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“钢套筒跟进灌注桩成孔施工技术”达国际先进水平本刊讯中建二局“钢套筒跟进灌注桩成孔施工技术”日前通过鉴定,达到国际先进水平。该技术成功破解了极不均匀地质分层条件下灌注桩成孔工艺难题,有效地避免了成孔过程中缩颈、塌孔、漏浆、周围泥浆涌入孔内等现象的发生。与传统不增加钢套筒冲击成孔技术相比,该技术有效降
“Steel sleeve follow-up perfusion pile into the hole construction technology ” reached the international advanced level The journalIntermediate twoIntermediate “steel sleeve follow-up perfusion pile into the hole construction technology ” passed the appraisal, reached the international advanced level. The technique successfully cracked the difficult problem of the hole making process of bored piles under extremely uneven geological stratification conditions and effectively avoided the occurrence of necking, collapse holes, leaking slurry and influx of surrounding mud into the hole during the forming process. Compared with the traditional method of not increasing the impact of the steel sleeve into the hole, the technology effectively reduces