Cast-in-place concrete bridge deck slab bottom die supporting device suitable for steel-concrete composite beam bridge

Abstract

The utility model discloses a cast-in-place concrete bridge deck slab bottom die supporting device suitable for a steel-concrete composite beam bridge, which comprises a supporting plate and supporting components symmetrically arranged below the supporting plate. Wherein the supporting plate is connected with the sliding column hinge base, and the sliding column hinge base, the friction disc and the ejector rod cover are connected in series through the sliding column hinge switch; an ejector rod turncap is sleeved with the ejector rod cover and fixedly connected with an ejector rod, the ejector rod is connected with a sleeve rod, the sleeve rod is connected with a base column hinge, and a magnetic base is arranged on the base column hinge. The sliding column hinge base is provided with an arc-shaped sliding way, the sliding column hinge base, the friction disc and the ejector rod cover are connected in series through the sliding column hinge switch based on the arc-shaped sliding way, and the sliding column hinge base is provided with a dial. According to the scheme, the posture of the supporting device can be adjusted according to the actual situation of the steel-concrete combined bridge, and finally a bottom die of a cast-in-place concrete bridge deck is erected on the supporting device. Compared with a traditional construction mode, the method is safe and reliable, does not damage a bridge structure, is convenient to construct, can be reused, is good in economical efficiency, and can adapt to different types of steel-concrete composite bridges.

Description

Technical Field

[0001] The utility model belongs to the field of bridge engineering construction, and particularly relates to a cast-in-place concrete bridge deck bottom formwork support device applicable to a steel-concrete composite beam bridge. Background Technique

[0002] Steel-concrete composite bridges utilize the physical and mechanical properties of steel and concrete materials, complement each other's advantages, and resist the relative slip at the interface between the steel beam and the concrete slab by setting shear connectors between the steel beam and the concrete slab, combining the two materials to form an integral structure. Composite structure bridges are widely used in bridge engineering due to advantages such as fast construction speed, low construction cost, and good integrity of the bridge deck.

[0003] The bridge deck of a steel-concrete composite bridge is usually constructed by prefabricating in a factory and hoisting on-site. In order to reduce the influence of concrete shrinkage on the steel-concrete composite structure, the bridge deck needs to be prefabricated at least 6 months in advance. However, in actual engineering construction, due to the short construction period, it is impossible to prefabricate the concrete bridge deck 6 months in advance, or when the bridge deck width changes, the design scheme also changes the prefabricated bridge deck to a cast-in-place reinforced concrete bridge deck. The steel structure part is usually an open channel steel beam or an I-shaped steel beam. If a steel bottom formwork is set on the top of the steel beam (below the concrete bridge deck) or a support is erected from the ground, both of these methods will undoubtedly increase the project cost, and the economic advantage of the steel-concrete composite beam bridge is no longer obvious. In the current construction process, for the situation of cast-in-place bridge deck, the hanging formwork method is usually adopted for construction, but the workload of the hanging formwork is large and the quality of the bottom formwork cannot be controlled. The formwork removal process is also extremely laborious and there are safety hazards. This requires us to explore a cast-in-place concrete bridge deck bottom formwork support device applicable to steel-concrete composite bridges to overcome the above difficulties. Summary of the Invention

[0004] In order to solve the above technical defects in the prior art, the utility model proposes a cast-in-place concrete bridge deck bottom formwork support device applicable to a steel-concrete composite bridge, which is safe and reliable compared with the traditional construction method, does not damage the bridge structure, is convenient for construction, can be reused, has good economy, and can adapt to different types of steel-concrete composite bridges.

[0005] The technical solution for realizing the purpose of the utility model is as follows:

[0006] A cast-in-place concrete bridge deck bottom formwork support device applicable to a steel-concrete composite beam bridge includes a support plate and a support assembly, and the support assembly is symmetrically arranged below the support plate.

[0007] Further, the support assembly includes a magnetic base, a base column hinge, a sleeve rod, a top rod, a top rod cap, a top rod cover, a sliding column hinge, a sliding column hinge base, an anti-slip rubber, a friction disc, and a sliding column hinge switch;

[0008] The support plate is connected to the sliding column hinge base, and the sliding column hinge base, the friction disc, and the ejector rod cover are connected in series through the sliding column hinge switch; an ejector rod screw cap is sleeved inside the ejector rod cover, the ejector rod screw cap is fixedly connected to the ejector rod, the ejector rod is connected to the sleeve rod, the sleeve rod is connected to the base column hinge, and a magnetic base is arranged on the base column hinge.

[0009] Further, a magnetic base switch and an anti-slip rubber are arranged on the magnetic base.

[0010] Further, an arc-shaped slideway is opened on the sliding column hinge base, and the sliding column hinge base, the friction disc, and the ejector rod cover are connected in series through the sliding column hinge switch based on the arc-shaped slideway;

[0011] A scale disc is arranged on the sliding column hinge base.

[0012] Further, a pointer is arranged on the ejector rod cover, and ejector rod cover openings are symmetrically arranged on both side faces of the ejector rod cover.

[0013] Further, the ejector rod and the sleeve rod are connected by threads.

[0014] Compared with the prior art, the utility model can adjust the posture of the support device according to the actual situation of the steel-concrete composite bridge, and finally erect the bottom formwork of the cast-in-situ concrete bridge deck on the support device, which has the advantages of safety and reliability, no damage to the bridge structure, convenient construction, reusable, good economy, and can adapt to different types of steel-concrete composite bridges compared with the traditional construction method.

[0015] The following further describes the present utility model in detail with reference to the drawings and specific embodiments. Description of the Drawings

[0016] Figure 1 Front view of the structure of the bottom formwork support device for the cast-in-situ concrete bridge deck of the steel-concrete composite beam bridge applicable to the present utility model Figure 1 .

[0017] Figure 2 Front view of the structure of the bottom formwork support device for the cast-in-situ concrete bridge deck of the steel-concrete composite beam bridge applicable to the present utility model Figure 2 .

[0018] Figure 3 Side view of the structure of the bottom formwork support device for the cast-in-situ concrete bridge deck of the steel-concrete composite beam bridge applicable to the present utility model.

[0019] Figure 4 Front view of the sliding column hinge of the structure of the bottom formwork support device for the cast-in-situ concrete bridge deck of the steel-concrete composite beam bridge applicable to the present utility model.

[0020] Figure 5Schematic diagram of the A-A cross-section of the sliding column hinge of the cast-in-place concrete bridge deck bottom formwork support device structure applicable to steel-concrete composite beam bridges of the present utility model.

[0021] Figure 6 Schematic diagram of the details of the support rod system of the cast-in-place concrete bridge deck bottom formwork support device structure applicable to steel-concrete composite beam bridges of the present utility model.

[0022] Figure 7 Schematic diagram of the working state of the cast-in-place concrete bridge deck bottom formwork support device structure applicable to steel-concrete composite beam bridges of the present utility model. Detailed implementation manners

[0023] It is easy to understand that according to the technical solution of the present utility model, without changing the essential spirit of the present utility model, those of ordinary skill in the art can imagine various implementation manners of the present utility model. Therefore, the following detailed implementation manners and drawings are only exemplary descriptions of the technical solution of the present invention, and should not be regarded as all of the present utility model or as a limitation or restriction on the technical solution of the present utility model. On the contrary, the purpose of providing these embodiments is to enable those skilled in the art to understand the present utility model more thoroughly. The preferred embodiments of the present utility model will be specifically described below with reference to the drawings, wherein the drawings form a part of this application and are used together with the embodiments of the present utility model to illustrate the innovative concept of the present invention. Embodiment

[0024] Combined with Figures 1 to 6 , a cast-in-place concrete bridge deck bottom formwork support device applicable to steel-concrete composite beam bridges, comprising a support plate 14 and a support assembly, and the support assembly is symmetrically arranged below the support plate 14.

[0025] The support assembly includes a magnetic base 1, a base column hinge 4, a sleeve rod 5, a top rod 6, a top rod cap 7, a top rod cover 8, a sliding column hinge 9, a sliding column hinge base 10, a first anti-slip rubber 11, a friction disk 12, and a sliding column hinge switch 13;

[0026] The support plate 14 is connected to the sliding column hinge base 10, and the sliding column hinge base 10, the friction disk 12, and the top rod cover 8 are connected in series through the sliding column hinge switch 13; the top rod cap 7 is sleeved inside the top rod cover 8, the top rod cap 7 is fixedly connected to the top rod 6, the top rod 6 is connected to the sleeve rod 5, the sleeve rod 5 is connected to the base column hinge 4, and the magnetic base 1 is arranged on the base column hinge 4.

[0027] A magnetic base switch 2 and a second anti-slip rubber 3 are arranged on the magnetic base 1.

[0028] An arc-shaped slideway 10b is opened on the sliding column hinge base 10, and the sliding column hinge base 10, the friction disk 12, and the top rod cover 8 are connected in series based on the arc-shaped slideway 10b through the sliding column hinge switch 13;

[0029] A dial 10a is provided on the sliding column hinge base 10.

[0030] A pointer 8a is provided on the ejector rod cover 8, and ejector rod cover openings 8b are symmetrically provided on both side faces of the ejector rod cover 8.

[0031] Among them, the pointer 8a points to the dial 10a and points to different scales along with the adjustment amount, so as to quickly determine the adjustment situation.

[0032] The ejector rod 6 is threadedly connected with the sleeve rod 5.

[0033] Combined Figure 7 , when constructing a steel-concrete composite bridge, after each steel beam segment 17 is hoisted in place, loosen the sliding column hinge switch 13 of the bottom formwork support device, rotate the ejector rod cap 7 according to the web spacing and slope of the steel beam, roughly adjust the lengths of the sleeve rod 5 and the ejector rod 6, open the two magnetic base switches 2 of the support device, and adsorb the device on the steel beam web by the magnetic force of the two magnetic bases 1 to provide an upward support force for the bottom formwork support device. Second anti-slip rubbers 3 are provided on both of the two magnetic bases 1;

[0034] Adjust the inclination angle of the support plate 14 to make the support plate 14 approximately parallel to the bridge deck, rotate the sliding column hinge switch 13, push the friction plate 12 towards the sliding column hinge base 10 so that the anti-slip rubbers 11 of the two are mutually extruded, limit the rotation of the sliding column hinge 9 through the frictional force, synchronously rotate the two ejector rod caps 7 again, and finely adjust the elongation of the sleeve rod 5 and the ejector rod 6 so that the height of the support plate 14 rises or falls to a suitable support height (low elevation of the cast-in-place bridge deck - thickness of the bridge deck bottom formwork 16 - height of the square timber 15); record the value of the dial 10a pointed by the pointer 8a on the ejector rod cover, record the final elongation of the sleeve rod 5 and the ejector rod 6, adjust the postures of other bottom formwork support devices according to the recorded numbers, adsorb all the bottom formwork support devices on the webs of the steel beam along the longitudinal direction of the bridge at a certain interval. After arranging the bottom formwork support devices, place the square timber 15 on the support plate 14, and place the bridge deck bottom formwork 16 on the square timber 15, then the erection of the cast-in-place concrete bridge deck bottom formwork of the steel-concrete composite bridge can be completed. Finally, the steel bar binding and the pouring of the bridge deck concrete can be carried out on the bottom formwork.

[0035] When the concrete bridge deck reaches the designed strength, the removal of the bridge deck bottom formwork can be carried out. During the removal, first use a wrench to reversely rotate the ejector rod cap 7 to make the support plate 14 drive the square timber 15 and the bridge deck bottom formwork 16 to descend a certain height, remove the square timber 15 and the bridge deck bottom formwork 16 one by one, finally close the two magnetic base switches 2 of the support device, remove the bottom formwork support devices one by one, and continue to carry out the erection work of the cast-in-place concrete bridge deck bottom formwork of other steel-concrete composite bridges.

[0036] The above embodiments have shown and described the basic principles and main features of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above embodiments. What is described in the above embodiments and the specification only illustrates the principles of the present utility model. Without departing from the spirit and scope of the present invention, the present utility model will have various changes and improvements, and all these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A cast-in-place concrete bridge deck bottom formwork support device applicable to a steel-concrete composite beam bridge, characterized in that, It includes a support plate (14) and a support assembly, and the support assembly is symmetrically arranged below the support plate (14). The support assembly includes a magnetic base (1), a base column hinge (4), a sleeve rod (5), a top rod (6), a top rod nut (7), a top rod cover (8), a sliding column hinge (9), a sliding column hinge base (10), a first anti-slip rubber (11), a friction disc (12), and a sliding column hinge switch (13). The support plate (14) is connected to the sliding column hinge base (10), and the sliding column hinge base (10), the friction disc (12), and the top rod cover (8) are connected in series through the sliding column hinge switch (13); the top rod nut (7) is sleeved inside the top rod cover (8), the top rod nut (7) is fixedly connected to the top rod (6), the top rod (6) is connected to the sleeve rod (5), the sleeve rod (5) is connected to the base column hinge (4), and the magnetic base (1) is arranged on the base column hinge (4).

2. The in-situ concrete bridge deck bottom formwork support device applicable to the steel-concrete composite beam bridge according to claim 1, wherein, A magnetic base switch (2) and a second anti-slip rubber (3) are arranged on the magnetic base (1).

3. The in-situ concrete bridge deck bottom formwork support device applicable to the steel-concrete composite beam bridge according to claim 1, characterized in that An arc-shaped slideway (10b) is formed on the sliding column hinge base (10), and the sliding column hinge base (10), the friction disc (12), and the top rod cover (8) are connected in series through the sliding column hinge switch (13) based on the arc-shaped slideway (10b). A scale disc (10a) is arranged on the sliding column hinge base (10).

4. The in-situ concrete bridge deck bottom formwork support device applicable to the steel-concrete composite beam bridge according to claim 3, characterized in that, A pointer (8a) is arranged on the top rod cover (8), and top rod cover openings (8b) are symmetrically arranged on both side faces of the top rod cover (8).

5. The in-situ concrete bridge deck bottom formwork support device applicable to the steel-concrete composite girder bridge according to claim 1, characterized in that, The top rod (6) and the sleeve rod (5) are connected by threads.

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