Steel-wood formwork for bridge construction

Abstract

The utility model relates to the field of bridge construction, and provides a steel-wood formwork for bridge construction, which comprises a steel formwork, a wood formwork and U-shaped steel, one end of the steel formwork is connected with the wood formwork, and meanwhile U-shaped steel is arranged on one side of the steel formwork and one side of the wood formwork respectively. Wherein the U-shaped steel and the steel formwork are fixed in a welded mode, the U-shaped steel and the wood formwork are fixed through a split bolt, and the U-shaped steel of the steel formwork and the U-shaped steel of the wood formwork are fixed in a matched mode through a steel pin and a connecting bolt. According to the utility model, the steel template and the wood template are combined for use, the steel template is used at the chamfer or special-shaped part, and the other plane part is replaced by the wood template, so that the construction cost and difficulty can be greatly reduced on the basis of ensuring the strength requirement required by concrete pouring, and the steel waste is reduced.

Description

Technical Field

[0001] The utility model relates to the field of bridge construction, in particular to a steel-wood formwork for bridge construction. Background Art

[0002] During bridge construction, bridge towers are usually constructed with cast-in-place concrete. Cast-in-place concrete construction technology is a concrete construction process that is poured on-site according to the project site. Usually, a template of a predetermined shape is set up on the outside, and then concrete is poured into the template. Among them, the template is used to support the weight and lateral pressure of the concrete mixture with plastic flow properties, so that it solidifies and forms according to the design requirements. The production, installation and removal of the template is an important process in concrete construction. It not only affects the appearance quality of concrete and restricts the speed of concrete construction, but also has a great impact on the cost of concrete projects.

[0003] Traditional cast-in-place construction formwork usually uses wood or steel as the formwork material. Among them, wood has long occupied an important position in building formwork materials due to its light weight, easy sawing and planing, and convenient construction. However, wooden formwork has a limited number of uses and can only be used as a flat formwork, and cannot be used as a formwork for chamfered or special-shaped areas for concrete pouring. Steel formwork has high strength, high formwork manufacturing precision, is not easy to deform, and can be used as a formwork for chamfered or special-shaped areas, but it has a large deadweight, requires lifting machinery for installation, has a high production cost, and customized steel formwork cannot be reused, resulting in great waste. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a steel-wood formwork for bridge construction, which combines the steel formwork with the wood formwork, uses the steel formwork at chamfers or special-shaped parts, and uses the wood formwork for the remaining flat parts. On the basis of ensuring the strength requirements for concrete pouring, the construction cost and difficulty are greatly reduced, and the waste of steel is reduced.

[0005] The utility model adopts the following technical solutions to solve the above technical problems:

[0006] A steel-wood formwork for bridge construction comprises a steel formwork, a wood formwork and a U-shaped steel; one end of the steel formwork is connected to the wood formwork, and at the same time, one side of the steel formwork and the wood formwork are respectively provided with a U-shaped steel; wherein the U-shaped steel and the steel formwork are welded and fixed, the U-shaped steel and the wood formwork are fixed by tension bolts, and the U-shaped steel of the steel formwork and the U-shaped steel of the wood formwork are fixed by steel pins and connecting bolts.

[0007] As one of the preferred embodiments of the utility model, one end of the steel formwork is a chamfered or shaped end, which is used to adapt to the chamfered or shaped part of the bridge to be constructed; the other end of the steel formwork is a flat end, which is used to connect the wooden formwork and match the flat part of the bridge to be constructed.

[0008] As one of the preferred embodiments of the present invention, the plane end of the steel template is in the same plane as the wooden template.

[0009] As one of the preferred embodiments of the present invention, the U-shaped steel is welded to the plane end of the steel template.

[0010] As one of the preferred embodiments of the utility model, the U-shaped steels are arranged in several groups on the steel formwork and the wooden formwork in the form of "two U-shaped steel bottoms are relatively symmetrically arranged as a group"; and a gap is provided between two U-shaped steels in the same group.

[0011] As one of the preferred embodiments of the utility model, a tension bolt is respectively provided in each U-shaped steel gap on the wooden formwork; the tension bolt is inserted into the corresponding gap until the end penetrates the wooden formwork to achieve fixation of the U-shaped steel and the wooden formwork.

[0012] As one of the preferred embodiments of the present invention, steel pins are respectively provided in the gaps between the U-shaped steels where the steel formwork and the wooden formwork meet; at the same time, bolt holes are respectively provided on the bottom plate of each U-shaped steel and on each steel pin provided in the gap between the U-shaped steels; the bolt holes cooperate with the connecting bolts, and the steel formwork and the wooden formwork are fixed by the bolt holes and the connecting bolts.

[0013] As one of the preferred embodiments of the present invention, the gap size is 3 to 8 cm.

[0014] Compared with the prior art, the utility model has the following advantages: the utility model combines steel formwork with wooden formwork, uses steel formwork at chamfered or special-shaped parts, and replaces the remaining flat parts with wooden formwork. On the basis of ensuring the strength requirements for concrete pouring, it can also greatly reduce construction costs and difficulty and reduce steel waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the steel-wood formwork for bridge construction in Example 1;

[0016] Figure 2 yes Figure 1 A magnified view of the structure of part A;

[0017] Figure 3 yes Figure 1 A magnified view of the structure of part B;

[0018] Figure 4 is a schematic diagram of the structure of the steel pin in Example 1;

[0019] Figure 5 It is a schematic diagram of the installation and application of the steel-wood formwork for bridge construction in Example 1.

[0020] In the figure:

[0021] 100 is a steel-wood formwork for bridge construction, 1 is a steel formwork, 11 is a chamfered or shaped end, 12 is a flat end, 2 is a wood formwork, 3 is a U-shaped steel, 31 is a gap, 4 is a tension bolt, 5 is a steel pin, and 6 is a connecting bolt;

[0022] 200 are bridges to be constructed. DETAILED DESCRIPTION

[0023] The following is a detailed description of an embodiment of the utility model. This embodiment is implemented on the premise of the technical solution of the utility model, and a detailed implementation method and a specific operation process are given, but the protection scope of the utility model is not limited to the following embodiment.

[0024] Example 1

[0025] Reference Figures 1 to 5 A steel-wood formwork 100 for bridge construction in this embodiment includes a steel formwork 1, a wood formwork 2 and a U-shaped steel 3. The steel formwork 1 is a customized formwork, one end of which is designed as a chamfered or special-shaped end 11, which is used to adapt to the chamfered or special-shaped part of the bridge 200 to be constructed; the other end is designed as a plane end 12, which is used to connect the wood formwork 2 as a plane formwork, and cooperate with the wood formwork 2 on the plane part of the bridge 200 to be constructed. The U-shaped steel 3 is respectively arranged on the plane end 12 of the steel formwork 1 and the back rib of the wood formwork 2, and the U-shaped steel 3 is welded and fixed to the plane end 12 of the steel formwork 1, and the U-shaped steel 3 is fixed to the wood formwork 2 by tension bolts 4, and the U-shaped steel 3 of the steel formwork 1 and the U-shaped steel 3 of the wood formwork 2 are fixed by steel pins 5 and connecting bolts 6.

[0026] Specifically, in this embodiment, during installation, the plane end 12 of the steel formwork 1 and the wooden formwork 2 are in the same plane.

[0027] Specifically, in this embodiment, several groups of U-shaped steels 3 are arranged on the steel formwork 1 and the wooden formwork 2 in the form of "two U-shaped steels 3 are relatively symmetrically arranged at the bottom as a group"; and a gap 31 of 3 to 8 cm is provided between two U-shaped steels 3 in the same group.

[0028] Specifically, in this embodiment, a plurality of tension bolts 4 are respectively arranged in the gap 31 of each U-shaped steel 3 on the wooden formwork 2; the tension bolts 4 are inserted into the corresponding gap 31 until the ends penetrate the wooden formwork 2 to achieve fixation between the U-shaped steel 3 and the corresponding wooden formwork 2.

[0029] Specifically, in the present embodiment, a steel pin 5 is respectively provided in the gap 31 of each U-shaped steel 3 located at the junction of the steel formwork 1 and the wooden formwork 2; at the same time, a plurality of bolt holes are respectively provided on the bottom plate of each U-shaped steel 3 and on each steel pin 5 provided in the gap 31 of the U-shaped steel 3; the bolt holes cooperate with the connecting bolts 6, and the steel formwork 1 and the wooden formwork 2 are respectively connected by the connecting bolts 6, so that the steel formwork 1 and the wooden formwork 2 are connected to each other.

[0030] Working method and principle:

[0031] During construction, the wooden formwork 2 is first installed manually, and then the steel formwork 1 is hoisted to the specified position, and the gap 31 of the U-shaped steel 3 of the steel formwork 1 and the wooden formwork 2 is aligned; after positioning, the steel pins 5 are inserted into the gap 31 of the grouped U-shaped steel 3 of the steel formwork 1 and the wooden formwork 2 and aligned with the bolt holes of the bottom plate of the U-shaped steel 3; the connecting bolts 6 are inserted to connect the steel formwork 1 and the wooden formwork 2; after the installation of the above-mentioned steel-wood formwork 100 for bridge construction is completed, concrete pouring is carried out.

[0032] The utility model combines the steel formwork 1 with the wooden formwork 2. The steel formwork 1 is used at the chamfered or special-shaped parts, and the wooden formwork 2 is used to replace the other flat parts. On the basis of ensuring the strength requirements for concrete pouring, the construction cost and difficulty can be greatly reduced, and the waste of steel can be reduced.

[0033] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A steel-wood formwork for bridge construction, characterized in that: It includes a steel formwork, a wooden formwork and a U-shaped steel; one end of the steel formwork is connected to the wooden formwork, and at the same time, one side of the steel formwork and the wooden formwork are respectively provided with a U-shaped steel; wherein the U-shaped steel and the steel formwork are welded and fixed, the U-shaped steel and the wooden formwork are fixed by tension bolts, and the U-shaped steel of the steel formwork and the U-shaped steel of the wooden formwork are fixed by steel pins and connecting bolts.

2. The steel-wood formwork for bridge construction according to claim 1 is characterized in that: One end of the steel formwork is a chamfered or shaped end, which is used to adapt to the chamfered or shaped part of the bridge to be constructed; the other end of the steel formwork is a flat end, which is used to connect the wooden formwork and match the flat part of the bridge to be constructed.

3. The steel-wood formwork for bridge construction according to claim 2 is characterized in that: The plane end of the steel template is in the same plane as the wooden template.

4. The steel-wood formwork for bridge construction according to claim 2, characterized in that: The U-shaped steel is welded to the plane end of the steel template.

5. The steel-wood formwork for bridge construction according to claim 1 is characterized in that: The U-shaped steels are arranged in several groups on the steel formwork and the wooden formwork in the form of "two U-shaped steels with their bottoms relatively symmetrically arranged as a group"; and a gap is provided between two U-shaped steels in the same group.

6. The steel-wood formwork for bridge construction according to claim 5, characterized in that: A tension bolt is respectively arranged in each gap of the U-shaped steel on the wooden formwork; the tension bolt is inserted into the corresponding gap until the end penetrates the wooden formwork, thereby fixing the U-shaped steel and the wooden formwork.

7. The steel-wood formwork for bridge construction according to claim 5, characterized in that: Steel pins are respectively arranged in the gaps between the U-shaped steels where the steel formwork and the wooden formwork meet; at the same time, bolt holes are respectively arranged on the bottom plate of each U-shaped steel and on each steel pin arranged in the gap between the U-shaped steels; the bolt holes cooperate with the connecting bolts, and the steel formwork and the wooden formwork are fixed by the bolt holes and the connecting bolts.

8. The steel-wood formwork for bridge construction according to claim 5, characterized in that: The gap size is 3 to 8 cm.

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