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    陳啟輝  孫劍平  柏宏宇
    （山東建工學(xué)院土木工程學(xué)院  濟(jì)南 250014）

[提要]  針對(duì)土釘支護(hù)技術(shù)在軟土基坑中存在邊坡位移較大、安全程度降低等問題，確定在軟土和填土基坑中采用復(fù)合土釘支護(hù)技術(shù)進(jìn)行基坑支護(hù)方案的設(shè)計(jì)與施工，以限制基坑邊坡的變形。通過現(xiàn)場(chǎng)試驗(yàn)與監(jiān)測(cè)，對(duì)比分析了普通土釘支護(hù)與復(fù)合土釘支護(hù)效果。工程實(shí)踐證明，復(fù)合土釘支護(hù)技術(shù)能有效地控制基坑位移。
[關(guān)鍵詞]  深基坑支護(hù)  復(fù)合土釘  雜填土  淤泥質(zhì)土

When soil nailing technique is applied in soft soil, the displacement of slope of foundation pits is increased and the security of slope is brought down. The composite soil nailing technique is adopted for design and construction in the soft soil and fills foundation pits, and the effect of composite soil nailing is compared with general soil nailing. In practice, displacement of excavation pits is controlled effectively by composite soil nailing.
Keywords: foundation pits; deep excavation support; composite soil nailing; fills; muddy clay