摘要
复合基坑支护施工很少对基坑支护抗浮锚杆耐久性进行分析,导致基坑支护稳定性较差。文中对软土地层地下通道SMW工法桩复合基坑支护技术进行研究,对基坑支护抗浮锚杆耐久性进行分析,使其满足结构安全要求。对支护顶部附加荷载进行计算,以提升基坑支护抗变形能力。使用SMW工法进行桩型钢施工,完成复合基坑支护设计。结果表明,研究方法围护桩桩体挠曲位移的动态变形值总体较小,与对比方法相比分别减少2.18、4.73 mm,说明应用该研究方法的基坑支护稳定性更高。
In the process of composite foundation pit support construction,the durability of foundation pit support resistance floating anchor is rarely analyzed,which leads to the poor stability of foundation pit support.In this regard,the research on SMW pile composite foundation pit support technology of soft land underground channel is proposed.First,the durability of foundation pit support is analyzed to meet the structural safety requirements.Then the additional load on the support top is calculated to improve the deformation resistance of the foundation pit.Finally,SMW method is used to complete the composite foundation pit support design of pile steel construction.The results show that the dynamic deformation of the displacement is small,2.18 mm and 4.73 mm less than the comparison method.It shows that the stability of the foundation pit support in the research method is higher.
作者
廖志成
Liao Zhicheng(Fujian Zhaoxiang Airport Construction Co.Ltd.,Xiamen,Fujian 361000)
出处
《江西建材》
2023年第10期268-270,共3页
Jiangxi Building Materials
关键词
软土地层
地下通道
SMW工法
基坑支护
Soft land layer
Underground passage
SMW method
Foundation pit support
