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A platform for research: civil engineering, architecture and urbanism
Construction method of bonded prestressed structure for reinforcing hollow slab bridge
The invention discloses a construction method of a bonded prestressed structure for reinforcing a hollow slab bridge. The anchoring toothed plate is mounted at the bottom of the hollow slab by the bonding prestressed structure; three steel strands of phi j8.6 are installed and tensioned; shear bars are arranged and a steel wire mesh is installed at the bottom of the plate; and high-strength tensile mortar is jetted in batches in the areas of the prestressed tendons and the toothed plate. The bonded prestressed structure for reinforcing the hollow slab bridge is convenient and rapid to construct, and through the prestressed steel strand and the tensile mortar applied to the bottom of the hollow slab, the bearing capacity of the hollow slab can be effectively improved, the section height is increased, the structural rigidity is improved, and the structural durability is remarkably improved; compared with a traditional prestress reinforcing method, under the condition that the bearing capacity is improved at the same level, the structure is simple, the self weight is light, the structure size of newly-added concrete can be reduced, the increased self weight of the hollow slab is reduced, and the prestress reinforcing effect is improved.
本发明公开了一种用于空心板桥加固的有粘结预应力结构的施工方法。所述粘结预应力结构在空心板板底安装锚固齿板；安装并张拉Φj8.6三股钢绞线；在板底设置剪力筋并安装钢丝网；在预应力筋和齿板区域分批次喷注高强抗拉砂浆。本发明所述的用于空心板桥加固的有粘结预应力结构施工方便、快捷，通过施加在空心板板底的预应力钢绞线和抗拉砂浆，能够有效提高空心板的承载能力，增加截面高度并提高结构刚度，显著提升结构耐久性；相对于传统预应力加固法，在提高承载力水平相同的条件下，本发明结构构造简单、自重轻，能够减小新增混凝土的结构尺寸，减轻空心板增加的自重，提高预应力加固效果。
Construction method of bonded prestressed structure for reinforcing hollow slab bridge
The invention discloses a construction method of a bonded prestressed structure for reinforcing a hollow slab bridge. The anchoring toothed plate is mounted at the bottom of the hollow slab by the bonding prestressed structure; three steel strands of phi j8.6 are installed and tensioned; shear bars are arranged and a steel wire mesh is installed at the bottom of the plate; and high-strength tensile mortar is jetted in batches in the areas of the prestressed tendons and the toothed plate. The bonded prestressed structure for reinforcing the hollow slab bridge is convenient and rapid to construct, and through the prestressed steel strand and the tensile mortar applied to the bottom of the hollow slab, the bearing capacity of the hollow slab can be effectively improved, the section height is increased, the structural rigidity is improved, and the structural durability is remarkably improved; compared with a traditional prestress reinforcing method, under the condition that the bearing capacity is improved at the same level, the structure is simple, the self weight is light, the structure size of newly-added concrete can be reduced, the increased self weight of the hollow slab is reduced, and the prestress reinforcing effect is improved.
本发明公开了一种用于空心板桥加固的有粘结预应力结构的施工方法。所述粘结预应力结构在空心板板底安装锚固齿板；安装并张拉Φj8.6三股钢绞线；在板底设置剪力筋并安装钢丝网；在预应力筋和齿板区域分批次喷注高强抗拉砂浆。本发明所述的用于空心板桥加固的有粘结预应力结构施工方便、快捷，通过施加在空心板板底的预应力钢绞线和抗拉砂浆，能够有效提高空心板的承载能力，增加截面高度并提高结构刚度，显著提升结构耐久性；相对于传统预应力加固法，在提高承载力水平相同的条件下，本发明结构构造简单、自重轻，能够减小新增混凝土的结构尺寸，减轻空心板增加的自重，提高预应力加固效果。
Construction method of bonded prestressed structure for reinforcing hollow slab bridge
一种用于空心板桥加固的有粘结预应力结构的施工方法
MOU KAI (author) / LIU TAO (author) / HUANG SHUAI (author) / CHEN JUNJUN (author) / ZHANG KUN (author) / JIN XIUHONG (author) / AN PENG (author) / CHEN YAJUN (author) / ZHAO BOWEN (author) / ZHANG XUAN (author)
2021-05-28
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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