Full-coverage maintenance system of basket type steel structure arch bridge with large span and wide bridge floor

Abstract

The invention belongs to the field of bridge maintenance equipment, and particularly relates to a full-coverage maintenance system of a basket type steel structure arch bridge with a large span and a wide bridge floor. A first maintenance car is mounted at the beam bottom, and a second maintenance car is mounted on the arch rib; a first manhole and a first ladder stand are arranged at the top of the main beam for personnel maintenance; and a second manhole is formed in the combined section of the main beam and the arch rib, a second crawling ladder is installed in the combined section, and the second manhole is used for achieving communication of overhaul channels in the arch rib and the main beam. The first maintenance car is of a truss structure, is installed along the bottom of the main beam in a surrounding mode and can move in the longitudinal bridge direction along the bottom of the main beam to achieve maintenance. The second maintenance car can climb and move along the longitudinal bridge direction of the top surface of the arch rib, and part of the structure has rotating and telescopic functions, so that maintenance of the arch rib is realized. The arch rib diaphragm plate is provided with a third manhole and a third ladder stand; fourth manholes are formed in the joints of the arch ribs and the wind braces; and the third manhole and the fourth manhole are used for communicating an arch rib with a maintenance channel in the wind brace. Full-coverage maintenance of the basket type steel structure arch bridge with the large span and the wide bridge floor can be achieved.

Description

Technical Field

[0001] The invention belongs to the field of bridge maintenance equipment, in particular to a full-coverage maintenance system for a basket-lift type steel structure arch bridge with a large span and wide bridge deck. Background Art

[0002] Steel arch bridges require frequent maintenance during their long service life. Traditional arch bridge maintenance usually uses equipment such as bridge deck climbing vehicles and maintenance baskets. The bridge deck climbing vehicle can lift maintenance personnel to a certain height, making it convenient to inspect and maintain the bridge structure close to the bridge deck; the maintenance basket can be suspended on the bridge deck, allowing maintenance personnel to approach the arch ribs and other parts for operation.

[0003] However, for a large-span, wide-deck basket-type steel arch bridge, its structural characteristics are very different from those of a conventional arch bridge. This type of arch bridge has the characteristics of a wide deck, a large span, a high arch rib height, and an inclined arch rib surface. First, due to its wide deck and large span, traditional maintenance equipment has limitations in coverage, and it is difficult to achieve full coverage maintenance of the main beam, arch rib, and arch rib wind brace. For example, the operating range of the bridge deck aerial platform is limited, and it is difficult to reach the higher position and inclined surface of the arch rib; the maintenance basket may not be able to be stably suspended and moved in the case of a large span and wide bridge deck, and it is impossible to fully inspect the arch rib and wind brace. Secondly, the use of traditional maintenance equipment will increase the safety risks of maintenance personnel. Under the complex structure of a large-span, wide-deck basket-type steel arch bridge, maintenance personnel may face an unstable working environment when using traditional equipment, such as the shaking of the aerial platform when the height and span are large, and the imbalance of the basket when operating on the inclined arch rib surface, which poses a potential threat to the life safety of maintenance personnel. In addition, the maintenance volume of this type of arch bridge is also large, and the efficiency and effect of traditional equipment cannot meet its maintenance needs, which may not only lead to incomplete and untimely maintenance, but also increase the maintenance cost and operation risk of the bridge. Therefore, a full-coverage maintenance system suitable for large-span and wide-deck arch bridges is urgently needed. Summary of the invention

[0004] In order to solve the above technical problems, the present invention proposes a full-coverage maintenance system for a large-span wide-deck basket-type steel structure arch bridge, which includes a fully enclosed truss structure maintenance vehicle at the bottom of the beam, a walking, telescopic and rotating truss maintenance vehicle on the arch, an access channel to the main beam top plate, a maintenance through channel between the main beam and the arch rib, and an internal channel of the arch rib wind brace. The above structural settings can achieve full-coverage maintenance and reduce the safety risks of maintenance personnel.

[0005] In order to achieve the above objectives, the present invention specifically adopts the following technical means:

[0006] A full-coverage maintenance system for a large-span, wide-deck basket-type steel structure arch bridge, the steel structure arch bridge comprises a main beam, arch ribs, and wind braces, wherein the wind braces are located between the arch ribs, a first maintenance vehicle is installed at the bottom of the beam, and a second maintenance vehicle is installed on the arch ribs; a first manhole and a first ladder are opened at the top of the main beam for personnel maintenance; a second manhole is opened at the junction of the main beam and the arch rib, and a second ladder is installed inside, the second manhole is used to realize the through-going of the maintenance passage inside the arch rib and the main beam.

[0007] Furthermore, the first maintenance vehicle is a truss structure, which is installed in an enclosing manner along the bottom of the main beam. The first maintenance vehicle can move along the longitudinal bridge to the bottom of the main beam to achieve maintenance of the outer surface of the main beam.

[0008] Furthermore, the second maintenance vehicle can climb the slope along the longitudinal direction of the arch rib, and some of its trusses can be extended and rotated vertically and horizontally through mechanical devices. The second maintenance vehicle can realize the maintenance of the arch rib and the outer surface of the wind brace.

[0009] Furthermore, the interior of the main beam is a hollow structure, which meets the needs of traffic.

[0010] Furthermore, the arch ribs and wind braces are box-type structures, and the inner cavity thereof can be used for passage.

[0011] Furthermore, the arch rib partition has a third manhole and a third ladder; a fourth manhole is opened at the junction of the arch rib and the wind brace, which is used for the internal maintenance channel of the arch rib and the wind brace to pass through.

[0012] The present invention has the following beneficial technical effects:

[0013] The maintenance vehicle with truss structure is installed in the surrounding installation at the bottom of the main beam. The above-mentioned surrounding installation enables the maintenance vehicle to cover the outer surface of the main beam in all directions. And it can move along the longitudinal bridge to the bottom of the main beam, realizing comprehensive and flexible maintenance of the bottom of the main beam.

[0014] The arch is equipped with a maintenance gantry, which can climb the slope in the longitudinal direction, and can be extended and rotated in the transverse and vertical directions, so that it can cover the entire outer surface of the arch ribs and wind braces, thereby realizing the maintenance of the outer surface of the arch ribs and wind braces.

[0015] A manhole and ladder are opened at the top of the main beam to facilitate personnel to enter the main beam through the manhole and reach different maintenance positions with the help of the ladder, thus realizing the maintenance of the main beam. A manhole is opened at the junction of the main beam and the arch rib, and a ladder is installed inside. This design realizes the connection of the arch rib and the maintenance passage inside the main beam. Personnel can move conveniently between the arch rib and the main beam through the manhole and ladder to inspect the junction and the interior of the two.

[0016] A manhole and a ladder are set up on the arch rib diaphragm, and a manhole is set up at the junction of the arch rib and the wind brace. The setting of these manholes and ladders allows the internal inspection passages of the arch rib and the wind brace to be connected. Personnel can reach various positions of the arch rib and the wind brace through the cavity inside the arch rib and use the ladder and manhole to carry out inspection, thus achieving full coverage of the arch rib and the wind brace. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural diagram of a basket-type steel arch bridge with a large span and wide deck;

[0018] Figure 2 This is the structural side view of a basket-type steel arch bridge with a large span and wide deck;

[0019] Figure 3 A schematic diagram of a main beam bottom truss maintenance vehicle in a certain embodiment;

[0020] Figure 4 This is an intention of inspecting the track at the bottom of the main beam in a certain embodiment;

[0021] Figure 5 It is the intention of the arch overhaul track in a certain embodiment;

[0022] Figure 6 It is a schematic diagram of the structure of an arch maintenance vehicle in a certain embodiment;

[0023] Figure 7 It is a schematic diagram of a maintenance vehicle on an arch in a moving state in a certain embodiment;

[0024] Figure 8 A schematic diagram of a maintenance vehicle on an arch in a moving state from another perspective in a certain embodiment;

[0025] Fig. 9 It is a schematic diagram of an arch-mounted maintenance vehicle in a maintenance state in a certain embodiment;

[0026] Fig.10 It is a schematic diagram of another maintenance state of the arch maintenance vehicle in a certain embodiment;

[0027] Fig.11 A schematic diagram of a manhole formed on the top plate of a main beam in a certain embodiment;

[0028] Fig.12 This is a schematic diagram of a main beam manhole and ladder in a certain embodiment;

[0029] Fig.13 A schematic diagram of a manhole and ladder at the junction of the main beam and the arch rib in a certain embodiment;

[0030] Fig.14 A schematic diagram of a manhole and a ladder at the junction of a main beam and an arch rib from another perspective in a certain embodiment;

[0031] Fig.15 A schematic diagram of an arch rib manhole and a ladder in a certain embodiment;

[0032] Fig.16 A schematic diagram of a manhole at the junction of an arch rib and a wind brace in a certain embodiment;

[0033] Fig.17 A schematic diagram of a manhole at the junction of an arch rib and a wind brace from another perspective in a certain embodiment;

[0034] Numbers in the figure:

[0035] 1. Main beam; 100. First maintenance vehicle;

[0036] 1001. Track maintenance seat; 1002. Maintenance vehicle track;

[0037] 101, first manhole; 102, first ladder; 103, second manhole; 104, second ladder; 2, arch rib; 200, second maintenance vehicle;

[0038] 2001. Arch rail maintenance seat; 2002. Arch maintenance vehicle rail; 2003. Arch maintenance vehicle main truss; 2004. Vertical telescopic truss; 2005. Telescopic rotating device; 2006. Horizontal telescopic truss; 2007. Liftable hanging basket;

[0039] 201. Third manhole; 202. Third ladder; 203. Fourth manhole; 3. Wind brace. DETAILED DESCRIPTION

[0040] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the illustrations provided in the following embodiments only illustrate the basic concept of the present invention in a schematic manner, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0041] Among them, the drawings are only used for illustrative explanations, and they only represent schematic diagrams rather than actual pictures, and should not be understood as limitations on the present invention. In order to better illustrate the embodiments of the present invention, some parts of the drawings may be omitted, enlarged or reduced, and do not represent the size of actual products. For those skilled in the art, the omission of certain well-known structures and their descriptions in the drawings is understandable.

[0042] See also Figure 1 and 2, which is a structural schematic diagram of a large-span, wide-deck basket-type steel structure arch bridge, including a main beam 1, an arch rib 2, and a wind brace 3, wherein the wind brace 3 is located between the arch ribs 2.

[0043] See also Figure 3 and 4 The first maintenance vehicle 100 is installed at the bottom of the beam. The first maintenance vehicle 100 is a truss structure and is installed along the bottom of the main beam 1 in a surrounding manner. It can move along the longitudinal bridge to the bottom of the main beam 1, so as to realize the maintenance of the bottom of the main beam 1. The maintenance vehicle track 1002 is set along the longitudinal bridge of the bottom of the beam to ensure the normal operation of the first maintenance vehicle 100. The maintenance vehicle track 1002 is connected to the main beam 1 through the track connecting seat 1001.

[0044] See also Figures 5 to 10 A second maintenance vehicle 200 is installed on the arch rib, comprising a main truss 2003, a vertical telescopic truss 2004, a horizontal extension and rotation truss 2006 and a truss-type hanging basket 2007. The upper surface of the arch rib top plate is provided with an arch maintenance vehicle track 2002 to ensure the operation of the second maintenance vehicle 200. The outer surface of the arch rib 2 can be inspected by the vertical telescopic truss 2004, the bottom surface of the arch rib 2 and the side and bottom surfaces of the wind brace 3 can be inspected by the horizontal telescopic truss 2006, and the inner surface of the arch rib 2 and the top surface of the wind brace 3 can be inspected by the movable truss hanging basket 2007. The horizontal telescopic truss 2006 can be rotated to a vertical state during the walking process to avoid the mesh hanging rod, so that the entire outer surface of the arch rib 2 and the wind brace 3 can be reached and covered.

[0045] The arch maintenance vehicle has different working conditions, such as Figure 8 In the walking state, the vertical telescopic truss 2004 is in the retracted state, and the transverse telescopic truss 2006 rotates to the vertical state. At this time, the horizontal truss above the arch rib becomes the main truss, the telescopic rotating device 2005 has the telescopic rotating function, and the hanging basket 2007 is in the retracted state, which is convenient for the maintenance vehicle to move; in the maintenance state 1, the vertical telescopic truss 2004 is put down, and the transverse telescopic truss 2006 rotates to the horizontal direction and extends, providing preliminary support and operation space for maintenance operations; in the maintenance state 2, the vertical telescopic truss 2004 is also in the put down state, and the transverse telescopic truss 2006 keeps rotating to the horizontal and extended state, and the hanging basket 2007 is put down, so that the maintenance personnel can enter the hanging basket, and with the cooperation of the transverse telescopic truss 2006 structure, the arch rib and other facilities can be comprehensively and carefully maintained. It should be noted that the above-mentioned telescopic truss and telescopic rotating device are conventional mechanical devices in construction equipment.

[0046] See also Fig.11 and 12The first manhole 101 and the first ladder 102 are opened at the reasonable stress position of the top plate of the main beam end for personnel maintenance. The interior of the main beam 1 is a hollow structure to meet the traffic requirements. The walking requirements of personnel or equipment are realized through the cavity of the beam body. When encountering a closed partition, a manhole and a ladder are set to meet the traffic requirements, so that the internal surface of the main beam can be reached and covered.

[0047] See also Fig.13 and Fig.14 A second manhole 103 is opened at the junction of the main beam 1 and the arch rib 2, and a second ladder 104 is installed inside. The second manhole 103 is used to realize the through-going of the arch rib and the internal maintenance passage of the main beam. The inside of the arch rib and the main beam are connected by setting a manhole and a ladder on the main beam top plate at the arch-beam junction section to achieve the goal of fully connecting the arch rib and the main beam maintenance passage.

[0048] See also Figures 15 to 17 The arch rib 2 and the wind brace 3 are box-shaped structures, and the inner cavity can be used for passage. The third manhole 201 and the third ladder 202 are provided on the cross partition of the arch rib 2; the fourth manhole 203 is provided at the junction of the arch rib 2 and the wind brace 3, which is used for the full access of the upper maintenance passage. The box-shaped cavity provides walking space, and when necessary, a manhole and a ladder structure are set to ensure that the inner surface of the arch rib and the wind brace can be reached.

Claims

1. A full coverage inspection and maintenance system for a large-span, wide-deck basket-type steel structure arch bridge, the steel structure arch bridge comprising a main beam (1), an arch rib (2), and a wind brace (3), wherein the wind brace (3) is located between the arch ribs (2), and is characterized in that: A first maintenance vehicle (100) is installed at the bottom of the beam for maintenance of the outer surface of the main beam, and a second maintenance vehicle (200) is installed on the arch rib for maintenance of the outer surface of the arch rib and the wind brace; a first manhole (101) and a first ladder (102) are provided at the top of the main beam for maintenance personnel and equipment to enter and exit the main beam for maintenance inside the main beam; a second manhole (103) is provided at the junction of the main beam (1) and the arch rib (2), and a second ladder (104) is installed inside, and the second manhole (103) is used to realize the through-connection of the arch rib and the internal maintenance channel of the main beam.

2. The full coverage maintenance system for a large-span, wide-deck basket-type steel structure arch bridge according to claim 1 is characterized in that: The first maintenance vehicle (100) is a truss structure, which is installed in an enclosing manner along the bottom of the main beam (1). The first maintenance vehicle (100) can move along the longitudinal bridge to the bottom of the main beam (1) to achieve maintenance.

3. The full coverage maintenance system for a large-span, wide-deck basket-type steel structure arch bridge according to claim 1 is characterized in that: The second maintenance vehicle (200) can move along the arch rib longitudinal bridge to climb the slope, and the second maintenance vehicle (200) is a rotating and telescopic truss-type maintenance truss vehicle.

4. The full coverage maintenance system for a large-span, wide-deck basket-type steel structure arch bridge according to claim 1 is characterized in that: The interior of the main beam (1) is a hollow structure, which meets the requirements for passage.

5. According to the full coverage maintenance system of the large-span, wide-deck basket-type steel structure arch bridge described in claim 1, the arch rib (2) and the wind brace (3) are box-type structures, and the inner cavity thereof can be used for traffic.

6. The full coverage maintenance system for a large span and wide deck basket-type steel structure arch bridge according to claim 1 is characterized in that: The cross partition of the arch rib (2) is provided with a third manhole (201) and a third ladder (202); the junction of the arch rib (2) and the wind brace (3) is provided with a fourth manhole (203) for connecting the internal maintenance passage of the arch rib and the wind brace.

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