CAJ | 학술논문

盾构施工过程中由于土体挖除、管片和二衬设置,将在穿越过程引起机场滑行道和停机坪沉降或隆起,对机场正常运营产生不利影响；通过优化盾构机施工参数,从而降低盾构下穿过程中对机场的不利影响。基于ABAQUS有限元法,建立南京至高淳城际快轨下穿禄口机场复合地层段的有限元模型,分析盾构法施工引起的机场停机坪及滑行道变形特征,最终沉降最大值约为11 mm,最大隆起值约为2 mm,同时得到盾构施工工作参数。对比实际施工监测数据,针对施工风险提出更安全的盾构施工参数。
순구시공과정중유우토체알제、관편화이츤설치,장재천월과정인기궤장활행도화정궤평침강혹륭기,대궤장정상운영산생불리영향；통과우화순구궤시공삼수,종이강저순구하천과정중대궤장적불리영향。기우ABAQUS유한원법,건립남경지고순성제쾌궤하천록구궤장복합지층단적유한원모형,분석순구법시공인기적궤장정궤평급활행도변형특정,최종침강최대치약위11 mm,최대륭기치약위2 mm,동시득도순구시공공작삼수。대비실제시공감측수거,침대시공풍험제출경안전적순구시공삼수。
Due to soil excavation, pipe segment and secondary-lining setting-up, settlement or upheaval of taxiway and parking apron in the airport is likely to be induced especially during the time when shield machine is passing through under the airport, which adversely affects the normal operation of the airport. In this paper, shield construction parameters are adjusted to reduce the adverse effects towards the parking apron and the taxiway. Finite element model of intercity fast track between Nanjing and Gaochun passing through the complex stratum where the Lukou airport is located is established with ABAQUS software. The deformation of the parking apron and the taxiway caused by the construction is analyzed and the data show that the max sedimentation value is 11mm, while the max uplift value is 2mm. Meanwhile, operating parameters of the construction are obtained. Compared with the actual monitoring data, some safer shield construction parameters are recommended against construction risks.