A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
The invention provides a cast-in-place pile immersed tube and a cast-in-place pile construction method, and belongs to the technical field of civil engineering. The cast-in-place pile immersed tube comprises a pile tip, an inner tube and an outer tube, the lower end of the inner tube and the lower end of the outer tube are both connected with the pile tip, a plurality of material through holes are formed in the inner tube, and the outer tube is a hose which has air tightness and deforms under the condition that the air tightness is maintained. The cast-in-place pile construction method comprises the following steps that the immersed tube is put down in an existing pile hole or directly driven into a designated position; high-pressure gas is filled into the inner tube, the outer tube expands outwards and deforms to extrude a soil body at the outer side of the outer tube, and irregular pits are extruded in the soil body outside the outer tube; a steel reinforcement framework is lowered into the inner tube; and concrete is injected into the inner tube, the steel reinforcement framework is vibrated so that the concrete can be filled into the position between the outer tube and the inner tube and tamped, and after the concrete is solidified, a diameter-expanding cast-in-place pile with the outer side of the inner tube provided with protrusions corresponding to the irregular pits is formed. The cast-in-place pile immersed tube and the cast-in-place pile construction method have the advantages of high anti-settling capacity of a pile body and the like.
本发明提供了一种灌注桩沉管及灌桩施工方法，属于土木工程技术领域。灌注桩沉管包括桩尖、内管和外管，内管和外管的下端均连接桩尖，内管上开设有若干通料孔，外管为具有气密性的、在维持气密性的情况下发生形变的软管；灌桩施工方法包括如下步骤：在既有的桩孔内下放上述沉管或直接在指定位置打入上述沉管；向内管内充入高压气体，外管外扩形变而挤压外管外侧土体，在外管之外的土体上压出不规则凹坑；下放钢筋骨架至内管内；向内管内注入混凝土，振动钢筋骨架使混凝土充入外管与内管之间并捣实，待混凝土固化后形成在内管外侧具有与不规则凹坑对应的凸起的扩径灌注桩。本发明具有桩体抗沉降能力强等优点。
The invention provides a cast-in-place pile immersed tube and a cast-in-place pile construction method, and belongs to the technical field of civil engineering. The cast-in-place pile immersed tube comprises a pile tip, an inner tube and an outer tube, the lower end of the inner tube and the lower end of the outer tube are both connected with the pile tip, a plurality of material through holes are formed in the inner tube, and the outer tube is a hose which has air tightness and deforms under the condition that the air tightness is maintained. The cast-in-place pile construction method comprises the following steps that the immersed tube is put down in an existing pile hole or directly driven into a designated position; high-pressure gas is filled into the inner tube, the outer tube expands outwards and deforms to extrude a soil body at the outer side of the outer tube, and irregular pits are extruded in the soil body outside the outer tube; a steel reinforcement framework is lowered into the inner tube; and concrete is injected into the inner tube, the steel reinforcement framework is vibrated so that the concrete can be filled into the position between the outer tube and the inner tube and tamped, and after the concrete is solidified, a diameter-expanding cast-in-place pile with the outer side of the inner tube provided with protrusions corresponding to the irregular pits is formed. The cast-in-place pile immersed tube and the cast-in-place pile construction method have the advantages of high anti-settling capacity of a pile body and the like.
本发明提供了一种灌注桩沉管及灌桩施工方法，属于土木工程技术领域。灌注桩沉管包括桩尖、内管和外管，内管和外管的下端均连接桩尖，内管上开设有若干通料孔，外管为具有气密性的、在维持气密性的情况下发生形变的软管；灌桩施工方法包括如下步骤：在既有的桩孔内下放上述沉管或直接在指定位置打入上述沉管；向内管内充入高压气体，外管外扩形变而挤压外管外侧土体，在外管之外的土体上压出不规则凹坑；下放钢筋骨架至内管内；向内管内注入混凝土，振动钢筋骨架使混凝土充入外管与内管之间并捣实，待混凝土固化后形成在内管外侧具有与不规则凹坑对应的凸起的扩径灌注桩。本发明具有桩体抗沉降能力强等优点。
Cast-in-place pile immersed tube and cast-in-place pile construction method
一种灌注桩沉管及灌桩施工方法
WU LIBIN (author)
2021-09-10
Patent
Electronic Resource
Chinese
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