秦皇岛某深基坑锚桩支护结构设计方法对比分析
Comparative Analysis of Design Methods of Anchor Pile Support Structure in a Deep Foundation Pit in Qinhuangdao

分别采用静力平衡法和等值梁法对秦皇岛某深基坑工程的单支点桩锚支护结构进行设计，对比分析了嵌固深度、锚杆轴向拉力和桩身最大弯矩设计值的计算值。结果表明在这类场地地层条件下，采用静力平衡法计算桩身最大弯矩利于工程安全，采用等值梁法确定嵌固深度和锚杆轴向拉力利于工程安全，这两种设计方法可为类似深基坑支护工程设计提供参考。
The static balance method and equivalent beam method are used to design the single fulcrum pile anchor support structure of a deep foundation pit project in Qinhuangdao. The calculation results of embedded depth, axial tension of anchor rod and design value of maximum bending moment of pile body are compared and analyzed. Under such site stratigraphic conditions, it shows that calculating the maximum bending moment of pile body by static balance method is beneficial to engineering safety. The equivalent beam method is used to determine the embedded depth and axial tension of anchor rod, which is conducive to engineering safety. These two design methods can provide reference for the design of similar deep foundation pit support engineering.