- 摘 要
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（廣州市設(shè)計院， 廣州 510620）
［摘要］如何解決抗浮問題是超深地下結(jié)構(gòu)設(shè)計過程中一個極其重要的環(huán)節(jié)，直接關(guān)系著工程施工與運營期間的安全。依托埋深46.5m的廣州地鐵某車站工程，通過資料調(diào)研梳理總結(jié)了抗浮設(shè)計中的重難點；對7種不同的抗浮方案(增加抗浮齒槽、疊合墻、抗拔錨桿、DN400微型勁性抗拔樁、DN1200大直徑抗拔樁、底框梁+抗拔樁、抗拔樁+降水泄壓的組合抗浮法)開展了優(yōu)化比選。結(jié)果表明，主、被動抗浮措施的組合抗浮法克服了傳統(tǒng)抗浮技術(shù)的一些不足；應用該方法可適當降低工程造價、縮短工期，且施工方便。研究成果及思路可為后續(xù)類似超深地下工程的抗浮設(shè)計提供借鑒。
［關(guān)鍵詞］超深地下結(jié)構(gòu)； 抗??； 方案優(yōu)化； 組合抗浮法
中圖分類號：TU398-7文獻標識碼：A文章編號：1002-848X(2020)10-0129-06
Exploration of anti-floating technology for super-deep underground structures
HUANG Junguang, LI Jianbin, QIN Yongsheng
(Guangzhou Design Institute， Guangzhou 510620， China)
Abstract:How to solve the anti-floating problem is an extremely important link in its design process of super-deep underground structures, which is directly related to the safety during the construction and operation of the project. Relying on a station project of Guangzhou Metro with a buried depth of 46.5m, the major and difficult points in anti-floating design were summarized through data surveys. Optimization comparison and selection were carried out on seven different anti-floating solutions (adding anti-floating grooves, superimposed walls, anti-pull anchors, DN400 miniature stiff anti-pull pile, DN1200 large-diameter anti-pull pile, bottom frame beam + anti-pull pile, composite anti-float method of anti-pull pile + pressure relief by precipitation). The results show that the combined anti-floating method with active and passive anti-floating measures overcomes some of the shortcomings of traditional anti-floating technology; the application of this method can appropriately reduce the project cost, shorten the construction period, and facilitate the construction. The research results and ideas can provide reference for the anti-floating design of similar super-deep underground projects.
Keywords:super-deep underground structure; anti-floating; scheme optimization; combined anti-floating method
作者簡介：黃俊光，碩士，教授級高級工程師，Email: huangjunguang@ gzdi.com。
