Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Constructing process of cast-in-situ bored piles
The invention relates to a constructing process of cast-in-situ bored piles, and belongs to the technical field of building construction. According to the technical scheme, the constructing process ischaracterized by including the following steps of S1, making a preparation for construction, wherein a construction site is leveled and firmly compacted, and a road bed plate is laid at an operationposition of a drilling machine; S2, burying pile casings, wherein the soil within the burying depth range of the pile casings at pore positions are dug out through a rotary excavating drill bit, the pile casings are directly pressed into soil after being hung in place, the outer wall of each pile casing is axially and fixedly provided with a plurality of reinforcing pieces, the reinforcing piecesare evenly distributed in the circumferential direction of the pile casings, loam is firmly compacted outside the pile casings, and the height of water heads in the pile casings is 1.0-1.5 m; S3, putting the drilling machine in position, wherein the drilling machine is fixed to the road bed plate; S4, performing drilling, wherein a drill stem slowly and continuously operates during bore forming construction, and static slurry is adopted for protecting the walls in the drilling process; S5, putting down a reinforcement cage, wherein the bores are cleaned first, and then the reinforcement cage is slowly put down section by section at a constant speed; and S6, pouring cement, wherein the cement is poured continuously through a guide pipe method, and the effect of improving the burying stability of the pile casings is realized.
本发明涉及一种钻孔灌注桩施工工艺，属于建筑施工的技术领域，其技术方案要点是包括以下步骤：S1施工准备：对施工场地进行平整，并夯填密实，在钻机作业处铺设路基板；S2护筒埋设：采用旋挖钻头将孔位处护筒埋设深度范围的土挖除，再将护筒吊装到位后直接压入土中，护筒外壁沿轴向固定设置有若干个加强片，加强片沿护筒周向均匀分布，然后在护筒外侧用黏土夯填密实，护筒内水头高度为1.0m‑1.5m；S3钻机就位：将钻机固定在路基板上；S4钻孔：开孔施工时钻杆缓慢连续进行，钻进过程中采用静态泥浆护壁；S5钢筋笼下放：先进行清孔，然后将钢筋笼缓慢匀速逐节下放；S6灌注混凝土：采用导管法连续灌注混凝土，达到提高护筒埋设稳定性的效果。
Constructing process of cast-in-situ bored piles
The invention relates to a constructing process of cast-in-situ bored piles, and belongs to the technical field of building construction. According to the technical scheme, the constructing process ischaracterized by including the following steps of S1, making a preparation for construction, wherein a construction site is leveled and firmly compacted, and a road bed plate is laid at an operationposition of a drilling machine; S2, burying pile casings, wherein the soil within the burying depth range of the pile casings at pore positions are dug out through a rotary excavating drill bit, the pile casings are directly pressed into soil after being hung in place, the outer wall of each pile casing is axially and fixedly provided with a plurality of reinforcing pieces, the reinforcing piecesare evenly distributed in the circumferential direction of the pile casings, loam is firmly compacted outside the pile casings, and the height of water heads in the pile casings is 1.0-1.5 m; S3, putting the drilling machine in position, wherein the drilling machine is fixed to the road bed plate; S4, performing drilling, wherein a drill stem slowly and continuously operates during bore forming construction, and static slurry is adopted for protecting the walls in the drilling process; S5, putting down a reinforcement cage, wherein the bores are cleaned first, and then the reinforcement cage is slowly put down section by section at a constant speed; and S6, pouring cement, wherein the cement is poured continuously through a guide pipe method, and the effect of improving the burying stability of the pile casings is realized.
本发明涉及一种钻孔灌注桩施工工艺，属于建筑施工的技术领域，其技术方案要点是包括以下步骤：S1施工准备：对施工场地进行平整，并夯填密实，在钻机作业处铺设路基板；S2护筒埋设：采用旋挖钻头将孔位处护筒埋设深度范围的土挖除，再将护筒吊装到位后直接压入土中，护筒外壁沿轴向固定设置有若干个加强片，加强片沿护筒周向均匀分布，然后在护筒外侧用黏土夯填密实，护筒内水头高度为1.0m‑1.5m；S3钻机就位：将钻机固定在路基板上；S4钻孔：开孔施工时钻杆缓慢连续进行，钻进过程中采用静态泥浆护壁；S5钢筋笼下放：先进行清孔，然后将钢筋笼缓慢匀速逐节下放；S6灌注混凝土：采用导管法连续灌注混凝土，达到提高护筒埋设稳定性的效果。
Constructing process of cast-in-situ bored piles
一种钻孔灌注桩施工工艺
JIANG ZHENG (Autor:in) / WU QUANMU (Autor:in) / WU CUNXI (Autor:in) / KANG SUFANG (Autor:in)
29.05.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Field tests on cast-in-situ bored piles
| Online Contents | 1970
Area of effective use of bored situ-cast piles
| Online Contents | 1972
On using large diameter cast-in-situ bored piles
| Online Contents | 1970
Fresh concrete pressure in cast in-situ bored piles
| HENRY – Bundesanstalt für Wasserbau (BAW) | 2021
Increase of the bearing capacity of bored situ-cast piles
| Online Contents | 1983