|Table of Contents|

Effect of pier temperature gradient on longitudinal force of CRTS Ⅱ slab ballastless track on bridge(PDF)

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

Issue:
2020年04期
Page:
80-90
Research Field:
道路与铁道工程
Publishing date:

Info

Title:
Effect of pier temperature gradient on longitudinal force of CRTS Ⅱ slab ballastless track on bridge
Author(s):
ZHANG Peng-fei LIAN Xi-ni GUI Hao LEI Xiao-yan
Engineering Research Center of Railway Environmental Vibration and Noise of Ministry of Education, East China Jiaotong University, Nanchang 330013, Jiangxi, China
Keywords:
high-speed railway CRTS Ⅱ slab ballastless track continuous welded rail on bridge pier top displacement longitudinal force longitudinal displacement
PACS:
U213.213
DOI:
10.19818/j.cnki.1671-1637.2020.04.006
Abstract:
For the longitudinal additional force and deformation of China railway track system(CRTS)Ⅱ slab ballastaless track on bridge caused by the pier temperature gradient, the spatial coupling models of CRTS Ⅱ slab ballastless track continuous welded rails(CWR)on the multi-span simply supported beam bridge and long-span continuous beam bridge were established by using the finite element method based on the beam-slab-rail interacting principle. Both the dimensions and mechanical properties of main and detail structures, such as rail, track slab, cement asphalt(CA)mortar, base plate and bridge, were considered in detail. The longitudinal displacement of pier top caused by the action of longitudinal temperature difference of pier was calculated by the unit load method, to analyze the distribution rules of longitudinal force and displacement of ballastless CWR on the bridge under the influence of displacement of pier top. Analysis result shows that when the uniform displacement of each pier top occurs, the distribution laws and the maximum values of longitudinal force of ballastless track CWR on the multi-span simply supported beam bridge and long-span continuous beam bridge are basically the same, and increase linearly with the increase of uniform displacement of pier top. The peak relative displacement between the rail and track slab appears at the ends of abutment on both sides, the anchorage structures behind the abutments, tops of the second and last spans fixed support piers. When the uniform displacement ofpier top is 5 mm, the maximum longitudinal forces of rails on the multi-span simply supported beam bridge and long-span continuous beam bridge are 79.62 and 79.54 kN, respectively, the maximum longitudinal displacements are 4.94 and 4.91 mm, respectively, and the maximum relative displacement between the rail and track slab is 0.23 mm. When the uneven displacement occurs at the top of each pier, the longitudinal force of rail and the relative displacement between the rail and track slab change abruptly at the displacement difference between adjacent piers. The longitudinal force of consolidation mechanism on the multi-span simply supported beam bridge is greater than that of long-span continuous beam bridge. For high pier bridges, it is necessary to pay more attention to the relative displacement between the rail and track slab at the maximum height difference between adjacent piers, the relative displacement between the base plate and bridge and the longitudinal force of consolidation mechanism. 1 tab, 18 figs, 31 refs.

References:

[1] 戴公连,葛 浩,刘文硕,等.实测温度下大跨度桥上纵连无砟轨道受力研究[J].铁道工程学报,2017,34(5):26-31,93.
DAI Gong-lian, GE Hao, LIU Wen-shuo, et al. Analysis of longitudinally connected ballastless track on the high-speed railway long-span bridge based on the actual measured temperature[J]. Journal of Railway Engineering Society, 2017, 34(5): 26-31, 93.(in Chinese)
[2] 蔡小培,高 亮,孙汉武,等.桥上纵连板式无砟轨道无缝线路力学性能分析[J].中国铁道科学,2011,32(6):28-33.
CAI Xiao-pei, GAO Liang, SUN Han-wu, et al. Analysis on the mechanical properties of longitudinally connected ballastless track continuously welded rail on bridge[J]. China Railway Science, 2011, 32(6): 28-33.(in Chinese)
[3] 陈 嵘,邢 俊,谢铠泽,等.温度荷载下纵连式无砟轨道梁轨耦合作用规律[J].铁道工程学报,2017,34(3):15-21.
CHEN Rong, XING Jun, XIE Kai-ze, et al. The continuous-slab-track coupling laws between the bridge and track under temperature loads[J]. Journal of Railway Engineering Society, 2017, 34(3): 15-21.(in Chinese)
[4] 潘 鹏.制动荷载作用下桥上无砟轨道动力特性分析[D].南昌:华东交通大学,2017.
PAN Peng. Dynamic characteristics analysis of ballastless track on bridge under braking load[D]. Nanchang: East China Jiaotong University, 2017.(in Chinese)
[5] CHEN Bo-jing, CAI Xiao-pei, SHI Xiao-bo. Study on mechanical properties and field monitoring of ballastless CWR on the bridge in high-speed railway[J]. Applied Mechanics and Materials, 2013, 361-363: 1449-1454.
[6] 徐庆元,张旭久.高速铁路博格纵连板桥上无砟轨道纵向力学特性[J].中南大学学报(自然科学版),2009,40(2):526-532.
XU Qing-yuan, ZHANG Xu-jiu. Longitudinal forces characteristics of Bogl longitudinal connected ballastless track on high-speed railway bridge[J]. Journal of Central South University(Science and Technology), 2009, 40(2): 526-532.(in Chinese)
[7] 吴青松,任娟娟,刘学毅,等.用于铺设Ⅱ型板式轨道的大跨连续梁桥合理温度跨度研究[J].铁道科学与工程学报,2016,13(3):414-422.
WU Qing-song, REN Juan-juan, LIU Xue-yi, et al. Research on the critical expansion length of large span continuous beam bridge for CRTS Ⅱ slab track[J]. Journal of Railway Science and Engineering, 2016, 13(3): 414-422.(in Chinese)
[8] 李秋义,孙 立.桥墩温差荷载引起的桥上无缝线路钢轨附加力[J].中国铁道科学,2007,28(4):50-54.
LI Qiu-yi, SUN Li. Additional longitudinal force of CWR track on bridge caused by temperature difference between one side and another side of pier[J]. China Railway Science, 2007, 28(4): 50-54.(in Chinese)
[9] 赵国堂,高 亮,赵 磊,等.CRTS Ⅱ型板式无砟轨道板下离缝动力影响分析及运营评估[J].铁道学报,2017,39(1):1-10.
ZHAO Guo-tang, GAO Liang, ZHAO Lei, et al. Analysis of dynamic effect of gap under CRTS Ⅱtrack slab and operation evaluation[J]. Journal of the China Railway Society, 2017, 39(1): 1-10.(in Chinese)
[10] 魏 强,赵国堂,蔡小培.CRTS Ⅱ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 CRTS Ⅱ[J]. Journal of the China Railway Society, 2013, 35(7): 90-95.(in Chinese)
[11] 王继军,江 成,赵 磊,等.高铁单元板式无砟轨道大跨梁端适应性对比[J].铁道工程学报,2018,35(5):18-23,87.
WANG Ji-jun, JIANG Cheng, ZHAO Lei, et al. The adaptive contrast research on the slab track of high-speed railway in long span bridge end[J]. Journal of Railway Engineering Society, 2018, 35(5): 18-23, 87.(in Chinese)
[12] 谢铠泽,王 平,徐井芒,等.桥上单元板式无砟轨道无缝线路的适应性[J].西南交通大学学报,2014,49(4):649-655.
XIE Kai-ze, WANG Ping, XU Jing-mang, et al. Adaptability of continuous welded rail of unit slab non-ballast track on bridges[J]. Journal of Southwest Jiaotong University, 2014, 49(4): 649-655.(in Chinese)
[13] DAI Gong-lian, LIU Wen-shuo. Applicability of small resistance fastener on long-span continuous bridges of high-speed railway[J]. Journal of Central South University, 2013, 20(5): 1426-1433.
[14] YAN Bin, DAI Gong-lian, GUO Wen-hua, et al. Longitudinal force in continuously welded rail on long-span tied arch continuous bridge carrying multiple tracks[J]. Journal of Central South University, 2015, 22(5): 2001-2006.
[15] PAPP H, LIEGNER N. Investigation of internal forces in the rail due to the interaction of CWR tracks and steel railway bridges with ballasted track superstructure[J]. Pollack Periodica, 2016, 11(2): 65-74.
[16] DAI Gong-lian, YAN Bin. Longitudinal forces of continuously welded track on high-speed railway cable-stayed bridge considering impact of adjacent bridges[J]. Journal of Central South University, 2012, 19(8): 2348-2353.
[17] 高碧波.高墩大跨度连续刚构温度场与温度荷载模式试验研究[D].上海:同济大学,2008.
GAO Bi-bo. The study on temperature field and mode of temperature gradient of continuous rigid frame bridge with high piers and long spans[D]. Shanghai: Tongji University, 2008.(in Chinese)
[18] 张运波.薄壁空心高墩的温度效应及其对稳定性影响的研究[D].北京:中国铁道科学研究院,2011.
ZHANG Yun-bo. Studies on temperature effects and its influence on stability for high pier with thin-walled hollow sections[D]. Beijing: China Academy of Railway Sciences, 2011.(in Chinese)
[19] 刘 舟.收缩徐变和日照温差对高铁连续梁桥梁轨纵向力影响研究[D].长沙:中南大学,2012.
LIU Zhou. Track-bridge longitudinal force of continuous bridge on high-speed railway with the shrinkage and creep and sunshine temperature difference[D]. Changsha: Central South University, 2012.(in Chinese)
[20] XIE Kai-ze, XING Jun, WANG Li, et al. Effect of temperature difference load of 32 m simply supported box beam bridge on track vertical irregularity[J]. Journal of Modern Transportation, 2015, 23(4): 262-271.
[21] CHEN Zui, XIAO Jie-ling, LIU Xiao-kai, et al. Effects of initial up-warp deformation on the stability of the CRTS Ⅱ slab track at high temperatures[J]. Journal of Zhejiang University—Science A(Applied Physics and Engineering), 2018, 19(12): 939-950.
[22] SONG Xiao-lin, ZHAO Chun-fa, ZHU Xiao-jia. Temperature-induced deformation of CRTS Ⅱ slab track and its effect on track dynamical properties[J]. Science China(Technological Sciences), 2014, 57(10): 1917-1924.
[23] LOU Ping, ZHU Jun-pu, DAI Gong-lian, et al. Experimental study on bridge-track system temperature actions for Chinese high-speed railway[J]. Archives of Civil and Mechanical Engineering, 2018, 18(2): 451-464.
[24] 刘婷林,代先星,肖杰灵,等.温度梯度对高墩桥上无缝线路的影响分析[J].铁道建筑,2014(4):121-124.
LIU Ting-lin, DAI Xian-xing, XIAO Jie-ling, et al. Analysis of the effect of temperature gradient on CWR on high pier bridge[J]. Railway Engineering, 2014(4): 121-124.(in Chinese)
[25] 张亚爽,胡志鹏,马旭峰,等.高墩水平温差对连续刚构桥上无缝线路的影响[J].铁道标准设计,2014,58(11):20-23,27.
ZHANG Ya-shuang, HU Zhi-peng, MA Xu-feng, et al. The influence of high piers with horizontal temperature difference on CWR on the continuous rigid frame bridge[J]. Railway Standard Design, 2014, 58(11): 20-23, 27.(in Chinese)
[26] 罗华朋,马旭峰,肖杰灵,等.桥墩温度荷载对高墩大跨桥上无砟轨道无缝线路的影响研究[J].铁道建筑,2015(6):127-131.
LUO Hua-peng, MA Xu-feng, XIAO Jie-ling, et al. Study on the effect of pier temperature load on CWR of ballastless track on long-span bridge with high piers[J]. Railway Engineering, 2015(6): 127-131.(in Chinese)
[27] 罗华朋,邢 俊,杨 凯,等.桥墩温度梯度对高墩大跨桥上无砟轨道影响研究[J].铁道标准设计,2015,59(8):26-29.
LUO Hua-peng, XING Jun, YANG Kai, et al. Effects of pier temperature gradient on ballastless track of long-span bridge[J]. Railway Standard Design, 2015, 59(8): 26-29.(in Chinese)
[28] 戴公连,唐 宇,梁金宝.高速铁路高墩极值温度变形研究[J].铁道学报,2018,40(7):109-114.
DAI Gong-lian, TANG Yu, LIANG Jin-bao. Study on extreme temperature deformation of tall-pier for high-speed railway[J]. Journal of the China Railway Society, 2018, 40(7): 109-114.(in Chinese)
[29] 张鹏飞,桂 昊,高 亮,等.桥上CRTS Ⅱ型板式无砟轨道制动力影响因素分析[J].铁道工程学报,2018,35(7):30-35,108.
ZHANG Peng-fei, GUI Hao, GAO Liang, et al. Analysis of influencing factors of braking force of CRTS Ⅱ slab track on bridge[J]. Journal of Railway Engineering Society, 2018, 35(7): 30-35, 108.(in Chinese)
[30] 刘 成,李 帅,谢铠泽,等.纵连板式轨道在墩台位移作用下梁轨相互作用规律研究[J].铁道标准设计,2016,60(12):8-12.
LIU Cheng, LI Shuai, XIE Kai-ze, et al. Beam and track interaction of continuous-slab-track subject to pier displacement[J]. Railway Standard Design, 2016, 60(12): 8-12.(in Chinese)
[31] 田仲初,曹少辉,张 恒,等.温度对空心薄壁高墩垂直度的影响分析[J].公路与汽运,2010(5):125-128.
TIAN Zhong-chu, CAO Shao-hui, ZHANG Heng, et al. Analysis of the effect of temperature on verticality of hollow thin-walled high piers[J]. Highways and Automotive Applications, 2010(5): 125-128.(in Chinese)

Memo

Memo:
-
Last Update: 2020-08-20