Continuous rigid frame bridge side span cast-in-place prepressing device

Abstract

The utility model relates to the technical field of bridge construction, in particular to a continuous rigid frame bridge side span cast-in-place pre-pressing device which comprises a cover beam, a support structure is installed on the side portion of the cover beam, a plurality of distribution beams distributed at equal intervals are installed on the support structure, a bottom formwork is installed on the distribution beams, and a side formwork is installed on the bottom formwork. The support structure comprises a plurality of first hanging rods penetrating through the side portion of the cover beam, the tops and the bottoms of the first hanging rods are connected with first cross beams, the first cross beams located at the tops of the first hanging rods are installed on the side portion of the cover beam, the first cross beams located at the bottoms of the first hanging rods are installed on the inner side of an assembly type triangular support, and a plurality of sets of first bailey beams are installed on the assembly type triangular support. The continuous rigid frame bridge side span cast-in-place pre-pressing device is easy and convenient to install integrally, the construction time is short, installation can be completed within two days, then the high-altitude operation time can be shortened, and the construction risk can be reduced; materials of all parts of the support can be recycled, the utilization rate is high, the overall bearing capacity is high, and the application range is large.

Description

Technical Field

[0001] The utility model relates to the technical field of bridge construction, in particular to a cast-in-place preloading device for a side span of a continuous rigid frame bridge. Background Art

[0002] The cast-in-place prestressing device for the side span of a rigid frame bridge refers to a device that uses prestressing technology to prestress the cast-in-place concrete bridge in a prefabricated cast-in-place box beam or concrete T-beam bridge structure in order to increase the bearing capacity, durability and stability of the structure and shorten the construction period. During the cast-in-place construction of the side span of a rigid frame bridge, the existing prestressing device requires pre-embedded triangular brackets, resulting in a long high-altitude construction time and high cost; and the materials used cannot be reused, resulting in a waste of resources. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a cast-in-place preloading device for the side span of a continuous rigid frame bridge, which solves the technical problems of long high-altitude construction time and low material turnover rate.

[0004] In order to solve the above technical problems, the utility model provides the following technical solutions: a cast-in-place preloading device for the side span of a continuous rigid frame bridge, comprising a cap beam, a support structure is installed on the side of the cap beam, a plurality of equally spaced distribution beams are installed on the support structure, a bottom template is installed on the distribution beam, and a side template is installed on the bottom template;

[0005] The support structure includes multiple hangers 1 that pass through the side of the cap beam, and the top and bottom of the hanger 1 are connected to a crossbeam 1. The crossbeam 1 located at the top of the hanger 1 is installed on the side of the cap beam, and the crossbeam 1 located at the bottom of the hanger 1 is installed on the inner side of the assembled triangular support. Multiple groups of Bailey beams 1 are installed on the assembled triangular support, and a distribution beam is installed on the Bailey beam 1.

[0006] Preferably, a plurality of distribution beams are provided and are equidistantly distributed along the side surface of the cap beam.

[0007] Preferably, the suspension rod 1 and the assembled triangular bracket are detachably connected via a nut.

[0008] Preferably, the support structure includes multiple hangers 2 embedded in the side of the cap beam, the top and bottom of the hanger 2 are connected to the cross beam 2 and the longitudinal beam 1, the cross beam 2 is embedded in the side of the cap beam, the longitudinal beam 1 is installed on the top of multiple groups of Bailey beams 2, and multiple hangers 3 are installed on the multiple groups of Bailey beams 2, the top and bottom of the hanger 3 are connected to the longitudinal beam 2, the longitudinal beam 2 located at the bottom of the hanger 3 is installed with a steel section 1, the steel section 2 is installed on the steel section 1, and the distribution beam is installed on the steel section 2.

[0009] Preferably, the first and second steel sections are provided in plurality and are arranged in a horizontal and vertical direction.

[0010] Preferably, the Bailey beam 1 and the Bailey beam 2 are both formed by a plurality of Bailey frames connected in sequence along a straight line direction.

[0011] By means of the above technical solution, the utility model provides a cast-in-place preloading device for the side span of a continuous rigid frame bridge, which has at least the following beneficial effects:

[0012] The cast-in-place prestressing device for the side span of the continuous rigid frame bridge is easy to install as a whole and has a short construction time. It can be installed in two days, thereby reducing the time for high-altitude operations and lowering construction risks. The materials of each part of the bracket can be reused, with a high utilization rate, strong overall bearing capacity and a wide range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0014] Figure 1 This is a schematic structural diagram of a side view of a bracket structure of a first embodiment of the utility model;

[0015] Figure 2 This is a schematic structural diagram of a support structure in a front view of a first embodiment of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the connection between the suspension rod 1 and the assembled triangular bracket of the utility model;

[0017] Figure 4 This is a schematic structural diagram of the support structure of the second embodiment of the utility model from the front;

[0018] Figure 5 This is a schematic structural diagram of the support structure of the second embodiment of the utility model from the front.

[0019] Reference numerals:

[0020] 1. Cap beam; 2. Support structure; 21. Hanger rod 1; 22. Cross beam 1; 23. Assembled triangular support; 24. Operating platform; 25. Bailey beam 1; 26. Hanger rod 2; 27. Cross beam 2; 28. Longitudinal beam 1; 29. ​​Bailey beam 2; 210. Hanger rod 3; 211. Longitudinal beam 2; 212. Section steel 1; 213. Section steel 2; 3. Distribution beam; 4. Bottom formwork; 5. Side formwork. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] The cast-in-place section of the side span of a rigid frame bridge refers to the process of constructing a specific part of the beam section of the bridge by pouring concrete on site when constructing a rigid frame bridge. This construction method combines the characteristics of prefabrication and cast-in-place, aiming to improve construction efficiency and the overall quality of the bridge structure. In the construction of a rigid frame bridge, prefabricated cast-in-place box beams or concrete T beams and other components are generally used, and these components are assembled through on-site construction to form a complete bridge structure. The cast-in-place section of the side span of a rigid frame bridge refers to a specific part of this process, that is, the stage where a section of the beam or box beam is cast in-place on site. During the construction of the cast-in-place section of the side span of a rigid frame bridge, prestressed steel strands or steel cables are usually laid in the components according to the design requirements, and the components are given sufficient bearing capacity by tensioning the prestress. Then, after the prestressed steel strands or steel cables are fixed, concrete is poured on site to form the cross section of the beam section. This completes the construction of the cast-in-place section of the side span of a rigid frame bridge.

[0023] Embodiment 1:

[0024] Based on the technical defects of the existing technology, such as long construction time at high altitude and low material turnover rate, please refer to Figure 1-Figure 3 The utility model provides a cast-in-place prestressing device for the side span of a continuous rigid frame bridge. The overall installation is simple and the construction time is short. The installation can be completed in two days, which can reduce the time of high-altitude operations and reduce construction risks. The materials of each part of the support can be reused with high utilization rate, including a cap beam 1, a support structure 2 is installed on the side of the cap beam 1, a plurality of equidistantly distributed distribution beams 3 are installed on the support structure 2, a bottom formwork 4 is installed on the distribution beam 3, and a side formwork 5 is installed on the bottom formwork 4. Now the support structure 2 is installed on the cap beam 1, and then the distribution beam 3 is laid and installed on the support structure 2, and finally the bottom formwork 4 and the side formwork 5 are installed on the distribution beam 3. After installation, concrete pouring can be carried out.

[0025] To reduce construction time, please refer to Figure 1-Figure 2 The support structure 2 includes a plurality of hangers 21 penetrating through the side of the cap beam 1, and the top and bottom of the hanger 21 are connected with a cross beam 22. The cross beam 22 located at the top of the hanger 21 is installed on the side of the cap beam 1, and the cross beam 22 located at the bottom of the hanger 21 is installed on the inner side of the assembled triangular support 23. A plurality of groups of Bailey beams 25 are installed on the assembled triangular support 23, and a distribution beam 3 is installed on the Bailey beam 25. The assembled triangular support 23 is installed using the hanger 21 and the cross beam 22, and then the Bailey beam 25 is laid and installed on the assembled triangular support 23, and finally the distribution beam 3 is installed on the Bailey beam 25.

[0026] To ensure that the prestress can be transferred to the beam body, multiple distribution beams 3 are provided and are evenly distributed along the side surface of the cap beam 1; in a rigid frame bridge, prestressed steel strands or cables are usually transmitted through the distribution beams 3, which effectively transfer the prestressed force to the beam body, enhance the force-bearing performance of the beam body, and improve the bearing capacity and stability of the bridge.

[0027] In order to improve the turnover rate of materials, the suspension rod 21 and the assembled triangular bracket 23 are detachably connected via nuts; the assembled triangular bracket 23 can be disassembled for repeated use.

[0028] Embodiment 2:

[0029] Another implementation method is proposed based on Example 1. Please refer to Figure 4-Figure 5 On the basis of the first embodiment, the support structure 2 includes a plurality of suspension rods 26 embedded in the side of the cap beam 1, the top and bottom of the suspension rods 26 are connected with a cross beam 27 and a longitudinal beam 1 28, the cross beam 27 is embedded in the side of the cap beam 1, the longitudinal beam 1 28 is installed on the top of a plurality of groups of Bailey beams 29, and a plurality of suspension rods 3 210 are installed on the plurality of groups of Bailey beams 29, the top and bottom of the suspension rods 3 210 are connected with a longitudinal beam 211, and the longitudinal beam 211 at the bottom of the suspension rods 3 210 is connected with a longitudinal beam 212. Beam 211 is installed with steel section 1 212, steel section 213 is installed on steel section 1 212, and distribution beam 3 is installed on steel section 213; first, pre-embed hanger 2 26 on cap beam 1, then install Bailey beam 29 through hanger 26 and longitudinal beam 1 28, install hanger 3 210 on Bailey beam 29, use hanger 3 210 and longitudinal beam 2 211 to hang and install steel section 1 212 and steel section 213, and finally install distribution beam 3.

[0030] In order to improve the supporting effect of the distribution beam 3, multiple steel sections 1 212 and steel sections 213 are provided and arranged horizontally and vertically; the lateral bearing capacity of the bridge can be effectively enhanced. Such a design can improve the overall stability of the bridge and increase the load-bearing capacity of the bridge.

[0031] In order to install the Bailey beam 1 25 and the Bailey beam 2 29, the Bailey beam 1 25 and the Bailey beam 2 29 are both formed by connecting a plurality of Bailey frames in sequence along a straight line direction.

[0032] It can be known from the above embodiments that: the support structure 2 is installed on the cap beam 1, and then the distribution beam 3 is laid and installed on the support structure 2, and finally the bottom formwork 4 and the side formwork 5 are installed on the distribution beam 3, and after installation, concrete pouring can be carried out.

[0033] It should be noted that the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A cast-in-situ preloading device for a side span of a continuous rigid frame bridge, comprising a cap beam (1), characterized in that: A support structure (2) is installed on the side of the cap beam (1), a plurality of equally spaced distribution beams (3) are installed on the support structure (2), a bottom template (4) is installed on the distribution beam (3), and a side template (5) is installed on the bottom template (4); The support structure (2) includes a plurality of suspension rods (21) penetrating the side of the cap beam (1), the top and bottom of the suspension rods (21) are connected to a cross beam (22), the cross beam (22) located at the top of the suspension rods (21) is installed on the side of the cap beam (1), and the cross beam (22) located at the bottom of the suspension rods (21) is installed on the inner side of an assembled triangular support (23), and a plurality of groups of Bailey beams (25) are installed on the assembled triangular support (23), and a distribution beam (3) is installed on the Bailey beam (25).

2. The cast-in-place preloading device for the side span of a continuous rigid frame bridge according to claim 1 is characterized in that: A plurality of distribution beams (3) are provided and are evenly distributed along the side surface of the cap beam (1).

3. The cast-in-place preloading device for the side span of a continuous rigid frame bridge according to claim 1 is characterized in that: The suspension rod 1 (21) and the assembled triangular bracket (23) are detachably connected via nuts.

4. The cast-in-situ preloading device for the side span of a continuous rigid frame bridge according to claim 1 is characterized in that: The support structure (2) includes a plurality of hangers 2 (26) embedded in the side of the cap beam (1), the top and bottom of the hangers 2 (26) are connected to cross beam 2 (27) and longitudinal beam 1 (28), cross beam 2 (27) is embedded in the side of the cap beam (1), longitudinal beam 1 (28) is installed on the top of a plurality of groups of Bailey beams 2 (29), a plurality of hangers 3 (210) are installed on the plurality of groups of Bailey beams 2 (29), the top and bottom of the hangers 3 (210) are connected to longitudinal beam 2 (211), longitudinal beam 1 (212) is installed on the longitudinal beam 2 (211) located at the bottom of the hangers 3 (210), steel section 2 (213) is installed on the steel section 1 (212), and distribution beam (3) is installed on the steel section 2 (213).

5. The cast-in-situ preloading device for the side span of a continuous rigid frame bridge according to claim 4 is characterized in that: The first steel section (212) and the second steel section (213) are provided in plurality and arranged in a horizontal and vertical direction.

6. The cast-in-situ preloading device for the side span of a continuous rigid frame bridge according to claim 4 is characterized in that: The Bailey beam 1 (25) and the Bailey beam 2 (29) are both formed by connecting a plurality of Bailey frames in sequence along a straight line.

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