Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Hole collapse prevention construction device and cast-in-place pile construction technology
The invention relates to the technical field of highway construction, in particular to a hole collapse prevention construction device and a cast-in-place pile construction technology.The hole collapse prevention construction device comprises a drill rod and a rotary excavating drill bit, the rotary excavating drill bit is fixedly connected with the suspended end of the drill rod, and the hole collapse prevention construction device further comprises a sleeve, at least two sets of connecting rods, a lifting assembly and a supporting assembly; one end of the connecting rod is connected with the inner wall of the sleeve, the other end of the connecting rod is rotatably connected with the drill rod, the supporting assembly comprises a lantern ring, a plurality of pull rods, a plurality of supporting rods and diameter expanding pieces, one end of each supporting rod is rotatably connected with the sleeve, one end of each pull rod is rotatably connected with the supporting rod, and the other end of each pull rod is rotatably connected with the lantern ring; the horizontal projection diameter of the rotary drilling bit is smaller than the inner diameter of the pile casing. The pile hole wall is supported by the pile casing through synchronous movement of the rotary excavating drill bit and the pile casing, so that the pile hole wall is in a protection state, meanwhile, the rotary excavating efficiency of the pile hole is improved through the synchronous action of the lifting assembly and the rotary excavating drill bit, and then the construction efficiency of a cast-in-place pile is improved.
本申请涉及公路施工技术领域,尤其涉及一种预防塌孔施工装置及灌注桩施工工艺，包括钻杆以及旋挖钻头，旋挖钻头与钻杆的悬空端固定连接，还包括套筒、至少两组连接杆、提升组件以及支撑组件，套筒与钻杆同心设置，连接杆一端与套筒内壁连接，另一端与钻杆转动连接，支撑组件包括套环、多根拉杆、多根支撑杆以及扩径件，支撑杆一端与套筒转动连接，拉杆一端与支撑杆转动连接，另一端与套环转动连接，套环与套筒滑移连接，旋挖钻头的水平投影直径小于护筒内径。通过旋挖钻头与护筒的同步运动，实现护筒对桩孔孔壁的支护，使得桩孔孔壁处于防护状态，同时，通过提升组件与旋挖钻头的同步作用，提高了桩孔旋挖的效率，进而提高灌注桩的施工效率。
Hole collapse prevention construction device and cast-in-place pile construction technology
The invention relates to the technical field of highway construction, in particular to a hole collapse prevention construction device and a cast-in-place pile construction technology.The hole collapse prevention construction device comprises a drill rod and a rotary excavating drill bit, the rotary excavating drill bit is fixedly connected with the suspended end of the drill rod, and the hole collapse prevention construction device further comprises a sleeve, at least two sets of connecting rods, a lifting assembly and a supporting assembly; one end of the connecting rod is connected with the inner wall of the sleeve, the other end of the connecting rod is rotatably connected with the drill rod, the supporting assembly comprises a lantern ring, a plurality of pull rods, a plurality of supporting rods and diameter expanding pieces, one end of each supporting rod is rotatably connected with the sleeve, one end of each pull rod is rotatably connected with the supporting rod, and the other end of each pull rod is rotatably connected with the lantern ring; the horizontal projection diameter of the rotary drilling bit is smaller than the inner diameter of the pile casing. The pile hole wall is supported by the pile casing through synchronous movement of the rotary excavating drill bit and the pile casing, so that the pile hole wall is in a protection state, meanwhile, the rotary excavating efficiency of the pile hole is improved through the synchronous action of the lifting assembly and the rotary excavating drill bit, and then the construction efficiency of a cast-in-place pile is improved.
本申请涉及公路施工技术领域,尤其涉及一种预防塌孔施工装置及灌注桩施工工艺，包括钻杆以及旋挖钻头，旋挖钻头与钻杆的悬空端固定连接，还包括套筒、至少两组连接杆、提升组件以及支撑组件，套筒与钻杆同心设置，连接杆一端与套筒内壁连接，另一端与钻杆转动连接，支撑组件包括套环、多根拉杆、多根支撑杆以及扩径件，支撑杆一端与套筒转动连接，拉杆一端与支撑杆转动连接，另一端与套环转动连接，套环与套筒滑移连接，旋挖钻头的水平投影直径小于护筒内径。通过旋挖钻头与护筒的同步运动，实现护筒对桩孔孔壁的支护，使得桩孔孔壁处于防护状态，同时，通过提升组件与旋挖钻头的同步作用，提高了桩孔旋挖的效率，进而提高灌注桩的施工效率。
Hole collapse prevention construction device and cast-in-place pile construction technology
一种预防塌孔施工装置及灌注桩施工工艺
MA SHENGWEI (Autor:in) / LIU BIN (Autor:in) / ZHANG XIAOBO (Autor:in) / LI DONG (Autor:in) / LIU YU (Autor:in) / LUO BINXIANG (Autor:in) / ZHENG MAOSEN (Autor:in) / ZHANG XIAODONG (Autor:in)
19.04.2022
Patent
Elektronische Ressource
Chinesisch
Novel cast-in-place pile hole collapse prevention construction technology
| Europäisches Patentamt | 2024
| Europäisches Patentamt | 2024