钢筋混凝土桩是公路桥梁常用的基础型式之一,一般有钻孔桩、挖孔桩、打入桩(包括射水和震动下沉)、管柱及其它类型的桩。其中钻孔桩是近年来采用较多的一种型式。钢筋混凝土桩在季冻区公路桥梁上应用,发生不少冻胀现象,严重地影响交通运‘输,给国家造成很大经济损失,生产部门迫切要求研究解决。 Reinforced concrete piles are one of the commonly used basic types of highway bridges. Generally, there are bored piles, digging piles, driven piles (including water and shaking), pipe strings and other types of piles. Drilling pile which is more used in recent years, a type. The application of reinforced concrete piles to the highway bridges in the quarry area resulted in a lot of frost heaving, which seriously affected the transportation and transportation and caused great economic losses to the country. The production department urgently demanded study and settlement.