A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Subway vehicle unfavorable geology CFG pile foundation treatment construction method
The invention discloses a subway vehicle unfavorable geology CFG pile foundation treatment construction method. The subway vehicle unfavorable geology CFG pile foundation treatment construction method comprises the following steps that (S1) a drilling machine drills a formed hole to a designed elevation; (S2) after drilling is conducted to the designed elevation, drilling is stopped, and a drill rod is lifted while concrete is poured into a pile hole in a pressing mode till the concrete reaches the designed pile top elevation; and (S3) soil between piles is excavated, the pile cutting position of a pile head is determined after the soil between the piles is cleaned, a pile head cutting device is installed after a cutting hole which is coaxial with a CFG pile is formed in the pile top, and after installation is completed, the pile head cutting device is started, so that the pile head cutting device conducts cutting in the direction from the cutting hole to the outer wall of the pile head and from the outer wall of the pile head to the interior of the cutting hole in the radial direction of the pile head, when the sum of the cutting depths in the two cutting directions is larger than the difference value of the radius of the pile head and the radius of the cutting hole, cutting in the radial direction of the pile head is stopped, and the pile head cutting device conducts 360-degree circumferential cutting in the circumferential direction of the pile head. The subway vehicle unfavorable geology CFG pile foundation treatment construction method has the effects that the working efficiency is improved, and the construction period is shortened.
本申请公开了一种地铁车辆不良地质CFG桩地基处理施工方法，其包括以下步骤，S1、钻机钻进成孔至设计标高；S2、钻孔至设计标高后，停止钻进，边向桩孔内压灌砼边提升钻杆，直至砼达到设计桩顶标高；S3、桩间土开挖，完成桩间土清理后确定桩头的截桩位置，于桩顶开设与CFG桩同轴的切孔后，安装桩头切除装置，安装完成后，启动桩头切除装置，使桩头切除装置沿桩头的径向从切孔内向桩头外壁的方向以及从桩头外壁向切孔内的方向进行切除，当两个切割方向的切割深度之和大于桩头半径与切孔半径的差值后，停止沿桩头径向的切除，使桩头切割装置绕桩头的周向进行360度圆周式切除。本申请具有提升了工作效率，缩短了施工工期的效果。
Subway vehicle unfavorable geology CFG pile foundation treatment construction method
The invention discloses a subway vehicle unfavorable geology CFG pile foundation treatment construction method. The subway vehicle unfavorable geology CFG pile foundation treatment construction method comprises the following steps that (S1) a drilling machine drills a formed hole to a designed elevation; (S2) after drilling is conducted to the designed elevation, drilling is stopped, and a drill rod is lifted while concrete is poured into a pile hole in a pressing mode till the concrete reaches the designed pile top elevation; and (S3) soil between piles is excavated, the pile cutting position of a pile head is determined after the soil between the piles is cleaned, a pile head cutting device is installed after a cutting hole which is coaxial with a CFG pile is formed in the pile top, and after installation is completed, the pile head cutting device is started, so that the pile head cutting device conducts cutting in the direction from the cutting hole to the outer wall of the pile head and from the outer wall of the pile head to the interior of the cutting hole in the radial direction of the pile head, when the sum of the cutting depths in the two cutting directions is larger than the difference value of the radius of the pile head and the radius of the cutting hole, cutting in the radial direction of the pile head is stopped, and the pile head cutting device conducts 360-degree circumferential cutting in the circumferential direction of the pile head. The subway vehicle unfavorable geology CFG pile foundation treatment construction method has the effects that the working efficiency is improved, and the construction period is shortened.
本申请公开了一种地铁车辆不良地质CFG桩地基处理施工方法，其包括以下步骤，S1、钻机钻进成孔至设计标高；S2、钻孔至设计标高后，停止钻进，边向桩孔内压灌砼边提升钻杆，直至砼达到设计桩顶标高；S3、桩间土开挖，完成桩间土清理后确定桩头的截桩位置，于桩顶开设与CFG桩同轴的切孔后，安装桩头切除装置，安装完成后，启动桩头切除装置，使桩头切除装置沿桩头的径向从切孔内向桩头外壁的方向以及从桩头外壁向切孔内的方向进行切除，当两个切割方向的切割深度之和大于桩头半径与切孔半径的差值后，停止沿桩头径向的切除，使桩头切割装置绕桩头的周向进行360度圆周式切除。本申请具有提升了工作效率，缩短了施工工期的效果。
Subway vehicle unfavorable geology CFG pile foundation treatment construction method
地铁车辆不良地质CFG桩地基处理施工方法
XU QIANG (author) / LI WENSHENG (author) / LUO YUWEI (author) / CHENG ZONGMING (author) / LIU XIAOTAO (author) / TANG XIONGFENG (author) / HE JIANYU (author) / LIU XUYANG (author)
2021-10-26
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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