Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Construction method for enlarging uplift pile
The invention provides a construction method for enlarging an uplift pile. The construction method comprises the following steps: S1, constructing a pile hole; s2, a reaming section is constructed at the bottom of the pile hole; s3, hole cleaning is conducted on the bottom of the reaming section; s4, a conical drawing block is put in, and a drawing rod is arranged at the top of the drawing block; s5, lowering a reinforcement cage; a bending section is arranged at the position, lower than the top of the reaming section of the pile hole, of the reinforcement cage; s6, the drawing rod is drawn, so that the drawing block enters the central through hole of the reinforcement cage, the drawing block enables the longitudinal bars to rotate, and a reinforcement cage expanding section is formed; the drawing block falls down; s7, concrete is poured; construction of the expansion uplift pile is achieved through the steps. By arranging the structure of the bent section on the reinforcement cage and matching with the structure of the drawing block, the reinforcement cage entering the pile hole can form a diameter expanding structure, reinforcement arrangement of the hole expanding section is achieved, and the anti-pulling effect of the cast-in-situ bored pile is greatly improved. By adopting the scheme of arranging the spiral ribs in sections, the longitudinal ribs can conveniently rotate under the action of the drawing blocks, and a diameter expanding structure is achieved.
本发明提供一种扩大抗拔桩的施工方法，包括以下步骤：S1、施工桩孔；S2、在桩孔底部施工扩孔段；S3、扩孔段底部清孔；S4、下入拉拔块，拉拔块为圆锥形，拉拔块的顶部设有拉拔杆；S5、下入钢筋笼；钢筋笼在低于桩孔的扩孔段顶部的位置设有弯折段；S6、拉拔拉拔杆，使拉拔块进入到钢筋笼中心通孔，拉拔块使纵筋转动，构成钢筋笼扩径段；落下拉拔块；S7、浇筑混凝土；通过以上步骤实现膨胀抗拔桩的施工。通过在钢筋笼上设置弯折段的结构，配合拉拔块的结构，能够使下到桩孔内的钢筋笼，形成扩径结构，实现扩孔段的布筋，大幅提高钻孔灌注桩的抗拔效果。采用分段布置螺旋筋的方案，便于纵筋在拉拔块的作用下转动，实现扩径结构。
Construction method for enlarging uplift pile
The invention provides a construction method for enlarging an uplift pile. The construction method comprises the following steps: S1, constructing a pile hole; s2, a reaming section is constructed at the bottom of the pile hole; s3, hole cleaning is conducted on the bottom of the reaming section; s4, a conical drawing block is put in, and a drawing rod is arranged at the top of the drawing block; s5, lowering a reinforcement cage; a bending section is arranged at the position, lower than the top of the reaming section of the pile hole, of the reinforcement cage; s6, the drawing rod is drawn, so that the drawing block enters the central through hole of the reinforcement cage, the drawing block enables the longitudinal bars to rotate, and a reinforcement cage expanding section is formed; the drawing block falls down; s7, concrete is poured; construction of the expansion uplift pile is achieved through the steps. By arranging the structure of the bent section on the reinforcement cage and matching with the structure of the drawing block, the reinforcement cage entering the pile hole can form a diameter expanding structure, reinforcement arrangement of the hole expanding section is achieved, and the anti-pulling effect of the cast-in-situ bored pile is greatly improved. By adopting the scheme of arranging the spiral ribs in sections, the longitudinal ribs can conveniently rotate under the action of the drawing blocks, and a diameter expanding structure is achieved.
本发明提供一种扩大抗拔桩的施工方法，包括以下步骤：S1、施工桩孔；S2、在桩孔底部施工扩孔段；S3、扩孔段底部清孔；S4、下入拉拔块，拉拔块为圆锥形，拉拔块的顶部设有拉拔杆；S5、下入钢筋笼；钢筋笼在低于桩孔的扩孔段顶部的位置设有弯折段；S6、拉拔拉拔杆，使拉拔块进入到钢筋笼中心通孔，拉拔块使纵筋转动，构成钢筋笼扩径段；落下拉拔块；S7、浇筑混凝土；通过以上步骤实现膨胀抗拔桩的施工。通过在钢筋笼上设置弯折段的结构，配合拉拔块的结构，能够使下到桩孔内的钢筋笼，形成扩径结构，实现扩孔段的布筋，大幅提高钻孔灌注桩的抗拔效果。采用分段布置螺旋筋的方案，便于纵筋在拉拔块的作用下转动，实现扩径结构。
Construction method for enlarging uplift pile
扩大抗拔桩的施工方法
ZHANG SHIKUI (Autor:in) / JIAO HONGGANG (Autor:in) / CHEN HUADONG (Autor:in) / YAN ZUOXIN (Autor:in) / ZHENG KAI (Autor:in) / YANG RUI (Autor:in) / QIN DABIN (Autor:in) / ZHANG ZHIYONG (Autor:in)
01.03.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
E02D
FOUNDATIONS
,
Gründungen
Uplift pile construction equipment, uplift pile and foundation pit supporting system
| Europäisches Patentamt | 2024