Formwork device for prefabricating hollow beam of small and medium-sized bridge
By using a formwork device that combines a construction platform and steel formwork to form a supporting skeleton in the prefabrication of hollow beams for small and medium-sized bridges, the dependence on large-scale machinery and sites in the prefabrication process of small and medium-sized bridges has been eliminated, achieving the effects of reducing costs and improving efficiency.
Patent Information
- Application Number
- CN202520378991.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-06
- Publication Date
- 2025-12-16
- Estimated Expiration
- 2035-03-06
AI Technical Summary
In existing technologies, prefabricated hollow beam structures for small and medium-sized bridges require the use of large-scale machinery and equipment and large prefabrication sites, resulting in high costs and uneconomical practices.
A formwork device consisting of a construction platform, a first steel formwork, and a second steel formwork is adopted. A supporting frame is formed by combining reinforcing pipes and diagonal braces, which reduces the reliance on large mechanical equipment and allows for direct on-site casting, avoiding the need for setting up large prefabrication sites.
It reduces prefabrication costs, improves construction efficiency, is suitable for the preparation of prefabricated hollow beams for small and medium-sized bridges, and reduces the need for large machinery and site.
Smart Images
Figure CN223671491U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to bridge prefabricated hollow beam technical field, specifically relates to a small and medium-sized bridge prefabricated hollow beam formwork device. BACKGROUND
[0002] Hollow beam is a common bridge structure, and currently hollow beam bodies adopt prefabricated structures, that is, are mostly prefabricated in a prefabrication site and then transported to a construction site for assembling and combining.
[0003] The prefabricated assembling technology is a construction technology that has developed rapidly in recent years and has the advantages of high construction efficiency, short construction period and low cost and is widely applied in the fields of civil engineering, traffic and water conservancy.
[0004] The existing hollow beam is usually assembled by large mechanical equipment such as a gantry crane in the prefabrication process, and the overall cost is high due to the adoption of customized steel forms, a large prefabrication site and many auxiliary facilities, and the prefabricated hollow beam structure of a small and medium-sized bridge is extremely uneconomical. UTILITY MODEL CONTENTS
[0005] The utility model solves the technical problem that a small and medium-sized bridge prefabricated hollow beam formwork device can effectively reduce the application of large mechanical equipment such as a gantry crane, avoid the setting of a large bridge beam slab prefabrication site and reduce the prefabrication cost.
[0006] The utility model adopts the technical scheme that a small and medium-sized bridge prefabricated hollow beam formwork device comprises a construction pedestal, a first steel formwork and a second steel formwork, the first steel formwork and the second steel formwork are erected on opposite sides of the construction pedestal, a first reinforcing pipe is arranged on the first steel formwork, a second reinforcing pipe is arranged on the second steel formwork, in addition, a third reinforcing pipe is further arranged, the third reinforcing pipe is fixedly connected with the first reinforcing pipe and the second reinforcing pipe, the construction pedestal, the first steel formwork and the second steel formwork enclose a pouring space, a prefabricated reinforcing structure is arranged in the pouring space, an inner formwork is fixedly arranged on the prefabricated reinforcing structure, and the first reinforcing pipe, the second reinforcing pipe and the third reinforcing pipe combine to form a framework for fixing the first steel formwork and the second steel formwork.
[0007] Further, one end of the first reinforcing pipe is welded to the first steel formwork, and the other end of the first reinforcing pipe is connected with one end of the third reinforcing pipe through a lock buckle.
[0008] Further, one end of the second reinforcing pipe is welded to the second steel formwork, and the other end of the second reinforcing pipe is connected with the other end of the third reinforcing pipe through a lock buckle.
[0009] Further, the axial direction of the first reinforcing pipe and the second reinforcing pipe is perpendicular to the axial direction of the third reinforcing pipe.
[0010] Further, a pair of inclined pull rods are further included, one end of the inclined pull rod is connected with the first reinforcing pipe or the second reinforcing pipe, and the other end of the inclined pull rod is arranged on the construction runway on the two sides of the construction pedestal.
[0011] Further, a drag hook is arranged on the construction runway, and the other end of the inclined pull rod is connected with the drag hook.
[0012] Further, a support member is arranged between the construction runway and the construction pedestal.
[0013] Further, the bottom of the support member is further provided with a mortar layer.
[0014] Further, the sum of the thickness of the support member and the mortar layer is less than the thickness of the construction runway.
[0015] Compared with the prior art, the utility model has the beneficial effects that:
[0016] By arranging the first steel formwork and the second steel formwork on the opposite sides of the construction pedestal, a pouring space can be enclosed by the construction pedestal, the first steel formwork and the second steel formwork, so that the concrete can be poured from the top, which is simple and convenient; by arranging the prefabricated steel structure in the pouring space, the concrete structure can be supported, and the bonding force between the concretes can be enhanced; by combining the first reinforcing pipe, the second reinforcing pipe and the third reinforcing pipe to form a support framework, the first steel formwork and the second steel formwork can be effectively fixed, and the continuous pouring is guaranteed. By the formwork device, the application of large mechanical equipment such as a gantry crane is effectively reduced, the large bridge beam prefabrication field is avoided to be arranged, and the prefabrication cost is reduced, so that the device is greatly suitable for the preparation of small and medium-sized bridge prefabricated hollow beams. BRIEF DESCRIPTION OF DRAWINGS
[0017] Figure 1 A sectional view of a small and medium-sized bridge prefabricated hollow beam formwork device is provided for the embodiment of the utility model;
[0018] Figure 2 A top view of a small and medium-sized bridge prefabricated hollow beam formwork device is provided for the embodiment of the utility model;
[0019] Marked in the drawing: 1, construction pedestal; 2, first steel formwork; 3, second steel formwork; 4, first reinforcing pipe; 5, second reinforcing pipe; 6, third reinforcing pipe; 7, pouring space; 71, steel structure; 8, framework; 9, inclined pull rod; 10, construction runway; 101, drag hook; 11, support member; 12, mortar layer. DETAILED DESCRIPTION
[0020] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application.
[0021] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be described clearly and completely. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative labor fall within the scope of the present application. Figure 1 Figure 2 A small and medium-sized bridge prefabricated hollow beam formwork device, comprising a construction pedestal 1, a first steel formwork 2 and a second steel formwork 3, the first steel formwork 2 and the second steel formwork 3 are erected on opposite sides of the construction pedestal 1, the first steel formwork 2 is provided with a first reinforcing pipe 4, the second steel formwork 3 is provided with a second reinforcing pipe 5, in addition, a third reinforcing pipe 6 is further included, the third reinforcing pipe 6 is fixedly connected with the first reinforcing pipe 4 and the second reinforcing pipe 5 respectively, the construction pedestal 1, the first steel formwork 2 and the second steel formwork 3 enclose a pouring space 7, a prefabricated reinforcing structure 71 is arranged in the pouring space 7, an inner formwork is fixed on the prefabricated reinforcing structure 71 and can be used to support the poured concrete, the first reinforcing pipe 4, the second reinforcing pipe 5 and the third reinforcing pipe 6 are combined to form a skeleton for fixing the first steel formwork 2 and the second steel formwork 3. In this way, the first steel formwork 2 and the second steel formwork 3 are arranged on opposite sides of the construction pedestal 1, so that a pouring space 7 can be enclosed by the construction pedestal 1, the first steel formwork 2 and the second steel formwork 3, and the concrete can be poured from the top, which is simple and convenient. Before pouring the concrete, release agent or cushion layer is applied on the construction pedestal 1; the prefabricated reinforcing structure 71 is arranged in the pouring space 7, so that the concrete can be supported by the prefabricated reinforcing structure 71, and the bonding force between the concretes is enhanced; the first reinforcing pipe 4, the second reinforcing pipe 5 and the third reinforcing pipe 6 are combined to form a supporting skeleton 8, so that the first steel formwork 2 and the second steel formwork 3 can be effectively fixed, and the continuous pouring is guaranteed. The formwork device of the present application effectively reduces the application of large mechanical equipment such as gantry crane, avoids the setting of large bridge beam slab prefabrication field, reduces the prefabrication cost, and is greatly suitable for the preparation of small and medium-sized bridge prefabricated hollow beams.
[0022] Specifically, one end of the first reinforcing pipe 4 is welded to the first steel formwork 2, and the other end of the first reinforcing pipe 4 is connected to one end of the third reinforcing pipe 6 through a lock buckle. In this way, by welding one end of the first reinforcing pipe 4 to the first steel formwork 2, the bonding force between the first reinforcing pipe 4 and the first steel formwork 2 is enhanced; by connecting the other end of the first reinforcing pipe 4 to one end of the third reinforcing pipe 6 through a lock buckle, the connection between the first reinforcing pipe 4 and the third reinforcing pipe 6 is achieved in a detachable manner, so that the connection position between the first reinforcing pipe 4 and the third reinforcing pipe 6 can be adjusted according to actual conditions to meet the fixing of precast beams of different sizes. In the present application, the lock buckle is a commonly used lock buckle in the art, which will not be described here.
[0023] Specifically, one end of the second reinforcing pipe 5 is welded to the second steel formwork 3, and the other end of the second reinforcing pipe 5 is connected to the other end of the third reinforcing pipe 6 through a lock buckle. In this way, by welding one end of the second reinforcing pipe 5 to the second steel formwork 3, the bonding force between the second reinforcing pipe 5 and the second steel formwork 3 is enhanced; by connecting the other end of the second reinforcing pipe 5 to the other end of the third reinforcing pipe 6 through a lock buckle, the connection between the second reinforcing pipe 5 and the third reinforcing pipe 6 is achieved in a detachable manner, so that the connection position between the second reinforcing pipe 5 and the third reinforcing pipe 6 can be adjusted according to actual conditions to meet the fixing of precast beams of different sizes.
[0024] Specifically, the axial directions of the first reinforcing pipe 4 and the second reinforcing pipe 5 are perpendicular to the axial direction of the third reinforcing pipe 6. By distributing the axial directions perpendicularly, subsequent rapid installation is facilitated, and the uniformity of the stress on both ends of the third reinforcing pipe 6 is ensured. Of course, according to actual conditions and specific requirements, the axial directions of the first reinforcing pipe 4 and the second reinforcing pipe 5 can also be arranged at other angles with the axial direction of the third reinforcing pipe 6, which is not uniquely limited here.
[0025] Specifically, the precast hollow beam formwork device further comprises a pair of diagonal pull rods 9, one end of the diagonal pull rod 9 is connected to the first reinforcing pipe 4 or the second reinforcing pipe 5, and the other end of the diagonal pull rod 9 is arranged on the construction runway 10 on both sides of the construction pedestal 1. By providing a pair of diagonal pull rods 9, the wind resistance and stability of the first steel formwork 2 and the second steel formwork 3 are further enhanced. Of course, in the present embodiment, the number of diagonal pull rods 9 can also be set to other multiple, which is not uniquely limited here.
[0026] Specifically, the construction runway 10 is provided with a hook 101, and the other end of the diagonal pull rod 9 is connected to the hook 101. In this way, when it is necessary to install the diagonal pull rod 9, one end of the diagonal pull rod 9 is connected to the first reinforcing pipe 4 or the second reinforcing pipe 5, and the other end of the diagonal pull rod 9 is hung on the hook 101, which is convenient to install.
[0027] Specifically, the construction runway 10 and the construction pedestal 1 are further provided with the support 11, through which one end of the support 11 abuts against the construction runway 10, and the other end of the support 11 abuts against the first steel formwork 2 or the second steel formwork 3, so as to apply a lateral force to the first steel formwork 2 or the second steel formwork 3, and further enhance the wind resistance and stability of the first steel formwork 2 or the second steel formwork 3.
[0028] Specifically, the support 11 is a wooden piece, which is a wooden wedge support block. By selecting the wooden wedge piece, on the one hand, the two-way support of the first steel formwork 2 or the second steel formwork 3 is realized through cooperation with the third reinforcing pipe 6, and on the other hand, the toughness of the wooden wedge piece is fully utilized, so as to provide a space for the stress expansion of the first steel formwork 2 or the second steel formwork 3. Of course, in the embodiment, the support 11 can also be a steel piece or other pieces according to actual conditions and specific requirements, which are not limited herein.
[0029] Specifically, the bottom of the support 11 is further provided with the mortar layer 12, and the sum of the thicknesses of the support 11 and the mortar layer 12 is less than the thickness of the construction pedestal 1. By laying the mortar layer 12, the underground water erosion of the wooden wedge support block can be prevented, and the service life of the wooden wedge support block is affected. By the sum of the thicknesses of the support 11 and the mortar layer 12 being less than the thickness of the construction pedestal 1, the contact area of the construction runway 10 and the support 11 is increased, so as to ensure that the support 11 abuts against the first steel formwork 2 or the second steel formwork 3 well.
[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present application, but not limited. Although the present application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present application.
Claims
1. A formwork device for precast hollow beams of small and medium-sized bridges, characterized in that: The application relates to a construction formwork, which comprises a construction pedestal, a first steel formwork and a second steel formwork, the first steel formwork and the second steel formwork are erected on opposite sides of the construction pedestal, the first steel formwork is provided with a first reinforcing pipe, the second steel formwork is provided with a second reinforcing pipe, additionally, the construction formwork further comprises a third reinforcing pipe, the third reinforcing pipe is fixedly connected with the first reinforcing pipe and the second reinforcing pipe, the construction pedestal, the first steel formwork and the second steel formwork enclose a pouring space, a prefabricated reinforcing structure is arranged in the pouring space, an inner formwork is fixed on the prefabricated reinforcing structure, and the first reinforcing pipe, the second reinforcing pipe and the third reinforcing pipe are combined to form a framework for fixing the first steel formwork and the second steel formwork.
2. The small and medium-sized bridge precast hollow beam formwork device according to claim 1, characterized in that: One end of the first reinforcing pipe is welded on the first steel formwork, and the other end of the first reinforcing pipe is connected with one end of the third reinforcing pipe through a lock buckle.
3. The small and medium-sized bridge precast hollow beam formwork device according to claim 1 or 2, characterized in that: One end of the second reinforcing pipe is welded on the second steel formwork, and the other end of the second reinforcing pipe is connected with the other end of the third reinforcing pipe through a lock buckle.
4. The small and medium-sized bridge precast hollow beam formwork device according to claim 1 or 2, characterized in that: The axial directions of the first reinforcing pipe and the second reinforcing pipe are perpendicular to the axial direction of the third reinforcing pipe.
5. The small and medium-sized bridge precast hollow beam formwork device according to claim 1 or 2, characterized in that: The construction formwork further comprises a pair of inclined pull rods, one end of the inclined pull rod is connected with the first reinforcing pipe or the second reinforcing pipe, and the other end of the inclined pull rod is arranged on a construction runway on the two sides of the construction pedestal.
6. The small and medium-sized bridge precast hollow beam formwork device according to claim 5, characterized in that: A pull hook is arranged on the construction runway, and the other end of the inclined pull rod is connected with the pull hook.
7. The small and medium-sized bridge precast hollow beam formwork device according to claim 5, characterized in that: Supporting members are arranged between the construction runway and the construction pedestal.
8. The small and medium-sized bridge precast hollow beam formwork device according to claim 7, characterized in that: The bottom of the supporting member is further provided with a mortar layer.
9. The small and medium-sized bridge precast hollow beam formwork device according to claim 8, characterized in that: The sum of the thicknesses of the supporting member and the mortar layer is smaller than the thickness of the construction runway.