Prefabricated assembly type I-beam bridge structure

Abstract

The utility model relates to and provides a prefabricated assembled I-shaped beam bridge structure which comprises a supporting body, a plurality of I-shaped beams are installed on the top of the supporting body, a bridge deck is installed on the tops of the I-shaped beams and composed of a plurality of deck sections, a U-shaped supporting box is arranged at one end of each deck section, and a clamping groove and a clamping block are arranged at the other end of each deck section. When the adjacent panel sections are spliced, the supporting box of one panel section is inserted into the clamping groove of the other panel section so that the clamping groove and the supporting box can define a first cast-in-place cavity, and a first cast-in-place block is poured in the first cast-in-place cavity. An auxiliary pouring template does not need to be additionally arranged, the process is simplified, and the construction efficiency is improved; and the supporting boxes can be disassembled into the clamping grooves to achieve positioning, dislocation of the adjacent panel sections is avoided, repeated adjustment during splicing is avoided, and assembling is faster.

Description

Technical Field

[0001] The utility model relates to the technical field of bridges, in particular to a prefabricated assembled I-beam bridge structure. Background Art

[0002] I-beams have many advantages such as structural stability, strong earthquake resistance and good durability. Compared with beam bridges with other cross-sections, I-beams are relatively light and easier to install, so they are widely used in bridge engineering.

[0003] At present, more and more I-beam bridges adopt prefabricated splicing. The I-beam and several panel sections constituting the bridge deck are prefabricated separately and then assembled on site, thereby shortening the construction period. In the prior art, the connection between adjacent panel sections is to cast concrete at the splicing seam. The cast-in-place concrete also requires auxiliary formwork, and there is no positioning measure between adjacent panel sections. Repeated adjustments are required during assembly to avoid misalignment. Utility Model Content

[0004] The purpose of the utility model is to provide a prefabricated assembled I-beam bridge structure to solve the above-mentioned defects of the prior art.

[0005] The embodiments of the present invention are implemented by the following technical solutions:

[0006] A prefabricated assembled I-beam bridge structure comprises a supporting body, a plurality of I-beams are installed on the top of the supporting body, a bridge deck is installed on the top of the I-beam, the bridge deck is composed of a plurality of panel sections, one end of the panel section is provided with a U-shaped support box, and the other end of the panel section is provided with a slot and a block. When adjacent panel sections are spliced, the support box of one panel section is inserted into the slot of another panel section so that the slot and the support box are enclosed to form a first cast-in-place cavity, and a first cast-in-place block is cast in the first cast-in-place cavity.

[0007] Optionally, shear ribs are provided on both end surfaces of the panel section.

[0008] Optionally, a reinforcement block is provided at the end of the shear reinforcement.

[0009] Optionally, the shear reinforcement bars at both ends of the panel section are staggered, and the heights of the shear reinforcement bars at both ends are different.

[0010] Optionally, the I-beam comprises a beam body and a plurality of groups of reinforcement members spaced apart along the length direction of the beam body, the beam body comprises two flanges and a web disposed between the flanges, each group of reinforcement members comprises two reinforcement members symmetrically disposed on both sides of the web, and the reinforcement members abut against the flanges and the web respectively;

[0011] The reinforcement is provided with at least two first connection holes running through the upper and lower parts, and second connection holes are provided on the two wing plates corresponding to the first connection holes. Connecting ribs are passed through the first connection holes and the first connection holes, and the top ends of the connecting ribs are higher than the web at the top. The panel section is provided with a second cast-in-place hole for accommodating the connecting ribs at each group of reinforcements, and a second cast-in-place block is cast in the second cast-in-place hole.

[0012] Optionally, a limiting block is provided at the top of the connecting rib.

[0013] Optionally, a surface of the reinforcement member abutting against the web is provided with a positioning hole, and the web is provided with a positioning column that cooperates with the positioning hole.

[0014] Optionally, both the first cast-in-place block and the second cast-in-place block are made of UHPC.

[0015] Optionally, the reinforcement is made of UHPC.

[0016] The technical solution of the present utility model has at least the following advantages and beneficial effects: in the present utility model, when adjacent panel sections are spliced, the support box of one panel section is inserted into the slot of another panel section, thereby forming a cast-in-place cavity for casting the first cast-in-place block. In this way, on the one hand, there is no need to set up an auxiliary casting template, which simplifies the process and improves construction efficiency. On the other hand, the support box can be removed into the slot to achieve positioning, avoiding misalignment of adjacent panel sections, that is, avoiding repeated adjustments during splicing, and assembling more quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A structural schematic diagram of a prefabricated assembled I-beam bridge structure provided by the utility model;

[0019] Figure 2 It is a schematic diagram of the connection structure between the bridge deck and the I-beam;

[0020] Figure 3 It is a structural schematic diagram of an I-beam;

[0021] Figure 4 It is the structural schematic diagram of the beam body;

[0022] Figure 5 is a structural schematic diagram of a reinforcement member;

[0023] Icons: 1-support body, 101-foundation piles, 102-capping platform, 103-pier column, 104-cap beam, 2-I-beam, 201-beam body, 2011-wing plate, 2011a-second connecting hole, 2012-web plate, 2012a-positioning column, 202-reinforcement, 2021-first connecting hole, 2022-positioning hole, 3-bridge deck, 301-panel section, 3011-support box, 3012-block, 3013-shear reinforcement, 3014-reinforcement block, 3015-second cast-in-place hole, 302-first cast-in-place cavity, 4-connecting reinforcement, 401-limiting block. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0026] In the description of the present invention, it should be noted that if the terms "upper" and "lower" appear to indicate an orientation or position relationship, they are based on the orientation or position relationship shown in the accompanying drawings, or are the orientation or position relationship in which the product of the application is usually placed when in use. This is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0027] refer to Figure 1 A prefabricated assembled I-beam bridge structure includes a supporting body 1, a plurality of I-beams 2 are installed on the top of the supporting body 1, and a bridge deck 3 is installed on the top of the I-beam 2. Those skilled in the art should know that the supporting body 1 usually includes foundation piles 101, a cap 102, a pier 103 and a cap beam 104 arranged from bottom to top, the I-beam 2 is installed on the top of the cap beam 104, and a support is provided between the I-beam 2 and the cap beam 104, and the bridge deck 3 is installed on the top of the I-beam 2. The above are all well known in the art and are not the research focus of this application, so the specific arrangement will not be repeated.

[0028] The utility model is improved on the above basis, the I-beam 2 and the bridge deck 3 are prefabricated in advance and assembled on site. Figure 2 The bridge deck 3 is composed of a plurality of panel sections 301. It should be understood that the plurality of panels are spliced ​​and assembled in sequence along the length direction of the bridge. A U-shaped support box 3011 is provided at one end of the panel section 301, and a slot block 3012 is provided at the other end of the panel section 301. When adjacent panel sections 301 are spliced, the support box 3011 of one panel section 301 is inserted into the slot of another panel section 301. The slot and the support box 3011 are combined to form a first cast-in-place cavity 302. In this way, on the one hand, there is no need to set up an auxiliary casting template, which simplifies the process and improves the construction efficiency. On the other hand, the support box 3011 can be removed into the slot to achieve positioning, thereby avoiding misalignment of adjacent panel sections 301, that is, avoiding repeated adjustments during splicing, and assembling more quickly.

[0029] A first cast-in-place block (not shown) is cast in the first cast-in-place cavity 302. After the first cast-in-place block is cast, the connection between adjacent panel sections 301 is achieved. Furthermore, the first cast-in-place block in this embodiment is made of UHPC. It should be understood that UHPC is the abbreviation of ultra-high performance concrete, sometimes also called reactive powder concrete (RPC), which is a cement-based concrete material with super mechanical properties, high toughness, ultra-high durability and excellent casting and molding properties. When used in this application, it can well improve the performance of the joints of adjacent panel sections 301.

[0030] On the basis of the above, shear bars 3013 are provided at both ends of the panel section 301 to improve the strength of the first cast-in-place block. Furthermore, reinforcing blocks 3014 are provided at the ends of the shear bars 3013. After the first cast-in-place block is cast, the reinforcing blocks 3014 can form a whole with the first cast-in-place block to prevent the adjacent panel sections 301 from being disconnected. Furthermore, the shear bars 3013 at both ends of the panel section 301 are staggered, and the heights of the shear bars 3013 at both ends are different, which better improves the strength of the first cast-in-place block.

[0031] In this embodiment, reference Figure 3-5 The I-beam 2 includes a beam body 201 and a plurality of groups of reinforcement members 202 arranged at intervals along the length direction of the beam body 201. The beam body 201 includes two flanges 2011 and a web 2012 arranged between the flanges 2011. The two flanges 2011 and the web 2012 form an I-shape and are prefabricated in advance. Each group of reinforcement members 202 includes two reinforcement members 202 symmetrically arranged on both sides of the web 2012, and the reinforcement members 202 are respectively abutted against the flanges 2011 and the web 2012. The reinforcement members 202 of this embodiment are also made of UHPC to improve the performance of the I-beam 2. The specific shape of the reinforcement member 202 is not limited. In this embodiment, its cross section is a U-shaped structure. In other embodiments, its cross section may also be a square structure, that is, similar to a rectangular tubular structure.

[0032] The reinforcement 202 is provided with two first connection holes 2021 that penetrate from top to bottom, and the two wing plates 2011 are provided with second connection holes 2011a corresponding to the first connection holes 2021, and the first connection holes 2021 and the first connection holes 2021 are provided with connection ribs 4, and the top of the connection ribs 4 is higher than the top web 2012, and the panel section 301 is provided with a second cast-in-place hole 3015 for accommodating the connection ribs 4 at each group of reinforcements 202. On this basis, it should be understood that each group of reinforcements 202 corresponds to four connection ribs 4, that is, there are four connection ribs 4 in each second cast-in-place hole 3015. Of course, in other embodiments, each reinforcement 202 can also be provided with a larger number of connection ribs 4.

[0033] The second cast-in-place hole 3015 is cast with a second cast-in-place block (not shown), which realizes the connection between the panel section 301 and the I-beam 2. Furthermore, a limit block 401 is provided at the top of the connecting rib 4, and the limit block 401 and the second cast-in-place block form a whole, so that the connection between the I-beam 2 and the panel section 301 is more stable. The second cast-in-place block of this embodiment is also made of UHPC.

[0034] In this embodiment, a positioning hole 2022 is provided on the surface of the reinforcement member 202 abutting against the web 2012, and a positioning column 2012a cooperating with the positioning hole 2022 is provided on the web 2012. Such a configuration facilitates the assembly of the reinforcement member 202 and the beam body 201 and improves efficiency.

[0035] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. For those skilled in the art, the present invention may be subject to various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A prefabricated assembled I-beam bridge structure, comprising a supporting body, a plurality of I-beams are mounted on the top of the supporting body, a bridge deck is mounted on the top of the I-beam, and the bridge deck is composed of a plurality of panel sections, characterized in that: A U-shaped support box is provided at one end of the panel section, and a slot block is provided at the other end of the panel section. When adjacent panel sections are spliced, the support box of one panel section is inserted into the slot of another panel section, so that the slot and the support box are enclosed to form a first cast-in-place cavity, and a first cast-in-place block is cast in the first cast-in-place cavity.

2. The prefabricated assembled I-beam bridge structure according to claim 1, characterized in that: Both end surfaces of the panel section are provided with shear reinforcements.

3. The prefabricated assembled I-beam bridge structure according to claim 2, characterized in that: The ends of the shear bars are provided with reinforcement blocks.

4. The prefabricated assembled I-beam bridge structure according to claim 2, characterized in that: The shear reinforcement bars at both ends of the panel section are staggered and have different heights.

5. The prefabricated assembled I-beam bridge structure according to any one of claims 1 to 4, characterized in that: The I-beam comprises a beam body and a plurality of groups of reinforcement members spaced apart along the length direction of the beam body, the beam body comprises two flanges and a web disposed between the flanges, each group of reinforcement members comprises two reinforcement members symmetrically disposed on both sides of the web, and the reinforcement members are respectively in contact with the flanges and the web; The reinforcement is provided with at least two first connection holes running through the upper and lower parts, and second connection holes are provided on the two wing plates corresponding to the first connection holes. Connecting ribs are passed through the first connection holes and the first connection holes, and the top ends of the connecting ribs are higher than the web at the top. The panel section is provided with a second cast-in-place hole for accommodating the connecting ribs at each group of reinforcements, and a second cast-in-place block is cast in the second cast-in-place hole.

6. The prefabricated assembled I-beam bridge structure according to claim 5, characterized in that: A limiting block is arranged at the top end of the connecting rib.

7. The prefabricated assembled I-beam bridge structure according to claim 5, characterized in that: A positioning hole is provided on the surface of the reinforcement member abutting against the web, and a positioning column cooperating with the positioning hole is provided on the web.

8. The prefabricated assembled I-beam bridge structure according to claim 5, characterized in that: The first cast-in-place block and the second cast-in-place block are both made of UHPC.

9. The prefabricated assembled I-beam bridge structure according to claim 5, characterized in that: The reinforcement is made of UHPC.

Images