A steel-concrete combined bridge expansion device
A telescopic device, combined technology, applied in the direction of bridges, bridge construction, bridge parts, etc., can solve the problems of unfavorable force on bridges, affecting driving comfort, and unfavorable forces on expansion devices.
Active Publication Date: 2021-07-13
李永君 +1
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Problems solved by technology
The car jumping at the bridge head affects the driving comfort, and the impact of the vehicle load is relatively large, which is not good for the force of the bridge, and it is also not good for the force of the expansion device, which greatly reduces the effective service life of the expansion joint device
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[0020] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0021] The purpose of the present invention is to provide a steel-concrete combined bridge expansion device to solve the above-mentioned problems in the prior art, alleviate the phenomenon of vehicle jumping at the bridge head at the expansion joint, and improve driving comfort.
[0022] In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention will be further described in detail below in con...
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The invention discloses a steel-concrete combined bridge telescopic device, which comprises a cover beam, a beam body and a prefabricated combined telescopic structure, the cover beam connects two adjacent beam bodies, and the prefabricated combined telescopic structure includes a central The first telescopic part and the second telescopic part arranged symmetrically, there is a gap between the first telescopic part and the second telescopic part to form an expansion joint, and the telescopic part is arranged on the raised part of the cover beam. The expansion joints are arranged on both sides of the cover beam, and the present invention reduces one expansion joint. The prefabricated combined expansion structure can effectively prevent uneven settlement on both sides of the expansion joint, ensure the flatness of the prefabricated combined expansion structure, and reduce the The phenomenon of jumping at the bridge head is beneficial to improving the driving comfort and improving the durability and service life of the telescopic device. At the same time, the pre-embedded ring steel bars and anchor steel plates in the prefabricated slabs improve the durability of the prefabricated composite telescopic structure, and improve the construction quality and construction efficiency.
Description
technical field [0001] The invention relates to the technical field of simply supported bridge structures, in particular to a steel-concrete combined bridge expansion device. Background technique [0002] Simply supported girder bridge is a girder bridge whose main load-bearing structure is a girder whose two ends are respectively supported on a movable support and a hinged support. Bridge type, its structure is simple, easy to erect, and the internal force of the structure is not affected by the deformation of the foundation and the change of temperature. [0003] The concrete prefabricated beams of simply supported beam bridges are usually supported on the shoulders on both sides of the convex part of the "convex" concrete cover beam on the top of the bridge pier, and expansion joints are respectively set between the convex part of the cover beam and the prefabricated beams at both ends to meet the requirements of the upper part of the bridge. The deformation of the struc...
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IPC IPC(8): E01D19/06
CPCE01D19/06
Inventor 李永君刘玉擎
Owner 李永君