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黑龙江省地处我国北方边陲,冬季时间长,气温低,不利于混凝土施工。对于跨江大桥施工,由于桥型复杂,施工十分困难,导致整体施工工期紧张。因此,近年来施工单位为保证跨江大桥工期,越来越多地利用冬季进行下部钻孔桩施工,以确保建设工期。旋挖钻机在高寒低温环境下的钻孔桩施工工法,是经过几年冬季施工实践,积累的一套行之有效的冬季施工工法,具有施工组织简单,成本低,效率高,成孔质量好,安全性高,经济效益佳等特点。
Heilongjiang Province is located in the northern border of China, long winter time, low temperature, is not conducive to concrete construction. For cross-river bridge construction, due to the complexity of the bridge, the construction is very difficult, resulting in the overall construction period of tension. Therefore, in recent years, construction units to ensure cross-river bridge construction period, more and more use of the lower bored pile construction in winter to ensure the construction period. Drilling pile construction method of rotary drilling rig in cold and high temperature environment is a set of effective winter construction method after several years of winter construction practice. It has the advantages of simple construction, low cost, high efficiency, good hole quality , High safety, good economic benefits and so on.