Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method of bored concrete pile
The invention relates to a construction method of a bored concrete pile. The construction method comprises the steps of leveling a site; performing drilling; performing chambering; enabling a reinforcement cage to be hoisted in a pre-pile hole; performing concrete pouring; and breaking a pile head. The hole diameter of the pre-pile hole is smaller than that of a pile hole in a design drawing, thehole wall of the pre-pile hole is extruded to expand the hole while an air bag is used for recovering a cylinder, so that the hole wall of the final pile hole is compact in soil layer and stable in structure, air can be directly exhausted into the atmosphere, convenience and conciseness in implementation are realized, and the working efficiency is further improved. During pouring, the hole wall isof a compact structure, so that the range of concrete permeating into the soil layer from the hole wall is greatly reduced, and the range of the soil layer polluted by the concrete is further reduced. According to the construction method, the surface of a base layer is subjected to mortar cleaning and holes and residual gaps are filled and leveled up, so that the problem of deviation in the subsequent drilling process of a drill rod can be avoided, and prolonging of construction time, caused by repeated adjustment of the drill rod, is avoided.
本发明是一种钻孔混凝土灌注桩的施工方法，包括场地整平；钻孔；扩孔；沉入钢筋笼；浇筑混凝土；破除桩头。本发明通过预桩孔的孔径少于设计图纸中桩孔的孔径，利用气袋恢复圆柱状的同时挤压预桩孔的孔壁以扩孔，使得终桩孔的孔壁土层密实，结构稳定，由于气体可以直接排放到空气中，方便简洁，便于实现，进而提高了工作效率；灌注时，孔壁为密实结构导致导致混凝土从孔壁渗透至土层内的范围大幅度减少，进而减少混凝土污染土层的范围；本发明通过对基层表面进行砂浆清理以及洞眼和残缺口处的填平操作可以避免后续钻杆钻孔过程中出现偏移的问题，从而避免了重复调整钻杆而导致的施工时间加长。
Construction method of bored concrete pile
The invention relates to a construction method of a bored concrete pile. The construction method comprises the steps of leveling a site; performing drilling; performing chambering; enabling a reinforcement cage to be hoisted in a pre-pile hole; performing concrete pouring; and breaking a pile head. The hole diameter of the pre-pile hole is smaller than that of a pile hole in a design drawing, thehole wall of the pre-pile hole is extruded to expand the hole while an air bag is used for recovering a cylinder, so that the hole wall of the final pile hole is compact in soil layer and stable in structure, air can be directly exhausted into the atmosphere, convenience and conciseness in implementation are realized, and the working efficiency is further improved. During pouring, the hole wall isof a compact structure, so that the range of concrete permeating into the soil layer from the hole wall is greatly reduced, and the range of the soil layer polluted by the concrete is further reduced. According to the construction method, the surface of a base layer is subjected to mortar cleaning and holes and residual gaps are filled and leveled up, so that the problem of deviation in the subsequent drilling process of a drill rod can be avoided, and prolonging of construction time, caused by repeated adjustment of the drill rod, is avoided.
本发明是一种钻孔混凝土灌注桩的施工方法，包括场地整平；钻孔；扩孔；沉入钢筋笼；浇筑混凝土；破除桩头。本发明通过预桩孔的孔径少于设计图纸中桩孔的孔径，利用气袋恢复圆柱状的同时挤压预桩孔的孔壁以扩孔，使得终桩孔的孔壁土层密实，结构稳定，由于气体可以直接排放到空气中，方便简洁，便于实现，进而提高了工作效率；灌注时，孔壁为密实结构导致导致混凝土从孔壁渗透至土层内的范围大幅度减少，进而减少混凝土污染土层的范围；本发明通过对基层表面进行砂浆清理以及洞眼和残缺口处的填平操作可以避免后续钻杆钻孔过程中出现偏移的问题，从而避免了重复调整钻杆而导致的施工时间加长。
Construction method of bored concrete pile
一种钻孔混凝土灌注桩的施工方法
CHEN XUEGUANG (Autor:in) / CUI JUN (Autor:in) / HU JUN (Autor:in) / GAO BINGSHAN (Autor:in)
03.11.2020
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
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