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A platform for research: civil engineering, architecture and urbanism
Pile foundation steel casing construction method under bare rock geological condition
The invention belongs to the technical field of pile foundation steel casing construction methods, and particularly relates to a pile foundation steel casing construction method under a bare rock geological condition, which comprises the following steps: S1, calibrating a vertical projection range of a steel casing on the surface of a bare rock, and implanting a plurality of positioning steel bars into the bare rock around the edge of the projection range, the plurality of positioning steel bars form a positioning cage for sleeving and fixing the bottom end of the steel casing; s2, the top end of the steel casing is installed on a construction platform in a limited mode through a guide frame, the position and perpendicularity of the steel casing are detected through a total station, the position and perpendicularity of the steel casing are adjusted through the guide frame according to the deviation value of measured data and standard data, the steel casing is hoisted to enable the bottom end of the steel casing to be embedded into a positioning cage, and the steel casing is fixed; the two ends of the steel casing are limited to prevent the steel casing from deviating and displacing; s3, the rotary drilling machine enables a rotary drilling part of the rotary drilling machine to move downwards along the steel casing from the construction platform, so that the rotary drilling part conducts drilling guide hole operation on the bare rock by means of limiting and protection of the steel casing; the installation precision of the steel casing under the bare rock geological condition can be improved.
本发明属于桩基钢护筒施工方法技术领域，具体涉及一种裸岩地质条件下的桩基钢护筒施工方法，S1：在裸岩表面标定钢护筒的垂直投影范围，并环绕该投影范围的边缘将若干定位钢筋植入裸岩中，使若干定位钢筋组成套固钢护筒底端的定位笼；S2：钢护筒的顶端通过导向架限位安装于施工平台，通过全站仪对钢护筒的位置以及垂直度进行检测，并根据实测数据与标准数据的偏差值，通过导向架对钢护筒的位置和垂直度进行调节，吊装钢护筒使其底端嵌入定位笼内，使钢护筒的两端均受限制防止其偏斜位移；S3：旋挖机自施工平台上将其旋挖部沿钢护筒下行，使旋挖部依托钢护筒的限位和防护对裸岩进行挖引孔作业；其能提高在裸岩地质条件下钢护筒的安装精度。
Pile foundation steel casing construction method under bare rock geological condition
The invention belongs to the technical field of pile foundation steel casing construction methods, and particularly relates to a pile foundation steel casing construction method under a bare rock geological condition, which comprises the following steps: S1, calibrating a vertical projection range of a steel casing on the surface of a bare rock, and implanting a plurality of positioning steel bars into the bare rock around the edge of the projection range, the plurality of positioning steel bars form a positioning cage for sleeving and fixing the bottom end of the steel casing; s2, the top end of the steel casing is installed on a construction platform in a limited mode through a guide frame, the position and perpendicularity of the steel casing are detected through a total station, the position and perpendicularity of the steel casing are adjusted through the guide frame according to the deviation value of measured data and standard data, the steel casing is hoisted to enable the bottom end of the steel casing to be embedded into a positioning cage, and the steel casing is fixed; the two ends of the steel casing are limited to prevent the steel casing from deviating and displacing; s3, the rotary drilling machine enables a rotary drilling part of the rotary drilling machine to move downwards along the steel casing from the construction platform, so that the rotary drilling part conducts drilling guide hole operation on the bare rock by means of limiting and protection of the steel casing; the installation precision of the steel casing under the bare rock geological condition can be improved.
本发明属于桩基钢护筒施工方法技术领域，具体涉及一种裸岩地质条件下的桩基钢护筒施工方法，S1：在裸岩表面标定钢护筒的垂直投影范围，并环绕该投影范围的边缘将若干定位钢筋植入裸岩中，使若干定位钢筋组成套固钢护筒底端的定位笼；S2：钢护筒的顶端通过导向架限位安装于施工平台，通过全站仪对钢护筒的位置以及垂直度进行检测，并根据实测数据与标准数据的偏差值，通过导向架对钢护筒的位置和垂直度进行调节，吊装钢护筒使其底端嵌入定位笼内，使钢护筒的两端均受限制防止其偏斜位移；S3：旋挖机自施工平台上将其旋挖部沿钢护筒下行，使旋挖部依托钢护筒的限位和防护对裸岩进行挖引孔作业；其能提高在裸岩地质条件下钢护筒的安装精度。
Pile foundation steel casing construction method under bare rock geological condition
一种裸岩地质条件下的桩基钢护筒施工方法
LIU ZHIFENG (author) / SHI ZHIKAI (author) / LIU XINLAI (author) / YANG CHAO (author) / WANG HUI (author) / LIU SHUIZHOU (author) / WU WEIHAO (author) / GUO ZIXUE (author) / XU JIASHI (author)
2024-03-22
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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