Device for preventing curved beam bridge from horizontal displacement and construction method thereof
A curved and horizontal technology, applied in the field of girder bridge protection devices, can solve problems such as affecting the appearance of the bridge, increasing the size of the bridge pier and abutment, and difficult maintenance
Active Publication Date: 2015-09-02
BEIJING MUNICIPAL ENG RES INST +2
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Problems solved by technology
Enlarging the cross-bridge dimension of bridge piers and caps will not only affect the beauty of the bridge but also increase the construction cost
In addition, the above-mentioned anti-sideshift device is relatively difficult to maintain in the later stage
Method used
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specific Embodiment approach
[0024] Such as figure 1 , figure 2 As shown, under the situation that at least two traditional bearings 1 are used on each pier and cap 2 at the bottom of the curved girder bridge, the specific embodiment of the present invention is:
[0025] A pier pre-embedded steel plate 3 is fixed on the outside of the abutments and caps 2 of several piers in the lower part of the curved girder bridge. The embedded steel plate 3 of the bridge pier is connected to the lower member 6 by the embedded bolt 4 and the nut 5 . The pier pre-embedded steel plate 3, pre-embedded bolts 4, nuts 5 and lower member 6 constitute the outer assembly. In the upper girder body 7 of the curved girder bridge, an embedded steel plate 8 in the girder is correspondingly fixed on the left side of the lower component 6 . The embedded steel plate 8 in the beam is connected to the upper member 9 outside the beam body 7 by the embedded bolt 4-1 and the nut 5-1. The embedded steel plate 8 in the beam, the embedded...
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The invention relates to a device for preventing a curved beam bridge from horizontal displacement and a construction method thereof. The device comprises an outer component comprising a lower member and an inner component comprising an upper member. The upper member and the lower member are both formed to be L-shaped by plane connecting plates and vertical main supports. The left and right sides of each vertical main support are curved surfaces having equal upper and lower curvatures and consistent with the horizontal bending direction and the bending radius of the curved beam bridge. The inner and outer components and a combination, which fills between the same, of rubber and steel plates, are disposed between a pier and a beam to transfer horizontal displacement of the beam. Small displacements of the beam are prevented by the combination of rubber and steel plates; large displacements are constrained and absorbed by the lower member to allow magnitudes. When the displacements destroy the combination of rubber and steel plates, a combination of rubber and steel plates redesigned and manufactured according to calculation is used for replacing the destroyed one so as to prevent excessive displacements. By the use of the construction method, the device can effectively prevent the beam-falling caused by the horizontal displacement of the beam and an earthquake, and the maintenance of the device is easy. Besides, the device is installed on the original pier or pier cap, and the costs of enlarging the pier and pier cap are reduced.
Description
technical field [0001] The invention relates to a protection device and a method for a girder bridge, in particular to a device and a construction method for preventing horizontal lateral displacement of a curved girder bridge. Background technique [0002] Due to the limitations of traffic functions and terrain conditions, urban viaducts and overpasses mostly use curved bridges, special-shaped variable-width bridges or ramp bridges. Curved girder bridges, especially small-radius curved girder bridges, are prone to defects such as hollow support at the inner end of the continuous girder curve or radial overall lateral displacement of the curved girder body to the outer side of the curve due to the structural stress characteristics of the curved girder bridge. The radial deviation of the curved girder bridge body cannot be recovered after the disease occurs, and can only increase year by year. The survey found that the cumulative horizontal side shift of a 250-meter-radius i...
Claims
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Login to View More IPC IPC(8): E01D19/00E01D19/04E01D21/00
Inventor 李文华贺美德王光明王贯明邵继有何少春刘丙宇常悦李硕陈辉薛会青刘继尧柳飞尹鹏涛
Owner BEIJING MUNICIPAL ENG RES INST