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李  艷，  周  磊，  蔣鎮(zhèn)華
(現(xiàn)代設(shè)計(jì)集團(tuán)上海建筑設(shè)計(jì)研究院有限公司，上海200041)

[摘要] 后注漿灌注樁的應(yīng)用已成為工程界關(guān)注的主要問(wèn)題之一，本文結(jié)合上海地區(qū)后注漿灌注樁的工程實(shí)踐，基于已有研究成果和上海軟土地區(qū)工程地質(zhì)條件，總結(jié)了后注漿灌注樁在上海地區(qū)應(yīng)用的若干經(jīng)驗(yàn)。本文列出了后注漿灌注樁的常用持力層，分析了合理注漿量和單樁極限承載力的關(guān)系，最后通過(guò)對(duì)比分析了后注漿灌注樁的經(jīng)濟(jì)技術(shù)指標(biāo)，為類(lèi)似工程及進(jìn)一步研究提供了借鑒。
[關(guān)鍵詞] 側(cè)阻端阻增強(qiáng)系數(shù)；注漿量；單一樁端注漿；樁端樁側(cè)復(fù)式注漿

Experiences of the Application of Post Grouting for Cast-in-site Pile in Shanghai
Li Yan, Zhou Lei, Jiang Zhenhua
( Xian Dai Architectural Design Group, Shanghai Institute of Architectural Design & Research Co. ,Ltd., Shanghai 200041, China)

Abstract: The application of post grouting for cast-in-site pile has been one of the most important problems for engineers to solve with. Based on the research result and the geological condition of soft soil in Shanghai, this article gives several experiences of the application of post grouting for cast-in-site pile in Shanghai. This article gives the supporting layer and the techno-economy, analyses the relation between reasonable quantity of grouting and the bearing capacity. The experiences can be used as a valuable reference for similar projects.
Keywords: side resistance and tip resistance enhanced coefficient, quantity of grouting; tip grouting; side and tip corubined grouting