[1]杨星智,冀胜利,李曙光,等.高速铁路隧道轨道板上拱切割落道施工技术[J].高速铁路技术,2024,15(03):110-114.[doi:10.12098/j.issn.1674-8247.2024.03.020]
 YANG Xingzhi,JI Shengli,LI Shuguang,et al.A Technology for Upwarped Track Slab Cutting and Track Lowering in High-speed Railway Tunnels[J].HIGH SPEED RAILWAY TECHNOLOGY,2024,15(03):110-114.[doi:10.12098/j.issn.1674-8247.2024.03.020]
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高速铁路隧道轨道板上拱切割落道施工技术()
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《高速铁路技术》[ISSN:1674-8247/CN:51-1730/U]

卷:
15卷
期数:
2024年03期
页码:
110-114
栏目:
施工技术
出版日期:
2024-06-20

文章信息/Info

Title:
A Technology for Upwarped Track Slab Cutting and Track Lowering in High-speed Railway Tunnels
文章编号:
1674-8247(2024)03-0110-05
作者:
杨星智123冀胜利2李曙光2何炳兴2刘博2赵小飞2
1.中铁二十局集团第三工程有限公司, 重庆 400060;2.中铁二十局集团有限公司, 西安 710016;3.中国地质大学(武汉)工程学院, 武汉 430074
Author(s):
YANG Xingzhi123JI Shengli2LI Shuguang2HE Bingxing2LIU Bo2ZHAO Xiaofei2
1.The Third Engineering Co. ,Ltd. of China Railway Twentieth Bureau Group Co. ,Ltd. ,Chongqing 400060 , China;2.China Railway Twentieth Bureau Group Co. ,Ltd. ,Xi’an 710016 ,China;3.China University of Geosciences (Wuhan),Wuhan 430074 ,China
关键词:
隧道轨道板绳锯切割仰拱填充落道姿态调整
Keywords:
tunneltrack slabwire saw cuttinginvert infilltrack loweringattitude adjustment
分类号:
U457.2;U216
DOI:
10.12098/j.issn.1674-8247.2024.03.020
文献标志码:
A
摘要:
某隧道仰拱在地质构造应力及承压富水环境的综合作用下,CRTSⅠ型双块式无砟轨道道床板出现上拱变形和平面移位,最大上拱变形值达47.1mm,最大横向移位达10mm,超出常规扣件可精调的范围。本文提出了一种利用绳锯切割仰拱填充(即找平层),以实现道床板与下部隧道结构分离落道的施工方法,利用千斤顶、水平顶推装置、气垫等方式进行道床板平面位置或高程姿态调整。结果表明:该技术避免了因道床板及仰拱填充层大拆大换造成的行车中断,降低了拆除和重建成本,保证了无砟轨道结构整体性受力,经济、社会效益显著。研究成果可为类似道床板线性大尺度偏位处理提供借鉴。
Abstract:
The tunnel invert underlain by geostress and hydrostatic pressure in water-bearing strata has led to upwarping deformation and planar displacement of CRTSⅠbi-block ballastless track bed slab,with maximum upwarping deformation reaching 47. 1 mm and maximum lateral shift of 10 mm,surpassing the adjustable range of conventional fasteners. This paper presented a technology utilizing wire saw cutting of the invert infill(levelling layer)to facilitate separation and track lowering of the track bed from the underlying tunnel structure,incorporating jacks,horizontal push devices,air cushions,and other means for planar position or elevation adjustments of the track bed. Results demonstrate that this technology circumvents the need for disruptive and costly dismantling and reconstruction associated with extensive track bed and invert infill replacement,preserves the integral load-bearing capacity of the ballastless track structure,and yields significant economic and social benefits. The findings offer valuable references for addressing large-scale linear displacements in similar track bed scenarios.

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备注/Memo

备注/Memo:
收稿日期:2022-09-30
作者简介:杨星智(1987-),男,高级工程师。
更新日期/Last Update: 2024-06-30