A device for improving the anti-overturning capacity of single-column pier bridges under extreme loads
A single-pillar pier, anti-overturning technology, applied in bridges, bridge construction, bridge maintenance, etc., can solve problems affecting urban traffic, compress the space under the bridge, etc., and achieve the effect of improving anti-overturning ability
Active Publication Date: 2022-08-02
SHIJIAZHUANG TIEDAO UNIV
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Problems solved by technology
[0004] The invention aims to overcome the defects that the space under the bridge will be compressed during the reinforcement process of the single-column pier bridge in service in the city, which will affect the urban traffic during construction, and proposes a single-column pier bridge anti-overturning capacity lifting device under the action of extreme loads
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[0022] Attached below Figure 1-4 The specific embodiments of the present invention will be further described in detail.
[0023] like Figure 1-4 As shown in the figure, a device for improving the anti-overturning capacity of a single-column pier bridge under the action of extreme loads of the present invention includes a single-column pier and a box girder 4 arranged on the top thereof, and a concrete box 7 and a concrete box 7 are arranged on the inner top of the box girder 4 The arc-shaped rolling slideway 11 is connected to the bottom, and three mass blocks 12 and a rolling device 20 arranged on the rolling slideway 11 are symmetrically distributed along the cross-sectional center line of the box girder 4 . The concrete box 7 is anchored on the top plate 6 and the webs 10 on both sides of the box girder 4 by the anchor bolts 16. The anchoring on three sides will make the concrete box 7 firmly fixed on the box girder 4 to ensure that the whole device will not fall. The a...
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The invention discloses a device for improving the anti-overturning capacity of a single-column pier bridge under the action of extreme loads, which belongs to the technical field of structural engineering. It includes three mass blocks and corresponding linear slides, as well as a rolling device and corresponding arc rolling slides. The mass block and the rolling device are connected as a whole with steel strands. When the eccentricity of the extreme vertical overloaded vehicle reaches a certain level, the box girder is inclined, and the slideway of the rolling device is deformed in the direction of the inclination of the box girder. At this time, the rolling device rolls toward the sinking side of the box girder, thereby making the mass block in the opposite direction. Movement, the mass provides an opposite bending moment, which improves the anti-overturning ability of the single-column pier bridge. When the extreme vertical overloaded vehicle is eccentric, the rolling device will move to the center line of the box girder section due to its gravity, and then the mass block will move back to its original position through the steel strand until the rolling device returns to the middle of the two limit blocks. The entire device is restored to its original state.
Description
technical field [0001] The invention relates to a device for improving the anti-overturning capacity of a single-column pier bridge under the action of extreme loads, and belongs to the technical field of structural engineering. Background technique [0002] With the rapid development of my country's urban economy, the requirements for urban bridges are getting higher and higher, and single-column pier bridges are used more and more in cities because of their advantages of saving land, beautiful appearance, transparent vision, and smooth lines. , become an important life hub project of the city. However, the single-column pier bridge may encounter the eccentric effect of extreme vertical overload vehicles, resulting in the overturning and collapse of the single-column pier bridge, which brings huge economic losses and casualties to the city. [0003] At present, the anti-overturn control of urban single-column pier bridges is mainly to strengthen the substructure of the brid...
Claims
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IPC IPC(8): E01D22/00E01D19/02
CPCE01D22/00E01D19/02
Inventor 李勇于子杰武启帆张彦兵许宏伟陈树礼刘永前
Owner SHIJIAZHUANG TIEDAO UNIV