PTC管桩对路堤的上刺入量估算

探讨了无碎石垫层带帽PTC管桩对路堤的上刺入量估算方法,介绍了基本参数及具体的计算方法,着重阐述了桩土荷载分担计算、路堤破坏形式验算及上刺入量的估算,指出桩帽的存在能显著减小桩顶刺入量,且一定的桩间距存在一个最佳桩帽尺寸。

The estimation of upstroke amount on PTC pipe pile to embankment

This paper discusses the estimation method of upstroke amount on PTC pipe pile with cap which has no gravel mattress to embankment.It introduces the basic parameter and the particular calculation method.It pays more attention to talk about the sharing calculation of pile-earth loading,the checking calculation of embankment failure mode,the estimation of upstroke amount.Indicatting that the existence of pile cap can decrease the upstroke amount of pile head remarkable.There has a optimum dimension of pile cap on determinate space of the pile.