Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of large-diameter mixing pile suitable for high underground water level hard soil layer
The invention relates to a construction method of a large-diameter mixing pile suitable for a high underground water level hard soil layer, which comprises the following steps: a pile casing hole site is dug at a pile site, and a pile casing is buried, so that the wall of the pile casing is vertical to the horizontal plane; a rotary drilling rig is used for drilling a formed hole to the designed elevation, pile core soil in the drilled hole is removed, and the pile core soil is backfilled into the drilled hole after being sieved; and the pile core soil in the drilled hole is stirred for four times through a stirring pile machine, and connected guniting is conducted during second-time stirring and fourth-time stirring. The rotary drilling rig is used for guiding holes, so that the subsequent stirring pile machine can drill smoothly; fine-grained soil is screened out from pile core soil excavated by the rotary drilling rig, and then the fine-grained soil is backfilled into the drill hole; the mixing pile machine is centered in place, a drill rod sinks to the bottom of a hole, guniting is conducted while stirring and rising are conducted, operation is repeated, even stirring is guaranteed, meanwhile, the stirring difficulty is effectively reduced, abrasion of a stirring rod is reduced, and the stirring efficiency is improved; and finally, the rod is lifted out of the hole to wait for solidification of the soil body, and the cement-soil mixing pile with good impermeability is formed.
本发明涉及一种适用于高地下水位坚硬土层的大直径搅拌桩施工方法，其包括桩位挖设护筒孔位，并埋设护筒，使护筒的筒壁与水平面垂直；使用旋挖钻机钻进成孔至设计标高，清除钻孔内的桩芯土，并将桩芯土过筛后回填到钻孔中；使用搅拌桩机对钻孔内的桩芯土进行四次搅拌，其中，第二次搅拌和第四搅拌时进行连接喷浆。采用旋挖钻机引孔，便于后续搅拌桩机的顺利下钻；将旋挖钻机挖出的桩芯土筛选出细粒土，再将其回填至钻孔中；搅拌桩机就位对中，钻杆下沉到孔底，边喷浆边搅拌上升，并重复作业，保证搅拌均匀的同时有效地降低了搅拌难度，减小了搅拌杆的磨损，提高了搅拌效率；最后提杆出孔，等待土体固结，形成具有良好防渗性的水泥土搅拌桩。
Construction method of large-diameter mixing pile suitable for high underground water level hard soil layer
The invention relates to a construction method of a large-diameter mixing pile suitable for a high underground water level hard soil layer, which comprises the following steps: a pile casing hole site is dug at a pile site, and a pile casing is buried, so that the wall of the pile casing is vertical to the horizontal plane; a rotary drilling rig is used for drilling a formed hole to the designed elevation, pile core soil in the drilled hole is removed, and the pile core soil is backfilled into the drilled hole after being sieved; and the pile core soil in the drilled hole is stirred for four times through a stirring pile machine, and connected guniting is conducted during second-time stirring and fourth-time stirring. The rotary drilling rig is used for guiding holes, so that the subsequent stirring pile machine can drill smoothly; fine-grained soil is screened out from pile core soil excavated by the rotary drilling rig, and then the fine-grained soil is backfilled into the drill hole; the mixing pile machine is centered in place, a drill rod sinks to the bottom of a hole, guniting is conducted while stirring and rising are conducted, operation is repeated, even stirring is guaranteed, meanwhile, the stirring difficulty is effectively reduced, abrasion of a stirring rod is reduced, and the stirring efficiency is improved; and finally, the rod is lifted out of the hole to wait for solidification of the soil body, and the cement-soil mixing pile with good impermeability is formed.
本发明涉及一种适用于高地下水位坚硬土层的大直径搅拌桩施工方法，其包括桩位挖设护筒孔位，并埋设护筒，使护筒的筒壁与水平面垂直；使用旋挖钻机钻进成孔至设计标高，清除钻孔内的桩芯土，并将桩芯土过筛后回填到钻孔中；使用搅拌桩机对钻孔内的桩芯土进行四次搅拌，其中，第二次搅拌和第四搅拌时进行连接喷浆。采用旋挖钻机引孔，便于后续搅拌桩机的顺利下钻；将旋挖钻机挖出的桩芯土筛选出细粒土，再将其回填至钻孔中；搅拌桩机就位对中，钻杆下沉到孔底，边喷浆边搅拌上升，并重复作业，保证搅拌均匀的同时有效地降低了搅拌难度，减小了搅拌杆的磨损，提高了搅拌效率；最后提杆出孔，等待土体固结，形成具有良好防渗性的水泥土搅拌桩。
Construction method of large-diameter mixing pile suitable for high underground water level hard soil layer
一种适用于高地下水位坚硬土层的大直径搅拌桩施工方法
XIAO QIANG (Autor:in) / CHEN JINPEI (Autor:in) / CHEN CHAOJUN (Autor:in) / YOU HONGLING (Autor:in) / XIAO YING (Autor:in) / HUANG LIANG (Autor:in) / XING HOUBING (Autor:in) / LIN BEICHUN (Autor:in) / WANG XIAOJIE (Autor:in) / YANG YIHUA (Autor:in)
18.02.2022
Patent
Elektronische Ressource
Chinesisch
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