地下结构抗浮设计水位概念与设计相关问题探讨  

Discussion on Related Problems of Concept and Design of Anti-floating Design Water Level of Underground Structure

作　　者：陈凝旖 成建梅 Chen Ningyi;Cheng Jianmei(School of Environmental Studies,China University of Geosciences(Wuhan))

机构地区：[1]中国地质大学(武汉)环境学院,武汉市430078

出　　处：《勘察科学技术》2021年第1期16-22,共7页Site Investigation Science and Technology

基　　金：国家自然科学基金项目(U1911205)。

摘　　要：正确认识地下结构受到的水浮力,选取合理的抗浮设计方法,并提出有效的抗浮措施,是合理开展地下空间开发,保障地下工程安全施工及运行的重要基础。抗浮设计水位的确定和水浮力计算是抗浮设计中的重点,该文在系统梳理前人研究成果的基础上,汇总出3个具有代表性的抗浮设计水位概念,分析了4种常用的预测远期最高地下水位方法,总结未来发展趋势,归纳出地下结构水浮力计算方法,并介绍工程中常用的抗浮措施。结合3个典型案例,详细地讨论抗浮设计水位的取值及相关设计问题,为地下结构抗浮设计提供思路。Correctly understanding the buoyancy of underground structure, selecting reasonable anti floating design method and proposing effective anti-floating measures are the important foundation for reasonably developing the underground space and ensuring the safety of construction and operation of underground engineering. The determination of anti-floating design water level and the calculation of water buoyancy are the key points in anti-floating design. Based on the previous research results, this paper summarizes three representative concepts of anti-floating design water level, analyzes four commonly used methods for predicting the long-term maximum groundwater level, summarizes the future development trend, sums up the calculation methods of water buoyancy of underground structure, and introduces the common anti-floating measures in engineering. Combined with three typical cases, the value of anti-floating design water level and related design problems are discussed in detail, which provides the ideas for anti-floating design of underground structures.

关 键 词：地下结构 抗浮设计 抗浮设计水位 

分 类 号：TU93[建筑科学—结构工程]