An inclined bridge bearing system

Abstract

The present invention relates to an inclined bridge bearing system, which includes a main beam, a pre-embedded steel plate, a bearing, a bearing padstone and a bridge pier. The bearing padstone is installed on the bridge pier and has the following characteristics: the bridge pier is inclined, and a beam bottom wedge block is integrally cast at the bottom of the main beam. The pre-embedded steel plate is partially cast on the beam bottom wedge block, and the pre-embedded steel plate is fastened to the upper bearing steel plate in the bearing through a first fastener. The lower bearing steel plate in the bearing is fastened to the bearing padstone through a second fastener. In the bridge bearing system provided by the present invention, since the upper load acts vertically on the top of the bridge pier through the bearing, only axial force is generated in the bridge pier under the action of symmetric loads. Even when the bearing arranged horizontally symmetrically under non-uniform stress can self-balance most of the tangential forces, thus avoiding excessive shear force and bending moment on the bridge pier, so that the bridge bearing system provided by the present invention has the advantages of strong structural adaptability and dynamic stress self-balancing.

Description

Technical Field

[0001] The present invention relates to the technical field of bridge structures, and particularly to a bridge bearing system arranged obliquely. Background Art

[0002] A bearing is an important force transmission device connecting the upper structure and the lower structure of a bridge. Its functions are to support the beam body and meet the deformation requirements of the beam body under variable loads and temperature loads; at the same time, the bearing must also meet certain installation, maintenance, and repair requirements and is an important component related to the safety of the bridge structure.

[0003] Bridge bearings are usually arranged according to horizontal direction requirements and transmit the bearing reaction force of the upper structure. This arrangement form is mainly to ensure that the bearing clearly bears the vertical and horizontal forces caused by dead loads and live loads, meets the axial force-bearing state, transmits the load to the lower structure through the bearing, and at the same time can complete the horizontal displacement and beam-end rotation of the beam body structure caused by braking forces, temperature, shrinkage and creep of concrete, and load effects, etc.

[0004] However, the conventional horizontally arranged bridge bearing system restricts the pier structural type. Usually, it is necessary to ensure that the pier supporting the bearing structure surface is horizontal. To meet the force requirements of this bridge bearing system, the pier structural types are often stereotyped, either with a single structure or complex and heavy, without much aesthetic appeal. Summary of the Invention

[0005] In view of the above problems, a bridge bearing system arranged obliquely with reasonable layout, beautiful bridge type, and harmonious landscape is provided.

[0006] The specific technical solutions are as follows:

[0007] A bridge bearing system arranged obliquely includes a main beam, a buried steel plate, a bearing, a bearing padstone, and a pier. The bearing padstone is installed on the pier and has the following characteristics: the pier is arranged obliquely, and a beam bottom wedge block is integrally cast at the bottom of the main beam. The buried steel plate is partially cast on the beam bottom wedge block, and the buried steel plate is fastened to the upper bearing steel plate in the bearing through a first fastener. The lower bearing steel plate in the bearing is fastened to the bearing padstone through a second fastener.

[0008] The above-mentioned bridge bearing system arranged obliquely further has the following characteristics: the bearing system further includes a fall prevention beam stop block, which is integrally cast on the main beam and can abut against the pier.

[0009] The above-mentioned bridge bearing system arranged obliquely further has the following characteristics. The first fastener includes an upper anchor rod, an upper sleeve installed on the embedded steel plate, and an upper anchor bolt that can be screwed onto the upper anchor rod. The upper anchor rod and the upper sleeve are cast in the main beam, and the embedded steel plate is fastened to the upper bearing steel plate in the bearing through the upper anchor bolt.

[0010] The above-mentioned bridge bearing system arranged obliquely further has the following characteristics. The second fastener includes a lower anchor rod, a lower sleeve, and a lower anchor bolt that can be screwed onto the lower part of the lower anchor rod. The lower anchor rod and the lower sleeve are cast in the bearing padstone, and the lower bearing steel plate in the bearing is fastened to the bearing padstone through the lower anchor bolt.

[0011] The above-mentioned bridge bearing system arranged obliquely further has the following characteristics. The height of the embedded steel plate in the wedge block at the bottom of the beam accounts for 2 / 3 of the total thickness of the embedded steel plate.

[0012] The above-mentioned bridge bearing system arranged obliquely further has the following characteristics. The normal line at the bottom of the embedded steel plate, the normal line at the top of the bearing, the center line of the cross-section of the bearing padstone, and the center line of the cross-section of the bridge pier column are all parallel.

[0013] The above-mentioned bridge bearing system arranged obliquely further has the following characteristics. The included angle between the bridge pier and the horizontal plane is 15 - 30°.

[0014] The beneficial effects of the above solution are as follows:

[0015] 1) In the present invention, the conventional horizontally arranged bridge bearing system is changed to arrange the bridge piers symmetrically and obliquely, and the bridge bearing system is correspondingly optimized to obtain a bridge bearing system with novel shape, reasonable layout, beautiful bridge type, and harmonious landscape.

[0016] 2) In the bridge bearing system provided by the present invention, since the upper load acts vertically on the top of the bridge pier through the bearing, only axial force is generated in the bridge pier under the action of symmetric load. Even when the bearing arranged symmetrically and obliquely under non-uniform force can self-balance most of the tangential forces, thus avoiding excessive shear force and bending moment on the bridge pier, so that the bridge bearing system provided by the present invention has the advantages of strong structural adaptability and self-balancing of dynamic force.

[0017] 3) The bridge bearing system provided by the present invention saves the consumption of concrete and steel bars by canceling the capping beam, and at the same time makes the connection between the beam body, the bearing, and the bridge pier more natural and smooth. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the fixed structure of the bearing and the bridge pier in the bridge bearing system provided by the present invention;

[0019] Figure 2Schematic diagram of the installation of the bridge bearing system provided in the embodiment

[0020] In the attached drawings: 1, main beam; 2, embedded steel plate; 3, bearing; 4, bearing padstone; 5, bridge pier; 6, wedge block at the bottom of the beam; 7a, upper anchor rod; 8a, upper sleeve; 9a, upper anchor bolt; 7b, lower anchor rod; 8b, lower sleeve; 9b, lower anchor bolt; 10, grouting hole; 11, reserved hole; 12, epoxy resin mortar; 13, bolt; 14, anti-falling beam stop block. Specific implementation manners

[0021] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without making creative efforts belong to the scope of protection of the present invention.

[0022] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0023] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but it is not limited to the present invention.

[0024] As Figure 1 and Figure 2 shown, the bridge bearing system provided in the embodiment of the present invention includes a main beam 1, an embedded steel plate 2, a bearing 3, a bearing padstone 4 and a bridge pier 5. In the present invention, the bridge pier 5 is inclined (in the present invention, the included angle between the bridge pier 5 and the horizontal plane is preferably 15 - 30°, which can prevent the extreme phenomenon of beam falling and avoid the inconvenience of installing the bearing 3 due to too small an included angle), and a wedge block 6 at the bottom of the beam is integrally cast at the bottom of the main beam 1 (for ensuring that the lower bottom surface of the main beam 1 is parallel to the top of the bearing 3, and its inclination slope is the same as the inclination angle of the bearing 3, and the concrete grade is above C45). In the present invention, a part of the embedded steel plate 2 is cast on the wedge block 6 at the bottom of the beam (in the present invention, the height of the embedded steel plate 2 in the wedge block 6 at the bottom of the beam accounts for 2 / 3 of the total thickness of the embedded steel plate 2), the embedded steel plate 2 is fastened to the upper steel plate of the bearing 3 in the bearing 3 through a first fastener, and the lower steel plate of the bearing 3 in the bearing 3 is fastened to the bearing padstone 4 through a second fastener.

[0025] In the present invention, the normal line at the bottom of the embedded steel plate 2, the normal line at the top of the bearing 3, the center line of the cross-section of the bearing pad stone 4, and the center line of the pier column cross-section of the pier 5 are all parallel. In this way, the force transmitted by the bearing 3 to the pier 5 will be parallel to the center line of the pier column cross-section. This enables the pier 5 to be only subjected to axial force under the action of symmetric loads. Even when the bearings 3 arranged in a laterally symmetric inclined manner under non-uniform loading can self-balance most of the tangential forces, thus avoiding excessive shear force and bending moment on the pier 5, and making the bridge bearing system provided by the present invention have the advantages of strong structural adaptability and self-balancing of dynamic forces. It should be noted that in order to ensure that the center line of the cross-section of the pier 5 is perpendicular to the bearing 3, the top surface of the pier 5 in the present invention is also inclined, and its inclination angle is the same as that of the bearing 3.

[0026] In the present invention, the symmetric inclined arrangement of the bearings 3 enables a lateral horizontal force to be generated on the cross beam of the main girder 1, thereby generating a tensioned lateral prestressed tendon on the cross beam of the main girder 1 to resist the lateral force.

[0027] In the present invention, the size of the embedded steel plate 2 is larger than the size of the bearing steel plate on the bearing 3, so as to facilitate the jacking operation when replacing the bearing 3.

[0028] In the present invention, the first fastener includes an upper anchor rod 7a, an upper sleeve 8a installed on the embedded steel plate 2, and an upper anchor bolt 9a that can be screwed onto the upper anchor rod 7a. The upper anchor rod 7a and the upper sleeve 8a are cast on the main girder, and the embedded steel plate 2 is fastened to the upper bearing steel plate in the bearing 3 through the upper anchor bolt 9a.

[0029] In the present invention, the second fastener includes a lower anchor rod 7b, a lower sleeve 8b, and a lower anchor bolt 9b that can be screwed onto the lower anchor rod 7b. The lower anchor rod 7b and the lower sleeve 8b are cast on the bearing pad stone, and the lower bearing steel plate in the bearing 3 is fastened to the bearing pad stone 4 through the lower anchor bolt 9b.

[0030] It should be noted that in the present invention, in order to ensure the construction accuracy, before fixedly installing the bearing 3 and the bearing pad stone 4, it is necessary to use a level to check whether the elevations of the four corners of the bearing pad stone 4 meet the design requirements. If they meet the design requirements, the bearing 3 can be first positioned on the bearing pad stone 4, and then epoxy resin mortar 12 is injected into the reserved holes 11 located on the bearing pad stone 4 and the pier 5 through the grouting hole 10 by the pressure grouting method, so that the epoxy resin mortar 12 fully fills the reserved holes 11 and overflows about 10 mm above the upper surface of the bearing pad stone 4. Then, the angle of the bearing 3 is finely adjusted through the bolt 13, and then the lower anchor bolt 9b is tightened to complete the fixation of the bearing 3.

[0031] On the basis of the above technical solution, further, the bearing system provided in this embodiment further includes a falling prevention beam stopper 14. In the present invention, the falling prevention beam stopper 14 is integrally cast on the main beam 1, and the falling prevention beam stopper 14 can abut against the bridge pier 5 to prevent the extreme situation of the beam falling.

[0032] The above are only preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention accordingly. For those skilled in the art, it should be able to realize that the solutions obtained by equivalent substitution and obvious changes made by using the specification and illustrated content of the present invention should all be included in the protection scope of the present invention.

Claims

1. An inclined bridge bearing system, comprising a main beam, a pre-embedded steel plate, a bearing, a bearing padstone and a bridge pier, wherein the bearing padstone is installed on the bridge pier, and is characterized in that, The pier is symmetrically inclined, and a beam bottom wedge block and a falling prevention beam stop block are integrally cast at the bottom of the main beam. The embedded steel plate is partially cast on the beam bottom wedge block. The embedded steel plate is fastened to the upper bearing steel plate in the bearing through a first fastener. The lower bearing steel plate in the bearing is fastened to the bearing padstone through a second fastener. The normal line at the bottom of the embedded steel plate, the normal line at the top of the bearing, the center line of the cross-section of the bearing padstone, and the center line of the cross-section of the pier column are all parallel. The included angle between the pier and the horizontal plane is 15 - 30°. The top surface of the pier is inclined, and the inclination angle of the top surface of the pier is the same as the inclination angle of the bearing. The falling prevention beam stop block can abut against the inner side of the pier.

2. The inclined bridge bearing system according to claim 1, wherein The first fastener includes an upper anchor rod, an upper sleeve installed on the embedded steel plate, and an upper anchor bolt that can be screwed onto the upper anchor rod. The upper anchor rod and the upper sleeve are cast on the main beam. The embedded steel plate is fastened to the upper bearing steel plate in the bearing through the upper anchor bolt.

3. The inclined bridge bearing system according to claim 1, wherein The second fastener includes a lower anchor rod, a lower sleeve, and a lower anchor bolt that can be screwed onto the lower anchor rod. The lower anchor rod and the lower sleeve are cast on the bearing padstone. The lower bearing steel plate in the bearing is fastened to the bearing padstone through the lower anchor bolt.

4. The inclined bridge bearing system according to claim 1, characterized in that, The height of the embedded steel plate in the beam bottom wedge block accounts for 2 / 3 of the total thickness of the embedded steel plate.

Images