Track plate buoyancy monitoring device based on buckling tool
By designing a buoyancy monitoring device based on the pressing tool during the self-contained concrete pouring of CRTSⅢ type plate ballastless tracks, the buoyancy changes of the track plates are monitored in real time, and the problem of unstable displacement of the track plates is solved, and dynamic adjustment and quality improvement of the construction process are achieved.
Patent Information
- Application Number
- CN202421360498.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-04-01
- Estimated Expiration
- 2034-06-14
AI Technical Summary
During the self-contained concrete pouring process of CRTSⅢ type plate ball-free tracks, the track plates are prone to vertical displacement due to concrete floating, and the existing technology is difficult to monitor and adjust in real time, resulting in difficult to ensure construction quality.
A rail plate buoyancy monitoring device based on the buckle tool is designed, including a buckle force measuring device and a vertical force measuring device. Through these buckle measuring devices, the buoyancy changes of the track plate are monitored in real time, providing data to support dynamic adjustment of the construction process and optimization of the buckle tool structure.
It realizes accurate measurement of buoyancy on track plates during self-contained concrete pouring, provides real-time data support for the construction process, and ensures the displacement constraints of track plates and the improvement of construction quality.
Smart Images
Figure CN222700744U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of rail transportation, in particular to a track slab buoyancy monitoring device during the pouring process of self-compacting concrete of a CRTSⅢ type slab ballastless track. Background Art
[0002] As a track structure with independent intellectual property rights in my country, the CRTSⅢ slab track structure has been widely used in my country's high-speed railway construction and has achieved good results. From bottom to top, the CRTSⅢ slab track structure mainly consists of a concrete base plate, a self-compacting concrete filling layer and a prefabricated track plate. During the construction process, the self-compacting concrete is injected from the grouting hole in the middle of the top surface of the track plate, thereby forming a self-compacting concrete filling layer between the track plate and the base plate. During the pouring of the self-compacting concrete, the floating effect of the concrete on the track plate gradually increases, resulting in vertical displacement of the track plate. Therefore, in order to prevent the large floating deformation of the track plate from having an adverse effect on the subsequent track laying construction, a buckling limit fixture is required to constrain the displacement of the track plate during the pouring of the self-compacting concrete.
[0003] The existing track plate clamping and limiting fixtures use multiple limiting devices across the track plate, and the limiting fixtures apply a vertical downward clamping force to the track plate to limit the floating deformation of the track plate. During application, a certain clamping force is applied to the clamping fixture through a torque wrench, but the specific value of the applied clamping force is not clear. At the same time, the floating effect of the concrete on the track plate during the pouring process is also difficult to quantify. The pouring quality is determined only by the displacement detection results of the track plate after the pouring is completed, and timely correction during the construction operation cannot be achieved. Therefore, in order to clarify the stress state of the track plate during the track plate laying construction, it is necessary to invent a track plate buoyancy monitoring device during the pouring of self-compacting concrete, so as to provide data support for dynamic adjustment of the construction process and optimization of the clamping fixture structure design. Utility Model Content
[0004] The utility model provides a buoyancy monitoring device for a track plate during the pouring of self-compacting concrete for a CRTS III type slab ballastless track, so as to realize accurate measurement of the buoyancy exerted on the CRTS III type ballastless track plate during the pouring of self-compacting concrete, which can not only provide data support for dynamic adjustment of the ballastless track construction process and optimization of the design of the buckling tooling structure, but also provide a beneficial approach for the information construction of the track plate and the establishment of construction quantitative standards.
[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions, specifically: a track plate buoyancy monitoring device based on a crimping fixture, comprising a track plate and a base plate, the track plate being arranged above the base plate, and also comprising a crimping fixture and a fine-adjusting device, the upper end of the crimping fixture spans the track plate, the lower end of the crimping fixture is fixedly connected to the base plate, a crimping force measuring device is also arranged on the crimping fixture, and the lower end of the crimping force measuring device is against the track plate; the fine-adjusting device is arranged between the track plate and the base plate, and a vertical force measuring device is arranged between the fine-adjusting device and the base plate.
[0006] Preferably, the crimping tooling includes a limiting beam, a crimping force measuring device and a base, the base is fixedly connected to both sides of the limiting beam, the crimping force measuring device passes through the limiting beam and presses against the track plate, and the limiting beam limits the crimping force measuring device; an embedded sleeve is provided in the base plate, and a fastening bolt is provided to vertically pass through the base of the crimping tooling and be tightened in the embedded sleeve; a transverse limiting bolt is also provided on the base, and the transverse limiting bolt passes through the base and presses against the side of the track plate.
[0007] Preferably, the buckling force measuring device includes a pressure sensor, the limiting beam is a hollow rectangular parallelepiped, the pressure sensor is arranged in the limiting beam, and the top and bottom of the pressure sensor are against the inner wall of the limiting beam.
[0008] Preferably, the buckling force measuring device also includes a pressure-bearing screw and a ball-jointed pressure plate, the pressure sensor is provided with an internal thread, the pressure-bearing screw and the pressure sensor are connected by threaded cooperation, and the pressure-bearing screw passes through the limiting beam and the pressure sensor and is connected to the ball-jointed pressure plate, and the ball-jointed pressure plate is against the track plate.
[0009] Preferably, the upper end of the fine-adjusting device is fixedly connected to both sides of the track plate, the force measuring device of the fine-adjusting device is a pressure sensor, and a pressure sensor is arranged between each fine-adjusting device and the base plate below the track plate.
[0010] Preferably, a digital display is further included, and the crimping tool is provided with the digital display, and the pressure sensor is connected to the digital display by wire.
[0011] Preferably, a pressure monitoring device is provided at each end of the limit beam as a set of buckling fixture force measuring devices, and a pressure monitoring device is provided at the relative position of the fine adjustment device on both sides of the track plate as a set of buckling fixture force measuring devices, and 4 sets of buckling fixture force measuring devices are installed on one track plate. 2 sets of buckling fixture force measuring devices are installed on one track plate.
[0012] The beneficial technical effect of the utility model is that the clamping fixture spans the track plate, force measuring devices are provided at both ends of the limit beam, and vertical force measuring devices are provided at the fine adjustment devices on both sides of the track plate. The clamping fixture can be used to limit the track plate during the pouring of self-compacting concrete, and the clamping fixture force measuring device and the vertical force measuring device can be combined to monitor the changes in the buoyancy of the track plate during the construction process in real time. The device has a simple structure and is easy to assemble and disassemble. It can not only quantify the buoyancy effect of self-compacting concrete on the track plate, but also provide data support for dynamic adjustment of track plate construction and optimization of the clamping fixture structure design. BRIEF DESCRIPTION OF THE DRAWINGS
[0013] Figure 1 This is a schematic diagram of the overall installation during construction in the embodiment;
[0014] Figure 2 It is a schematic diagram of the installation of the clamping tool force measuring device during construction in the embodiment;
[0015] Figure 3 This is a schematic diagram of the buckling tool structure in the embodiment;
[0016] Figure 4 This is a schematic diagram of the installation of a vertical force measuring device during construction in the embodiment;
[0017] In the figure: the clamping fixture 1, the limiting beam 11, the pressure screw 12, the pressure sensor 13, the ball joint pressure plate 14, the base 15, the digital display 16, the track plate 2, the grouting hole 21, the observation hole 22, the track support platform 23, the fine adjustment device 3, the self-compacting concrete filling layer 4, the base plate 5, the embedded sleeve 6, the side formwork 7, and the fastening bolts 8. DETAILED DESCRIPTION
[0018] The present invention is further described below in conjunction with the embodiments and drawings:
[0019] like Figure 1 , Figure 2 and Figure 3As shown, the buckling fixture 1 in this embodiment is an integrated door-type structure. The upper end of the buckling fixture 1 crosses the track plate 2. The buckling fixture 1 includes a limit beam 11, a buckling force measuring device and a base 15. The base 15 is fixedly connected to both sides of the limit beam 11. The limit beam 11 at the upper end of the buckling fixture 1 crosses the track plate 2, and the base 15 at the lower end of the buckling fixture 1 is fixedly connected to the base plate 5. The buckling force measuring device is located at both ends of the limit beam 11, including a pressure screw 12, a pressure sensor 13 and a ball joint pressure plate 14. The pressure screw 12 is sleeved with the pressure sensor 13 with an internal thread. The limit beam 11 is a hollow rectangular parallelepiped. The pressure sensor 13 is arranged at the hollow structure of the limit beam 11, and the top and bottom of the pressure sensor 13 are against the inner wall of the limit beam 11. The limit beam 11 can limit the pressure sensor 13 vertically. The pressure screw 12 passes through the limit beam 11 and the pressure sensor 13 and is connected to the ball joint pressure plate 14, and the ball joint pressure plate 14 is against the track plate 2. When the pressure screw 12 is adjusted, the ball joint pressure plate 14 will move vertically, but the spatial position of the pressure sensor 13 will not change.
[0020] like Figure 4 As shown, the fine adjustment device 3 is located between the base plate 5 and the track plate 2, and is the load-bearing structure of the track plate 2. The vertical force measuring device of the fine adjustment device 3 is located below the fine adjustment device 3. In order to constrain the displacement change of the track plate 2 during the pouring process of the self-compacting concrete, the track plate 2 needs to be limited in vertical and lateral displacement. Figure 2 In this embodiment, the vertical limit of the track plate 2 is achieved by adjusting the upper end of the pressure screw 12 in the clamping fixture 1 to make the ball joint pressure plate 14 contact the track plate 2. By rotating the upper end of the pressure screw 12, the ball joint pressure plate 14 applies a clamping pressure of 4-6kN to the track plate 2, thereby constraining the track plate 2 in the vertical direction.
[0021] The lateral limit of the track plate 2 is achieved by adjusting the lateral limit bolts in the buckling fixture 1 to contact the track plate 2 to realize the horizontal displacement constraint of the track plate 2. An embedded sleeve 6 is provided in the base plate 5, and the fastening bolts vertically pass through the base 15 of the buckling fixture 1 and are tightened in the embedded sleeve 6, so that the base 15 of the buckling fixture 1 is fixed on the base plate 5. A lateral limit bolt is also provided on the base 15 of the buckling fixture 1, and a through threaded hole is provided on the base 15. The lateral limit bolt passes through the base 15 in a threaded matching manner and contacts the side of the track plate 2.
[0022] like Figure 1 and Figure 4As shown, the pressure monitoring device includes a fine adjustment device 3 and a pressure sensor 13. The fine adjustment devices 3 are arranged on both sides of the track plate 2. A base plate 5 is arranged below the track plate 2. A pressure sensor 13 is arranged between each fine adjustment device 3 and the base plate 5. In order to make the force of each pressure sensor 13 controllable and readable, in this embodiment, a buckling force measuring device is arranged at each end of the limiting crossbeam 11 as a group of monitoring devices, and 4 groups of monitoring devices are installed on one track plate 2. The layout positions are symmetrically distributed along the center line of the track plate 2, and are arranged on one side between the No. 1 and No. 2 rail support platforms 23, and the No. 3 and No. 4 rail support platforms 23. A pressure monitoring device is arranged at the relative position of the fine adjustment device 3 on both sides of the track plate 2 as a group of buckling fixture 1 force measuring devices, and 2 groups of buckling fixture 1 force measuring devices are installed on a single track plate 2.
[0023] In this embodiment, the data transmission method of the pressure sensor 13 is to connect the pressure sensor 13 to the digital display 16 through a wire, and the digital display 16 wirelessly transmits the data to the data coordinator in the form of a private protocol. The data coordinator transmits the data to the host computer through the local area network, thereby realizing real-time analysis, monitoring and storage of the buoyancy on the track plate 2.
[0024] like Figures 1 to 4 As shown, in this embodiment, the specific application method of the buoyancy monitoring device of the track plate 2 is as follows: in the rough paving stage, after the track plate 2 is adjusted to the position above the base plate 5, after the pad is set on the base plate 5, the track plate 2 is placed on the pad according to the laying-out position, and the fine adjustment device 3 and the corresponding force measuring device are sequentially installed at the position of the hoisting hole of the track plate 2. After the rough paving of the track plate 2 is completed, the limit fixture is installed, and the fastening bolt 8 is used to connect the buckling fixture 1 to the reserved sleeve of the base plate 5 through the reserved through hole of the limit fixture. The side formwork 7 is installed on the outside of the track plate 2, and the side formwork is set on the base plate 5. After grouting, the self-compacting concrete can fill the cavity between the track plate 2 and the base plate 5.
[0025] A grouting hole 21 is provided in the middle of the track plate 2, and observation holes 22 are provided on both sides of the track plate 2. In the fine adjustment and buckle pressure application stage, the track plate 2 is fine-tuned with the help of the total station measurement data. After meeting the design requirements, the two pressure-bearing screws 12 in the limit device are synchronously adjusted to apply buckle pressure to the track plate 2. The specific value of the buckle pressure applied can be displayed by the digital display 16, usually 4-6kN is appropriate. After the buckle pressure of the entire track plate 2 is applied, the horizontal limit bolts are adjusted to constrain the horizontal displacement of the track plate 2. Subsequent grouting operations can then be carried out, during which grouting is carried out through the grouting hole 21 of the track plate 2, and the grouting conditions of the surrounding overflow holes and observation holes 22 are observed. After the construction requirements are met, the grouting is stopped. The slurry will gradually form a self-compacting concrete filling layer between the track plate 2 and the base plate 5. The grouting process monitors the buckle pressure of the track plate 2 and the pressure borne by the fine adjustment device 3 in real time and continuously, and uses the data coordinator as the data transmission intermediary to synchronously transmit the monitoring data to the host computer for data processing, analysis and storage.
[0026] like Figures 1 to 4 As shown, in this embodiment, the specific process of the buoyancy effect on the track plate 2 is as follows: After the entire buoyancy monitoring device is installed, the sum of the values measured by the pressure sensors 13 below all the fine-tuning devices 3 is the deadweight of the track plate 2. After the track plate 2 is fine-tuned, a certain amount of buckling pressure is applied to the track plate 2 by adjusting the limit nut. The specific value can be read one-to-one by the digital display 16. At this time, the deadweight of the track plate 2, the buckling pressure applied by the limit device and the pressure on the fine-tuning device 3 can all be determined. This can be regarded as the initial state of the buoyancy measurement of the track plate 2 during the pouring of the self-compacting concrete. When the track plate 2 begins to be poured, the track plate 2 will float and deform under the action of the self-compacting concrete. At this time, the buoyancy applied by the self-compacting concrete on the track plate 2 can be determined by calculating the deadweight of the track plate 2, the buckling pressure applied by the limit device and the pressure on the fine-tuning device 3 to determine the real-time change of the buoyancy. After clarifying the changing law of the buoyancy force exerted by the self-compacting concrete on the track slab 2 during the pouring process of the self-compacting concrete, and combining it with the subsequently measured displacement deviation of the track slab 2, it can provide data support for the dynamic adjustment of the track slab 2 construction and the structural design optimization of the clamping tool 1, and also provide a useful way for the information construction of the track slab 2 and the establishment of quantitative construction standards.
[0027] Obviously, without departing from the principle of the present invention, several improvements or modifications made should be regarded as within the protection scope of the present invention.
Claims
1. A track plate buoyancy monitoring device based on a buckling tool, comprising a track plate and a base plate, wherein the track plate is arranged above the base plate, and is characterized in that: It also includes a crimping tool and a fine-adjusting device. The upper end of the crimping tool spans the track plate, and the lower end of the crimping tool is fixedly connected to the base plate. A crimping force measuring device is also provided on the crimping tool, and the lower end of the crimping force measuring device is against the track plate; the fine-adjusting device is arranged between the track plate and the base plate, and a vertical force measuring device is provided between the fine-adjusting device and the base plate.
2. A track plate buoyancy monitoring device based on a buckling fixture according to claim 1, characterized in that: The crimping tooling includes a limiting beam, a crimping force measuring device and a base. The base is fixedly connected to both sides of the limiting beam. The crimping force measuring device passes through the limiting beam and presses against the track plate, and the limiting beam limits the crimping force measuring device. An embedded sleeve is provided in the base plate, and a fastening bolt is provided to vertically pass through the base of the crimping tooling and be tightened in the embedded sleeve. A transverse limiting bolt is also provided on the base, and the transverse limiting bolt passes through the base and presses against the side of the track plate.
3. A track plate buoyancy monitoring device based on a buckling tool according to claim 2, characterized in that: The buckling force measuring device comprises a pressure sensor. The limit beam is in the shape of a hollow cuboid. The pressure sensor is arranged in the limit beam, and the top and bottom of the pressure sensor are both against the inner wall of the limit beam.
4. A track plate buoyancy monitoring device based on a buckling fixture according to claim 3, characterized in that: The buckling force measuring device also includes a pressure-bearing screw and a ball-jointed pressure plate. The pressure sensor is provided with an internal thread. The pressure-bearing screw and the pressure sensor are connected by threaded cooperation. The pressure-bearing screw passes through the limiting crossbeam and the pressure sensor and is connected to the ball-jointed pressure plate. The ball-jointed pressure plate is against the track plate.
5. A track plate buoyancy monitoring device based on a buckling fixture according to claim 4, characterized in that: The upper end of the fine-adjusting device is fixedly connected to both sides of the track plate. The force measuring device of the fine-adjusting device is a pressure sensor. A pressure sensor is arranged between each fine-adjusting device and the base plate below the track plate.
6. A track plate buoyancy monitoring device based on a buckling fixture according to claim 5, characterized in that: It also includes a digital display, which is arranged on the crimping tooling, and the pressure sensor is connected to the digital display by wire.