基于声透法和钻芯法建立桩基混凝土测强曲线的研究

Research on the concrete strength of percussion drilling pile tested by crosshole sonic logging

依托大型桩基工程,利用声波透射法与钻芯法综合检测的受检桩声波波速数据和相对应的受检桩钻芯所取芯样抗压强度数据,建立基于声波波速的混凝土强度专用测强曲线,通过波速早期预知混凝土的强度,经过检验,证明该专用测强曲线应用于该项工程是切实可行的,做到了信息化施工,加强了工程质量的监控,为岩溶地区大型桩基工程施工和检测提供了新的思路。

Based on the large project, the fc curve was fitted by the data of velocity of ultrasonic wave and compression strength of con crete tested by crosshole sonic logging and core drilling method on the piles.The concrete strength could be early predicted by the wave ve locity.The fc curve was applied in this project and proved that was effective.It could realize inforrnatization construction and strengthen the supervision of construction quality, and provide a new thought for test and construction of pile foundation in karst area.