[1]徐浩,林红松,代丰,等.孟加拉帕德玛大桥无砟轨道结构型式适应性分析[J].高速铁路技术,2018,9(04):30-34.[doi:10.12098/j.issn.1674-8247.2018.04.007]
　XU Hao,LIN Hongsong,DAI Feng,et al.Structural Adaptability Analysis of Ballastless Track on Bangladesh Padma Bridge[J].HIGH SPEED RAILWAY TECHNOLOGY,2018,9(04):30-34.[doi:10.12098/j.issn.1674-8247.2018.04.007]
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孟加拉帕德玛大桥无砟轨道结构型式适应性分析()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
9卷
期数:
2018年04期
页码:
30-34
栏目:
出版日期:
2018-07-15

文章信息/Info

Title:
Structural Adaptability Analysis of Ballastless Track on Bangladesh Padma Bridge
文章编号:
1674—8247(2018)04—0030—05
作者:
徐浩;  林红松;  代丰;  颜华;  崔文勇
中铁二院工程集团有限责任公司, 成都 610031
Author(s):
XU Hao;  LIN Hongsong;  DAI Feng;  YAN Hua;  CUI Wenyong
China Railway Eryuan Engineering Group Co., Ltd., Chengdu 610031, China
关键词:
帕德玛大桥|无砟轨道|适应性|结构选型
Keywords:
Padma bridge|ballastless track|adaptability|structure type selection
分类号:
U213.2+1
DOI:
10.12098/j.issn.1674-8247.2018.04.007
文献标志码:
A
摘要:
为指导孟加拉帕德玛大桥桥上无砟轨道结构选型，本文结合孟加拉帕德玛大桥铁路连接线的工程特点，分析了其对无砟轨道的需求及选型原则，研究了现浇板式无砟轨道、单元板式无砟轨道、双块式无砟轨道、弹性支承块无砟轨道和长枕埋入式无砟轨道的优缺点及其对帕德玛大桥的适应性。结果表明：（1）帕德玛大桥桥上应优先选用预制轨道、半预制半现浇轨道结构；（2）现浇板式无砟轨道的扣件系统周围易出现裂纹，施工精度不易保证；（3）单元板式无砟轨道的水泥乳化沥青砂浆在重载运营条件下的适应性缺乏研究；（4）弹性支承块无砟轨道的轨道几何形位难以保持，双块式无砟轨道的道床板易出现裂纹；（5）长枕埋入式无砟轨道结构整体性好，有一定的工程实践，考虑轨道结构高度限制，推荐帕德玛大桥采用单层长枕埋入式无砟轨道，相关成果可为重载铁路桥上无砟轨道的研究和选型提供参考。
Abstract:
In order to guide the ballastless track structure type selection of Bangladesh Padma bridge, the requirement and type selection principles for ballastless track were analyzed combined with the engineering characteristics of railway connecting lines of Bangladesh Padma bridge. The merit and demerit of cast-in-situ slab ballastless track, unit slab ballastless track, double-block ballastless track, elastic supporting block ballastless track and embedded long sleeper ballastless track and the adaptability to the Padma bridge were studied. The results show that:(1) Padma bridge should choose the precast track and half precast and half cast-in-situ track structure preferentially. (2) Concrete around the fastener system suffers from cracks and the construction precision of cast-in-situ slab ballastless tack is not easy to be ensured. (3) As to unit slab ballastless track, the research of the adaptability of cement-emulsified asphalt mortar under heavy duty operating conditions is insufficient. (4) The track geometry of elastic supporting block ballastless track is difficult to keep, and the crack appears easily on roadbed slab of double-block type ballastless track. (5) Embedded long sleeper ballastless track has good integrity and engineering practice. Based on the limit height of track structure in Padma bridge, the single layer long sleeper embedded ballastless track was recommended. The research results could provide reference for the study and type selection of ballastless track on bridge of heavy load railway.

备注/Memo

备注/Memo:
作者简介：徐浩(1989-),男,工程师。基金项目：中铁二院科学技术研究计划（KYY2016052（16-18）），中国中铁股份有限公司科技开发计划（2016-重点-28）引文格式：徐浩, 林红松, 代丰, 等. 孟加拉帕德玛大桥桥上无砟轨道结构型式适应性分析 [J].高速铁路技术,2018,9(4)：30-34.XU Hao,LIN Hongsong,DAI Feng,et al. Structural Adaptability Analysis of Ballastless Track on Bangladesh Padma Bridge[J]. High Speed Railway Technology,2018,9(4):30-34.
更新日期/Last Update: 2018-08-28