Twin Tunnel Interaction: Surface and Subsurface Effects
Twin Tunnel Interaction: Surface and Subsurface Effects
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DOI：
10.1061/(asce)1532-3641(2001)1:2(249
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发表时间：
2001-04
影响因子：
3.7
通讯作者：
T. Addenbrooke;D. Potts
中科院分区：
文献类型：
--
作者：
T. Addenbrooke;D. Potts
本文给出了双洞施工的13个平面应变、耦合固结、非线性有限元分析结果。有两组分析，第一组模型是两个平行并排运行的隧道，第二个是在另一个隧道之上(搭载)。改变隧道之间的间距以确定影响区域，并改变两个隧道施工之间的时间以确定长期固结或膨胀的影响。计算结果给出了两个近距离隧道开挖中第二个隧道开挖对地表沉降分布的预期修正，以及相邻隧道开挖对既有隧道衬砌变形的预期影响。提供了现场数据，以支持数值预测的相互作用的大小。结果表明，隧道的相对位置(上方、下方或两侧)和物理间距对地表沉降量有显著影响。
ABSTRACT This article presents the results from 13 plane strain, coupled consolidation, non-linear finite element analyses of twin tunnel construction. There are two sets of analyses, the first models two tunnels running parallel side-by-side, and the second one above the other (piggyback). The spacing between the tunnels is varied so as to ascertain the zones of influence, and the time between the construction of the two tunnels is varied to establish the influence of prolonged consolidation or swelling. The results present the expected modification to the settlement profile above the second of two close tunnel excavations, and the expected distortion induced in an existing tunnel lining when an adjacent tunnel is excavated. Field data, where available, are presented to support the magnitudes of the interactions being predicted numerically. It is concluded that the relative position (above, below, or to the side) and the physical spacing of the tunnels has a significant effect on the surface settlement p...