对上、下部有不同标号要求的灌注桩施工处理方法的研究

Study on Construction Method of a Filling Pile with Different Marks at the Upper and Lower Parts

对于灌注上部、下部不同标号要求的灌注桩 ,必须合理安排初埋管深度 。

For a filling pile with different marks at the upper and the lower parts,its initial embedded length,location of bottom end of the vertical pipe and the right time to change the concrete mark must be arranged reasonably.