A DISCUSSION ON THE ADJUSTMENT FACTOR OF SEISMIC BEARING CAPACITY FOR CFG-PILE COMPOSITE FOUNDATION

In seismic fortification zones, foundation strengthened by CFG piles needs to be checked for seismic resistance. In view of the fact that there was no specific provisions on adjustment coefficients of seismic bearing capacity for CFG-pile composite foundation in relevant regulations and codes, the paper concluded different methods to determine adjustment coefficients of seismic bearing capacity for CFG-pile composite foundation by combining and analyzing the design and calculation theory of existing regulations and specifications. Through comparative analysis, it was found that in the design and calculation of CFG-pile composite foundation, the adjustment factor ζ'_a of seismic bearing capacity for CFG-pile composite foundation was 1.3, which was more reasonable.