- 摘 要
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郭玉榮 鄒銀生 （湖南大學(xué)結(jié)構(gòu)工程研究所 長沙 410082）王兆軍 （金華城市規(guī)劃設(shè)計(jì)院 金華 321000）
[提要] 基坑支護(hù)結(jié)構(gòu)全過程內(nèi)力和變形分析的桿系有限元計(jì)算方法由于能模擬施工過程而在支護(hù)結(jié)構(gòu)設(shè)計(jì)中廣泛應(yīng)用，但通過分析發(fā)現(xiàn)，從土壓力分布的角度來說，目前所采用的梯形土壓力分布模式只能用于無限均布地面荷載作用下的均質(zhì)土基坑。本文對于有限地面荷載作用下的多層土基坑提出了合理的土壓力計(jì)算方法，并與梯形土壓力分布模式進(jìn)行了對比。
[關(guān)鍵詞] 基坑支護(hù) 土壓力分布 多層土Being able to simulate properly the sequence of construction of excavation, the finite element method based on the beam-column theory is becoming increasingly popular. But, adopting trapezoid soil pressure diagram makes the method just accurate in analyzing single layer soil excavation with infinite uniform surcharge. A new method of calculating soil pressure diagram for multi-layered soil excavation with finite surcharge is presented and the results are compared with those of the trapezoid soil pressure diagram.
Keywords: retaining structure;soil pressure diagram; multi-layered soil
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