摘要
基于武罐高速公路楼房山隧道洞口滑坡,提出先高压注浆加固,稳定局部边坡,再通过有限差分软件Flac3D对普通抗滑桩和预应力锚索抗滑桩这两种支挡措施进行数值计算分析,对比施加支挡后的坡体变形量、桩身剪力及弯矩的合理分布,得出预应力锚索抗滑桩比普通抗滑桩受力更合理,可使桩的截面尺寸等的设计更加经济.
According to Loufangshan tunnel entrance landslide of Wudu-Guanzigou Expressway,the first high-pressure grouting is presented to firm the local slope,then the retaining structure of anti-slide piles with and without prestressed cables is simulated by Flac3D.The results including slope deformation,shearing force and bending moment distribution along pile shaft are compared.The comparison of numerical simulation indicated that the way of load bearing of anti-slide piles with prestressed cables is more reasonable,so the dimensions of the pile sections can be designed more economically.
出处
《兰州交通大学学报》
CAS
2012年第1期57-60,64,共5页
Journal of Lanzhou Jiaotong University
关键词
隧道洞口
滑坡
高压注浆
抗滑桩
FLAC3D
tunnel entrance
landslide
high-pressure grouting
anti-slide piles
Flac3D
