An integral steel formwork suitable for arc-shaped guardrails of viaducts

Abstract

The utility model relates to an integral steel formwork suitable for arc-shaped guardrails of viaducts, comprising an outer formwork, an inner formwork, and tension bolts. The bottom of the outer formwork is installed on the bridge deck with expansion bolts, the bottom of the inner formwork is installed on the bridge deck with expansion bolts, two adjacent outer formworks are connected with a first bolt and a first nut that are screwed together, two adjacent inner formworks are connected with a second bolt and a second nut that are screwed together, the top of the outer formwork and the top of the inner formwork are connected with tension bolts, and a casting trough for casting the arc-shaped guardrails of viaducts is formed between the outer formwork and the inner formwork. The beneficial effects are: the integral steel formwork has a reasonable structural design, is convenient for manufacturing and reuse, is convenient for connecting the outer formwork and the inner formwork to the bridge deck, is convenient for connecting the outer formwork and the inner formwork, and is convenient for connecting adjacent outer formworks or adjacent inner formworks, thereby facilitating the installation of the integral steel formwork.

Description

Technical Field

[0001] The utility model relates to the field of steel formwork, in particular to an integral steel formwork suitable for arc-shaped guardrails of viaducts. Background Art

[0002] As a bridge enclosure protection structure with strong functionality and high appearance quality requirements, the installation and fixation of the formwork is a key link in the construction process of the anti-collision guardrail. For the anti-collision guardrail, due to its own shape and the characteristics of the concrete material, the curvilinear beauty of the structure itself needs to be reflected, and the processing and installation of the formwork face many challenges. Utility Model Content

[0003] The purpose of the utility model is to overcome the above problems existing in the prior art and to provide an integral steel formwork suitable for arc-shaped guardrails of viaducts.

[0004] In order to achieve the above technical objectives and the above technical effects, the present invention is implemented through the following technical solutions:

[0005] A whole steel formwork suitable for arc-shaped guardrails of viaducts, comprising an outer formwork, an inner formwork, and tension bolts. The bottom of the outer formwork is installed on the bridge deck with expansion bolts, and the bottom of the inner formwork is installed on the bridge deck with expansion bolts. Two adjacent outer formworks are connected by screwing together first bolts and first nuts, and two adjacent inner formworks are connected by screwing together second bolts and second nuts. The top of the outer formwork and the top of the inner formwork are connected by tension bolts, and a casting trough for casting the arc-shaped guardrails of viaducts is formed between the outer formwork and the inner formwork.

[0006] Among them, the outer formwork includes an outer steel panel, an outer steel upright, an outer steel beam, and an outer lifting ear. A plurality of outer steel uprights parallel to the left and right and a plurality of outer steel beams parallel to the top and bottom are welded on the back of the outer steel panel. The outer steel uprights and the outer steel beams are perpendicular to each other. A plurality of first mounting holes for the tail of the first bolt to pass through are opened on the outer steel uprights at both ends of the outer steel panel. A plurality of evenly distributed outer lifting ears are welded on the outer steel beam at the top of the outer steel panel. A plurality of first circular holes for the expansion bolts to pass through are opened on the outer steel beam at the bottom of the outer steel panel. A first U-shaped groove for the tension bolt to pass through is arranged on the top of the outer lifting ear.

[0007] Furthermore, a first inclined slope is provided on the upper portion of the outer steel panel.

[0008] Furthermore, an outer reinforcing steel rib is fixedly connected to the outer steel upright pole located on the same vertical line as the outer lifting ear.

[0009] Among them, the inner formwork includes an inner steel panel, an inner steel upright, an inner steel beam, and an inner lifting ear. A plurality of inner steel uprights parallel to the left and right and a plurality of inner steel beams parallel to the top and bottom are welded on the back of the inner steel panel. The inner steel uprights and the inner steel beams are perpendicular to each other. A plurality of second mounting holes for the tail of the second bolt to pass through are opened on the inner steel uprights located at both ends of the inner steel panel. A plurality of evenly distributed inner lifting ears are welded on the inner steel beam located at the top of the inner steel panel. A plurality of second circular holes for the expansion bolts to pass through are opened on the inner steel beam located at the bottom of the inner steel panel. A second U-shaped groove for the tension bolts to pass through is arranged on the top of the inner lifting ear.

[0010] Furthermore, a second inclined slope is provided at the lower portion of the inner steel panel, and a circular arc surface curved toward the front direction of the inner steel panel is provided at the top of the inner steel panel.

[0011] Furthermore, a lamp trough forming channel steel for forming a lamp trough on the inner side surface of the guardrail is fixedly connected to the middle part of the front side of the inner steel panel.

[0012] Furthermore, an inner reinforcing steel rib is fixedly connected to the inner steel upright pole located on the same vertical line as the inner lifting ear.

[0013] Wherein, the tension bolt comprises a screw rod, two washers, and two third nuts. A washers are respectively mounted at both ends of the screw rod, a third nut is respectively mounted at both ends of the screw rod, and the two washers are located between the two third nuts.

[0014] The beneficial effects of the utility model are: the integral steel formwork structure is reasonably designed, convenient to manufacture and reuse; it is convenient to connect the outer formwork and the inner formwork to the bridge deck, to connect the outer formwork and the inner formwork, and to connect adjacent outer formworks or adjacent inner formworks, thereby facilitating the installation of the integral steel formwork. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of the present application. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0016] Figure 1 It is a structural schematic diagram of the side view of the integral steel formwork in the utility model;

[0017] Figure 2 It is a structural schematic diagram of the back side of the middle and outer side templates of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the back side of the inner template in the utility model;

[0019] Explanation of the numbers in the figure: outer formwork 1, outer steel panel 11, outer steel upright 12, outer steel beam 13, outer reinforced steel rib 14, outer lifting ear 15, first U-shaped groove 151, first mounting hole 16, first slope 17, inner formwork 2, inner steel panel 21, inner steel upright 22, inner steel beam 23, inner reinforced steel rib 24, inner lifting ear 25, second U-shaped groove 251, lamp trough forming channel steel 26, second mounting hole 27, second slope 28, arc surface 29, tension bolt 3, screw 31, gasket 32, third nut 33, expansion bolt 4, casting trough 5. DETAILED DESCRIPTION

[0020] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0021] like Figures 1 to 3 As shown, an integral steel formwork suitable for an elevated bridge arc guardrail includes an outer formwork 1, an inner formwork 2, and tension bolts 3.

[0022] The outer formwork 1 includes an outer steel panel 11, an outer steel upright 12, an outer steel beam 13, and an outer lifting lug 15. A plurality of outer steel uprights 12 parallel to the left and right and a plurality of outer steel beams 13 parallel to the top and bottom are welded on the back of the outer steel panel 11. The outer steel uprights 12 and the outer steel beams 13 are perpendicular to each other. A plurality of evenly distributed outer lifting lugs 15 are welded on the outer steel beam 13 located at the top of the outer steel panel 11. A first U-shaped groove 151 for the tension bolts to pass through is provided on the top of the outer lifting lug 15; an inclined first slope 17 is provided on the upper part of the outer steel panel 11; an outer reinforcing steel rib 14 is fixedly connected to the outer steel upright 12 located on the same vertical line as the outer lifting lug 15 to improve the strength of the outer formwork 1.

[0023] The inner formwork 2 includes an inner steel panel 21, an inner steel upright 22, an inner steel beam 23, and an inner lifting lug 25. A plurality of inner steel uprights 22 parallel to each other and a plurality of inner steel beams 23 parallel to each other are welded on the back of the inner steel panel 21. The inner steel uprights 22 and the inner steel beams 23 are perpendicular to each other. A plurality of evenly distributed inner lifting lugs 25 are welded on the inner steel beam 23 located at the top of the inner steel panel 21. A second U-shaped groove 251 for the tension bolts to pass through is provided at the top of the inner lifting lug 25; an inclined second slope 28 is provided at the lower part of the inner steel panel 21, and an arc surface 29 bent toward the front direction of the inner steel panel is provided at the top of the inner steel panel 21; an inner reinforcing steel rib 24 is fixedly connected to the inner steel upright 22 located on the same vertical line as the inner lifting lug 25 to improve the strength of the inner formwork 2.

[0024] The bottom of the outer template 1 is installed on the bridge deck by using expansion bolts 4 , and a plurality of first circular holes for the expansion bolts 4 to pass through are provided on the outer steel cross beam 13 located at the bottom of the outer steel panel 11 .

[0025] The bottom of the inner formwork 2 is installed on the bridge deck by using expansion bolts 4, and a plurality of second circular holes for the expansion bolts to pass through are provided on the inner steel cross beam 23 located at the bottom of the inner steel panel 21.

[0026] Two adjacent outer templates 1 are connected by screwing first bolts and first nuts. The outer steel uprights 12 at both ends of the outer steel panels 11 are provided with a plurality of first mounting holes 16 for the tails of the first bolts to pass through.

[0027] Two adjacent inner templates 2 are connected by second bolts and second nuts screwed together, and a plurality of second mounting holes 27 for the tails of the second bolts to pass through are provided on the inner steel uprights 22 located at both ends of the inner steel panel 21.

[0028] The top of the outer formwork 1 and the top of the inner formwork 2 are connected by tension bolts 3, which include a screw rod 31, two washers 32, and two third nuts 33. A washer 32 is mounted on each end of the screw rod 31, and a third nut 33 is mounted on each end of the screw rod 31, and the two washers 32 are located between the two third nuts 33.

[0029] A casting trough 5 for casting the arc-shaped guardrail of the viaduct is formed between the outer formwork 1 and the inner formwork 2.

[0030] A lamp trough forming channel steel 26 for forming a lamp trough on the inner side surface of the guardrail is fixedly connected to the middle of the front side of the inner steel panel 21, so as to form a lamp trough for installing the light strip on the inner side surface of the guardrail after casting, so that the lamp trough can be formed in one step when the guardrail is cast.

[0031] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments, and the above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements fall within the scope of the utility model to be protected.

Claims

1. An integral steel formwork suitable for arc-shaped guardrails of viaducts, characterized in that: It includes an outer formwork, an inner formwork, and tension bolts. The bottom of the outer formwork is installed on the bridge deck with expansion bolts, and the bottom of the inner formwork is installed on the bridge deck with expansion bolts. Two adjacent outer formworks are connected by a first bolt and a first nut that are screwed together, and two adjacent inner formworks are connected by a second bolt and a second nut that are screwed together. The top of the outer formwork and the top of the inner formwork are connected by tension bolts, and a casting trough for casting the arc guardrail of the viaduct is formed between the outer formwork and the inner formwork.

2. The integral steel formwork according to claim 1 is characterized in that: The outer formwork includes an outer steel panel, an outer steel upright, an outer steel beam, and an outer lifting ear. A plurality of outer steel uprights parallel to the left and right and a plurality of outer steel beams parallel to the top and bottom are welded on the back of the outer steel panel. The outer steel uprights and the outer steel beams are perpendicular to each other. A plurality of first mounting holes for the tail of the first bolt to pass through are provided on the outer steel uprights at both ends of the outer steel panel. A plurality of evenly distributed outer lifting ears are welded on the outer steel beam at the top of the outer steel panel. A plurality of first circular holes for the expansion bolts to pass through are provided on the outer steel beam at the bottom of the outer steel panel. A first U-shaped groove for the tension bolt to pass through is provided on the top of the outer lifting ear.

3. The integral steel formwork according to claim 2 is characterized in that: The upper part of the outer steel panel is provided with a first inclined slope.

4. The integral steel formwork according to claim 2 is characterized in that: An outer reinforcing steel rib is fixedly connected to the outer steel upright pole which is located on the same vertical line as the outer lifting ear.

5. The integral steel formwork according to claim 1 is characterized in that: The inner formwork includes an inner steel panel, an inner steel upright, an inner steel beam, and an inner lifting ear. A plurality of inner steel uprights parallel to the left and right and a plurality of inner steel beams parallel to the top and bottom are welded on the back of the inner steel panel. The inner steel uprights and the inner steel beams are perpendicular to each other. A plurality of second mounting holes for the tail of the second bolt to pass through are provided on the inner steel uprights at both ends of the inner steel panel. A plurality of evenly distributed inner lifting ears are welded on the inner steel beam at the top of the inner steel panel. A plurality of second circular holes for the expansion bolts to pass through are provided on the inner steel beam at the bottom of the inner steel panel. A second U-shaped groove for the tension bolts to pass through is provided on the top of the inner lifting ear.

6. The integral steel formwork according to claim 5 is characterized in that: The lower part of the inner steel panel is provided with an inclined second slope surface, and the top of the inner steel panel is provided with an arc surface bent toward the front direction of the inner steel panel.

7. The integral steel formwork according to claim 5 is characterized in that: A lamp trough forming channel steel for forming a lamp trough on the inner side surface of the guardrail is fixedly connected to the middle part of the front side of the inner steel panel.

8. The integral steel formwork according to claim 5 is characterized in that: An inner reinforced steel rib is fixedly connected to the inner steel upright pole which is located on the same vertical line as the inner lifting ear.

9. The integral steel formwork according to claim 1 is characterized in that: The tension bolt comprises a screw rod, two washers, and two third nuts. A washers is respectively mounted on both ends of the screw rod, a third nut is respectively mounted on both ends of the screw rod, and the two washers are located between the two third nuts.

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