车行地道中锚杆—围护桩联合抗浮方式的应用

对泉州市某大跨度车行地道巧妙地利用土层锚杆结合既有围护桩进行抗浮设计。采用局部抗浮稳定控制锚杆参数、整体抗浮稳定优化锚杆数量的设计思路,并应用于工程实践。根据该工程实例,采用全长黏结型锚杆,并巧妙地采用围护桩顶圈梁嵌入结构侧壁的构造措施,可纵向每2m节约锚杆3根,经济效益是明显的。

Application of the Anti-floating Combined with Method of Anchor Bolts & Guard Posts in Vehicle Tunnel

Taking a large span vehicle tunnel for example, the anti-floating design of soil anchors combined with existed retaining piles ingeniously is presented in the paper. And the design idea of partial anti-floating stable controlling anchors parameters and overall anti-floating stable optimizing anchors’ quantities is adopted and applied in the engineering practice. The economic efficiency is obvious of saving 3 anchors at every 2 m vertically when adopting the overall binding anchor and the top gird of guard post embedding the side wall of structure.