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1. 发明授权

KR100842372B1 탑―다운 방식에 의한 프리텐션 쏘일네일 공법 有权
标题翻译：先天性土钉技术
公开(公告)号：KR100842372B1
公开(公告)日：2008-06-30
申请号：KR1020070023265
申请日：2007-03-09
申请人： 극동엔지니어링(주) , 주식회사 동명건설엔지니어링
发明人： 최영근 , 정종기 , 신종수
IPC分类号： E02D29/02 , E02D29/045 , E02D5/80 , E02D3/12
CPC分类号： E02D29/0233 , E02D3/12 , E02D5/801 , E02D29/045 , E02D2250/0046
摘要： A pretension soil nail method using top-down construction method is provided to improve shear strength of soil by vertically cutting a slope and exerting pretension to the pretension soil nail fixed by a fixing nut, thereby minimizing expected soil displacement that may occur after construction. A pretension soil nail method using top-down construction method comprises the steps of: vertically cutting a slope in top-down method, and fixing the cutting slope by performing primary soil cement injection to the cutting slope; boring a hole to which a pretension soil nail is fitted onto the cutting slope fixed by the primary soil cement job in an upward direction with respect to a horizontal plane; assembling the pretension soil nail and inserting the assembly into the hole; filling filler into an injection pipe of the pretension soil nail inserted to the hole; installing a grating plate(14) whose upper and lower parts are formed in a slant line on an upper side of the pretension soil nail, and installing a bearing plate; after the filler is cured, exerting pretension to the pretension soil nail, fixing the pretension soil nail with a fixing nut(16), for finishing by conducting secondary soil cement injection.
摘要翻译：提供了一种采用自上而下施工方法的预张力土钉法，通过垂直切割坡面并对由固定螺母固定的预紧土钉施加预张力来提高土壤的剪切强度，从而最小化施工后可能发生的预期土壤位移。采用自上而下施工方法的预张力土钉法，包括以自下而上的方式垂直切割斜坡，并通过对切割坡口进行初级土壤水泥注入固定切割坡度; 在一个相对于水平面向上的方向上钻一个预紧土钉装入到由主土壤水泥作业固定的切割斜面上的孔; 组装预紧土钉并将组件插入孔中; 将填料填充入插入孔中的预紧土钉的注射管中; 安装格栅板（14），其上部和下部在预紧土钉的上侧以倾斜线形成，并安装支承板; 在填料固化后，对预紧土钉进行预张力，用固定螺母（16）固定预紧土钉，进行二次土壤水泥注浆。

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