严寒地区冬季长螺旋钻孔灌注桩施工技术  

CONSTRUCTION TECHNOLOGY OF LONG AUGER BORED PILE IN WINTER IN SEVERE COLD AREA

作　　者：刘忠华 杨光辉 田新国 LIU Zhong-hua;YANG Guang-hui;TIAN Xin-guo(The Third Construction Engineering Company LTD.of China Construction Second Engineering Bureau,100070,Beijing,China)

机构地区：[1]中建二局第三建筑工程有限公司,北京100070

出　　处：《建筑技术》2023年第18期2232-2234,共3页Architecture Technology

摘　　要：长螺旋钻孔灌注桩作为《建筑业10项新技术》的一项,在桩基础施工中得到广泛应用。近些年长春市轨道交通建设中,长螺旋钻孔灌注桩施工较为常见,长春冬季较长,冻结期长达6个月,为保证进度避免不了进行冬期施工,在冬期施工中,混凝土保温、钢筋焊接保温、灌注桩施工完成的保温措施等均是长螺旋钻孔灌注桩冬期施工中需解决的问题。结合长春地铁2号线东延莲花山停车场工程对长螺旋钻孔灌注桩冬期施工进行分析总结,提出可行的冬期施工措施。As one of the Ten New Technologies in Construction Industry,long spiral bored pile has been widely used in pile foundation construction.In recent years,in the construction of Changchun rail transit,the construction of long spiral bored cast-in-place piles is relatively common.Changchun has a long winter,with a freezing period of up to 6 months.In order to ensure the progress,winter construction cannot be avoided.However,in winter construction,concrete insulation,reinforcement welding insulation,insulation measures for completion of cast-in-place pile construction are all problems to be solved in the winter construction of long spiral bored cast-in-place piles.This paper analyzes and summarizes the winter construction of long spiral bored piles in combination with the Lianhuashan parking lot project in the east extension of Changchun Metro Line 2,and puts forward feasible winter construction measures.

关 键 词：长螺旋 钻孔灌注桩 冬期施工 

分 类 号：TU74[建筑科学—建筑技术科学]