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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)代設計集團上海建筑設計研究院有限公司,上海200041; 2 上?,F(xiàn)代建筑設計集團有限公司,上海200041; 3 現(xiàn)代設計集團華東建筑設計研究院有限公司,上海200002;4 武漢地質勘察基礎工程有限公司(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用,但目前在上海地區(qū)對樁端后注漿灌注樁單樁極限承載力的估算尚無合適的計算方法。本文根據(jù)上海地區(qū)十余個比較典型的樁端后注漿灌注樁樁基工程實例,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——灌注樁經驗參數(shù)上限法。
[關鍵詞] 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