- 摘 要
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(浙江省建筑設(shè)計研究院，杭州 310006)
［摘要］首先采用軟土本構(gòu)模型——各向異性三屈服面流變模型，編制了基坑有限元程序，研究了基坑開挖過程中無周邊留土和有周邊留土情況下圍護(hù)結(jié)構(gòu)的水平位移、土體的位移(包括墻后土體的側(cè)向位移、地表沉降和地表隆起)、支撐力隨開挖過程的發(fā)展變化規(guī)律，探討了基坑工程中的流變效應(yīng)及其對圍護(hù)結(jié)構(gòu)位移和支撐力的影響。同時應(yīng)用實(shí)例對新模型及有限元程序進(jìn)行了驗(yàn)證，其計算值和實(shí)測值吻合。
［關(guān)鍵詞］各向異性三屈服面流變模型；軟土地基；流變效應(yīng)；基坑開挖
Finite element analysis on rheology behavior of deep excavation in soft clay
Yuan Jing, Liu Xingwang, Shi Zuyuan, Yang Xuelin, Yi Deqing(Zhejiang Province Institute Architecture Design and Research,Hangzhou 310006, China)
Abstract:A finite element rheology program about deep excavation is presented to analyze the rheology behavior of soft clay. The model is an anisotropically trinal-yield surface rheology model. The deformation, plastic and damage zones and subsidence in the situations between holding peripheral soil and not holding peripheral soil are discussed during excavation. A field example is presented to check the finite element program. The calculating results accord with measure values well. This illustrates the program can describe the rheology behavior of soft clay during excavation.
Keywords:anisotropically trinal-yield surface rheology model; soft clay; rheology behavior; foundation pit; deep excavation
作者簡介：袁靜，博士，高級工程師，一級注冊結(jié)構(gòu)/土木(巖土)工程師，Email:Ojin9999@sina.com。
參考文獻(xiàn)
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