飽和粉土基坑工程復(fù)合土釘技術(shù)應(yīng)用研究
陳啟輝1，2；張鑫1，2；孫劍平1，2；郭秋英1；祝健2
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（1 山東建筑大學(xué)土木工程學(xué)院 濟南 250101；2 山東建大工程鑒定加固研究所 濟南 250014）［提要］介紹了復(fù)合土釘技術(shù)（微型樁+土釘）在飽和粉土基坑支護中控制建筑物變形的實用設(shè)計方法及施工措施。通過現(xiàn)場試驗，對比分析了復(fù)合土釘與普通土釘技術(shù)控制邊坡變形的效果。分析表明，采用復(fù)合土釘支護的邊坡變形比普通土釘支護的減小了40%～60%。實踐證明，復(fù)合土釘支護技術(shù)能有效控制基坑位移。［關(guān)鍵詞］鄰近建筑 飽和粉土 復(fù)合土釘(土釘＋微型樁) 控制變形Applied Study on Composite Soil Nailing Technique in Saturated Mealy Soil/Chen Qihui1，2, Zhang Xin1，2, Sun Jianping1，2, Guo Qiuying1, Zhu Jian2 (1 College of Civil Engineering，Shandong Jianzhu University, Jinan 250101, China; 2 Research Institute of Engineering Appraisal and Reinforcement, Shandong Institute of Architecture and Engineering, Jinan 250014, China)Abstract:The composite soil nailing technique is adopted in foundation pit support design for controlling buildings and slope displacement, and the measurement of construction in saturated mealy soil is introduced. The effect of technique of composite soil nailing is compared with general soil nailing by actual trail and observation, and it is concluded that the slope displacement is reduced 40%～60% using the technique. It is proved that the displacement of excavation is controlled effectively by composite soil nailing.Keywords:adjacent buildings; composite soil nailing; saturated mealy soil; controlling displacement*建設(shè)部科技計劃項目資助(基于變形控制的基坑組合支護技術(shù)的應(yīng)用研究(05-k1-14))。
