软土地基处理中强夯法的施工参数优化研究 -土木工程专业

摘要

软土地基因其低承载力和高沉降特性，一直是土木工程领域的重要研究课题。为提升地基性能，强夯法作为一种经济高效的处理技术被广泛应用，但其施工参数的优化仍面临诸多挑战。本研究以软土地基处理中的强夯法为核心，旨在通过科学方法优化施工参数，提高地基加固效果并降低工程成本。研究基于现场试验与数值模拟相结合的方法，选取典型软土地质条件，系统分析了夯击能、夯点间距、夯击次数等关键参数对地基加固效果的影响规律。同时，引入响应面法构建参数优化模型，并结合实际工程案例验证模型的适用性与可靠性。结果表明，合理调整施工参数可显著改善地基承载力与变形特性，其中夯击能与夯点间距的匹配关系是影响加固效果的关键因素。此外，研究提出了一种基于多目标优化的参数设计方法，能够在满足工程需求的前提下实现资源的最优配置。本研究的主要创新点在于将响应面法与强夯施工参数优化相结合，为软土地基处理提供了理论支持和技术指导，具有重要的工程应用价值。研究成果可为类似工程提供参考，推动强夯技术在软土地基处理领域的进一步发展。

关键词：软土地基；强夯法；施工参数优化；响应面法；地基加固效果

ABSTRACT

Soft soil foundations, characterized by low bearing capacity and significant settlement properties, have long been a critical research topic in civil engineering. To enhance foundation performance, the dynamic compaction method has been widely adopted as an economically efficient technique; however, the optimization of its construction parameters remains challenging. This study focuses on the dynamic compaction method for soft soil foundation treatment, aiming to optimize construction parameters through scientific approaches to improve reinforcement effectiveness while reducing engineering costs. By integrating field experiments with numerical simulations, typical soft soil geological conditions were selected to systematically analyze the influence patterns of key parameters such as compaction energy, spacing between compaction points, and the number of compaction blows on foundation reinforcement outcomes. Additionally, the response surface methodology was introduced to construct a parameter optimization model, which was validated through practical engineering cases to confirm its applicability and reliability. The results indicate that appropriately adjusting construction parameters can significantly enhance foundation bearing capacity and deformation characteristics, with the matching relationship between compaction energy and spacing between compaction points being a crucial factor affecting reinforcement effectiveness. Furthermore, this study proposes a multi-ob jective optimization-based parameter design method capable of achieving optimal resource allocation under engineering requirements. A primary innovation of this research lies in combining the response surface methodology with the optimization of dynamic compaction construction parameters, providing theoretical support and technical guidance for soft soil foundation treatment, thus holding significant engineering application value. The findings can serve as a reference for similar projects and promote further development of the dynamic compaction technique in the field of soft soil foundation treatment.

Keywords: Soft Soil Foundation; Dynamic Compaction Method; Construction Parameter Optimization; Response Surface Method; Foundation Reinforcement Effect

第1章绪论 1

1.1 软土地基处理的研究背景与意义 1

1.2 强夯法在软土地基处理中的应用现状 1

1.3 施工参数优化的研究进展与挑战 2

1.4 本文研究方法与技术路线 2

第2章强夯法施工参数的影响因素分析 3

2.1 地基土体特性对施工参数的影响 3

2.2 夯击能量的选择与优化策略 3

2.3 夯点间距的设计原则与影响评估 4

2.4 夯击次数的确定方法与效果评价 4

2.5 夯沉量控制标准与实际应用 5

第3章施工参数优化的理论模型构建 6