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(1 重慶大學(xué)土木工程學(xué)院  400045;2 貴州大學(xué)土木建筑工程學(xué)院  貴陽(yáng) 550003)
【提要】  數(shù)值模擬的結(jié)果顯示，剛度較弱的巖層地基上的擴(kuò)展式獨(dú)立基礎(chǔ)，其基底反力分布的非線性特征非常顯著，基底反力在基礎(chǔ)邊緣較集中。假定基底反力為均勻或線性分布來(lái)分析基礎(chǔ)結(jié)構(gòu)的受力情況，結(jié)果會(huì)與巖基上擴(kuò)展基礎(chǔ)的實(shí)際工作狀態(tài)有較大的差異，可能使基礎(chǔ)處于偏不安全的工作狀態(tài)。
【關(guān)鍵詞】  巖層地基  擴(kuò)展基礎(chǔ)  基底反力  數(shù)值模擬
Analysis on Reaction Pressures Distribution of Expansive Isolated Foundation on Weak Batholite/Zhu Aijun1,Huang Zhihong2,Cai Changan2,Yang Shizhong2(1 College of Civil Engineering,Chongqing University,Chongqing 400045,China;2 College of Civil ngineering,Guizhou University of Technology,Guiyang 550003,China)
Abstract:The pressures beneath spread foundation submit to nonlinear distribution ormally.The result of numerical analysis shows that,for the spread foundation on weak rock foundation,the distribution of pressures beneath foundation is high nonlinear and most of the pressures centralize in edge.The foundation may be unsafe if the calculation results with traditional method based on the assumption of the linear distribution of the pressure are used in design.
Keywords:rock foundation;spread foundation;pressure beneath foundation;numerical simulation