|Table of Contents|

Effects of post-pouring belt void of base slab on track structure and train operation of CRTSⅡ slab track(PDF)

《交通运输工程学报》[ISSN:1671-1637/CN:61-1369/U]

Issue:
2019年03期
Page:
71-78
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Effects of post-pouring belt void of base slab on track structure and train operation of CRTSⅡ slab track
Author(s):
YANG Rong-shan1; 2;  WANG Jie1; 2;  JIANG Heng-chang1; 2;  CHEN Shuai1; 2;  DU Jin-xin1; 2
(1. School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, Sichuan, China; 2. Key Laboratory of High-Speed Railway Engineering of Ministry of Education, Southwest Jiaotong University, Chengdu 610031, Sichuan, China)
Keywords:
railway engineering;  slab track;  post-pouring belt;  ultra-high pressure water jet method;  track structure;  vertical displacement;  wheel-rail vertical force
PACS:
U213.212
DOI:
-
Abstract:
Under the uninterrupted train running condition, the post-pouring belt of CRTSⅡ slab track base slab on the bridge was repaired by using the ultra-high pressure water jet method. The statics calculation model of CRTSⅡ slab track structure was established, and the effects of post-pouring belt with different void length on the vertical displacements of rail and track slab and the tensile stress of track slab were analyzed. The vehicle-track coupling dynamics calculation model was established, and the influences of normal running on track structure, running safety and comfort were analyzed when the complete void length of the post-pouring belt of base slab was 1.0 m. Calculation result shows that under the action of 1.5 times static wheel load, the vertical displacements of rail and track slab increase with the increase of the void length of post-pouring belt. When the complete void length of post-pouring belt is 1.0 m, the vertical displacements of rail and track slab both increase by 0.03 mm, so the complete void has less effect on vertical displacements. When the void length of post-pouring belt is 0.7, 0.8, 0.9 and 1.0 m, respectively, the maximum tensile stress of track slab is 0.96, 1.12, 1.18 and 1.22 MPa, respectively. When the post-pouring belt completely voids, the maximum tensile stress is less than the designed tensile strength of 1.96 MPa, and the track slab will not crack. When the train speed is 300 km·h-1 and the complete void length of post-pouring belt is 1.0 m, the maximum vertical displacements of rail and track slab are 0.91 and 0.32 mm, and less than the reference values of 1.5 and 0.4 mm in Technical Regulations for Dynamic Acceptance for High-Speed Railways Construction(TB 10761—2013), which shows that the normal running after post-pouring belt voids can not cause great influence on the track structure. When the complete void of post-pouring belt occures, the vertical acceleration of track slab is about 3 times of the value under the normal condition, which indicates that normal running will increase the vibration intensity of the lower foundation. The statics and dynamics analysis results show that using the ultra-high pressure water jet method to repair the post-pouring belt of base slab can allow the train travel at normal speeds. 1 tab, 11 figs, 31 refs.

References:

[1] 何华武.京津城际铁路科技创新[J].铁道建筑技术,2009(2):1-12.
HE Hua-wu. Science and technology innovations on Beijing-Tianjin Inter-City Railway[J]. Railway Construction Technology, 2009(2): 1-12.(in Chinese)
[2] 张鹏飞,桂 昊,高 亮,等.桥上CRTSⅡ型板式无砟轨道制动力影响因素分析[J].铁道工程学报,2018(7):30-35,108.
ZHANG Peng-fei, GUI Hao, GAO Liang, et al. Analysis of influencing factors of braking force of CRTSⅡ slab track on bridge[J]. Journal of Railway Engineering Society, 2018(7): 30-35, 108.(in Chinese)
[3] 魏 强,赵国堂,蔡小培.CRTSⅡ型板式轨道台后锚固结构研究[J].铁道学报,2013,35(7):90-95.
WEI Qiang, ZHAO Guo-tang, CAI Xiao-pei. Study on anchor structure behind the abutment for slab track CRTSⅡ[J]. Journal of the China Railway Society, 2013, 35(7): 90-95.(in Chinese)
[4] 姜子清,王继军,江 成.桥上CRTSⅡ型板式无砟轨道伤损研究[J].铁道建筑,2014(6):117-121.
JIANG Zi-qing, WANG Ji-jun, JIANG Cheng. Research of CRTSⅡ slab ballastless track damage on bridge[J]. Railway Engineering, 2014(6): 117-121.(in Chinese)
[5] DONG Wei, ZHOU Xiang-ming, WU Zhi-min. A fracture
mechanics-based method for prediction of cracking of circular and elliptical concrete rings under restrained shrinkage[J]. Engineering Fracture Mechanics, 2014, 131: 687-701.
[6] 朱乾坤.高速铁路简支梁桥与CRTSⅡ型板式无砟轨道相互作用研究[D].长沙:中南大学,2013.
ZHU Qian-kun. Interaction between simply supported beams and CRTSⅡslab ballastless track[D]. Changsha: Central South University, 2013.(in Chinese)
[7] 郑先奇.京沪高速铁路CRTSⅡ型板式无砟轨道长桥底座板施工技术[J].铁道标准设计,2013(2):38-43.
ZHENG Xian-qi.Construction technology of base board of CRTSⅡ slab ballastless track upon long bridge on Beijing-Shanghai High-Speed Railway[J]. Railway Standard Design, 2013(2): 38-43.(in Chinese)
[8] HOSSAIN A B, WEISS J. Assessing residual stress development and stress relaxation in restrained concrete ring specimens[J]. Cement and Concrete Composites, 2004, 26(5): 531-540.
[9] 刘全青.CRTSⅡ型板式无砟轨道底座板施工关键技术[J].石家庄铁道大学学报(自然科学版),2013,26(增):229-232,235.
LIU Quan-qing. Key technology of CRTSⅡ slab ballastless track base plate construction[J]. Journal of Shijiazhuang Tiedao University(Natural Science), 2013, 26(S): 229-232, 235.(in Chinese)
[10] 张亚爽.简支梁长桥上CRTSⅡ型板式无砟轨道底座板施工受力分析[D].成都:西南交通大学,2014.
ZHANG Ya-shuang. Mechanic analysis for the concrete roadded of CRTSⅡ slab track during construction on the long bridge of simply supported beam[D]. Chengdu: Southwest Jiaotong University.(in Chinese)
[11] 赵坪锐,胡 佳,刘 观.长大桥梁上CRTSⅡ型板式轨道底座板施工工艺优化检算[J].铁道建筑,2014(6):142-145.
ZHAO Ping-rui, HU Jia, LIU Guan. Optimization calculation of construction technology of CRTSⅡ slab track base plate on long bridge[J]. Railway Engineering, 2014(6): 142-145.(in Chinese)
[12] 刘 微.CRTSⅡ型板式无砟轨道支承层断裂影响及修复效果研究[D].北京:北京交通大学,2014.
LIU Wei. Research on the influence and repairing effect of hydraulically bounded layer fracture of CRTSⅡ slab track[D]. Beijing: Beijing Jiaotong University, 2014.(in Chinese)
[13] 黄传岳.CRTSⅡ型板式无砟轨道支承层斜裂伤损修复方法[J].铁道建筑,2018,58(11):139-141.
HUANG Chuan-yue. Repairing method of supporting layer inclined crack damage of CRTSⅡ slab ballastless track[J]. Railway Engineering, 2018, 58(11): 139-141.(in Chinese)
[14] 吴绍利,王 鑫,吴智强,等.高速铁路无砟轨道结构病害类型及快速维修方法[J].中国铁路,2013(1):42-44.
WU Shao-li, WANG Xin, WU Zhi-qiang, et al. High-speed railway ballastless track structure disease type and rapid maintenance method[J]. Chinese Railways, 2013(1): 42-44.(in Chinese)
[15] 景 璞,李 飞.CRTSⅡ型板式无砟轨道病害修补方案研究[J].铁道技术监督,2017,45(11):22-29.
JING Pu, LI Fei. Study on patching scheme of CRTSⅡ slab ballastless track diseases[J]. Railway Quality Control, 2017,45(11): 22-29.(in Chinese)
[16] ZHAO Jing, SONG Ting. Fiber-reinforced rapid repair material for concrete pavement[J]. Advanced Materials Research, 2010, 168-170: 870-874.
[17] 汪梨园.高速铁路运营期间CRTSⅡ型板式无砟轨道底座板断裂修复技术[J].铁道建筑技术,2014(7):44-47,74.
WANG Li-yuan. Repair technologies for the base plate fracture of CRTSⅡ slab ballastless track in the operation of high-speed railway[J]. Railway Construction Technology, 2014(7): 44-47, 74.(in Chinese)
[18] 吕建华,杨冀超,贾金民,等.高速铁路CRTSⅡ型板式无砟轨道底座板修复技术[J].中国铁路,2014(4):77-80.
LYU Jian-hua, YANG Ji-chao, JIA Jin-min, et al. High-speed railway CRTSⅡ ballastless track base plate repair technology[J]. Chinese Railways,2014(4): 77-80.(in Chinese)
[19] 柴 强.高速铁路CRTSⅡ型板式无砟轨道养护维修技术研究[D].北京:中国铁道科学研究院,2014.
CHAI Qiang. Research on maintenance techniques of CRTSⅡ slab ballastless track system on high speed railway[D]. Beijing: China Academy of Railway Sciences, 2014.(in Chinese)
[20] 周明岩.严寒地区高速铁路板式无砟轨道养护维修技术研究[D].北京:中国铁道科学研究院,2017.
ZHOU Ming-yan. Study on maintenance and repair technology of slab track of high speed railway in cold area[D]. Beijing: China Academy of Railway Sciences, 2017.(in Chinese)
[21] BODNÁROVÁ L, SITEK L, HELA R, et al. New potential of highspeed water jet technology for renovating concrete structures[J]. Slovak Journal of Civil Engineering, 2011, 19(2): 1-7.
[22] MOMBER A, LOUIS H. On the behaviour of concrete under water jet impingement[J]. Materials and Structures, 1994, 27(167): 153-156.
[23] WU Gang, SONG Jia-hui, HOU Ke-bang, et al. Application of high-pressure water jet in mine[J]. Advanced Materials Research, 2014, 1033/1034: 1323-1326.
[24] TIAN Chang-liu, CHENG Xue-li, WANG Wei. Experimental study on rock breaking with impacting water jet by modulation of chaos[J]. Advanced Materials Research, 2012, 535-537: 1751-1754.
[25] HAM Y B, KWON S K, NOH J H, et al. Development of road stripe removing equipment using high-pressure water jet[J]. Automation in Construction, 2006, 15(5): 578-588.
[26] CHEN Hai-long, LI Zhao-min, GAO Zhi-han, et al. Numerical investigation of rock breaking mechanisms by high pressure water jet[J]. Procedia Engineering, 2015, 126: 295-299.
[27] 陈 俊.超高性能混凝土(UHPC)高压水射流凿毛处理及修补材料研究[D].长沙:湖南大学,2015.
CHEN Jun. Research on artificial chiseling with high pressure water jet and repair materials of ultra-high performance concrete[D]. Changsha: Hunan University, 2015.(in Chinese)
[28] ZHAI Wan-ming, WANG Kai-yun, CAI Cheng -biao. Fundamentals of vehicle-track coupled dynamics[J]. Vehicle System Dynamics, 2009, 47(11): 1349-1376.
[29] 蔡成标.无碴轨道动力学理论及应用[J].西南交通大学学报,2007,42(3):255-261.
CAI Cheng-biao. Dynamics of ballastless track and its application[J]. Journal of Southwest Jiaotong University, 2007, 42(3): 255-261.(in Chinese)
[30] 朱胜阳.高速铁路无砟轨道结构伤损行为及其对动态性能的影响[D].成都:西南交通大学,2015.
ZHU Sheng-yang. Damage behavior of high-speed railway ballastless track and its effect on structure dynamic performance[D]. Chengdu: Southwest Jiaotong University, 2015.(in Chinese)
[31] 任娟娟,徐家铎,田根源,等.客货共线无砟轨道轮轨力统计特征研究[J].工程力学,2018,35(2):239-248.
REN Juan-juan, XU Jia-duo, TIAN Gen-yuan, et al. Field test and statistical characteristics of wheel-rail force for slab track with passenger and freight traffic[J]. Engineering Mechanics, 2018, 35(2): 239-248.(in Chinese)

Memo

Memo:
-
Last Update: 2019-06-27