Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Method for constructing immersed tube rammed and expanded cast-in-place pile in sand layer or gravel layer
The invention discloses a method for constructing an immersed tube rammed and expanded cast-in-place pile in a sand layer or a gravel layer, and relates to the field of building construction. The method includes the following steps that 1, a long spiral drilling machine is used for forming a guiding hole in a pile position, the depth of the guiding hole is smaller than a designed pile length, andthe diameter of the guiding hole is larger than that of a pile pipe; 2, slurry or chemical pulp is injected into the bottom of the hole from the interior of a long spiral drill center steel pipe, grouting is conducted while a drill rod is lifted, and it is guaranteed that hole collapse does not occur in the sand layer or the gravel layer; 3, immersed tube rammed and expanded equipment is used forhammering and sinking the steel pile pipe conforming to the design into the guiding hole, so that part of the slurry or the chemical pulp is extruded out of the ground from the outside of the pile pipe; 4, reinforcement cages are placed in the pile pipe, and concrete is poured into the pile pipe, wherein the concrete pouring height is the height of the concrete after the pile pipe is pulled out and conforms to the designed pile top elevation; and 5, the pile pipe is pulled out, the upper end of the pile is vibrated through a vibrating rod, and construction of the pile is completed. The hole forming depth of an immersed tube can be guaranteed, and hole collapse is avoided.
本发明公开一种在砂层或碎石层中施工沉管夯扩灌注桩的方法，涉及建筑施工领域，包括如下步骤：步骤一；在桩位处先用长螺旋钻机引孔，引孔深度小于设计桩长，引孔直径大于桩管直径；步骤二；从长螺旋钻中心钢管内向孔底注入泥浆或化学浆，边提钻杆边注浆，保证砂层或碎石层不塌孔；步骤三；用沉管夯扩桩设备将与设计相符的钢桩管锤击沉入已引的孔中，使泥浆或化学浆部分从桩管外挤出地面；步骤四；将钢筋笼安放在桩管内，并向桩管内灌注混凝土，混凝土灌注高度为拔出桩管后混凝土的高度与设计桩顶标高相符；步骤五；拔出桩管，并对桩上端采用振动棒振捣，该桩施工完毕。本发明可保证沉管成孔的深度，同时避免塌孔。
Method for constructing immersed tube rammed and expanded cast-in-place pile in sand layer or gravel layer
The invention discloses a method for constructing an immersed tube rammed and expanded cast-in-place pile in a sand layer or a gravel layer, and relates to the field of building construction. The method includes the following steps that 1, a long spiral drilling machine is used for forming a guiding hole in a pile position, the depth of the guiding hole is smaller than a designed pile length, andthe diameter of the guiding hole is larger than that of a pile pipe; 2, slurry or chemical pulp is injected into the bottom of the hole from the interior of a long spiral drill center steel pipe, grouting is conducted while a drill rod is lifted, and it is guaranteed that hole collapse does not occur in the sand layer or the gravel layer; 3, immersed tube rammed and expanded equipment is used forhammering and sinking the steel pile pipe conforming to the design into the guiding hole, so that part of the slurry or the chemical pulp is extruded out of the ground from the outside of the pile pipe; 4, reinforcement cages are placed in the pile pipe, and concrete is poured into the pile pipe, wherein the concrete pouring height is the height of the concrete after the pile pipe is pulled out and conforms to the designed pile top elevation; and 5, the pile pipe is pulled out, the upper end of the pile is vibrated through a vibrating rod, and construction of the pile is completed. The hole forming depth of an immersed tube can be guaranteed, and hole collapse is avoided.
本发明公开一种在砂层或碎石层中施工沉管夯扩灌注桩的方法，涉及建筑施工领域，包括如下步骤：步骤一；在桩位处先用长螺旋钻机引孔，引孔深度小于设计桩长，引孔直径大于桩管直径；步骤二；从长螺旋钻中心钢管内向孔底注入泥浆或化学浆，边提钻杆边注浆，保证砂层或碎石层不塌孔；步骤三；用沉管夯扩桩设备将与设计相符的钢桩管锤击沉入已引的孔中，使泥浆或化学浆部分从桩管外挤出地面；步骤四；将钢筋笼安放在桩管内，并向桩管内灌注混凝土，混凝土灌注高度为拔出桩管后混凝土的高度与设计桩顶标高相符；步骤五；拔出桩管，并对桩上端采用振动棒振捣，该桩施工完毕。本发明可保证沉管成孔的深度，同时避免塌孔。
Method for constructing immersed tube rammed and expanded cast-in-place pile in sand layer or gravel layer
一种在砂层或碎石层中施工沉管夯扩灌注桩的方法
LIU QINGJIE (Autor:in)
30.10.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
| Europäisches Patentamt | 2022
Construction method of expanded-base cast-in-place pile in gravel-cobble soil layer
| Europäisches Patentamt | 2021
Hole forming device and method for construction of immersed tube rammed and expanded precast pile
| Europäisches Patentamt | 2024
Vibration pile machine for immersed tube sand-gravel pile and pile forming method
| Europäisches Patentamt | 2020
| Europäisches Patentamt | 2020