钻孔灌注桩特殊地质施工工艺对比研究与应用

Analysis and Application of Bored piles Construction Technologyon Special Geology

随着交通日益趋势下,桥梁桩基施工常常碰到斜面岩,钻机不能正常施工,也出现钻机偏离孔位,从而造成孔位偏位的迹象。为了解决斜面岩桩基施工问题,通过深入分析造成施工问题的原因,考虑提出两种处理措施:桩底浇筑高强度混凝土和分时间段回填石块。分别采用两个处理措施来解决斜面岩桩基施工产生的问题,结果表明,采用分时间段回填石块的方法能够效果较好,为以后提供了普及经验与研讨。

In order to solve the problem of the inclined rock pile foundation construction, according to analyze the reasons that contributed to the construction problem deeply, this paper provides two treating measures： by pou- ting high strength concrete to the pile bottom or by backfilling stones in for different time intervals. To solving the inclined rock pile foundation construction issue with two different technologies, the result shows that, the achieve- ment of backfilling stones in for different time intervals is better than the other one, the result of this paper is able to providing experience and discussion topics for those engineering that happens in the future.