抗浮锚杆在地下结构抗浮中的耐久性研究进展与发展方向

锚杆的耐久性问题是当前岩土锚固技术中非常重要但相对薄弱的研究环节，抗浮锚杆工作环境恶劣，常处于水下或干湿交替、荷载波动范围、冻融循环及腐蚀介质等环境中，锚筋极易遭受侵蚀破坏，对抗浮锚杆的耐久性提出了新的挑战。本文简要介绍了抗浮锚杆的结构及作用机制，明确抗浮锚杆在地下结构中的基本工作原理，对影响抗浮锚杆耐久性的主要因素进行了详细分析，分别介绍了腐蚀环境、粘结剂以及多因素耦合作用对抗浮锚杆长期服役性能的影响，以及对于如何提高抗浮锚杆的耐久性给出解决方法，最后对抗浮锚杆在地下结构中的应用进行了归纳总结，提出了目前仍存在的不足与挑战，并针对抗浮锚杆的耐久性问题提供了相应建议。

Research progress and development direction on Durability of Anti-floating Anchor Acting on Underground Structure

The durability of anchor rods is a very important but relatively weak research link in the current rock and soil anchoring technology. The working environment of anti-floating anchor rods is harsh, often under water or alternately between dry and wet, load carrier dynamic range, freeze-thaw cycles and corrosive media, etc. In the environment, anchor bars are extremely susceptible to erosion and damage, which poses new challenges to the durability of floating anchor rods. This article briefly introduces the structure and mechanism of anti-floating anchor rods, clarifies the basic working principle of anti-floating anchor rods in underground structures, and analyzes in detail the main factors affecting the durability of anti-floating anchor rods. This article separately introduces the influence of the corrosion environment, the adhesive and the coupling of multiple factors against the long-term service performance of the anti-floating anchors, and how to improve the durability of anti-floating anchor rods are given solutions. Finally, the application of anti-floating anchor rods in underground structures is summarized. It puts forward the current deficiencies and challenges, and provides corresponding suggestions for the durability of anti-floating anchor rods.