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    楊  敏    張俊峰
    （同濟(jì)大學(xué)地下建筑與工程系  上海 200092）

[提要]  基于筏-樁-土相互作用理論的計(jì)算分析，給出了軟土地區(qū)的樁基沉降計(jì)算實(shí)用方法和公式，包括樁筏基礎(chǔ)的平均沉降、差異沉降和基礎(chǔ)板縱向整體彎矩，減少沉降樁基礎(chǔ)的沉降以及柔性樁（如水泥土攪拌樁）基礎(chǔ)的沉降公式，大大簡(jiǎn)化了樁基沉降的計(jì)算，并可得到較合理的計(jì)算結(jié)果。
[關(guān)鍵詞]  樁基礎(chǔ) 沉降 差異沉降 基礎(chǔ)彎矩

An approach and practical formulas of the settlement of pile foundation in soft clay are presented based on the interaction analysis of pile-raft-soil system by using the method of the boundary integration for piles embedded in elastic half space. The total settlement, differential settlement and moment of pile raft foundation and the settlement of reducing-settlement pile foundation of a number of buildings in Shanghai are calculated as the examples of the application and show a good feasibility and easiness of the utilization.
Keywords: pile foundation; settlement; soft  caly