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A platform for research: civil engineering, architecture and urbanism
Reinforcing method of hollow slab girder bridge based on UHPC (Ultra High Performance Concrete)
The invention provides a reinforcing method of a hollow slab girder bridge based on UHPC (Ultra High Performance Concrete), and relates to the field of bridge reinforcing and repairing, the reinforcing method comprises the following steps: sequentially paving hinge joint local longitudinal steel bars, omega-shaped hinge joint steel bars, L-shaped steel bars and a steel bar mesh above a hollow slab, pouring UHPC above the hollow slab to form a reinforcing layer, and pouring an asphalt wearing layer on the reinforcing layer. The UHPC in the hinge joint and the omega-shaped hinge joint steel bars are matched for use, the shear bearing capacity and the crack resistance of the hinge joint can be greatly improved, the load transmission efficiency is improved, and the transverse connection rigidity between hollow plate beams is increased, so that transverse load distribution is improved, the situation that a single plate is stressed can be effectively avoided, and the service life of the hinge joint is prolonged. The stress integrity and stability of the hollow slab girder bridge are improved; meanwhile, the integrity between the reinforcing layer and the hollow slab girder is further enhanced through various other embedded reinforcing steel bars, in subsequent use, the stress participation degree of the reinforcing layer is improved, and the service life of the hollow slab girder bridge is prolonged.
本发明提供了一种基于UHPC的空心板梁桥的加固方法，涉及桥梁加固、修复领域，包括依次在空心板的上方铺设铰缝局部纵向钢筋、Ω型铰缝钢筋、L型钢筋和钢筋网，并向空心板的上方浇筑UHPC形成加固层，在加固层上浇筑沥青磨耗层，在本申请中，利用铰缝中的UHPC和Ω型铰缝钢筋的搭配使用，能够大幅度提升铰缝抗剪承载力、抗裂能力，提高载荷传递效率，增大了空心板梁间横向联结刚度，因而改善了横向载荷分布，能够有效的避免单板受力的情况，提升了空心板梁桥受力整体性和稳定性；同时其他植入的各种钢筋，进一步增强了加固层与空心板梁间的整体性，在后续的使用中，加固层参与受力的程度提高，延长空心板梁桥的使用寿命。
Reinforcing method of hollow slab girder bridge based on UHPC (Ultra High Performance Concrete)
The invention provides a reinforcing method of a hollow slab girder bridge based on UHPC (Ultra High Performance Concrete), and relates to the field of bridge reinforcing and repairing, the reinforcing method comprises the following steps: sequentially paving hinge joint local longitudinal steel bars, omega-shaped hinge joint steel bars, L-shaped steel bars and a steel bar mesh above a hollow slab, pouring UHPC above the hollow slab to form a reinforcing layer, and pouring an asphalt wearing layer on the reinforcing layer. The UHPC in the hinge joint and the omega-shaped hinge joint steel bars are matched for use, the shear bearing capacity and the crack resistance of the hinge joint can be greatly improved, the load transmission efficiency is improved, and the transverse connection rigidity between hollow plate beams is increased, so that transverse load distribution is improved, the situation that a single plate is stressed can be effectively avoided, and the service life of the hinge joint is prolonged. The stress integrity and stability of the hollow slab girder bridge are improved; meanwhile, the integrity between the reinforcing layer and the hollow slab girder is further enhanced through various other embedded reinforcing steel bars, in subsequent use, the stress participation degree of the reinforcing layer is improved, and the service life of the hollow slab girder bridge is prolonged.
本发明提供了一种基于UHPC的空心板梁桥的加固方法，涉及桥梁加固、修复领域，包括依次在空心板的上方铺设铰缝局部纵向钢筋、Ω型铰缝钢筋、L型钢筋和钢筋网，并向空心板的上方浇筑UHPC形成加固层，在加固层上浇筑沥青磨耗层，在本申请中，利用铰缝中的UHPC和Ω型铰缝钢筋的搭配使用，能够大幅度提升铰缝抗剪承载力、抗裂能力，提高载荷传递效率，增大了空心板梁间横向联结刚度，因而改善了横向载荷分布，能够有效的避免单板受力的情况，提升了空心板梁桥受力整体性和稳定性；同时其他植入的各种钢筋，进一步增强了加固层与空心板梁间的整体性，在后续的使用中，加固层参与受力的程度提高，延长空心板梁桥的使用寿命。
Reinforcing method of hollow slab girder bridge based on UHPC (Ultra High Performance Concrete)
一种基于UHPC的空心板梁桥的加固方法
WANG LIANHUA (author) / WU HUANZHENG (author) / HUANG ZHEBIAO (author) / GONG ZHIQUAN (author)
2023-10-17
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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