（中国建筑西北设计研究院，西安710003）

［提要］  延安市体育场采用人工挖孔大直径嵌岩灌注桩，从桩基受力机理方面分析了采用嵌岩桩的优越性。与扩底灌注桩相比，嵌岩桩充分发挥了嵌岩段的侧壁摩阻力和桩端阻力，节省了桩端扩底需开凿粗砂岩的工作量，避免了因扩底而丧失斜面高度范围内的侧阻力。嵌岩桩能大幅提高单桩竖向承载力，减少柱下布桩的数量和承台尺寸。单桩竖向抗压静载荷试验检验了设计方法的正确性。介绍了该桩的设计参数及静载荷试验结果，可供同类工程设计时参考。

［关键词］嵌岩灌注桩；扩底灌注桩；试桩；锚；静载荷试验

 

Design of Large-diameter Anchor Compresol Pile Foundation in Yan"an Stadium/Tian Min（China Northwest Building Design Research Institute, Xi"an 710003，China）

Abstract:The large-diameter anchor compresol pile is used in the project of Yan"an stadium. The advantage of using anchor pile from mechanics mechanism is analyzed. The anchor compresol pile can exert the lateral resistance and end resistance of anchor segment fully, reduce the working capacity of cutting grotty rock comparing with pedestal compresol pile and avoid losing lateral resistance because of club-footed within the inclined planed height. Anchor compresol pile can raise the single pile vertical load-bearing capacity largely. The test shows that the pile design is correct through sign pile vertical compressive resistance static test. The design parameter of these piles and results of static test are introduced. It should be a design consultation to the same kind of engineering.

Keywords:anchor compresol pile； pedestal compresol pile； pile test； anchor pile； static test