A double-layer steel truss bridge structure

Abstract

This application relates to the field of bridge technology, and in particular to a double-layer steel truss bridge structure, comprising an upper bridge, a lower bridge, and two supporting columns erected between the upper and lower bridges. The lower bridge is supported on a lower crossbeam, and the upper bridge is supported on an upper crossbeam. The two supporting columns are erected on the lower bridge, with their tops supporting the bottom of the upper bridge. A connecting truss is provided between the two supporting columns, with its left and right ends connected to the two supporting columns, respectively. The purpose of this application is to effectively solve the problem of poor support stability of the upper bridge structure in a double-layer bridge structure.

Description

Technical Field

[0001] This application relates to the field of bridge technology, and in particular to a double-layer steel truss bridge structure. Background Technology

[0002] With the development of the world economy, urban land resources are becoming increasingly scarce, and urban bridge traffic is becoming increasingly congested. In order to alleviate traffic pressure, the application of double-deck bridge structures is becoming more and more widespread.

[0003] In related technologies, a double-deck bridge is a type of bridge with two decks, making full use of limited ground space, creating more passageways, and improving traffic efficiency. During the construction of a double-deck bridge, after the piers are built, a lower crossbeam is constructed on the piers. The lower box girder is then erected on the lower crossbeam to form the lower bridge structure. A support system is then erected on the lower bridge structure to build the upper crossbeam. Finally, box girders are erected on the upper crossbeam to form the upper bridge structure.

[0004] However, during the construction of the double-deck bridge, the upper crossbeam support system was only erected on the lower bridge structure, resulting in poor stability of the upper bridge structure. Utility Model Content

[0005] This application provides a double-layer steel truss bridge structure, the purpose of which is to effectively solve the problem of poor support stability of the upper bridge body in a double-layer bridge structure.

[0006] This application provides a double-layer steel truss bridge structure, which adopts the following technical solution:

[0007] A double-layer steel truss bridge structure includes an upper bridge, a lower bridge, and two support columns erected between the upper bridge and the lower bridge. The lower bridge is erected on a lower crossbeam, the upper bridge is erected on an upper crossbeam, and the two support columns are erected on the lower bridge, with the tops of the two support columns supporting the bottom of the upper bridge.

[0008] A connecting truss is provided between the two supporting columns, and the left and right ends of the connecting truss are respectively connected to the two supporting columns;

[0009] Reinforcing plates are installed on both the left and right sides of the connecting truss. One side of the reinforcing plate is connected to the connecting truss, and the other side of the reinforcing plate is fixedly connected to the support column.

[0010] A covering cavity is formed between the reinforcing plate and the connecting truss, and the covering cavity covers the periphery of the support column.

[0011] By adopting the above technical solution, the two support columns are supported at the bottom of the upper beam, which effectively avoids the upper beam directly acting on the lower beam, and thus effectively avoids the load of the upper beam being concentrated on the lower beam, causing damage to the lower beam.

[0012] Meanwhile, the two supporting columns are connected into a whole by using a connecting truss, which gives the two supporting columns high structural strength and stability, thus effectively ensuring that the two supporting columns provide more stable support to the upper beam and better support effect.

[0013] Adding reinforcing plates to the ends of the connecting trusses allows for welding of the same support column to both the reinforcing plates and the connecting trusses at different locations. This effectively increases the contact area between the support column and the connecting truss, further strengthening the connection and ensuring its stability. When the reinforcing plates and connecting trusses are welded to the support column, the cavity formed between them covers the periphery of the support column, further enhancing the stability of the connection.

[0014] Preferably, the left and right sides of the inner wall of the covering cavity are recessed into grooves in a direction away from the reinforcing plate, and the left and right ends of the reinforcing plate are integrally formed with limiting members. The grooves and the limiting members are both cuboid in shape and are compatible with each other. The limiting members are inserted into the grooves.

[0015] By adopting the above technical solution, specifically when connecting the reinforcing plate and the connecting truss, the limiting members at both ends of the reinforcing plate are inserted into the slots on both sides of the covering cavity. The slots stabilize the limiting members, thereby making the connection between the reinforcing plate and the connecting truss more stable.

[0016] Preferably, both ends of the connecting truss are formed with lubrication cavities, which are located between the two slots on the same side. The lubrication cavities are filled with lubricating oil for lubricating the limiting member and the slot.

[0017] By adopting the above technical solution, these lubricants are used to lubricate the limiting component and the slot, thereby effectively reducing the daily wear between the limiting component and the slot, which in turn helps to improve the service life of the reinforcing plate and the connecting truss.

[0018] Preferably, the lubrication cavity has oil injection holes at both ends, the oil injection holes are connected to the lubrication cavity, and the sidewall of the slot has corresponding overflow holes evenly spaced along the vertical direction.

[0019] By adopting the above technical solution, after the lubricating oil is injected into the lubrication cavity, it flows through the overflow holes to the space between the limiting member and the slot, thereby lubricating the space between them. Since the limiting member extends into the slot, the two are tightly fitted together, and traditional lubrication methods cannot effectively apply lubricating oil between them. In this embodiment, by opening a lubrication cavity within the connecting truss and utilizing the overflow holes on the side wall of the slot, lubricating oil can be effectively applied between the limiting member and the slot, thereby effectively improving the lubrication effect between them.

[0020] Preferably, two guide plates are provided in the lubrication cavity, and the two guide plates are respectively located above the two oil injection holes. The guide plates are used to guide the lubricating oil to overflow from the overflow hole to the spacer and the slot.

[0021] By adopting the above technical solution, the guide plate can guide the lubricating oil while squeezing it, so that it can flow more smoothly from the overflow hole to the spacer and the slot, thereby effectively improving the lubrication effect between the spacer and the slot.

[0022] Preferably, the guide plate is inclined as a whole, with the end closer to the oil injection hole being the high end and the end farther away from the oil injection hole being the low end, and the two guide plates are bent and deformed in a direction away from each other.

[0023] By adopting the above technical solution, the purpose of doing so is that after the lubricating oil falls onto the guide plate, the overall arc of the guide plate bulges outward, thereby better squeezing the lubricating oil from the overflow hole into the space between the limiting component and the slot.

[0024] Preferably, a support plate is integrally connected between the two guide plates in the horizontal direction, and there are multiple support plates, which are evenly distributed in the vertical direction.

[0025] By adopting the above technical solution, the two guide plates are connected as a whole using these support plates, which helps to ensure the stability of the guide plates in the process of guiding lubricating oil.

[0026] Preferably, a reinforcing bar is added to the middle of the connecting truss. The reinforcing bar is fixed to the middle of the connecting truss in a vertical direction. There are multiple reinforcing bars, and the multiple reinforcing bars are evenly distributed at intervals along the width direction of the connecting truss.

[0027] By adopting the above technical solution, the structural strength of the connecting truss itself can be effectively improved by using reinforcing rods, thereby making the supporting effect of the connecting truss and support columns on the upper bridge more stable. Using multiple reinforcing rods can further improve the overall structural strength of the connecting truss.

[0028] In summary, this application includes at least one of the following beneficial technical effects:

[0029] 1. The two support columns are supported at the bottom of the upper beam, which effectively prevents the upper beam from directly acting on the lower beam, and thus effectively prevents the load of the upper beam from being concentrated on the lower beam, causing damage to the lower beam;

[0030] At the same time, the two supporting columns are connected into a whole by using a connecting truss, which gives the two supporting columns high structural strength and stability, thus effectively ensuring that the two supporting columns provide more stable support to the upper beam and better support effect.

[0031] 2. Add a reinforcing plate to the end of the connecting truss so that the same support column can be welded to the reinforcing plate and the connecting truss at different positions. The reinforcing plate can effectively increase the contact surface between the support column and the connecting truss, which will help to further strengthen the connection strength between the support column and the connecting truss and further ensure the stability of the connection between the support column and the connecting truss.

[0032] 3. While guiding the lubricating oil, the guide plate can also squeeze the lubricating oil, allowing it to flow more smoothly from the overflow hole to the spacer and the slot, thereby effectively improving the lubrication effect between the spacer and the slot. Attached Figure Description

[0033] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;

[0034] Figure 2 This is a structural schematic diagram illustrating the positional relationship between the covering cavity, the slot, the limiting member, the lubrication cavity, and the oil injection hole in a specific embodiment of this application;

[0035] Figure 3 This is a structural schematic diagram illustrating the positional relationship between the guide plate and the support plate in an embodiment of this application.

[0036] Reference numerals: 1. Upper bridge; 2. Lower bridge; 3. Support column; 4. Connecting truss; 5. Reinforcing plate; 6. Encasing cavity; 7. Slot; 8. Limiting component; 9. Lubrication cavity; 10. Oil injection hole; 11. Guide plate; 12. Support plate; 13. Reinforcing rod. Detailed Implementation

[0037] The following is in conjunction with the appendix Figure 1 -Appendix Figure 3 This application will be described in further detail below.

[0038] Example:

[0039] This application discloses a double-layer steel truss bridge structure, referring to... Figure 1 and Figure 2 It includes an upper bridge 1, a lower bridge 2, and a support column 3 erected between the upper bridge 1 and the lower bridge 2. The lower bridge 2 is erected on the lower crossbeam, the upper bridge 1 is erected on the upper crossbeam, and the support column 3 is erected on the lower bridge 2. The top of the support column 3 supports the bottom of the upper bridge 1. The support column 3 provides stable support for the upper bridge 1, thereby effectively enhancing the stability of the lower bridge 2 supporting the upper bridge 1.

[0040] Reference Figure 1 and Figure 2 There are two support columns 3, which are distributed at intervals on the left and right ends of the lower beam. The two support columns 3 support the left and right ends of the upper beam respectively, which further ensures the stable support effect of the lower beam on the upper beam.

[0041] By supporting the bottom of the upper beam with two support columns 3, the upper beam is effectively prevented from acting directly on the lower beam, thus effectively preventing the load of the upper beam from being concentrated on the lower beam and causing damage to the lower beam.

[0042] At the same time, refer to Figure 1 and Figure 2 A connecting truss 4 is added horizontally between the two supporting columns 3. The left and right ends of the connecting truss 4 are connected to the two supporting columns 3 respectively. The two supporting columns 3 are connected into a whole by the connecting truss 4, so that the two supporting columns 3 have high structural strength and stability, and thus can effectively ensure that the two supporting columns 3 support the upper beam more stably and with better support effect.

[0043] Specifically, the connecting truss 4 is a square frame structure. During the construction process, after the upper beam, lower beam and two support columns 3 are erected, the left and right ends of the connecting truss 4 are welded to the two support columns 3 respectively. The connecting truss 4 is fixed between the two support columns 3 by welding, which helps to ensure the stability of the connection between the connecting truss 4 and the two support columns 3.

[0044] Furthermore, referring to Figure 1 and Figure 2Reinforcing plates 5 are installed on both the left and right sides of the connecting truss 4. The reinforcing plates 5 are cuboid in shape. Specifically, when welding the connecting truss 4 to the support column 3, the side wall of the connecting truss 4 is welded to one side of the support column 3, and then the side wall of the reinforcing plate 5 is welded to the other side of the corresponding support column 3. By adding reinforcing plates 5 at the ends of the connecting truss 4, the same support column 3 can be welded to the reinforcing plate 5 and the connecting truss 4 at different positions. Thus, the reinforcing plates 5 can effectively increase the contact area between the support column 3 and the connecting truss 4, which is conducive to further strengthening the connection strength between the support column 3 and the connecting truss 4, and further ensuring the stability of the connection between the support column 3 and the connecting truss 4.

[0045] In this embodiment, the two reinforcing plates 5 and the connecting truss 4 form a U-shaped structure. Both ends of the connecting truss 4 have enclosing cavities 6. When the reinforcing plate 5 is connected to the connecting truss 4, the reinforcing plate extends into the enclosing cavity 6. The enclosing cavity 6 effectively increases the contact area between the reinforcing plate 5 and the connecting truss 4, thereby improving the stability of the connection between the reinforcing plate 5, the connecting truss 4, and the support column 3. The ends of the reinforcing plate 5 and the connecting truss 4 are connected by welding, effectively ensuring the connection strength between the reinforcing plate 5 and the connecting truss 4.

[0046] Furthermore, referring to Figure 1 and Figure 2 A reinforcing rod 13 is added to the middle of the connecting truss 4, and the reinforcing rod 13 is fixed vertically to the middle of the connecting truss 4. Multiple reinforcing rods 13 are provided, and they are evenly distributed along the width direction of the connecting truss 4. The use of reinforcing rods 13 effectively improves the structural strength of the connecting truss 4 itself, thereby making the support effect of the connecting truss 4 and the supporting column 3 on the upper bridge 1 more stable. The multiple reinforcing rods 13 further improve the overall structural strength of the connecting truss 4.

[0047] Specifically, refer to Figure 1 and Figure 2 The inner walls of the covering cavity 6 have recessed grooves 7 on both the left and right sides, moving away from the reinforcing plate 5. Both ends of the reinforcing plate 5 have integrally formed limiting components 8. Both the grooves 7 and the limiting components 8 are cuboid in shape and fit together. Specifically, when connecting the reinforcing plate 5 to the connecting truss 4, the limiting components 8 at both ends of the reinforcing plate 5 are inserted into the grooves 7 on both sides of the covering cavity 6. The grooves 7 stably limit the limiting components 8, thereby making the connection between the reinforcing plate 5 and the connecting truss 4 more stable.

[0048] Furthermore, referring to Figure 1 and Figure 2Both ends of the connecting truss 4 are formed with lubrication cavities 9, which are located between two slots 7 on the same side. The lubrication cavities 9 are filled with corresponding lubricating oil, which is used to lubricate the limiting member 8 and the slot 7, thereby effectively reducing the daily wear between the limiting member 8 and the slot 7, and thus helping to improve the service life of the reinforcing plate 5 and the connecting truss 4.

[0049] Specifically, refer to Figure 1 and Figure 2 The lubrication cavity 9 has oil injection holes 10 at both ends, which are connected to the lubrication cavity 9. Lubricating oil is filled into the lubrication cavity 9 through the oil injection holes 10. When lubrication is not required, the oil injection holes 10 are sealed by corresponding cover plates, which can effectively prevent airborne contaminants from entering the lubrication cavity 9. When lubrication is required, the oil injection holes 10 are opened. The side wall of the slot 7 has corresponding overflow holes evenly spaced vertically. After the lubricating oil is injected into the lubrication cavity 9, the lubricating oil flows through these overflow holes to the space between the limiting member 8 and the slot 7, thereby lubricating the space between the limiting member 8 and the slot 7.

[0050] Since the limiting member 8 is inserted into the slot 7 and the two are tightly fitted, the traditional lubrication method cannot effectively apply lubricating oil between the two. In this embodiment, by opening a lubrication cavity 9 in the connecting truss 4 and using the overflow hole on the side wall of the slot 7, lubricating oil can be effectively applied between the limiting member 8 and the slot 7, thereby effectively improving the lubrication effect between the two.

[0051] Furthermore, referring to Figure 2 and Figure 3 Two guide plates 11 are installed inside the lubrication chamber 9, and the two guide plates 11 are respectively located above the two oil injection holes 10. In actual use, lubricating oil falls onto the corresponding guide plates 11 through the oil injection holes 10, and the guide plates 11 guide the lubricating oil to overflow from the overflow holes. While guiding the lubricating oil, the guide plates 11 can also squeeze the lubricating oil, so that it can flow more smoothly from the overflow holes to the space between the limiting member 8 and the slot 7, thereby effectively improving the lubrication effect between the limiting member 8 and the slot 7.

[0052] Specifically, refer to Figure 2 and Figure 3 The guide plate 11 is inclined, with the end closer to the oil injection hole 10 being the high end and the end farther away from the oil injection hole 10 being the low end. The two guide plates 11 are bent and deformed in a direction away from each other. The purpose of this is that after the lubricating oil falls on the guide plate 11, the overall arc of the guide plate 11 bulges outward, which can better squeeze the lubricating oil from the overflow hole into the space between the limiting member 8 and the groove 7.

[0053] Furthermore, referring to Figure 2 and Figure 3 A support plate 12 is integrally connected between the two guide plates 11 in the horizontal direction. Multiple support plates 12 are provided and are evenly distributed in the vertical direction. These support plates connect the two guide plates 11 into a whole, which helps to ensure the stability of the guide plates 11 in guiding lubricating oil.

[0054] The implementation principle of a double-layer steel truss bridge structure in this application embodiment is as follows:

[0055] The lower bridge 2 is erected on the lower crossbeam, the upper bridge 1 is erected on the upper crossbeam, and the support column 3 is erected on the lower bridge 2, with the top of the support column 3 supporting the bottom of the upper bridge 1. The support column 3 provides stable support to the upper bridge 1, thereby effectively enhancing the stability of the lower bridge 2 in supporting the upper bridge 1.

[0056] Two support columns 3 are provided, which are distributed at intervals on the left and right ends of the lower crossbeam. The two support columns 3 support the left and right ends of the upper crossbeam respectively, which further ensures the stable support effect of the lower crossbeam on the upper crossbeam.

[0057] By supporting the bottom of the upper beam with two support columns 3, the upper beam is effectively prevented from acting directly on the lower beam, thus effectively preventing the load of the upper beam from being concentrated on the lower beam and causing damage to the lower beam.

[0058] Meanwhile, a connecting truss 4 is added horizontally between the two support columns 3. The left and right ends of the connecting truss 4 are connected to the two support columns 3 respectively. The two support columns 3 are connected into a whole through the connecting truss 4, so that the two support columns 3 have high structural strength and stability, and thus can effectively ensure that the two support columns 3 support the upper beam more stably and with better support effect.

[0059] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A double-deck steel truss bridge structure, characterized by: It includes an upper bridge (1), a lower bridge (2) and two support columns (3) erected between the upper bridge (1) and the lower bridge (2). The lower bridge (2) is erected on a lower crossbeam, the upper bridge (1) is erected on an upper crossbeam, and the two support columns (3) are erected on the lower bridge (2), with the tops of the two support columns (3) supporting the bottom of the upper bridge (1). A connecting truss (4) is provided between the two supporting columns (3), and the left and right ends of the connecting truss (4) are respectively connected to the two supporting columns (3); The connecting truss (4) is equipped with reinforcing plates (5) on both the left and right sides. One side of the reinforcing plate (5) is connected to the connecting truss (4), and the other side of the reinforcing plate (5) is fixedly connected to the support column (3). A covering cavity (6) is formed between the reinforcing plate (5) and the connecting truss (4), and the covering cavity (6) covers the periphery of the supporting column (3).

2. The double-deck steel truss bridge structure according to claim 1, wherein: The inner walls of the covering cavity (6) are recessed into grooves (7) on both the left and right sides in a direction away from the reinforcing plate (5). The left and right ends of the reinforcing plate (5) are integrally formed with limiting members (8). The grooves (7) and the limiting members (8) are both cuboid in shape and are compatible with each other. The limiting members (8) are inserted into the grooves (7).

3. The double-deck steel truss bridge structure according to claim 2, characterized in that: The connecting truss (4) has lubrication cavities (9) formed at both ends. The lubrication cavities (9) are located between the two slots (7) on the same side. The lubrication cavities (9) are filled with lubricating oil for lubricating the limiting member (8) and the slots (7).

4. The double-deck steel truss bridge structure according to claim 3, wherein: The lubrication cavity (9) has oil injection holes (10) at both ends. The oil injection holes (10) and the lubrication cavity (9) are connected. The side wall of the slot (7) has corresponding overflow holes evenly spaced along the vertical direction.

5. The double-deck steel truss bridge structure according to claim 4, wherein: Two guide plates (11) are provided inside the lubrication cavity (9). The two guide plates (11) are located above the two oil injection holes (10) respectively. The guide plates (11) are used to guide the lubricating oil to overflow from the overflow hole to the spacer (8) and the slot (7).

6. The double-deck steel truss bridge structure according to claim 5, wherein: The guide plate (11) is inclined as a whole, with the end closer to the oil injection hole (10) being the high end and the end farther away from the oil injection hole (10) being the low end, and the two guide plates (11) are bent and deformed in a direction away from each other.

7. The double-deck steel truss bridge structure according to claim 6, wherein: A support plate (12) is integrally connected between the two guide plates (11) in the horizontal direction. There are multiple support plates (12), and the multiple support plates (12) are evenly distributed in the vertical direction.

8. The double-deck steel truss bridge structure according to claim 7, wherein: A reinforcing rod (13) is added to the middle of the connecting truss (4). The reinforcing rod (13) is fixed in the middle of the connecting truss (4) in the vertical direction. There are multiple reinforcing rods (13), and the multiple reinforcing rods (13) are evenly distributed at intervals along the width direction of the connecting truss (4).

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