Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Structure for rapidly restoring hinge joint of hollow slab bridge and construction method thereof
The invention discloses a structure for rapidly restoring a hinge joint of a hollow slab bridge and a construction method thereof, which belong to the field of bridge engineering. The structure for rapidly restoring the hinge joint of the hollow slab bridge comprises a hinge joint crossing U-shaped bar, a sealing section, a coarse aggregate and a curing body, wherein the hinge joint crossing U-shaped bar is embedded upwards from the bottom surface of a hollow slab; the sealing section is arranged at the lower part of the hinge joint; the coarse aggregate is arranged on the sealing section; the curing body is formed by a high-expansion grout pressed to a coarse aggregate area and is used for enclosing the coarse aggregate; and a combined body of the coarse aggregate and the curing body is named as grouted aggregate concrete. According to the structure for rapidly restoring the hinge joint of the hollow slab bridge, the U-shaped reinforcing steel bar is used for resisting flexural-tensile stress in a transverse direction of the bridge and the grouted aggregate concrete is used for resisting the shear force between the slabs. An internal stress is generated in the grouted aggregate concrete through a high polymer formed by the high-expansion grout so that the shrinkage of the traditional hinge joint concrete is avoided; and through the internal stress, a positive pressure between a new concrete interface and an old concrete interface is increased, the bonding force between the interfaces is increased and the anti-shear capacity of the hinge joint is enhanced. The construction method for the structure for rapidly restoring the hinge joint of the hollow slab bridge, disclosed by the invention, is advantaged in that the construction speed is high; the hollow slab bridge can be rapidly opened for traffic; the curing effect of the structure is good; and standardized operation can be realized.
Structure for rapidly restoring hinge joint of hollow slab bridge and construction method thereof
The invention discloses a structure for rapidly restoring a hinge joint of a hollow slab bridge and a construction method thereof, which belong to the field of bridge engineering. The structure for rapidly restoring the hinge joint of the hollow slab bridge comprises a hinge joint crossing U-shaped bar, a sealing section, a coarse aggregate and a curing body, wherein the hinge joint crossing U-shaped bar is embedded upwards from the bottom surface of a hollow slab; the sealing section is arranged at the lower part of the hinge joint; the coarse aggregate is arranged on the sealing section; the curing body is formed by a high-expansion grout pressed to a coarse aggregate area and is used for enclosing the coarse aggregate; and a combined body of the coarse aggregate and the curing body is named as grouted aggregate concrete. According to the structure for rapidly restoring the hinge joint of the hollow slab bridge, the U-shaped reinforcing steel bar is used for resisting flexural-tensile stress in a transverse direction of the bridge and the grouted aggregate concrete is used for resisting the shear force between the slabs. An internal stress is generated in the grouted aggregate concrete through a high polymer formed by the high-expansion grout so that the shrinkage of the traditional hinge joint concrete is avoided; and through the internal stress, a positive pressure between a new concrete interface and an old concrete interface is increased, the bonding force between the interfaces is increased and the anti-shear capacity of the hinge joint is enhanced. The construction method for the structure for rapidly restoring the hinge joint of the hollow slab bridge, disclosed by the invention, is advantaged in that the construction speed is high; the hollow slab bridge can be rapidly opened for traffic; the curing effect of the structure is good; and standardized operation can be realized.
Structure for rapidly restoring hinge joint of hollow slab bridge and construction method thereof
WEI JIANDONG (Autor:in) / WANG FUMING (Autor:in) / SHI MINGSHENG (Autor:in) / LIU XIAOLONG (Autor:in) / ZHENG YUANXUN (Autor:in)
04.11.2015
Patent
Elektronische Ressource
Englisch
IPC:
E01D
BRIDGES
,
Brücken
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