地下结构抗浮设计研究

Study on anti-floating design of underground structure

随着地下工程的功能要求越来越复杂,空间利用越来越充分,地下室的埋深也越来越大。地下设防水位对工程施工和使用有决定性的意义。科学确定抗浮水位对工程的安全性和经济性起着重要的作用。结合具体实际工程,对西安地区水文地质加深了认识。因地制宜,制定科学的抗浮治理方案,采取综合全面的抗浮措施,保证工程在全生命周期内的抗浮设防标准。对比不同锚固体系、锚固材料以及锚固工艺,经济合理地解决了埋置较深的地下室高水位抗浮的问题。同时,对现行《建筑工程抗浮技术标准》(JGJ476-2019)中抗浮锚杆的有关规定,结合自身理解提出了相关的建议。

As the functional requirements of underground engineering become more and more complex,the space is more and more fully utilized,and the underground depth is also more and more large.The underground fortification water table is of decisive significance to the construction and use of the project.Scientific determination of water table against uplift plays an important role in the safety and economy of the project.Combined with specific practical engineering,deepen the understanding of hydrogeology in Xi’an area.Adjust measures to local conditions,formulate scientific treatment plan against uplift and take comprehensive measurement against uplift to ensure the crierion of fortification against uplift in the whole life cycle of the project.By comparing different anchoring system,anchoring material and anchoring process,the problem of anti-floating in high water table of pure basement can be solved economically and reasonably.At the same time,the author puts forward some suggestions on the relevant provisions of anti-floating anchor in the current“Technical standard for building engineering against uplift”(JGJ476-2019).