摘 要
在地震工程领域，地基土的抗液化性能是影响建筑物稳定性和安全性的关键因素。随着地震频发对城市安全构成威胁，探索有效提升地基土抗液化性能的工艺变得尤为重要。压浆工艺作为一种地基处理技术，通过向土体中注入特定材料，以改善其结构，从而显著提升地基土的抗液化能力。本研究深入探讨了压浆工艺对地基土抗液化性能提升的影响，揭示了其作用机理，并分析了不同工艺参数对土体改良效果的影响。研究首先通过广泛的文献调查，总结了当前压浆工艺的发展现状和存在的科学问题，明确了研究的目的和方向。随后，基于地基土液化现象的理论基础，详细分析了压浆后土壤结构变化、微观机理以及工艺参数对土体抗液化性能的影响。通过对多个实际工程案例的分析，评估了压浆工艺在实际中的应用效果，并提出了优化措施。本研究的实质进展在于系统地阐释了压浆工艺提升地基土抗液化性能的理论与实践，为工程应用提供了科学依据。成果不仅有助于提高地震多发区建筑的安全性，还对未来城市抗震设计及土地使用规划具有重要的指导意义。
关键词：压浆工艺；地基土；抗液化性能；工艺优化
Abstract
In the field of earthquake engineering, the liquefaction resistance of foundation soil is a key factor affecting the stability and safety of buildings. With frequent earthquakes posing a threat to urban safety, it has become particularly important to explore effective techniques to improve the liquefaction resistance of foundation soil. As a foundation treatment technology, grouting technology injects specific materials into the soil to improve its structure, thereby significantly enhancing the liquefaction resistance of the foundation soil. This study delves into the influence of grouting technology on the improvement of liquefaction resistance of foundation soil, reveals its mechanism of action, and analyzes the influence of different process parameters on the effectiveness of soil improvement. The study first summarized the current development status and scientific problems of grouting technology through extensive literature review, and clarified the purpose and direction of the research. Subsequently, based on the theoretical foundation of soil liquefaction phenomenon, a detailed analysis was conducted on the changes in soil structure, micro mechanisms, and the influence of process parameters on the anti liquefaction performance of soil after grouting. By analyzing multiple practical engineering cases, the application effect of grouting technology in practice was evaluated, and optimization measures were proposed. The substantive progress of this study lies in the systematic elucidation of the theory and practice of using grouting technology to improve the liquefaction resistance of foundation soil, providing a scientific basis for engineering applications. The achievements not only contribute to improving the safety of buildings in earthquake prone areas, but also have important guiding significance for future urban seismic design and land use planning.
Keywords: grouting process; Foundation soil; Anti liquefaction performance; Process optimization
目 录
一、绪论 1
1.1 研究背景与意义 1
1.2 国内外研究现状 1
1.3 研究目的及方法 1
二、压浆工艺与地基土抗液化性能基础理论 2
2.1 压浆工艺原理 2
2.2 地基土液化现象的概念 2
2.3 地基土液化现象的影响因素 3
2.3.1 土壤类型和结构 3
2.3.2 地下水位和水压 3
2.3.3 地震活动性 3
2.3.4 人为活动和工程影响 4
三、压浆工艺提升地基土抗液化性能的机理分析 4
3.1 压浆后土壤结构的变化 4
3.1.1 土粒间空隙的填充与减小 4
3.1.2 土壤颗粒排列的重组 4
3.1.3 土壤密度的增加与孔隙水压力的降低 5
3.2 抗液化性能增强的微观机理 5
3.2.1 土壤颗粒重组与密实化 5
3.2.2 浆液化学成分与土壤相互作用 5
3.2.3 孔隙水压力变化与土壤响应 6
3.3 工艺参数对抗液化性能的影响 6
3.3.1 浆液浓度与渗透性 6
3.3.2 注浆压力与土壤结构 7
3.3.3 固化时间与强度发展 7
四、压浆工艺应用案例分析 7
4.1 案例选取 7
4.2 案例分析 8
4.3 案例中的问题与改进措施 8
五、压浆工艺提升地基土抗液化性能的优化措施 8
5.1 浆液材料和配比优化 8
5.2 压浆技术和设备改进 9
5.3 地基土预处理及加固 9
5.4 施工过程监控与质量评估结论 10
结论 10
参考文献 10
