摘 要
湿陷性黄土地区由于其特殊的地质条件，对地基处理提出了较高要求，合理选择经济可行的地基处理方法成为工程建设中的关键问题。本研究以湿陷性黄土地区为背景，旨在对比分析不同地基处理方法的经济性，为实际工程提供科学依据。研究选取了强夯法、灰土挤密桩法、预压法和化学加固法等常见地基处理技术，基于实际工程案例数据，构建了综合经济评价模型，将直接成本、施工周期及后期维护费用纳入考量范围，并引入环境影响因子进行修正。通过定量分析与定性评估相结合的方法，系统比较了各方法在不同地质条件和工程需求下的适用性和经济性。结果表明，强夯法在浅层湿陷性黄土处理中具有显著的成本优势，而灰土挤密桩法则更适合深层加固需求；预压法在软土夹层条件下表现出较高的性价比，化学加固法则因材料成本较高而在大规模工程中受限。本研究的创新点在于首次将全生命周期成本分析与环境影响评价融入地基处理经济性评估体系，为湿陷性黄土地区的地基处理方案优化提供了新思路。研究成果可为类似地质条件下的工程实践提供重要参考。
关键词：湿陷性黄土；地基处理经济性；全生命周期成本；环境影响评价；综合经济评价模型
ABSTRACT
In loess areas with collapsibility, the special geological conditions impose high demands on foundation treatment, and the rational selection of economically feasible methods has become a critical issue in engineering construction. This study, set against the backdrop of collapsible loess regions, aims to compare and analyze the economic viability of different foundation treatment methods, providing scientific support for practical engineering applications. Common foundation treatment techniques such as dynamic compaction, lime-soil compacted pile, preloading, and chemical grouting were selected for evaluation. Based on real-world project data, a comprehensive economic assessment model was developed, incorporating direct costs, construction duration, long-term maintenance expenses, and an environmental impact factor for adjustment. By combining quantitative analysis with qualitative evaluation, the suitability and cost-effectiveness of each method under varying geological conditions and engineering requirements were systematically compared. The results indicate that dynamic compaction demonstrates significant cost advantages in shallow collapsible loess treatment, while the lime-soil compacted pile method is more suitable for deep reinforcement needs. Preloading exhibits higher cost-performance ratios in soft soil interlayer conditions, whereas chemical grouting is limited in large-scale projects due to high material costs. An innovation of this study lies in its integration of life-cycle cost analysis and environmental impact assessment into the economic evaluation fr amework for foundation treatment, offering new insights for optimizing foundation treatment schemes in collapsible loess regions. The findings provide valuable references for engineering practices in similar geological contexts.
Keywords: collapsible Loess; Foundation Treatment Economy; Whole Life Cycle Cost; Environmental Impact Assessment; Comprehensive Economic Evaluation Model
目 录
第1章 绪论 1
1.1 湿陷性黄土地区地基处理的背景与意义 1
1.2 不同地基处理方法的研究现状分析 1
1.3 本文研究方法及技术路线设计 2
第2章 地基处理方法的技术经济特性分析 3
2.1 常用地基处理方法的技术特点比较 3
2.2 不同地基处理方法的成本构成分析 3
2.3 技术经济特性的综合评价指标体系 4
第3章 湿陷性黄土地区的地基处理适用性研究 6
3.1 湿陷性黄土的工程特性及其对地基的影响 6
3.2 各种地基处理方法在湿陷性黄土中的适用性评估 6
3.3 地基处理方法选择的关键因素分析 7
第4章 不同地基处理方法的经济性对比研究 8
4.1 地基处理方法的直接成本对比分析 8
4.2 长期经济效益与维护成本的量化评估 8
4.3 经济性对比结果与优化建议 9
结论 10
参考文献 11
致 谢 12
