大孔径扩底桩设计计算

The Design of Expanding Stake of the Big Diameter

大孔径扩底桩具有一柱一桩、传力明确、施工方便、安全可靠且工程造价低的特点.在设计计算过程中,可通过对地面处桩顶水平位移及转角的计算,求得地面处桩身的变位,再进行地面下任一深度桩身内力的计算,最后对单桩进行竖向受压承载力、桩侧水平压力及桩稳定性方面的验算,从而完成桩的配筋设计.

Expanding stake of the big diameter, which has characteristics of a pillar with a stake, definite transmitting force, convenient construction, safe credibility and low cost, can be designed by computering the horizontal displacement and the top position of stake so as to determine the deflection of stake, then computering the internal force of beneath grounnd level. Finally perpedicular carrying capacity, horizontal pressure and the stake stability can be checked up.