Hollow pier for railway bridges

Abstract

The utility model provides a hollow pier for railway bridge relates to railway bridge technical field, including pier body, pier body is suitable for supporting bridge, be provided with the cavity in the pier body, the first inspection passageway of extending in height direction is set up in the top of pier body, and the first inspection passageway is suitable for the cavity with outside environment intercommunication, the inside wall of first inspection passageway is set to the ladder, the inspection platform subassembly is set up in the cavity, and the inspection personnel is suitable for detecting the cavity inside wall through the inspection platform subassembly. The utility model discloses a first inspection passageway 11 that is suitable for the cavity with outside environment intercommunication is set up in the top of pier body, can avoid the maintenance personnel aerial work, has reduced the work risk and the psychological burden of maintenance personnel, has facilitated the maintenance work of the progress of pier body, avoids setting up the passageway in the side wall of pier body simultaneously, has improved the structure strength of pier body.

Description

Technical Field

[0001] This utility model relates to the field of railway bridge technology, and more specifically, to hollow bridge piers for railway bridges. Background Technology

[0002] With the development of railway transportation towards high speed and heavy load, the structural forms and performance requirements of railway bridges are constantly increasing. Hollow piers, due to their light weight, large section modulus, and superior bending and torsional resistance, have been widely used in railway bridge engineering. In existing technology, the outer perimeter of hollow piers is equipped with suspended ladders, and the side walls of hollow piers are equipped with passages connecting to the suspended ladders. Maintenance personnel enter the passages via the suspended ladders and then enter the hollow pier for maintenance. However, the suspended ladders are exposed to the elements and are subjected to wind, rain, and sun all year round, resulting in low strength. Maintenance personnel also experience significant psychological burden and high risk when using the suspended ladders. Utility Model Content

[0003] The purpose of this utility model is to provide a hollow bridge pier for railway bridges to improve the aforementioned problems. To achieve this purpose, the technical solution adopted by this utility model is as follows:

[0004] This application provides a hollow bridge pier for railway bridges, comprising: a pier body adapted to support a bridge, the pier body having a cavity, and a first inspection channel extending in the height direction at the top of the pier body, the first inspection channel being adapted to connect the cavity to the external environment; a ladder disposed on the inner wall of the first inspection channel; and an inspection platform assembly disposed within the cavity, the inspection platform assembly being adapted for inspectors to inspect the inner wall of the cavity.

[0005] According to some embodiments of the present invention, the top of the pier body is provided with a second inspection channel extending radially, at least one end of the second inspection channel extends to the side wall of the pier body, and the first inspection channel is provided at the bottom of the second inspection channel.

[0006] According to some embodiments of the present invention, the extension direction of the second inspection channel is parallel to the extension direction of the bridge.

[0007] According to some embodiments of the present invention, the length of the first inspection channel is L1, which satisfies: L1≥0.7m, and the width of the first inspection channel is W1, which satisfies: W1≥0.7m.

[0008] According to some embodiments of the present invention, the width of the second inspection channel is W2, which satisfies: W2≥0.8m.

[0009] According to some embodiments of the present invention, the distance between the bottom of the second inspection channel and the bottom of the bridge is L2, which satisfies: L2≥1.2m.

[0010] According to some embodiments of the present invention, a first arc transition surface is provided between the inner wall of the second inspection channel and the top of the pier body, and a second arc transition surface is provided between the bottom wall of the second inspection channel and the inner wall of the first inspection channel.

[0011] According to some embodiments of the present invention, it further includes a suspended basket and a staircase. The suspended basket is disposed on the outer peripheral wall of the pier body and connected to the bottom wall of the second inspection channel. The bottom of the staircase is connected to the suspended basket, and the top of the staircase extends to the bridge deck.

[0012] According to some embodiments of the present invention, the inspection platform assembly includes multiple inspection platforms and multiple inspection ladders. The multiple inspection platforms are spaced apart along the height direction of the cavity, and adjacent inspection platforms are connected by inspection ladders. The top inspection platform is connected to the ladder.

[0013] According to some embodiments of the present invention, the inspection platform assembly further includes an arc-shaped guardrail and a platform guardrail. The arc-shaped guardrail is connected to the inspection ladder, and a pedestrian passage is defined between the arc-shaped guardrail and the inspection ladder. The platform guardrail is arranged around the outer periphery of the inspection platform.

[0014] The beneficial effects of this utility model are as follows:

[0015] This invention, by opening a first inspection channel at the top of the pier body to connect the cavity with the external environment, avoids maintenance personnel working at heights, reduces the work risks and psychological burden on maintenance personnel, facilitates the maintenance of the pier body, and at the same time avoids opening channels on the side walls of the pier body, thus improving the structural strength of the pier body.

[0016] Other features and advantages of this invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing embodiments of the invention. The objects and other advantages of this invention can be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a cross-sectional view of the hollow bridge pier of this utility model;

[0019] Figure 2 This is a cross-sectional view of the hollow bridge pier of this utility model, perpendicular to the extension direction of the bridge;

[0020] Figure 3 This is a cross-sectional view of the hollow bridge pier of this utility model, parallel to the direction of bridge extension;

[0021] Figure 4 This is a top view of the hollow bridge pier of this utility model.

[0022] Marked in the image:

[0023] 10. Bridge pier body; 11. First inspection passage; 12. Second inspection passage; 20. Ladder; 31. Inspection platform; 32. Inspection ladder; 33. Curved guardrail; 34. Platform guardrail; 40. Suspended basket. Detailed Implementation

[0024] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. The components of the embodiments of this utility model described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely to illustrate selected embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this utility model, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] like Figures 1-4As shown, this embodiment provides a hollow bridge pier for railway bridges, including: a pier body 10, a ladder 20, and an inspection platform assembly. The pier body 10 is adapted to support the bridge. A cavity is provided inside the pier body 10. A first inspection channel 11 extending in the height direction is opened at the top of the pier body 10. The first inspection channel 11 is adapted to connect the cavity with the external environment. The ladder 20 is disposed on the inner wall of the first inspection channel 11. The inspection platform assembly is disposed in the cavity. Inspectors are adapted to inspect the inner wall of the cavity through the inspection platform assembly.

[0027] In some embodiments, the pier body 10 is the main structure supporting the bridge. The pier body 10 has an internal cavity, which can reduce the cost of the pier body 10 while meeting the structural strength requirements. A first inspection channel 11 is opened at the top of the pier body 10 and extends in the vertical direction. The function of the first inspection channel 11 is to connect the internal cavity of the pier body 10 with the external environment, thereby providing maintenance personnel with an entrance to the internal cavity of the pier body 10 from the outside. A ladder 20 is set on the inner wall of the first inspection channel 11. The ladder 20 allows maintenance personnel to move up and down. Specifically, through the ladder 20, maintenance personnel can easily enter or leave the internal cavity of the pier body 10. An inspection platform assembly is set in the internal cavity of the pier body 10. The inspection platform assembly includes multiple inspection platforms 31 and connecting components (such as ladders or steps). The multiple inspection platforms 31 provide space for maintenance personnel to stand and operate, enabling maintenance personnel to perform detailed inspection and maintenance work on the inner wall of the cavity.

[0028] It is understandable that by providing a first inspection channel 11 at the top of the pier body 10 to connect the cavity with the external environment, maintenance personnel can enter the cavity through the first inspection channel 11 to perform maintenance on the pier body 10.

[0029] Compared to the traditional method of installing an aerial ladder outside the pier body 10, this application can avoid maintenance personnel working at heights by setting up the above-mentioned structure, reducing the work risks and psychological burden on maintenance personnel, and facilitating the maintenance work of the pier body 10. At the same time, the aerial ladder is exposed to the external environment and will weaken due to wind and rain all year round. However, this application can avoid the above situation by setting up the ladder 20 inside the first inspection channel 11, which can reduce the wind and rain damage suffered by the ladder 20 and extend the service life of the ladder 20.

[0030] It should be noted that in traditional designs where an aerial ladder is installed outside the pier, a channel communicating with the cavity is opened in the side wall of the pier, which reduces the structural strength of the pier. However, the present application avoids opening a channel in the side wall of the pier body 10 through the above-mentioned design, thereby improving the structural strength of the pier body 10.

[0031] According to the present invention, a hollow bridge pier for railway bridges has a first inspection channel 11 at the top of the pier body 10 that is suitable for connecting the cavity with the external environment. This avoids maintenance personnel from working at heights, reduces the work risks and psychological burden of maintenance personnel, facilitates the maintenance of the pier body 10, and avoids opening channels on the side walls of the pier body 10, thereby improving the structural strength of the pier body 10.

[0032] According to some embodiments of the present invention, a second inspection channel 12 extending radially is provided on the top of the pier body 10, at least one end of the second inspection channel 12 extends to the side wall of the pier body 10, and a first inspection channel 11 is provided at the bottom of the second inspection channel 12.

[0033] In some embodiments, a second inspection channel 12 extending radially is provided on the top of the pier body 10. The second inspection channel 12 provides maintenance personnel with a space for lateral movement, facilitating maintenance personnel to prepare for or move on the top of the pier body 10 before maintenance.

[0034] At least one end of the second inspection channel 12 extends to the side wall of the pier body 10, thereby allowing maintenance personnel to enter the second inspection channel 12 from the top side of the pier body 10. The first inspection channel 11 is located at the bottom of the second inspection channel 12, thereby allowing maintenance personnel to first move laterally at the top of the pier body 10 through the second inspection channel 12, and then directly enter the cavity inside the pier body 10 through the first inspection channel 11 located at its bottom, without the need for additional climbing or transfer.

[0035] Thus, the second inspection channel 12 provides space for lateral movement, while the first inspection channel 11 provides a longitudinal way to enter the interior of the pier body 10. In other words, the above arrangement allows maintenance personnel to move flexibly on the top of the pier body 10 and quickly enter the area that needs to be inspected.

[0036] It should be noted that since the first inspection channel 11 is located directly at the bottom of the second inspection channel 12, maintenance personnel do not need to climb from the side of the pier body 10 to the top and then enter the interior, thus reducing the risks during the climbing process.

[0037] According to some embodiments of the present invention, the extension direction of the second inspection channel 12 is parallel to the extension direction of the bridge.

[0038] In some embodiments, the second inspection channel 12 is designed parallel to the bridge's extension direction, which can reduce interference with the lateral force on the top of the pier body 10 and avoid stress concentration or structural weakening of the pier body 10 due to the setting of the second inspection channel. That is, the second inspection channel 12 is parallel to the bridge's extension direction, so that the second inspection channel and the main structure of the pier body 10 form a cooperative force-bearing system, which conforms to the design principle of "longitudinal bearing and lateral stability" of the bridge. In other words, through the above-mentioned setting, the force on the second inspection channel is consistent with the main structure of the pier body 10, which conforms to the principle of "minimal interference" and ensures the overall stability of the bridge.

[0039] According to some embodiments of the present invention, the length of the first inspection channel 11 is L1, which satisfies: L1≥0.7m, and the width of the first inspection channel 11 is W1, which satisfies: W1≥0.7m.

[0040] It is understandable that maintenance personnel need to carry tools and testing equipment (such as crack width gauges and concrete rebound hammers) into the passage. The 0.7m wide first inspection passage 11 can accommodate one person to pass through and operate the equipment, avoiding the risk of collision or fall due to the narrow space of the first inspection passage 11. Moreover, the length L1 of the first inspection passage 11 is ≥0.7m, which can ensure that maintenance personnel can maintain their balance when adjusting their posture or stopping briefly in the first inspection passage 11.

[0041] According to some embodiments of the present invention, the width of the second inspection channel 12 is W2, which satisfies: W2≥0.8m.

[0042] Understandably, the second inspection passage 12, as a lateral movement space, needs to accommodate at least two maintenance personnel working in parallel or one person operating the equipment while another assists. Therefore, this application satisfies these requirements by ensuring the width W2 of the second inspection passage 12 is ≥ 0.8m. Of course, a width W2 ≥ 0.8m ensures that over 95% of maintenance personnel of similar build can work safely in parallel, avoiding operational errors caused by the limited space in the second inspection passage 12.

[0043] According to some embodiments of the present invention, the distance between the bottom of the second inspection channel 12 and the bottom of the bridge is L2, which satisfies: L2≥1.2m.

[0044] Understandably, by ensuring that the distance L2 between the bottom of the second inspection channel 12 and the bottom of the bridge is ≥ 1.2m, maintenance personnel can pass smoothly through the second inspection channel 12, while also facilitating the smooth entry of long tools such as poles into the first inspection channel 11. Specifically, when transporting long tools (such as a 2m long testing pole), they need to be tilted through the channel. A clearance of 1.2m or more ensures that the long tools pass through at a 30° angle (2m × sin30° = 1m), preventing them from getting stuck and thus ensuring the smooth progress of the inspection work.

[0045] In some embodiments, a pad stone is provided on the top of the pier body 10, the pad stone being located on both sides in the width direction of the second inspection channel 12, and the top of the pad stone being adapted to cooperate with the support of the bridge.

[0046] According to some embodiments of the present invention, a first arc transition surface is provided between the inner wall of the second inspection channel 12 and the top of the pier body 10, and a second arc transition surface is provided between the bottom wall of the second inspection channel 12 and the inner wall of the first inspection channel 11.

[0047] In some embodiments, the first and second circular arc transition surfaces uniformly distribute stress through a smooth radius of curvature, reducing the local stress peak of the pier body 10, thereby preventing the generation and propagation of microcracks in the pier body 10.

[0048] Of course, the first and second arc transition surfaces eliminate right angles and sharp corners, preventing maintenance personnel or equipment from being scratched or damaged by collisions during movement. Moreover, the first and second arc transition surfaces can be combined with anti-slip coatings to reduce the risk of falls caused by maintenance personnel stepping into gaps or slipping.

[0049] According to some embodiments of the present invention, the hollow bridge pier also includes a suspended basket 40 and a staircase. The suspended basket 40 is disposed on the outer peripheral wall of the pier body 10 and connected to the bottom wall of the second inspection channel 12. The bottom of the staircase is connected to the suspended basket 40, and the top of the staircase extends to the bridge deck.

[0050] In some embodiments, the top of the staircase is connected to the bridge deck, and the bottom of the staircase is connected to the suspended basket 40, forming a passage from the bridge deck to the suspended basket 40. The suspended basket 40 is fixed to the outer peripheral wall of the pier body 10, and the bottom of the suspended basket 40 is flush with or directly connected to the bottom wall of the second inspection channel 12 to form a transition platform for entering the second inspection channel 12 from the outside of the pier body 10.

[0051] Thus, the above setup can form a path of "bridge deck → staircase → suspended basket 40 → second inspection channel 12 → first inspection channel 11", providing maintenance personnel with a safe and efficient maintenance route to enter the interior of the bridge pier body 10 from the outside.

[0052] It should be noted that the suspended platform 40 is a temporary platform for high-altitude operations. The suspended platform 40 is equipped with guardrails (height ≥ 1.2m) around its perimeter to prevent maintenance personnel from falling. The bottom of the suspended platform 40 is made of anti-slip steel plate (friction coefficient ≥ 0.5) to prevent tools or maintenance personnel from slipping.

[0053] According to some embodiments of the present invention, the inspection platform assembly includes multiple inspection platforms 31 and multiple inspection ladders 32. The multiple inspection platforms 31 are spaced apart along the height direction of the cavity. Adjacent inspection platforms 31 are connected by inspection ladders 32, and the top inspection platform 31 is connected to the climbing ladder 20.

[0054] In some embodiments, multiple inspection platforms 31 are spaced apart along the height direction of the pier body 10 to cover maintenance needs at different heights. Adjacent inspection platforms 31 are connected by inspection ladders 32 to form a continuous maintenance path, thereby facilitating maintenance personnel to move from one inspection platform 31 to another adjacent inspection platform 31. The ladders 20 of the top inspection platforms 31 are directly connected to achieve a seamless transition from the first inspection channel 11 to the internal maintenance system.

[0055] According to some embodiments of the present invention, the inspection platform component further includes an arc-shaped guardrail 33 and a platform guardrail 34. The arc-shaped guardrail 33 is connected to the inspection ladder 32, and a pedestrian passage is defined between the arc-shaped guardrail 33 and the inspection ladder 32. The platform guardrail 34 is arranged around the outer periphery of the inspection platform 31.

[0056] In some embodiments, curved guardrails 33 are connected to both sides of the inspection ladder 32. The curved guardrails 33 form a protective structure that matches the curvature of the ladder section. Together with the inspection ladder 32, the curved guardrails 33 define the passageway for pedestrians, ensuring that maintenance personnel are within the protected area when climbing. Since maintenance personnel are prone to tipping over due to a shift in their center of gravity while climbing, the curved guardrails 33, with their curved surface structure matching the curvature of the ladder section, confine the personnel's bodies within a safe area. Even in the event of imbalance, the curved surface of the curved guardrails 33 provides cushioning, reducing the risk of fall. Platform guardrails 34 are arranged around the outer perimeter of the inspection platform 31, forming a closed protection to prevent maintenance personnel or tools from falling.

[0057] In some embodiments, the arc radius R of the curved guardrail 33 is between 0.3m and 0.8m, the height H of the platform guardrail 34 is ≥1.2m, and the horizontal bar spacing L3 of the platform guardrail 34 is ≤0.5m. The platform guardrail 34 is also provided with a toe board, the height of which is h ≥0.18m.

[0058] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

[0059] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope of the claims.

Claims

1. A hollow bridge pier for railway bridges, characterized in that, include: The pier body (10) is adapted to support the bridge. The pier body (10) has a cavity inside. The top of the pier body (10) has a first inspection channel (11) extending in the height direction. The first inspection channel (11) is adapted to connect the cavity with the external environment. A ladder (20) is provided on the inner wall of the first inspection channel (11); An inspection platform assembly is disposed within the cavity, and an inspector is adapted to inspect the inner wall of the cavity through the inspection platform assembly.

2. The hollow bridge pier for railway bridges according to claim 1, characterized in that, The top of the pier body (10) is provided with a second inspection channel (12) extending radially, at least one end of the second inspection channel (12) extending to the side wall of the pier body (10), and the first inspection channel (11) is provided at the bottom of the second inspection channel (12).

3. The hollow bridge pier for railway bridges according to claim 2, characterized in that, The extension direction of the second inspection channel (12) is parallel to the extension direction of the bridge.

4. The hollow bridge pier for railway bridges according to claim 3, characterized in that, The length of the first inspection channel (11) is L1, which satisfies: L1≥0.7m, and the width of the first inspection channel (11) is W1, which satisfies: W1≥0.7m.

5. The hollow bridge pier for railway bridges according to claim 4, characterized in that, The width of the second inspection channel (12) is W2, which satisfies: W2≥0.8m.

6. The hollow bridge pier for railway bridges according to claim 2, characterized in that, The distance between the bottom of the second inspection channel (12) and the bottom of the bridge is L2, which satisfies: L2≥1.2m.

7. The hollow bridge pier for railway bridges according to claim 6, characterized in that, A first arc transition surface is provided between the inner wall of the second inspection channel (12) and the top of the pier body (10), and a second arc transition surface is provided between the bottom wall of the second inspection channel (12) and the inner wall of the first inspection channel (11).

8. The hollow bridge pier for railway bridges according to claim 2, characterized in that, It also includes a suspended platform (40) and a staircase. The suspended platform (40) is disposed on the outer peripheral wall of the pier body (10) and connected to the bottom wall of the second inspection channel (12). The bottom of the staircase is connected to the suspended platform (40), and the top of the staircase extends to the bridge deck.

9. The hollow bridge pier for railway bridges according to claim 1, characterized in that, The inspection platform assembly includes multiple inspection platforms (31) and multiple inspection ladders (32). The multiple inspection platforms (31) are spaced apart along the height direction of the cavity. Two adjacent inspection platforms (31) are connected by inspection ladders (32). The top inspection platform (31) is connected to the ladder (20).

10. The hollow bridge pier for railway bridges according to claim 9, characterized in that, The inspection platform component also includes an arc-shaped guardrail (33) and a platform guardrail (34). The arc-shaped guardrail (33) is connected to the inspection ladder (32), and a pedestrian passage is defined between the arc-shaped guardrail (33) and the inspection ladder (32). The platform guardrail (34) is arranged around the outer periphery of the inspection platform (31).

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