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A platform for research: civil engineering, architecture and urbanism
Prestressed concrete hollow square pile
The invention relates to the field of prestressed concrete hollow square piles, and discloses a prestressed concrete hollow square pile. The prestressed concrete hollow square pile comprises a pile body, wherein the cross section of the pile body is arranged to be a square outside and hollow inside circle, transition arcs are arranged at the four corners of the pile body, and each transition arc is in a shape of one section of an oval/parabola; a reinforcement cage is arranged in the pile body and comprises prestressed steel bars and a plurality of spiral stirrups, the spiral stirrups are arranged in the vertical direction, a plurality of grooves are formed in the surface of the pile body, a round through hole in the center of the pile body is formed in concrete through a centrifugal process, and the thickness of a reinforced concrete protection layer on the outermost layer of the pile body is larger than or equal to 35mm. The prestressed concrete hollow square pile has the beneficial effects that 1, the pile body is easy to demold during production, and the production efficiency and the yield are improved; 2, the effective cross section of the corner of the pile body can be reduced through the oval/parabola transition arcs, and therefore the bearing capacity of the pile body is improved; and 3, an embedded structure can be formed between the grooves and a soil body, and therefore the effect of improving the friction force between the pile body and the soil body is achieved.
本申请涉及预应力混凝土空心方桩的领域，公开了一种预应力混凝土空心方桩，其包括桩体，桩体的横截面设置为外方内空心圆，桩体的四角处设有过渡弧，过渡弧的形状为椭圆形/抛物线中的一段，桩体内设置有钢筋笼，钢筋笼包括预应力钢棒和螺旋箍筋，螺旋箍筋设有若干且沿竖直方向设置，桩体表面设有若干凹槽，混凝土通过离心工艺形成桩体中央的圆形通孔，桩体最外层的钢筋混凝土保护层厚度≥35mm。本申请具有1、桩体在生产时易于脱模，提高生产效率和良品率；2、椭圆形/抛物线的过渡弧可以降低桩体在转角处的有效横截面的减小，从而提高桩身承载力；3、凹槽可以与土体之间形成嵌合结构，从而提高桩体与土体之间摩擦力的效果。
Prestressed concrete hollow square pile
The invention relates to the field of prestressed concrete hollow square piles, and discloses a prestressed concrete hollow square pile. The prestressed concrete hollow square pile comprises a pile body, wherein the cross section of the pile body is arranged to be a square outside and hollow inside circle, transition arcs are arranged at the four corners of the pile body, and each transition arc is in a shape of one section of an oval/parabola; a reinforcement cage is arranged in the pile body and comprises prestressed steel bars and a plurality of spiral stirrups, the spiral stirrups are arranged in the vertical direction, a plurality of grooves are formed in the surface of the pile body, a round through hole in the center of the pile body is formed in concrete through a centrifugal process, and the thickness of a reinforced concrete protection layer on the outermost layer of the pile body is larger than or equal to 35mm. The prestressed concrete hollow square pile has the beneficial effects that 1, the pile body is easy to demold during production, and the production efficiency and the yield are improved; 2, the effective cross section of the corner of the pile body can be reduced through the oval/parabola transition arcs, and therefore the bearing capacity of the pile body is improved; and 3, an embedded structure can be formed between the grooves and a soil body, and therefore the effect of improving the friction force between the pile body and the soil body is achieved.
本申请涉及预应力混凝土空心方桩的领域，公开了一种预应力混凝土空心方桩，其包括桩体，桩体的横截面设置为外方内空心圆，桩体的四角处设有过渡弧，过渡弧的形状为椭圆形/抛物线中的一段，桩体内设置有钢筋笼，钢筋笼包括预应力钢棒和螺旋箍筋，螺旋箍筋设有若干且沿竖直方向设置，桩体表面设有若干凹槽，混凝土通过离心工艺形成桩体中央的圆形通孔，桩体最外层的钢筋混凝土保护层厚度≥35mm。本申请具有1、桩体在生产时易于脱模，提高生产效率和良品率；2、椭圆形/抛物线的过渡弧可以降低桩体在转角处的有效横截面的减小，从而提高桩身承载力；3、凹槽可以与土体之间形成嵌合结构，从而提高桩体与土体之间摩擦力的效果。
Prestressed concrete hollow square pile
预应力混凝土空心方桩
ZHANG HONGBING (author) / MIAO HAILIN (author) / LI YANPING (author) / CAO JIAN (author) / XU DEGANG (author)
2021-06-25
Patent
Electronic Resource
Chinese
IPC:
E02D
FOUNDATIONS
,
Gründungen
Hollow prestressed concrete pile
Engineering Index Backfile | 1954
Hollow prestressed concrete pile
Engineering Index Backfile | 1954
Efficient prestressed hollow square pile core concrete pouring method
| European Patent Office | 2022