Quickly assembled prefabricated assembly type bridge floor structure and method

Abstract

The application discloses a prefabricated bridge deck structure and method, and belongs to the field of bridge deck prefabricated structures. The bridge deck prefabricated structure is characterized by the following steps: prefabricating a plurality of bridge deck prefabricated plates, and then splicing the first and last bridge deck prefabricated plates and pouring concrete. The L-shaped pouring channel is arranged at the top surface of the bridge deck prefabricated plate, and can quickly pour concrete into the connecting point of the two bridge deck prefabricated plates. After solidification, the bridge deck prefabricated plate surface will not have too many connecting structures. The pouring channel can pour concrete after the bridge deck prefabricated plates are completely assembled in place, and does not need to pour concrete during the assembling process, thereby ensuring that the concrete pouring time of all the bridge deck prefabricated plates is uniform, and avoiding the concrete from overflowing to the periphery or bottom surface of the bridge deck prefabricated plate during the assembling and pouring process, thereby avoiding affecting the appearance and flatness of the overall bridge deck structure.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of bridge deck prefabricated structure, and particularly relates to a prefabricated assembly type bridge deck structure and method. BACKGROUND

[0002] China is in a key stage of accelerating infrastructure construction, and bridge engineering is an important part of China's infrastructure construction. At present, the research and application of prefabricated assembly technology in China mainly focuses on the lower structure of the bridge. Many scholars have conducted in-depth research on the connection structure, implementation method and seismic performance. For the upper beam structure of the bridge, most of the projects use the construction method of hole-by-hole or segment-by-segment prefabrication, on-site hoisting and assembly. For the bridge deck, most of the existing bridges use the method of on-site pouring. This construction method reduces the pouring quality, construction efficiency and greatly increases the construction period of the bridge deck for offshore long bridge projects with limited construction platforms and Sichuan-Tibet bridge projects with poor construction environment. The prefabricated bridge deck needs to set up many connection structures to ensure the stability of the connection between the prefabricated plates, and the excessive connection structures not only affect the integrity of the bridge deck prefabricated plate, but also are inconvenient to install, which affects the construction period. Moreover, the excessive connection structures also affect the flatness of the bridge deck, and the position of the non-flat structure is prone to damage. SUMMARY

[0003] Therefore, the present application aims to provide a prefabricated assembly type bridge deck structure and method for rapid assembly, so that the prefabricated plate after connection has strong integrity and good flatness.

[0004] To achieve the above-mentioned purpose, the present application provides the following technical scheme:

[0005] The present application comprises a bridge deck prefabricated plate for head-to-tail splicing, the head and tail of the bridge deck prefabricated plate are respectively provided with an L-shaped infusion channel and a tubular channel, a plurality of L-shaped infusion channels are arranged along the side surface of the head end of the bridge deck prefabricated plate, one end of the L-shaped infusion channel is opened in the top surface of the bridge deck prefabricated plate and flush with the top surface of the bridge deck prefabricated plate, the other end is opened in the head end side surface of the bridge deck prefabricated plate and extends out of the side surface of the bridge deck prefabricated plate by a certain length, the tubular channel is arranged along the tail end side surface of the bridge deck prefabricated plate, one end of the tubular channel is opened in the tail end side surface of the bridge deck prefabricated plate and flush with the tail end of the bridge deck prefabricated plate, the other end horizontally extends into the interior of the prefabricated plate and is closed and treated, the bridge deck prefabricated plate is spliced in contact at the head and tail, the L-shaped infusion channel extends into the tubular channel, the L-shaped infusion channel and the tubular channel are infused with concrete, one end of the concrete abuts against the closed end of the tubular channel, and the other end is flush with the outer end of the L-shaped infusion channel.

[0006] Further, a tapered pin head is connected to the overlapping section of the L-shaped infusion channel and the tubular channel, a tapered pin hole is formed in the bridge deck precast slab, the tapered pin hole extends downward from the top surface of the bridge deck precast slab and penetrates the L-shaped infusion channel and the tubular channel, the tapered pin head is inserted into the tapered pin hole, the top surface of the tapered pin head is lower than the top surface of the bridge deck precast slab, and the upper end of the tapered pin head is closed by concrete flush with the bridge deck precast slab.

[0007] Further, the precast structure comprises a top frame and connecting steel bars, the connecting steel bars are connected between the closed ends of the L-shaped infusion channel and the tubular channel, the bottom surface of the top frame is rotationally provided with a plurality of blocking discs, the blocking discs are threadedly connected to the upper end of the L-shaped infusion channel, a plurality of connecting tapered heads are fixed to the top frame, a tapered hollow tube is arranged on the tubular channel, the tapered hollow tube is connected to the overlapping section of the tubular channel and the L-shaped infusion channel, and a tapered pin hole is formed in the tapered hollow tube.

[0008] Further, a hexagonal counterbore is formed in the top surface of the blocking disc.

[0009] Further, a sealing ring is arranged on the outer side of the extended end of the L-shaped infusion channel.

[0010] The application further discloses a connecting method of the precast assembled bridge deck structure, and the steps are as follows.

[0011] S1: fixing the precast structure, the steel bars, the L-shaped infusion channel and the tubular channel in a mold, and pouring concrete after the fixing is completed;

[0012] S2: after the bridge deck precast slab is solidified, the bridge deck precast slab is transported to the construction site, is pulled by a crane and is placed on the bridge deck;

[0013] S3: the bridge deck precast slab is spliced, the L-shaped infusion channel is connected to the tubular channel, the tapered pin head is inserted into the tapered pin hole, a nail head is placed on the tapered pin head, the tapered pin head is connected to the tapered pin hole by beating the nail head, and the tapered pin head is stably connected to the tapered pin hole;

[0014] S4: concrete is infused into the L-shaped infusion channel and the remaining hole of the tapered pin hole, and is smoothed, and the assembly of the bridge deck structure is completed after the concrete is solidified.

[0015] The application has the following beneficial effects:

[0016] 1: The bridge deck precast slab can be quickly spliced and reinforced on the construction site by precasting a plurality of bridge deck precast slabs, splicing the first and last bridge deck precast slabs and infusing concrete, the concrete infusion time of all the bridge deck precast slabs is unified, and the appearance and flatness of the overall bridge deck structure are not affected.

[0017] 2. The tapered pin head is arranged to connect the L-shaped infusion channel and the tubular channel together, avoiding the separation of the small gap between the two bridge precast slabs during the pouring process of the concrete; the tapered pin hole is closed by the concrete, and after the concrete solidifies, the surface of the bridge precast slab is smooth and has no holes, ensuring the integrity of the bridge structure.

[0018] 3. By arranging the prefabricated structure, a plurality of L-shaped infusion channels and tubular channels are connected together through the upper frame and connecting steel bars, so that they remain integral and fixed in position during infusion, and the connecting steel bars are arranged to fix the relative position between the L-shaped infusion channel and the tubular channel, ensuring the assembly between the subsequent bridge precast slabs.

[0019] 4. Through the prefabrication and assembly of the bridge precast slab, the bridge surface can be quickly paved with panels, improving the paving efficiency of the bridge surface.

[0020] Other advantages, objects and features of the present application will be set forth in the following specification and will be apparent from the description thereof or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the specification. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to make the purposes, technical solutions and beneficial effects of the present application clearer, the present application provides the following drawings for illustration:

[0022] Figure 1 It is a structure diagram of the bridge precast slab of the embodiment of the present application;

[0023] Figure 2 It is a connection sectional view of the bridge precast slab of the embodiment of the present application;

[0024] Figure 3 It is a structure diagram of the prefabricated structure of the embodiment of the present application;

[0025] Figure 4 It is a sectional view of the prefabricated structure of the embodiment of the present application;

[0026] In the drawings, the following marks are used: 1, bridge precast slab; 2, L-shaped infusion channel; 21, sealing ring; 3, tubular channel; 31, tapered hollow tube; 4, tapered pin head; 5, tapered pin hole; 6, prefabricated structure; 61, upper frame; 611, blocking disc; 612, hexagonal counterbore; 613, connecting tapered head; 62, connecting steel bar. DETAILED DESCRIPTION

[0027] As Figures 1 to 4As shown, the present application provides a prefabricated bridge deck structure which can be quickly assembled, comprising bridge deck prefabricated boards 1 for end-to-end splicing, the bridge deck prefabricated boards 1 being directly cast and formed in a factory and transported to a construction site by a transport vehicle, such as Figure 1 and Figure 2 As shown, the bridge deck prefabricated boards 1 are respectively provided with L-shaped infusion channels 2 and tubular channels 3 at the ends, a plurality of the L-shaped infusion channels 2 are arranged along the end side of the bridge deck prefabricated boards 1, one end of the L-shaped infusion channel 2 is opened in the top surface of the bridge deck prefabricated board 1 and flush with the top surface of the bridge deck prefabricated board 1, the other end is opened in the end side of the bridge deck prefabricated board 1 and extends out of the side surface of the bridge deck prefabricated board 1 by a certain length, and a sealing ring 21 is further arranged outside the extended end of the L-shaped infusion channel 2; the tubular channels 3 are arranged along the end side of the bridge deck prefabricated boards 1, one end of the tubular channel 3 is opened in the end side of the bridge deck prefabricated board 1 and flush with the end of the bridge deck prefabricated board 1, the other end horizontally extends into the interior of the prefabricated board and is closed, and the bridge deck prefabricated boards 1 are end-to-end spliced, wherein the outer diameter of the L-shaped infusion channel 2 is equal to the inner diameter of the tubular channel 3, the L-shaped infusion channel 2 forms a continuous closed inner cavity after extending into the tubular channel 3, the L-shaped infusion channel 2 extends into the tubular channel 3, and the L-shaped infusion channel 2 and the tubular channel 3 are infused with concrete, one end of the concrete abuts against the closed end of the tubular channel 3, and the other end is flush with the outer end of the L-shaped infusion channel 2, and after the concrete solidifies, the bridge deck prefabricated boards 1 connected at the ends are stably connected to each other.

[0028] The above bridge deck structure can quickly splice and reinforce the bridge deck prefabricated boards 1 at the construction site by prefabricating a plurality of bridge deck prefabricated boards 1 and splicing the ends of the bridge deck prefabricated boards 1 and infusing concrete, the L-shaped infusion channel 2 is arranged at one end of the bridge deck prefabricated board 1, can quickly infuse concrete to the connection point of the two bridge deck prefabricated boards 1, and after solidification, there are no excessive connection structures on the surface of the bridge deck prefabricated boards 1, the infusion channel can infuse concrete after the bridge deck prefabricated boards 1 are completely assembled, without infusing concrete during the assembly process, ensuring that the concrete infusion time of all bridge deck prefabricated boards 1 is uniform, and avoiding the concrete from overflowing to the periphery or bottom surface of the bridge deck prefabricated boards 1 in the case of splicing and infusing at the same time, thereby avoiding affecting the appearance and flatness of the overall bridge deck structure.

[0029] In a further scheme, as Figure 2As shown, the bridge deck precast slab 1 further comprises a tapered pin head 4 connected to the overlapping section of the L-shaped infusion channel 2 and the tubular channel 3, a tapered pin hole 5 is formed in the bridge deck precast slab 1 and extends downward from the top surface of the bridge deck precast slab 1, passing through the L-shaped infusion channel 2 and the tubular channel 3, the tapered pin head 4 is inserted into the tapered pin hole 5, the height of the tapered pin hole 5 is set higher than that of the tapered pin head 4, so that the top surface of the tapered pin head 4 is lower than the top surface of the bridge deck precast slab 1, and the upper end of the tapered pin head 4 is closed by concrete flush with the bridge deck precast slab 1.

[0030] In the above structure, the tapered pin head 4 is provided, and the tapered pin head 4 connects the L-shaped infusion channel 2 and the tubular channel 3 together by being inserted into the tapered pin hole 5, so as to avoid separation of the small gap between the two bridge deck precast slabs 1 during pouring of the concrete; the tapered pin hole 5 can be hammered into the tapered pin hole 5, so that the L-shaped infusion channel 2 and the tubular channel 3 are more stably connected together, and the height of the tapered pin hole 5 is set higher than that of the tapered pin head 4, so that the top surface of the tapered pin head 4 is lower than the top surface of the bridge deck precast slab 1, and the tapered pin hole 5 is closed by concrete, so that the surface of the bridge deck precast slab 1 is smooth and free of holes after the concrete solidifies, thereby ensuring the integrity of the bridge deck structure.

[0031] In a further aspect, as shown in Figure 3 and Figure 4 The bridge deck precast slab 1 further comprises a prefabricated structure 6 for prefabricating the bridge deck precast slab 1, the prefabricated structure 6 comprises an upper frame 61 and connecting steel bars 62, the upper frame 61 can be a steel plate or an iron frame structure, the connecting steel bars 62 are connected between the closed ends of the L-shaped infusion channel 2 and the tubular channel 3, and the connecting steel bars 62 can also be arranged between the L-shaped infusion channels 2 and the tubular channels 3, the upper surface of the upper frame 61 is rotatably provided with a plurality of blocking discs 611, the top surface of the blocking disc 611 is provided with a hexagonal counterbore 612, the blocking disc 611 is threadedly connected to the upper end of the L-shaped infusion channel 2, and a plurality of connecting tapered heads 613 are fixed to the upper frame 61, a tapered hollow tube 31 is further arranged on the tubular channel 3, the tapered hollow tube 31 is connected to the overlapping section of the tubular channel 3 and the L-shaped infusion channel 2, and the tapered hollow tube 31 forms the tapered pin hole 5 inside.

[0032] In the structure, the prefabricated structure 6 is arranged, the several L-shaped infusion channels 2 and the tubular channels 3 are connected together through the upper frame 61 and the connecting steel bars 62, so that the whole and the position are fixed during the infusion process, the connecting steel bars 62 are arranged for fixing the relative positions between the L-shaped infusion channels 2 and the tubular channels 3, ensuring the assembly between the subsequent bridge deck prefabricated slabs 1, and the connecting steel bars 62 can also be used for the overall reinforcement of the bridge deck prefabricated slab 1; the upper frame 61 is used for hoisting the L-shaped infusion channels 2 and the tubular channels 3 to the positions during the concrete pouring process of the bridge deck prefabricated slab 1, and further fixing the positions of the L-shaped infusion channels 2 and the tubular channels 3, the tapered hollow pipe 31 communicated with the tubular channel 3 can assist in forming the tapered pin hole 5, the blocking disc 611 and the connecting tapered head 613 are both used for fixing the frame structure and closing the infusion port and the tapered pin hole 5, so as to avoid the infusion port and the tapered pin hole 5 being blocked by the concrete during the pouring process; when the poured concrete is solidified and formed, the blocking disc 611 is rotated to be removed from the port of the L-shaped infusion channel 2, the upper frame 61 is moved upward, the infusion port of the L-shaped infusion channel is leaked, the connecting tapered head 613 in the tapered hollow pipe 31 is removed, and the tapered pin hole 5 is leaked, so that the formed bridge deck prefabricated slab 1 is obtained.

[0033] The application further discloses a connecting method of the prefabricated assembly type bridge deck structure which is quickly assembled, and the steps are as follows.

[0034] S1: the prefabricated structure 6, the steel bars, the L-shaped infusion channels 2 and the tubular channels 3 are fixed in the mold, and after the fixing is completed, the concrete is poured;

[0035] S2: after the bridge deck prefabricated slab 1 is solidified and formed, the bridge deck prefabricated slab 1 is transported to the construction site, is pulled by a crane and is placed on the bridge deck;

[0036] S3: the bridge deck prefabricated slab 1 is finally connected and spliced, the L-shaped infusion channels 2 are connected with the tubular channels 3, the tapered pin head 4 is inserted into the tapered pin hole 5, the nail head is placed on the tapered pin head 4, the tapered pin head 4 is connected with the tapered pin hole 5 by hammering the nail head, and the connection is stable;

[0037] S4: the concrete is infused in the remaining holes of the L-shaped infusion channels 2 and the tapered pin hole 5, and is leveled, and after the concrete is solidified and formed, the assembly of the bridge deck structure is completed.

[0038] Through the prefabrication and assembly of the bridge deck prefabricated slab 1, the bridge deck can be quickly paved with the slabs, and the paving efficiency of the bridge deck is improved.

[0039] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the application rather than limit the application, and although the application has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in the form and details without departing from the scope defined by the claims of the application.

Claims

1. A prefabricated bridge deck structure that can be assembled quickly, characterized in that: The bridge deck includes precast slabs (1) for end-to-end splicing. Each precast slab (1) has an L-shaped infusion channel (2) and a tubular channel (3) at its ends. Several L-shaped infusion channels (2) are arranged along the side of the first end of the precast slab (1). One end of each L-shaped infusion channel (2) is located on the top surface of the precast slab (1) and flush with it. The other end is located on the side of the first end of the precast slab (1) and extends a short distance from it. The tubular channels (3) are arranged along the side of the last end of the precast slab (1). One end of the channel (3) is opened on the side of the tail end of the precast bridge deck slab (1) and is flush with the tail end of the precast bridge deck slab (1). The other end extends horizontally into the interior of the precast bridge deck slab (1) and is sealed. The precast bridge deck slab (1) is joined at the tail end. The L-shaped pouring channel (2) extends into the tubular channel (3). Concrete is poured into the L-shaped pouring channel (2) and the tubular channel (3). One end of the concrete abuts against the closed end of the tubular channel (3), and the other end is flush with the outer end of the L-shaped pouring channel (2). It also includes a connecting link between the L-shaped pouring channel (2) and the tubular channel (3). The bridge deck precast slab (1) has a conical pin head (4) and a conical pin hole (5) on it. The conical pin hole (5) extends downward from the top surface of the bridge deck precast slab (1), passes through the L-shaped infusion channel (2) and the tubular channel (3), and the conical pin head (4) is inserted into the conical pin hole (5). The top surface of the conical pin head (4) is lower than the top surface of the bridge deck precast slab (1). The upper end of the conical pin head (4) is sealed with concrete flush with the bridge deck precast slab (1). The bridge deck precast slab (1) also includes a precast structure (6), which includes an upper frame (61) and connecting steel bars (62). (62) Connected between the closed end of the L-shaped infusion channel (2) and the tubular channel (3), the bottom surface of the upper frame (61) is provided with a plurality of blocking discs (611), the blocking discs (611) are threadedly connected to the upper port of the L-shaped infusion channel (2), the upper frame (61) is also fixed with a plurality of connecting cones (613), the tubular channel (3) is also provided with a conical hollow tube (31), the conical hollow tube (31) connects the overlapping section of the tubular channel (3) and the L-shaped infusion channel (2), and a conical pin hole (5) is formed inside the conical hollow tube (31).

2. The prefabricated bridge deck structure for rapid assembly according to claim 1, characterized in that: The top surface of the blocking disc (611) is provided with a hexagonal countersunk hole (612).

3. The prefabricated bridge deck structure for rapid assembly according to claim 1, characterized in that: The L-shaped infusion channel (2) is also provided with a sealing ring (21) on the outside of the extended end.

4. A connection method for a rapidly assembled prefabricated bridge deck structure, employing the rapidly assembled prefabricated bridge deck structure described in claim 1, characterized in that: S1: Fix the precast structure (6), reinforcing bars, L-shaped grouting channel (2) and tubular channel (3) in the mold, and pour concrete after fixing; S2: After the precast bridge deck slabs (1) have solidified, they are transported to the construction site and placed on the bridge deck by a crane. S3: Splice the bridge deck precast slabs (1) end to end, connect the L-shaped infusion channel (2) with the tubular channel (3), insert the conical pin (4) into the conical pin hole (5), place the nail head on the conical pin (4), hammer the nail head, and connect the conical pin (4) and the conical pin hole (5) securely. S4: Pour concrete into the remaining holes of the L-shaped pouring channel (2) and the conical pin hole (5), and smooth it out. Once it solidifies and takes shape, the assembly of the bridge deck structure is completed.

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