摘要
用盾构法在软土中建造叠交隧道有一个重要现象:当一条隧道在另一条相邻隧道上方掘进时,在没有欠挖或过量压浆等施工因素的影响下地面仍然会隆起。文中对此作了探讨,依据弹性理论提出一个地面隆起变形公式,将该公式与地面沉降的派克(Peck)公式进行叠加,建立了盾构叠交隧道地层移动的数学模型,分析了黄浦江行人观光隧道掘进跨越上海地铁2号线时的地层移动,计算结果与现场测试相符合。
It is an important phenomenon that in constructing the interchange tunnels in soft soil by shield, the surface will rise up when a tunnel is advanced over another nearby built tunnel, even if there is no under-excavation or over-injection of slurry in the course. A formula for the surface rise is presented based on the theory of elasticity to explain the phenomenon, and a mathematical model to evaluate the entire movement of the surface in construction of the interchange tunnels is established by combining the present formula with Peck's formula for the surface settlement. The case of Huangpu River Sightseeing Tunnel advanced over Shanghai Metro Line No.2 is studied, and the model gives results in a good agreement with the in-situ data.
出处
《力学与实践》
CSCD
北大核心
2003年第4期32-35,共4页
Mechanics in Engineering
