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（同濟(jì)大學(xué)地下建筑與工程系 上海 200092）
［提要］ 針對(duì)端承長(zhǎng)樁下長(zhǎng)短樁樁筏基礎(chǔ)這一新基礎(chǔ)類(lèi)型，運(yùn)用三維彈塑性有限元方法數(shù)值模擬了外荷載分級(jí)施加過(guò)程中，基礎(chǔ)中長(zhǎng)樁、短樁以及墊層的荷載和位移變化曲線以及長(zhǎng)短樁之間荷載的分擔(dān)關(guān)系，從而有利于更深刻地理解端承長(zhǎng)樁下長(zhǎng)短樁樁基礎(chǔ)的受荷與變形機(jī)理。
［關(guān)鍵詞］ 長(zhǎng)短樁 有限元 彈塑性 分級(jí)加載
Loading Process Analysis of Longshort Pile Foundation with Endbearing Long piles/Wang Wei, Yang Min(Department of Geotechnical Engineering, Tongji University, Shanghai 200092, China)
Abstract:As a new type of foundation, some properties of longshortpile pile raft foundation with endbearing longpiles under multistage loading process are simulated using three dimensional elastoplastic finite element method, which includes loaddisplacement relationship of long pile, short pile and cushion layer, and proportion of load carried by long pile and short pile. The mechanism between load and displacement of longshort pile foundation with endbearing longpiles can be comprehended profoundly.
Keywords:longshort pile; finite element; elastoplastic; multistage loading