土钉墙支护在边坡工程中的稳定性现场监测与评估 -土木工程专业

摘要

土钉墙作为一种经济高效的支护形式，在边坡工程中得到了广泛应用，但其长期稳定性与变形特性仍需深入研究。为揭示土钉墙在实际工况下的受力与变形规律，本文以某典型边坡工程为研究对象，开展了系统的现场监测与评估工作。研究通过布设多组位移计、应变计及压力盒等传感器，对土钉拉力、土体位移及锚固体应力进行了长期动态监测，并结合有限元数值模拟分析了不同工况下土钉墙的稳定性表现。结果表明，土钉墙在施工期和运营期均表现出良好的抗滑性能，但局部区域因地下水渗流作用导致土钉拉力显著增加，可能影响长期稳定性。基于监测数据，提出了一种改进的稳定性评估方法，能够更准确地预测土钉墙的安全储备。本研究的创新点在于将现场实测数据与数值模拟相结合，建立了考虑水-土耦合作用的稳定性评价体系，为类似工程的设计优化与风险控制提供了重要参考。研究成果不仅验证了土钉墙支护技术的可靠性，还为复杂条件下边坡工程的稳定性分析提供了新思路。

关键词：土钉墙；稳定性评估；水-土耦合；现场监测；数值模拟

ABSTRACT

Soil nailing walls, as an economically efficient retaining form, have been widely applied in slope engineering; however, their long-term stability and deformation characteristics still require in-depth investigation. To reveal the stress and deformation behavior of soil nailing walls under actual working conditions, this study focuses on a typical slope engineering case, conducting systematic field monitoring and evaluation. Multiple sensors, including displacement gauges, strain gauges, and pressure cells, were installed to perform long-term dynamic monitoring of soil nail tension, soil displacement, and anchor body stress. Finite element numerical simulations were further carried out to analyze the stability performance of the soil nailing wall under various working conditions. The results indicate that the soil nailing wall exhibits good anti-sliding performance during both construction and operation phases; however, in certain local areas, significant increases in soil nail tension were observed due to groundwater seepage effects, which may potentially affect long-term stability. Based on the monitoring data, an improved stability assessment method is proposed, enabling more accurate prediction of the safety reserve of soil nailing walls. The innovation of this study lies in the integration of field-measured data with numerical simulation, establishing a stability evaluation system that considers hydro-mechanical coupling effects, thus providing critical references for design optimization and risk control in similar engineering projects. The research findings not only validate the reliability of soil nailing wall technology but also offer new insights into stability analysis for slope engineering under complex conditions.

Keywords: Soil Nailing Wall; Stability Evaluation; Hydro-Mechanical Coupling; Field Monitoring; Numerical Simulation

第1章绪论 1

1.1 土钉墙支护研究背景与意义 1

1.2 国内外研究现状分析 1

1.3 本文研究方法概述 2

第2章土钉墙支护稳定性理论基础 3

2.1 土钉墙支护基本原理 3

2.2 稳定性分析关键参数 3

2.3 理论模型与计算方法 4

第3章现场监测技术与数据采集 5

3.1 监测方案设计原则 5

3.2 关键指标的现场监测方法 5