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A platform for research: civil engineering, architecture and urbanism
Prefabricated prestressed concrete hollow beam
A prefabricated prestressed concrete hollow beam relates to the field of building structure engineering and comprises a hollow beam body, a cover plate and a reinforcement cage arranged in the hollow beam body, the section of the hollow beam body is U-shaped, the cover plate is arranged at the inner edge of an upper opening of the hollow beam body, and the cover plate and the hollow beam body are matched with each other to form a cavity. The steel reinforcement framework comprises bottom ribs, upper prestressed ribs and U-shaped stirrups, a plurality of bottom prestressed ribs are arranged between the left bottom rib and the right bottom rib, and the bottom prestressed ribs and the bottom ribs are arranged in parallel; the prestressed tendons are tensioned through a pre-tensioning method, concrete is poured to a certain height and placed into the inner formwork to be fixed, the concrete is poured into a gap between the inner formwork and the outer formwork, after the concrete is formed, the concrete is released, redundant prestressed tendons are cut off, the formworks are removed, and the cover plate is bonded to the groove through mortar to form a closed cavity. The self-weight of the structure is reduced, the using amount of steel bars and concrete is reduced, and the anti-cracking and anti-deformation capacity of the component is greatly improved.
一种预制式预应力混凝土空心梁，涉及建筑结构工程领域，包括空心梁本体、盖板和设置在空心梁本体内的钢筋骨架，空心梁本体的截面为U型，盖板设置在空心梁本体的上口内沿处，盖板和空心梁本体相互配合构成空腔，所述钢筋骨架包括底筋、上部预应力筋和U型箍筋，在左右两根底筋之间设有若干底部预应力筋，底部预应力筋和底筋平行设置；采用先张法对预应力筋进行张拉，混凝土浇至一定高度放入内模板并固定，将内模板与外模之间的空隙浇灌上混凝土，待混凝土成型后放张并剪切多余的预应力筋，拆除模板并将盖板通过砂浆粘结在凹槽上形成封闭的空腔。本发明减轻了结构自重，减少了钢筋和混凝土用量，大幅度提高了构件的抗开裂和抗变形能力。
Prefabricated prestressed concrete hollow beam
A prefabricated prestressed concrete hollow beam relates to the field of building structure engineering and comprises a hollow beam body, a cover plate and a reinforcement cage arranged in the hollow beam body, the section of the hollow beam body is U-shaped, the cover plate is arranged at the inner edge of an upper opening of the hollow beam body, and the cover plate and the hollow beam body are matched with each other to form a cavity. The steel reinforcement framework comprises bottom ribs, upper prestressed ribs and U-shaped stirrups, a plurality of bottom prestressed ribs are arranged between the left bottom rib and the right bottom rib, and the bottom prestressed ribs and the bottom ribs are arranged in parallel; the prestressed tendons are tensioned through a pre-tensioning method, concrete is poured to a certain height and placed into the inner formwork to be fixed, the concrete is poured into a gap between the inner formwork and the outer formwork, after the concrete is formed, the concrete is released, redundant prestressed tendons are cut off, the formworks are removed, and the cover plate is bonded to the groove through mortar to form a closed cavity. The self-weight of the structure is reduced, the using amount of steel bars and concrete is reduced, and the anti-cracking and anti-deformation capacity of the component is greatly improved.
一种预制式预应力混凝土空心梁，涉及建筑结构工程领域，包括空心梁本体、盖板和设置在空心梁本体内的钢筋骨架，空心梁本体的截面为U型，盖板设置在空心梁本体的上口内沿处，盖板和空心梁本体相互配合构成空腔，所述钢筋骨架包括底筋、上部预应力筋和U型箍筋，在左右两根底筋之间设有若干底部预应力筋，底部预应力筋和底筋平行设置；采用先张法对预应力筋进行张拉，混凝土浇至一定高度放入内模板并固定，将内模板与外模之间的空隙浇灌上混凝土，待混凝土成型后放张并剪切多余的预应力筋，拆除模板并将盖板通过砂浆粘结在凹槽上形成封闭的空腔。本发明减轻了结构自重，减少了钢筋和混凝土用量，大幅度提高了构件的抗开裂和抗变形能力。
Prefabricated prestressed concrete hollow beam
一种预制式预应力混凝土空心梁
LI QINGSONG (author) / PAN CAO WEI (author) / ZHU HONG (author) / YE BIN (author) / TIAN ANGUO (author)
2023-03-28
Patent
Electronic Resource
Chinese
IPC:
E04C
STRUCTURAL ELEMENTS
,
Bauelemente
/
B28B
Formgeben von Ton oder anderen keramischen Stoffzusammensetzungen, Schlacke oder von Mischungen, die zementartiges Material enthalten, z.B. Putzmörtel
,
SHAPING CLAY OR OTHER CERAMIC COMPOSITIONS, SLAG OR MIXTURES CONTAINING CEMENTITIOUS MATERIAL, e.g. PLASTER
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