No.0 block bracket pre-pressing device

Abstract

The utility model relates to the technical field of bridge construction, in particular to a No.0 block bracket prepressing device which comprises a reaction frame, a first pressure applying rod, a second pressure applying rod and a jack. The counter-force frame is fixedly arranged at the top of the pier, and one end of the counter-force frame extends out of the edge of the pier; the first pressing rods are horizontally pressed on the top of the bracket and are perpendicular to the bracket. The first pressing rods are arranged at the two ends of the top of the bracket. The second pressing rod and the first pressing rod are orthogonally arranged, and the two ends of the second pressing rod are pressed on the first pressing rods at the two ends of the top of the bracket respectively; the jack is arranged at the top of the second pressure applying rod, and the top of the jack abuts against the end, extending out of the pier, of the counter-force frame. The device has the advantages that the counter-force frame is fixedly arranged at the top of the pier, the end, extending out of the pier, of the counter-force frame serves as a fulcrum to apply pressure to the bracket, cost is low, and construction is convenient and fast.

Description

TECHNICAL FIELD

[0001] The utility model relates to bridge construction technical field, especially a 0 block bracket preloading device. BACKGROUND

[0002] 0 block bracket preloading usually adopts sandbag loading preloading method or tension steel strand preloading method, and the sandbag preloading method can simulate the load distribution of 0 block construction more truly, but in the case that the bridge pier is higher, the construction cost is higher, and the loading time is longer, and the tension steel strand preloading method also has the problem of inconvenient construction in the case that the bridge pier is higher. UTILITY MODEL CONTENTS

[0003] The utility model discloses a 0 block bracket preloading device.

[0004] The utility model discloses a 0 block bracket preloading device, including counterforce frame, first pressure rod, second pressure rod and jack,

[0005] The counterforce frame is fixedly arranged at the top of the bridge pier, and one end of the counterforce frame extends out of the edge of the bridge pier.

[0006] The first pressure rod is horizontally arranged at the top of the bracket and is perpendicular to the bracket, and the first pressure rod is arranged at both ends of the top of the bracket.

[0007] The second pressure rod is arranged orthogonally to the first pressure rod, and both ends of the second pressure rod are arranged on the first pressure rod at both ends of the top of the bracket.

[0008] The jack is arranged at the top of the second pressure rod, and the top of the jack abuts against one end of the counterforce frame extending out of the bridge pier.

[0009] In the utility model, the bracket is prepressed by the counterforce frame, the counterforce frame is fixedly connected with the bridge pier after being assembled, and then the bracket is prepressed.

[0010] In some embodiments, the first pressure rod and the second pressure rod both comprise double-spliced I-beams. The double-spliced I-beams have high strength and meet the prepressing requirements of the bracket.

[0011] In some embodiments, the counterforce frame comprises an upper horizontal main beam, a lower horizontal main beam, a vertical support beam and an inclined support beam, the vertical support beam and the inclined support beam are both arranged between the upper horizontal main beam and the lower horizontal main beam, and one end of the lower horizontal main beam extends out of the bridge pier and abuts against the jack. The upper horizontal main beam, the lower horizontal main beam, the vertical support beam and the inclined support beam jointly form the counterforce frame.

[0012] In some embodiments, the diagonal support beams and the vertical support beams form several triangular structures between the upper horizontal main beam and the lower horizontal main beam. The triangular structures formed by the diagonal support beams and the vertical support beams improve the strength of the counterforce frame.

[0013] In some embodiments, the counterforce frame is anchored to the top of the pier by anchor rods. Since one end of the counterforce frame abuts against the bracket by the jack, the end of the counterforce frame extending out of the pier is subjected to an upward force. By anchoring the counterforce frame to the pier, the counterforce frame is prevented from being separated from the pier upwardly during the pre-pressing process.

[0014] In some embodiments, the anchor rods are vertically arranged, the bottom ends of the anchor rods are pre-buried at the edge positions of the top of the pier, and the top ends of the anchor rods are connected to the upper horizontal main beam. By arranging the anchor rods at positions close to the edge of the pier, the anchor rods are close to the abutting position of the jack, the force arm is shortened, and the bending moment received by the counterforce frame is reduced.

[0015] In some embodiments, a plurality of force-bearing beams are arranged between the lower horizontal main beam and the top of the pier, and the force-bearing beams are arranged orthogonally to the lower horizontal main beam. By the force-bearing beams, the force received by the counterforce frame is dispersed and transmitted to the pier.

[0016] In some embodiments, the upper horizontal main beam and the lower horizontal main beam each comprise a double-spliced I-beam.

[0017] In some embodiments, the lower horizontal main beam is provided with a reinforcing rib plate at a position abutting against the jack. The position of the lower horizontal main beam abutting against the jack is subjected to a relatively large stress. By arranging the reinforcing rib plate, the deformation of the lower horizontal main beam under the relatively large stress is avoided.

[0018] The utility model has the following advantages:

[0019] The utility model discloses a counterforce frame, which is fixedly arranged at the top of the pier, and one end of the counterforce frame extends out of the pier. The end of the counterforce frame extending out of the pier is used as a fulcrum, and the bracket is pre-pressed by the jack. The counterforce frame is simple in structure. In construction, the counterforce frame is assembled first, and then the counterforce frame is anchored to the top of the pier. The construction is simple and convenient, and the cost is low. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 It is a mounting structure schematic view of the No. 0 block bracket pre-pressing device.

[0021] Figure 2 It is a mounting structure schematic view of the No. 0 block bracket pre-pressing device. Figure 1 It is an enlarged view of A in the middle.

[0022] In the figure: 1, counterforce frame; 11, lower horizontal main beam; 111, reinforcing rib plate; 12, upper horizontal main beam; 13, oblique support beam; 14, vertical support beam; 2, first pressing rod; 3, second pressing rod; 4, jack; 5, anchor rod; 6, force bearing beam; 7, cushion beam. DETAILED DESCRIPTION

[0023] In order to make the purpose of the utility model, the technical scheme and the advantages are clearer and more apparent, the utility model will be further described in detail below in combination with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the utility model and are not used to limit the utility model, that is, the described examples are only a part of the examples of the utility model, but not all the examples. The components of the utility model embodiments described and shown in the drawings herein can be arranged and designed in various different configurations.

[0024] The utility model will be further described below in combination with the drawings, but the protection scope of the utility model is not limited to the following.

[0025] As shown in Figure 1 and Figure 2 A No. 0 block bracket pre-pressing device, comprising a counterforce frame 1, a first pressing rod 2, a second pressing rod 3 and a jack 4;

[0026] The counterforce frame 1 is fixedly arranged at the top of the pier, and one end of the counterforce frame 1 extends out of the edge of the pier;

[0027] The first pressing rod 2 is horizontally arranged at the top of the bracket and is perpendicular to the bracket, and the top of the bracket is provided with the first pressing rod 2 at both ends;

[0028] Specifically, in the embodiment, a plurality of brackets are arranged at the side of the pier, the first pressing rod 2 is arranged perpendicular to the direction of the bracket, one first pressing rod 2 is arranged on the plurality of brackets to simultaneously apply pressure to the plurality of brackets;

[0029] The second pressing rod 3 is arranged perpendicular to the first pressing rod 2, and the two ends of the second pressing rod 3 are arranged on the first pressing rods 2 at both ends of the top of the bracket;

[0030] The jack 4 is arranged at the top of the second pressing rod 3, and the top of the jack 4 abuts against one end of the counterforce frame 1 extending out of the pier.

[0031] Specifically, in the embodiment, one jack 4 is arranged corresponding to one counterforce frame 1, and one counterforce frame 1 needs to apply pressure to a plurality of first pressure rods 2, so that the second pressure rod 3 is arranged perpendicularly to the first pressure rod 2, and one second pressure rod 3 is arranged on the plurality of first pressure rods 2, the top end of the jack 4 abuts against the counterforce frame 1, the bottom end abuts against the second pressure rod 3, the second pressure rod 3 transmits pressure to the plurality of first pressure rods 2, and the first pressure rod 2 transmits pressure to the bracket, thereby completing pre-pressing of the bracket.

[0032] Preferably, the first pressure rod 2 and the second pressure rod 3 both comprise double-spliced I-beams. The double-spliced I-beam is a commonly used component for those skilled in the art, and its structure will not be described here. The double-spliced I-beam has high strength and is suitable for occasions with high load.

[0033] Specifically, in the embodiment, the pier column is provided with a bracket on both sides, and the top of the pier is provided with two pre-pressing devices. One end of the counterforce frame 1 is fixed to the top of the pier, and the other end extends out of the pier. The end of the counterforce frame 1 extending out of the pier is used as a fulcrum of the jack 4 to pre-press the bracket. The counterforce frame 1 is fixed and installed to the top of the pier after being assembled on site. The counterforce frame 1 has a simple structure and is convenient to assemble, which is convenient for construction on an ultra-high pier, and reduces construction cost.

[0034] Preferably, the counterforce frame 1 comprises an upper horizontal main beam 12, a lower horizontal main beam 11, a vertical support beam 14 and an inclined support beam 13. The vertical support beam 14 and the inclined support beam 13 are arranged between the upper horizontal main beam 12 and the lower horizontal main beam 11. One end of the lower horizontal main beam 11 extends out of the pier and abuts against the jack 4.

[0035] Preferably, the inclined support beam 13 and the vertical support beam 14 form a plurality of triangular structures between the upper horizontal main beam 12 and the lower horizontal main beam 11.

[0036] Specifically, in the embodiment, the inclined support beam 13 and the vertical support beam 14 form a plurality of triangular structures with the upper horizontal main beam 12 and the lower horizontal main beam 11, so that the overall structure of the counterforce frame 1 is strong, and the jack 4 is provided with a stable support point.

[0037] Preferably, the counterforce frame 1 is connected to the top of the pier by an anchor rod 5. Specifically, in the embodiment, the top of the upper main beam is provided with a cushion beam 7. In the embodiment, the anchor rod 5 comprises a finished rolled threaded steel, and a finished rolled nut is arranged at the top of the finished rolled threaded steel. The finished rolled nut abuts against the cushion beam 7, and the cushion beam 7 abuts against the upper horizontal main beam 12, so that the counterforce frame 1 is arranged on the top of the pier.

[0038] Preferably, the anchor rod 5 is vertically arranged, the bottom end of the anchor rod 5 is embedded at the edge position of the top of the pier, and the top end of the anchor rod 5 is connected with the upper horizontal main beam 12. Specifically, in the embodiment, since the end of the reaction frame 1 extending out of the top of the pier is subjected to the upward force from the jack 4, the reaction frame 1 is not avoided from being separated from the top of the pier, the anchor rod 5 is used to anchor the reaction frame 1 to the top of the pier, in the embodiment, the anchor rod 5 is vertically arranged at the edge position of the top of the pier, the distance between the anchoring position of the reaction frame 1 and the jack 4 is shortened, the force arm is further shortened, the moment formed at the jack 4 is reduced, and finally the tension of the anchor rod 5 is reduced.

[0039] Preferably, a plurality of force bearing beams 6 are arranged between the lower horizontal main beam 11 and the top of the pier, and the force bearing beams 6 are arranged orthogonally to the lower horizontal main beam 11. Specifically, in the embodiment, two force bearing beams 6 are arranged under the reaction frame 1, one force bearing beam 6 is arranged at the end position of the end of the lower horizontal main beam 11 on the pier, and the other force bearing beam 6 is arranged at the position close to the anchor rod 5 at the bottom of the lower horizontal main beam, the force of the reaction frame 1 to the pier is dispersed to each part of the pier by arranging the force bearing beams 6.

[0040] Preferably, the upper horizontal main beam 12 and the lower horizontal main beam 11 each comprise a double I-beam. The upper horizontal main beam and the lower horizontal main beam 11 are subjected to large force, and the double I-beam has high strength, so that the reaction frame 1 is prevented from being deformed by force.

[0041] Preferably, a reinforcing rib plate 111 is arranged on the lower horizontal main beam 11 at the position abutting against the jack 4. Specifically, in the embodiment, the reinforcing rib plate 111 is also arranged at the position where the lower horizontal main beam 11 contacts with the force bearing beam 6, the structural strength of the main force position on the lower horizontal main beam 11 is improved by the reinforcing rib plate 111, and local deformation caused by excessive force is avoided.

[0042] The above description is only a preferred embodiment of the present application, and does not limit the present application in any form. Any person skilled in the art can make many possible changes and modifications to the technical solution of the present application, or modify it into equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Therefore, any modification, equivalent change and modification made to the above embodiment according to the technical solution of the present application, which does not depart from the technical solution of the present application, all belong to the protection scope of the present application.

Claims

1. A No. 0 block bracket preloading device, characterized in that: include: A reaction frame (1), wherein the reaction frame (1) is fixedly arranged on the top of the bridge pier, and one end of the reaction frame (1) extends beyond the edge of the bridge pier; A first pressure rod (2), the first pressure rod (2) is horizontally pressed on the top of the bracket and perpendicular to the bracket, and the first pressure rod (2) is provided at both ends of the top of the bracket; A second pressure rod (3), the second pressure rod (3) is arranged orthogonally to the first pressure rod (2), and the two ends of the second pressure rod (3) are respectively pressed on the first pressure rod (2) at the two ends of the top of the bracket; A jack (4) is provided on the top of the second pressure rod (3), and the top of the jack (4) abuts against one end of the reaction frame (1) extending out of the bridge pier.

2. A No. 0 block bracket preloading device according to claim 1, characterized in that: The first pressure rod (2) and the second pressure rod (3) both comprise double-jointed I-beams.

3. A No. 0 block bracket preloading device according to claim 1, characterized in that: The reaction frame (1) comprises an upper horizontal main beam (12), a lower horizontal main beam (11), a vertical support beam (14) and an oblique support beam (13); the vertical support beam (14) and the oblique support beam (13) are both arranged between the upper horizontal main beam (12) and the lower horizontal main beam (11); one end of the lower horizontal main beam (11) extends out of the bridge pier and abuts against the jack (4).

4. A No. 0 block bracket preloading device according to claim 3, characterized in that: The oblique support beams (13) and the vertical support beams (14) form a plurality of triangular structures between the upper horizontal main beam (12) and the lower horizontal main beam (11).

5. A No. 0 block bracket preloading device according to claim 3, characterized in that: The reaction frame (1) is anchored to the top of the pier via an anchor rod (5).

6. A No. 0 block bracket preloading device according to claim 5, characterized in that: The anchor rod (5) is arranged vertically, the bottom end of the anchor rod (5) is pre-buried at the top edge of the pier, and the top end of the anchor rod (5) is connected to the upper horizontal main beam (12).

7. A No. 0 block bracket preloading device according to claim 3, characterized in that: A plurality of load-bearing beams (6) are arranged between the lower horizontal main beam (11) and the top of the pier, and the load-bearing beams are arranged orthogonally to the lower horizontal main beam (11).

8. A No. 0 block bracket preloading device according to claim 3, characterized in that: The upper horizontal main beam (12) and the lower horizontal main beam (11) both comprise double-jointed I-beams.

9. A No. 0 block bracket preloading device according to claim 3, characterized in that: A reinforcing rib (111) is provided on the lower horizontal main beam (11) at a position abutting against the jack (4).

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