Positioning device for controlling thickness of retaining wall, spacing of steel bars and thickness of protective layer of bridge

Abstract

The utility model discloses a positioning device for controlling the thickness of a retaining wall, the spacing of steel bars and the thickness of a protective layer of a bridge, which comprises a group of mutually parallel angle steels, and the horizontal parts of the two angle steels are positioned on the same plane and are respectively provided with a plurality of elliptical positioning clamping grooves; an adjusting device is arranged between the two pieces of angle steel and located on the horizontal portion of the angle steel. A plurality of preformed holes are formed in the vertical parts of the two pieces of angle steel, and anchoring devices are arranged in the preformed holes; steel bar protection layer limiting devices are arranged on the inner side faces of the horizontal parts of the two steel angles, clamping groove structures for limiting the fair-faced timber formwork are formed between the steel bar protection layer limiting devices and the vertical parts of the steel angles, and the fair-faced timber formwork is fixed through anchoring devices. The thickness of the retaining wall, the distance between the reinforcing steel bars and the thickness of a protective layer can be effectively controlled, and the problems that the distance between the reinforcing steel bars and the protective layer are inaccurate are successfully solved.

Description

Technical Field

[0001] The utility model relates to the field of reinforced concrete construction, in particular to a positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer. Background Art

[0002] During the construction process, the construction of general steel skeletons often uses welded positioning bars to control the steel bar protective layer. However, this method has obvious disadvantages. On the one hand, although the thickness of the steel bar protective layer can be determined to a certain extent, the spacing between the steel bars cannot be effectively controlled. In actual construction operations, due to the influence of various factors, the position of the steel bars may shift, resulting in uneven spacing, which not only affects the overall structural stability of the steel skeleton, but may also bring many hidden dangers to subsequent engineering construction. On the other hand, during the reinforcement process, this method is prone to problems such as overall skewness of the steel bars. The strength and stability of the welded positioning bars may be affected by factors such as the construction environment and welding quality. Once a problem occurs, the entire steel skeleton will be skewed, seriously affecting the construction quality.

[0003] Furthermore, construction defects in the steel reinforcement cover can lead to a range of serious consequences. Uneven or damaged thickness of the reinforcement cover alters the contact between the reinforcement and the external environment during concrete pouring and setting, potentially causing rust and corrosion. These defects can also lead to cracking on the concrete surface. During the concrete's contraction and expansion, the uneven reinforcement cover creates uneven stress distribution within the concrete, causing cracks. These cracks not only affect the appearance of the concrete structure but also reduce its durability and load-bearing capacity, making it difficult to ensure the stability and reliability of construction quality. Utility Model Content

[0004] The purpose of the utility model is to provide a positioning device for controlling the thickness of bridge retaining walls, the spacing between steel bars and the thickness of the protective layer, which can solve the problems of the existing steel skeleton construction using the welding positioning bar method, which has the problems of being unable to control the spacing between steel bars, easily causing the overall skewness of steel bars, and defects in the steel skeleton protective layer easily causing concrete cracks.

[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions:

[0006] A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer, comprising a group of mutually parallel angle steels, wherein the horizontal portions of the two angle steels are located in the same plane and are both provided with a plurality of elliptical positioning slots for positioning the steel bars; an adjustment device for controlling the thickness of the retaining wall is provided at the horizontal portions of the angle steels between the two angle steels; a plurality of reserved holes are provided at the vertical portions of the two angle steels, and anchoring devices are provided in the reserved holes; a plurality of steel bar protective layer limiting devices are provided on the inner side surfaces of the horizontal portions of the two angle steels and at positions corresponding to the reserved holes, and are parallel to the vertical portions of the angle steels; a slot structure for limiting a plain wooden formwork is formed between the steel bar protective layer limiting devices and the vertical portions of the angle steels, and the plain wooden formwork is fixed by the anchoring devices.

[0007] Furthermore, the adjustment device adopts a rectangular steel plate of 560mm*50mm*4mm, one end of the rectangular steel plate is welded and fixed to the horizontal part of the angle steel on one side, and the other end of the rectangular steel plate is connected to the horizontal part of the angle steel on the other side through a No. 1 bolt and a No. 1 nut, and a long hole is provided on the rectangular steel plate for adjusting the fixing position of the No. 1 bolt and the No. 1 nut to adjust the thickness of the retaining wall.

[0008] Furthermore, the No. 1 nut is welded to the inner side of the horizontal portion of the angle steel, and the No. 1 bolt passes through the long hole and is threadedly connected to the No. 1 nut.

[0009] Furthermore, the anchoring device includes a No. 2 nut and a No. 2 bolt. The No. 2 nut overlaps with the reserved hole position and is welded to the outside of the angle steel. The No. 2 bolt and the No. 2 nut are threadedly connected.

[0010] Furthermore, the steel bar protective layer limiting device adopts a 100mm*30mm*5mm steel plate and is welded to the angle steel.

[0011] Furthermore, the steel bar protective layer limiting device is set at 45 mm of the vertical part of the angle steel.

[0012] Furthermore, among the several reserved holes, the reserved holes on both sides are located 500 mm away from the end of the angle steel, the middle reserved hole is located at the center of the angle steel, and the remaining reserved holes are arranged at equal intervals.

[0013] Furthermore, the width of the vertical portion of the angle steel is greater than the width of the horizontal portion of the angle steel, and the specification of the angle steel is "L70*45*4".

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The utility model positions the steel bars by providing a number of elliptical positioning slots, ensuring that the steel bars are accurately positioned and that the spacing meets the design requirements. An adjustment device is provided between two angle steels to control the thickness of the retaining wall. A slot structure is formed between a steel bar protective layer limiting device and the vertical portion of the angle steel to limit the position of the clear water wooden formwork. The clear water wooden formwork is fixed by an anchoring device and a steel bar protective layer limiting device. In this way, the distance between the steel bars and the clear water wooden formwork is the thickness of the steel bar protective layer, thereby successfully solving the problem of inaccurate retaining wall thickness, steel bar spacing, and protective layer thickness. The device has a simple structure, is easy to operate, and is very convenient to install and disassemble. It is suitable for use on the construction site, can speed up the binding of the steel bar skeleton, and significantly improve the construction accuracy of the steel bar skeleton.

[0016] Furthermore, the utility model uses a rectangular steel plate as an adjustment device, opens a long hole on the rectangular steel plate, and accurately adjusts the distance between the top of the plain wooden formwork on both sides by adjusting the position of the No. 1 bolt in the long hole and fixing it with the No. 1 nut, thereby ensuring that the thickness of the retaining wall meets the design requirements when pouring concrete in the plain wooden formwork, reducing manual installation errors.

[0017] Furthermore, the utility model uses a 100mm*30mm*5mm steel plate as a steel bar protective layer limiting device. The vertical part of the angle steel at the welding position of the steel plate forms a slot structure to fix the plain wooden formwork, and the plain wooden formwork is fixed by tightening the No. 2 bolt, which can ensure the accuracy of the steel bar protective layer thickness, improve construction accuracy and efficiency, and enhance the overall stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a top view of the utility model;

[0019] Figure 2 for Figure 1 A cross-sectional side view at AA in FIG;

[0020] Figure 3 for Figure 1 A cross-sectional side view at BB in FIG;

[0021] In the figure: 1-angle steel; 2-positioning slot; 3-rectangular steel plate; 4-long hole; 5-No. 1 bolt; 6-No. 1 nut; 7-reserved hole; 8-No. 2 nut; 9-No. 2 bolt; 10-steel plate; 11-plain wooden formwork; 12-rebar. DETAILED DESCRIPTION

[0022] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] like Figure 1 、 2As shown in Figure 3, the positioning device for controlling the thickness of the bridge retaining wall, the spacing between steel bars and the thickness of the protective layer described in this embodiment includes a group of parallel angle steels 1, the width of the horizontal part of the angle steel 1 is greater than the width of the horizontal part of the angle steel 1, the specification of the angle steel 1 is "L70*45*4", the horizontal parts of the two angle steels 1 are located in the same plane and are both provided with a plurality of elliptical positioning grooves 2 for positioning the steel bars 12, the depth of the positioning grooves 2 in the horizontal part of the angle steel 1 is 10 mm, the long diameter is 30 mm, the center distance between the two positioning grooves 2 is 150 mm, and it can be applicable to various commonly used types of threaded steel and round steel.

[0024] An adjusting device for controlling the thickness of the retaining wall is provided between the two angle steels 1 at the horizontal part of the angle steel 1. The adjusting device adopts a rectangular steel plate 3 of 560mm*50mm*4mm. One end of the rectangular steel plate 3 is welded and fixed to the horizontal part of the angle steel 1 on one side, and the other end of the rectangular steel plate 3 is connected to the horizontal part of the angle steel 1 on the other side by a No. 1 bolt 5 and a No. 1 nut 6, and a long hole 4 is opened on the rectangular steel plate 3, wherein the No. 1 bolt 5 adopts an M10*30 bolt, and the No. 1 nut 6 is welded to the inner side of the horizontal part of the angle steel 1. The No. 1 bolt 5 passes through the long hole 4 and is threadedly connected with the No. 1 nut 6 for tightening or loosening, and by adjusting the position of the No. 1 bolt 5 in the long hole 4 and fixing it with the No. 1 nut 6, the thickness of the retaining wall can be adjusted and can be reliably fixed to ensure that the size of the retaining wall is accurate and stable during construction.

[0025] A number of reserved holes 7 are provided in the vertical parts of the two angle steels 1, wherein the reserved holes 7 on both sides are located 500 mm away from the end of the angle steel 1, the middle reserved hole 7 is located at the center of the angle steel 1, and the remaining reserved holes 7 are arranged at equal intervals. Anchoring devices are provided in the reserved holes 7, and the anchoring devices include No. 2 nuts 8 and No. 2 bolts 9, wherein the No. 2 bolts 9 are M16*50 bolts. The No. 2 nuts 8 overlap with the reserved holes 7 and are welded to the outside of the angle steel 1. The No. 2 bolts 9 and the No. 2 nuts 8 are threadedly connected for tightening or loosening.

[0026] Several steel bar protection layer limiting devices parallel to the vertical part of the angle steel 1 are provided on the inner side surfaces of the horizontal parts of the two angle steels 1 and at the positions corresponding to the reserved holes 7. The steel bar protection layer limiting devices adopt 100mm*30mm*5mm steel plates 10 and are welded at 45mm of the horizontal part of the angle steel 1. A slot structure is formed between the steel bar protection layer limiting device and the vertical part of the angle steel 1, which is used to limit the plain wooden formwork 11. The top of the plain wooden formwork 11 is against the inner side of the horizontal part of the angle steel 1, and the plain wooden formwork 11 is fixed by tightening the No. 2 bolt 9. In this way, the distance between the steel bar 12 and the plain wooden formwork 11 is the thickness of the steel bar protection layer, thereby ensuring the accuracy of the steel bar protection layer thickness, improving construction accuracy and efficiency, and enhancing the overall stability of the device.

[0027] Working principle: First, after the construction workers have laid the foundation, a steel frame has been pre-installed on the foundation, and plain wooden formwork 11 has been installed on both sides of the outer periphery of the steel frame. At this time, the positioning device of the present invention is used to check the spacing of the steel bars 12 and ensure that the thickness of the retaining wall and the thickness of the protective layer meet the standards.

[0028] During the reinforcement construction of the steel skeleton, first, the steel bar 12 is accurately inserted into the positioning slot 2 to ensure that the steel bar position is accurate and the spacing meets the design requirements, thereby offsetting the error during manual installation. Then, the clear water wooden formwork 11 is limited to the slot structure between the steel bar protective layer limiting device and the vertical part of the angle steel 1. By tightening the No. 2 bolt 9, the No. 2 bolt 9 is fastened to the No. 2 nut 8 welded on the angle steel 1, thereby fastening the clear water wooden formwork 11 to the positioning device. In this way, the distance between the steel bar 12 and the clear water wooden formwork 11 is the thickness of the steel bar protective layer. After the clear water wooden formwork 11 is installed, there will be more or less installation errors between the templates on both sides. At this time, by adjusting the position of the No. 1 bolt 5 in the long hole 4, the spacing between the tops of the clear water wooden formwork 11 on both sides can be accurately adjusted. After adjusting to the appropriate position, tighten the No. 1 bolt 5 so that it is fastened to the No. 1 nut 6 welded on the inside of the horizontal part of the angle steel 1, thereby ensuring that the thickness of the retaining wall meets the design requirements when pouring concrete in the clear water wooden formwork 11, reducing manual installation errors. Once this device is fixed, the entire reinforcement construction process is completed. During the concrete pouring process, the precise positioning and firm fixation of the positioning device can effectively ensure that the thickness of the retaining wall, the spacing of the steel bars 12, and the thickness of the protective layer strictly meet the design requirements, ensuring stable and reliable construction quality.

Claims

1. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer, characterized in that: The invention comprises a set of mutually parallel angle steels (1), wherein the horizontal parts of the two angle steels (1) are located in the same plane and are both provided with a plurality of elliptical positioning slots (2) for positioning steel bars (12); and an adjusting device for controlling the thickness of the retaining wall is provided between the two angle steels (1) and located on the horizontal part of the angle steels (1); A plurality of reserved holes (7) are provided on the vertical parts of the two angle steels (1), and anchoring devices are provided in the reserved holes (7); a plurality of steel bar protective layer limiting devices are provided on the inner side surfaces of the horizontal parts of the two angle steels (1) and at positions corresponding to the reserved holes (7) and are parallel to the vertical parts of the angle steels (1); a slot structure for limiting the clear water wooden template (11) is formed between the steel bar protective layer limiting devices and the vertical parts of the angle steels (1), and the clear water wooden template (11) is fixed by the anchoring devices.

2. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer according to claim 1, characterized in that: The adjusting device adopts a rectangular steel plate (3) with a size of 560mm*50mm*4mm. One end of the rectangular steel plate (3) is welded and fixed to the horizontal part of the angle steel (1) on one side. The other end of the rectangular steel plate (3) is connected to the horizontal part of the angle steel (1) on the other side through a No. 1 bolt (5) and a No. 1 nut (6). In addition, a long hole (4) is provided on the rectangular steel plate (3) for adjusting the fixing position of the No. 1 bolt (5) and the No. 1 nut (6) to adjust the thickness of the retaining wall.

3. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer according to claim 2, characterized in that: The No. 1 nut (6) is welded to the inner side of the horizontal portion of the angle steel (1), and the No. 1 bolt (5) passes through the long hole (4) and is threadedly connected to the No. 1 nut (6).

4. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer according to claim 2, characterized in that: The anchoring device comprises a No. 2 nut (8) and a No. 2 bolt (9); the No. 2 nut (8) is welded to the outside of the angle steel (1) after overlapping with the reserved hole (7); and the No. 2 bolt (9) and the No. 2 nut (8) are threadedly connected.

5. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer according to claim 4, characterized in that: The steel bar protective layer limiting device adopts a 100mm*30mm*5mm steel plate (10) and is welded to the angle steel (1).

6. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer according to claim 5, characterized in that: The steel bar protective layer limiting device is arranged at 45 mm from the horizontal portion of the angle steel (1).

7. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars, and the thickness of a protective layer according to any one of claims 1 to 6, characterized in that: Among the plurality of the reserved holes (7), the reserved holes (7) on both sides are located 500 mm away from the end of the angle steel (1), the middle reserved hole (7) is located at the center of the angle steel (1), and the remaining reserved holes (7) are arranged at equal intervals.

8. A positioning device for controlling the thickness of a bridge retaining wall, the spacing between steel bars and the thickness of a protective layer according to claim 7, characterized in that: The width of the vertical portion of the angle steel (1) is greater than the width of the horizontal portion of the angle steel (1), and the specification of the angle steel (1) is "L70*45*4".

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