深厚软土基坑软土锚固旋喷锚索计算初探  

Preliminary study on calculaiton of jet grouting anchor cable fixed in soft soil in deep soft soil foundation pit

作　　者：周汉香 周越洲 方小丹 ZHOU Hanxiang;ZHOU Yuezhou;FANG Xiaodan(Architectural Design&Research Institute Co.,Ltd.,South China University of Technology,Guangzhou 510641,China)

机构地区：[1]华南理工大学建筑设计研究院有限公司,广州510641

出　　处：《建筑结构》2023年第21期139-143,126,共6页Building Structure

摘　　要：基于香港科技大学(广州)深厚淤泥基坑工程实践,对深厚软土基坑的桩锚支护结构建立了分析模型。采用剪切位移法计算全长位于软土的旋喷锚索的位移和刚度,并求解出对应桩锚节点处的位移。对多个软土基坑工程,采用剪切位移法计算软土锚固旋喷锚索的轴力与位移,并将计算值与实测值进行比对,两者总体吻合良好,表明剪切位移法可较好地揭示深厚软土基坑中全长位于软土的旋喷锚索的受力、变形机理。Based on the engineering practice of deep silt foundation pit of HKUST in Guangzhou,an analytical model was established for the pile anchor retaining structure of deep soft soil foundation pits.The shear displacement method was used to calculate the displacement and stiffness of the jet grouting anchor cable located with its entire length in soft soil,and the displacement at the corresponding pile anchor node was solved.For multiple soft soil foundation pit projects,the shear displacement method was used to calculate the axial force and displacement of the jet grouting anchor cable fixed in soft soil,and the calculated values were compared with the measured values.The overall agreement between the two is good,which shows that the shear displacement method can better reveal the stress and deformation mechanism of the jet grouting anchor cable located in the deep soft soil foundation pit with its entire length in the soft soil.

关 键 词：深厚软土基坑 剪切位移法 旋喷锚索 桩锚支护结构 

分 类 号：TU473.2[建筑科学—结构工程]