Embedded steel bar inspection frame plate
By using embedded steel bars to check the multi-layer orifice plate and intermediate vertical frame structure of the frame plate, the problem of pre-embedded steel bars being easily displaced during construction is solved, and the precise correction and alignment of the steel bar position and verticality are achieved, and the construction quality is improved.
Patent Information
- Application Number
- CN202421848968.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-01
- Publication Date
- 2025-05-30
- Estimated Expiration
- 2034-08-01
AI Technical Summary
During the construction of the prefabricated channel trough of the bottom first and the wall, the embedded steel bars are prone to misalignment and body deformation, resulting in reduced installation accuracy and difficult construction.
An embedded steel bar inspection frame plate is provided, including a multi-layer orifice plate and an intermediate vertical frame. The straightening hole is used to correct the position and verticality of the steel bars to ensure the accurate alignment of the steel bars with the grouting steel bar sleeve.
Effectively correct the position and perpendicularity of the steel bars between the poured base plate and the prefabricated side wall to ensure that the exposed steel bars meet the verticality and position of the design requirements and improve construction quality.
Smart Images
Figure CN222926102U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of concrete pouring, in particular to a pre-buried steel bar inspection frame plate. Background Technique
[0002] For the precast channel with bottom first and then wall, the concrete bottom slab is poured first, and then the precast side wall components are installed on the bottom slab to form the overall channel. In this construction method, vertical pre-buried steel bars need to be installed in the cast-in-place bottom slab first, which are used to connect with the grouting steel bar sleeves in the precast side walls, so as to firmly connect the side wall components to the bottom slab. Therefore, there are high requirements for the installation accuracy of the vertical pre-buried steel bars in the bottom slab to ensure that the installation quality of the pre-buried steel bars meets the design standards.
[0003] The existing precast side wall components with the above structural forms have the following problems:
[0004] During the construction of the pre-buried steel bars in the bottom slab, there are problems such as inaccurate positioning, loose binding, skew, looseness, impact of construction external forces and trampling by personnel, and impact and collision of the impact force of concrete placing and vibration on the steel bars, which will cause the pre-buried steel bars to be displaced and deformed, the binding to be loosened, resulting in the skew at the top of the vertical pre-buried steel bars, the position deviation of the bottom root part of the exposed pre-buried steel bars, and even the overall inclination of the pre-buried steel bars, reducing the accuracy, which will cause great difficulties to the construction.
[0005] Therefore, how to control the quality problem of the steel bar connection between the cast-in-place bottom slab and the precast side wall, how to inspect and correct the exposed steel bars of the pre-buried steel bars, how to control the skew at the top of the vertical pre-buried steel bars, how to control the position deviation of the bottom root part of the exposed pre-buried steel bars, how to control the deviation of the overall inclination position of the pre-buried steel bars, and how to ensure that the exposed steel bars reach the verticality and position required by the design, and ensure the accurate one-to-one alignment of the exposed steel bars and the grouting steel bar sleeves are the problems that need to be solved urgently at present. Summary of the Invention
[0006] In order to solve the problem that the pre-buried steel bars in the existing side wall components are prone to dislocation and deformation, the utility model provides a pre-buried steel bar inspection frame plate, which can inspect and correct the position and verticality of the steel bars between the cast-in-place bottom slab and the precast side wall.
[0007] In order to achieve the above purpose, the technical solution of the utility model is:
[0008] A pre-embedded steel bar inspection frame plate is used to inspect and adjust the position and perpendicularity of the steel bars on the cast-in-place bottom plate in advance. It includes multiple layers of orifice plates arranged in parallel, with an intermediate vertical frame arranged between the multiple layers of orifice plates. Straightening holes matching the steel bars are arranged on the orifice plates, and there is a gap between the inner wall of the straightening holes and the outer wall of the steel bars; the intermediate vertical frame is in a multi-cell shape and is used to support the orifice plates. The straightening holes are used to correct the position and perpendicularity of the steel bars.
[0009] Further, the number of layers of the orifice plates is two. The height of the inspection frame plate is not less than 90% of the height of the steel bars.
[0010] Further, the orifice plates are in the shape of rectangular plates, and a row of straightening holes is arranged at positions near both sides of the long side of the orifice plates. The spacing between the straightening holes is equal to the spacing between the steel bars.
[0011] Further, the straightening holes are circular, and the diameter of the straightening holes is larger than the diameter of the steel bars and less than or equal to the diameter of the steel bar sleeves. The steel bars and the steel bar sleeves are both placed in the straightening holes.
[0012] Further, the length and width of the intermediate vertical frame are the same as the length and width of the orifice plates. The height of the intermediate vertical frame is greater than the height of the orifice plates.
[0013] Further, the intermediate vertical frame includes at least three cross plates and at least three longitudinal plates. The cross plates and the longitudinal plates are perpendicular to each other, and the cross plates and the longitudinal plates are both arranged staggeredly with the straightening holes. The steel bars pass through the straightening holes and the gaps between the cross plates and the longitudinal plates.
[0014] Further, the length of the cross plates is greater than the length of the longitudinal plates. A first notch is opened at the lower part of the cross plates, and a second notch is opened at the upper part of the longitudinal plates. The first notch and the second notch are matched. The cross plates and the longitudinal plates have the same height.
[0015] Further, the height of the first notch is one-fourth of the height of the intermediate vertical frame, and the height of the second notch is three-fourths of the height of the intermediate vertical frame. The cross plates and the longitudinal plates are inserted into each other.
[0016] Through the above technical solutions, the beneficial effects of the present utility model are as follows:
[0017] The present utility model can effectively inspect and correct the exposed steel bars of the pre-embedded steel bars on the cast-in-place bottom plate in advance, can inspect and correct the skew occurring at the top of the vertical pre-embedded steel bars, can inspect and correct the offset of the bottom root position of the exposed pre-embedded steel bars, can inspect and correct the offset of the overall inclined position of the pre-embedded steel bars, can ensure that the exposed steel bars reach the perpendicularity and position required by the design, ensure the accurate one-to-one alignment of the exposed steel bars and the grouting steel bar sleeves, and improve the construction quality.
[0018] The utility model has the advantages of reasonable structural design, simple structure, convenient operation and high inspection and calibration accuracy. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 is a schematic structural view of the utility model;
[0020] Figure 2 is a schematic structural view of the middle vertical frame of the utility model;
[0021] Figure 3 is the installation schematic of the utility model Figure 1 ;
[0022] Figure 4 is the installation schematic of the utility model Figure 2 ;
[0023] In the drawings, the reference numbers are: 1 is the orifice plate, 11 is the straightening hole, 2 is the middle vertical frame, 21 is the horizontal plate, 211 is the first notch, 22 is the vertical plate, 221 is the second notch, 3 is the precast bottom plate, and 4 is the steel bar. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0024] The following further describes the utility model in conjunction with the drawings and the specific embodiments:
[0025] As Figures 1 to 4 shown, this embodiment provides a pre-embedded steel bar inspection frame plate, which is located above the precast bottom plate 3 during use and is used to inspect and adjust the position and perpendicularity of the steel bars 4 on the precast bottom plate 3. The steel bars 4 are vertically inserted into the precast bottom plate 3; the inspection frame plate includes multiple layers of orifice plates 1 arranged in parallel, the multiple layers of orifice plates 1 are arranged along the direction of the steel bars 4, and a middle vertical frame 2 is arranged between the multiple layers of orifice plates 1. The inspection frame plate can be made of steel or high-strength plastic plate.
[0026] The number of layers of the multiple layers of orifice plates 1 is at least two layers. The orifice plate 1 is provided with straightening holes 11 matching the steel bars 4. The orifice plate 1 is in the shape of a rectangular plate. The length and width of the orifice plate 1 are the same as the length and width of the precast bottom plate 3. One row of straightening holes 11 is arranged at each position near both sides of the long side of the orifice plate 1. A total of two rows of straightening holes 11 are arranged on the orifice plate 1. The spacing between the straightening holes 11 in the same row is equal to the spacing between the steel bars 4 at the same position. The straightening holes 11 are circular. The diameter of the straightening holes 11 is larger than the diameter of the steel bars 4 and less than or equal to the diameter of the steel bar sleeve. There is a gap between the inner wall of the straightening holes 11 and the outer wall of the steel bars 4. Specifically, the number of layers of the orifice plate 1 is two layers, the length of the orifice plate 1 is 1988 mm, the width is 600 mm, the thickness of the orifice plate 1 is 15 mm, the diameter of the pre-embedded steel bar 4 is selected to be 22 mm, and the diameter of the straightening holes 11 is 30 mm.
[0027] The length of the cast-in-place bottom slab 3 in the prefabricated channel trough with bottom first and wall later is 10 m per bay. The corresponding precast side walls are 5 pieces. The width of one side wall component is 2 m, and the installation gap between adjacent side wall components is 12 mm. The actual length of a single precast channel trough side wall component is 1988 mm. The embedded steel bars 4 of the cast-in-place bottom slab 3 are divided into inner row and outer row, longitudinally arranged along the axis of the channel trough. The spacing between the two rows of steel bars 4 inside and outside the cast-in-place bottom slab 3 is determined according to the thickness of the bottom of the precast component and the thickness of the steel bar protective layer. In this case, the thickness of the bottom of the precast component is 600 mm, and the protective layer thickness is 50 mm. Correspondingly, the center distance between the two rows of steel bars 4 inside and outside the cast-in-place bottom slab 3 is 478 mm. The diameter of the embedded steel bars 4 selected in this case is 22 mm, and the spacing of the embedded steel bars 4 of the cast-in-place bottom slab 3 longitudinally arranged along the axis of the channel trough is 200 mm.
[0028] According to the length of the anchorage section of the steel bar connection sleeve in the precast component, in this case, it is determined that the length of the exposed steel bar 4 is the same as that of the anchorage section of the steel bar connection sleeve, which is 200 mm.
[0029] The middle support frame 2 is in the shape of a multi-cell grid. The middle support frame 2 is used to support the orifice plate 1. The length and width of the middle support frame 2 are the same as those of the orifice plate 1. The middle support frame 2 is composed of a plurality of horizontal plates 21 and a plurality of vertical plates 22 spliced together. The middle support frame 2 includes at least three horizontal plates 21 and at least three vertical plates 22. The horizontal plates 21 and the vertical plates 22 are perpendicular to each other. The horizontal plates 21 and the vertical plates 22 are both arranged staggered with the straightening holes 11. Specifically, the height of the middle support frame 2 is 150 mm.
[0030] The horizontal plates 21 and the vertical plates 22 are perpendicular to each other and have the same height. The horizontal plates 21 and the vertical plates 22 are in a form of splicing with each other. The length of the horizontal plates 21 is greater than the length of the vertical plates 22. A first notch 211 is opened at the lower part of the horizontal plates 21, and a second notch 221 is opened at the upper part of the vertical plates 22. The first notch 211 and the second notch 221 are matched. The height of the first notch 211 is one-fourth of the height of the middle support frame 2, and the height of the second notch 221 is three-fourths of the height of the middle support frame 2. The number of the first notches 211 on the horizontal plates 21 is equal to the number of the vertical plates 22, and the number of the second notches 221 on the vertical plates 22 is equal to the number of the horizontal plates 21.
[0031] To ensure the connection stability of the inspection frame plate, welding or high-strength resin glue bonding can be adopted between the orifice plate 1 and the horizontal plates 21 and the vertical plates 22 of the middle support frame plate 2. The bonding and welding should be firm and reliable. When the inspection frame plate is made of high-strength plastic sheet, the orifice plate 1 and the middle support frame plate 2 are made of 15 mm thick sheet; when made of steel plate, the orifice plate 1 and the middle support frame plate 2 are made of 1.5 - 2.5 mm thick steel plate, and at the same time, round holes should be cut on the orifice plate 1 to reduce the weight.
[0032] To ensure the correction effect of the steel bar 4, the height of the inspection frame plate is not less than 90% of the height of the steel bar 4. By controlling the protruding position and direction of the embedded steel bar 4, three-dimensional inspection is formed, which can ensure the smooth insertion of the exposed steel bar 4 without deviation.
[0033] During use, align the first notch 211 of the cross plate 21 with the second notch 221 of the longitudinal plate 22, fasten them tightly to each other, and glue them firmly with special glue to form the middle vertical frame 2. After fastening, pay attention to checking the length of the diagonal line to ensure that the middle vertical frame is rectangular, and the length error of the diagonal line is 2 mm. The plane of the middle vertical frame 2 should be flat without warping. Install the orifice plate 1 at the bottom and top of the middle vertical frame 2, and the embedded steel bar inspection frame plate of the present invention can be formed.
[0034] Use the installed embedded steel bar inspection frame plate to inspect and correct the exposed embedded steel bars 4 in each bin, so that the perpendicularity and position of the exposed steel bars 4 all meet the design standards and meet the installation requirements of the side wall components. After the inspection frame plate is put on, the exposed steel bar 4 is 10 mm exposed, and the height of the inspection frame plate is less than the length of the exposed embedded steel bar 4, so as to facilitate the adjustment of the skewed embedded steel bar 4 to meet the inspection requirements.
[0035] When there are skewed exposed steel bars 4 in the cast-in-place bottom plate 3 first, they cannot be inserted into the straightening holes 11 of the orifice plate 1. At this time, the inspection frame plate can be removed, and the skewed steel bar 4 can be straightened with a special steel bar wrench. When it meets the requirements, place the inspection frame plate on the top of the embedded steel bar 4 again, so that the exposed steel bar 4 penetrates into the straightening holes 11 of the orifice plate 1. In this way, the skewed exposed steel bars 4 are repeatedly corrected until they all penetrate into the straightening holes 11 of the inspection frame plate, and this inspection and correction is considered completed.
[0036] When using the inspection frame plate to check and calibrate the exposed steel bar 4, if there is a large deviation at the root part of the exposed steel bar 4, the top of the exposed steel bar 4 can penetrate into the straightening hole 11 of the inspection frame plate after correction, but the bottom still cannot penetrate into the straightening hole 11 of the inspection frame plate. When the position deviation of the bottom steel bar 4 is small, the "chisel out bent bar method" can be used to adjust the position of the bottom steel bar 4 to meet the design requirements. The method is to chisel out a deep pit in the bottom plate concrete around the distorted bottom steel bar 4 that does not meet the requirements to expose the bottom steel bar 4, and then use a steel bar bending tool to bend it back to the correct design position to meet the requirements, and then backfill the chiseled pit with concrete to fix the steel bar 4. When the deviation of the bottom position of the exposed steel bar 4 is large, this steel bar 4 can be cut off, and a new steel bar 4 is drilled and implanted at the design position. The newly implanted steel bar 4 is anchored with anchor bar glue, and the insertion depth of the newly implanted steel bar 4 is 80% of the thickness of the cast-in-place bottom plate 3.
[0037] When the two rows of exposed steel bars 4 of the embedded steel bars 4 in the previously poured bottom slab 3 of a 2m bay shift as a whole in one direction, all the straightening holes 11 of the inspection frame plate can pass through and sleeve the exposed steel bars 4 at this time. However, the joint gap between two adjacent precast component side walls will change, either increasing or decreasing, which will affect the installation of the precast side wall components and the normal progress of the next construction step. Therefore, before using the inspection frame plate to inspect the straightening holes 11 of the exposed steel bars 4, it should be checked whether the exposed steel bars 4 are in a plumb state, and whether the plumbness of the exposed steel bars 4 in the canal axis direction and the vertical axis direction meets the requirements. When the exposed steel bars 4 are in a plumb state, then use the inspection frame plate to inspect the straightening holes 11 of the exposed steel bars 4 until all are qualified. The plumbness deviation of the exposed steel bars 4 in the canal axis direction and the vertical axis direction should be less than ±2mm.
[0038] The above-described embodiments are only the preferred embodiments of the present invention, and do not limit the scope of implementation of the present invention. Therefore, any equivalent changes or modifications made according to the structure, features, and principles described in the scope of the present invention patent should be included within the scope of the present invention's patent application.
Claims
1. A pre-buried steel bar inspection frame plate, used for inspecting and adjusting the position and verticality of steel bars (4) on a pre-cast base plate (3), characterized in that: The invention comprises a plurality of orifice plates (1) arranged in parallel, wherein an intermediate frame (2) is arranged between the plurality of orifice plates (1), and the orifice plates (1) are provided with straightening holes (11) matching with steel bars (4), and a gap exists between the inner wall of the straightening hole (11) and the outer wall of the steel bars (4); the intermediate frame (2) is in a multi-grid shape, and is used to support the orifice plates (1).
2. The embedded steel bar inspection frame plate according to claim 1, characterized in that: The orifice plate (1) has two layers.
3. The embedded steel bar inspection frame plate according to claim 1, characterized in that: The orifice plate (1) is in the shape of a rectangular plate, and a row of straightening holes (11) is provided at positions close to both sides of the plate in the long side direction of the orifice plate (1).
4. The embedded steel bar inspection frame plate according to claim 1, characterized in that: The straightening hole (11) is circular, and the diameter of the straightening hole (11) is greater than the diameter of the steel bar (4) and less than or equal to the diameter of the steel bar sleeve.
5. The embedded steel bar inspection frame plate according to claim 1, characterized in that: The length and width of the intermediate stand frame (2) are the same as the length and width of the orifice plate (1).
6. The embedded steel bar inspection frame plate according to claim 1, characterized in that: The intermediate frame (2) comprises at least three transverse plates (21) and at least three longitudinal plates (22), wherein the transverse plates (21) and the longitudinal plates (22) are perpendicular to each other, and the transverse plates (21) and the longitudinal plates (22) are arranged in an alternating manner with the straightening holes (11).
7. The embedded steel bar inspection frame plate according to claim 6, characterized in that: The length of the transverse plate (21) is greater than that of the longitudinal plate (22); a first notch (211) is provided at the bottom of the transverse plate (21); a second notch (221) is provided at the top of the longitudinal plate (22); the first notch (211) matches the second notch (221).
8. The embedded steel bar inspection frame plate according to claim 7, characterized in that: The height of the first notch (211) is one quarter of the height of the middle vertical frame (2), and the height of the second notch (221) is three quarters of the height of the middle vertical frame (2).