摘要
根据海南东环铁路美兰机场明挖隧道施工要求,拟定了监测方案,通过监测获得了围护结构变形与内力变化的一些规律,主要包括桩身最大变形及位置、锚索拉力突变、钢支撑轴力变化等,对基坑围护结构设计及施工参数选择有指导作用。
Based on the construction control requirements of the cut and cover railway tunnel excavation near Meilan Airfield in Hainan, a field measurement scheme is studied out. Varied laws on deflections and internal forces of excavation reraining and protecting, including maximum deflection of piles and its location, anchor tension saltation, steel tube bracing axial pressure varieties, and etc, are obtained. These laws will play a guidance role in the design and the selection of construction parameters of excavation retaining and protecting.
出处
《铁道建筑技术》
2009年第5期133-137,共5页
Railway Construction Technology
关键词
明挖隧道
锚索拉力
围护桩变形
钢支撑轴力
施工监测
cut and cover railway tunnel
anchor tension
deflection of piles
steel tube bracing axial pressure
construction field measurement
