CN214026260U - Inner formwork structure for prefabricating curve section beam - Google Patents

Abstract

The utility model discloses an inner template structure for prefabricating a curve segment beam, which comprises an inner template and a supporting structure, wherein the inner template is fixedly arranged on the supporting structure; the inner template is composed of a plurality of inner matrixes. The section beam correspondingly formed by the inner template is divided into a standard section and a special-shaped section. The inner die of the standard segment comprises a standard piece and an extension piece; the inner die of the special-shaped segment comprises a standard die and a special-shaped die. The utility model provides a prefabricated segmental inner formword general problem in linear type bridge, curved bridge, improved the reuse rate of inner formword by a wide margin. The utility model can be repeatedly used, can assemble the inner template in any form, effectively improves the repeated utilization rate of the template system and the applicability to the sections with various forms, and leads the inner template to be tightly butted with the end template when prefabricating the special-shaped section; the inner formwork can be assembled at will to extend or reduce the length, the reuse rate of the inner formwork is high, and the economic and environmental protection benefits are high.

Description

Inner formwork structure for prefabricating curve section beam

Technical Field

The utility model relates to an interior template structure suitable for curve segment section roof beam is prefabricated belongs to assembled bridge construction technical field.

Background

In urban viaduct and urban viaduct rail traffic construction, adopt prefabricated segment to assemble superstructure construction, reducible construction is to the harmful effects that urban traffic caused, shortens construction period, strengthens the environmental protection.

The prefabricated section concrete beam bridge is a bridge type which is formed by prefabricating a beam body in sections and assembling the sections into a whole by utilizing prestressed beams. Compare in traditional construction technique, prefabricated section assembles the technique and has following advantage:

(1) the structure is prefabricated in sections, the construction quality is easily guaranteed, and the line shape of the upper structure is easily controlled;

(2) the prefabrication of the upper structure and the construction of the lower structure can be operated simultaneously, and the segment assembly is faster than the integral cast-in-place, so that the construction progress is accelerated;

(3) the requirements on the construction site and the surrounding environment are low, and the prefabricated sections can be conveyed to the construction site through an automobile;

(4) the segments can be maintained before being conveyed to a construction site, and are directly hoisted after being conveyed to the construction site, so that the structure is less influenced due to the shrinkage and creep phenomenon of concrete, and the later-stage prestress loss is less;

(5) the construction mechanization degree is high, and the method is particularly suitable for the rapid construction of large-span bridges.

In addition to the advantages, compared with the integral prefabrication construction, the method simplifies the beam manufacturing process, is easy to control the line shape, is convenient to transport and enter a field, has low requirements on the field and reduces the beam storage land; compared with the integral cast-in-place construction, the construction progress is greatly accelerated, and the construction cost is saved. With the continuous improvement of social labor cost and the continuous improvement of steel bar corrosion prevention technology in recent years, the bridge type is more and more widely applied and becomes a trend of bridge construction development in the future.

There are two segment prefabrication techniques, which are divided into long-line method and short-line method. For the linear bridge, a set of prefabricated templates can be shared by a long-line method and a short-line method. However, for curve segments such as urban viaduct ramps or bridge bends, templates need to be customized or a cast-in-place method is adopted, so that the construction efficiency is greatly reduced, and unnecessary waste is brought. Meanwhile, the universality of the section beam prefabricated template system is always an important resistance which troubles the development of the assembled bridge, and on one hand, the complexity and the diversity of the section form of the section beam are included, so that the reuse rate of the template system is extremely low; on the other hand, template system manufacturing does not have uniform specifications and requirements, creating many difficulties for retrofit reuse of existing equipment.

SUMMERY OF THE UTILITY MODEL

The utility model provides a be used for prefabricated inner formword structure of curve segmental beam solves the general problem of prefabricated segmental inner formword in linear type bridge, curved bridge, has improved the reuse rate of inner formword by a wide margin.

The complexity and diversity of the section form of the segmental beam enable the reuse rate of the template system to be extremely low, and the technical scheme provides a reusable inner template form;

the template system is manufactured without uniform specifications and requirements, and a lot of difficulties are generated for the transformation and the reuse of the existing equipment, which is mainly reflected in the matching problem of the curve section beam inner mold and the end mold. The inner template form provided by the technical scheme can solve the problem of matching of the prefabricated inner template of the special-shaped section of the curved bridge with the end template, and has high reuse rate and strong economic and environmental protection benefits.

The utility model discloses can realize following technical function:

1. the inner template is connected with the support plate through a bolt structure, so that the inner template can be flexibly detached, the support plate is conveniently connected with the inner template in any form, and the reuse rate of the support system is improved;

2. the inner template is formed by assembling a plurality of inner templates, the connection between the inner templates is realized through a socket structure and a buckle, and the length can be adjusted at will;

3. and customizing the special-shaped inner die plate according to the curvature radius of the bridge, so that the end die and the inner die are spliced tightly to form a joint.

In order to achieve the purpose, the technical scheme adopted by the utility model is an inner template structure suitable for prefabricating a curve segment beam, which comprises an inner template 3 and a supporting structure, wherein the inner template 3 is fixedly arranged on the supporting structure; the inner template 3 is composed of a plurality of inner dies. The section beam correspondingly formed by the inner template 3 is divided into a standard section 1 and a special-shaped section 2. The inner die of the standard segment 1 comprises a standard die 31 and an extension die 32; the inner die of the profiled section 2 comprises a standard die 31 and a profiled die 33.

The standard plate 31 and the extension plate 32 are connected through a socket tongue and groove at the end part, and the standard plate 31 and the special-shaped plate 33 are connected through a socket tongue and groove at the end part. The socket concave-convex groove plays a role in positioning the adjacent inner die sheets; the connecting buckle 34 connects and fixes the standard sheet 31 and the extension sheet 32, and the standard sheet 31 and the side part of the special-shaped sheet 33.

Further, for the standard segment 1 to be extended, the standard sheet 31 and the extension sheet 32 are spliced; for the profiled section 2, a standard sheet 31 and a profiled sheet 33 are used for splicing.

Furthermore, both ends of the cross section of the standard sheet 31 and the cross section of the extension sheet 32 are rectangular; one end of the section of the special-shaped sheet 33 is rectangular, the other end of the section is special-shaped, and the special-shaped shape is selected according to actual field requirements in a customized mode.

Furthermore, the supporting structure comprises a supporting plate 4 and a support 5, the supporting plate 4 and the inner formwork fixing end 7 are connected through a bolt structure 6, the supporting plate 4 is supported by the support 5, and the supporting structure has the advantages of being convenient to disassemble and capable of replacing any inner formwork.

Compared with the prior art, the utility model discloses following technological effect has.

1. The utility model provides a reusable inner template form, which can assemble inner templates in any form, effectively improve the reuse rate of a template system and the applicability to sections with various forms;

2. the inner template form provided by the utility model can solve the problem that the prefabricated inner template of the special-shaped segment of the curved bridge is not matched with the end mould, and is convenient for replacing the special-shaped sheet, so that the inner template is tightly butted with the end mould when the special-shaped segment is prefabricated;

3. the inner formwork can be assembled at will to extend or reduce the length, the reuse rate of the inner formwork is high, and the economic and environmental protection benefits are high.

Drawings

Fig. 1 is a plan view of a segmented beam.

Fig. 2 shows a connecting structure of the inner formwork and the supporting plate.

Fig. 3 is a top view of the inner mold fixed end splicing structure.

Fig. 4 is a side view of a die-splicing structure.

Figure 5 internal mold form.

In the figure, 1, standard segment; 2. a profiled section; 3. an inner template; 4. a support plate; 5. supporting; 6. a bolt structure; 7. and (5) fixing the inner template.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. The following description of an exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Unless specifically stated otherwise, the relative arrangement of the components and steps, the numerical expressions, and numerical values set forth in these embodiments do not limit the scope of the present invention.

Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.

As shown in fig. 1-5, the utility model provides an interior template structure suitable for curve segment girder prefabrication, including standard festival section 1, special-shaped festival section 2, interior template 3, backup pad 4, support 5, bolt structure 6, interior template stiff end 7. The sectional beam is divided into a standard section 1 and a special-shaped section 2. The prefabricated special-shaped segment 2 cannot directly adopt a template system of the standard segment 1, and is mainly characterized in that an inner mold is not matched with an end mold, and the prefabricated special-shaped segment is often customized or adjusted by adopting a batten filling method on site. The utility model discloses an interior matrix is the profiled surface of festival section roof beam, according to the size and the curved surface shape of festival section roof beam, prefabricates standard piece 31, extension piece 32, special-shaped piece 33 quantity and the size of inner formword 3 in advance at the mill. And splicing is carried out according to the sectional beams of different road sections in the actual field.

The internal mold structure comprises an internal mold plate 3, a support plate 4 and a support 5. In order to increase the universality of the internal mold structure, the supporting plate 4 and the internal mold plate fixing end 7 are connected by adopting the bolt structure 6, and the internal mold plate fixing structure has the characteristics of convenience in disassembly and capability of replacing any internal mold plate form. The internal mold forms are shown in fig. 5, and include, but are not limited to, the first internal mold form 301, the second internal mold form 302, and the third internal mold form 303.

The inner template 3 is composed of a plurality of inner mold sheets, and the inner mold sheets comprise a standard sheet 31, an extension sheet 32 and a special-shaped sheet 33. The connecting structure between the inner matrixes comprises a socket concave-convex groove and a connecting buckle 34. The socket tongue and groove mainly serves to position the inner mold piece and the connection buckle 34 serves to fix.

For the standard segment 1 needing to be extended in length, a standard sheet 31 and an extension sheet 32 are spliced; for the profiled section 2, a standard sheet 31 and a profiled sheet 33 are used for splicing.

Claims (4)

1. The utility model provides an interior template structure suitable for curve segment roof beam is prefabricated which characterized in that: the inner template is fixedly arranged on the supporting structure; the inner template consists of a plurality of inner matrixes; the section beam correspondingly formed by the inner template is divided into a standard section and a special-shaped section; the inner die of the standard segment comprises a standard piece and an extension piece; the inner die of the special-shaped segment comprises a standard die and a special-shaped die;

the standard sheet and the extension sheet are connected through a socket tongue and groove at the end part; the socket concave-convex groove plays a role in positioning the adjacent inner die sheets; the connecting buckle is used for connecting and fixing the side parts of the standard sheet and the special-shaped sheet between the standard sheet and the extension sheet.

2. The internal formwork structure suitable for prefabrication of a curved section beam according to claim 1, wherein: for the standard segment needing to be extended, splicing the standard segment and the extension segment; and for the special-shaped segment, splicing a standard sheet and a special-shaped sheet.

3. The internal formwork structure suitable for prefabrication of a curved section beam according to claim 1, wherein: both ends of the cross section of the standard sheet and the cross section of the extension sheet are rectangular; one end of the section of the special-shaped sheet is rectangular, the other end of the section of the special-shaped sheet is special-shaped, and the special-shaped shape is selected according to the actual requirements on the site.

4. The internal formwork structure suitable for prefabrication of a curved section beam according to claim 1, wherein: the supporting structure comprises a supporting plate and a support, the supporting plate and the fixed end of the inner template are connected through a bolt structure, and the supporting plate is supported by the support.

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