Standardized, recyclable, pole-free formwork support system for steel-concrete composite bridges

Abstract

The present invention discloses a standardized turnover-free pole formwork support system for a steel-concrete composite bridge, including a triangular truss support part A and an I-beam support part B. The main keel I of the triangular truss support part A is arranged up and down and connected with the secondary keel I to form a triangular truss. The head end of the upper main keel I is connected to the flange plate of the steel structure trough beam through a direction adjustment box and the tail end is connected to the safety guardrail through a safety guardrail base. The head end of the lower main keel I is connected to the web of the steel structure trough beam through an adjustable support base; the main keel II of the I-beam support part B is arranged above the steel structure trough beam diaphragm, the secondary keel II is arranged above the main keel II, the adjustable secondary keel II is arranged above or on one side of the secondary keel II, the wedge-shaped pad is arranged between the inclined diaphragm of the steel structure trough beam and the main keel II, and the T-shaped pad is arranged below the inclined diaphragm and the upper end supports the main keel II. The present invention has the characteristics of convenient disassembly and assembly, convenient turnover, and economical and safe.

Description

Technical Field

[0001] The invention belongs to the technical field of construction machinery, and in particular relates to a standardized, turnaround, pole-free formwork support system for a steel-concrete composite bridge, which is convenient to assemble and disassemble, easy to turn around, economical, safe, and environmentally friendly. Background Art

[0002] Steel-concrete composite bridge is a new type of structure that combines the characteristics of reinforced concrete structure and steel structure bridge. It has the advantages of high structural bearing capacity, light weight, large bridge spanning capacity, high structural rigidity, fast construction, low risk, easy management, low cost, easy installation, excellent fire resistance and fire resistance. It is widely used in highway, railway and urban interchange construction.

[0003] The traditional bridge deck concrete pouring formwork support system generally adopts a fastener type, bowl buckle type or disc buckle type full-height scaffolding support system, which is not only difficult to install and disassemble, resulting in low construction efficiency and difficulty in reuse, but also occupies space, and it is very difficult to set up a full-height scaffolding for a bridge deck with a large span and a high height. With the increase in transportation and urban infrastructure construction and the improvement of design level, labor and material costs, the full-height scaffolding formwork support system used in the traditional bridge deck concrete pouring is prone to loss or damage during transportation and storage due to the large number of rods, resulting in excessive material consumption, which is not only not conducive to environmental protection, but also has high costs, material accumulation, messy construction sites and a long construction cycle. Its safety performance is no longer satisfactory for the construction of bridge deck concrete with a large span and a high height. If it is used, it is easy to cause safety accidents and has great safety hazards. For this reason, it is very necessary to develop a turnover and standardized pole-free formwork support system that can solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to provide a standardized and turnaround pole-free formwork support system for steel-concrete composite bridges, which is convenient to disassemble and assemble, easy to turn around, economical, safe and environmentally friendly.

[0005] The object of the present invention is achieved as follows: it includes a triangular truss support part A and an I-beam support part B, wherein the triangular truss support part A includes a main keel I, a secondary keel I, a steering box, an adjustable support base, a safety guardrail base, and a safety guardrail, wherein the main keel I is composed of an upper main keel I and a lower main keel I arranged horizontally up and down and connected to a secondary keel I arranged vertically, forming a triangular truss structure, the head end of the upper main keel I is connected to a flange plate of a steel structure groove beam through a steering box and the tail end is fixedly connected to the safety guardrail base, the bottom of the safety guardrail is detachably connected to the safety guardrail base, and the head end of the lower main keel I It is connected to the web of the steel structure trough beam through an adjustable support base; the I-beam support part B includes a main keel II, a secondary keel II, an adjustable secondary keel II, a wedge-shaped pad, and a T-shaped pad. The main keel II is arranged along the bridge direction above the cross beam of the steel structure trough beam, the secondary keel II is arranged at intervals and laterally above the main keel II, the adjustable secondary keel II is arranged above or on one side of the secondary keel II, the wedge-shaped pad is arranged between the upper surface of the inclined cross beam of the steel structure trough beam and the bottom surface of the main keel II, and the T-shaped pad is fixedly arranged on the lower surface of the inclined cross beam of the steel structure trough beam corresponding to the main keel II, and the upper surface of the T-shaped pad supports the bottom surface of the main keel II.

[0006] Beneficial effects of the present invention:

[0007] 1. The present invention forms a complete support system by connecting the triangular truss support part and the I-beam support part with the steel structure trough beam through detachable connecting components, thereby realizing the standardized construction and detachable reuse of the formwork support system. It is convenient to disassemble and assemble, and the adjustment is convenient and stable during the assembly process. It is low in cost, environmentally friendly and economical, and avoids the shortcomings of the traditional full-frame vertical pole support system such as complex procedures, cumbersome operations, low work efficiency, and large investment. It is suitable for large-scale application in the construction of steel-concrete composite bridges.

[0008] 2. The present invention can conveniently replace different standardized triangular truss support parts and I-beam support parts and their component assemblies as needed. The triangular truss support part can also adjust the support angle with the template to adapt to different template models. It not only has a high degree of standardization and strong adaptability, but also can be repeatedly disassembled and reused during use, and the average use cost is low.

[0009] 3. The present invention realizes factory production and on-site modular assembly through the modular structure of the main keel, secondary keel, adjustment box, adjustable support base and detachable connecting components. It can not only significantly improve the formwork efficiency, effectively shorten the construction period and reduce labor costs, but also avoid the problems of material accumulation and clutter on the construction site in the traditional formwork support system.

[0010] 4. The present invention forms a triangular truss structure through the main keel I and the secondary keel I, and is connected to the steel structure trough beam through a detachable connecting assembly with an adjustment box and an adjustable support base. Not only is the connection safe and reliable, but it can also effectively ensure the overall structural strength and bearing capacity of the triangular truss support part on the basis of lightweight and standardization, thereby ensuring construction quality and construction safety, and achieving the purpose of speeding up construction progress and reducing project costs to increase efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a working schematic diagram of the present invention;

[0012] Figure 2 It is a schematic diagram of the structure of the present invention;

[0013] Figure 3 It is a schematic diagram of the structure of the triangular truss support part of the present invention;

[0014] Figure 4 The adjustable support base structure of the present invention is schematically shown in FIG. Figure 1 ;

[0015] Figure 5 The adjustable support base structure of the present invention is shown in FIG. Figure 2 ;

[0016] Figure 6 It is an enlarged view of the local structure of the I-beam support part of the present invention;

[0017] In the figure: A-triangular truss support part, 1-main keel Ⅰ, 1-1-upper main keel Ⅰ, 1-2-lower main keel Ⅰ, 2-secondary keel Ⅰ, 3-adjustment box, 3-1-direction box body, 3-2-fixing bolt Ⅰ, 3-3-adjustment bolt, 3-4-fixing bolt Ⅱ, 4-adjustable support base, 4-1-gasket, 4-2-support screw, 4-3-adjusting nut, 4-4-sliding bearing, 4-5-thrust spherical bearing, 5-safety guardrail base, 6-safety guardrail, 7-layer secondary keel, 8-layer, B-I-beam support part, 9-main keel Ⅱ, 10-secondary keel Ⅱ, 11-adjustable secondary keel Ⅱ, 12-wedge-shaped pad, 13-T-shaped pad, C-steel structure trough beam, D-C50 bridge deck concrete. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but the present invention is not limited in any way. Any changes or improvements made based on the teachings of the present invention belong to the protection scope of the present invention.

[0019] like Figures 1 to 6As shown, the present invention includes a triangular truss support part A and an I-beam support part B, wherein the triangular truss support part A includes a main keel Ⅰ1, a secondary keel Ⅰ2, a steering box 3, an adjustable support base 4, a safety guardrail base 5, and a safety guardrail 6. The main keel Ⅰ1 is composed of an upper main keel Ⅰ1-1 and a lower main keel Ⅰ1-2 arranged horizontally up and down and connected to the secondary keel Ⅰ2 arranged vertically, forming a triangular truss structure. The head end of the upper main keel Ⅰ1-1 is connected to the flange plate of the steel structure groove beam through the steering box 3, and the tail end is fixedly connected to the safety guardrail base 5. The bottom of the safety guardrail 6 is detachably connected to the safety guardrail base 5, and the head end of the lower main keel Ⅰ1-2 is connected to the steel structure groove beam flange through the steering box 3. The support base 4 is connected to the web of the steel structure trough beam; the I-beam support part B includes a main keel II 9, a secondary keel II 10, an adjustable secondary keel II 11, a wedge-shaped pad 12, and a T-shaped pad 13. The main keel II 9 is arranged along the bridge direction above the cross beam of the steel structure trough beam, the secondary keel II 10 is arranged at intervals and transversely above the main keel II 9, the adjustable secondary keel II 11 is arranged above or on one side of the secondary keel II 10, the wedge-shaped pad 12 is arranged between the upper surface of the inclined cross beam of the steel structure trough beam and the bottom surface of the main keel II 9, the T-shaped pad 13 is fixedly arranged on the lower surface of the inclined cross beam of the steel structure trough beam corresponding to the main keel II 9, and the upper surface of the T-shaped pad 13 supports the bottom surface of the main keel II 9.

[0020] like Figure 3 As shown, the steering box 3 includes a steering box body 3-1, fixing bolts Ⅰ3-2, steering bolts 3-3, and fixing bolts Ⅱ3-4. The steering box body 3-1 is provided with an arc-shaped adjustment hole on a side close to the web of the steel structure trough beam. The head end of the upper main keel Ⅰ1-1 is fixedly connected to the steering box body 3-1 through the fixing bolts Ⅰ3-2 on the side away from the arc-shaped adjustment hole. The head end of the upper main keel Ⅰ1-1 is also fixedly connected to the steering box body 3-1 at an adjustable angle through the steering bolts 3-3 passing through the arc-shaped adjustment hole. The steering box body 3-1 is fixedly connected to the top plate of the steel structure trough beam through the fixing bolts Ⅱ3-4.

[0021] The steering box body 3-1 is a square tube structure. The head end of the steering box body 3-1 is fixedly connected to the steel structure trough beam flange plate by a fixing bolt II3-4 passing through the upper and lower tube walls. The middle end of the steering box body 3-1 is provided with an arc-shaped adjustment hole passing through the two side walls. The head end of the upper main keel I1-1 is fixedly connected to the steering box body 3-1 by a fixing bolt I3-2 passing through the two side walls of the rear end of the steering box body 3-1.

[0022] The arc-shaped adjustment hole of the adjustment box body 3-1 takes the center of the connection hole of the fixing bolt I3-2 as the center of the circle.

[0023] Above the upper main keel Ⅰ1-1, a layer plate secondary keel 7 parallel to the main keel Ⅱ9 is arranged at intervals, and above the layer plate secondary keel 7, a layer plate 8 supporting concrete is arranged.

[0024] A layer plate 8 for supporting concrete is arranged above the adjustable secondary keel II 11, and the main keel II 9 is an I-beam or T-shaped steel.

[0025] like Figure 3 As shown, the two ends of the secondary keel Ⅰ2 are respectively fixedly connected to the upper main keel Ⅰ1-1 and the lower main keel Ⅰ1-2, and the adjustable support base 4 includes a gasket 4-1, a support screw 4-2, and an adjusting nut 4-3. The gasket 4-1 is fixedly connected to the web of the steel structure trough beam, the bottom end of the support screw 4-2 is fixedly connected to the gasket 4-1 and is externally threadedly connected to the adjusting nut 4-3, the head end of the support screw 4-2 penetrates and extends from the bottom end of the lower main keel Ⅰ1-2, and the head end of the lower main keel Ⅰ1-2 is supported on the end face of the adjusting nut 4-3.

[0026] like Figure 4 As shown, the lower main keel Ⅰ1-2 is in the shape of a round tube or a square tube with a closed head end and provided with a round hole for passing the support screw 4-2, and a sliding bearing 4-4 ​​or a thrust bearing is coaxially arranged between the head end of the lower main keel Ⅰ1-2 and the end face of the adjusting nut 4-3.

[0027] like Figure 5 As shown, the diameter of the circular hole at the head end of the lower main keel Ⅰ1-2 is larger than the outer diameter of the support screw 4-2, or a thrust joint bearing 4-5 is provided between the head end of the lower main keel Ⅰ1-2 and the end face of the adjusting nut 4-3.

[0028] like Figure 3 As shown, the bottom of the safety guardrail base 5 is vertically fixedly connected to the tail end of the upper main keel Ⅰ1-1, and the safety guardrail base 5 is provided with at least two fixing holes spaced axially, and the safety guardrail 6 is fixedly connected to the safety guardrail base 5 by fixing bolts Ⅲ passing through the fixing holes.

[0029] Working principle and working process of the present invention:

[0030] The present invention forms a complete support system by connecting the triangular truss support part and the I-beam support part with the steel structure trough beam through detachable connection components, thereby realizing the standardized construction and detachable reuse of the template support system. It is convenient to disassemble and assemble, and the adjustment during the assembly process is convenient and stable, thereby significantly improving the efficiency of the formwork, effectively shortening the construction period and reducing the labor cost. It is also reusable, avoiding the shortcomings of the traditional full-frame pole support system, such as complex procedures, cumbersome operations, low work efficiency, and large investment.

[0031] Moreover, different standardized triangular truss support parts and I-beam support parts and their component assemblies can be conveniently replaced according to needs. The triangular truss support part can also adjust the support angle with the template to adapt to different template models, with a high overall standard rate and strong adaptability. Through the modular structure of the main keel, secondary keel, adjustment box, adjustable support base and detachable connection components, factory production and on-site modular assembly can be realized, which can not only significantly improve the formwork efficiency, effectively shorten the construction period and reduce labor costs, but also avoid the problems of material accumulation and clutter on the construction site of the traditional formwork support system. The triangular truss structure is formed by the main keel I and the secondary keel I, and the adjustment box and the adjustable support base are connected to the steel structure trough beam through the detachable connection component. Not only is the connection strength good and safe and reliable, but also on the basis of lightweight and standardization, the overall structural strength and bearing capacity of the triangular truss support part can be effectively guaranteed, thereby ensuring the construction quality and construction safety, and achieving the purpose of speeding up the construction progress and reducing the cost of the project. It is suitable for large-scale application in the construction of steel-concrete composite bridges.

[0032] like Figures 1 to 6 As shown, the main keel Ⅰ1 is arranged horizontally and spaced up and down and welded to the secondary keel Ⅰ2 arranged vertically and spaced to form a triangular truss structure; first, the head end of the adjustment box body 3-1 is fixedly connected to the flange plate of the steel structure trough beam by the fixing bolt Ⅱ3-4, and then the head end of the upper main keel Ⅰ1-1 of the triangular truss structure is fixedly connected to the adjustment box 3 by the fixing bolt Ⅰ3-2 and the adjustment bolt 3-3. When necessary, the angle of the upper main keel Ⅰ1-1 is adjusted by the adjustment bolt 3-3, and finally the tail end is fixedly connected to the safety guardrail 6 by the fixing bolt Ⅲ through the safety guardrail base 5; the head end of the lower main keel Ⅰ1-2 is adjusted by adjusting the adjusting nut 4-3 on the support screw 4-2 to form a stable support with the web of the steel structure trough beam, and finally a stable, reliable and adjustable triangular truss support part A with self-contained safety protection is formed as a whole. The main purlin II 9 is arranged along the bridge direction above the cross beam in the steel structure trough beam, the secondary purlin II 10 and the adjustable secondary purlin II 11 are arranged horizontally above the main purlin II 9 according to the spacing, and the elevation of the main purlin II 9 is adjusted by the wedge-shaped wooden pad 12 and the T-shaped steel pad 13 to form a stable and reliable I-beam support part B; when disassembling, repeat the above process in reverse.

Claims

1. A standardized, recyclable, pole-free formwork support system for steel-concrete composite bridges, characterized by: The invention comprises a triangular truss support part A and an I-beam support part B. The triangular truss support part A comprises a main keel I (1), a secondary keel I (2), a steering box (3), an adjustable support base (4), a safety guardrail base (5), and a safety guardrail (6). The main keel I (1) is composed of an upper main keel I (1-1) and a lower main keel I (1-2) arranged in a horizontal vertical interval and connected to a secondary keel I (2) arranged in a vertical interval to form a triangular truss structure. The head end of the upper main keel I (1-1) is connected to the flange plate of the steel structure trough beam through the steering box (3) and the tail end is fixedly connected to the safety guardrail base (5). The bottom of the safety guardrail (6) is detachably connected to the safety guardrail base (5). The head end of the lower main keel I (1-2) is connected to the flange plate of the steel structure trough beam through the steering box (3) and the tail end is fixedly connected to the safety guardrail base (5). 4) connected with the web of the steel structure trough beam; the I-beam support portion B comprises a main keel II (9), a secondary keel II (10), an adjustable secondary keel II (11), a wedge-shaped pad (12), and a T-shaped pad (13); the main keel II (9) is arranged above the transverse beam of the steel structure trough beam along the bridge direction; the secondary keel II (10) is arranged above the main keel II (9) at intervals in the transverse direction; the adjustable secondary keel II (11) is arranged above or on one side of the secondary keel II (10); the wedge-shaped pad (12) is arranged between the upper surface of the inclined transverse beam of the steel structure trough beam and the bottom surface of the main keel II (9); the T-shaped pad (13) is fixedly arranged on the lower surface of the inclined transverse beam of the steel structure trough beam corresponding to the main keel II (9); the upper surface of the T-shaped pad (13) supports the bottom surface of the main keel II (9).

2. The standardized, turnaround, pole-free formwork support system for steel-concrete composite bridges according to claim 1 is characterized in that The steering box (3) comprises a steering box body (3-1), a fixing bolt I (3-2), a steering bolt (3-3), and a fixing bolt II (3-4). The steering box body (3-1) is provided with an arc-shaped adjustment hole on a side close to the web of the steel structure trough beam. The head end of the upper main keel I (1-1) is fixedly connected to the steering box body (3-1) via the fixing bolt I (3-2) on a side away from the arc-shaped adjustment hole. The head end of the upper main keel I (1-1) is also fixedly connected to the steering box body (3-1) at an adjustable angle via the steering bolt (3-3) passing through the arc-shaped adjustment hole. The steering box body (3-1) is fixedly connected to the top plate of the steel structure trough beam via the fixing bolt II (3-4).

3. The standardized, turnaround, pole-free formwork support system for steel-concrete composite bridges according to claim 2 is characterized in that The steering box body (3-1) is a square tube structure. The head end of the steering box body (3-1) is fixedly connected to the flange plate of the steel structure trough beam by means of fixing bolts II (3-4) passing through the upper and lower tube walls. The middle end of the steering box body (3-1) is provided with an arc-shaped adjustment hole passing through the two side walls. The head end of the upper main keel I (1-1) is fixedly connected to the steering box body (3-1) by means of fixing bolts I (3-2) passing through the two side walls at the rear end of the steering box body (3-1).

4. The standardized, turnaround, pole-free formwork support system for steel-concrete composite bridges according to claim 2 is characterized in that The arc-shaped adjustment hole of the adjustment box body (3-1) takes the center of the connection hole of the fixing bolt I (3-2) as the center of the circle.

5. The standardized, turnaround, pole-free formwork support system for steel-concrete composite bridges according to claim 2 is characterized in that A layer plate secondary keel (7) parallel to the main keel II (9) is arranged above the upper main keel I (1-1) at intervals, and a layer plate (8) supporting concrete is arranged above the layer plate secondary keel (7).

6. The standardized, turnaround, pole-free formwork support system for steel-concrete composite bridges according to claim 2 is characterized in that A layer plate (8) for supporting concrete is arranged above the adjustable secondary keel II (11), and the main keel II (9) is an I-beam or a T-shaped steel.

7. The standardized, turnaround, pole-free formwork support system for a steel-concrete composite bridge according to any one of claims 2 to 6, characterized in that The two ends of the secondary keel I (2) are respectively fixedly connected to the upper main keel I (1-1) and the lower main keel I (1-2); the adjustable support base (4) comprises a gasket (4-1), a support screw (4-2), and an adjusting nut (4-3); the gasket (4-1) is fixedly connected to the web of the steel structure trough beam; the bottom end of the support screw (4-2) is fixedly connected to the gasket (4-1) and is externally threadedly connected to the adjusting nut (4-3); the head end of the support screw (4-2) penetrates and extends from the bottom end of the lower main keel I (1-2); the head end of the lower main keel I (1-2) is supported on the end face of the adjusting nut (4-3).

8. The standardized, turnaround, pole-free formwork support system for a steel-concrete composite bridge according to claim 7 is characterized in that The lower main keel I (1-2) is in the shape of a circular tube or a square tube and has a closed head end and is provided with a circular hole through which the support screw (4-2) passes. A sliding bearing (4-4) or a thrust bearing is coaxially provided between the head end of the lower main keel I (1-2) and the end face of the adjusting nut (4-3).

9. The standardized, turnaround, pole-free formwork support system for a steel-concrete composite bridge according to claim 8, characterized in that The diameter of the circular hole at the head end of the lower main keel I (1-2) is larger than the outer diameter of the support screw (4-2), or a thrust joint bearing (4-5) is provided between the head end of the lower main keel I (1-2) and the end face of the adjusting nut (4-3).

10. The standardized, turnaround, pole-free formwork support system for a steel-concrete composite bridge according to claim 8, characterized in that The bottom of the safety guardrail base (5) is vertically fixedly connected to the tail end of the upper main keel I (1-1), the safety guardrail base (5) is provided with at least two fixing holes spaced apart along the axial direction, and the safety guardrail (6) is fixedly connected to the safety guardrail base (5) by fixing bolts III passing through the fixing holes.

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