Device for transmitting horizontal force of pier

Abstract

The invention provides a device for transmitting horizontal force of a bridge pier, and belongs to the technical field of bridge engineering. The anchoring structure is composed of an anchor box, a steel anchor seat and an anchorage device, the device is composed of the anchoring structure and used for transmitting the horizontal force of the pier, the anchorage device moving along a track is arranged in the anchor box, one end of a prestress inhaul cable is connected with the anchorage device, one end of a guide rod is welded to the anchorage device, and the other end of the guide rod is reserved on the outer side of the anchor box and fixed through a nut. The braking piers are arranged at the two ends of the bridge, the excellent characteristics of the braking piers are fully utilized, horizontal force is transmitted to the braking piers, the burden of the flexible bridge pier can be reduced, and therefore the overall safety performance of the bridge is improved; the flexible bridge pier can better bear horizontal force generated during braking of the large mine car, the bearing capacity is enhanced, and the service life of the bridge is prolonged; the flexible bridge pier can be designed more flexibly, and the bridge design is optimized; ground anchors are not needed, construction cost is reduced, and construction progress is accelerated.

Description

Technical Field

[0001] The invention belongs to the technical field of bridge engineering, and in particular relates to a device for transmitting horizontal force of a bridge pier. Background Art

[0002] With the advancement of science and technology and the need to improve mining production efficiency, the design and manufacture of mine cars are also constantly developing towards large-scale. The use of large-scale mine cars can improve the production efficiency of mines and reduce operating costs, but it also puts higher requirements on the maintenance and management of equipment. At present, in order to meet the growing demand for transportation efficiency and carrying capacity in mining areas, the axle weight of mine cars used in mining areas is gradually increasing.

[0003] In beam bridges, the horizontal force of bridge piers is mainly caused by temperature changes, concrete shrinkage, vehicle braking, etc. Under the action of moving loads in the operation stage of mining area bridges, a large braking force will be generated, resulting in excessive horizontal displacement of bridge piers. In existing bridge structures, flexible piers are usually used to bear the vertical load of the bridge, but due to the structural characteristics of flexible piers, their ability to bear horizontal forces is relatively weak. When large mine cars pass through the bridge, the braking force of the mine cars will generate a large horizontal force on the flexible piers, which can easily lead to the destruction of the flexible piers and affect the safety performance of the bridge. Summary of the invention

[0004] In view of the above shortcomings, the purpose of the present invention is to provide a device for transmitting horizontal force on bridge piers. This structure can transmit the horizontal force generated on the flexible piers when a large mining car is braked to the braking piers through prestressed cables, effectively solving the problem of insufficient horizontal force bearing capacity of flexible bridge piers.

[0005] The technical solution adopted by the invention is: an anchoring structure, the technical key points of which are: it includes an anchor box, a steel anchor seat and an anchor, the steel anchor seats are arranged on both sides of the anchor box, an anchor moving along the track is arranged inside the anchor box, one end of the prestressed cable passes through the side wall of the anchor box and passes out of the anchor, and its passing part is fixed by a nut; one end of the guide rod enters the anchor box through the guide rod hole on the other side wall of the anchor box and is welded to the anchor, and the other end of the guide rod remaining on the outside of the anchor box is fixed by a nut, and the anchor slides along the track driven by the guide rod to adjust the tension of the prestressed cable.

[0006] Furthermore, the steel anchor seat is provided with bolt holes for connecting with the embedded bolts on the cap beam.

[0007] A device for transmitting horizontal force of bridge piers, the technical key point of which is that it is composed of the above-mentioned anchoring structures. The free end of the prestressed cable of one anchoring structure passes through the through hole of another anchoring structure and then passes through the anchor of the other anchoring structure and is fixed by a nut. The two anchoring structures can be connected to form a transmission unit. Multiple such transmission units constitute the device for transmitting horizontal force of bridge piers.

[0008] A bridge containing a device for transmitting horizontal force on piers, the technical key points of which are that it includes brake piers arranged at the left and right ends of the bridge, flexible piers are connected between the brake piers, and a transmission unit in the device for transmitting horizontal force on the piers is respectively installed on the cap beams on the top of the brake piers and the flexible piers, or is respectively installed on the cap beams on the top of adjacent flexible piers.

[0009] Furthermore, the two sections on the left and rear sides of the bridge are not respectively provided with two brake piers, and the two brake piers are supported by a diagonal brace, and the diagonal brace is diagonally connected from the top of one brake pier to the bottom of the adjacent brake pier.

[0010] The beneficial effects of the present invention are as follows: the device for transmitting the horizontal force of the bridge pier includes an anchoring structure composed of an anchor box, a steel anchor seat and an anchor, and a device for transmitting the horizontal force of the bridge pier composed of the anchoring structure. An anchor moving along the track is arranged inside the anchor box, one end of the prestressed cable is connected to the anchor, one end of the guide rod is welded to the anchor, and the other end is left outside the anchor box and fixed by a nut. The flexible bridge pier can better withstand the horizontal force generated by the braking of a large mining car, enhance the bearing capacity, and increase the service life of the bridge; in addition, brake piers are also arranged at both ends of the bridge of the present application, which fully utilize the excellent characteristics of the brake piers. By transmitting the horizontal force to the brake piers, the burden of the flexible bridge piers can be reduced, thereby improving the overall safety performance of the bridge; it can be more flexible in designing the flexible bridge piers and optimize the bridge design; there is no need to set ground anchors, which reduces the project cost and speeds up the project progress. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0012] Figure 1 A schematic diagram of the anchoring structure in Example 1 of the present invention; Figure 2 An overall diagram of a device for transmitting horizontal force of a bridge pier in Embodiment 2 of the present invention; Figure 3 A schematic diagram of the installation of a device for transmitting horizontal force of a bridge pier in Embodiment 2 of the present invention; Figure 4 Layout diagram of the diagonal braces in Example 2 of the present invention; Explanation of the reference numerals: 1. Prestressed cable; 2. Anchoring structure; 201. Steel anchor seat; 202. Anchor; 203. Guide rod; 204. Nut; 205 Anchor box; 3. Embedded bolt; 4. Diagonal brace; 5. Braking pier; 6. Flexible pier; 7 Cap beam. DETAILED DESCRIPTION

[0013] To make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the following is a brief description of the present invention in conjunction with the attached Figure 1-Figure 4 The present invention is further described in detail with reference to the accompanying drawings and specific embodiments. Embodiment 1:

[0014] The anchoring structure 2 of this embodiment includes an anchor box 205, and a steel anchor seat 201 is arranged on both sides of the anchor box 205, and is connected with bolt holes for connecting with the embedded bolts on the cap beam to fix the anchor box 205 on the cap beam. A movable anchor 202 is arranged inside the anchor box 205, and the anchor 202 can move along the tracks arranged up and down in the anchor box 205. One end of the prestressed cable 1 is inserted into the connecting hole of the side wall of the anchor box 205 and then passes through the anchor 202, and the passing part is fixed by a nut. The prestressed cable 1 of this embodiment is made of finely rolled threaded steel or steel strand, and a special tensioning jack is used for tensioning. One end of the guide rod 203 enters the anchor box through the guide rod hole on the other side wall of the anchor box 205 and is welded to the anchor 202. This embodiment uses two guide rods, and the welding points of the two guide rods and the anchor 202 are located on the upper and lower sides of the prestressed cable 1. The part of the guide rod 203 left outside the anchor box 205 is fixed by the nut 204. The guide rod 203 and the prestressed cable are respectively provided with external threads that match the nut 204. Pulling the guide rod 203 drives the anchor 202 to move to adjust the prestressed and tensioned state of the prestressed cable 1. After adjustment, the position is fixed by the nut 204. Embodiment 2:

[0015] The device for transmitting the horizontal force of the bridge pier of this embodiment includes the anchoring structure 2 described in the embodiment 1, and is composed of a plurality of anchoring structures 2 connected by prestressed cables 1. The free end of the prestressed cable 1 of one anchoring structure passes through the through hole of another anchoring structure, and then passes through the anchor of the other anchoring structure and is fixed by a nut, so that the two anchoring structures can be connected to form a transmission unit, and a plurality of such transmission units constitute the device for transmitting the horizontal force of the bridge pier. Embodiment 3:

[0016] A bridge in this embodiment includes a brake pier 5, a flexible pier 6 and a device for transmitting the horizontal force of the pier. Two brake piers 5 are respectively provided at the left and right ends of the bridge body. The brake piers 5 play the role of limiting the lateral displacement of the bridge and transmitting the longitudinal load. They usually have a high rigidity and are used to resist the lateral force and braking force. In this embodiment, the two brake piers 5 are connected by a diagonal brace 4. The diagonal brace 4 is made of steel or anti-buckling restraint rods. The diagonal brace 4 is diagonally connected from the top of one brake pier 5 to the bottom of the adjacent brake pier 5, which can transfer part of the load borne by the pier to the adjacent pier platform, thereby dispersing the load of a single pier and improving the overall bearing capacity and durability of the bridge. A plurality of flexible piers 6 are connected between the brake piers 5. The device for transmitting the horizontal force of the pier is bolted to the cap beam 7 on the top of the brake pier 5 and the flexible pier 6 through embedded bolts 3, and the cap beam 7 is connected to the main beam through the support located above it.

[0017] The connection for transmitting horizontal force in this embodiment is as follows: a first anchoring structure 2 is installed on the brake pier 5, and a second anchoring structure and a third anchoring structure are installed on the top of the first flexible pier 6 adjacent to the brake pier 5. The free end of the prestressed cable 1 of the first anchoring structure passes through the through hole of the second anchoring structure, is passed through the anchor of the second anchoring structure and is fixed by a nut. In the same way, the third anchoring structure is connected to the fourth anchoring structure located on the top of the second flexible pier 6, until the last anchoring structure located on the top of the last brake pier is fully connected. Pull the guide rod 203 on the first anchoring structure, and tension the prestressed cable 1 in stages from one end of the brake pier 5 to the other end in sequence. When the pretension in the prestressed cable 1 reaches the design requirement, the tensioning is stopped and fixed by the nut 204. In this embodiment, the two anchoring structures 2 on the same flexible pier of the anchoring structure can be arranged up and down, or side by side, and adjusted according to the span of the bridge.

[0018] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art who is familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. An anchoring structure, characterized in that: It includes an anchor box, a steel anchor seat and an anchor. The steel anchor seats are arranged on both sides of the anchor box. Anchors that move along the track are arranged inside the anchor box. One end of the prestressed cable passes through the side wall of the anchor box and comes out of the anchor, and the passing part is fixed by a nut; one end of the guide rod enters the anchor box through the guide rod hole on the other side wall of the anchor box and is welded to the anchor, and the other end of the guide rod remaining on the outside of the anchor box is fixed by a nut. The anchor slides along the track driven by the guide rod to adjust the tension of the prestressed cable.

2. The anchoring structure according to claim 1, characterized in that: The steel anchor seat is provided with bolt holes for connecting with the embedded bolts on the cap beam.

3. A device for transmitting horizontal force of a bridge pier, characterized in that: The anchoring structures described in claim 1 are connected to form a transmission unit, wherein the free end of the prestressed cable of one anchoring structure passes through the through hole of another anchoring structure and then passes through the anchor of the other anchoring structure and is fixed by a nut, so that the two anchoring structures can be connected to form a transmission unit, and a plurality of such transmission units constitute a device for transmitting the horizontal force of the bridge pier.

4. A bridge having a device for transmitting horizontal forces on piers, characterized in that , including brake piers arranged at the left and right ends of the bridge, flexible piers connected between the brake piers, and also including the device for transmitting the horizontal force of the piers as described in claim 3, a transmission unit in the device for transmitting the horizontal force of the piers is respectively installed on the cap beams on the top of the brake pier and the flexible pier, or respectively installed on the cap beams on the top of adjacent flexible piers.

5. The bridge having a device for transmitting horizontal forces on piers as claimed in claim 4, characterized in that: The left and rear sections of the bridge are not provided with two brake piers respectively, and the two brake piers are supported by diagonal braces, which are diagonally connected from the top of one brake pier to the bottom of the adjacent brake pier.

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