富水地层地下结构抗浮技术研究综述及展望  

Review and Prospect of Researches on Anti-Buoyancy Technology for Underground Structures in Water-Rich Stratum

作　　者：孙玉永 肖红菊 罗凤 SUN Yu-yong;XIAO Hong-ju;LUO Feng(School of Civil Engineering and Architecture,Tongling University,Tongling Anhui 244061,China;Anhui Province Joint Construction Discipline Key Laboratory of Spatial Information Acquisition and Application,Tongling Anhui 244061,China;COMAC Shanghai Aircraft Customer Service CO.,Ltd.,Shanghai 200241,China)

机构地区：[1]铜陵学院建筑工程学院,安徽铜陵244061 [2]空间信息获取与应用安徽省联合共建学科重点实验室,安徽铜陵244061 [3]上海飞机客户服务有限公司,上海200241

出　　处：《铜陵学院学报》2024年第3期92-98,共7页Journal of Tongling University

基　　金：安徽省教育厅自然科学研究重大项目“软黏土中地下结构浮力计算及抗浮设计研究”(KJ2021ZD0125)。

摘　　要：随着地下工程的不断增多,地下结构浮起破坏也日益突出,针对地下结构抗浮技术的研究也越来越多。文章从浮起破坏模式、浮力计算以及抗浮控制技术三个方面,对近年来关于地下结构抗浮技术的研究成果进行了梳理。地下结构浮起破坏模式主要包括局部浮起破坏、局部整体浮起破坏和整体浮起破坏,且多发生在施工期。由大量试验可知,砂土层中地下结构所受浮力测试值与按阿基米德定律计算值吻合较好,黏土层中则存在差异。抗浮措施以前多注重被动抗浮,现在则更关注主动抗浮。同时在大量分析基础上,认为地下结构抗浮技术还存在施工期抗浮控制不够重视、地下水浮力测试不精准、抗浮设防水位确定不一致以及抗浮控制措施的耐久性和有效性不好保障等问题。在此基础上,针对如何控制施工期抗浮、创新浮力测试装置以及抗浮控制措施设计重点提出了建议,可为地下结构抗浮技术研究提供借鉴。With the continuous increase of underground engineering,the uplift failure of underground structures is becoming more and more prominent.The research on anti-buoyancy technology for underground structures is increasing rapidly.In this paper,the recent research on the upward floating failure mode,buoyancy force calculation and anti-buoyance control technology are summarized.The upward floating failure modes include local upward floating failure,whole-in-local upward floating failure and whole upward floating failure.The upward floating failure is mainly occurred during construction period.The buoyancy force of underground structure in sand is almost equivalent to the calculated value by Archimedes law,while the discrepancy is existed in clay on the basis of test researches.The emphasis was placed on passive anti-buoyancy measure previously,while more emphasis is placed on active anti-buoyancy measure now.And from the analysis,it can be seen that the following problems are still existed,insufficient emphasis on anti-buoyance control during construction,inaccurate testing on buoyancy force,in consistent determination of anti-buoyance design water level and the durability and effectiveness of anti-buoyance measures are difficult to guarantee.On this basis,the directions of future research for how to control anti-buoyance during construction period,innovating buoyance force testing device and the key points of anti-buoyance design are proposed.

关 键 词：富水地层 地下结构 浮力计算 上浮破坏 抗浮技术 

分 类 号：TU93[建筑科学—结构工程]