884aa四虎影成人精品,99久久国产综合精品女图图等你,97在线观看永久免费视频,久久精品国产精品亚洲38,ⅵdeodesetv性欧美

(1 同濟(jì)大學(xué)地下建筑與工程系 上海 200092； 2 河北工程學(xué)院建筑與工程系 邯鄲 056038)
［提要］ 通過對設(shè)有褥墊層的樁體復(fù)合地基承擔(dān)豎向荷載的理論分析，對褥墊層厚度對樁土協(xié)調(diào)變形的作用和樁土應(yīng)力比的調(diào)整關(guān)系進(jìn)行了研究，提出了基于樁土褥墊層共同作用理論的復(fù)合地基優(yōu)化設(shè)計方法。通過現(xiàn)場試驗，對復(fù)合地基工程優(yōu)化設(shè)計進(jìn)行驗證，證明了方法的經(jīng)濟(jì)性和合理性。
［關(guān)鍵詞］ 復(fù)合地基 褥墊層 目標(biāo)應(yīng)力比 共同作用 優(yōu)化設(shè)計
Optimum Design Method of Composite Foundation Based on Cooperation of Pilesoilcushion System/Li Jinjun1,Shi Sanyuan2,Huang Maosong1(1 Department of Geotechnical Engineering,Tongji University,Shanghai 200092,China； 2 Institute of Architectural Engineering,Hebei Engineering University,Handan 056038,China)
Abstract:Through the theoretical analysis of the pile composite foundations transfering t
he vertical load under cushion, the interaction of the pile soil deformation and the
 thickness of cushion is studied. The relationship of the thickness of cushion and the pile soil stress ratio is got. A new optimum design method of composite foundation is put forward based on the cooperation of pilesoilcushion system in the composite foundation. This method is tested by the single pile soilcement composite foundation loading tests which conducted with the cushions of different thickness. The method is economical and available.
Keywords:composite foundation; cushion; target stress ratio;cooperation; optimum design