考虑顶管施工过程的地面沉降控制数值分析

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摘要顶管施工扰动周围土体，从而引起地面沉降或建筑物的损坏，尤其在高水位软土地层中。为了减小曲线顶管施工对邻近土体的扰动和建筑物的影响，以地面沉降为控制目标，进行施工参数优化，达到较好的控制效果。采用数值模拟方法，通过调整顶管的摩阻力、机头压力、土体抗力，模拟得到地表沉降的大小。研究发现，当摩阻力为10 kPa，机头压力为0.18 MPa，土体抗力为15 kPa时，地面沉降值最小，能够满足周围环境和施工安全的要求，结论可为类似工程设计施工提供参考。

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关键词 ：数值分析, 地面沉降, 顶管施工, 施工参数, 优化分析

Abstract：Pipe jacking construction causes soil disturbance and leads to surface settlement and building damage. In order to reduce soil disturbance and building damage，especially in soft soils with high water level，numerical simulation is conducted to optimize construction parameters based on surface settlement control，because settlement is comprehensive response. The parameters，such as friction，pipe jacking pressure，soil anti-force，were comprehensively analyzed to control surface settlement and protect environment and construction safety. Result shows that when above mentioned three parameters are 10 kPa，0.18 MPa，15 kPa，respectively，the surface settlement is the least. The conclusion could provide the references to similar engineering.

Key words： numerical analysis surface settlement pipe jacking construction construction parameters optimization analysis

收稿日期: 2013-06-03

引用本文:

喻军1，龚晓南2. 考虑顶管施工过程的地面沉降控制数值分析[J]. 岩石力学与工程学报, 2014, 33(sl): 2605-2610.
YU Jun1，GONG Xiaonan2. NUMERICAL ANALYSIS OF SURFACE SETTLEMENT CONTROL CONSIDERING PIPE JACKING CONSTRUCTION PROCESS. , 2014, 33(sl): 2605-2610.

链接本文:

https://rockmech.whrsm.ac.cn/CN/Y2014/V33/Isl/2605

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