密肋復(fù)合墻結(jié)構(gòu)筏板基礎(chǔ)基底反力實(shí)測(cè)分析研究*
張蔭，袁洋，方運(yùn)澤，賀菁
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（西安建筑科技大學(xué)土木工程學(xué)院， 西安 710055）
［摘要］為了研究密肋復(fù)合墻結(jié)構(gòu)筏板基礎(chǔ)基底反力的分布規(guī)律，對(duì)基底反力進(jìn)行了現(xiàn)場原位測(cè)試。在現(xiàn)場測(cè)試數(shù)據(jù)的基礎(chǔ)上，繪制出各軸線的基底反力分布曲線，得到密肋復(fù)合墻結(jié)構(gòu)筏板基礎(chǔ)基底反力的分布規(guī)律以及影響基底反力分布的因素。分析結(jié)果表明：密肋復(fù)合墻結(jié)構(gòu)筏板基礎(chǔ)基底反力的分布與地基土的組成構(gòu)造、基礎(chǔ)的橫縱剛度及上部結(jié)構(gòu)與地基基礎(chǔ)的共同作用有關(guān)，在縱向軸線上基底反力實(shí)測(cè)曲線不呈現(xiàn)規(guī)律性的馬鞍形或凹拋物線形分布，在橫向軸線上基底反力實(shí)測(cè)曲線則呈現(xiàn)明顯的馬鞍形分布。［關(guān)鍵詞］密肋復(fù)合墻結(jié)構(gòu); 筏板基礎(chǔ); 基底反力; 原位測(cè)試中圖分類號(hào)：TU471 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2016)08-0083-05
Experimental study on subgrade reaction force of raft foundation of multi-ribbed composite wall structureZhang Yin, Yuan Yang, Fang Yunze, He Jing(School of Civil Engineering, Xi'an University of Architecture and Technology, Xi'an 710055, China)Abstract: In order to study distribution law of subgrade reaction force of raft foundation of multi-ribbed composite wall, in-situ test was carried out on subgrade reaction force. Based on the field test data, distribution curves of subgrade reaction forces along each axis were drawn, and distribution law and influencing factors of subgrade reaction force distribution were obtained for raft foundation of multi-ribbed composite wall. The results show that the distribution of subgrade reaction force of raft foundation of multi-ribbed composite wall is related to structure of soil composition, horizontal and vertical stiffness of foundation and interaction of superstructure and ground foundation. Field measured curve of subgrade reaction force in the vertical axis doesn't show regular saddle or concave parabola distribution, and field measured curve of subgrade reaction force in the horizontal axis features obvious saddle distribution.Keywords: multi-ribbed composite wall structure; raft foundation; substrate reaction force; in-situ test
*國家自然科學(xué)基金項(xiàng)目（51178385）。作者簡介：張蔭，教授，博士，Email:ZYXAJD205@163.com。
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