摘要
近年来,非开挖技术(尤其是微型隧道/顶管技术)作为城市环境中公用设施管道安装手段的普及程度有所提高,这得益于其与传统明挖开挖方法相比具有破坏性小、碳足迹减少的特性。顶管过程中管道的反应复杂,受多种因素影响,包括土体条件、润滑剂的数量和分布、管道和环空尺寸、管道错位以及顶力偏心等。设计实践仍基于经验公式和以往类似地质条件下的顶管经验,这导致顶力估算存在不确定性,从而限制了该技术的采用。为了增进对顶管过程的理解,可以使用内置传感器的管道,以实时测量土压力、孔隙水压力、轴向应变和环向应变;但文献中报道的此类研究数量较少,且在常规项目中使用仪器的潜力尚未充分挖掘。此外,顶管监测实践落后于用于监测其他岩土基础设施的最先进仪器技术。本文旨在全面回顾从顶管案例研究和其他辅助研究中获得的知识,并提出针对当前设计实践和顶管项目现场监测中研究差距的潜在解决方案。
The popularity of trenchless techniques as a means of utility pipeline installation in urban environments,specifically microtunnelling/pipe-jacking,has increased in recent years due to its minimallydisruptive nature and reduced carbon footprint in comparison to conventional open-cut excavation methods.The response of pipes during the jacking process is complex and is governed by several factors,including ground conditions,the amount and distribution of lubrication,pipe and annulus size,pipeline misalignments and jacking force eccentricity,among others.Design practice remains based on empirical equations and previous drives through similar geology,resulting in uncertainty in jacking force estimates,thereby restricting adoption of the technique.In order to improve our understanding of the pipe-jacking process,pipes incorporating sensors providing real-time measurements of earth pressures,pore water pressures,axial strains and hoop strains can be used;but the number of such studies reported in the literature is small and the potential of instrumentation on routine projects is largely untapped.Moreover,jacking pipe monitoring practice lags behind the state-of-the-art instrumentation techniques used for monitoring other geotechnical infrastructure.The purpose of this paper is to provide a thorough review of learnings from instrumented pipe-jacking case studies and other supporting research,as well as to propose potential solutions to research gaps in the current state of design practice and field monitoring of pipe jacking projects.
作者
Asad Wadood
Bryan A.McCabe
Brian B.Sheil
Asad Wadood;Bryan A.McCabe;Brian B.Sheil(Civil Engineering,School of Engineering,University of Galway,Ireland;Laing O’Rourke Centre for Construction Engineering and Technology,University of Cambridge,United Kingdom)
出处
《非开挖技术》
2026年第2期14-29,共16页
China Trenchless Technology
关键词
非开挖技术
微型隧道
顶管
仪器
现场监测
Trenchless technology
Microtunnelling
Pipe jacking
Instrumentation
Field monitoring
