BOTDR在钻孔灌注桩静荷载试验中的应用研究

Application Research of Static Load Test in Bored Pile Based on BOTDR

研究了BOTDR分布式光纤传感技术在钻孔灌注桩静荷载试验中的应用,介绍了测量的整个试验过程,并根据试验数据分析计算了桩身轴力与桩侧摩阻力随深度分布,桩端阻力、桩侧摩阻力随桩顶荷载增加的变化规律,为施工工艺和成桩参数提供参考。

This paper studies the application of BOTDR( Brillouin optical time domain reflectometer)distributed optical fiber sensing technology in the static load test of bored pile,the whole process of test is introduced.According to the test data we analysed and calculated the variation of axial forces and pile side resistances along the depth and the variation of pile tip resistance and pile side resistance under the action of pile head loads to provide reference for technology and pile parameters of the construction.