当前随着公路桥梁施工的快速发展,往往对工程的工期都要求较为严格,而且在我国北方地区冬季较为寒冷,许多时候为了赶工期,往往处在土还没有完全化冻就开始进行施工。这样就需要充分的考虑到冻土区对于施工的影响。在进行桥梁施工时,需要应用钻孔桩施工技术来进行施工,这样就需要采取适当的防冻胀原理,从而避免因冻胀而对桥梁在使用过程中所造成的损害。现分析冻土区钻孔灌注桩施工的设计原则,并进一步对季节性冻土区钻孔灌注桩施工的工艺和方法进行了阐述。 At present, with the rapid development of highway bridge construction, the construction period is often stricter, and the winter is relatively cold in the northern part of our country. In many cases, in order to catch the construction period, the construction is often started when the soil has not completely thawed. This requires full consideration of the impact of permafrost on the construction. During bridge construction, the application of drilling pile construction technology needs to be carried out. Therefore, appropriate frost heaving inflation principle needs to be adopted so as to avoid the damage caused to the bridge due to frost heave during use. Now the design principle of bored pile construction in permafrost area is analyzed, and the process and method of bored pile construction in seasonal frozen soil area are also described.