CM復(fù)合地基技術(shù)在特殊地質(zhì)條件下的應(yīng)用
趙蘇北1，徐勇華2，徐新宇1，方靜波1
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[摘 要] 對(duì)于深厚雜填土（松散，空隙率較大，且含有大量塊石和老設(shè)備基礎(chǔ)）的地質(zhì)條件，采用壓密注漿處理，可以提高雜填土的密實(shí)性和樁間土的承載力特征值，采用素混凝土樹(shù)根樁作為CM復(fù)合地基的增強(qiáng)體，既提高了復(fù)合地基的承載力，又能有效地減小基礎(chǔ)的沉降。通過(guò)工程實(shí)例介紹了CM復(fù)合地基的設(shè)計(jì)、計(jì)算方法，提出了根據(jù)變剛度調(diào)平的原則布置復(fù)合地基增強(qiáng)體以及復(fù)合地基増強(qiáng)體持力層選用強(qiáng)風(fēng)化巖的設(shè)計(jì)思路。[關(guān)鍵詞] CM復(fù)合地基; 褥墊層; 壓密注漿; 樹(shù)根樁; 處理后樁間土; 變剛度調(diào)平中圖分類(lèi)號(hào)：TU472.99 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)S2-0666-05Application of CM composite foundation technology in special geological conditionZhao Subei1, Xu Yonghua2 ,Xu Xinyu1,Fang Jingbo1
（1 Nanjing Huasen Architectural Engineering Designing Consultants Ltd, Nanjing 210005, China; 2 Nanjing Rain Pile Architectural Technology Co., Nanjing 210012, China）Abstract: As for the geological condition of deep miscellaneous fill (loose, bigger voidage and containing a large number of block stone and old equipment foundation), using pressure grouting secret can improve the compactness of miscellaneous fill and the characteristic value of bearing capacity of inter pile soil and using plain concrete root pile as CM composite foundation reinforcement can not only improve the bearing capacity of composite foundation but also reduce the settlement of composite foundation effectively. This article combining the engineering case introduces the designing and calculation method of CM composite foundation and put forward the designing ideas of laying out the composite foundation reinforcement by the principle of adjusting foundation rigidity to reduce differential settlement and selecting strong weathering rock for the bearing stratum of composite foundation reinforcement.Keywords: CM composite foundation; cushion; pressure grouting secret; tuberose pile; processed inter pile soil; adjusting foundation rigidity to reduce differential settlement作者簡(jiǎn)介：趙蘇北，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師, Email:njzhaosubei@163.com。
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