抗浮锚杆承载性能研究进展

Research Progress on Bearing Capacity of Anti-floating Anchor

随着中国城市化建设步伐的加快,城市地下空间开发利用已成为热潮,相应的建(构)筑物基坑越来越深、基础埋深不断加大,特别是在地下水丰富且水位较高的地区,结构自身荷载不能有效抵抗地下水浮力时,随之而来的抗浮问题得到了社会的广泛关注。与传统解决建(构)筑物抗浮问题的技术方法相比,抗浮锚杆以单点受力小、地层适应能力强、应力分散、施工速度快、成本低等优点倍受工程界的青睐。对抗浮锚杆的发展历史、锚固性能、应力传递机制等相关研究进行归纳总结,讨论当前抗浮锚杆研究中的不足,并对抗浮锚杆的发展提出建议。

With the acceleration of the pace of urbanization in China,the development and utilization of urban underground space has become a boom.The corresponding foundations of construction(structures)are getting deeper and deeper,and the depth of foundations is increasing,especially in regions of rich groundwater and high water levels.When the structure's own load cannot effectively resist the groundwater buoyancy,it results in ananti-floating problem,which has received wide attention from the society.Compared with the traditional technical methods to solve the anti-floating problem of building(structure),the anti-floating anchor is favored by engineering with the advantages of small single point force,strong adaptability of the formation,stress dispersion,fast construction speed and low cost.The development history,anchoring performance and stress transfer mechanism of floating anchors are summarized firstly.Then the shortcomings in the current research on anti-floating anchors are discussed.Finally,suggestions for the development of floating anchors are proposed.