CAJ | 학술논문

针对深杂填土区存在成孔困难、桩基承载力不足的问题，提出旋挖钻机配合潜水钻机的成孔方法，并采用钻孔灌注桩后压浆施工技术提高桩基承载力。详细阐述了后压浆灌注桩的技术参数、施工工艺和异常问题的处理，并对其施工效果进行了分析和总结。结果表明，旋挖钻机配合潜水钻机能够解决深杂填土区成孔困难的问题；该技术极大地提高了桩基承载力，确保了结构的整体沉降安全，可有效提高经济效益。
침대심잡전토구존재성공곤난、장기승재력불족적문제，제출선알찬궤배합잠수찬궤적성공방법，병채용찬공관주장후압장시공기술제고장기승재력。상세천술료후압장관주장적기술삼수、시공공예화이상문제적처리，병대기시공효과진행료분석화총결。결과표명，선알찬궤배합잠수찬궤능구해결심잡전토구성공곤난적문제；해기술겁대지제고료장기승재력，학보료결구적정체침강안전，가유효제고경제효익。
The article contraposed the problem of boring hole difficulty,lack of capacity bearing in thick miscellaneous fill stratum,proposed the method of pore-forming used submersible drill combined with rotary drilling rig,and adopted post pressure grouting bored pile construction technology for improving the bearing capacity of pile foundation. The thesis elaborated about technical parameter of post grouting pile, construction technology,and the method to deal with abnormal phenomena problems,and also the construction effects were analyzed and summarized. The results indicated that the method of pore-forming used submersible drill combined with rotary drilling rig can solve the problem of boring hole difficulty in thick miscellaneous fill stratum,and the techniques could improve the capacity bearing of pile foundation greatly,the structural settlement was controlled,also improved economic returns effectively.