复打法沉管灌注桩施工中钢筋笼上浮原因的分析

Reason Analysis of Reinforcing Cage Up-floating in Construction of Tubes-sinking Poured Pile with Redriving Method

介绍了灌注桩施工过程中出现的钢筋笼上浮的现象,通过分析施工技术,采取了相应的措施,但未根本解决问题。通过对钢筋笼在混凝土中的受力分析,找到了不同地质条件下钢筋笼上浮的根本原因,为以后此类桩基的施工积累了经验,保证了桩的质量。

Introduced the reinforcing cage up-floating phenomenon in tube-sinking poured pile construction process, the construction technology was analyzed and corresponding measures were taken. However,the problems still existed. Based on the force analysis of reinforcing cage in the concrete,and find the reason of reinforcing cage up-floating root causes in different geological conditions. Accumulated experience to the subsequent pile foundation construction,and ensure the quality of piles.