摘 要
随着城市化进程的加快和地下空间开发的深入，基坑工程在建筑领域中的重要性日益凸显，而预应力锚索作为基坑支护的关键技术之一，在确保施工安全和经济效益方面发挥着重要作用本研究以预应力锚索的优化设计与施工技术为核心，旨在通过理论分析、数值模拟和现场试验相结合的方法，解决传统设计中存在的材料浪费、施工效率低下及安全性不足等问题研究首先基于有限元分析方法，对不同工况下锚索的受力特性进行系统分析，揭示了锚索张拉力分布规律及其对支护结构稳定性的影响其次，提出了一种基于多目标优化算法的锚索布置方案，综合考虑经济性、可靠性和施工可行性，显著提高了设计方案的合理性此外，针对施工过程中的关键技术难点，研发了一套智能化监测与控制体系，实现了对锚索张拉力的实时动态调整，有效降低了施工风险研究结果表明，优化后的锚索设计不仅能够减少约20%的钢材用量，还显著提升了基坑支护的整体性能，为类似工程提供了重要的参考价值本研究的主要创新点在于将多学科交叉理念引入锚索设计与施工领域，构建了从理论到实践的完整技术体系，为推动基坑工程技术的发展做出了积极贡献
关键词：预应力锚索；基坑支护；多目标优化
ABSTRACT
With the acceleration of urbanization and the in-depth development of underground space, the importance of excavation engineering in the construction field has become increasingly prominent. Prestressed anchor cables, as one of the key technologies for excavation support, play a significant role in ensuring construction safety and economic benefits. This study focuses on the optimization design and construction technology of prestressed anchor cables, aiming to address issues such as material waste, low construction efficiency, and insufficient safety in traditional designs through a combination of theoretical analysis, numerical simulation, and field experiments. Firstly, based on the finite element analysis method, a systematic analysis of the force characteristics of anchor cables under different working conditions was conducted, revealing the distribution pattern of anchor cable tension and its influence on the stability of the supporting structure. Secondly, a multi-ob jective optimization algorithm-based anchor cable layout scheme was proposed, comprehensively considering economy, reliability, and construction feasibility, significantly improving the rationality of the design scheme. Furthermore, targeting key technical challenges during construction, an intelligent monitoring and control system was developed, enabling real-time dynamic adjustment of anchor cable tension and effectively reducing construction risks. The results indicate that the optimized anchor cable design not only reduces steel consumption by approximately 20% but also significantly enhances the overall performance of excavation support, providing valuable reference for similar projects. The main innovation of this study lies in introducing interdisciplinary concepts into the design and construction of anchor cables, establishing a complete technical system from theory to practice, and making a positive contribution to the advancement of excavation engineering technology.
Keywords: Prestress Anchor Cable; Excavation Support; Multi-ob jective Optimization
目 录
摘 要 I
ABSTRACT II
第1章 绪论 1
1.1 基坑支护与预应力锚索的研究背景 1
1.2 预应力锚索优化设计的意义分析 1
1.3 国内外研究现状与技术进展 1
1.4 本文研究方法与技术路线 2
第2章 预应力锚索的优化设计理论 3
2.1 锚索受力特性与力学模型分析 3
2.2 优化设计的关键参数与约束条件 3
2.3 数值模拟在锚索优化中的应用 4
2.4 不同工况下的优化设计策略 4
2.5 理论模型的验证与改进 5
第3章 预应力锚索施工技术研究 6
3.1 锚索施工工艺流程与质量控制 6
3.2 锚固段注浆技术及其影响因素 6
3.3 张拉与锁定过程的技术要点 7
3.4 施工过程中常见问题及解决方案 7
3.5 新型施工技术的应用前景 8
第4章 工程案例分析与实践验证 9
4.1 典型基坑工程概况与地质条件 9
4.2 锚索优化设计方案的具体实施 9
4.3 施工监测数据的采集与分析 10
4.4 实际效果评估与改进建议 10
4.5 案例总结与经验推广 11
结论 12
参考文献 13
致 谢 14
