CAJ | 학술논문

依托南京轨道交通盾构施工穿越禄口机场段工程，针对上软下硬复合地层盾构施工诱发地层沉降及控制技术进行研究，建立穿越机场前试验段地层沉降初步预测的数值计算模型，通过现场监测数据进行模型参数调整，用于穿越机场时地层沉降的地表沉降的计算；并提出适用于上软下硬复合地层穿越重要建（构）筑物区间的施工控制技术。研究结果表明：隧道横向不均匀沉降影响范围在隧道两侧1．5D范围内；采用“欠土压推进”的模式，穿越重要构筑物区间时地面沉降可控制在允许的范围内。
의탁남경궤도교통순구시공천월록구궤장단공정，침대상연하경복합지층순구시공유발지층침강급공제기술진행연구，건립천월궤장전시험단지층침강초보예측적수치계산모형，통과현장감측수거진행모형삼수조정，용우천월궤장시지층침강적지표침강적계산；병제출괄용우상연하경복합지층천월중요건（구）축물구간적시공공제기술。연구결과표명：수도횡향불균균침강영향범위재수도량측1．5D범위내；채용“흠토압추진”적모식，천월중요구축물구간시지면침강가공제재윤허적범위내。
On the background of shield construction undercrossing Lukou airport section of Nanjing Metro,the settlement induced by control and calculation of shield construction in upper soft and lower hard mixed ground was studied.The numerical model was established for the preliminary forecasting of ground settlement in test sec-tion before shield undercrossing airport.The model parameters were adjusted by site monitoring data,and then, the ground settlement of shield undercrossing airport was calculated.Finally the construction control technology of shield undercrossing important structures interval was proposed in upper soft and lower hard mixed ground. The results show that the influence of transverse differential settlement is in the range of both sides of 1 .5 D of the tunnel.In addition,when shield machinery undercrossing intervals with important structures,the settlement can be controlled within a permissible range by the mode of'under earth pressure'.