A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Pile foundation pore-forming construction method
The invention discloses a hole-forming construction method for a pile foundation. The hole-forming construction method comprises the following steps that S1, pile position measurement and lofting are conducted; s2, a steel casing is manufactured and buried; a steel casing is manufactured, wherein the inner diameter of the casing is 20-30 cm larger than the designed pile diameter; the steel casing burying comprises the steps that (1) the vertical line of the center of the casing coincides with the center line of the pile; (2) the top of the steel casing is 0.3 m higher than the ground or 1.0-2.0 m higher than the water surface, and when confined water exists in the drill hole, the top of the steel casing is 2.0 m higher than the stabilized confined water level; (3) the burying depth of the steel pile casing in a dry land or a paddy field is preferably 2-4 m, and in a riverbed with scouring influence, the steel pile casing is preferably sunk below a local scouring line for 1.0-1.5 m in the construction period; s3, pile foundation drilling construction is conducted; S31, a drilling machine is in place, specifically, construction is conducted through a rotary excavating drill, and the diameter of a drill bit is slightly smaller than the diameter of a pile by 1-2 cm; and S32, slurry preparation. The stability of the soil layer hole wall during drilling is guaranteed, it is guaranteed that the reinforcement cage does not deform in the hoisting process, and waste residues at the hole bottom can be effectively removed.
本发明公开了一种桩基的成孔施工方法，包括以下步骤：S1、桩位测量放样；S2、钢护筒制作及埋设；钢护筒制作：护筒内径大于设计桩径20‑30cm；钢护筒埋设：1)护筒中心竖直线与桩中心线重合；2)钢护筒顶宜高出地面0.3m或水面1.0～2.0m，当钻孔内有承压水时，应高于稳定后的承压水位2.0m以上；3)钢护筒埋置深度在旱地或水田宜为2～4m，在有冲刷影响的河床，护筒宜沉入施工期局部冲刷线以下1.0～1.5m；S3、桩基钻孔施工S31、钻机就位：采用旋挖钻施工，钻头直径略比桩直径小1‑2cm；S32、泥浆制备。本发明保证钻孔时土层孔壁的稳定性，保证钢筋笼吊装过程中不变形，能够有效清除孔底废渣。
Pile foundation pore-forming construction method
The invention discloses a hole-forming construction method for a pile foundation. The hole-forming construction method comprises the following steps that S1, pile position measurement and lofting are conducted; s2, a steel casing is manufactured and buried; a steel casing is manufactured, wherein the inner diameter of the casing is 20-30 cm larger than the designed pile diameter; the steel casing burying comprises the steps that (1) the vertical line of the center of the casing coincides with the center line of the pile; (2) the top of the steel casing is 0.3 m higher than the ground or 1.0-2.0 m higher than the water surface, and when confined water exists in the drill hole, the top of the steel casing is 2.0 m higher than the stabilized confined water level; (3) the burying depth of the steel pile casing in a dry land or a paddy field is preferably 2-4 m, and in a riverbed with scouring influence, the steel pile casing is preferably sunk below a local scouring line for 1.0-1.5 m in the construction period; s3, pile foundation drilling construction is conducted; S31, a drilling machine is in place, specifically, construction is conducted through a rotary excavating drill, and the diameter of a drill bit is slightly smaller than the diameter of a pile by 1-2 cm; and S32, slurry preparation. The stability of the soil layer hole wall during drilling is guaranteed, it is guaranteed that the reinforcement cage does not deform in the hoisting process, and waste residues at the hole bottom can be effectively removed.
本发明公开了一种桩基的成孔施工方法，包括以下步骤：S1、桩位测量放样；S2、钢护筒制作及埋设；钢护筒制作：护筒内径大于设计桩径20‑30cm；钢护筒埋设：1)护筒中心竖直线与桩中心线重合；2)钢护筒顶宜高出地面0.3m或水面1.0～2.0m，当钻孔内有承压水时，应高于稳定后的承压水位2.0m以上；3)钢护筒埋置深度在旱地或水田宜为2～4m，在有冲刷影响的河床，护筒宜沉入施工期局部冲刷线以下1.0～1.5m；S3、桩基钻孔施工S31、钻机就位：采用旋挖钻施工，钻头直径略比桩直径小1‑2cm；S32、泥浆制备。本发明保证钻孔时土层孔壁的稳定性，保证钢筋笼吊装过程中不变形，能够有效清除孔底废渣。
Pile foundation pore-forming construction method
一种桩基的成孔施工方法
SHAO CHANGFEI (author) / LIU LIANG (author) / YU XIUBIN (author) / QI YANHUI (author) / LI BO (author) / LIU XIAOLIANG (author) / YANG JUN (author)
2024-11-01
Patent
Electronic Resource
Chinese
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