A new type of counter-force frame structure suitable for bridge beam end counter-tension

Abstract

The utility model provides a kind of novel counterforce frame structure suitable for bridge beam end counter tension, including fixed frame, counterforce frame, tension rod, main beam lug, anchor cup, jack and boom cable;The fork lug of the main beam lug, boom cable is installed in the hinged portion of fixed frame by hinged axle;The fixed frame is inverted triangular support, boom cable is set through the middle part of fixed frame, and the end of two tension rods is symmetrically fixed on the two sides of boom cable based on fixed frame;Boom cable is installed through anchor cup and passes on counterforce frame, and the counterforce frame is the symmetrical structure based on boom cable as center;One jack is installed at the symmetrical position of the two sides of boom cable based on counterforce frame, and two tension rods pass through counterforce frame and are pulled by jack to provide tension force.The structure has the advantages of smaller positioning angle deviation and more uniform stress distribution.

Description

Technical Field

[0001] This utility model relates to the field of bridge engineering technology, specifically to a novel reaction frame structure suitable for anti-tensioning at the ends of bridge beams. Background Technology

[0002] In bridge engineering, the development of elevated forms of urban bridges is increasing, and the overall construction of bridges is also moving towards prefabricated structures. Among them, urban expressway elevated bridges and highway elevated bridges all require prestressed construction and anti-tensioning methods for the construction of cap beams, continuous beams, precast beams, No. 0 blocks, suspension methods, etc. This construction method often requires the use of reaction frame structures to provide strong tension.

[0003] During the tensioning process, the deviation of the tensioning angle needs to be considered. Typical anti-tensioning structures are often equipped with a set of jacks, which are prone to deviation during the positioning angle process, thus affecting the force distribution and causing uneven force distribution.

[0004] To control angular deviations and make the force distribution more uniform, a new reaction frame structure needs to be developed to solve the above problems. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by providing a novel reaction frame structure suitable for anti-tensioning at the ends of bridge beams, characterized by smaller positioning angle deviation and more uniform force distribution.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is: a novel reaction frame structure suitable for counter-tensioning at the ends of bridge beams, comprising a fixed frame, a reaction frame, a tension rod, a main beam lifting lug, an anchor cup, a jack, and a suspension cable;

[0007] The main beam lifting lugs and the fork lugs of the lifting rod cables are installed on the hinge part of the fixed frame through hinge shafts;

[0008] The fixing frame is an inverted triangular support, the suspension cable passes through the middle of the fixing frame, and one end of the two tension rods is symmetrically fixed to the two sides of the fixing frame based on the suspension cable;

[0009] The boom cable is installed via anchor cups and passes through the reaction frame, which is a symmetrical structure centered on the boom cable.

[0010] The reaction frame is based on a jack installed at a symmetrical position on both sides of the suspension cable. Two tension rods pass through the reaction frame and are provided with tension by the jacks.

[0011] Preferably, the fixing frame includes two independent and symmetrically distributed steel sections, the lower end of the steel sections is provided with a semi-circular hinge part, the upper end of the steel sections extends outward to form a wing plate part, and the two steel sections are connected and fixed together by a connecting rod.

[0012] Preferably, the wing plate includes an upper wing plate, a lower wing plate, and two vertical ribs. The upper wing plate, the lower wing plate, and the two vertical ribs together form a rectangular cavity. The bottom end of the tension rod passes through the upper wing plate and the lower wing plate and is fastened to the lower wing plate by bolts.

[0013] Preferably, the reaction frame is a frame structure, and several vertical ribs are provided on the outer peripheral surface of the reaction frame.

[0014] Preferably, the jack is a tensioning jack.

[0015] Preferably, the main body of the anchor cup is located at the lower end of the reaction frame.

[0016] Preferably, an anchoring ring is provided at the connection point of the boom cable fork lug to the boom cable.

[0017] Preferably, the upper end of the anchor cup extends beyond the reaction frame.

[0018] Preferably, circular baffles are provided at both ends of the hinge shaft.

[0019] Preferably, the two tension rods are of equal length.

[0020] This utility model has substantial features and progress compared to the prior art. Specifically, this utility model uses a symmetrical design for components such as the fixing frame, reaction frame, tension rod, and jack to make the entire reaction frame structure stable in terms of force. Due to the symmetrical distribution of each structure, the displacement during the tensioning process is more stable, the problem of positioning deviation is eliminated to the greatest extent, and the force on the entire reaction frame is more balanced. Attached Figure Description

[0021] Figure 1 This is a structural schematic diagram of a novel reaction frame structure applicable to anti-tensioning at the ends of bridge beams, as described in this utility model.

[0022] In the diagram: 1. Fixed frame; 2. Reaction frame; 3. Tensioning rod; 4. Main beam lifting lug; 5. Anchor cup; 6. Jack; 7. Lifting cable; 8. Fork lug; 9. Hinge shaft; 10. Anchor ring; 11. Hinge part; 12. Wing plate part; 13. Connecting rod; 121. Upper wing plate; 122. Lower wing plate; 123. Vertical reinforcement. Detailed Implementation

[0023] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0024] like Figure 1 As shown, a novel reaction frame structure suitable for counter-tensioning at the ends of bridge beams includes a fixed frame 1, a reaction frame 2, a tension rod 3, a main beam lifting lug 4, an anchor cup 5, a jack 6, and a suspender cable 7.

[0025] The main beam lifting lug 4 and the fork lug 8 of the lifting rod cable 7 are installed on the hinge part of the fixed frame 1 through the hinge shaft 9, and the two ends of the hinge shaft 9 are provided with circular baffles.

[0026] In this embodiment, the inverted triangular support of the fixed frame 1 includes two independent and symmetrically distributed steel sections. The lower end of the steel section is provided with a semi-circular hinge part 11, and the upper end of the steel section extends outward to form a wing plate part 12. The two steel sections are connected and fixed together by a connecting rod 13 to form a stable structure. The hinge part 11 is located in the center of the fixed frame 1. The hinge connection relationship between the hinge part 11, the fork lug 8 and the main beam lifting lug 4 also ensures the stable relationship between the fixed frame 1 and the lifting cable 7, which is always located in the center of the fixed frame 1.

[0027] The suspending cable 7 passes through the middle of the fixing frame 1 and extends upward. It is installed through the anchor cup 5 and passes through the reaction frame 2. The main body of the anchor cup 5 is located at the lower end of the reaction frame, and the upper end of the anchor cup 5 extends beyond the reaction frame 2. An anchoring ring 10 is provided at the connection point of the suspending cable 7 to the suspending cable for locking the suspending cable.

[0028] The reaction frame 2 is a symmetrical structure centered on the suspender cable.

[0029] Two tension rods 3 are symmetrically fixed at one end to the fixed frame 1 based on both sides of the suspender cable 7, and the other end passes through the reaction frame 2. The reaction frame 2 is equipped with a jack 6 at a symmetrical position on both sides of the suspender cable 7. The two tension rods 3 pass through the reaction frame 2 and are pulled by the jack 6 to provide tension. In this embodiment, the jack 6 is a tensioning jack, which is a jack specifically used for bridge reaction construction. The two tension rods 3 are of equal length to ensure a balanced force distribution.

[0030] In the fixing method of the tension rod 3, the wing plate part 12 includes an upper wing plate 121, a lower wing plate 122, and two vertical ribs 123. The upper wing plate 121, the lower wing plate 122, and the two vertical ribs 123 together form a rectangular cavity. The bottom end of the tension rod 3 passes through the upper wing plate 121 and the lower wing plate 122 and is fastened to the lower wing plate by bolts. Figure 1 The bolts are not shown due to the obstruction of the vertical ribs 123.

[0031] The reaction frame 2 is a frame structure, and several vertical ribs are provided on the outer circumference of the reaction frame 2 to maintain the stability of the reaction frame 2.

[0032] When using this device, first install the fixing frame, connect the fixing frame 1, the fork lug of the suspender cable and the main beam suspender lug together, and then install the reaction frame.

[0033] After the reaction frame is installed, operate the jacks and tension rods to tension it appropriately so that it can be operated manually.

[0034] After adjustment, the jacks are operated manually to control the tension provided by the combination of the fixed frame, reaction frame and jacks. During this process, due to the symmetrical structure, the angle deviation is small and the force distribution is balanced, which meets the construction requirements.

[0035] Finally, it should be noted that: the preferred embodiments of this patent have been described in detail above, but this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A new type of reaction frame structure suitable for bridge end back tensioning, characterized in that: Includes fixed frame, reaction frame, tension rod, main beam lifting lug, anchor cup, jack and lifting cable; The main beam lifting lugs and the fork lugs of the lifting rod cables are installed on the hinge part of the fixed frame through hinge shafts; The fixing frame is an inverted triangular support, the suspension cable passes through the middle of the fixing frame, and one end of the two tension rods is symmetrically fixed to the two sides of the fixing frame based on the suspension cable; The boom cable is installed via anchor cups and passes through the reaction frame, which is a symmetrical structure centered on the boom cable. The reaction frame is based on a jack installed at a symmetrical position on both sides of the suspension cable. Two tension rods pass through the reaction frame and are provided with tension by the jacks.

2. The new reaction frame structure suitable for bridge end counter-tension according to claim 1, characterized in that: The fixing frame includes two independent and symmetrically distributed steel sections. The lower end of the steel section is provided with a semi-circular hinge, and the upper end of the steel section extends outward to form a wing plate. The two steel sections are connected and fixed together by a connecting rod.

3. The new reaction frame structure suitable for bridge end counter-tension according to claim 2, characterized in that: The wing plate includes an upper wing plate, a lower wing plate, and two vertical ribs. The upper wing plate, the lower wing plate, and the two vertical ribs together form a rectangular cavity. The bottom end of the tension rod passes through the upper wing plate and the lower wing plate and is fastened to the lower wing plate by bolts.

4. The new reaction frame structure suitable for bridge end counter-tension according to claim 3, characterized in that: The reaction frame is a frame structure, and several vertical ribs are provided on the outer circumference of the reaction frame.

5. The new reaction frame structure suitable for bridge end counter-tension according to claim 4, characterized in that: The jack mentioned is a tensioning jack.

6. The new reaction frame structure suitable for bridge end counter-tension according to claim 5, characterized in that: The main body of the anchor cup is located at the lower end of the reaction frame.

7. The new reaction frame structure suitable for bridge end counter-tension according to claim 6, characterized in that: An anchoring ring is provided at the connection point of the boom cable to the boom cable.

8. The new reaction frame structure suitable for bridge end counter-tension according to claim 7, characterized in that: The upper end of the anchor cup extends beyond the reaction frame.

9. The new reaction frame structure suitable for bridge end counter-tension according to claim 8, characterized in that: Circular baffles are provided at both ends of the hinge shaft.

10. The new reaction frame structure suitable for bridge end counter-tension according to claim 9, characterized in that: The two tension rods are of equal length.

Images