抗浮锚杆设计规范对比及工程应用分析

The Comparison of the Design Specifications of Anti-Floating Anchor Rod and Its EngineeringApplication

目前有多本规范对抗浮锚杆的设计做出了规定,为明确各规范之间的差异,将各规范关于锚杆拉力、筋体截面积、锚杆锚固段与岩土层间的长度三个部分的内容进行对比分析,并通过两个不同地质条件的工程案例进行了抗浮锚杆设计,说明了抗浮锚杆的设计方法,将不同规范的设计结果进行了对比分析,为工程设计提供参考。结果表明:各规范关于抗浮锚杆的设计思路较为相似,但是在计算系数的规定上有所区别;不同的地质条件对锚杆拉力及筋体截面积的设计没有影响,但对锚杆长度的计算有所影响;针对同一个工程的抗浮锚杆,依据不同规范进行设计,其安全性和经济性有一定差异。

Currently,several specifications have made provisions for the design of anti-floating anchor rods.In order to clarify the differences between each specification,a comparative analysis was conducted on the three parts of each specification regarding to anchor rod tension,reinforcement cross-sectional area,and the length between the anchor rod anchoring section and the rock and soil layer.Two engineering cases with dfferent geological conditions were used for the design of anti-floating anchor rod.The paper explains the design method of anti-floating anchor rods.The design results of different specifications were compared and analyzed to provide a reference for engineering design.The results indicate that the design ideas for anti-floating anchor rods in various specifications are relatively similar,but there are differences in the provisions for calculating coefficients.Different geological conditions have no effect on the design of anchor rod tension and reinforcement cross-sectional area,but have an impact on the calculation of anchor rod length.There are certain differences in safety and economy when designing anti-floating anchor rods for the same project according to different specifications.