CN114775425A - Bridge deck assembly and prefabricated composite bridge and construction method thereof - Google Patents

Abstract

The invention discloses a bridge deck assembly, an assembled combined bridge and a construction method thereof. The deck slab assembly includes: the bridge deck slab comprises a plurality of prefabricated bridge deck slab units, connecting units and post-cast concrete, each prefabricated bridge deck slab unit comprises a deck slab part, extending parts and connecting parts, the upper ends of the extending parts are connected with the deck slab parts through the connecting parts, at least parts of the extending parts of two adjacent prefabricated bridge deck slab units are arranged oppositely, inter-slab joints are formed between the prefabricated bridge deck slab units, the connecting units are used for connecting the connecting parts corresponding to the two opposite extending parts, and the post-cast concrete is filled in the inter-slab joints. According to the bridge deck plate assembly provided by the embodiment of the invention, the corresponding connecting parts on the two prefabricated bridge deck plate units with the opposite extending parts are indirectly connected through the connecting units and filled in joints between the plates through the post-cast concrete, and the connecting units are simple to assemble and convenient to adjust and assemble, so that the construction difficulty of the bridge deck plate assembly is favorably reduced, and the construction speed of the bridge deck plate assembly is improved.

Description

Bridge deck assembly and prefabricated composite bridge and construction method thereof

technical field

The invention relates to the field of prefabricated composite bridges, in particular to a bridge deck assembly, a prefabricated composite bridge and a construction method thereof.

Background technique

Steel-concrete composite bridges are girder bridges formed by connecting steel beams with reinforced concrete slabs through connectors. At present, the bridge decks of steel-concrete composite bridges are often prefabricated in factories and assembled on site. The prefabricated bridge decks are connected by wet joints on site. Wet joints are the weakest and most tedious parts of construction. .

In the related art, the wet joints are mostly lapped or welded by the reinforcing bars protruding from the ends of the prefabricated bridge decks. During the construction process of the prior art, the reinforcing bars protruding from the ends of the prefabricated bridge decks often appear between the reinforcing bars . The position conflict between the steel bar and the connecting piece. Adjusting the position of the protruding steel bar on site is a very tedious step in the construction, which affects the construction speed.

SUMMARY OF THE INVENTION

The present invention aims to solve one of the above-mentioned technical problems in the prior art at least to a certain extent. Therefore, the first object of the present invention is to provide a bridge deck assembly, which can increase the construction speed of the bridge deck assembly.

The second object of the present invention is a prefabricated composite bridge having the above-mentioned bridge deck assembly.

The third object of the present invention is a construction method of a prefabricated composite bridge.

In order to achieve the above object, an embodiment of the first aspect of the present invention provides a bridge deck assembly, comprising: a plurality of prefabricated bridge deck units, each of the prefabricated bridge deck units includes a panel part, an extension part and a connecting part, the The extension part is connected to the side surface of the panel part, and the thickness of the extension part is smaller than the thickness of the panel part, and the upper end of the extension part is connected with the panel part through the connection part, wherein two adjacent ones The extension parts of the prefabricated bridge deck unit are at least partially disposed opposite to each other, and a plurality of the prefabricated bridge deck units form inter-board joints; a connection unit, the connection unit is used for connecting two opposite extension parts The corresponding connecting part; post-cast concrete, the post-cast concrete is filled in the joint between the plates.

According to the bridge deck assembly of the embodiment of the present invention, the corresponding connecting parts on the two prefabricated bridge deck units facing each other are indirectly connected through the connecting unit, and the joints between the slabs are filled with post-cast concrete, the connecting unit is easy to assemble and easy to adjust and assembly, thereby helping to reduce the construction difficulty of the bridge deck assembly and improve the construction speed of the bridge deck assembly.

According to some embodiments of the present invention, the inter-board joint comprises a first inter-board joint; the bridge deck assembly has a first direction, and the extension portion comprises a first extension portion extending along the first direction, so The connecting portion includes a first connecting sub-portion, the upper end of the first extending sub-portion is connected with the panel portion through the first connecting sub-portion, and in the first direction, two adjacent prefabricated bridges The first extending sub-units of the panel unit are oppositely arranged and spaced apart to form the first inter-panel seam; the connecting unit includes a first connecting sub-unit, and the first connecting sub-unit is provided on the first panel The first connecting sub-unit is used for connecting the first connecting sub-sections corresponding to the two first extending sub-sections facing each other in the first direction; the post-cast concrete is filled in the first connecting sub-units. A seam between boards.

According to some embodiments of the present invention, the inter-panel seam includes a second inter-panel seam; the bridge deck assembly has a second direction, the extension includes a second extension portion extending in the second direction, and the connection The upper end of the second extension part is connected with the panel part through the second connection part, and in the second direction, all parts of the adjacent two prefabricated bridge deck units The second extending sub-units are butted to form the second inter-board seam; the connecting unit includes a second connecting sub-unit, and the second connecting sub-unit is used for connecting two of the second connecting sub-units that are opposite to each other in the second direction. The second connecting subsections corresponding to the two extending subsections; the post-cast concrete is filled in the second inter-board joints.

According to some embodiments of the present invention, the first extension portion is provided with at least one first extension groove, the first extension portion has a first upper surface and a first outer side surface, and the first extension groove is located in the The first direction penetrates to the first outer surface, and the first extension groove extends to the first upper surface along the thickness direction of the first extension portion, and the groove depth of the first extension groove is less than The thickness of the first extension subsection is such that the first extension subsection forms a plurality of connected first extension subsections, the first connection subsection includes a plurality of first reinforcement bars, at least part of the first extension subsections. An upper end of an extended subsection is connected to the panel portion through the first reinforcing bar.

Further, the first connecting sub-unit includes a first annular reinforcing bar extending along the first direction and a longitudinal reinforcing bar extending along the second direction, and the first annular reinforcing bar is provided on opposite sides in the first direction. Two first extension grooves, the longitudinal reinforcing bars are adapted to be connected with the first annular reinforcing bars and/or the first reinforcing bars.

Further, the side wall of the first extending groove is a rough surface with unevenness.

According to some embodiments of the present invention, the second extension portion is provided with at least one second extension groove, the second extension portion has a second upper surface and a second outer side surface, and the second extension groove is located in the The second direction penetrates to the second outer surface, and the second extension groove extends to the second upper surface along the thickness direction of the second extension portion, and the groove depth of the second extension groove is less than The thickness of the second extension subsection is such that the second extension subsection forms a plurality of connected second extension subsections, the second connection subsection includes a plurality of second reinforcement bars, at least part of the first extension subsection. The upper ends of the two extending sub-sections are connected with the panel portion through the second reinforcing bar.

Further, the second connecting sub-unit includes a second annular reinforcing bar extending along the second direction and a transverse reinforcing bar extending along the first direction, and the second annular reinforcing bar is provided on the opposite side in the second direction. Two second extension grooves, the transverse reinforcement is suitable for connecting with the second annular reinforcement and/or the second reinforcement.

Further, the side wall of the second extending groove is a rough surface with unevenness.

In order to achieve the above object, the second aspect of the present invention provides a prefabricated composite bridge, comprising: a steel main beam and the bridge deck assembly of the above-mentioned embodiment, the prefabricated bridge deck unit is at least partially overlapped with the steel main beam. beam.

According to the prefabricated composite bridge of the embodiment of the present invention, the prefabricated bridge deck unit is at least partially overlapped with the steel main beam, and the corresponding connecting parts on the two prefabricated bridge deck units facing each other are indirectly connected through the connecting unit, and the post-cast concrete Filled in the joints between the plates, the connection unit is easy to assemble, easy to adjust and assemble, which is beneficial to reduce the construction difficulty of the prefabricated composite bridge and improve the construction speed of the prefabricated composite bridge.

In order to achieve the above purpose, the third aspect of the present invention provides a construction method for a prefabricated composite bridge, the construction method is used for the prefabricated composite bridge in the above embodiment, and the construction method includes the following steps: The prefabricated bridge deck unit: the prefabricated bridge deck unit is made of reinforced concrete; the prefabricated bridge deck unit is erected: the prefabricated bridge deck unit is erected on the steel main beam; the connection unit is installed: the opposite The connecting parts corresponding to the two extending parts are connected by the connecting unit; pouring the joint between the plates: the joint between the plates is compacted with concrete.

According to the construction method of the prefabricated composite bridge according to the embodiment of the present invention, while ensuring the joint strength, the problem of the steel bar conflict at the joints during the assembly of the prefabricated bridge deck unit is solved, and the assembly and construction of the prefabricated composite bridge is less difficult, which is beneficial to Improving the construction speed of the prefabricated composite bridge can realize the rapid construction of the prefabricated composite bridge.

Additional aspects and advantages of the present invention will be set forth, in part, from the following description, and in part will be apparent from the following description, or may be learned by practice of the invention.

Description of drawings

1 is a schematic diagram of a bridge deck assembly and a steel main beam according to an embodiment of the present invention;

2 is a schematic diagram of a prefabricated bridge deck unit according to an embodiment of the present invention;

3 is a schematic diagram of a plurality of prefabricated bridge deck units, connecting units and steel main beams assembled according to an embodiment of the present invention;

4 is a schematic diagram of the internal structure of the bridge deck assembly at the joint between the first boards;

5 is a schematic diagram of the internal structure of the bridge deck assembly at the joint between the second boards;

6 is an exploded view of a bridge deck assembly and a steel main beam according to an embodiment of the present invention;

Fig. 7 is the schematic diagram of Fig. 6 at a-a;

Fig. 8 is the schematic diagram at b-b of Fig. 6;

FIG. 9 is a flowchart of a construction method of a prefabricated composite bridge according to an embodiment of the present invention.

Reference number:

Prefabricated bridge deck unit 1, panel part 11, extension part 12, first extension part 121, first extension groove 1211, first extension sub-section 1212, first extension distribution rib 1213, second extension part 122, Two extension grooves 1221, second extension sub-sections 1222, second extension distribution ribs 1223, connecting portion 13, first connecting sub-section 131, first reinforcing bar 1311, second connecting sub-section 132, second reinforcing bar 1321, inner reinforcing bar 14. Connection unit 2, first connection sub-unit 21, first annular reinforcement 211, longitudinal reinforcement 212, first shear reinforcement 2121, first distribution reinforcement 2122, second connection sub-unit 22, second annular reinforcement 221, transverse reinforcement Reinforcing bar 222 , second shearing reinforcing bar 2221 , second distribution bar 2222 , post-cast concrete 3 , bridge deck assembly 10 , steel main beam 20 , shear connector 201 , and prefabricated composite bridge 100 .

Detailed ways

The following describes in detail the embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the terms "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", " The orientation or positional relationship indicated by "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc. is based on the orientation or positional relationship shown in the accompanying drawings, It is only for the convenience of describing the present invention and simplifying the description, not to indicate or imply that the indicated device or element must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present invention.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature defined as "first" or "second" may expressly or implicitly include one or more of that feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise expressly and specifically defined.

In the present invention, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection, an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal communication of two components or the interaction relationship between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

The bridge deck assembly 10 and the prefabricated composite bridge 100 according to the embodiments of the present invention and the construction method thereof will be described in detail below with reference to FIGS. 1 to 9 .

In some embodiments of the present invention, the first direction and the second direction may be different directions parallel to the bearing surface of the bridge deck assembly 10, for example, the first direction is the left-right direction, and the second direction is the front-rear direction. In the panel assembly 10 and the prefabricated composite bridge 100, the lateral direction of each structural member may be the left-right direction, the longitudinal direction may be the front-rear direction, and the vertical direction may be the up-down direction.

1-3, the bridge deck assembly 10 includes: a plurality of prefabricated bridge deck units 1, connecting units 2 and post-cast concrete 3, wherein:

The prefabricated bridge deck unit 1 can be prefabricated by reinforced concrete. Each prefabricated bridge deck unit 1 includes a panel part 11, an extension part 12 and a connecting part 13. The extension part 12 is connected to the side of the panel part 11, and the thickness of the extension part 12 The upper end of the extension portion 12 is connected to the panel portion 11 through the connection portion 13, which is smaller than the thickness of the panel portion 11. It is understood that at least a part of the connection portion 13 is located in the space formed by the thickness difference between the panel portion 11 and the extension portion 12. The connection portion 13 The upper end of the extension portion 12 is connected to the vertical side surface corresponding to the panel portion 11 . Optionally, both ends of the connecting portion 13 are also embedded in the interior of the panel portion 11 and the extending portion 12 , so as to help improve the bearing capacity of the connecting portion 13 .

The extension parts 12 of two adjacent prefabricated bridge deck units 1 are at least partially opposite to each other, and inter-board joints are formed between the plurality of prefabricated bridge deck units 1 . It can be understood that the extension portion 12 can be connected to at least one of the front side, rear side, left side, and right side of the panel portion 11. For two adjacent prefabricated bridge deck units 1, their respective The extension parts 12 may be partially arranged oppositely, or may be entirely arranged oppositely, and the inter-board seam may be formed in the area where the two extension parts 12 are arranged oppositely.

The connecting unit 2 can be arranged at the seam between the boards, and the connecting unit 2 is used to connect the connecting parts 13 corresponding to the two opposite extension parts 12, so that among the plurality of prefabricated bridge deck units 1, the extension parts 12 are connected at the opposite positions by connecting The unit 2 forms a connection and a force transmission structure to ensure the connection strength of the joints between the slabs, and the post-cast concrete 3 is filled in the joints between the slabs, so that the plurality of prefabricated bridge deck units 1 are connected as a whole.

It can be understood that since the connecting portion 13 on the prefabricated bridge deck unit 1 does not protrude toward the opposite side of the prefabricated bridge deck unit 1, during the construction process of assembling the bridge deck assembly 10, the connecting portion 13 will not The structures (for example, the shear connectors 201 ) conflict between the prefabricated bridge deck units 1 , thereby helping to reduce the construction difficulty of assembling the bridge deck assembly 10 . The connection unit 2 is indirectly connected, the connection unit 2 is simple to assemble, easy to adjust and assemble, and can avoid problems such as position conflicts caused by the direct connection of the connection parts 13 on the opposite prefabricated bridge deck units 1, so as to further reduce the bridge deck assembly 10. Construction difficulty during assembly.

According to the bridge deck assembly 10 of the embodiment of the present invention, the corresponding connecting parts 13 on the two prefabricated bridge deck units 1 opposite to the extension part 12 are indirectly connected through the connecting unit 2 , and the post-cast concrete 3 is filled in the joints between the slabs to connect The unit 2 is easy to assemble, easy to adjust and assemble, thereby helping to reduce the construction difficulty of the bridge deck assembly 10 and improve the construction speed of the bridge deck assembly 10 .

In some embodiments of the present invention, as shown in FIGS. 1-4 , the bridge deck assembly 10 has a first direction, the first direction may be a left-right direction, the inter-board seam includes the first inter-board seam, and the extension 12 includes a The first extension part 121 extending in the first direction, the connection part 13 includes a first connection part 131, and the upper end of the first extension part 121 is connected with the panel part 11 through the first connection part 131. In the first direction, The first extension sub-units 121 of two adjacent prefabricated bridge deck units 1 are disposed opposite to each other and spaced apart to form a first inter-board seam. The connecting unit 2 includes a first connecting sub-unit 21, which is arranged on the first For the joint between the plates, the first connecting sub-unit 21 is used to connect the first connecting sub-sections 131 corresponding to the two first extending sub-sections 121 opposite in the first direction, and the post-cast concrete 3 is filled in the first joint between the plates.

It can be understood that, in the first direction, two adjacent prefabricated bridge deck units 1 may be spaced apart, that is, the first extension subsections 121 of the two adjacent prefabricated bridge deck units 1 are spaced apart in the left and right directions, In order to arrange the shear connector 201 and other components at the joint between the first plates, and the shear connector 201 is fixed with the steel main beam 20 supporting the bridge deck assembly 10, so that the post-cast concrete 3 is filled in the joint between the first plates Afterwards, the connection strength of the steel main beam 20 of the bridge deck assembly 10 can be increased.

In some embodiments of the present invention, each of the first extension parts 121 can be at least partially overlapped with the steel main beam 20 , and the first inter-plate joint is located above the steel main beam 20 to be filled with the post-cast concrete 3 . When the joint between the first plates is used, it can be ensured that the lower end of the joint between the first plates will not leak grout without using a formwork, so as to realize rapid construction.

In some embodiments of the present invention, as shown in FIGS. 1-5 , the bridge deck assembly 10 has a second direction, the second direction may be perpendicular to the first direction, the second direction may be a front-to-rear direction, and the extension 12 includes a The second extension portion 122 extending in the second direction, the inter-board seam includes a second inter-board seam, the connecting portion 13 includes a second connecting portion 132 , and the upper end of the second extending portion 122 is connected to the panel through the second connecting portion 132 In the second direction, the second extending sub-sections 122 of two adjacent prefabricated bridge deck units 1 are butted to form a second inter-board seam. The connecting unit 2 includes a second connecting sub-unit 22, the second connecting The sub-units 22 are used for connecting the second connecting sub-sections 132 corresponding to the two second extending sub-sections 122 opposite in the second direction, and the post-cast concrete 3 is filled in the second inter-board joints.

It can be understood that, in the second direction, the second extension sub-sections 122 of two adjacent prefabricated bridge deck units 1 are abutting, and a second inter-board seam is formed above the abutting second extension sub-sections 122. When the concrete 3 is poured and filled in the joint between the second plates, it can ensure that the lower end of the joint between the second plates does not leak grout without using a formwork, so as to realize rapid construction.

In some embodiments of the present invention, the second direction may be the front-rear direction, the second direction may be the same as the extending direction of the steel main beam 20 , and the second inter-plate joints may be at least partially staggered from the steel main beam 20 .

In some embodiments of the present invention, as shown in FIGS. 1 to 8 , the first extension subsection 121 is provided with at least one first extension groove 1211 , and the extension direction of the first extension groove 1211 may be the first direction, and a plurality of The first extension grooves 1211 may be distributed at intervals in the second direction, and the spacing between any two adjacent first extension grooves 1211 may be equal. The first extension subsection 121 has a first upper surface and a first outer surface. The first outer surface The first extension portion 121 may be away from the vertical side surface of the panel portion 11 , the first extension groove 1211 penetrates to the first outer surface in the first direction, and the first extension groove 1211 extends along the thickness direction of the first extension portion 121 . To the first upper surface, that is to say, the first extension groove 1211 opens upward, and the first extension groove 1211 also opens in the first direction, so as to facilitate the installation of the first connecting sub-unit 21 and to increase the post-cast concrete 3 The combined area with the first extended subsection 121 enhances the combined effect of the post-cast concrete 3 and the first extended subsection 121 .

The groove depth of the first extension groove 1211 is smaller than the thickness of the first extension subsection 121, so that the first extension subsection 121 forms a plurality of connected first extension subsections 1212, and a plurality of connected first extension subsections 1212 The bottoms of the first extension subsections 121 are connected to each other, so that when the post-cast concrete 3 is poured and filled in the joints between the first plates, the bottom of the first extension sub-section 121 can be prevented from leaking slurry without using a formwork, and rapid construction can be achieved.

The first connecting sub-section 131 includes a plurality of first reinforcing bars 1311 , and the upper ends of at least part of the first extending sub-sections 1212 are connected to the panel part 11 through the first reinforcing bars 1311 to ensure the connection between the first extending sub-sub-section 1212 and the panel part 11 For connection strength, a plurality of first steel bars 1311 can be arranged at intervals in the second direction. The first steel bars 1311 and the inner steel bars 14 of the prefabricated bridge deck unit 1 have an integral structure, or the first steel bars 1311 and the inner steel bars 14 of the prefabricated bridge deck unit 1 have an integral structure. For connection, the inner steel bar 14 is located inside the prefabricated bridge deck unit 1, and the inner steel bar 14 can be a plurality of steel bars that are crisscrossed.

In some embodiments of the present invention, as shown in FIGS. 4 and 6 , at least one first extending distribution rib 1213 is provided at the bottom of the first extending sub-section 121 at the bottom of the first extending groove 1211 , and the first extending distribution rib 1213 may be Extending along the second direction, the first extending distribution bars 1213 may be connected with the inner reinforcing bars 14 and/or the first reinforcing bars 1311 to improve the bearing capacity of the first extending subsections 121 .

In some embodiments of the present invention, as shown in FIGS. 2-4 and 6 , the first connecting subunit 21 includes a first annular reinforcing bar 211 extending along a first direction and a longitudinal reinforcing bar 212 extending along a second direction, The first annular reinforcing bar 211 can be a closed annular reinforcing bar in the shape of a rectangle, a circle, an ellipse, a polygon, etc. The first annular reinforcing bar 211 is provided in the two first extending grooves 1211 opposite to each other in the first direction, that is, the first annular reinforcing bar 211 Both ends of a ring-shaped steel bar 211 can be set in two opposite first extension grooves 1211. The first extension grooves 1211 can provide positioning for the first ring-shaped steel bar 211 to facilitate the assembly of the first ring-shaped steel bar 211. The longitudinal steel bar 212 is suitable for In order to connect with the first annular reinforcing bar 211 and/or the first reinforcing bar 1311, that is, the longitudinal reinforcing bar 212 can be connected with the first annular reinforcing bar 211, the longitudinal reinforcing bar 212 can also be connected with the first reinforcing bar 1311, and the longitudinal reinforcing bar 212 can also be connected at the same time. Connected with the first annular reinforcing bar 211 and the first reinforcing bar 1311 , the longitudinal reinforcing bar 212 , the first annular reinforcing bar 211 and the first reinforcing bar 1311 can be bound and connected by burning wires.

In some embodiments of the present invention, as shown in FIGS. 3 , 4 and 6 , the first connecting subunit 21 includes a plurality of first annular reinforcing bars 211 and a plurality of longitudinal reinforcing bars 212 , two opposite ones in the first direction. At least one first annular steel bar 211 may be disposed in each of the first extension grooves 1211, and the first inter-plate joint includes a first connection area and a first core area, wherein the first core area is composed of the first steel bar 1311 and the first annular steel bar 211. The steel bar 211 is the area surrounded by the frame, the area of the first inter-plate joint except the first core area is the first connection area, and the plurality of longitudinal steel bars 212 are connected with the first annular steel bar 211 and the first steel bar 1311 in the first core area. The fixed connection can improve the force transmission performance between the first annular reinforcing bar 211 and the first reinforcing bar 1311, and enhance the shear resistance of the bridge deck assembly 10 at the joint between the first slabs. The plurality of longitudinal steel bars 212 are connected with the first annular steel bar 211 in the first connection area, and the plurality of longitudinal steel bars 212 in the first connection area can be distributed on the upper and lower layers of the first annular steel bar 211 to improve its fixing and force transmission effect.

In some embodiments of the present invention, as shown in FIGS. 4 and 6 , the longitudinal reinforcement bars 212 in the first core area are first shear reinforcement bars 2121 , and the longitudinal reinforcement bars 212 in the first connection area are the first distribution reinforcement bars 2122 .

In some embodiments of the present invention, the sidewall of the first extension groove 1211 is a rough surface with unevenness, which is beneficial to increase the bonding strength of the connection between the post-cast concrete 3 and the first extension portion 121 , and improve the post-cast concrete 3 . The force performance of the connection with the first extension subsection 121 .

In some embodiments of the present invention, as shown in FIG. 7 , the groove width of the first extension groove 1211 is periodically changed according to a plurality of different width values in the first direction, so that the first extension groove 1211 forms a serrated concavo-convex side wall, which facilitates the manufacture of the first extension groove 1211, increases the bonding strength of the connection between the post-cast concrete 3 and the first extension portion 121, and increases the stress at the connection between the post-cast concrete 3 and the first extension portion 121. performance.

In some embodiments of the present invention, the groove width of the first extension groove 1211 at any position is larger than the diameter of the first annular steel bar 211, so as to provide a certain space for the first annular steel bar 211 to move, so as to facilitate the adjustment of the first annular steel bar 211 position, so as to avoid positional conflict between the first annular reinforcing bar 211 and the shear connector 201, and reduce the assembly difficulty of the first annular reinforcing bar 211. It can be understood that, the groove width of the first extension groove 1211 is the dimension of the first extension groove 1211 in the second direction.

In some embodiments of the present invention, as shown in FIG. 2 and FIG. 3 , the second extension portion 122 is provided with at least one second extension groove 1221 , and the extension direction of the second extension groove 1221 may be the second direction, the second extension The extension grooves 1221 may be spaced apart in the first direction, and the spacing between any two adjacent second extension grooves 1221 may be equal. The second extension subsection 122 has a second upper surface and a second outer surface, and the second outer surface may be The second extension portion 122 is far away from the vertical side surface of the panel portion 11 , the second extension groove 1221 penetrates to the second outer surface in the second direction, and the second extension groove 1221 extends along the thickness direction of the second extension portion 122 to the first Two upper surfaces, that is to say, the second extension groove 1221 opens upward, and the second extension groove 1221 also opens in the second direction, so as to facilitate the installation of the second connecting sub-unit 22, and also facilitate the increase of the post-cast concrete 3 and the first The combined area of the two extended subsections 122 enhances the combined effect of the post-cast concrete 3 and the second extended subsections 122 .

The groove depth of the second extension groove 1221 is smaller than the thickness of the second extension subsection 122, so that the second extension subsection 122 forms a plurality of connected second extension subsections 1222, and a plurality of connected second extension subsections 1222 The bottoms of the second extension sections 122 are connected to each other, so that when the post-cast concrete 3 is poured and filled in the joint between the second slabs, the bottom of the second extended subsection 122 can be prevented from leaking slurry without using a formwork, and rapid construction can be achieved.

The second connecting sub-section 132 includes a plurality of second reinforcing bars 1321 , and at least part of the upper ends of the second extending sub-sections 1222 are connected to the panel part 11 through the second reinforcing bars 1321 , so as to ensure the connection between the second extending sub-segments 1222 and the panel part 11 . For connection strength, a plurality of second steel bars 1321 can be arranged at intervals in the first direction, the second steel bars 1321 and the inner steel bars 14 of the prefabricated bridge deck unit 1 are integrally structured, or the second steel bars 1321 and the inner steel bars 14 of the prefabricated bridge deck unit 1 For connection, the inner steel bar 14 is located inside the prefabricated bridge deck unit 1, and the inner steel bar 14 can be a plurality of steel bars that are crisscrossed.

In some embodiments of the present invention, as shown in FIG. 5 , the second extension subsection 122 is provided with at least one second extension distribution rib 1223 at the bottom of the second extension groove 1221 , and the second extension distribution rib 1223 may extend along the first The second extending distribution bar 1223 can be connected with the inner reinforcing bar 14 and/or the second reinforcing bar 1321 to increase the bearing capacity of the second extending sub-section 122 .

In some embodiments of the present invention, as shown in FIG. 2 , FIG. 3 and FIG. 5 , the second connecting sub-unit 22 includes a second annular reinforcing bar 221 extending along the second direction and a transverse reinforcing bar 222 extending along the first direction, The second annular reinforcing bar 221 may be a closed annular reinforcing bar in the shape of a rectangle, a circle, an ellipse, a polygon, etc. The second annular reinforcing bar 221 is provided in the two second extending grooves 1221 opposite in the second direction, that is, the first Both ends of the two annular reinforcing bars 221 can be arranged in two opposite second extending grooves 1221, and the second extending grooves 1221 can provide positioning for the second annular reinforcing bars 221 to facilitate the assembly of the second annular reinforcing bars 221. The transverse reinforcing bars 222 are suitable for In order to connect with the second annular reinforcement 221 and/or the second reinforcement 1321, that is, the transverse reinforcement 222 can be connected with the second annular reinforcement 221, the transverse reinforcement 222 can also be connected with the second reinforcement 1321, and the transverse reinforcement 222 can also be connected at the same time. Connected with the second annular reinforcing bar 221 and the second reinforcing bar 1321, the transverse reinforcing bar 222, the second annular reinforcing bar 221 and the second reinforcing bar 1321 can be bound and connected by burning wires.

In some embodiments of the present invention, as shown in FIG. 2 , FIG. 3 and FIG. 5 , the second connecting sub-unit 22 includes a plurality of second annular reinforcing bars 221 and a plurality of transverse reinforcing bars 222 , two opposite ones in the second direction. At least one second annular reinforcing bar 221 can be arranged in each second extending groove 1221, and the second inter-plate joint includes a second connecting area and a second core area, wherein the second core area is composed of the second reinforcing bar 1321 and the second annular reinforcing bar 221. The steel bar 221 is the area surrounded by the frame, the area of the second inter-plate joint except the second core area is the second connection area, and the plurality of transverse steel bars 222 are connected with the second annular steel bar 221 and the second steel bar 1321 in the second core area. The fixed connection can improve the force transmission performance between the second annular steel bar 221 and the second steel bar 1321, and enhance the shear resistance capacity of the bridge deck assembly 10 at the joint between the second plates. The plurality of transverse reinforcing bars 222 are connected with the second annular reinforcing bar 221 in the second connecting area, and the plurality of transverse reinforcing bars 222 in the second connecting area can be distributed on the upper and lower layers of the second annular reinforcing bar 221 to improve its fixing and force transmission effect.

In some embodiments of the present invention, as shown in FIG. 5 , the transverse reinforcement bars 222 in the second core region are second shear reinforcement bars 2221 , and the transverse reinforcement bars 222 in the second connection region are second distribution reinforcement bars 2222 .

In some embodiments of the present invention, the side wall of the second extension groove 1221 is a rough surface with unevenness, which is beneficial to increase the bonding strength of the connection between the post-cast concrete 3 and the second extension sub-section 122 , and improve the post-cast concrete 3 . The force performance of the connection with the second extension subsection 122 .

In some embodiments of the present invention, the groove width of the second extension groove 1221 is periodically changed according to a plurality of different width values in the second direction, so that the second extension groove 1221 forms a jagged concave-convex sidewall, which is beneficial to The manufacture of the second extension groove 1221 increases the bonding strength of the connection between the post-cast concrete 3 and the second extension portion 122 , and improves the mechanical performance of the connection between the post-cast concrete 3 and the second extension portion 122 .

In some embodiments of the present invention, the groove width of the second extension groove 1221 at any position is larger than the diameter of the second annular steel bar 221, so as to provide a certain movement space for the second annular steel bar 221 and facilitate the adjustment of the second annular steel bar 221 position, so as to reduce the difficulty of assembling the second annular reinforcing bar 221. It can be understood that the groove width of the second extension groove 1221 is the dimension of the second extension groove 1221 in the first direction.

It should be noted that, according to the bridge deck assembly 10 according to the embodiment of the present invention, the extension portion 12 of the prefabricated bridge deck unit 1 may only include the first extension subsection 121 , so as to form a longitudinal first extension portion 121 between the plurality of prefabricated bridge deck units 1 . There is an inter-board joint, and two adjacent prefabricated bridge deck units 1 are connected by a first connecting sub-unit 21 and post-cast concrete 3 at the first inter-board joint.

Of course, the extension portion 12 of the prefabricated bridge deck unit 1 may also include only the second extension subsection 122, so as to form a transverse second inter-board joint between the multiple prefabricated bridge deck units 1, and adjacent two prefabricated bridge deck units 1 is connected to the post-cast concrete 3 through the second connecting sub-unit 22 at the joint between the second slabs.

In addition, the extension portion 12 of the prefabricated bridge deck unit 1 may also include a first extension subsection 121 and a second extension subsection 122, so as to form a transverse and longitudinally intersecting first panel between the plurality of prefabricated bridge deck units 1 Joints and second inter-board joints, two adjacent prefabricated bridge deck units 1 pass through the first connecting sub-unit 21, the second connecting sub-unit 22 and the post-cast concrete 3 at the first and second inter-board joints connect.

Referring to FIGS. 1-8 , a prefabricated composite bridge 100 according to another embodiment of the present invention includes: a steel main beam 20 and the bridge deck assembly 10 of the above-mentioned embodiment, and the prefabricated bridge deck unit 1 is at least partially overlapped on the Steel main beam 20.

The steel main beam 20 may extend along the second direction, and at least a part of the prefabricated bridge deck units 1 oppositely arranged in the first direction may overlap the left and right ends of the top surface of the steel main beam 20, for example, in the first direction At least a part of the first extension part 121 of the prefabricated bridge deck unit 1 that is arranged oppositely upward is overlapped with the left and right ends of the top surface of the steel main beam 20, and at the same time, the top surface of the steel main beam 20 can be provided with shear force connectors 201, The shear connector 201 can improve the shear resistance of the fabricated composite bridge 100 . The connecting unit 2 and the shearing connector 201 are arranged staggered to avoid interference between the connecting unit and the shearing connector 201 and affect the assembly.

According to the prefabricated composite bridge 100 according to the embodiment of the present invention, the prefabricated bridge deck unit 1 is at least partially overlapped with the steel main beam 20 , and the corresponding connecting parts 13 on the two prefabricated bridge deck units 1 opposite to the extension part 12 are indirectly connected through the connecting unit 2 The connection unit 2 is easy to assemble and easy to adjust and assemble, thereby reducing the construction difficulty of the prefabricated composite bridge 100 and improving the construction speed of the prefabricated composite bridge 100 .

According to the construction method of the prefabricated composite bridge according to another embodiment of the present invention, the construction method is used for the prefabricated composite bridge 100 of the above-mentioned embodiment. Referring to FIG. 9 , the construction method includes the following steps:

Step S1, making a prefabricated bridge deck unit: using reinforced concrete to make a prefabricated bridge deck unit 1, wherein the prefabricated bridge deck unit 1 is a prefabricated slab different from the cast-in-place slab, so that the prefabricated bridge that has been formed can be directly used during construction. The panel unit 1 is beneficial to improve the construction speed.

Step S2, erecting the prefabricated bridge deck unit: erecting the prefabricated bridge deck unit 1 on the steel main beam 20, at least a part of the extension 12 of the prefabricated bridge deck unit 1 can overlap the top surface of the steel main beam 20, and make adjacent The extensions 12 of the two prefabricated bridge deck units 1 are arranged at least partially facing each other. Preferably, the first extension grooves 1211 or the second extension grooves 1221 of the two extending parts 12 are aligned with each other in the oppositely disposed part, so as to facilitate the assembly of the first annular reinforcing bar 211 and the second annular reinforcing bar 221 .

It should be noted that since the connecting portion 13 on the prefabricated bridge deck unit 1 does not protrude toward the opposite side of the prefabricated bridge deck unit 1, during the construction process of erecting the prefabricated bridge deck unit 1 on the steel main beam 20, the connection The part 13 will not conflict with the structure between the two prefabricated bridge deck units 1 (for example, the shear force connection 201 ), thereby helping to reduce the construction difficulty of assembling the bridge deck assembly 10 .

Step S3 , installing the connecting unit: connecting the connecting parts 13 corresponding to the two opposite extending parts 12 through the connecting unit 2 .

It should be noted that the connecting parts 13 on the two opposite prefabricated bridge deck units 1 are indirectly connected through the connecting unit 2 , the assembly between the connecting units 2 is simple, the adjustment and assembly are easy, and the connection on the opposite prefabricated bridge deck units 1 can be avoided. The problems such as the position conflict caused by the direct connection of the parts 13 can be solved, so as to further reduce the construction difficulty of the prefabricated composite bridge 100 during assembly.

Step S4, pouring the joint between the plates: the joint between the plates is compacted with concrete to form a wet joint.

According to the construction method of the prefabricated composite bridge 100 according to the embodiment of the present invention, the problem of the steel bar conflict at the joints during the assembly of the prefabricated bridge deck unit 1 is solved while ensuring the joint strength, and the assembly and construction of the prefabricated composite bridge 100 is less difficult. Therefore, it is beneficial to improve the construction speed of the prefabricated composite bridge 100, and the rapid construction of the prefabricated composite bridge 100 can be realized.

In the description of this specification, reference to the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples", etc., means a specific feature described in connection with the embodiment or example, A structure, material, or feature is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

Although the embodiments of the present invention have been shown and described above, it should be understood that the above-mentioned embodiments are exemplary and should not be construed as limiting the present invention. Embodiments are subject to variations, modifications, substitutions and variations.

Claims (11)

1. A decking assembly, comprising:

the prefabricated bridge deck units comprise deck plates, extension parts and connecting parts, the extension parts are connected to the sides of the deck plates, the thickness of each extension part is smaller than that of each deck plate, the upper ends of the extension parts are connected with the deck plates through the connecting parts, the extension parts of two adjacent prefabricated bridge deck units are at least partially arranged oppositely, and an inter-deck seam is formed between the prefabricated bridge deck units;

the connecting unit is used for connecting the connecting parts corresponding to the two opposite extending parts;

and post-cast concrete filled in the joints among the plates.

2. The deck slab assembly as defined in claim 1, wherein said inter-panel seam comprises a first inter-panel seam;

the deck panel assembly having a first direction, the extension comprising a first extension section extending in the first direction, the connection comprising a first connection section by which an upper end of the first extension section is connected to the panel section, the first extension sections of two adjacent prefabricated deck panel units being oppositely disposed and spaced apart in the first direction to form the first inter-panel joint;

the connecting unit comprises a first connecting sub-unit, the first connecting sub-unit is arranged at the seam between the first plates and is used for connecting the first connecting sub-units corresponding to the two first extending sub-units opposite to each other in the first direction;

and the post-cast concrete is filled in the joints between the first plates.

3. A bridge deck assembly as claimed in claim 1 or 2, wherein the inter-panel seams comprise a second inter-panel seam;

the bridge deck slab assembly having a second direction, the extension comprising a second extension section extending in the second direction, the connection comprising a second connection section by which an upper end of the second extension section is connected with the deck section, the second extension sections of two adjacent prefabricated deck slab units abutting in the second direction to form the second inter-slab joint;

the connecting unit comprises a second connecting sub-unit which is used for connecting the second connecting sub-units corresponding to the two second extending sub-units opposite to each other in the second direction;

and the post-cast concrete is filled in the joint between the second plates.

4. The deck assembly as recited in claim 2, wherein said first extension section is provided with at least one first extension slot, said first extension section having a first upper surface and a first outer side surface, said first extension slot extending through to said first outer side surface in said first direction, and said first extension slot extending along a thickness direction of said first extension section to said first upper surface, said first extension slot having a slot depth less than a thickness of said first extension section such that said first extension section forms a plurality of connected first extension subsections, said first connection section including a plurality of first reinforcing bars, at least a portion of an upper end of said first extension subsection being connected to said deck section by said first reinforcing bars.

5. A deck panel assembly according to claim 4, wherein the first connecting sub-unit comprises first annular reinforcing bars extending in the first direction and longitudinal reinforcing bars extending in the second direction, the first annular reinforcing bars being provided in two first extending grooves opposite in the first direction, the longitudinal reinforcing bars being adapted to connect with the first annular reinforcing bars and/or the first reinforcing bars.

6. The bridge deck assembly of claim 4, wherein the side walls of the first extension groove are rugged rough surfaces.

7. A bridge deck assembly according to claim 3, wherein the second extension section is provided with at least one second extension slot having a second upper surface and a second outer surface, the second extension slot extending through to the second outer surface in the second direction and extending in the thickness direction of the second extension section to the second upper surface, the second extension slot having a slot depth less than the thickness of the second extension section such that the second extension section forms a plurality of connected second extension sub-sections, the second connection section comprising a plurality of second reinforcing bars, at least part of the upper end of the second extension sub-section being connected to the deck section by the second reinforcing bars.

8. The deck panel assembly of claim 7, wherein the second coupling sub-unit comprises a second annular reinforcing bar extending in the second direction and a transverse reinforcing bar extending in the first direction, the second annular reinforcing bar being provided in two second extending grooves opposite in the second direction, the transverse reinforcing bar being adapted to couple with the second annular reinforcing bar and/or the second reinforcing bar.

9. The deck panel assembly of claim 7, wherein the side walls of the second extension grooves are rugged rough surfaces.

10. An assembled composite bridge, comprising:

a steel main beam;

a deck plate assembly being a deck plate assembly according to any one of claims 1 to 9, the prefabricated deck plate units being at least partially lapped to the steel main beam.

11. A construction method of a fabricated composite bridge, which is applied to the fabricated composite bridge of claim 10, comprising the steps of:

manufacturing the prefabricated bridge deck unit: manufacturing the prefabricated bridge deck unit by using reinforced concrete;

erecting the prefabricated bridge deck unit: erecting the prefabricated bridge deck units on the steel main beams;

installing the connecting unit: connecting the connecting parts corresponding to the two opposite extending parts through the connecting unit;

pouring the joints between the plates: and (5) pouring concrete to compact the joints among the plates.

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