Expansion joint structure of pedestrian overpass

Abstract

The utility model belongs to the technical field of overpass expansion joints, and particularly relates to a pedestrian overpass expansion joint structure which comprises a foundation cross bar, an expansion auxiliary part and a sealing strip, deformed steel bars distributed at equal intervals in an array mode are arranged at the bottom of the foundation cross bar, the ends of the deformed steel bars are poured in a bridge deck pavement, and bolts are arranged at the two ends of the upper side of the foundation cross bar. The sealing strip is placed on the upper surface of the foundation cross bar, the bolt penetrates through the sealing strip, and the telescopic auxiliary part is installed on the upper portion of the sealing strip and is fixed by matching the bolt with a nut; the telescopic auxiliary part comprises mounting blocks, circular through holes are formed in the mounting blocks, the distance between every two adjacent mounting blocks is equal to the distance between every two adjacent bolts, the bolts penetrate through the circular through holes, and C-shaped blocks are connected to the two sides of each mounting block. The utility model has the advantages of more convenient installation and faster disassembly and replacement speed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of overpass expansion joint, concretely relates to a pedestrian overpass expansion joint structure. BACKGROUND

[0002] Pedestrian overpass is also called pedestrian overpass, generally constructs in the section of heavy traffic, dense pedestrian, or intersection, square and railway surface, pedestrian overpass only allows the pedestrian to pass through, is used to avoid the conflict when the traffic and people flow intersect plane, guarantees the people safety to cross, in the process of building pedestrian overpass, considering the reason of thermal expansion and cold shrinkage needs to set expansion joint structure at equal intervals, thus need to use pedestrian overpass expansion joint structure, but in the long-term use of pedestrian overpass, the expansion joint gap of steel structure pedestrian overpass will appear different degrees of corrosion, thus need to replace the steel structure pedestrian overpass expansion joint structure, the existing pedestrian overpass expansion joint structure is directly poured in the reserved pedestrian overpass expansion joint gap by concrete, makes in replacing pedestrian overpass expansion joint structure, needs to cut open asphalt concrete and other roadbed structures, then re-embeds new pedestrian overpass expansion joint structure, finally pours concrete or asphalt again, makes replacing pedestrian overpass expansion joint structure more troublesome, for this utility model provides a kind of pedestrian overpass expansion joint structure. SUMMARY

[0003] The utility model aims at providing a kind of pedestrian overpass expansion joint structure, install more convenient, dismount and replace more quickly.

[0004] The technical scheme adopted by the utility model is as follows:

[0005] A kind of pedestrian overpass expansion joint structure, install the gap between bridge deck pavement inside, including base crossbar, expansion auxiliary part, sealing strip, the base crossbar bottom is equipped with the screw thread steel of equal interval array distribution, the screw thread steel end is poured in bridge deck pavement inside, the base crossbar upper side both ends are equipped with bolt, the sealing strip is placed on the base crossbar upper surface, and the bolt passes through the sealing strip, the expansion auxiliary part is installed on the sealing strip upper portion, and is fixed by screw nut cooperation bolt.

[0006] Preferably, the expansion auxiliary part includes mounting block, a circular through-hole is formed in the mounting block, the distance between adjacent two mounting blocks is equal to the distance between adjacent two bolts, the bolt passes through the circular through-hole, and C-shaped blocks are connected to the two sides of the mounting block.

[0007] Preferably, equal-interval distribution reinforcing crossbars are arranged between the two opposite C-shaped blocks, and each C-shaped block is provided with two vertically distributed support strips.

[0008] Preferably, the two C-shaped blocks are provided with staggered rectangular blocks at the upper ends opposite to each other, the rectangular blocks are integrally cast with the C-shaped blocks, rectangular notches are formed in the rectangular blocks right above the mounting blocks, and the rectangular notches are re-welded with square iron blocks after the installation of the expansion auxiliary part.

[0009] Preferably, the length of the single set of the foundation horizontal bar, the expansion auxiliary part and the sealing strip is 60 cm.

[0010] Preferably, the lower ends of the C-shaped blocks are extruded against the side portions of the sealing strips, and the side portions of the sealing strips abut against the side walls of the bridge pavement.

[0011] The utility model discloses technical effects achieved are as follows:

[0012] In the utility model, during the construction and installation, first, the foundation horizontal bar is placed in the specified position, the wood mould plate is connected at the threaded steel on the both sides of the lower part of the foundation horizontal bar, the wood mould plate is provided with the insertion hole, the threaded steel just passes through the insertion hole, the whole mould wraps the both sides of the lower part of the foundation horizontal bar and the position directly below, only part of the concrete will enter the mould interior from the insertion hole and form the foundation concrete layer of 3cm high at the mould bottom during the pouring, after the pouring is completed, the thumb mould plate does not need to be dismantled and remains between the bridge pavement and the foundation horizontal bar, the hole at the end of the whole gap structure is sealed with the sealing material at the same time, prevents the water gas from entering the interior and corroding the threaded steel, then the sealing strip is placed in the foundation horizontal bar, guarantees that the bolt passes through the sealing strip, finally, the nut is used to install the expansion auxiliary part on the foundation horizontal bar, during the installation, the round through hole on the mounting block of the expansion auxiliary part is aligned with the bolt, then the nut is screwed on the upper portion of the bolt from the rectangular notch, then the anticorrosive paint treatment is carried out, finally, the square iron block is re-welded at the rectangular notch, after a certain period of time, the corresponding welded square iron block is found according to the weld, then the nut is unscrewed to realize the dismounting of the expansion auxiliary part, after the rust removal treatment of the expansion auxiliary part, the expansion auxiliary part can be used twice, if the rust is too much, the thickness does not reach the standard after the surface rust removal, then the expansion auxiliary part is treated as waste steel and cannot be used twice, the new expansion auxiliary part is replaced, and finally the expansion auxiliary part is more convenient to dismount and install. ACCURATE DRAWINGS

[0013] Figure 1 It is the whole structure schematic diagram of the expansion joint structure of the footbridge of the utility model;

[0014] Figure 2 It is the whole structure schematic diagram of the expansion joint structure of the footbridge of the utility model; Figure 1

[0015] Figure 3 It is the whole structure schematic diagram of the expansion joint structure of the footbridge of the utility model;

[0016] Figure 4 ​It is the explosion structure schematic view of the utility model of a pedestrian overpass expansion joint structure.

[0017] In the drawings, the component list represented by each sign is as follows:

[0018] 1, bridge deck pavement; 2, base crossbar; 3, expansion auxiliary part; 4, sealing strip; 5, threaded steel; 6, bolt; 7, nut; 301, mounting block; 302, C-shaped block; 303, reinforcing crossbar; 304, support strip; 305, rectangular block; 306, square iron block. DETAILED DESCRIPTION

[0019] In order to make the purpose and advantages of the utility model more clear and explicit, the utility model is specifically described below in combination with examples. It should be understood that the following text is only used to describe one or several specific embodiments of the utility model, and does not strictly limit the protection scope of the utility model specifically requested.

[0020] As Figures 1-4 shown, a pedestrian overpass expansion joint structure is installed inside the gap between bridge deck pavements 1, comprising a base crossbar 2, an expansion auxiliary part 3 and a sealing strip 4. The base crossbar 2 is provided with threaded steels 5 arranged at equal intervals at the bottom, the threaded steels 5 are cast inside the bridge deck pavement 1 at the end, the base crossbar 2 is provided with bolts 6 at the upper side of both ends, the sealing strip 4 is placed on the upper surface of the base crossbar 2, and the bolts 6 pass through the sealing strip 4, the expansion auxiliary part 3 is installed on the upper part of the sealing strip 4, and is fixed by the cooperation of the bolts 6 and nuts 7.

[0021] As Figures 1-4 shown, in the utility model, during the construction and installation process, first, the base crossbar 2 is placed at the designated position, the threaded steels 5 at both sides of the lower part of the base crossbar 2 are connected with wooden mold plates, the wooden mold plates are provided with insertion holes, the threaded steels 5 just pass through the insertion holes, the entire mold wraps the lower part of both sides and the directly below of the base crossbar 2, during casting, only part of the concrete will enter the mold inside from the insertion hole, and a 3cm high base concrete layer is formed at the bottom of the mold. After casting is completed, the thumb mold plate does not need to be disassembled and left between the bridge deck pavement 1 and the base crossbar 2, at the same time, the hole at the end of the entire gap structure is sealed with sealing material to prevent water vapor from entering the inside and corroding the threaded steels 5, then the sealing strip 4 is placed inside the base crossbar 2, the bolts 6 pass through the sealing strip 4, and finally the expansion auxiliary part 3 is installed on the base crossbar 2 using the nuts 7.

[0022] Preferably, the telescopic auxiliary piece 3 comprises mounting blocks 301, circular through holes are formed in the mounting blocks 301, the distance between adjacent two mounting blocks 301 is equal to the distance between adjacent two bolts 6, the bolts 6 pass through the circular through holes, C-shaped blocks 302 are connected to the two sides of the mounting blocks 301, reinforcing cross bars 303 are arranged at equal intervals between the opposite two C-shaped blocks 302, each C-shaped block 302 is provided with two vertically distributed supporting strips 304, staggered rectangular blocks 305 are arranged at the opposite upper ends of the two C-shaped blocks 302, the rectangular blocks 305 are integrally cast with the C-shaped blocks 302, rectangular notches are formed in the rectangular blocks 305 located directly above the mounting blocks 301, and square iron blocks 306 are re-welded at the rectangular notches after the installation of the telescopic auxiliary piece 3.

[0023] As shown in Figures 1-4 the installation process, the circular through holes in the mounting blocks 301 of the telescopic auxiliary piece 3 are aligned with the bolts 6, then the nuts 7 are screwed on the upper portions of the bolts 6 from the rectangular notches, then the anti-corrosion paint treatment is performed, and finally the square iron blocks 306 are re-welded at the rectangular notches, after a certain period of time, the corresponding welded square iron blocks 306 are found according to the welds, then the nuts 7 are unscrewed to realize the disassembly of the telescopic auxiliary piece 3, after the rust removal treatment of the telescopic auxiliary piece 3, the telescopic auxiliary piece 3 can be reused, if the rust is too serious, the thickness does not meet the standard after the surface rust removal treatment, and the telescopic auxiliary piece 3 cannot be reused, a new telescopic auxiliary piece 3 is replaced, so that the telescopic auxiliary piece 3 is more convenient to disassemble and install.

[0024] As shown in Figures 1-4 the utility model, the reinforcing cross bars 303 and the supporting strips 304 are arranged, so that the strength of the C-shaped blocks 302 is guaranteed.

[0025] As shown in Figures 1-4 preferably, the length of the single set of base cross bars 2, the telescopic auxiliary piece 3 and the sealing strip 4 is 60cm.

[0026] In the utility model, the single set of base cross bars 2 and the telescopic auxiliary piece 3 are more convenient to transport, the single set of base cross bars 2, the telescopic auxiliary piece 3 and the sealing strip 4 can be cut to different lengths, and the width of the footbridge can be adapted.

[0027] Preferably, the opposite lower ends of the C-shaped blocks 302 extrude the side portions of the sealing strip 4, and the side portions of the sealing strip 4 abut against the side walls of the bridge deck pavement 1. The sealing strip 4 is arranged, so that the base cross bars 2 are prevented from contacting water and air, and the base cross bars 2 are prevented from rusting.

[0028] As shown in Figures 1-4As shown, the working principle of the utility model is as follows: during the construction and installation process, first, the foundation crossbar 2 is placed at the designated position, the wood mold plate is connected at the threaded steel 5 at the lower sides of the foundation crossbar 2, the wood mold plate is provided with a bushing, the threaded steel 5 just passes through the bushing, the whole mold wraps the lower sides of the foundation crossbar 2 and the position directly below, during pouring, only part of the concrete will enter the mold from the bushing and form a 3cm high foundation concrete layer at the bottom of the mold. After pouring, the thumb mold plate does not need to be disassembled and left between the bridge deck pavement 1 and the foundation crossbar 2, at the same time, the hole at the end of the whole gap structure is sealed with sealing material to prevent water from entering the inside and corroding the threaded steel 5, then the sealing strip 4 is placed inside the foundation crossbar 2, the bolt 6 passes through the sealing strip 4, finally, the expansion auxiliary part 3 is installed on the foundation crossbar 2 by using the nut 7; during the installation process, the circular through hole on the mounting block 301 of the expansion auxiliary part 3 is aligned with the bolt 6, then the nut 7 is screwed on the upper part of the bolt 6 from the rectangular gap, then the anti-corrosion paint treatment is carried out, finally, the square iron block 306 is welded at the rectangular gap again, after a certain period of time, the corresponding welded square iron block 306 is found according to the weld, then the nut 7 is unscrewed to realize the disassembly of the expansion auxiliary part 3, after the rust removal treatment of the expansion auxiliary part 3, the expansion auxiliary part 3 can be used again, if the rust is too much, the thickness does not meet the standard after the surface rust removal, then the expansion auxiliary part 3 is regarded as waste steel and cannot be used again, the new expansion auxiliary part 3 is replaced, so that the expansion auxiliary part 3 is more convenient to disassemble and install.

[0029] The above only describes the preferred embodiments of the utility model, and it should be pointed out that, for ordinary skilled persons in the technical field, without departing from the principle of the utility model, a number of improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection range of the utility model. The structures, devices and operation methods not specifically described and explained in the utility model are implemented according to the conventional means in the field without special description and limitation.

Claims

1. A structure of a pedestrian overpass expansion joint, installed inside a gap between bridge deck pavements (1), characterized in that: The utility model provides a bridge expansion joint structure, including basic cross pole (2), telescopic auxiliary part (3), sealing strip (4), the bottom of basic cross pole (2) is equipped with threaded steel (5) of equal interval array distribution, threaded steel (5) end pours in bridge deck pavement (1) inside, the upper side both ends of basic cross pole (2) are equipped with bolt (6), sealing strip (4) is placed on the upper surface of basic cross pole (2), and bolt (6) passes through sealing strip (4), telescopic auxiliary part (3) is installed on the upper portion of sealing strip (4), and is fixed through the cooperation of bolt (6) and nut (7).

2. The expansion joint structure of a footbridge according to claim 1, characterized by: Telescopic auxiliary part (3) includes mounting block (301), the mounting block (301) is equipped with round through -hole, the spacing between adjacent two mounting block (301) is equal to the distance between adjacent two bolt (6), and bolt (6) passes through the round through -hole, and the both sides of mounting block (301) are connected with C character block (302).

3. The expansion joint structure of a footbridge according to claim 2, characterized by: Equal-interval distribution reinforcing cross bar (303) is arranged between opposite two C character blocks (302), and each C character block (302) is provided with two vertically distributed supporting strips (304).

4. The expansion joint structure for a footbridge according to claim 3, characterized in that: Opposite ends of two C character blocks (302) are provided with staggered distribution rectangular blocks (305), the rectangular block (305) is integrally poured with the C character block (302), the rectangular block (305) is located above the mounting block (301) and is provided with a rectangular notch, and after the installation of the telescopic auxiliary part (3), the rectangular notch is re-welded with the square iron block (306).

5. The expansion joint structure for a pedestrian overpass according to claim 1, wherein: The length of the single set of basic cross pole (2), telescopic auxiliary part (3) and sealing strip (4) is 60 cm.

6. The expansion joint structure for a footbridge according to claim 4, wherein: The lower end of the C character block (302) is pressed against the side of the sealing strip (4), and the side of the sealing strip (4) abuts against the side wall of the bridge deck pavement (1).

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