A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Construction method for unbonded prestressed cast-in-situ bored uplift pile
The invention discloses an unbonded prestressed cast-in-situ bored uplift pile construction method, and relates to the technical field of building pile foundation construction. Drilling holes; a reinforcement cage is manufactured and comprises a reinforcement cage body, a plurality of prestress steel strand assemblies and a lower end flange plate, each prestress steel strand assembly comprises an outer sleeve, a plurality of steel strands and a tensioning assembly, and the multiple outer sleeves are fixed into the reinforcement cage body, arranged in the circumferential direction of the reinforcement cage at equal intervals and connected with the reinforcement cage body in a binding mode; a plurality of steel strands are installed in each outer sleeve, and the reinforcement cage is hoisted into the pile hole; mounting a conduit; concrete is poured into the pile body to form pile body concrete; pulling out the guide pipe and the steel casing; after the pile body is solidified, concrete is poured on the pile side; and the pile top flange is mounted, and the steel strand is anchored with the pile top flange after being tensioned to a design value, so that the steel content of the uplift pile can be reduced, and the economical efficiency is improved.
本发明公开了一种无黏结预应力钻孔灌注抗拔桩施工方法，涉及建筑桩基基础施工技术领域，步骤如下：埋设钢护筒；钻孔；制作钢筋笼，钢筋笼包括钢筋笼本体、多个预应力钢绞组件和下端法兰盘，各个预应力钢绞组件均包括外套管、多根钢绞丝和张拉组件，多个外套管固定在钢筋笼本体内部，且沿钢筋笼的周向等距布置，与钢筋笼本体进行绑扎连接，在各个外套管内均安装若干根钢绞线，并将钢筋笼吊装至桩孔内；安装导管；向桩身内浇注混凝土，形成桩身混凝土；拔出导管和钢护筒；待桩身凝固后，进行桩侧浇注混凝土；安装桩顶法兰，对钢绞线进行张拉至设计值后，与桩顶法兰进行锚固，能够减少抗拔桩含钢量，提高经济性。
Construction method for unbonded prestressed cast-in-situ bored uplift pile
The invention discloses an unbonded prestressed cast-in-situ bored uplift pile construction method, and relates to the technical field of building pile foundation construction. Drilling holes; a reinforcement cage is manufactured and comprises a reinforcement cage body, a plurality of prestress steel strand assemblies and a lower end flange plate, each prestress steel strand assembly comprises an outer sleeve, a plurality of steel strands and a tensioning assembly, and the multiple outer sleeves are fixed into the reinforcement cage body, arranged in the circumferential direction of the reinforcement cage at equal intervals and connected with the reinforcement cage body in a binding mode; a plurality of steel strands are installed in each outer sleeve, and the reinforcement cage is hoisted into the pile hole; mounting a conduit; concrete is poured into the pile body to form pile body concrete; pulling out the guide pipe and the steel casing; after the pile body is solidified, concrete is poured on the pile side; and the pile top flange is mounted, and the steel strand is anchored with the pile top flange after being tensioned to a design value, so that the steel content of the uplift pile can be reduced, and the economical efficiency is improved.
本发明公开了一种无黏结预应力钻孔灌注抗拔桩施工方法，涉及建筑桩基基础施工技术领域，步骤如下：埋设钢护筒；钻孔；制作钢筋笼，钢筋笼包括钢筋笼本体、多个预应力钢绞组件和下端法兰盘，各个预应力钢绞组件均包括外套管、多根钢绞丝和张拉组件，多个外套管固定在钢筋笼本体内部，且沿钢筋笼的周向等距布置，与钢筋笼本体进行绑扎连接，在各个外套管内均安装若干根钢绞线，并将钢筋笼吊装至桩孔内；安装导管；向桩身内浇注混凝土，形成桩身混凝土；拔出导管和钢护筒；待桩身凝固后，进行桩侧浇注混凝土；安装桩顶法兰，对钢绞线进行张拉至设计值后，与桩顶法兰进行锚固，能够减少抗拔桩含钢量，提高经济性。
Construction method for unbonded prestressed cast-in-situ bored uplift pile
一种无黏结预应力钻孔灌注抗拔桩施工方法
ZHANG YANJIE (author) / YANG CHENGCHENG (author) / REN XUEZHI (author) / SHI CHENHUI (author) / QIN LEI (author)
2023-09-12
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
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