ZHOU Hang, KONG Gang-qiang, LIU Han-long, et al. Study of mechanical properties of X-section cast-in-place concrete pile under arbitrary direction lateral load (I): moment of inertia[J]. 2012, 33(9).
ZHOU Hang, KONG Gang-qiang, LIU Han-long, et al. Study of mechanical properties of X-section cast-in-place concrete pile under arbitrary direction lateral load (I): moment of inertia[J]. 2012, 33(9).DOI:
X-section cast-in-place concrete pile (XCC pile) can save concrete usage under the same pile perimeter. However
there were relative little studies of the lateral bearing capacity affected by X sectional shape. Based on three key control sectional parameters (outsourcing diameter
open space
and open arc angle)
the moment of inertia equation under arbitrary direction axis are built. Then
the moment of inertia influenced by sectional parameters are discussed. Finally
optimized X section type is proposed
of which the moment of inertia can be improved with the same areas or perimeter. The results show that
the moment of inertia increased with outsourcing diameter increasing
open arc degree decreasing
and open space decreasing. Hence
appropriate increase outsourcing diameter
and reduce opening angle and arc
can help improving the moment of inertia
thereby improving the overall bearing capacity of X-section cast-in-place concrete pile.