宁慧.多尺度聚丙烯纤维混凝土力学性能试验和拉压损伤本构模型研究[D].重庆:重庆大学, 2014.
LIANG Ninghui. The mechanics performance test of multi-scale polypropylene fiber concrete and the study of tension and compression damage constitutive model[D]. Chongqing: Chongqing University, 2014.
19 中华人民共和国住房和城乡建设部.混凝土结构设计规范: GB 50010—2010[S].北京:中国建筑工业出版社, 2010.
20 程东辉, 叶旭, 张力滨. 预应力CFRP布加固负载混凝土梁力学性能分析[J]. 土木工程学报, 2013, 46 (增刊1): 319- 328.
CHENG Donghui , YE Xu , ZHANG Libin . Research of mechanical properties on loaded concrete beam reinforced with prestressed CFRP sheet[J]. China Civil Engineering Journal, 2013, 46 (Suppl.1): 319- 328.
21 许锋. CFRP筋体外预应力加固钢筋混凝土梁受弯性能研究[D].武汉:武汉大学, 2014.
XU Feng. Flexural performance of reinforced concrete beams strengthened by external prestressing CFRP tendons[D]. Wuhan: Wuhan University, 2014.
22 中华人民共和国住房和城乡建设部.地铁设计规范: GB 50157—2013 [S].北京:中国建筑工业出版社, 2013.
23 中华人民共和国铁道部.铁路桥涵钢筋混凝土和预应力混凝土结构设计规范: TB10002.3—2005[S].北京:中国铁道出版社, 2005.
24 李增锋, 庄一舟, 程俊峰, 等. 横向预应力对装配整体式空心板桥纵向抗裂性能的影响[J]. 水利与建筑工程学报, 2017, 15 (3): 127- 133.
doi: 10.3969/j.issn.1672-1144.2017.03.026
LI Zengfeng , ZHUANG Yizhou , CHENG Junfeng , et al. Impacts of transverse prestress on cracking resistance of assembly type hollow slab bridge[J]. Journal of Water Resources and Architectural Engineering, 2017, 15 (3): 127- 133.
doi: 10.3969/j.issn.1672-1144.2017.03.026
25 马庆华, 马慧娟, 方金强. 公路桥梁箱梁悬臂施工中的预应力作用及剪力滞效应研究[J]. 公路工程, 2017, 42 (5): 211- 216.
doi: 10.3969/j.issn.1674-0610.2017.05.042
MA Qinghua , MA Huijuan , FANG Jinqiang . Study on prestressing effect and shear lag effect in cantilever construction of box girder of highway bridge[J]. Highway Engineering, 2017, 42 (5): 211- 216.
doi: 10.3969/j.issn.1674-0610.2017.05.042
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