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A platform for research: civil engineering, architecture and urbanism
Box girder bottom plate reinforcing structure, construction method thereof, box girder and box girder bridge
The invention relates to a box girder bottom plate reinforcing structure which comprises an anchoring cross beam and an external prestress plate, wherein the length direction of the anchoring cross beam is parallel to the transverse direction of a box girder, the bottom of the anchoring cross beam is fixedly connected with the box girder bottom plate, and/or the two ends of the anchoring cross beam are fixedly connected with two box girder webs respectively, and the external prestress plate is anchored on the anchoring cross beam through anchor cable tensioning. In addition, the invention further relates to a box girder adopting the box girder bottom plate reinforcing structure, a box girder bridge adopting the box girder and a construction method of the box girder bottom plate reinforcingstructure. The anchoring cross beam is arranged in the box chamber, the structural integrity of the box girder and the transverse rigidity of the bottom plate of the box girder can be improved, the anchoring cross beam is longitudinally perpendicular to the bottom plate, and longitudinal cracks of the bottom plate can be restrained from happening and expanding; by arranging the external prestressed plate, the external prestressed plate is tensioned and anchored on the anchoring cross beam through the anchor cable, transverse prepressing stress can be provided for the bottom plate, and occurrence and expansion of longitudinal cracks of the bottom plate can be reduced and restrained.
本发明涉及一种箱梁底板加固结构，包括锚固横梁和体外预应力板，锚固横梁的长度方向平行于箱梁横向，锚固横梁的底部与箱梁底板固连和/或锚固横梁的两端分别与两块箱梁腹板固连，体外预应力板通过锚索张拉锚固在锚固横梁上。另外还涉及采用上述箱梁底板加固结构的箱梁、采用该箱梁的箱梁桥以及上述箱梁底板加固结构的施工方法。本发明通过在箱室内设置锚固横梁，能够增加箱梁结构整体性和箱梁底板的横向刚度，该锚固横梁与底板纵向垂直，有利于抑制底板纵向裂纹的发生和扩展；通过设置体外预应力板，并且该体外预应力板通过锚索张拉锚固在锚固横梁上，可对底板提供横向的预压应力，可减小和约束底板纵向裂缝的发生和扩展。
Box girder bottom plate reinforcing structure, construction method thereof, box girder and box girder bridge
The invention relates to a box girder bottom plate reinforcing structure which comprises an anchoring cross beam and an external prestress plate, wherein the length direction of the anchoring cross beam is parallel to the transverse direction of a box girder, the bottom of the anchoring cross beam is fixedly connected with the box girder bottom plate, and/or the two ends of the anchoring cross beam are fixedly connected with two box girder webs respectively, and the external prestress plate is anchored on the anchoring cross beam through anchor cable tensioning. In addition, the invention further relates to a box girder adopting the box girder bottom plate reinforcing structure, a box girder bridge adopting the box girder and a construction method of the box girder bottom plate reinforcingstructure. The anchoring cross beam is arranged in the box chamber, the structural integrity of the box girder and the transverse rigidity of the bottom plate of the box girder can be improved, the anchoring cross beam is longitudinally perpendicular to the bottom plate, and longitudinal cracks of the bottom plate can be restrained from happening and expanding; by arranging the external prestressed plate, the external prestressed plate is tensioned and anchored on the anchoring cross beam through the anchor cable, transverse prepressing stress can be provided for the bottom plate, and occurrence and expansion of longitudinal cracks of the bottom plate can be reduced and restrained.
本发明涉及一种箱梁底板加固结构，包括锚固横梁和体外预应力板，锚固横梁的长度方向平行于箱梁横向，锚固横梁的底部与箱梁底板固连和/或锚固横梁的两端分别与两块箱梁腹板固连，体外预应力板通过锚索张拉锚固在锚固横梁上。另外还涉及采用上述箱梁底板加固结构的箱梁、采用该箱梁的箱梁桥以及上述箱梁底板加固结构的施工方法。本发明通过在箱室内设置锚固横梁，能够增加箱梁结构整体性和箱梁底板的横向刚度，该锚固横梁与底板纵向垂直，有利于抑制底板纵向裂纹的发生和扩展；通过设置体外预应力板，并且该体外预应力板通过锚索张拉锚固在锚固横梁上，可对底板提供横向的预压应力，可减小和约束底板纵向裂缝的发生和扩展。
Box girder bottom plate reinforcing structure, construction method thereof, box girder and box girder bridge
箱梁底板加固结构及其施工方法、箱梁以及箱梁桥
LIU ZHEN (author) / ZHU MENGJUN (author) / CHEN WEICHAO (author) / WANG XIAOFENG (author) / LI JUN (author) / CHEN ZHICHUN (author) / XU YAN (author) / HU ZHEN (author) / SHENG KANG (author) / ZHAI FENG (author)
2020-10-30
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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