Steel-concrete composite beam cast-in-place concrete formwork supporting system

Abstract

The utility model belongs to the technical field of engineering construction, and particularly relates to a steel-concrete composite beam cast-in-place concrete formwork supporting system which comprises an edge beam supporting structure and a middle beam supporting structure. The included angle between the horizontal supporting rod and the side supporting rod of the triangular supporting frame is equal to the included angle between the edge beam and the flange plate, and the horizontal supporting rod and the flange plate of the edge beam are connected together through the long bolt. The middle beam supporting structure comprises a long horizontal beam, long screws penetrate through the two ends of the long horizontal beam respectively, the long screws upwards penetrate through flange plates of the middle beam, and nuts are arranged on the long screws. According to the formwork supporting system, holes do not need to be punched in beam bodies of the edge beams and the middle beams, the supporting structure can be rapidly installed through the long bolts and the long screws, and installation is rapid and convenient; the height of the supporting system can be adjusted, and then the height of the supported formwork is adjusted; the angle of the boundary beam supporting structure is matched with the shape of the boundary beam, and better supporting force is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to engineering construction technical field especially relates to a steel -mixing combined beam cast -in -situ concrete formwork support system. BACKGROUND

[0002] Steel-mixing combined beam, also known as steel-concrete composite beam, is a new structural type developed on the basis of steel structure and concrete structure. Steel-mixing combined structure can fully exert the superior performance of steel structure and concrete, and the structure is lighter than pure concrete structure, has more significant rigidity and stability than pure steel structure, and is lower in cost. It has the advantages of steel structure and concrete structure, and has significant technical and economic benefits and social benefits.

[0003] The steel-mixing combined beam bridge deck is a cast-in-place reinforced concrete structure, which is formed by pouring concrete with the bridge deck. Before pouring concrete, full support is set up, then wood formwork is installed, and finally concrete is poured. Since the bridge height is high, and the outer part of the side beam and the middle beam is a cantilevered concrete pouring structure of the bridge deck, the construction of the scaffold and the formwork for pouring the bridge deck panel needs high-altitude operation, which is labor-intensive and has high safety risks. The installation and removal of the scaffold require a large number of workers and a long working time, and the cost of repeatedly renting the scaffold is high. At present, there are also some cantilever support structures that do not use scaffolds, but most of them need to drill holes in the side beam or the middle beam body to install auxiliary support structures for further supporting the cantilever support structure. This not only damages the beam structure, but also complicates the installation process. SUMMARY

[0004] The problem to be solved by the present application is to overcome the shortcomings of the background art and provide a steel-mixing combined beam cast-in-place concrete formwork support system.

[0005] The present application is achieved by the following technical solutions:

[0006] A steel-mixing combined beam cast-in-place concrete formwork support system includes a side beam support structure and a middle beam support structure. The side beam support structure includes a triangular support frame, which includes a horizontal support rod and a side support rod. The angle between the horizontal support rod and the side support rod is equal to the angle between the side beam and the flange plate. A diagonal support rod is connected between the horizontal support rod and the side support rod. The horizontal support rod is provided with a hole near the flange plate of the side beam. An opening corresponding to the hole is provided on the flange plate of the side beam. A long bolt connects the horizontal support rod and the flange plate of the side beam by passing through the hole and the opening. A nut is provided on the long bolt. The middle beam support structure includes a long horizontal beam, the length of which is greater than the distance between two adjacent middle beam flange plates. Long screws pass through the long horizontal beam at both ends. The long screws pass through the flange plates of the middle beams upward. Nuts are provided on the long screws.

[0007] Preferably, the triangular support frame is internally provided with vertical ribbed bars, oblique ribbed bars and horizontal ribbed bars.

[0008] Preferably, the long horizontal beam comprises two triangular steels, a long screw rod passing through the gap between the two triangular steels, and a baffle plate provided at the bottom of the triangular steel, the upper part of the triangular steel and the upper part of the flange plate of the middle beam, the baffle plate being larger than the gap between the two triangular steels and sleeved on the long screw rod.

[0009] The template support system of the present application does not need to punch holes on the edge beam and the middle beam, only needs to punch holes on the flange plate, and can quickly install the support structure through long bolts and long screw rods, which is fast and convenient; the support system can be adjusted in height, thereby adjusting the height of the template support; the angle of the edge beam support structure is matched with the shape of the edge beam, and has better support force. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a schematic diagram of the edge beam support structure of the present embodiment;

[0011] Figure 2 It is a schematic diagram of the edge beam support structure in use of the present embodiment;

[0012] Figure 3 It is a schematic diagram of the side surface structure of the middle beam support structure in use of the present embodiment;

[0013] Figure 4 It is a schematic diagram of the partial enlarged structure of the middle beam support structure of the present embodiment;

[0014] Figure 5 It is a schematic diagram of the three-dimensional structure of the middle beam support structure in use of the present embodiment;

[0015] Figure 6 It is a schematic diagram of the structure of the middle beam support structure of the present embodiment when the template is not laid.

[0016] In the figure, 1 is a horizontal support rod, 2 is a side support rod, 3 is an edge beam, 4 is a flange plate, 5 is an oblique support rod, 6 is a hole, 7 is a long bolt, 8 is a nut, 9 is a long horizontal beam, 10 is a middle beam, 11 is a long screw rod, 12 is a vertical ribbed bar, 13 is an oblique ribbed bar, 14 is a triangular steel, 15 is a baffle plate, 16 is a template, 17 is a square timber, and 18 is a horizontal ribbed bar. DETAILED DESCRIPTION

[0017] To make the purpose, technical scheme and advantages of the embodiments of the present application clearer, the technical scheme of the embodiments of the present application will be described clearly and completely below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments of the present application.

[0018] The embodiment includes a side beam support structure and a middle beam support structure, the side beam support structure is used to support the formwork 16 at the flange plate 4 of the side beam 3 of the steel-concrete composite beam, and the middle beam support structure is used to support the formwork 16 at the flange plate 4 of the middle beam 10 of the steel-concrete composite beam.

[0019] The side beam support structure includes a triangular support frame, the triangular support frame includes a horizontal support rod 1, a side support rod 2 and an inclined support rod 5, the two ends of the inclined support rod 5 are connected with the horizontal support rod 1 and the side support rod 2 respectively, and the three form a triangular support structure. The included angle between the horizontal support rod 1 and the side support rod 2 is equal to the included angle between the side beam 3 and the flange plate 4, that is, the horizontal support rod 1 is parallel to the flange plate 4 of the side beam 3, and the outer side of the side support rod 2 can be close to the side beam 3. Compared with the traditional right-angled triangular support structure, the triangular support frame of the embodiment has better support effect. In order to enhance the stability and support strength of the triangular support frame, the embodiment preferably provides a vertical ribbed bar 12, an inclined ribbed bar 13 and a horizontal ribbed bar 18 inside the triangular support frame. The horizontal support rod 1 is provided with a hole 6 on the side close to the flange plate 4 of the side beam 3, and a corresponding opening corresponding to the hole 6 is provided on the flange plate 4 of the side beam 3. One opening can be provided every 1m on the flange plate 4 of the side beam 3, the center of the opening is 20cm away from the outer edge of the flange plate 4, and then one triangular support frame is installed below each opening. A long bolt 7 with high strength is used to pass through the hole 6 and the opening to connect the horizontal support rod 1 and the flange plate 4 of the side beam 3, and a plurality of nuts 8 are arranged on the long bolt 7. During construction, one triangular support frame is installed every 1m, and during installation, the horizontal support rod 1 of the triangular support frame is located below the flange plate 4 of the side beam 3 and is parallel to the flange plate 4, the side support rod 2 of the triangular support frame is close to the outer web of the side beam 3, the long bolt 7 passes through the opening of the flange plate 4 and the hole 6 of the horizontal support rod 1, and the triangular support frame and the flange plate 4 are connected together by tightening the long bolt 7 through the nuts 8. In order to be more stable, the upper long bolt 7 of the flange plate 4 can be tightened by double nuts 8, the lower long bolt 7 of the flange plate 4 is tightened by single nut 8, and the lower long bolt 7 of the triangular support frame is tightened by double nuts 8. The square wood 17 is laid on the top of the triangular support frame, the horizontal distance between the square woods 17 is 20cm, the formwork 16 is placed on the top of the square wood 17, and the position of the formwork 16 can be adjusted by adjusting the position of the triangular support frame during installation, so that the upper surface of the formwork 16 is flush with the upper surface of the flange plate 4. The construction of the square wood 17 and the formwork 16 is a conventional process, which will not be described here. The embodiment realizes the support of the formwork 16 of the side beam 3 through the side beam support structure, only needs to punch holes on the flange plate 4 of the side beam 3, and does not need auxiliary support structure, so the installation is quick and the support effect is good.

[0020] The above-mentioned middle beam support structure comprises a long horizontal beam 9, which is located between two adjacent middle beams 10 and has a length greater than the distance between the flange plates 4 of the two adjacent middle beams 10. A long screw 11 is vertically arranged at each end of the long horizontal beam 9 and penetrates the flange plate 4 of the middle beam 10 upwards. A plurality of nuts 8 are arranged on the long screw 11, and the long horizontal beam 9 and the flange plate 4 of the middle beam 10 are fixed together by tightening the nuts 8. In the embodiment, the long horizontal beam 9 is assembled by two triangular steels 14, and the support area can be increased by using two triangular steels 14. The two triangular steels 14 are parallel and have a certain distance, i.e., a gap is formed between the two triangular steels 14, and the long screw 11 penetrates the gap. In addition, a blocking piece 15 is arranged at the bottom of the triangular steel 14, on the upper part of the triangular steel 14, and on the upper part of the flange plate 4 of the middle beam 10, and the blocking piece 15 is sleeved on the long screw 11. The size of the blocking piece 15 is greater than the gap between the two triangular steels 14, the blocking piece 15 at the bottom of the triangular steel 14 can support the two triangular steels 14, and the blocking piece 15 also has a gasket function. In the embodiment, an opening with a diameter of 20 mm is arranged on the flange plate 4 of the steel-concrete composite middle beam 10 every 1.5 m, and the center of the opening is 20 cm away from the edge of the flange plate 4 of the middle beam 10. A long horizontal beam 9 is arranged below each opening. The long screw 11 penetrates the flange plate 4 upwards, the position of the long screw 11 is adjusted so that the long horizontal beam 9 is located at a proper position, and then the nuts 8 are tightened. A square wood 17 is longitudinally arranged above the long horizontal beam 9, and the square wood 17 is perpendicular to the long horizontal beam 9. A formwork 16 is arranged on the square wood 17, and the formwork 16 is generally made of a bamboo plywood with a thickness of 15 mm. The formwork 16 is fixed on the square wood 17 by using steel nails. The formwork 16 is arranged tightly without gaps, and a sponge rubber strip is arranged between the formwork 16 and the flange plate 4 of the middle beam 10 to prevent slurry leakage. The position of the formwork 16 can be adjusted by the long screw 11, so that the upper surface of the formwork 16 is flush with the upper surface of the flange plate 4 of the middle beam 10. The middle beam support structure of the embodiment does not need to set up a scaffold to support the formwork 16 of the middle beam 10, and does not need to fix an auxiliary support structure. The height of the formwork 16 can be adjusted conveniently, the installation is fast, the labor intensity is reduced, the construction is fast, and the efficiency is high.

[0021] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them. Those skilled in the art should understand that the technical solutions described in the above embodiments can still be modified, or some technical features can be replaced by equivalents. These modifications or replacements do not change the essence of the corresponding technical solutions beyond the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A cast-in-situ concrete formwork support system for a steel-concrete composite beam, comprising a side beam support structure and a mid-beam support structure, characterized in that: The side beam support structure comprises a triangular support frame, the triangular support frame comprises a horizontal support rod (1), a side support rod (2), the included angle between the horizontal support rod (1) and the side support rod (2) is equal to the included angle between the side beam (3) and the flange plate (4), a diagonal support rod (5) is connected between the horizontal support rod (1) and the side support rod (2), the horizontal support rod (1) is provided with a hole (6) near the flange plate (4) of the side beam (3), the flange plate (4) of the side beam (3) is provided with an opening corresponding to the hole (6), a long bolt (7) passes through the hole (6) and the opening to connect the horizontal support rod (1) and the flange plate (4) of the side beam (3) together, and the long bolt (7) is provided with a nut (8); the middle beam support structure comprises a long horizontal beam (9), the length of the long horizontal beam (9) is greater than the distance between the flange plates (4) of two adjacent middle beams (10), long screw rods (11) pass through both ends of the long horizontal beam (9) respectively, the long screw rods (11) pass through the flange plates (4) of the middle beams (10) upwards, and the long screw rods (11) are provided with nuts (8).

2. The steel-concrete composite beam cast-in-place concrete formwork support system according to claim 1, characterized in that: The triangular support frame is internally provided with vertical ribbed bars (12), diagonal ribbed bars (13) and transverse ribbed bars (18).

3. The steel-concrete composite beam cast-in-place concrete formwork support system according to claim 1, characterized in that: The long horizontal beam (9) comprises two triangular steels (14), the long screw rods (11) pass through the gap between the two triangular steels (14), the bottom of the triangular steel (14), the upper part of the triangular steel (14) and the upper part of the flange plate (4) of the middle beam (10) are all provided with a baffle (15), the size of the baffle (15) is greater than the gap between the two triangular steels (14), and the baffle (15) is sleeved on the long screw rod (11).

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