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A platform for research: civil engineering, architecture and urbanism
Large-span prefabricated ribbed prestressed hollow bidirectional laminated slab
The invention provides a large-span prefabricated ribbed prestressed hollow bidirectional laminated slab. The large-span prefabricated ribbed prestressed hollow bidirectional laminated slab comprisesprefabricated bottom plates, longitudinal ribs, transverse ribs and a post-cast layer, wherein the longitudinal ribs and the transverse ribs are arranged on the bottom plates in a staggered mode to form cells provided with light filling blocks; prestressed steel strands are arranged in the longitudinal ribs in the longitudinal direction, and steel bar meshes composed of longitudinal steel bars andtransverse steel bars are arranged in the bottom plates and positioned below the prestressed steel strands; a plurality of shear-resistant steel bars are pre-buried in the longitudinal ribs and the transverse ribs and protrude out of the upper surfaces of the longitudinal ribs and the transverse ribs, and a plurality of shear-resistant steel bars are pre-buried in the bottom plates and protrude out of the upper surfaces of the light filling blocks, and slurry leakage holes are pre-formed in the positions, provided with the shear-resistant steel bars, in the light filling blocks; connecting steel bars in lap joint with the transverse steel bars in the adjacent bottom plates are arranged in a joint area, and longitudinal through-length constructional steel bars are arranged; and laminated slab upper steel bars are arranged in the post-cast layer. The large-span prefabricated ribbed prestressed hollow bidirectional laminated slab is light in self-weight, free of reverse arches and suitable for guaranteeing cooperative work among bidirectional plates, the post-cast layer and the prefabricated plates, formwork erecting is not needed in the joint area, post-tension prestressed steel bars are not arranged, the structural stress is reliable, and the construction efficiency is high.
本发明提出了一种大跨度预制带肋预应力空心双向叠合板，包括预制的底板、纵肋和横肋及后浇层，纵肋和横肋在底板上交错设置形成设有轻质填充块的区格；在纵肋内沿纵向设置预应力钢绞线，在底板内且位于预应力钢绞线下方布置由纵向、横向钢筋组成的钢筋网片；在纵肋和横肋内且凸出于各自上表面处以及在底板内且凸出轻质填充块上表面处预埋多个抗剪钢筋，且在轻质填充块中设有抗剪钢筋的位置预设漏浆孔；在拼缝区设有与相邻底板内横向钢筋搭接的连接钢筋，并设有纵向通长构造钢筋；后浇层内设有叠合板上部钢筋。本发明自重轻、无反拱、适用于双向板、后浇层与预制板之间保证协同工作、拼缝区免支模且不设后张预应力钢筋，结构受力可靠，施工效率高。
Large-span prefabricated ribbed prestressed hollow bidirectional laminated slab
The invention provides a large-span prefabricated ribbed prestressed hollow bidirectional laminated slab. The large-span prefabricated ribbed prestressed hollow bidirectional laminated slab comprisesprefabricated bottom plates, longitudinal ribs, transverse ribs and a post-cast layer, wherein the longitudinal ribs and the transverse ribs are arranged on the bottom plates in a staggered mode to form cells provided with light filling blocks; prestressed steel strands are arranged in the longitudinal ribs in the longitudinal direction, and steel bar meshes composed of longitudinal steel bars andtransverse steel bars are arranged in the bottom plates and positioned below the prestressed steel strands; a plurality of shear-resistant steel bars are pre-buried in the longitudinal ribs and the transverse ribs and protrude out of the upper surfaces of the longitudinal ribs and the transverse ribs, and a plurality of shear-resistant steel bars are pre-buried in the bottom plates and protrude out of the upper surfaces of the light filling blocks, and slurry leakage holes are pre-formed in the positions, provided with the shear-resistant steel bars, in the light filling blocks; connecting steel bars in lap joint with the transverse steel bars in the adjacent bottom plates are arranged in a joint area, and longitudinal through-length constructional steel bars are arranged; and laminated slab upper steel bars are arranged in the post-cast layer. The large-span prefabricated ribbed prestressed hollow bidirectional laminated slab is light in self-weight, free of reverse arches and suitable for guaranteeing cooperative work among bidirectional plates, the post-cast layer and the prefabricated plates, formwork erecting is not needed in the joint area, post-tension prestressed steel bars are not arranged, the structural stress is reliable, and the construction efficiency is high.
本发明提出了一种大跨度预制带肋预应力空心双向叠合板，包括预制的底板、纵肋和横肋及后浇层，纵肋和横肋在底板上交错设置形成设有轻质填充块的区格；在纵肋内沿纵向设置预应力钢绞线，在底板内且位于预应力钢绞线下方布置由纵向、横向钢筋组成的钢筋网片；在纵肋和横肋内且凸出于各自上表面处以及在底板内且凸出轻质填充块上表面处预埋多个抗剪钢筋，且在轻质填充块中设有抗剪钢筋的位置预设漏浆孔；在拼缝区设有与相邻底板内横向钢筋搭接的连接钢筋，并设有纵向通长构造钢筋；后浇层内设有叠合板上部钢筋。本发明自重轻、无反拱、适用于双向板、后浇层与预制板之间保证协同工作、拼缝区免支模且不设后张预应力钢筋，结构受力可靠，施工效率高。
Large-span prefabricated ribbed prestressed hollow bidirectional laminated slab
一种大跨度预制带肋预应力空心双向叠合板
ZHU LIMIN (author) / TIAN CHUNYU (author)
2020-09-25
Patent
Electronic Resource
Chinese
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS
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