Impact of Shield Tunneling on Adjacent Pile Foundation in Sandy Cobble Strata
Impact of Shield Tunneling on Adjacent Pile Foundation in Sandy Cobble Strata
复制标题
砂卵石地层盾构施工对相邻桩基的影响
DOI：
10.1260/1369-4332.16.8.1457
复制
发表时间：
2013-08
影响因子：
2.6
通讯作者：
Jun Wang
中科院分区：
文献类型：
--
作者：
Yingchao Jiang;Yong Fang;Kun Feng;Jun Wang
评估城区盾构隧道对邻近桩基的影响对于确保桩基建筑物的稳定性和完整性至关重要。砂卵石地层具有分散性强的传力特点；因此盾构施工很容易破坏原始地层的平衡状态。本研究参考成都地铁1号线，采用Φ520 mm EPB模型盾构机进行模型试验，研究盾构掘进对既有桩基变形和内力的影响。同时采用颗粒离散元法从微观角度分析桩基周围土颗粒的运动特征。结果表明，盾构施工对桩基周围土体产生扰动，使地表下沉、桩基倾斜，导致桩基底部及附近区域出现应力集中。盾构掘进过程中刀盘正阻力以及盾构机与周围地层之间的摩擦作用导致桩基三维移动变形。
The assessment of the impact of urban area shield tunneling on adjacent pile foundations is essential to ensure the stability and integrity of the piled buildings. Sandy cobble strata has force transmission feature of strong dispersion; therefore the equilibrium state of original strata would be easily destroyed by shield tunneling. In this study, model tests referring to the Chengdu Metro Line 1 and using the Φ520 mm EPB model shield machine are carried out to investigate the impact of shield tunneling on the existing pile foundation deformation and internal forces. Meanwhile, particle distinct element method is applied to analyze the soil particle movement feature surrounding the pile foundation from the micro view. Results showed that soil disturbance surrounding the pile foundation caused by shield tunneling makes the ground surface subsidence and pile foundation tilt, leading to the occurrence of stress concentration at the pile foundation base and nearby regions. Cutter head positive resistance and friction effect between shield machine and surrounding strata lead to the pile foundation three-dimensional movement and deformation during the shield tunneling.
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影响因子：
3.7
作者：
N. Loganathan;H. Poulos;K. Xu
通讯作者：
N. Loganathan;H. Poulos;K. Xu
DOI：
10.1061/(asce)1090-0241(1998)124:9(846
发表时间：
1998-09-01
影响因子：
3.9
作者：
Loganathan, N;Poulos, HG
通讯作者：
Poulos, HG
DOI：
--
发表时间：
1993
期刊：
--
影响因子：
--
作者：
M. Gunn
通讯作者：
M. Gunn
DOI：
10.1002/nag.194
发表时间：
2002-03
影响因子：
4
作者：
H. Mroueh;I. Shahrour
通讯作者：
H. Mroueh;I. Shahrour
影响因子：
5.3
作者：
K. Xu;H. Poulos
通讯作者：
K. Xu;H. Poulos