Rail type UHPC bridge deck integrated construction system and construction process thereof

Abstract

The application discloses a track type UHPC bridge deck integrated construction system, which comprises a paver, a mixer set, a working walking mechanism, the paver comprises a first rack, a first walking mechanism, a chute, a leveling mechanism and a vibrating mechanism, the first walking mechanism is arranged on the two sides of the first rack, the chute is surrounded by a front material baffle, left and right side plates and a rear material baffle, the leveling mechanism comprises a leveling plate, a leveling vibration motor, a leveling plate adjusting oil cylinder and a leveling plate transmission beam, the vibrating mechanism is used for vibrating and compacting concrete in the chute, the mixer set is rigidly connected with the paver through a synchronous connecting rod, and the mixer set comprises a second walking mechanism, a second rack and a UHPC wet material mixing system which is installed on the second rack, and the working walking mechanism comprises a walking conversion device, a hydraulic control system, a rail grabber and a walking oil cylinder. The application integrates material mixing, material distribution, paving and leveling, improves construction efficiency and reduces construction cost. The application further discloses a construction process of the system.

Description

Technical Field

[0001] This invention belongs to the field of building engineering technology, specifically relating to a track-type UHPC bridge deck integrated construction system and its construction process. Background Technology

[0002] Ultra-high performance concrete (UHPC) possesses superior mechanical properties, durability, toughness, wear resistance, blast resistance, and impact resistance. As a bridge deck paving material, UHPC can significantly improve the overall stiffness of the bridge deck, especially for steel bridges, greatly reducing the likelihood of fatigue failure in orthotropic bridge decks under long-term heavy loads. Currently, this material is being used more and more widely in orthotropic bridge deck paving.

[0003] Currently, in the construction of UHPC bridge deck paving, concrete is generally pumped onto the pouring surface using concrete pump trucks, and then manually smoothed and leveled after pouring. This method is inefficient, labor-intensive, and produces poor results. In recent years, with continuous technological advancements, mechanized construction has emerged to replace manual labor. Equipment such as concrete placing booms, leveling machines, and mulching machines are used to complete the paving of ultra-high performance concrete. However, the numerous pieces of equipment and complex procedures involved pose certain risks to the stability of on-site construction quality, making the construction complex and inconvenient, while also increasing equipment and labor costs. Summary of the Invention

[0004] To address the problems existing in the prior art, this invention provides a highly automated, integrated, and effective track-mounted UHPC bridge deck integrated construction system and its construction process.

[0005] This invention provides a track-mounted UHPC bridge deck integrated construction system, including a track-mounted UHPC bridge deck paver, a mixing unit, and a working walking mechanism;

[0006] The track-mounted UHPC bridge deck paver includes a first frame, a first traveling mechanism, a material trough, a leveling mechanism, and a vibrating mechanism. The first frame includes a crossbeam and longitudinal beams fixedly installed at both ends of the crossbeam. The first traveling mechanism is located on both sides of the first frame and includes a traveling beam, traveling wheels, a traveling drive motor, and rails. The rails are laid parallel to the bridge deck. The traveling beam is fixed to the first frame. The traveling wheels and the traveling drive motor are installed on the traveling beam, and the traveling drive motor drives the traveling wheels, which travel on the rails. The material trough is a through-slot arranged along the width of the bridge deck and open at the top and bottom. It is formed by a front baffle plate, left and right side plates, and a rear baffle plate. The front baffle plate and left and right side plates are fixedly connected to the first frame. The bottom of the front baffle plate and left and right side plates is close to the bridge deck reinforcement. The rear baffle plate... The two ends of the plate are respectively attached to the left and right side plates and slide vertically with them; the leveling mechanism includes a leveling plate, a leveling vibration motor, a leveling plate adjusting cylinder, and a leveling plate transmission beam. The leveling plate is located at the bottom rear side of the rear baffle and is connected to the rear baffle as a whole. The bottom surface of the leveling plate is flush with the bottom surface of the rear baffle. The leveling vibration motor is mounted on the leveling plate. One end of the leveling plate adjusting cylinder is connected to the leveling plate, and the other end is connected to the first frame. It is used to adjust the distance between the leveling plate and the bridge surface. The upper part of the leveling plate has a vertical opening. The lower part of the leveling plate transmission beam is movably placed in the opening. The upper part of the leveling plate transmission beam is fixedly connected to the crossbeam. The crossbeam drives the leveling plate and the rear baffle to move back and forth through the leveling plate transmission beam. The vibration mechanism is set in the material trough and is used to vibrate the concrete stored in the material trough.

[0007] The mixing unit is located in front of the track-mounted UHPC bridge deck paver and is rigidly connected to the track-mounted UHPC bridge deck paver through a synchronous connecting rod. It includes a second traveling mechanism, a second frame connected to the second traveling mechanism, and a UHPC wet material mixing system installed on the second frame. The second traveling mechanism includes a traveling beam and traveling wheels installed on the traveling beam. The traveling wheels cooperate with the track. The UHPC wet material mixing system includes a mixer, a raw material feeding mechanism, an automatic metering and water adding device, and a mixer self-control speed regulation device. The raw material feeding mechanism is used to hoist the raw materials into the mixer. The automatic metering and water adding device is used to add water to the mixer in a quantitative manner at appropriate times. The mixer self-control speed regulation device is used to control and adjust the speed of the mixing motor according to a preset program for different process periods. The mixer is used to mix UHPC wet material and transport it to the material trough through a chute.

[0008] The working walking mechanism includes a walking conversion device, a hydraulic control system, and four sets of rail grippers and walking cylinders. The walking conversion device is used to switch between the power-off braking function of the walking wheels and the power-off idling function of the walking drive motor. The four sets of rail grippers and walking cylinders are respectively installed on the left and right sides in front of the second walking mechanism and on the left and right sides behind the first walking mechanism. The rail grippers cooperate with the track, and the walking cylinders are connected to the rail grippers and the walking beam. The hydraulic control system is used to control the rail grippers and walking cylinders located in front of the second walking mechanism and the rail grippers and walking cylinders located behind the first walking mechanism to alternately move, so as to drive the entire integrated construction system to move forward or backward in coordination.

[0009] Furthermore, the lower part of the rear baffle is provided with a plow-shaped shovel that extends forward at an angle.

[0010] Furthermore, the two end faces of the rear baffle are provided with grooves, and elastic sealing strips are embedded in the grooves, so that the rear baffle is in close contact with the left and right side walls through the elastic sealing strips.

[0011] Furthermore, the vibration mechanism includes a vibration beam, a vibration motor, and a vibration beam swing adjustment cylinder. The vibration beam is elastically connected to a mounting plate located at the opening above the material trough, and the vibration beam extends into the material trough. The vibration motor is fixed on the vibration beam. One end of the vibration beam swing adjustment cylinder is hinged to the mounting plate, and the other end is hinged to the vibration beam.

[0012] Furthermore, it also includes a longitudinal bridge coating mechanism, which includes a coating mounting bracket connected to the frame and a coating roller disposed on the coating mounting bracket.

[0013] Furthermore, the mixer is a flat-mouth vertical high-speed mixer, and the mixer is connected to the second frame via a quick-release device.

[0014] Furthermore, both the track-mounted UHPC bridge deck paver and the mixer unit are composed of two or more segments connected together. Each segment of the track-mounted UHPC bridge deck paver includes an independent crossbeam, material trough, leveling mechanism, and vibration mechanism. Each segment of the mixer unit includes at least one UHPC wet material mixing system. Adjacent segments are fastened together by bolts.

[0015] The present invention also provides a construction process for the above-mentioned track-type UHPC bridge deck integrated construction system, including the following steps:

[0016] (1) On the UHPC bridge deck to be paved, place the UHPC dry mix at certain intervals according to the required amount;

[0017] (2) The raw material feeding mechanism hoists and unloads the UHPC dry mix into the mixer drum, starts the mixer's automatic speed control device, and completes dry mixing for 1 to 120 seconds. The automatic metering water adding device adds water to the mixing drum in a timely manner, and the mixer continues to mix until the UHPC concrete is confirmed to be qualified.

[0018] (3) Open the mixer discharge gate, and the UHPC wet material is conveyed into the trough through the chute;

[0019] (4) Place the wet curing film on the film-coating roller of the longitudinal bridge film-coating mechanism and adjust it to be parallel to the cross section of the bridge deck, and the distance between the film and the bridge deck is equal to the paving thickness. When the UHPC wet material reaches the preset storage amount in the material trough, the first and second walking mechanisms switch to the driven working mode, the walking wheel power-off brake function brake and the walking drive motor power-off idle, start the working walking mechanism (14) to drive the UHPC bridge deck integrated construction system forward. Specifically: control the action of the rail grabber and the working walking cylinder through the hydraulic control system. The rail grabber located in front of the second walking mechanism grabs the piston rod of the rail and retracts to drive the integrated construction system forward. At this time, the rail grabber located behind the first walking mechanism releases the piston rod of the rail and retracts. When the piston rod of the walking cylinder in front is about to retract into place, the rail grabber on this side releases the rail and grabs the piston rod of the rail and extends to push the integrated construction system forward. This cycle continues to achieve continuous and stable forward movement of the system. The system can be reversed by reversing the cycle.

[0020] (5) Start the vibration mechanism and vibrating motor. As the UHPC bridge deck paver moves forward, the UHPC wet material flows from the trough to the bridge deck and is leveled by the leveling plate.

[0021] (6) Check the actual thickness of the laid UHPC concrete and confirm that the thickness of the laid UHPC concrete is qualified. Otherwise, readjust the position of the leveling plate. After it is normal, enter the normal working mode of laying UHPC concrete.

[0022] (7) When the UHPC bridge deck paver moves forward, after the UHPC bridge deck paver moves forward a certain distance, the wet curing film placed on the film-covering roller is pulled open and placed on the already paved UHPC concrete surface. As the system moves forward, the wet curing film follows and is relatively fixed by the adhesive force of the tightly attached UHPC concrete surface, so that the roll wet curing film can be automatically opened longitudinally to cover the UHPC concrete surface.

[0023] (8) The mixer unit continuously mixes UHPC concrete and controls the UHPC bridge deck paver to advance at a uniform speed to complete the pre-set bridge deck paving, vibration, leveling and covering.

[0024] The beneficial effects of this invention are as follows:

[0025] (1) The track-type UHPC bridge deck integrated construction system of the present invention integrates mixing, spreading, paving and leveling into one unit. One machine can complete the entire paving process, which is convenient to use and greatly improves construction efficiency and reduces construction costs.

[0026] (2) The track-type UHPC bridge deck integrated construction system of the present invention adopts a multi-segment combination method, which can increase or decrease segments as needed to meet the paving of bridge decks of different widths, thus improving applicability.

[0027] (3) Since the track-type UHPC bridge deck paver and mixer unit in this technical solution have a large structure and heavy weight, and need to move the concrete in the material trough together during the movement, it is difficult to drive them to move using conventional driving methods. In response to this problem, this invention creatively proposes a walking auxiliary mechanism. The walking auxiliary mechanism in the front and rear directions is controlled by a hydraulic control system to provide push or pull force, thus solving the problem of insufficient driving force. Attached Figure Description

[0028] Figure 1 This is a structural schematic diagram of the track-type UHPC bridge deck integrated construction system of the present invention.

[0029] Figure 2 This is a schematic diagram of the track-mounted UHPC bridge deck paver of the present invention.

[0030] Figure 3 This is a schematic diagram of the cross-sectional structure of the track-mounted UHPC bridge deck paver of the present invention.

[0031] Figure 4 This is a schematic diagram of the rear baffle plate of the track-mounted UHPC bridge deck paver of the present invention.

[0032] Figure 5 yes Figure 1 Enlarged view of a portion of point A in the middle.

[0033] Figure 6 This is an isometric drawing of the track-type UHPC bridge deck integrated construction system of the present invention.

[0034] In the diagram: First frame 1, crossbeam 1-1, longitudinal beam 1-2, first traveling mechanism 2, traveling beam 2-1, traveling wheel 2-2, traveling drive motor 2-3, track 2-4, trough 3, front baffle 3-1, left and right side plates 3-2, rear baffle 3-3, plow-shaped shovel 3-4, groove 3-5, leveling mechanism 4, leveling plate 4-1, leveling vibration motor 4-2, leveling plate adjusting cylinder 4-3, leveling plate transmission beam 4-4, vibration mechanism 5, vibration. 5-1 Beam, 5-2 Mounting plate, 5-3 Vibrating motor, 5-4 Vibrating beam swing adjustment cylinder, 6 Longitudinal bridge film covering mechanism, 6-1 Film covering mounting bracket, 6-2 Film covering roller, 7 Second frame, 8 Mixer, 9 Raw material feeding mechanism, 10 Automatic metering water adding device, 11 Mixer self-control speed regulating device, 12 Chute, 13 Synchronous connecting rod, 14 Working walking mechanism, 14-1 Rail grabber, 14-2 Walking cylinder, 15 Second walking mechanism. Detailed Implementation

[0035] To facilitate understanding of the present invention, the present invention will be described more fully and in detail below with reference to the accompanying drawings and preferred embodiments, but the scope of protection of the present invention is not limited to the following specific embodiments.

[0036] like Figure 1 As shown, this embodiment of a track-mounted UHPC bridge deck integrated construction system includes a track-mounted UHPC bridge deck paver, a mixer unit, and a working walking mechanism 14. The mixer unit is located in front of the track-mounted UHPC bridge deck paver and is rigidly connected to the track-mounted UHPC bridge deck paver through a synchronous connecting rod 13.

[0037] like Figures 2-4 As shown, the track-mounted UHPC bridge deck paver of this embodiment includes a first frame 1, a first traveling mechanism 2, a material trough 3, a leveling mechanism 4, a vibrating mechanism 5, and a longitudinal bridge-direction film covering mechanism 6.

[0038] The first frame 1 includes a crossbeam 1-1 and longitudinal beams 1-2 respectively fixedly installed at both ends of the crossbeam 1-1.

[0039] The first traveling mechanism 2 is located on both sides of the first frame 1, including a traveling beam 2-1, a traveling wheel 2-2, a traveling drive motor 2-3, and a track 2-4. The track 2-4 is laid parallel to the bridge surface. The traveling beam 2-1 is fixed on the first frame 1. The traveling wheel 2-2 and the traveling drive motor 2-3 are installed on the traveling beam 2-1. The traveling drive motor 2-3 is used to drive the traveling wheel 2-2. The traveling wheel 2-2 is matched with the track 2-4.

[0040] The material trough 3 is a through trough arranged along the width of the bridge deck and open at the top and bottom. It is surrounded by a front baffle plate 3-1, left and right side plates 3-2, and a rear baffle plate 3-3. The front baffle plate 3-1 and left and right side plates 3-2 are fixedly connected to the first frame 1. The bottom of the front baffle plate 3-1 and left and right side plates 3-2 are close to the bridge deck reinforcement. The two ends of the rear baffle plate 3-3 are respectively attached to the left and right side plates 3-2 and slide vertically with them. A plow-shaped shovel 3-4 extending forward is provided at the lower part of the rear baffle plate 3-3. The two end faces of the rear baffle plate 3-3 are provided with grooves 3-5. Elastic sealing strips are embedded in the grooves 3-5. The rear baffle plate 3-3 is in close contact with the left and right side plate walls through the elastic sealing strips.

[0041] The leveling mechanism 4 includes a leveling plate 4-1, a leveling vibration motor 4-2, a leveling plate adjusting cylinder 4-3, and a leveling plate transmission beam 4-4. The leveling plate 4-1 is located at the bottom rear side of the rear baffle 3-3 and is connected to the rear baffle 3-3 as a whole. The bottom surface of the leveling plate 4-1 is flush with the bottom surface of the rear baffle 3-3. The leveling vibration motor 4-2 is mounted on the leveling plate 4-1. One end of the leveling plate adjusting cylinder 4-3 is connected to the leveling plate 4-1, and the other end is connected to the first frame 1. It is used to adjust the distance between the leveling plate 4-1 and the bridge surface. The upper part of the leveling plate 4-1 has a vertical opening. The lower part of the leveling plate transmission beam 4-4 is movably placed in the opening. The upper part of the leveling plate transmission beam 4-4 is fixedly connected to the crossbeam 1-1. The crossbeam 1-1 drives the leveling plate 4-1 and the rear baffle 3-3 to move in the front and back directions through the leveling plate transmission beam 4-4.

[0042] The vibration mechanism 5 is installed inside the material trough 3 and is used to vibrate the concrete stored in the material trough 3. It includes a vibration beam 5-1, a vibration motor 5-3, and a vibration beam swing adjustment cylinder 5-4. The vibration beam 5-1 is elastically connected to the mounting plate 5-2 located at the opening above the material trough 3, and the vibration beam 5-1 extends into the material trough 3. The vibration motor 5-3 is fixed to the vibration beam 5-1. One end of the vibration beam swing adjustment cylinder 5-4 is hinged to the mounting plate 5-2, and the other end is hinged to the vibration beam 5-1.

[0043] The longitudinal bridge coating mechanism 6 includes a coating mounting bracket 6-1 connected to the frame and a coating roller 6-2 mounted on the coating mounting bracket 6-1, on which a wet curing film is placed.

[0044] like Figure 1 , Figure 6 As shown, the mixer unit includes a second traveling mechanism 15, a second frame 7 connected to the second traveling mechanism 15, and a UHPC wet material mixing system mounted on the second frame 7. The second traveling mechanism 15 includes a traveling beam and traveling wheels mounted on the traveling beam, the traveling wheels cooperating with the track.

[0045] The UHPC wet material mixing system includes a mixer 8, a raw material feeding mechanism 9, an automatic metering water adding device 10, and a mixer automatic speed control device 11. The raw material feeding mechanism 9 is used to hoist the raw materials into the mixer 8. The automatic metering water adding device 10 is used to add water to the mixer 8 in a timely manner. The mixer automatic speed control device 11 is used to control and adjust the speed of the mixing motor at different process stages according to a preset program. The mixer 8 is used to mix the UHPC wet material and transport it to the material tank 3 through the chute 12. In this embodiment, the mixer 8 is a flat-mouth vertical high-speed mixer, and the mixer 8 is connected to the second frame 7 through a quick disassembly and assembly device.

[0046] like Figure 1 , Figure 5 As shown, the working walking mechanism 14 includes a walking conversion device, a hydraulic control system, and four sets of rail grippers 14-1 and walking cylinders 14-2. The walking conversion device is used to switch between the power-off braking function of the walking wheels and the power-off idling function of the walking drive motor. The four sets of rail grippers 14-1 and walking cylinders 14-2 are respectively installed on the left and right sides in front of the second walking mechanism 15 and on the left and right sides behind the first walking mechanism 2. The rail grippers 14-1 cooperate with the track 2-4, and the walking cylinders 14-2 connect the rail grippers 14-1 and the walking beam 2-1. The hydraulic control system is used to control the rail grippers 14-1 and walking cylinders 14-2 located in front of the second walking mechanism 15 and the rail grippers 14-1 and walking cylinders 14-2 located behind the first walking mechanism 2 to alternately move, propelling the entire integrated construction system forward or backward in coordination. The rail grippers in this embodiment are existing technology.

[0047] To adapt to the construction needs of different bridge deck widths, the track-mounted UHPC bridge deck paver and the mixer unit are both composed of two or more segments connected together. Each segment of the track-mounted UHPC bridge deck paver includes an independent crossbeam 1-1, a material trough 3, a leveling mechanism 4, and a vibrating mechanism 5. Each segment of the mixer unit includes at least one UHPC wet material mixing system. Adjacent segments are fastened together by bolts.

[0048] The construction process of the track-type UHPC bridge deck integrated construction system in this embodiment includes the following steps:

[0049] (1) On the UHPC bridge deck to be paved, place the UHPC dry mix at certain intervals according to the required amount;

[0050] (2) The raw material feeding mechanism hoists and unloads the UHPC dry mix into the mixer drum, starts the mixer's automatic speed control device, and completes dry mixing for 1 to 120 seconds. The automatic metering water adding device adds water to the mixing drum in a timely manner, and the mixer continues to mix until the UHPC concrete is confirmed to be qualified.

[0051] (3) Open the mixer discharge gate, and the UHPC wet material is conveyed into the trough through the chute;

[0052] (4) Place the wet curing film on the film-coating roller of the longitudinal bridge film-coating mechanism and adjust it to be parallel to the cross section of the bridge deck, and the distance between the film and the bridge deck is equal to the paving thickness. When the UHPC wet material reaches the preset storage amount in the material trough, the first and second walking mechanisms switch to the driven working mode, the walking wheel power-off brake function brake and the walking drive motor power-off idle, start the working walking mechanism (14) to drive the UHPC bridge deck integrated construction system forward. Specifically: control the action of the rail grabber and the working walking cylinder through the hydraulic control system. The rail grabber located in front of the second walking mechanism grabs the piston rod of the rail and retracts to drive the integrated construction system forward. At this time, the rail grabber located behind the first walking mechanism releases the piston rod of the rail and retracts. When the piston rod of the walking cylinder in front is about to retract into place, the rail grabber on this side releases the rail and grabs the piston rod of the rail and extends to push the integrated construction system forward. This cycle continues to achieve continuous and stable forward movement of the system. The system can be reversed by reversing the cycle.

[0053] (5) Start the vibration mechanism and vibrating motor. As the UHPC bridge deck paver moves forward, the UHPC wet material flows from the trough to the bridge deck and is leveled by the leveling plate.

[0054] (6) Check the actual thickness of the laid UHPC concrete and confirm that the thickness of the laid UHPC concrete is qualified. Otherwise, readjust the position of the leveling plate. After it is normal, enter the normal working mode of laying UHPC concrete.

[0055] (7) When the UHPC bridge deck paver moves forward, after the UHPC bridge deck paver moves forward a certain distance, the wet curing film placed on the film-covering roller is pulled open and placed on the already paved UHPC concrete surface. As the system moves forward, the wet curing film follows and is relatively fixed by the adhesive force of the tightly attached UHPC concrete surface, so that the roll wet curing film can be automatically opened longitudinally to cover the UHPC concrete surface.

[0056] (8) The mixer unit continuously mixes UHPC concrete and controls the UHPC bridge deck paver to advance at a uniform speed to complete the pre-set bridge deck paving, vibration, leveling and covering.

[0057] With the aid of the teachings present in the foregoing description and related drawings, those skilled in the art will conceive of many modifications and other embodiments of the invention. Therefore, it is to be understood that the invention is not limited to the specific embodiments disclosed, and modifications and other embodiments are considered to be included within the scope of the appended claims. Although specific terms are used herein, they are used in a general and descriptive sense only and are not intended to be limiting.

Claims

1. A track-mounted UHPC bridge deck integrated construction system, characterized in that: Includes a track-mounted UHPC bridge deck paver, a mixer unit, and a working walking mechanism (14). The track-mounted UHPC bridge deck paver includes a first frame (1), a first traveling mechanism (2), a material trough (3), a leveling mechanism (4), and a vibrating mechanism (5). The first frame (1) includes a crossbeam (1-1) and longitudinal beams (1-2) fixedly installed at both ends of the crossbeam (1-1). The first traveling mechanism (2) is located on both sides of the first frame (1) and includes a traveling beam (2-1), traveling wheels (2-2), a traveling drive motor (2-3), and a track (2-4). The track (2-4) is laid parallel to the bridge deck, and the traveling beam (2-1) is fixed on the first frame (1). The traveling wheel (2-2) and the traveling drive motor (2-3) are mounted on the traveling beam (2-1). The traveling drive motor (2-3) is used to drive the traveling wheel (2-2). The traveling wheel (2-2) travels on the track (2-4). The material trough (3) is a through trough arranged along the width of the bridge deck and open at the top and bottom. It is surrounded by a front baffle plate (3-1), left and right side plates (3-2), and a rear baffle plate (3-3). The front baffle plate (3-1) and the left and right side plates (3-2) are fixedly connected to the first frame (1). The bottom of the front baffle plate (3-1) and the left and right side plates (3-2) are close to the bridge deck steel bars. The rear baffle (3-3) has its two ends tightly attached to the left and right side plates (3-2) and slides vertically with them; the leveling mechanism (4) includes a leveling plate (4-1), a leveling vibration motor (4-2), a leveling plate adjusting cylinder (4-3), and a leveling plate transmission beam (4-4). The leveling plate (4-1) is located at the rear bottom of the rear baffle (3-3) and is connected to the rear baffle (3-3) as a whole. The bottom surface of the leveling plate (4-1) is flush with the bottom surface of the rear baffle (3-3). The leveling vibration motor (4-2) is mounted on the leveling plate (4-1). One end of the leveling plate adjusting cylinder (4-3) is connected to the... The platen (4-1) is connected at one end and at the other end to the first frame (1), which is used to adjust the distance of the platen (4-1) from the bridge deck. The upper part of the platen (4-1) has a vertical opening. The lower part of the platen transmission beam (4-4) is movably placed in the opening. The upper part of the platen transmission beam (4-4) is fixedly connected to the crossbeam (1-1). The crossbeam (1-1) drives the platen (4-1) and the rear baffle (3-3) to move in the front and back direction through the platen transmission beam (4-4). The vibration mechanism (5) is set in the material trough (3) and is used to vibrate the concrete stored in the material trough (3). The mixing unit is located in front of the track-mounted UHPC bridge deck paver and is rigidly connected to the track-mounted UHPC bridge deck paver via a synchronous connecting rod (13). It includes a second traveling mechanism (15), a second frame (7) connected to the second traveling mechanism (15), and a UHPC wet material mixing system mounted on the second frame (7). The second traveling mechanism (15) includes a traveling beam and traveling wheels mounted on the traveling beam. The traveling wheels cooperate with the road rails (2-4). The UHPC wet material mixing system includes a mixing unit. The mixer (8), raw material feeding mechanism (9), automatic metering water adding device (10), and mixer self-control speed regulating device (11) are used to hoist raw materials into the mixer (8), the automatic metering water adding device (10) is used to add water to the mixer (8) in a timely manner, and the mixer self-control speed regulating device (11) is used to control and adjust the speed of the mixing motor in different process periods according to a preset program. The mixer (8) is used to mix UHPC wet material and transport it to the material tank (3) through the chute (12). The working walking mechanism (14) includes a walking conversion device, a hydraulic control system, and four sets of rail grippers (14-1) and walking cylinders (14-2). The walking conversion device is used to switch the power-off braking function of the walking wheels and the power-off idling of the walking drive motor. The four sets of rail grippers (14-1) and walking cylinders (14-2) are respectively installed on the left and right sides in front of the second walking mechanism (15) and on the left and right sides behind the first walking mechanism (2). The rail grippers (14-1) cooperate with the rail (2-4). The walking cylinders (14-2) connect the rail grippers (14-1) and the walking beam (2-1). The hydraulic control system is used to control the rail grippers (14-1) and walking cylinders (14-2) located in front of the second walking mechanism (15) and the rail grippers (14-1) and walking cylinders (14-2) located behind the first walking mechanism (2) to alternately move, so as to drive the entire integrated construction system to move forward or backward in coordination.

2. The track-mounted UHPC bridge deck integrated construction system as described in claim 1, characterized in that: The lower part of the rear baffle plate (3-3) is provided with a plow-shaped shovel (3-4) that extends forward at an angle.

3. The track-mounted UHPC bridge deck integrated construction system as described in claim 1, characterized in that: The rear baffle plate (3-3) has grooves (3-5) on both end faces, and elastic sealing strips are embedded in the grooves (3-5). The rear baffle plate (3-3) is in close contact with the left and right side walls through the elastic sealing strips.

4. The track-mounted UHPC bridge deck integrated construction system as described in claim 1, characterized in that: The vibration mechanism (5) includes a vibration beam (5-1), a vibration motor (5-3), and a vibration beam swing adjustment cylinder (5-4). The vibration beam (5-1) is elastically connected to the mounting plate (5-2) located at the opening above the material trough (3), and the vibration beam (5-1) extends into the material trough (3). The vibration motor (5-3) is fixed on the vibration beam (5-1). One end of the vibration beam swing adjustment cylinder (5-4) is hinged to the mounting plate (5-2), and the other end is hinged to the vibration beam (5-1).

5. The track-mounted UHPC bridge deck integrated construction system as described in claim 1, characterized in that: It also includes a longitudinal bridge coating mechanism (6), which includes a coating mounting bracket (6-1) connected to the frame and a coating roller (6-2) disposed on the coating mounting bracket (6-1).

6. The track-mounted UHPC bridge deck integrated construction system as described in claim 1, characterized in that: The mixer (8) is a flat-mouth vertical high-speed mixer, and the mixer (8) is connected to the second frame (7) by a quick disassembly device.

7. A track-type UHPC bridge deck integrated construction system as described in any one of claims 1-6, characterized in that: The track-mounted UHPC bridge deck paver and the mixer unit are both composed of two or more segments connected together. Each segment of the track-mounted UHPC bridge deck paver includes an independent crossbeam (1-1), a material trough (3), a leveling mechanism (4), and a vibration mechanism (5). Each segment of the mixer unit includes at least one UHPC wet material mixing system. Adjacent segments are fastened together by bolts.

8. The construction process of the track-type UHPC bridge deck integrated construction system according to any one of claims 1-7, characterized in that, Includes the following steps: (1) On the UHPC bridge deck to be paved, place the UHPC dry mix at certain intervals according to the required amount; (2) The raw material feeding mechanism (9) hoists and unloads the UHPC dry mix into the mixer bucket, starts the mixer automatic speed control device (11), completes dry mixing for 1 to 120 seconds, and the automatic metering water adding device (10) adds water to the mixing bucket in a timely manner. The mixer continues to mix until the UHPC concrete is confirmed to be qualified. (3) Open the discharge gate of the mixer, and the UHPC wet material is transported to the trough (3) through the chute (12); (4) Place the wet curing film on the film-covering roller (6-2) of the longitudinal bridge film-covering mechanism (6) and adjust it to be parallel to the cross section of the bridge deck, and the distance between the film and the bridge deck is equal to the paving thickness. When the UHPC wet material reaches the preset storage amount in the material trough (3), the first walking mechanism (2) and the second walking mechanism (15) switch to the driven working mode, the walking wheel power-off brake function brake and the walking drive motor power-off idle, start the working walking mechanism (14) to drive the UHPC bridge deck integrated construction system forward. Specifically: control the action of the rail grabber (14-1) and the working walking cylinder (14-2) through the hydraulic control system. The rail grabber (14-1) located in front of the second walking mechanism (15) grabs the road. The system moves forward along the track (2-4), and the piston rod of the traveling cylinder (14-2) on that side retracts, driving the integrated construction system forward. At this time, the rail grabber (14-1) behind the first traveling mechanism (2) releases the track (2-4), and the piston rod of the traveling cylinder (14-2) on that side retracts. When the piston rod of the traveling cylinder (14-2) in front is about to retract into place, the rail grabber (14-1) on that side releases the track (2-4), and the rail grabber (14-1) behind simultaneously grabs the track (2-4). The piston rod of the traveling cylinder (14-2) behind extends to push the integrated construction system forward. This cycle continues continuously, achieving continuous and stable forward movement of the system. The system can be reversed by reversing the cycle. (5) Start the vibration mechanism and vibrating motor (5-3). As the UHPC bridge deck paver moves forward, the UHPC wet material flows from the trough to the bridge deck and is leveled by the leveling plate (4-1). (6) Check the actual thickness of the laid UHPC concrete and confirm that the thickness of the laid UHPC concrete is qualified. Otherwise, readjust the position of the leveling plate (4-1). After it is normal, enter the normal working mode of laying UHPC concrete. (7) When the UHPC bridge deck paver moves forward, after the UHPC bridge deck paver moves forward a certain distance, the wet curing film placed on the film-covering roller is pulled open and placed on the already paved UHPC concrete surface. As the system moves forward, the wet curing film follows and is relatively fixed by the adhesive force of the tightly attached UHPC concrete surface, so that the roll wet curing film can be automatically opened longitudinally to cover the UHPC concrete surface. (8) The mixer unit continuously mixes UHPC concrete and controls the UHPC bridge deck paver to advance at a uniform speed to complete the pre-set bridge deck paving, vibration, leveling and covering.

Images