A widening structure for old bridge of highway bridge

Abstract

The utility model provides a kind of old bridge widening structure suitable for highway bridge.The old bridge widening structure suitable for highway bridge, including old bridge deck.The utility model is by installing reinforcing plate in the bottom right side of old bridge pavement and the bottom left side of new bridge pavement, the connecting groove being opened on old bridge deck, new bridge deck and two groups of reinforcing plate correspond, jointly constitute H shape structure, H shape connecting plate is installed in the connecting groove, while old bridge pavement and new bridge pavement are installed with multiple first fixed pegs, and then connecting plate is fixedly installed in connecting groove, so that old bridge deck and new bridge deck cannot be separated, this structure to facilitate construction personnel quickly realize the splicing of old bridge deck and new bridge deck, to realize the widening of old bridge deck, compared with comparative case, not only set up connecting structure between old bridge pier and new bridge pier, set up connecting structure between old bridge pavement and new bridge pavement, have stronger stability.

Description

Technical Field

[0001] This utility model belongs to the field of old bridge widening technology, and in particular relates to an old bridge widening structure suitable for highway bridges. Background Technology

[0002] A bridge generally refers to a structure erected over rivers, lakes, or seas to allow vehicles and pedestrians to pass smoothly. To adapt to the rapidly developing modern transportation industry, the term "bridge" has also been extended to refer to structures built across mountains, challenging geological conditions, or to meet other transportation needs, making travel more convenient. A bridge typically consists of a superstructure, substructure, supports, and ancillary structures. The superstructure, also known as the bridge span structure, is the main structure that crosses obstacles. The substructure includes abutments, piers, and foundations. Supports are force-transmitting devices installed at the points where the bridge span structure supports the piers or abutments. Ancillary structures include approach slabs, tapered slopes, revetments, and diversion works. Widening an existing bridge refers to the technical measures used to laterally widen an existing bridge to meet increasing traffic demands or improve load-bearing standards. Its core lies in balancing the synergistic stress of the old and new structures, reducing settlement differences, and considering both economy and construction convenience. Traditional methods include constructing new bridges on one side, adding side beams or arches, and cantilever widening of the bridge deck, applicable to different bridge types and geological conditions.

[0003] The existing authorized public account CN222834765U discloses a structure for widening old highway bridges, including an old bridge. A limiting ring for fixing is fitted onto the outer surface of the old bridge. A connecting frame is fixedly connected to the side of the limiting ring. A supporting horizontal plate is clamped to the inner wall of the clamping frame. A circular ring is fixedly connected to one end of the horizontal plate. A new bridge is clamped to the inner wall of the circular ring. A chassis is fitted onto the bottom of the new bridge. A ground-drilling structure for limiting positioning is fixedly installed at the bottom of the chassis. This structure for widening old highway bridges, through the cooperative arrangement of the limiting ring, clamping frame, horizontal plate, and circular ring, can connect the old and new bridges into a single unit, further ensuring a tighter connection between the widened new road surface and the old road surface, preventing chafing due to vehicle traffic.

[0004] The vibrations from vehicles traveling back and forth create significant gaps. However, the aforementioned bridge widening structure for highway bridges only includes a connecting structure between the old and new bridge piers, while lacking a connecting structure between the old and new road surfaces. This makes it highly susceptible to separation between the old and new road surfaces during actual use, posing a safety hazard. Therefore, it is necessary to provide a bridge widening structure suitable for highway bridges to address this problem. Utility Model Content

[0005] The technical content of this utility model is to provide a widening structure for old highway bridges.

[0006] To address the aforementioned problems, this utility model provides a structure for widening an old highway bridge, comprising an old bridge deck, an old bridge box girder installed at the bottom of the old bridge deck, an old bridge pier installed at the bottom of the old bridge box girder, an old bridge foundation installed at the bottom of the old bridge pier, a new bridge deck installed on the right side of the old bridge deck, a new bridge box girder installed at the bottom of the new bridge deck, a new bridge pier installed at the bottom of the new bridge box girder, a new bridge foundation installed at the bottom of the new bridge pier, and the bottom right side of the old bridge deck and the left side of the new bridge deck... A reinforcing plate is installed on the bottom side. The old bridge deck and the new bridge deck are connected by a connecting plate. A first fixing bolt is installed on the top of the old bridge deck and the new bridge deck. A fixing plate is installed between the old bridge pier and the new bridge pier. The fixing plate is configured as a left and right part structure. Four sets of insert plates are installed on the left side of the fixing plate. A second fixing bolt is installed on the fixing plate. Four sets of guide tubes are symmetrically installed on the foundation of the new bridge. A fixing rod is installed in the guide tube. A ground nail is installed at the bottom of the fixing rod through a connecting block.

[0007] As a further solution of this utility model, the length of the reinforcing plate is the same as the length of the old bridge deck and the new bridge deck. The reinforcing plate is fixedly installed at the bottom of the old bridge deck and the new bridge deck. Connecting grooves are formed at the top of both sets of reinforcing plates, and connecting grooves are also formed at the bottom right side of the old bridge deck and the bottom left side of the new bridge deck. The connecting grooves on the old bridge deck, the new bridge deck, and the two sets of reinforcing plates correspond to each other, forming an H-shaped structure.

[0008] The plate is configured with an H-shaped structure to fit it, and the connecting plate is inserted therein, thereby connecting the two sets of reinforcing plates laterally together.

[0009] As a further solution of this utility model, eight sets of first fixing bolts are symmetrically installed on the right side of the old bridge deck and the left side of the new bridge deck. The first fixing bolts pass through the old bridge deck, the new bridge deck, the connecting plate and the reinforcing plate, thereby fixing the connecting plate in the H-shaped connecting groove.

[0010] As a further solution of this utility model, cylindrical through grooves are provided on both sides of the fixing plate, and the inner diameter of the grooves is the same as the diameter of the old bridge pier and the new bridge pier. The right half of the fixing plate has a slot on the left side that is compatible with four sets of insert plates. The top of the insert plate is flush with the top of the fixing plate, and the bottom of the insert plate is higher than the bottom of the fixing plate, so that the insert plate can be slidably installed into the slot by vertical installation.

[0011] As a further solution of this utility model, five rows of three second fixing bolts are symmetrically installed on the fixing plate. The leftmost and rightmost two rows of second fixing bolts pass through the fixing plate and the through holes opened on the old bridge pier and the new bridge pier. The middle three rows of second fixing bolts pass through the through holes opened on the fixing plate, thereby fixing the two parts of the fixing plate together.

[0012] As a further solution of this utility model, the guide tube is fixedly installed in the through holes at the four corners of the new bridge foundation. The bottom of the guide tube is flush with the bottom of the new bridge foundation, and the top of the guide tube is higher than the top of the new bridge foundation. The diameter of the fixing rod is the same as the inner diameter of the guide tube. The top of the fixing rod is set as a T-shaped structure so that the construction personnel can make the fixing rod move downward along the guide tube by hammering.

[0013] As a further solution of this utility model, the side of the connecting block is provided with a threaded groove, and the inner side of the top of the ground nail is provided with a threaded connection structure that is compatible with it. The ground nail is set as a conical structure, and the top diameter of the ground nail is larger than the diameter of the fixing rod, so that the ground nail is difficult to move upward after being installed in the ground.

[0014] Compared with related technologies, the present invention provides a novel method for use on highway bridges.

[0015] The bridge widening structure has the following beneficial effects:

[0016] 1. This utility model involves installing reinforcing plates on the bottom right side of the old bridge deck and the bottom left side of the new bridge deck. The connecting grooves on the old bridge deck, the new bridge deck, and the two sets of reinforcing plates correspond to each other, forming an H-shaped structure. H-shaped connecting plates are installed in the H-shaped connecting grooves. Simultaneously, multiple sets of first fixing bolts are installed on the old and new bridge decks, thus fixing the connecting plates in the connecting grooves. This prevents the old and new bridge decks from separating. This structure allows construction workers to quickly splice the old and new bridge decks, thereby widening the old bridge deck. Compared to comparative cases, this device not only sets a connecting structure between the old and new bridge piers but also between the old and new bridge decks, resulting in greater stability.

[0017] 2. This utility model involves installing a fixing plate on the outside of the old bridge piers and the new bridge piers. The fixing plate is configured as a left and right part structure, and is equipped with a plate and slot structure, which facilitates the splicing and installation of the two parts of the fixing plate on the outside of the old bridge piers and the new bridge piers. At the same time, the two parts of the fixing plate are fixedly installed on the outside of the old bridge piers and the new bridge piers by multiple sets of fixing bolts, and the two parts are fixedly assembled. Thus, the old bridge piers and the new bridge piers are connected laterally by the fixing plate, making the old bridge deck and the new bridge deck relatively stable.

[0018] 3. This utility model involves installing four sets of guide pipes on the foundation of the new bridge, each containing a fixing rod. The top of the fixing rod is designed with a T-shape, allowing construction workers to drive the fixing rod downwards along the guide pipe by hammering. The bottom of the fixing rod is fitted with a ground nail via a threaded structure. The ground nail has a conical structure, allowing it to be driven into the ground when the fixing rod is hammered downwards. Thus, the four sets of fixing rods and four sets of ground nails securely fix the foundation of the new bridge to the ground. The diameter of the top of the ground nail is larger than the diameter of the fixing rod, making it difficult for the ground nail to move upwards after it is installed in the ground, thus providing a good fixation effect for the foundation of the new bridge. Attached Figure Description

[0019] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to the accompanying drawings.

[0020] Figure 1 is a top-view three-dimensional structural diagram of an old bridge widening structure applicable to highway bridges according to the present invention;

[0021] Figure 2 is a bottom-view three-dimensional structural diagram of an old bridge widening structure applicable to highway bridges according to this utility model;

[0022] Figure 3 is a schematic diagram of the bottom structure of an old bridge deck, which is applicable to the widening structure of an old bridge for highway bridges according to this utility model.

[0023] Figure 4 is a top view of the bridge pier structure of an old bridge widening structure applicable to highway bridges according to this utility model;

[0024] Figure 5 is an exploded structural diagram of the fixing plate of the present invention, which is applicable to the widening structure of old highway bridges.

[0025] Figure 6 is a side view of the fixed plate structure of the present invention, which is applicable to the widening structure of old highway bridges.

[0026] Figure 7 is a side view of the bridge pier structure of a new bridge that is suitable for widening an old highway bridge according to the present invention.

[0027] Figure 8 is an exploded structural diagram of a fixing rod of the present invention, which is applicable to the widening structure of an old highway bridge.

[0028] Figure 9 is a top view of the connecting plate structure of the old bridge widening structure applicable to highway bridges according to this utility model;

[0029] Figure 10 is a side view of the reinforcing plate structure of the present invention, which is applicable to the widening structure of old highway bridges.

[0030] In the diagram: 1. Old bridge deck; 2. Old bridge box girder; 3. Old bridge pier; 4. Old bridge foundation; 5. New bridge deck; 6. New bridge box girder; 7. New bridge pier; 8. New bridge foundation; 9. Reinforcing plate; 10. Connecting plate; 11. First fixing bolt; 12. Fixing plate; 13. Insert plate; 14. The...

[0031] 15. Fixing bolt; 16. Guide tube; 17. Fixing rod; 18. Connecting block; 19. Ground nail. Detailed Implementation

[0032] Please refer to Figure 1-10. A bridge widening structure suitable for highway bridges includes an old bridge deck 1, an old bridge box girder 2 installed at the bottom of the old bridge deck 1, an old bridge pier 3 installed at the bottom of the old bridge box girder 2, an old bridge foundation 4 installed at the bottom of the old bridge pier 3, a new bridge deck 5 installed on the right side of the old bridge deck 1, a new bridge box girder 6 installed at the bottom of the new bridge deck 5, a new bridge pier 7 installed at the bottom of the new bridge box girder 6, a new bridge foundation 8 installed at the bottom of the new bridge pier 7, a reinforcing plate 9 installed at the bottom right side of the old bridge deck 1 and the bottom left side of the new bridge deck 5, the old bridge deck 1 and the new bridge deck 5 connected by a connecting plate 10, a first fixing bolt 11 installed at the top of the old bridge deck 1 and the new bridge deck 5, and a fixing plate 12 installed between the old bridge pier 3 and the new bridge pier 7. The fixing plate 12 is configured as a left and right two-part structure. Four sets of insert plates 13 are installed on the left half of the side, and a second fixing bolt 14 is installed on the fixing plate 12. Four sets of guide tubes 15 are symmetrically installed on the new bridge foundation 8. A fixing rod 16 is installed in the guide tube 15, and a ground nail 18 is installed at the bottom of the fixing rod 16 through the connecting block 17.

[0033] Preferably, the length of the reinforcing plate 9 is the same as the length of the old bridge deck 1 and the new bridge deck 5. The reinforcing plate 9 is fixedly installed at the bottom of the old bridge deck 1 and the new bridge deck 5. The top of the two sets of reinforcing plates 9 is provided with connecting grooves. The bottom right side of the old bridge deck 1 and the bottom left side of the new bridge deck 5 are also provided with connecting grooves. The connecting grooves on the old bridge deck 1, the new bridge deck 5 and the two sets of reinforcing plates 9 correspond to each other and together form an H-shaped structure. The connecting plate 10 is set to an H-shaped structure that is adapted to it. The connecting plate 10 is inserted into it, thereby connecting the two sets of reinforcing plates 9 laterally together, and at the same time connecting the old bridge deck 1 and the new bridge deck 5 laterally together. This structure allows construction personnel to quickly splice the old bridge deck 1 and the new bridge deck 5, thereby widening the old bridge deck 1.

[0034] Preferably, eight [unclear] are symmetrically installed on the right side of the old bridge deck 1 and the left side of the new bridge deck 5.

[0035] The first fixing bolt 11 passes through the old bridge deck 1, the new bridge deck 5, the connecting plate 10 and the reinforcing plate 9, thereby fixing the connecting plate 10 in the H-shaped connecting groove formed by the old bridge deck 1, the new bridge deck 5 and the two sets of reinforcing plates 9, so that the old bridge deck 1 and the new bridge deck 5 will not separate.

[0036] Preferably, cylindrical through grooves are provided on both sides of the fixing plate 12, and the inner diameter of the grooves is the same as the diameter of the old bridge pier 3 and the new bridge pier 7. The right half of the fixing plate 12 has a slot on the left side that is compatible with four sets of insert plates 13. The top of the insert plate 13 is flush with the top of the fixing plate 12, and the bottom of the insert plate 13 is higher than the bottom of the fixing plate 12. Thus, the insert plate 13 can be slid into the slot by vertical installation, thereby vertically splicing the two parts of the fixing plate 12 together, and thus installing the fixing plate 12 on the outside of the old bridge pier 3 and the new bridge pier 7.

[0037] Preferably, five rows of three second fixing bolts 14 are symmetrically installed on the fixing plate 12. The leftmost and rightmost two rows of second fixing bolts 14 pass through the through holes opened on the fixing plate 12 and the old bridge pier 3 and the new bridge pier 7, thereby fixing the fixing plate 12 on the outside of the old bridge pier 3 and the new bridge pier 7. The middle three rows of second fixing bolts 14 pass through the through holes opened on the fixing plate 12, thereby fixing the two parts of the fixing plate 12 together. Thus, the old bridge pier 3 and the new bridge pier 7 are connected laterally by the fixing plate 12, making the old bridge deck 1 and the new bridge deck 5 relatively stable.

[0038] Preferably, the guide tube 15 is fixedly installed in the through holes at the four corners of the new bridge foundation 8. The bottom of the guide tube 15 is flush with the bottom of the new bridge foundation 8, and the top of the guide tube 15 is higher than the top of the new bridge foundation 8. The diameter of the fixing rod 16 is the same as the inner diameter of the guide tube 15. The top of the fixing rod 16 is set as a T-shaped structure so that the construction personnel can make the fixing rod 16 move downward along the guide tube 15 by hammering.

[0039] Preferably, the connecting block 17 has a threaded groove on its side, and the top inner side of the ground nail 18 has a matching threaded connection structure, so as to fix the ground nail 18 to the fixing rod.

[0040] At the bottom of the 16, the ground nail 18 is designed with a conical structure. When the fixing rod 16 is hammered downwards, the ground nail 18 can be inserted into the ground at the installation location. Thus, the new bridge foundation 8 is fixedly installed on the ground through four sets of fixing rods 16 and four sets of ground nails 18. The top diameter of the ground nail 18 is larger than the diameter of the fixing rod 16, which makes it difficult for the ground nail 18 to move upwards after it is installed in the ground, so that the fixing rod 16 has a good fixing effect on the new bridge foundation 8.

[0041] It should be noted that the device structure and accompanying drawings of this utility model mainly describe the principle of this utility model. In terms of the technical aspects of this design principle, the setting of the power mechanism, power supply system and control system of the device is not fully described. However, under the premise that those skilled in the art understand the principle of the above utility model, the specific details of its power mechanism, power supply system and control system can be clearly understood. The control method in the application document is automatic control through a controller. The control circuit of the controller can be implemented by those skilled in the art through simple programming.

[0042] All standard parts used can be purchased from the market, and can be customized according to the instructions and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the existing technology. The machinery, parts and equipment adopt conventional models in the existing technology, and the structure and principle of the components known to those skilled in the art can be known by those skilled in the art through technical manuals or conventional experimental methods.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions, and alterations can be made to these embodiments, or they can be used directly or indirectly, without departing from the principles and spirit of the present invention. In other related technical fields, the scope of the present invention is defined by the appended claims and their equivalents, and they are similarly included within the patent protection scope of the present invention.

Claims

1. A bridge widening structure suitable for highway bridges, comprising an old bridge deck (1), an old bridge box girder (2) installed at the bottom of the old bridge deck (1), an old bridge pier (3) installed at the bottom of the old bridge box girder (2), and an old bridge foundation (4) installed at the bottom of the old bridge pier (3), characterized in that: A new bridge deck (5) is installed on the right side of the old bridge deck (1). A new bridge box girder (6) is installed at the bottom of the new bridge deck (5). A new bridge pier (7) is installed at the bottom of the new bridge box girder (6). A new bridge foundation (8) is installed at the bottom of the new bridge pier (7). A reinforcing plate (9) is installed at the bottom right side of the old bridge deck (1) and the bottom left side of the new bridge deck (5). The old bridge deck (1) and the new bridge deck (5) are connected by a connecting plate (10). A first reinforcing plate (9) is installed at the top of the old bridge deck (1) and the new bridge deck (5). A fixing bolt (11) is provided. A fixing plate (12) is installed between the old bridge pier (3) and the new bridge pier (7). The fixing plate (12) is configured as a left and right part structure. Four sets of insert plates (13) are installed on the left side of the fixing plate (12). A second fixing bolt (14) is installed on the fixing plate (12). Four sets of guide pipes (15) are symmetrically installed on the foundation (8) of the new bridge. A fixing rod (16) is installed in the guide pipe (15). A ground nail (18) is installed at the bottom of the fixing rod (16) through a connecting block (17).

2. The bridge widening structure for highway bridges according to claim 1, characterized in that: The length of the reinforcing plate (9) is the same as the length of the old bridge deck (1) and the new bridge deck (5). The reinforcing plate (9) is fixedly installed at the bottom of the old bridge deck (1) and the new bridge deck (5). The top of the two sets of reinforcing plates (9) is provided with a connecting groove. The bottom right side of the old bridge deck (1) and the bottom left side of the new bridge deck (5) are also provided with connecting grooves. The connecting grooves on the old bridge deck (1), the new bridge deck (5) and the two sets of reinforcing plates (9) correspond to each other and together form an H-shaped structure. The connecting plate (10) is set to an H-shaped structure that is compatible with it and is inserted into it.

3. The bridge widening structure for highway bridges according to claim 1, characterized in that: Eight sets of first fixing bolts (11) are symmetrically installed on the right side of the old bridge deck (1) and the left side of the new bridge deck (5). The first fixing bolts (11) pass through the old bridge deck (1), the new bridge deck (5), the connecting plate (10) and the reinforcing plate (9).

4. The bridge widening structure for highway bridges according to claim 1, characterized in that: The fixing plate (12) has cylindrical through slots on both sides, the inner diameter of which is the same as the diameter of the old bridge pier (3) and the new bridge pier (7). The right half of the fixing plate (12) has slots on the left side that are compatible with the four sets of insert plates (13). The top of the insert plate (13) is flush with the top of the fixing plate (12), and the bottom of the insert plate (13) is higher than the bottom of the fixing plate (12).

5. A bridge widening structure suitable for highway bridges according to claim 1, characterized in that: Five rows of three second fixing bolts (14) are symmetrically installed on the fixing plate (12). The leftmost and rightmost two rows of second fixing bolts (14) pass through the fixing plate (12) and the through holes opened on the old bridge pier (3) and the new bridge pier (7). The middle three rows of second fixing bolts (14) pass through the through holes opened on the fixing plate (12).

6. The bridge widening structure for highway bridges according to claim 1, characterized in that: The guide tube (15) is fixedly installed in the through holes at the four corners of the new bridge foundation (8). The bottom of the guide tube (15) is flush with the bottom of the new bridge foundation (8), and the top of the guide tube (15) is higher than the top of the new bridge foundation (8). The diameter of the fixing rod (16) is the same as the inner diameter of the guide tube (15), and the top of the fixing rod (16) is set as a T-shaped structure.

7. A bridge widening structure suitable for highway bridges according to claim 1, characterized in that: The connecting block (17) has a threaded groove on its side, and the top inner side of the ground nail (18) has a threaded connection structure that matches it. The ground nail (18) is set as a conical structure, and the top diameter of the ground nail (18) is larger than the diameter of the fixing rod (16).

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