High-pier bridge hanging basket pre-pressing counter-force structure

Abstract

The utility model discloses a high-pier bridge hanging basket pre-pressing counter-force structure, and belongs to the technical field of bridge construction. The structure comprises a box girder, a counter-force frame, a counter-force applying assembly, a hanging basket and a hanging basket bottom plate, the counter-force frame is installed on the side wall of the box girder through a plurality of embedded assemblies, the hanging basket bottom plate is located below the counter-force frame, and the counter-force applying assembly is arranged between the hanging basket bottom plate and the counter-force frame; the reaction frame comprises a plurality of A-shaped supports which are arranged side by side, and the A-shaped supports are connected into a whole through an upper flat rod and a lower flat rod which are arranged side by side. Compared with a V-shaped frame, the structural stability of the A-shaped supports is better, all the A-shaped supports are connected into a stress whole through the upper flat rods and the lower flat rods which are arranged side by side to form the reaction frame, the stability, strength, rigidity and integrity of the reaction frame are good, and after the reaction frame is installed on the side wall of the box girder through the multiple embedded assemblies, the stress state of the reaction frame is close to the stress state of the box girder; and the pre-pressing effect of the counter-force structure on the hanging basket is ensured.

Description

Technical Field

[0001] The utility model relates to a pre-compression reaction force structure of a hanging basket for a high pier bridge, belonging to the technical field of bridge construction. Background Art

[0002] Prestressing high pier bridges with hanging baskets typically involves methods such as stacking sandbags, and applying prestressed counterpressure using extended, precision-rolled rebar and stranded steel wire. Stacking sandbags has drawbacks such as high cost and a long construction period, while applying prestressed counterpressure using precision-rolled rebar and stranded steel wire presents technical difficulties and high safety risks associated with anchor withdrawal.

[0003] To this end, the Chinese patent document with publication number CN110359374A discloses a hanging basket prestressing reaction force support, comprising: a concrete casting block, an embedded part provided on one side of the concrete casting block, a triangular reaction force support installed on the embedded part, a jack provided on the lower side of the triangular reaction force support, the jack being installed on the hanging basket bottom formwork through a double-piece I-beam support, the two ends of the hanging basket bottom formwork being installed on the bottom support sliding beam through the bottom formwork fixing parts, the bottom support sliding beam being installed on the concrete casting block through the sliding beam fixing parts and the sliding beam supporting parts, the upper end of the concrete casting block being provided with a hanging basket, the hanging basket being connected to the bottom support sliding beam through the hanging basket prestressing steel cable. The prestressing method using the embedded reaction force frame jack requires fewer operators, less lifting work, and is easy to install. The prestressing load value is clear and controllable. It has a higher efficiency than conventional sandbags and other pile loading prestressing methods, avoids the risk of unreasonable load distribution, overcomes the defect of insufficient pile loading prestressing, and is safe and controllable.

[0004] However, the triangular reaction bracket used in the hanging basket pre-stress reaction bracket is actually a V-shaped bracket, which has poor stability. Moreover, multiple triangular reaction brackets are subjected to force separately when the reaction force is applied. The deformation of each triangular reaction bracket is inconsistent and the integrity is poor, which ultimately leads to a large numerical error in the hanging basket pre-stress settlement. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a high pier bridge hanging basket pre-compression reaction force structure.

[0006] The utility model is achieved through the following technical solutions:

[0007] A hanging basket preloading reaction force structure for a high pier bridge comprises a box girder, a reaction frame, a reaction force applying assembly, a hanging basket and a hanging basket bottom plate. The reaction frame is mounted on the side wall of the box girder via a plurality of embedded assemblies. The hanging basket is fixed to the top of the box girder via a rear anchor. The hanging basket is located above the reaction frame. The hanging basket bottom plate is located below the reaction frame. One end of the hanging basket bottom plate is connected to the bottom of the box girder via a connector, and the other end is connected to the front upper cross beam of the hanging basket via a front steel sling. The reaction force applying assembly is arranged between the hanging basket bottom plate and the reaction frame.

[0008] The reaction frame includes a plurality of A-shaped brackets arranged side by side, and the plurality of A-shaped brackets are connected into a whole through upper horizontal bars and lower horizontal bars arranged side by side.

[0009] The A-shaped bracket includes a cross bar, an oblique bar and a vertical bar. One end of the oblique bar is connected to one end of the cross bar, and the other end of the oblique bar and the other end of the cross bar are respectively connected to the box beam through embedded components. One end of the vertical bar is connected to the middle of the cross bar, and the other end is connected to the middle of the oblique bar.

[0010] The upper horizontal rod connects together ends of the oblique rods of all the A-shaped brackets that are away from the cross rod.

[0011] The lower horizontal bar connects together the ends of the cross bars of all the A-shaped brackets that are away from the box beam.

[0012] The two ends of the upper horizontal bar and the two ends of the lower horizontal bar are respectively connected to the box beam through embedded components.

[0013] Two extended support rods are also arranged side by side on the reaction frame, and one end of the extended support rod away from the reaction frame is connected to the box beam through an embedded component.

[0014] The embedded component includes an anchor steel plate and a plurality of anchor steel bars embedded in the box beam, and one end of the anchor steel bar is connected to the anchor steel plate.

[0015] The reaction force applying assembly includes a jack, an upper distribution beam arranged on the jack, and a lower distribution beam arranged at the bottom of the jack.

[0016] The jack is a through-type jack.

[0017] The beneficial effects of the present invention are: the A-shaped bracket has better structural stability than the V-shaped bracket, all A-shaped brackets are connected into a force-bearing whole through the upper horizontal rod and the lower horizontal rod arranged side by side to form a reaction frame, the reaction frame has good stability, strength, rigidity and integrity, so that all A-shaped brackets can form an overall force-bearing structural system with good deformation consistency, and after the reaction frame is installed on the side wall of the box beam through multiple embedded components, its stress state is close to the stress state of the box beam, which helps to ensure the pre-stressing effect of the reaction structure on the hanging basket and helps to reduce the numerical error of the hanging basket pre-stressing settlement. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 This is a schematic diagram of the assembly of the reaction frame and the box beam after the extended support rod is removed according to the present invention;

[0020] Figure 3 This is a schematic diagram of the assembly of the reaction frame and box beam of the utility model.

[0021] In the figure: 1-box girder, 2-anchor steel bars, 3-anchor steel plates, 4-diagonal bars, 5-cross bars, 6-upper distribution beam, 7-jacks, 8-lower distribution beam, 9-basket bottom plate, 10-connecting parts, 11-front steel slings, 12-vertical poles, 13-front upper cross beam, 4-basket, 15-rear anchors, 16-upper horizontal bars, 17-lower horizontal bars, 18-extended support rods. DETAILED DESCRIPTION

[0022] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0023] like Figures 1 to 3 As shown, the utility model discloses a prestressed reaction force structure of a hanging basket for a high pier bridge, comprising a box girder 1, a reaction frame, a reaction force applying assembly, a hanging basket 14 and a hanging basket bottom plate 9, wherein the reaction frame is mounted on the side wall of the box girder 1 through a plurality of embedded assemblies, the hanging basket 14 is mounted and fixed to the top of the box girder 1 through a rear anchor 15, and the hanging basket 14 is located above the reaction frame, the hanging basket bottom plate 9 is located below the reaction frame, and one end of the hanging basket bottom plate 9 is connected to the bottom of the box girder 1 through a connector 10, and the other end is connected to the front upper cross beam 13 of the hanging basket 14 through a front steel sling 11, and the reaction force applying assembly is arranged between the hanging basket bottom plate 9 and the reaction frame;

[0024] The reaction frame includes a plurality of A-shaped brackets arranged side by side, and the plurality of A-shaped brackets are connected into a whole through upper horizontal bars 16 and lower horizontal bars 17 arranged side by side. When in use, the reaction force applied by the reaction force applying assembly is transmitted to the box girder 1 through the reaction frame and the embedded assembly on the one hand, and is transmitted to the rear anchor 15 through the hanging basket bottom plate 9, the front steel sling 11, the front upper crossbeam 13 and the hanging basket 14 on the other hand, thereby achieving pre-stressing of the hanging basket 14. The A-shaped bracket has better structural stability than the V-shaped frame. All A-shaped brackets are connected into a force-bearing whole through upper horizontal bars 16 and lower horizontal bars 17 arranged side by side to form a reaction frame. The reaction frame has good stability, strength, rigidity and integrity, so that all A-shaped brackets can form an integral force-bearing structural system with good deformation consistency. After the reaction frame is installed on the side wall of the box girder 1 through multiple embedded components, its stress state is close to the stress state of the box girder 1, which helps to ensure the pre-stressing effect of the reaction structure on the hanging basket 14 and helps to reduce the numerical error of the pre-stressing settlement of the hanging basket 14. .

[0025] The A-shaped bracket includes a cross bar 5, an oblique bar 4 and a vertical bar 12. One end of the oblique bar 4 is connected to one end of the cross bar 5, and the other end of the oblique bar 4 and the other end of the cross bar 5 are respectively connected to the box beam 1 through embedded components. One end of the vertical bar 12 is connected to the middle of the cross bar 5, and the other end is connected to the middle of the oblique bar 4.

[0026] The upper horizontal rod 16 connects together the ends of the oblique rods 4 in all the A-shaped brackets away from the cross rod 5.

[0027] The lower horizontal rod 17 connects together the ends of the cross bars 5 of all the A-shaped brackets away from the box beam 1.

[0028] The two ends of the upper horizontal rod 16 and the two ends of the lower horizontal rod 17 are connected to the box beam 1 through pre-embedded components, thereby improving the connection strength between the reaction frame and the box beam 1.

[0029] The reaction frame is also provided with two extended support rods 18 side by side, and the ends of the extended support rods 18 away from the reaction frame are connected to the box beam 1 through embedded components. The connection strength between the reaction frame and the box beam 1 can be improved.

[0030] The embedded component includes an anchor steel plate 3 and a plurality of anchor steel bars 2 embedded in the box beam 1 , and one end of the anchor steel bar 2 is connected to the anchor steel plate 3 .

[0031] The reaction force applying assembly includes a jack 7, an upper distribution beam 6 provided on the jack 7, and a lower distribution beam 8 provided at the bottom of the jack 7. When in use, the jack 7 transmits the reaction force to the reaction frame through the upper distribution beam 6, and transmits the reaction force to the basket bottom plate 9 through the lower distribution beam 8, thereby ensuring the transmission effect of the reaction force (i.e., concentrated force) of the jack 7.

[0032] The jack 7 is a through-type jack.

Claims

1. A preloading reaction force structure for a high pier bridge hanging basket, characterized by: The invention comprises a box beam (1), a reaction frame, a reaction force applying component, a hanging basket (14) and a hanging basket bottom plate (9), wherein the reaction frame is installed on the side wall of the box beam (1) through a plurality of embedded components, the hanging basket (14) is fixed to the top of the box beam (1) through a rear anchor (15), and the hanging basket (14) is located above the reaction frame, the hanging basket bottom plate (9) is located below the reaction frame, and one end of the hanging basket bottom plate (9) is connected to the bottom of the box beam (1) through a connecting piece (10), and the other end is connected to the front upper cross beam (13) of the hanging basket (14) through a front steel sling (11), and the reaction force applying component is arranged between the hanging basket bottom plate (9) and the reaction frame; The reaction frame comprises a plurality of A-shaped brackets arranged side by side, and the plurality of A-shaped brackets are connected into a whole through an upper flat rod (16) and a lower flat rod (17) arranged side by side.

2. The high pier bridge hanging basket preloading reaction force structure according to claim 1, characterized in that: The A-shaped bracket comprises a crossbar (5), an oblique bar (4) and a vertical bar (12); one end of the oblique bar (4) is connected to one end of the crossbar (5); the other end of the oblique bar (4) and the other end of the crossbar (5) are respectively connected to the box beam (1) through embedded components; one end of the vertical bar (12) is connected to the middle of the crossbar (5), and the other end is connected to the middle of the oblique bar (4).

3. The high pier bridge hanging basket preloading reaction force structure according to claim 2, characterized in that: The upper horizontal rod (16) connects together the ends of the oblique rods (4) in all the A-shaped brackets that are away from the cross rod (5).

4. The high pier bridge hanging basket preloading reaction force structure according to claim 2, characterized in that: The lower horizontal rod (17) connects together the ends of the cross bars (5) of all the A-shaped brackets that are away from the box beam (1).

5. The high pier bridge hanging basket preloading reaction force structure according to claim 1, characterized in that: The two ends of the upper horizontal bar (16) and the two ends of the lower horizontal bar (17) are respectively connected to the box beam (1) through embedded components.

6. The high pier bridge hanging basket preloading reaction force structure according to claim 1, characterized in that: Two extended support rods (18) are also arranged side by side on the reaction frame, and one end of the extended support rod (18) away from the reaction frame is connected to the box beam (1) through an embedded component.

7. The high pier bridge hanging basket preloading reaction force structure according to claim 1, characterized in that: The embedded component comprises an anchoring steel plate (3) embedded in the box beam (1) and a plurality of anchoring steel bars (2), and one end of the anchoring steel bar (2) is connected to the anchoring steel plate (3).

8. The high pier bridge hanging basket preloading reaction force structure according to claim 1, characterized in that: The reaction force applying assembly comprises a jack (7), an upper distribution beam (6) arranged on the jack (7), and a lower distribution beam (8) arranged at the bottom of the jack (7).

9. The high pier bridge hanging basket preloading reaction force structure according to claim 8, characterized in that: The jack (7) is a through-type jack.

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