A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Rapid maintenance structure and method for small hinge joint of plate girder
The invention relates to a rapid maintenance structure and method for a small hinge joint of a plate girder, web L-shaped steel bars are planted in girder webs on two sides of the hinge joint to be reinforced and maintained and in an old concrete pavement layer, a new concrete pavement layer and a new asphalt pavement layer are poured on the old concrete pavement layer, and a layer of steel bar mesh is arranged in the new concrete pavement layer; the new concrete pavement layer is made of quick-hardening ultra-high performance concrete, the compressive strength of the new concrete pavement layer within 2 hours is larger than or equal to 30 Mpa, the axis tensile strength of the new concrete pavement layer in 3 days is larger than or equal to 5 Mpa, and the bonding strength of new and old concrete in 3 days is larger than or equal to 1.5 Mpa. According to the structure and the method, after quick-hardening ultra-high-performance concrete is directly poured on an existing bridge deck concrete pavement, an asphalt surface layer is paved, so that the original pavement chiseling time and construction operation time are saved; and meanwhile, web L-shaped steel bars are planted at the bridge deck pavement positions of the hinge joints, and the steel bars are welded, so that the interlayer shear resistance of new and old bridge deck pavement is improved, and the new and old bridge deck pavement and the old bridge deck pavement are stressed together.
本发明涉及一种板梁小铰缝快速维修结构及方法，待加固维修铰缝两侧的梁腹和旧混凝土铺装层内种植腹板L形钢筋，旧混凝土铺装层上面浇筑新混凝土铺装层和新沥青铺装层，新混凝土铺装层中布设一层钢筋网片；新混凝土铺装层采用快硬型超高性能混凝土，其2小时内抗压强度≥30Mpa，3d轴心抗拉强度≥5Mpa，3d新旧混凝土粘结强度≥1.5Mpa。该结构及方法在既有桥面混凝土铺装上直接浇筑快硬型超高性能混凝土后，再摊铺沥青面层，节省了原有铺装凿除时间和施工作业时间；同时该结构在铰缝处的桥面铺装位置上种植有腹板L形钢筋，通过将钢筋进行焊接，提高了新旧桥面铺装的层间抗剪性能，有利于两者共同受力。
Rapid maintenance structure and method for small hinge joint of plate girder
The invention relates to a rapid maintenance structure and method for a small hinge joint of a plate girder, web L-shaped steel bars are planted in girder webs on two sides of the hinge joint to be reinforced and maintained and in an old concrete pavement layer, a new concrete pavement layer and a new asphalt pavement layer are poured on the old concrete pavement layer, and a layer of steel bar mesh is arranged in the new concrete pavement layer; the new concrete pavement layer is made of quick-hardening ultra-high performance concrete, the compressive strength of the new concrete pavement layer within 2 hours is larger than or equal to 30 Mpa, the axis tensile strength of the new concrete pavement layer in 3 days is larger than or equal to 5 Mpa, and the bonding strength of new and old concrete in 3 days is larger than or equal to 1.5 Mpa. According to the structure and the method, after quick-hardening ultra-high-performance concrete is directly poured on an existing bridge deck concrete pavement, an asphalt surface layer is paved, so that the original pavement chiseling time and construction operation time are saved; and meanwhile, web L-shaped steel bars are planted at the bridge deck pavement positions of the hinge joints, and the steel bars are welded, so that the interlayer shear resistance of new and old bridge deck pavement is improved, and the new and old bridge deck pavement and the old bridge deck pavement are stressed together.
本发明涉及一种板梁小铰缝快速维修结构及方法，待加固维修铰缝两侧的梁腹和旧混凝土铺装层内种植腹板L形钢筋，旧混凝土铺装层上面浇筑新混凝土铺装层和新沥青铺装层，新混凝土铺装层中布设一层钢筋网片；新混凝土铺装层采用快硬型超高性能混凝土，其2小时内抗压强度≥30Mpa，3d轴心抗拉强度≥5Mpa，3d新旧混凝土粘结强度≥1.5Mpa。该结构及方法在既有桥面混凝土铺装上直接浇筑快硬型超高性能混凝土后，再摊铺沥青面层，节省了原有铺装凿除时间和施工作业时间；同时该结构在铰缝处的桥面铺装位置上种植有腹板L形钢筋，通过将钢筋进行焊接，提高了新旧桥面铺装的层间抗剪性能，有利于两者共同受力。
Rapid maintenance structure and method for small hinge joint of plate girder
一种板梁小铰缝快速维修结构及方法
ZHANG SHUJUAN (author) / TAO DAIBANG (author) / KIM OK-JOO (author) / MAO WEISHENG (author) / YANG KUN (author) / YANG DENGFENG (author) / CHEN LIUJUN (author) / LIU ZHAO (author)
2024-09-10
Patent
Electronic Resource
Chinese
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