Hanging basket reverse jacking and pre-pressing device suitable for railway continuous beam

Abstract

The utility model discloses a railway continuous beam hanging basket reverse jacking prepressing device which comprises a bearing beam arranged on a hanging basket bottom die and an anchoring device arranged on the side wall of a pouring beam body, the anchoring device is connected with a counter-force frame, and a jack is arranged between the counter-force frame and the bearing beam. The counter-force of the counter-force frame is converted to the hanging basket bottom formwork through cooperation of the jack, the anchoring device, the counter-force frame and other structures, so that the jack forms pressure counter-force between the hanging basket bottom formwork and the counter-force frame. Compared with preloading in the prior art, heavy objects do not need to be carried on the hanging basket bottom formwork for many times to achieve preloading, the problem of site construction difficulties is solved, the construction progress is accelerated, structures such as the counter-force frame and the jack are matched to preload the hanging basket bottom formwork, and good economic benefits and social benefits are obtained.

Description

Technical Field

[0001] The utility model relates to a reverse top preloading device which can be applied to a railway continuous beam hanging basket. Background Art

[0002] At present, the cantilever casting continuous beam of the hanging basket is widely used in engineering construction. Its construction technology such as bracket, hanging basket and bracket preloading is to test the structural safety and eliminate elastic deformation. It is related to the overall linear quality of the bridge and is a key link in construction. At present, the traditional preloading method is pile loading preloading, which requires placing sandbags or other heavy objects on the bottom template of the hanging basket. Due to the large weight of the preloading load, the heavy objects need to be packed into small packages and transported from the ground to the bottom template of the hanging basket. Gradual loading takes a long time and is difficult. The construction preloading material investment is large. At the same time, the safety risk is high for hoisting construction involving roads, rivers, high piers, etc. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a reverse top preloading device applicable to a railway continuous beam hanging basket.

[0004] In order to solve the above-mentioned technical problems, this utility adopts the following technical solutions:

[0005] The invention discloses a preloading device applicable to a railway continuous beam hanging basket, comprising a cushion beam arranged on a hanging basket bottom mold, an anchoring device arranged on a side wall of a casting beam body, a reaction frame connected to the anchoring device, and a jack arranged between the reaction frame and the cushion beam.

[0006] Preferably, the reaction frame includes a horizontal steel section arranged transversely and a diagonal steel section arranged obliquely on the horizontal steel section.

[0007] Preferably, the anchoring device includes a first embedded part and a second embedded part which are pre-embedded at intervals on the side wall of the cast beam body, the diagonal bracing steel is connected to the first embedded part, and the horizontal steel is connected to the second embedded part.

[0008] Preferably, the first embedded part includes a first anchor bar embedded in the side wall of the cast beam body, and the first anchor bar is provided with a first anchor plate for connecting the diagonal bracing steel.

[0009] Preferably, the second embedded part includes a second anchor bar embedded in the side wall of the cast beam body, and the second anchor bar is provided with a second anchor plate for connecting the horizontal steel section.

[0010] Preferably, the diagonal bracing steel and the first anchor plate are welded.

[0011] Preferably, the horizontal steel section and the second anchor plate are welded.

[0012] Preferably, the diagonal bracing steel is connected to the middle section of the horizontal steel.

[0013] The beneficial effects of this utility model are as follows:

[0014] In this application, by using structures such as jacks, anchoring devices, and reaction frames in cooperation, the reaction force of the reaction frame is transferred to the hanging basket bottom formwork, so that a compressive reaction force is formed between the hanging basket bottom formwork and the reaction frame by the jack. Compared with the existing technology of surcharge preloading, it is not necessary to repeatedly carry heavy objects on the hanging basket bottom formwork to achieve surcharge preloading, which solves the problem of construction difficulties on site, speeds up the construction progress, and uses structures such as reaction frames and jacks in cooperation to preload the hanging basket bottom formwork, achieving good economic and social benefits. Description of the Drawings

[0015] The above and / or additional aspects and advantages of the present utility model will become apparent and easy to understand from the description of the embodiments in conjunction with the following drawings, where:

[0016] Figure 1 It is a schematic structural diagram of the main truss, suspension rod, and hanging basket bottom formwork of this application;

[0017] Figure 2 It is a schematic structural diagram of the hanging basket reaction top preloading device of this application;

[0018] Figure 3 It is a schematic structural diagram of the reaction frame and anchoring device of this application;

[0019] Figure 4 It is a schematic layout diagram of the embedded parts of this application. Detailed Description of the Embodiment

[0020] The embodiments of this utility model are described in detail below. The illustrated embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions throughout.

[0021] The orientation shown in the drawings cannot be understood as limiting the specific protection scope of this utility model. It is only for reference and understanding of the preferred embodiments. The positions of the product components shown in the drawings can be changed, the quantity can be increased, or the structure can be simplified.

[0022] The "connection" described in the specification and the "connection" relationship between the components shown in the drawings can be understood as fixedly connected, detachably connected, or integrally formed; it can be directly connected or connected through an intermediate medium. Those of ordinary skill in the art can understand the connection relationship according to the specific situation and can obtain different implementation methods such as screwing, riveting, welding, clamping, or embedding for substitution in a suitable manner.

[0023] With respect to the directional words such as up, down, left, right, top, bottom, etc. described in the specification and the directions shown in the drawings, the components may be in direct contact or in contact through other features between them; for example, "above" may mean directly above or obliquely above, or it simply means higher than other objects; other directions may be understood by analogy.

[0024] The materials for making parts with solid shapes shown in the specification and the drawings may be metal materials, non-metal materials or other synthetic materials; the mechanical processing techniques used for parts with solid shapes may be stamping, forging, casting, wire cutting, laser cutting, casting, injection molding, CNC milling, 3D printing, machining, etc.; ordinary technicians in this field can adaptively select or combine them according to different processing conditions, costs, and precisions, but are not limited to the above-mentioned materials and manufacturing processes.

[0025] A kind of anti-top preloading device applicable to railway continuous beam hanging basket, referring to Figures 1 - 3 , including a cushion beam 51 arranged on the bottom mold 4 of the hanging basket, an anchoring device arranged on the side wall 1-1 of the casting beam body, a reaction frame connected to the anchoring device, and a jack 52 is arranged between the reaction frame and the cushion beam 51.

[0026] Furthermore, the reaction frame includes a horizontal steel section 531 arranged transversely and a diagonal bracing steel section 532 arranged obliquely on the horizontal steel section 531 .

[0027] Furthermore, the anchoring device includes a first embedded part and a second embedded part which are pre-embedded at intervals on the side wall 1 - 1 of the cast beam body, the diagonal bracing steel 532 is connected to the first embedded part, and the horizontal steel 531 is connected to the second embedded part.

[0028] Furthermore, the first embedded part includes a first anchor bar 61 embedded in the side wall of the cast beam body, and a first anchor plate 62 for connecting the diagonal bracing steel 532 is provided on the first anchor bar 61 .

[0029] Furthermore, the second embedded part includes a second anchor bar 71 embedded in the side wall 1 - 1 of the cast beam body, and a second anchor plate 72 for connecting the horizontal steel section 531 is provided on the second anchor bar 71 .

[0030] Furthermore, the diagonal bracing steel 532 and the first anchor plate 62 are welded.

[0031] Furthermore, the horizontal steel section 531 and the second anchor plate 72 are welded.

[0032] Furthermore, the diagonal bracing steel 532 is connected to the middle section of the horizontal steel 531 .

[0033] The working principle of the utility model is:

[0034] As installed in the application scenario as Figure 1 shown, there are a main truss 2 of the hanging basket connected to the cantilever end 1 of the bridge, a suspender 3 connected to the main truss 2 of the hanging basket, a bottom form 4 of the hanging basket connected to the main truss 2 of the hanging basket through the suspender 3, and a preloading structure arranged above the bottom form 4 of the hanging basket; the preloading structure is the main design concept of this application, and the principle will be described in detail below.

[0035] Step 1: When pouring the 0# block beam section, the first anchor bar 61 and the second anchor bar 71 connected to the reaction frame are pre-embedded in the concrete in advance, and the bottom form 4 of the hanging basket is installed after the 0# block beam section is poured;

[0036] Step 2: Assemble the reaction frame. Connect the diagonal bracing section steel 532 to the horizontal section steel 531 to form the reaction frame, then connect the horizontal section steel 531 on the reaction frame to the second anchor plate 72, and connect the diagonal bracing section steel 532 on the reaction frame to the first anchor plate 62. As an example of Embodiment 1, a welding connection method can be selected between the first anchor plate 62 and the horizontal section steel 531, and a welding connection method can also be selected between the second anchor plate 72 and the diagonal bracing section steel 532;

[0037] Step 3: Lay a cushion beam 51 on the bottom form 4 of the hanging basket, and place the jack 52 on the laid cushion beam 51. The upper end of the jack 52 contacts the reaction frame, and tension is carried out by using the jack 52 below the bottom form 4 of the hanging basket to realize the reaction force on the reaction frame and thus transfer it to the bottom form 4 plate of the hanging basket, so that the jack 52 forms a compression reaction force between the bottom form 4 plate of the hanging basket and the reaction frame.

[0038] As Figure 4 is the side view of the continuous beam hanging basket reaction top preloading design. Preferably, two reaction frames (the reaction frames are not drawn) are symmetrically arranged on this side, and the two reaction frames are independent of each other. Each reaction frame is respectively connected to this side through an anchoring device. Figure 4 is the layout schematic diagram of the first embedded part and the second embedded part.

[0039] In the above technical solution, the diagonal bracing section steel 532 is preferably inclined and arranged in the middle section of the horizontal section steel 531, and thus the designed reaction frame has excellent stability.

[0040] Specifically, the anchoring device can be realized by taking the first embedded part and the second embedded part as examples. The design principles of the first embedded part and the second embedded part are the same. Taking the first embedded part as an example, the first embedded part can be realized by the first anchor bar 61 and the first anchor plate 62. The first anchor bar 61 is pre-embedded in the concrete, and then the first anchor plate 62 is installed; after the first anchor bar 61 and the first anchor plate 62 are stably connected, the reaction frame is connected to the first anchor plate 62. The design principles of the second anchor bar 71 and the second anchor plate 72 of the second embedded part are the same, so no further description will be given.

[0041] In this application, by using structures such as the jack 52, the anchoring device, and the reaction frame in cooperation, the reaction force of the reaction frame is transferred to the bottom formwork 4 of the hanging basket, so that the jack 52 forms a compression reaction force between the bottom formwork 4 of the hanging basket and the reaction frame. Compared with the existing technology of surcharge preloading, it is not necessary to repeatedly carry heavy objects on the bottom formwork 4 of the hanging basket to achieve surcharge preloading, which solves the problem of construction difficulties on site, speeds up the construction progress, and uses structures such as the reaction frame and the jack 52 in cooperation to preload the bottom formwork 4 of the hanging basket, achieving good economic and social benefits.

[0042] Although this utility model has been described in detail with reference to the above embodiments, it is obvious to those skilled in the art through the present disclosure that various changes or modifications can be made to this utility model without departing from the principle and spirit scope of this utility model defined by the claims. Therefore, the detailed description of the embodiments of the present disclosure is only used to explain, rather than to limit this utility model, and the scope of protection is defined by the content of the claims.

Claims

1. A preloading device applicable to a railway continuous beam hanging basket, characterized in that: It comprises a cushion beam (51) arranged on a bottom formwork (4) of a hanging basket, an anchoring device arranged on a side wall (1-1) of a casting beam body, a reaction frame connected to the anchoring device, and a jack (52) arranged between the reaction frame and the cushion beam (51).

2. The anti-top preloading device applicable to the railway continuous beam hanging basket according to claim 1 is characterized in that: The reaction frame comprises a horizontal steel section (531) arranged transversely and a diagonal bracing steel section (532) arranged obliquely on the horizontal steel section (531).

3. The anti-top preloading device applicable to the railway continuous beam hanging basket according to claim 2 is characterized in that: The anchoring device comprises a first embedded part and a second embedded part which are pre-embedded at intervals on the side wall (1-1) of the cast beam body, the diagonal bracing steel (532) is connected to the first embedded part, and the horizontal steel (531) is connected to the second embedded part.

4. The reverse top preloading device applicable to the railway continuous beam hanging basket according to claim 3 is characterized in that: The first embedded part comprises a first anchor bar (61) embedded in the side wall (1-1) of the cast beam body, and a first anchor plate (62) for connecting the diagonal bracing steel (532) is arranged on the first anchor bar (61).

5. The anti-top preloading device applicable to the railway continuous beam hanging basket according to claim 3 is characterized in that: The second embedded part comprises a second anchor bar (71) embedded in the side wall (1-1) of the cast beam body, and a second anchor plate (72) for connecting the horizontal steel section (531) is arranged on the second anchor bar (71).

6. The reverse top preloading device applicable to the railway continuous beam hanging basket according to claim 3 is characterized in that: The diagonal bracing steel (532) and the first anchor plate (62) are welded.

7. The reverse top preloading device applicable to the railway continuous beam hanging basket according to claim 3 is characterized in that: The horizontal steel (531) and the second anchor plate (72) are welded together.

8. The reverse top preloading device applicable to the railway continuous beam hanging basket according to claim 3 is characterized in that: The diagonal bracing steel (532) is connected to the middle section of the horizontal steel (531).

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