Formwork device for reserved steel bars in prefabricated small box girder bin

Abstract

The utility model provides a formwork device for a reserved steel bar in a prefabricated small box girder bin. The formwork device comprises two supporting frames and a formwork, the two foams are arranged on the inner side faces of the two supporting frames correspondingly; the plurality of reserved steel bars are respectively arranged in the two foams; and the supporting piece is arranged between the two supporting frames. According to the formwork device for the reserved reinforcing steel bars in the prefabricated small box girder bin, the supporting frame, the foam, the reserved reinforcing steel bars, the supporting pieces and other structures are matched with one another, on one hand, the situation that follow-up inner membrane mounting and dismounting are hindered due to the fact that inner partition plate reinforcing steel bars are reserved in advance is avoided, the inner membrane mounting process is smoother, and construction efficiency is greatly improved; on the other hand, reserved steel bars do not need to be canceled for preferentially guaranteeing the installation of the internal mold, design requirements are not violated, and it is ensured that projects are strictly propelled according to design standards; and meanwhile, the problems that the operation difficulty is high and the quality is difficult to guarantee when the steel bars are planted after the inner mold is dismantled are avoided.

Description

Technical Field

[0001] This utility model relates to the field of precast box girder construction technology, and in particular to a formwork device for reserving reinforcing bars in a precast small box girder compartment. Background Technology

[0002] In box girder bridge engineering, the box girder, as a type of beam, is hollow inside with flanges on both sides of the upper part, and its shape resembles a box, hence the name.

[0003] During the box girder pouring construction, it is necessary to carry out the rebar winding operation and the erection of the supporting formwork in advance. However, some design drawings clearly require that the rebar of the diaphragm and web of the precast box girder be continuous. This requirement has brought difficulties to the construction. If the rebar of the diaphragm inside the box girder is reserved in advance to meet the requirement of rebar continuity, the subsequent installation and removal of the inner formwork will not be able to be carried out smoothly. If the ease of installation of the inner formwork is given priority and the reserved rebar is cancelled, it will contradict the requirements of the design drawings. If the rebar is installed at the diaphragm inside the box girder after the inner formwork is removed, not only is the operation extremely difficult, but the final construction quality is also difficult to guarantee.

[0004] Therefore, it is necessary to provide a formwork device for reserving reinforcing bars in the precast small box girder compartment to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a template device for pre-reserving steel bars in the precast small box girder compartment, which solves the problems of: pre-reserving inner partition steel bars in advance will hinder the subsequent installation and removal of the inner formwork; prioritizing the installation of the inner formwork and canceling the pre-reserved steel bars will not conform to the design; and installing steel bars after the inner formwork is removed is difficult to operate and the quality is difficult to guarantee.

[0006] To solve the above-mentioned technical problems, this utility model provides a formwork device for pre-reserving reinforcing bars in a precast small box girder silo, comprising:

[0007] Two support frames;

[0008] Two foams are respectively disposed on the inner sides of the two support frames;

[0009] Multiple pre-reserved reinforcing bars are respectively disposed inside the two foams;

[0010] A support member is disposed between the two support frames.

[0011] Preferably, the two ends of the support member abut against the middle position of the opposite side of the two support frames.

[0012] Preferably, the template device for pre-reserved steel bars in the precast small box girder silo further includes a limiting mechanism, a limiting groove, and a limiting strip. The limiting mechanism is respectively disposed at both ends of the front of the support frame, the limiting groove is respectively opened at the top and bottom of the foam, and the limiting strip is respectively fixedly installed at the top and bottom of the inner side of the support frame, and the limiting strip is snapped into the inner side of the limiting groove.

[0013] Preferably, the limiting mechanism includes a baffle, a limiting plate, and a disassembly groove. The limiting plate is fixedly installed on the back of the baffle, and the disassembly groove is opened on the front of the baffle.

[0014] Preferably, the support frame has grooves at both ends on the front side, and the inner side of the grooves has through grooves.

[0015] Preferably, the baffle is disposed on the inner side of the groove, and the limiting plate is disposed on the inner side of the through groove.

[0016] Preferably, one end of the limiting plate is inserted into the interior of the foam.

[0017] Compared with related technologies, the formwork device for pre-reserved reinforcing bars in precast small box girder silos provided by this utility model has the following beneficial effects:

[0018] This utility model provides a formwork device for pre-reserved reinforcing bars inside a precast small box girder. Through the coordinated structure of a support frame, foam, pre-reserved reinforcing bars, and supporting components, it avoids the situation where pre-reserved inner partition reinforcing bars hinder the subsequent installation and removal of the inner membrane, making the inner membrane installation process smoother and greatly improving construction efficiency. Furthermore, it eliminates the need to cancel pre-reserved reinforcing bars and violate design requirements to prioritize inner formwork installation, ensuring that the project proceeds strictly according to design standards. Simultaneously, it avoids the difficulties and challenges in ensuring quality when installing reinforcing bars after inner formwork removal. Attached Figure Description

[0019] Figure 1 A schematic diagram of the structure of a first embodiment of a template device for reserving reinforcing bars in a precast small box girder silo provided by this utility model;

[0020] Figure 2 for Figure 1 The diagram shows a schematic of the support frame structure in the first embodiment.

[0021] Figure 3 A schematic diagram of the second embodiment of a template device for reserving reinforcing bars in a precast small box girder silo provided by this utility model;

[0022] Figure 4 for Figure 3 The diagram shown in the second embodiment is a schematic diagram of the front structure of the support frame.

[0023] Figure 5 for Figure 3 The diagram shows a three-dimensional structure of the limiting mechanism in the second embodiment.

[0024] Figure 6 for Figure 3 The enlarged schematic diagram of part A is shown.

[0025] The diagram labels are: 1. Support frame; 2. Foam; 3. Reservoir reinforcement; 4. Support component.

[0026] 5. Limiting mechanism; 51. Baffle; 52. Limiting plate; 53. Disassembly groove; 6. Limiting groove; 7. Limiting strip; 8. Groove; 81. Through groove. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] First Embodiment

[0029] Please refer to the following: Figure 1 , Figure 2 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a template device for reserving reinforcing bars in a precast small box girder silo provided by this utility model; Figure 2 for Figure 1 The first embodiment shown is a schematic diagram of the support frame structure. A formwork device for pre-reserved reinforcing bars in a precast small box girder silo includes: two support frames 1;

[0030] Two foams 2 are respectively disposed on the inner sides of the two support frames 1;

[0031] Multiple pre-reserved reinforcing bars 3 are respectively disposed inside the two foams 2;

[0032] Support member 4 is disposed between the two support frames 1.

[0033] Support 4 can directly use steel bars from the construction site. The steel bars are bent into a V shape so that the two ends of the steel bars abut against the sides of the two support frames 1, which serves to support the two support frames 4. After disassembly, the steel bars can be straightened and reused.

[0034] The two ends of the support member 4 abut against the middle position of the opposite side of the two support frames 1.

[0035] By setting up foam 2, reserved steel bars 3 and support components 4 during the installation process, both construction convenience and structural stability are ensured. After the concrete is poured, the support frame 1 and foam 2 can be easily removed, thus optimizing and integrating the construction process and improving the overall project quality and construction efficiency.

[0036] The working principle of the formwork device for pre-reserved steel bars in the precast small box girder silo provided by this utility model is as follows:

[0037] Before the box girder is poured, formwork must be erected on the inner and outer sides. After the formwork is erected, the reinforcing cage is placed inside the inner and outer formwork. Then, the reserved reinforcing bars 3 are inserted into the inner side of the foam 2 and bent on the side closest to the support frame 1. The foam is then placed on the inner side of the support frame 1. Next, the support frame 1 is placed at the position where the reserved reinforcing bars are to be installed, ensuring that the front of the support frame 1 is tightly attached to the corresponding side of the inner formwork. Then, the reserved reinforcing bars 3 are firmly connected to the reinforcing cage using spiral wound wire to ensure the stability of the overall structure. After the preparation work is completed, concrete can be poured. After the pouring process is completed, the outer formwork and inner formwork are removed in sequence, and then the support frame 1 is disassembled. After that, the foam 2 is peeled off from the surface of the reserved reinforcing bars 3. At this time, the reserved reinforcing bars 3 located on the inner side of the box girder are straightened. Finally, the welding work is completed according to the specifications to ensure that the construction quality of the box girder meets the standards.

[0038] Compared with related technologies, the formwork device for pre-reserved reinforcing bars in precast small box girder silos provided by this utility model has the following beneficial effects:

[0039] By coordinating the structures such as support frame 1, foam 2, reserved steel bars 3, and support components 4, the following measures are taken: First, the situation where the reserved inner partition steel bars hinder the subsequent installation and removal of the inner membrane is avoided, making the inner membrane installation process smoother and greatly improving construction efficiency. Second, there is no need to cancel the reserved steel bars or violate design requirements in order to prioritize the installation of the inner formwork, ensuring that the project is carried out strictly in accordance with the design standards. At the same time, the difficulties in operation and quality assurance faced by rebar installation after the inner formwork is removed are also avoided.

[0040] Second Embodiment

[0041] Please refer to the following: Figure 3 , Figure 4 , Figure 5 and Figure 6 Based on the formwork device for reserving reinforcing bars in a precast small box girder silo provided in the first embodiment of this application, the second embodiment of this application proposes another formwork device for reserving reinforcing bars in a precast small box girder silo. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0042] Specifically, the second embodiment of this application provides a template device for reserving reinforcing bars in a precast small box girder silo, which differs in that the template device for reserving reinforcing bars in a precast small box girder silo further includes a limiting mechanism 5, a limiting groove 6, and a limiting strip 7. The limiting mechanism 5 is respectively disposed at both ends of the front of the support frame 1, the limiting groove 6 is respectively opened at the top and bottom of the foam 2, and the limiting strip 7 is respectively fixedly installed at the top and bottom of the inner side of the support frame 1, and the limiting strip 7 is snapped into the inner side of the limiting groove 6.

[0043] Each of the limiting mechanisms 5 includes a baffle 51, a limiting plate 52, and a disassembly groove 53. The limiting plate 52 is fixedly installed on the back of the baffle 51, and the disassembly groove 53 is opened on the front of the baffle 51.

[0044] The support frame 1 has grooves 8 at both ends on the front side, and a through groove 81 is formed on the inner side of the groove 8.

[0045] The baffle 51 is disposed on the inner side of the groove 8, and the limiting plate 52 is disposed on the inner side of the through groove 81.

[0046] One end of the limiting plate 52 is inserted into the interior of the foam 2.

[0047] The material of the limiting strip 7 is the same as that of the foam, and the limiting strip 7 is a dovetail strip, and the limiting groove 6 matches it;

[0048] By providing a disassembly groove 53 on the front of the baffle 51, it is easy to move the baffle 51 away from the support frame 1 by inserting a tool into the inner side of the disassembly groove 53.

[0049] The limiting plate 52 is pointed at one end, which is used to insert into the inside of the foam 2, so as to facilitate insertion into the inner side of the foam 2.

[0050] The working principle of the formwork device for pre-reserved steel bars in the precast small box girder silo provided by this utility model is as follows:

[0051] When installing foam 2 and support frame 1, foam 2 with pre-reserved steel bars 3 is inserted into the inner side of support frame 1 from one end, and the limiting strip 7 is inserted into the inner side of limiting groove 6 to prevent foam 2 from falling off the inner side of support frame 1. Then, limiting plate 52 is inserted into the inside of foam 2 through through groove 81 to prevent foam 2 from moving left and right on the inner side of support frame 1.

[0052] Compared with related technologies, the formwork device for pre-reserved reinforcing bars in precast small box girder silos provided by this utility model has the following beneficial effects:

[0053] By using the limiting mechanism 5, the limiting groove 6, and the limiting strip 7 in coordination, when installing foam 2 and support frame 1, simply insert the limiting strip 7 into the inner side of the limiting groove 6 and insert the limiting mechanism 5 into both ends of foam 2 to limit the movement between foam 2 and support frame 1, preventing displacement between foam 2 and support frame 1 during subsequent concrete pouring. Furthermore, during subsequent demolding, support frame 1 can be moved away from foam 2, causing the connection between limiting strip 7 and foam 2 to break, thus facilitating disassembly of foam 2 and support frame 1.

[0054] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A formwork device for pre-reserving reinforcing bars inside a precast small box girder silo, characterized in that, include: Two support frames; Two foams are respectively disposed on the inner sides of the two support frames; Multiple pre-reserved reinforcing bars are respectively disposed inside the two foams; A support member is disposed between the two support frames.

2. The formwork device for pre-reserved reinforcing bars in a precast small box girder silo according to claim 1, characterized in that, The two ends of the support member abut against the middle position of the opposite side of the two support frames.

3. The formwork device for pre-reserved reinforcing bars in a precast small box girder silo according to claim 1, characterized in that, It also includes a limiting mechanism, a limiting groove, and a limiting strip. The limiting mechanism is respectively disposed at both ends of the front of the support frame. The limiting groove is respectively opened at the top and bottom of the foam. The limiting strip is respectively fixedly installed at the top and bottom of the inner side of the support frame. The limiting strip is snapped into the inner side of the limiting groove.

4. The formwork device for pre-reserved reinforcing bars in a precast small box girder silo according to claim 3, characterized in that, Each limiting mechanism includes a baffle, a limiting plate, and a disassembly groove. The limiting plate is fixedly installed on the back of the baffle, and the disassembly groove is opened on the front of the baffle.

5. A formwork device for pre-reserved reinforcing bars in a precast small box girder silo according to claim 4, characterized in that, The support frame has grooves at both ends on the front side, and a through groove is formed on the inner side of the groove.

6. A formwork device for pre-reserved reinforcing bars in a precast small box girder silo according to claim 5, characterized in that, The baffle is disposed on the inner side of the groove, and the limiting plate is disposed on the inner side of the through groove.

7. A formwork device for pre-reserved reinforcing bars in a precast small box girder silo according to claim 6, characterized in that, One end of the limiting plate is inserted into the interior of the foam.

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