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Precise positioning method for steel casing
The invention provides an accurate positioning method for a steel casing, relates to a positioning method, in particular to an accurate positioning method for the steel casing, and belongs to the technical field of large pile foundation construction. The accurate positioning method comprises the following steps that S1, a guide frame is manufactured, and hoisting and fixing are conducted; s2, the steel casing is hoisted and erected; s3, the first section of steel casing is moved into a gathering opening of the guide frame; s4, checking the plane position and the perpendicularity of the pile casing, if the plane position and the perpendicularity are qualified, executing S5, and if the plane position and the perpendicularity are not qualified, correcting; welding of the double-spliced guide frame and the ground pre-embedded steel plate is used as a limiting measure, the reliability and stability of the limiting measure are improved, the fixed guide frame is used for accurately positioning the steel casing, deviation in the lowering process is avoided, the steel casing can be lowered more smoothly, damage to an outer coating of the casing is reduced, and the service life of the steel casing is prolonged. And the two methods of total station measurement lofting and RTK measurement lofting are adopted to cooperate with measurement and positioning in the lower process, so that the limiting and positioning precision is improved.
本发明提供了一种钢护筒的精准定位方法，涉及一种定位方法，具体为钢护筒的精准定位方法，属于大型桩基施工技术领域，包括以下步骤：S1、制作导向架，并进行吊装固定；S2、钢护筒起吊、竖直；S3、将第一节钢护筒移入导向架拢口；S4、校核护筒平面位置和垂直度，合格则执行S5，不合格则进行效正；本发明通过运用双拼导向架与地面预埋钢板焊接作为限位措施，增加了限位措施的可靠性和稳定性，并利用固定后的导向架对钢护筒进行准确定位，避免了下放过程中出现偏移，且可以使钢护筒下放更顺滑，降低了对护筒外涂层的破坏，并在下方过程中采用全站仪测量方放样和RTK测量放样两种方法配合测量定位，提高了限位和定位精度。
Precise positioning method for steel casing
The invention provides an accurate positioning method for a steel casing, relates to a positioning method, in particular to an accurate positioning method for the steel casing, and belongs to the technical field of large pile foundation construction. The accurate positioning method comprises the following steps that S1, a guide frame is manufactured, and hoisting and fixing are conducted; s2, the steel casing is hoisted and erected; s3, the first section of steel casing is moved into a gathering opening of the guide frame; s4, checking the plane position and the perpendicularity of the pile casing, if the plane position and the perpendicularity are qualified, executing S5, and if the plane position and the perpendicularity are not qualified, correcting; welding of the double-spliced guide frame and the ground pre-embedded steel plate is used as a limiting measure, the reliability and stability of the limiting measure are improved, the fixed guide frame is used for accurately positioning the steel casing, deviation in the lowering process is avoided, the steel casing can be lowered more smoothly, damage to an outer coating of the casing is reduced, and the service life of the steel casing is prolonged. And the two methods of total station measurement lofting and RTK measurement lofting are adopted to cooperate with measurement and positioning in the lower process, so that the limiting and positioning precision is improved.
本发明提供了一种钢护筒的精准定位方法，涉及一种定位方法，具体为钢护筒的精准定位方法，属于大型桩基施工技术领域，包括以下步骤：S1、制作导向架，并进行吊装固定；S2、钢护筒起吊、竖直；S3、将第一节钢护筒移入导向架拢口；S4、校核护筒平面位置和垂直度，合格则执行S5，不合格则进行效正；本发明通过运用双拼导向架与地面预埋钢板焊接作为限位措施，增加了限位措施的可靠性和稳定性，并利用固定后的导向架对钢护筒进行准确定位，避免了下放过程中出现偏移，且可以使钢护筒下放更顺滑，降低了对护筒外涂层的破坏，并在下方过程中采用全站仪测量方放样和RTK测量放样两种方法配合测量定位，提高了限位和定位精度。
Precise positioning method for steel casing
一种钢护筒的精准定位方法
KUANG YICHENG (author) / ZHANG KAI (author) / ZHU YUFEI (author) / LI YECHI (author) / WEN JIEPING (author) / WU QI (author) / DUAN SHUHONG (author) / CHENG YANPING (author)
2024-04-05
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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