抗浮锚杆在某工程设计、施工与验收中的应用

Application of Anti-floating Anchor to Some Engineering Design,Construction and Acceptance Inspection

抗浮锚杆是一种竖向锚固技术,主要是用于抵抗由于地下水位较高而导致地下室底板承受的地下水浮力,以解决地下工程的抗浮问题,但抗浮锚杆的设计和施工还没有现行的规范可循。本文结合大连-滨海地区某工程实例,阐述抗浮锚杆的试验、设计及施工过程,以及通过现场锚杆的抗拔试验,测试得出了锚杆在不同岩层中的抗拔力,为类似的工程设计提供参考数据和积极的借鉴经验。实践表明,中风化石灰岩的锚固段长度小于中风化辉绿岩,这将为滨海地区广泛借鉴应用抗浮锚杆技术提供实践依据。

Anti-floating anchor is a kind of vertical anchoring technology,which is mainly used to resist the buoyancy caused by high water table,so it can solve the anti-floating problems in underground engineering. But for the design and construction of anti-floating anchor there is no current specification to follow. In this paper combined with an engineering project in Dalian-coastal region as an example to explain the process of anti-floating anchor test,design and construction,and the pullout resistance in different layers through the field anchor pull-out test is obtained which will provide reference data and positive experience for the similar engineering design. Practice shows that the anchorage length in the weathering limestone is less than that in the weathering diabase,which will provide the practical basis for wider application of anti-floating anchor in coastal region.