高速铁路技术
高速鐵路技術
고속철로기술
HIGH SPEED RAILWAY TECHNOLOGY
2014年
1期
53-56,77
,共5页
线路平纵断面%隧道中线%施工偏差%方法%原则
線路平縱斷麵%隧道中線%施工偏差%方法%原則
선로평종단면%수도중선%시공편차%방법%원칙
horizontal and longitudinal section of line%tunnel central line%deviation in construction%method%principle
铁路隧道中线的施工偏差主要为横向偏差和高程偏差。其中横向偏差是最为多发的一种偏差情况,一旦这种偏差超过一定范围,且未及时采取有效措施进行修正,极易造成隧道实际施工中线偏离设计中线,导致内轮廓侵入设计的建筑限界,从而给行车带来极大安全隐患。中线偏差过大时,须炸毁大段衬砌方能满足相关规范要求,造成返工浪费、工期延误,社会影响极大。文章针对铁路隧道中线施工偏差问题,结合工程实例,从线路、隧道及测量等专业的角度,在保证线路和隧道基本使用功能、运营安全以及便于维护的前提下,对隧道中线横向偏差进行阐述,探讨通过调整线路平面、纵断面解决偏差的方法,提出了解决类似问题的基本原则。同时,警示和提醒施工以及管理单位如何避免类似问题的出现。
鐵路隧道中線的施工偏差主要為橫嚮偏差和高程偏差。其中橫嚮偏差是最為多髮的一種偏差情況,一旦這種偏差超過一定範圍,且未及時採取有效措施進行脩正,極易造成隧道實際施工中線偏離設計中線,導緻內輪廓侵入設計的建築限界,從而給行車帶來極大安全隱患。中線偏差過大時,鬚炸燬大段襯砌方能滿足相關規範要求,造成返工浪費、工期延誤,社會影響極大。文章針對鐵路隧道中線施工偏差問題,結閤工程實例,從線路、隧道及測量等專業的角度,在保證線路和隧道基本使用功能、運營安全以及便于維護的前提下,對隧道中線橫嚮偏差進行闡述,探討通過調整線路平麵、縱斷麵解決偏差的方法,提齣瞭解決類似問題的基本原則。同時,警示和提醒施工以及管理單位如何避免類似問題的齣現。
철로수도중선적시공편차주요위횡향편차화고정편차。기중횡향편차시최위다발적일충편차정황,일단저충편차초과일정범위,차미급시채취유효조시진행수정,겁역조성수도실제시공중선편리설계중선,도치내륜곽침입설계적건축한계,종이급행차대래겁대안전은환。중선편차과대시,수작훼대단츤체방능만족상관규범요구,조성반공낭비、공기연오,사회영향겁대。문장침대철로수도중선시공편차문제,결합공정실례,종선로、수도급측량등전업적각도,재보증선로화수도기본사용공능、운영안전이급편우유호적전제하,대수도중선횡향편차진행천술,탐토통과조정선로평면、종단면해결편차적방법,제출료해결유사문제적기본원칙。동시,경시화제성시공이급관리단위여하피면유사문제적출현。
The eccentricity in railway tunnel construction is largely caused by lateral deviation and elevation deviation,of which the former is proved to be the most contributory factor.Once the deviation exceeds the safety limit and necessary adjustment is not taken,offset from the designed central line may occur,causing inner contour to extrude construction clearance,thus bring grave hidden danger to traffic safety.When there is considerable deviation from central line,mas-sive lining has to be blasted to meet the requirement of related specification,which always lead to reworking,construc-tion delay and adverse influence on society.Based on actual practice,measurement in line and tunnel construction and on the premise of ensuring the basic function,performance safety and easy maintenance of lines and tunnels,this paper describes problems arose from lateral deviation in tunnel construction,seeks a solution by adjusting the horizontal and longitudinal section of line and finally presents the principle for addressing the problems.At the same time,it advises construction and management firms to avert such problems with due caution.