A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction technology of cast-in-situ bored pile
The invention discloses a construction process of a cast-in-situ bored pile, which comprises the following steps: S1, construction preparation: detecting a soil layer at a pile position to determine whether an obstacle exists or not, and removing the obstacle in advance if the obstacle exists; s2, inserting and driving a steel casing: carrying out advanced drilling geological exploration and correcting the steel casing; s3, steel platform construction; s4, a drilling machine is in place; a drill bit of the percussion drill is in a hollow cross shape, and the diameter of the drill bit is 20-60 mm smaller than the aperture of the drill bit; when hole positions need to be corrected, four point positions are marked on the top of the steel casing, and the center point of each pile foundation is released with lines through a cross method; s6, hole cleaning; s7, placing a reinforcement cage; s8, guide pipe lowering, wherein shrinkage compensation concrete pouring is adopted for a pile body; s9, secondary hole cleaning is carried out, wherein S10 is carried out after secondary hole cleaning is qualified; if secondary hole cleaning is not qualified, returning to S5; s10, underwater alkali filling is carried out; and S11, the guide pipe is pulled out and moved to the next hole site. According to the method, all procedures are comprehensively controlled and treated, and the cast-in-situ bored pile is systematically constructed.
本发明公开了一种钻孔灌注桩的施工工艺，包括以下步骤：S1：施工准备：对桩位处的土层进行探摸，以确定是否有障碍物，如有障碍物应事先排除；S2：钢护筒插打：需要进行进行超前钻地质勘探，以及钢护筒的校正；S3：钢平台施工；S4：钻机就位；S5：冲击成孔：冲击钻钻头选用中空十字型，直径较孔径小20‑60mm；需要校正孔位，在钢护筒顶部标出四个点位，采用十字交叉法带线放出各桩基础的中心点；S6：清孔；S7：下钢筋笼；S8：下导管：桩身采用收缩补偿砼浇注；S9：二次清孔：二次清孔合格以后进行S10；二次清孔不合格返回S5；S10：水下硷灌注；S11：拔导管、移至下一孔位。本发明，对各个工序进行全方面的控制处理，系统性的对钻孔灌注桩进行施工。
Construction technology of cast-in-situ bored pile
The invention discloses a construction process of a cast-in-situ bored pile, which comprises the following steps: S1, construction preparation: detecting a soil layer at a pile position to determine whether an obstacle exists or not, and removing the obstacle in advance if the obstacle exists; s2, inserting and driving a steel casing: carrying out advanced drilling geological exploration and correcting the steel casing; s3, steel platform construction; s4, a drilling machine is in place; a drill bit of the percussion drill is in a hollow cross shape, and the diameter of the drill bit is 20-60 mm smaller than the aperture of the drill bit; when hole positions need to be corrected, four point positions are marked on the top of the steel casing, and the center point of each pile foundation is released with lines through a cross method; s6, hole cleaning; s7, placing a reinforcement cage; s8, guide pipe lowering, wherein shrinkage compensation concrete pouring is adopted for a pile body; s9, secondary hole cleaning is carried out, wherein S10 is carried out after secondary hole cleaning is qualified; if secondary hole cleaning is not qualified, returning to S5; s10, underwater alkali filling is carried out; and S11, the guide pipe is pulled out and moved to the next hole site. According to the method, all procedures are comprehensively controlled and treated, and the cast-in-situ bored pile is systematically constructed.
本发明公开了一种钻孔灌注桩的施工工艺，包括以下步骤：S1：施工准备：对桩位处的土层进行探摸，以确定是否有障碍物，如有障碍物应事先排除；S2：钢护筒插打：需要进行进行超前钻地质勘探，以及钢护筒的校正；S3：钢平台施工；S4：钻机就位；S5：冲击成孔：冲击钻钻头选用中空十字型，直径较孔径小20‑60mm；需要校正孔位，在钢护筒顶部标出四个点位，采用十字交叉法带线放出各桩基础的中心点；S6：清孔；S7：下钢筋笼；S8：下导管：桩身采用收缩补偿砼浇注；S9：二次清孔：二次清孔合格以后进行S10；二次清孔不合格返回S5；S10：水下硷灌注；S11：拔导管、移至下一孔位。本发明，对各个工序进行全方面的控制处理，系统性的对钻孔灌注桩进行施工。
Construction technology of cast-in-situ bored pile
一种钻孔灌注桩的施工工艺
TANG XUDONG (author) / ZHANG XUFENG (author) / XIE JIE (author) / ZHOU YICHEN (author) / WANG ZHENYU (author)
2023-11-17
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen