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（天津市天友建筑設(shè)計(jì)股份有限公司， 天津 300384）

［摘要］某工程項(xiàng)目接近完工時(shí)發(fā)現(xiàn)其有較大上浮變形，對(duì)此工程抗浮修復(fù)的過(guò)程進(jìn)行了詳細(xì)介紹。通過(guò)對(duì)事故原因的查找，分析了保證預(yù)應(yīng)力管樁抗拔效果的關(guān)鍵措施。在首次抗浮方案中嘗試采用樁心內(nèi)插錨桿的方法，探討了樁與錨桿連接的可行性。由于錨桿施工過(guò)程中出現(xiàn)異常，又進(jìn)行了進(jìn)一步的加固，介紹了二次補(bǔ)充處理方案采取的增加壓重和增加剛度措施。經(jīng)過(guò)兩次加固后，建筑的抗浮問(wèn)題得到徹底解決。

［關(guān)鍵詞］預(yù)應(yīng)力管樁; 抗拔; 錨桿; 壓重; 抗浮加固

中圖分類(lèi)號(hào)：TU318.2    文獻(xiàn)標(biāo)識(shí)碼：A    文章編號(hào)：1002-848X(2014)16-0077-04

Restoration practice and experience summary of a anti-floating engineering

Liu Xiangdong

 (Tenio Tianjin Architecture and Engineering Co., Ltd., Tianjin 300384, China)

Abstract: A project has large uplift deformation before completion and the anti-floating repair process was introduced in detail.Based on the search of the accident cause, key measures to ensure  the uplift effect of the precast pipe pile were analyzed. In the first anti-floating scheme, pile inserted anchor was adopted and the connection feasibility between the pile and the anchor was discussed. Due to abnormal conditions in anchor construction process, further reinforcement measures were conducted. Measures of increasing adding weight and stiffness were introduced in second supplementary treatment scheme. After two reinforcements, the anti-floating problem of the building was completely resolved.

Keywords: precast pipe pile; uplift; anchor; adding weight; anti-floating reinforcement

作者簡(jiǎn)介：柳向東，學(xué)士，高級(jí)工程師，總工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師,Email:liuxiangdong@tenio.com。