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    岳建勇¹，黃紹銘²，王衛(wèi)東³，吳江斌³，夏焰光⁴
    （1 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; 2 上?，F(xiàn)代建筑設(shè)計(jì)集團(tuán)有限公司，上海200041; 3 現(xiàn)代設(shè)計(jì)集團(tuán)華東建筑設(shè)計(jì)研究院有限公司，上海200002；4 武漢地質(zhì)勘察基礎(chǔ)工程有限公司(滬)，上海200063）

[摘要] 由于樁端后注漿灌注樁可彌補(bǔ)常規(guī)灌注樁自身的不足，因而樁端后注漿灌注樁在上海軟土地區(qū)逐步得到廣泛的工程應(yīng)用，但目前在上海地區(qū)對(duì)樁端后注漿灌注樁單樁極限承載力的估算尚無合適的計(jì)算方法。本文根據(jù)上海地區(qū)十余個(gè)比較典型的樁端后注漿灌注樁樁基工程實(shí)例，提出了上海地區(qū)的樁端后注漿樁單樁極限承載力的估算方法——灌注樁經(jīng)驗(yàn)參數(shù)上限法。
[關(guān)鍵詞] 樁端后注漿灌注樁；灌注樁；單樁極限承載力

Discussion on Estimation Calculation Method of the Ultimate Bearing Capacity of a Single Base-grouting Bored Pile in Shanghai Soft Soil Area
Yue Jianyong¹,  Huang Shaoming²,  Wang Weidong³,  Wu Jiangbin³,  Xia Yanguang⁴
(1Xian Dai Architectural Design Group, Shanghai Institute of Architectural Design & Research Co. ,Ltd., Shanghai 200041, China; 2 Shanghai Xian Dai Architectural Design( Group) , Co., Ltd. , Shanghai   200041; 3 Xian Dai Architectural Design Group, East China Architectural Design&Research Institute Co. , Ltd. , Shanghai  200002, China; 4 Shanghai Branch of Wuhan Ceological Prospection & Foundation Engineering Company, Shanghai  200063, China)

Abstract: Because of the shortcomings of bored piles in Shanghai soft soil area, base-grouting bored piles have been widely used in the foundation engmeering of buildings, but there is not a suitable calculation method of the ultimate bearing capacity of a single base-grouting bored pile in Shanghai soft soil area. Based on the experience of tens of pile foundations in which base-grouting bored piles are used, a new upper boundary method of empirical parameter has been put forward to estimate the ultimate bearing capacity of a single base-grouting bored pile.
Keywords: base-grouting bored pile; bored pile; ultimate bearing capacity of a single pile