A method, device, equipment and readable storage medium for calculating the train speed

Abstract

The present invention provides a train speed calculation method, device, equipment and readable storage medium. The method includes obtaining first information, second information and third information. The first information is the instantaneous speed of a first train when passing through the current bridge pier. The second information is the ground vibration speed corresponding to the instantaneous speed at a first position. The third information is the ground vibration speed corresponding to the instantaneous speed at a second position. Both the first position and the second position are set on the connection line between the bridge pier and the target. The shortest distance between the first position and the bridge pier is a preset distance, and the second position is set between the first position and the target. A vibration speed attenuation model is established according to the first information, the second information and the third information. The vibration speed attenuation model is used to calculate the ground vibration speed corresponding to the conduction of the instantaneous speed to the target. According to the vibration speed threshold and the vibration speed attenuation model, the maximum instantaneous vehicle speed of a second train passing through the bridge pier is obtained. The present invention can quickly obtain the maximum vehicle speed allowed when the train passes through the target through the vibration speed attenuation model.

Description

Technical Field

[0001] The present invention relates to the field of environmental engineering, and more particularly, to a train speed calculation method, device, equipment and readable storage medium. Background Art

[0002] Compared with ordinary urban roads, the environmental vibration generated by urban rail transit has characteristics such as high intensity, high frequency and long period, which will have a certain impact on surrounding buildings, especially historical and cultural buildings. In the prior art, the faster the train speed, the greater the vibration caused, resulting in a higher possibility that the train will affect ancient buildings around the train track. Therefore, there is an urgent need for a train speed calculation method to calculate the maximum vehicle speed when the train passes around ancient buildings, so as to ensure that the structure of ancient buildings around the train is not affected. Summary of the Invention

[0003] The purpose of the present invention is to provide a train speed calculation method, device, equipment and readable storage medium to improve the above problems.

[0004] To achieve the above purpose, the embodiments of the present application provide the following technical solutions:

[0005] On the one hand, the embodiments of the present application provide a train speed calculation method, the method comprising:

[0006] Obtain first information, second information and third information, where the first information is the instantaneous speed of a first train passing through a current pier, the second information is the ground vibration speed corresponding to the instantaneous speed at a first position, and the third information is the ground vibration speed corresponding to the instantaneous speed at a second position; both the first position and the second position are set on the line connecting the pier and the target, the shortest distance between the first position and the pier is a preset distance, and the second position is set between the first position and the target;

[0007] Establish a vibration speed attenuation model according to the first information, the second information and the third information, where the vibration speed attenuation model is used to calculate the ground vibration speed corresponding to the conduction of the instantaneous speed to the target;

[0008] Obtain the maximum instantaneous vehicle speed of a second train passing through the pier according to a vibration speed threshold and the vibration speed attenuation model.

[0009] On the second hand, the embodiments of the present application provide a train speed calculation device, the device comprising:

[0010] An acquisition module, configured to acquire first information, second information, and third information, where the first information is the instantaneous speed of a first train when passing through the current pier, the second information is the ground vibration speed corresponding to the instantaneous speed at a first position, and the third information is the ground vibration speed corresponding to the instantaneous speed at a second position; both the first position and the second position are set on the connection line between the pier and the target, the shortest distance between the first position and the pier is a preset distance, and the second position is set between the first position and the target;

[0011] A building module, configured to establish a vibration speed attenuation model according to the first information, the second information, and the third information, where the vibration speed attenuation model is used to calculate the ground vibration speed corresponding to the conduction of the instantaneous speed to the target;

[0012] A calculation module, configured to obtain the maximum instantaneous vehicle speed of a second train passing through the pier according to a vibration speed threshold and the vibration speed attenuation model.

[0013] In a third aspect, an embodiment of the present application provides a train speed calculation device, where the device includes a memory and a processor. The memory is used to store a computer program; the processor is used to implement the steps of the above train speed calculation method when executing the computer program.

[0014] In a fourth aspect, an embodiment of the present application provides a readable storage medium, where a computer program is stored on the readable storage medium, and the computer program implements the steps of the above train speed calculation method when executed by a processor.

[0015] The beneficial effects of the present invention are as follows: The present invention conducts a systematic study on the vibration speed and attenuation law generated during the running of a straddle monorail train, obtains the attenuation law of the vibration speed after conduction with distance, and conducts a regression analysis on this basis to construct a ground vibration speed prediction model caused by the running of a straddle monorail train, that is, a vibration speed attenuation model, which provides a quantitative basis for predicting the ground vibration speed caused by the running of a straddle monorail train. Through this prediction model, not only can the ground vibration speed corresponding to the instantaneous speed of the train at the target be calculated to determine whether the ground vibration speed at the target exceeds the maximum ground vibration speed allowed by the cultural relic building at the target, but also the maximum vehicle speed allowed when the train passes around the ancient building can be deduced. Then, by reducing the vehicle speed, the impact of rail transit on cultural relic buildings can be reduced, so as to achieve the purpose of protecting the structural integrity of cultural relic buildings.

[0016] Other features and advantages of the present invention will be described in the subsequent specification, and, in part, will be obvious from the specification, or will be understood by implementing the embodiments of the present invention. The objectives and other advantages of the present invention can be realized and obtained by the structures specifically pointed out in the written specification, claims, and drawings. Description of the Drawings

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required for use in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, without creative efforts, other relevant drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic flow chart of the train speed calculation method described in the embodiments of the present invention.

[0019] Figure 2 It is a schematic structural diagram of the train speed calculation device described in the embodiments of the present invention.

[0020] Figure 3 It is a schematic structural diagram of the train speed calculation equipment described in the embodiments of the present invention. Specific Embodiments

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the claimed present invention, but merely represents the selected embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0022] It should be noted that: similar reference numerals and letters represent similar items in the following drawings. Therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings. At the same time, in the description of the present invention, terms such as "first" and "second" are only used for distinguishing descriptions and cannot be understood as indicating or implying relative importance.

[0023] Embodiment 1

[0024] This embodiment provides a train speed calculation method for calculating the maximum allowable vehicle speed when the train passes around ancient buildings when there are ancient buildings near the straddle monorail line.

[0025] As Figure 1 shown, this embodiment provides a train speed calculation method, which includes step S1, step S2, and step S3.

[0026] Step S1: Obtain the first information, the second information, and the third information. The first information is the instantaneous speed of the first train when passing through the current pier. The second information is the ground vibration speed corresponding to the instantaneous speed at the first position. The third information is the ground vibration speed corresponding to the instantaneous speed at the second position. Both the first position and the second position are set on the line connecting the pier and the target. The shortest distance between the first position and the pier is a preset distance. The second position is set between the first position and the target.

[0027] In this step, both the collected information and the collection conditions take the Chongqing Rail Transit Line 2 as an example. By selecting a pier with measurement conditions in the straddle monorail track, where the shortest distance between the first position and the pier is the preset distance, that is, the vibration source radius. The vibration source radius is set to 3m according to the relevant regulations in the "Technical Code for Protection of Ancient Buildings against Industrial Vibration". Therefore, sensors are installed 3m perpendicular to the track extension direction of the pier to collect the instantaneous vehicle speed of the first train when passing through the pier and the ground vibration speed at 3m perpendicular to the track extension direction of the pier. Continuously monitor for 30 minutes, and 99 effective samples are collected, obtaining 99 instantaneous speeds of the first train when passing through the current pier and the ground vibration speeds corresponding to the instantaneous speeds at the first position. In addition, due to fast attenuation at close range and slow attenuation at long range, the measuring points are arranged with the principle of being dense near and sparse far. Referring to the layout requirements for vibration attenuation testing in the "Code for Test of Dynamic Characteristics of Foundation (GBT50269-2015)", within 20m, a sensor is arranged every 2m; outside 20m, a sensor is arranged every 5m. Then, monitor in three times. For the first time, monitor the vibration speeds at the points 3m, 8m, 9m, 10m, 11m, and 12m perpendicular to the track extension direction of the pier. For the second time, monitor at 3m, 15m, 16m, 17m, 18m, 19m, and 20m perpendicular to the track extension direction of the pier. For the third time, monitor at 3m, 5m, 7m, 25m, 30m, 35m, and 40m perpendicular to the track extension direction of the pier. The monitoring time is 1h continuously, obtaining the ground vibration speeds corresponding to the instantaneous speeds at multiple second positions, which is the third information.

[0028] Step S2: Establish a vibration speed attenuation model based on the first information, the second information, and the third information. The vibration speed attenuation model is used to calculate the ground vibration speed corresponding to the conduction of the instantaneous speed to the target.

[0029] Step S3: Obtain the maximum instantaneous vehicle speed of the second train when passing through the pier according to the vibration speed threshold and the vibration speed attenuation model.

[0030] In this step, the second train is the train for which data is not collected by the sensor, and the first train is the train for which data is collected by the sensor. After obtaining the vibration velocity attenuation model, only based on the instantaneous vehicle speed of the second train passing through the bridge pier, without other data, the corresponding ground vibration velocity at the target can be obtained. According to the maximum allowable ground vibration velocity of the ancient building existing at the target and the vibration velocity attenuation model, the maximum instantaneous vehicle speed of the second train passing through the bridge pier can be calculated.

[0031] Currently, compared with ordinary urban road traffic, the environmental vibration generated by urban rail transit has characteristics such as high intensity, high frequency, and long period, which will have a certain impact on surrounding buildings, especially historical and cultural buildings. In the existing technology, the faster the train speed, the greater the vibration, and the more likely it is that the train will affect the ancient buildings around the train track. Therefore, it is necessary to study the impact of train speed on the structure of ancient buildings and obtain corresponding specifications.

[0032] Therefore, in this embodiment, based on the on-site monitoring data of rail transit, a vibration velocity attenuation model is constructed through regression analysis. According to the vibration velocity attenuation model, the corresponding ground vibration velocity at the target caused by the instantaneous speed of the train can be calculated. At the same time, by the vibration velocity attenuation model and querying the maximum allowable ground vibration velocity, that is, the vibration velocity threshold, of various ancient buildings around the straddle monorail, the maximum vehicle speed of the train passing through here next without affecting the structural integrity of the ancient building can be inferred, and the corresponding specification between the train speed and the vibration velocity threshold of the ancient building is obtained.

[0033] According to the above characteristics, this embodiment can achieve low-cost, fast, and direct prediction and calculation of ground vibration velocity, and calculate the ground vibration velocity attenuated after transmitting different distances based on the current ground vibration velocity. In addition, according to the vibration velocity threshold, the maximum allowable driving speed of the train without affecting the structure of the ancient building at the target can be further inferred. This method provides an economical, accurate, and direct calculation method for calculating the train speed, and this method is widely applicable to the calculation scenario of the vibration velocity generated by the straddle monorail.

[0034] In a specific implementation manner of the present disclosure, step S2 may further include step S21 and step S22.

[0035] Step S21: Calculate the goodness of fit of the power function, S function, growth function, and exponential function for curve fitting of the first information and the second information respectively;

[0036] Step S22: Select the curve function with the highest goodness of fit to perform curve fitting on the first information and the second information to obtain a first function, and the first function is the functional relationship between the instantaneous speed of the first train passing through the current bridge pier and the corresponding ground vibration velocity at the first position.

[0037] In this embodiment, taking the data collected from the Chongqing Rail Transit Line 2 as an example, by calculating the goodness of fit of curve fitting the first information and the second information using a power function, an S function, a growth function, and an exponential function respectively, it is obtained that the power function has the highest goodness of fit. Therefore, the power function is selected for curve fitting, and the first function is specifically:

[0038] v0 = 2.94×10 -9 ×V 6.43

[0039] where V0 is the ground vibration velocity (mm / s) at the vibration source radius, and V is the instantaneous velocity (m / s) of the train passing through the pier. Therefore, only by knowing the instantaneous vehicle speed of the train passing through the pier, the ground vibration velocity at the vibration source radius can be inferred.

[0040] In a specific implementation manner of the present disclosure, after step S22, steps S23, S24, and S25 may further be included.

[0041] Step S23: Obtain the attenuation law of the vibration velocity according to the empirical formula of ground vibration attenuation caused by vehicles, where the attenuation law includes a geometric attenuation law and a damping attenuation law;

[0042] Step S24: Establish a second function according to the second information, the third information, and the attenuation law of the vibration velocity, where the second function is the functional relationship between the ground vibration velocity corresponding to the instantaneous velocity at the first position and the ground vibration velocity corresponding to the instantaneous velocity at the second position;

[0043] Step S25: Establish a vibration velocity attenuation model according to the first function and the second function.

[0044] In this embodiment, according to the empirical formula of ground vibration velocity attenuation proposed by Cui Gaohang, the geometric attenuation law is obtained as a power function of distance, and the damping attenuation law is an exponential function of distance. The attenuation law of ground vibration velocity is specifically expressed as:

[0045] A r = f1(v0)f2(r)f3(r)

[0046] where f1(v0) represents the functional relationship between the ground vibration velocity at the vibration source radius and the vibration source intensity, f2(r) represents the geometric attenuation part of the ground vibration velocity, and f3(r) represents the damping attenuation part of the ground vibration velocity.

[0047] In a specific implementation manner of the present disclosure, step S24 may further include steps S241 and S242.

[0048] Step S241: Obtain that the relationship between the ground vibration velocity attenuation and the distance is a power function according to the attenuation law of the ground vibration velocity;

[0049] Step S242: Use the second information and the third information to perform regression analysis on the power function relationship between the ground vibration velocity attenuation and the distance, and obtain a second function.

[0050] In this embodiment, since the empirical formula for the ground vibration velocity attenuation proposed by Cui Gaohang is based on the measured data of high-speed railways and other scenarios with large vibration amplitudes and long attenuation distances for high-frequency vibrations. The vibration characteristics of the straddle-type monorail are small vibration amplitudes and low vibration frequencies. Therefore, geometric attenuation or damping attenuation may be more in line with the attenuation trend of the power function. Thus, it is obtained that the relationship between the ground vibration velocity attenuation and the distance is a power function, specifically:

[0051]

[0052] where x0 is the vibration source amplitude coefficient, which reflects the correlation between the vibration source and the ground vibration velocity at the radius of the vibration source. x1 is the comprehensive attenuation coefficient, which reflects the attenuation law of the vibration velocity with distance. Perform regression analysis on the above formula according to the second information and the third information to obtain the second function, specifically:

[0053] A r = 3.851v0r -1.198

[0054] where r is the distance from the radius of the vibration source; v0 is the vibration velocity. Therefore, according to this formula, only by obtaining the instantaneous vehicle speed of the current train passing through the bridge pier and the distance from the radius of the vibration source, the ground vibration velocity attenuated with distance along the direction perpendicular to the track extension at the radius of the vibration source can be estimated. In addition, when the train is running between two adjacent bridge piers, the generated vibration velocity is the combined action of the two adjacent bridge piers. Therefore, it is necessary to collect the ground vibration velocity corresponding to the instantaneous velocity at the third position, that is, the track beam between two adjacent bridge piers, and at a vertical distance of 3 m from the track beam. An empirical formula for the vibration caused by the train passing through the straddle-type monorail when multiple vibration sources are superimposed is obtained by improving the equivalent amplitude formula proposed by Wan Yeqing, specifically:

[0055]

[0056] In the above formula, v α is the superimposed vibration velocity at point α; v α1 is the vibration velocity conducted from pier 1 to point α; v α2 is the vibration velocity conducted from pier 2 to point α; x0 is an undetermined coefficient, where v α1 and v α2All of them can be calculated by the second function. According to the ground vibration velocity corresponding to the instantaneous velocity at the third position collected, the regression analysis is performed using the least square method as the criterion to obtain the regression equation to determine that x0 in the above formula is 2.475, that is:

[0057]

[0058] According to this formula, the vibration velocity at a preset distance at any point between two adjacent bridge piers can be calculated. Combined with the second function, the attenuated ground vibration velocity of any ancient building around the straddle-type monorail train line can be directly obtained, and it can be determined whether the ground vibration velocity has an impact on the structural integrity of the ancient building. When the ground vibration velocity is greater than the vibration velocity threshold of the ancient building, it is determined that the ground vibration velocity has an impact on the structural integrity of the ancient building. When the ground vibration velocity is less than the vibration velocity threshold of the ancient building, it is determined that the ground vibration velocity has no impact on the structural integrity of the ancient building.

[0059] In a specific implementation of the present disclosure, the step S3 may further include step S31, step S32 and step S33.

[0060] S31, acquiring fourth information, where the fourth information is the distance between the first position and the target;

[0061] S32, sending the first information and the fourth information to the vibration velocity attenuation model to obtain the ground vibration velocity at the target corresponding to the first information;

[0062] S33. Determine whether the instantaneous speed of the first train when passing through the current bridge pier will affect the structure of the building at the target location based on the ground vibration velocity corresponding to the first information at the target location and the vibration velocity threshold, and calculate the maximum instantaneous speed of the second train when passing through the bridge pier.

[0063] In a specific implementation of the present disclosure, step S33 may further include step S331 and step S332.

[0064] Step S331, obtaining the maximum vibration speed allowed at the first position according to the vibration speed threshold, the fourth information and the second function;

[0065] Step S332: Obtain the maximum instantaneous speed of the second train passing through the bridge pier according to the maximum vibration speed allowed at the first position and the first function.

[0066] In this embodiment, the maximum instantaneous speed of the second train passing through the bridge pier is obtained, and the impact of the straddle-type monorail train on the cultural relics building can be reduced by reducing the speed in advance.

[0067] Example 2

[0068] As Figure 2 shown, this embodiment provides a train speed calculation device, which includes an acquisition module 901, a establishment module 902, and a calculation module 903.

[0069] The acquisition module 901 is configured to acquire first information, second information, and third information. The first information is the instantaneous speed of the first train when passing through the current pier. The second information is the ground vibration speed corresponding to the instantaneous speed at the first position. The third information is the ground vibration speed corresponding to the instantaneous speed at the second position. Both the first position and the second position are set on the line connecting the pier and the target. The shortest distance between the first position and the pier is a preset distance, and the second position is set between the first position and the target.

[0070] The establishment module 902 is configured to establish a vibration speed attenuation model according to the first information, the second information, and the third information. The vibration speed attenuation model is used to calculate the ground vibration speed corresponding to the conduction of the instantaneous speed to the target.

[0071] The calculation module 903 is configured to obtain the maximum instantaneous vehicle speed of the second train passing through the pier according to the vibration speed threshold and the vibration speed attenuation model.

[0072] In a specific embodiment of the present disclosure, the establishment module 902 includes a first calculation unit 9021 and a selection unit 9022.

[0073] The first calculation unit 9021 is configured to calculate the goodness of fit of curve fitting of the power function, S function, growth function, and exponential function to the first information and the second information respectively.

[0074] The selection unit 9022 is configured to select the curve function with the highest goodness of fit to perform curve fitting on the first information and the second information to obtain a first function. The first function is the functional relationship between the instantaneous speed of the first train passing through the current pier and the ground vibration speed corresponding to the instantaneous speed at the first position.

[0075] In a specific embodiment of the present disclosure, the device further includes a first determination unit 9023, a first establishment unit 9024, and a second establishment unit 9025.

[0076] The first determination unit 9023 is configured to obtain the attenuation law of the vibration speed according to the empirical formula of the ground vibration attenuation caused by the vehicle. The attenuation law includes the geometric attenuation law and the damping attenuation law.

[0077] The first establishing unit 9024 is configured to establish a second function according to the second information, the third information, and the attenuation law of the vibration velocity. The second function is a functional relationship between the ground vibration velocity corresponding to the instantaneous velocity at the first position and the ground vibration velocity corresponding to the instantaneous velocity at the second position.

[0078] The second establishing unit 9025 is configured to establish a vibration velocity attenuation model according to the first function and the second function.

[0079] In a specific embodiment of the present disclosure, the first establishing unit 9024 further includes a second determining unit 90241 and a regression unit 90242.

[0080] The second determining unit 90241 is configured to obtain that the relationship between the ground vibration velocity attenuation and the distance is a power function relationship according to the attenuation law of the ground vibration velocity.

[0081] The regression unit 90242 is configured to perform regression analysis on the power function relationship between the ground vibration velocity attenuation and the distance by using the second information and the third information to obtain the second function.

[0082] In a specific embodiment of the present disclosure, the calculation module 903 further includes an obtaining unit 9031, a sending unit 9032, and a judging unit 9033.

[0083] The obtaining unit 9031 is configured to obtain fourth information, where the fourth information is the distance between the first position and the target.

[0084] The sending unit 9032 is configured to send the first information and the fourth information to the vibration velocity attenuation model to obtain the ground vibration velocity corresponding to the first information at the target.

[0085] The judging unit 9033 is configured to judge whether the instantaneous velocity of the first train passing through the current pier will affect the structure of the building existing at the target according to the ground vibration velocity corresponding to the first information at the target and the vibration velocity threshold, and calculate the maximum instantaneous vehicle speed of the second train passing through the pier.

[0086] In a specific embodiment of the present disclosure, the judging unit 9033 further includes a second calculating unit 90331 and a third calculating unit 90332.

[0087] The second calculating unit 90331 is configured to obtain the maximum allowable vibration velocity at the first position according to the vibration velocity threshold, the fourth information, and the second function.

[0088] The third calculation unit 90332 is configured to obtain the maximum instantaneous vehicle speed of the second train passing through the bridge pier according to the maximum vibration speed allowed at the first position and the first function.

[0089] It should be noted that regarding the devices in the above embodiments, the specific manners in which each module performs operations have been described in detail in the embodiments related to the method, and will not be elaborated herein.

[0090] Embodiment 3

[0091] Corresponding to the above method embodiments, the present disclosure embodiments also provide a train speed calculation device. The train speed calculation device described below can be correspondingly referred to the train speed calculation method described above.

[0092] Figure 3 is a block diagram of a train speed calculation device 800 shown according to an exemplary embodiment. As Figure 3 shown, the train speed calculation device 800 may include: a processor 801, a memory 802. The train speed calculation device 800 may further include one or more of a multimedia component 803, an input / output (I / O) interface 804, and a communication component 805.

[0093] Among them, the processor 801 is used to control the overall operation of the train speed calculation device 800 to complete all or part of the steps in the above-mentioned train speed calculation method. The memory 802 is used to store various types of data to support the operation of the train speed calculation device 800. These data may include, for example, instructions for any application or method operating on the train speed calculation device 800, as well as application-related data, such as contact data, sent and received messages, pictures, audio, video, and so on. The memory 802 can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic memory, flash memory, a magnetic disk, or an optical disc. The multimedia component 803 may include a screen and an audio component. The screen can be, for example, a touch screen, and the audio component is used to output and / or input audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal can be further stored in the memory 802 or sent through the communication component 805. The audio component also includes at least one speaker for outputting audio signals. The I / O interface 804 provides an interface between the processor 801 and other interface modules, and the above-mentioned other interface modules can be a keyboard, a mouse, buttons, etc. These buttons can be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the train speed calculation device 800 and other devices. Wireless communication, such as Wi-Fi, Bluetooth, Near Field Communication (NFC), 2G, 3G, or 4G, or a combination of one or more of them. Accordingly, the communication component 805 may include: a Wi-Fi module, a Bluetooth module, and an NFC module.

[0094] In an exemplary embodiment, the train speed calculation device 800 may be implemented by one or more application specific integrated circuits (ASICs), digital signal processors (DSPs), digital signal processing devices (DSPDs), programmable logic devices (PLDs), field programmable gate arrays (FPGAs), controllers, microcontrollers, microprocessors or other electronic components, and is used to execute the above-mentioned train speed calculation method.

[0095] In another exemplary embodiment, a computer-readable storage medium including program instructions is further provided. When the program instructions are executed by a processor, the steps of the above-mentioned train speed calculation method are implemented. For example, the computer-readable storage medium may be the above-mentioned memory 802 including program instructions, and the above-mentioned program instructions may be executed by the processor 801 of the train speed calculation device 800 to complete the above-mentioned train speed calculation method.

[0096] Corresponding to the above method embodiments, the embodiments of the present disclosure also provide a readable storage medium. A readable storage medium described below can be mutually corresponded and referred to with the train speed calculation method described above.

[0097] Embodiment 4

[0098] A readable storage medium stores a computer program. When the computer program is executed by a processor, the steps of the train speed calculation method in the above method embodiments are implemented.

[0099] The readable storage medium may specifically be a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disc, or other readable storage media capable of storing program codes.

[0100] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, the present invention may have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0101] As described above, it is only the specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A train speed calculation method, characterized in that, Including: Obtain the first information, the second information, and the third information. The first information is the instantaneous speed of the first train when passing through the current bridge pier. The second information is the ground vibration speed corresponding to the instantaneous speed at the first position. The third information is the ground vibration speed corresponding to the instantaneous speed at the second position. Both the first position and the second position are set on the connection line between the bridge pier and the target. The shortest distance between the first position and the bridge pier is a preset distance, and the second position is set between the first position and the target. Establish a vibration speed attenuation model based on the first information, the second information, and the third information. The vibration speed attenuation model is used to calculate the ground vibration speed corresponding to the conduction of the instantaneous speed to the target. Obtain the maximum instantaneous vehicle speed of the second train passing through the bridge pier according to the vibration speed threshold and the vibration speed attenuation model. Among them, the establishing a vibration speed attenuation model based on the first information, the second information, and the third information includes: Calculate the goodness of fit of the power function, the S function, the growth function, and the exponential function for curve fitting of the first information and the second information respectively. Select the curve function with the highest goodness of fit to perform curve fitting on the first information and the second information to obtain a first function. The first function is the functional relationship between the instantaneous speed of the first train when passing through the current bridge pier and the ground vibration speed corresponding to the instantaneous speed at the first position.

2. The train speed calculation method according to claim 1, characterized in that After obtaining the first function by performing curve fitting on the first information and the second information with the curve function having the highest goodness of fit, it further includes: Obtain the attenuation law of the vibration speed according to the empirical formula of the ground vibration attenuation caused by the vehicle. The attenuation law includes the geometric attenuation law and the damping attenuation law. Establish a second function based on the second information, the third information, and the attenuation law of the vibration speed. The second function is the functional relationship between the ground vibration speed corresponding to the instantaneous speed at the first position and the ground vibration speed corresponding to the instantaneous speed at the second position. Establish a vibration speed attenuation model based on the first function and the second function.

3. The train speed calculation method according to claim 2, wherein The establishing a second function based on the second information, the third information, and the attenuation law of the vibration speed includes: Obtain that the relationship between the ground vibration speed attenuation and the distance is a power function relationship according to the attenuation law of the vibration speed. Perform regression analysis on the power function relationship between the ground vibration speed attenuation and the distance using the second information and the third information to obtain a second function.

4. A train speed calculation device, characterized in that, Including: An acquisition module, configured to acquire the first information, the second information, and the third information. The first information is the instantaneous speed of the first train when passing through the current bridge pier. The second information is the ground vibration speed corresponding to the instantaneous speed at the first position. The third information is the ground vibration speed corresponding to the instantaneous speed at the second position. Both the first position and the second position are set on the connection line between the bridge pier and the target. The shortest distance between the first position and the bridge pier is a preset distance, and the second position is set between the first position and the target. A building module, configured to build a vibration velocity attenuation model according to the first information, the second information and the third information, where the vibration velocity attenuation model is used to calculate the ground vibration velocity corresponding to the instantaneous velocity conducted to the target; A calculation module, configured to obtain the maximum instantaneous vehicle speed of the second train passing through the bridge pier according to a vibration velocity threshold and the vibration velocity attenuation model; Wherein, the building module includes: A first calculation unit, configured to calculate the goodness of fit of curve fitting of a power function, an S function, a growth function and an exponential function to the first information and the second information respectively; A selection unit, configured to select the curve function with the highest goodness of fit to perform curve fitting on the first information and the second information to obtain a first function, where the first function is the functional relationship between the instantaneous velocity of the first train passing through the current bridge pier and the ground vibration velocity corresponding to the instantaneous velocity at the first position; 5. The train speed calculation device according to claim 4, characterized in that The device further includes: A first determination unit, configured to obtain the attenuation law of the vibration velocity according to an empirical formula for the attenuation of ground vibration caused by a vehicle, where the attenuation law includes a geometric attenuation law and a damping attenuation law; A first building unit, configured to build a second function according to the second information, the third information and the attenuation law of the vibration velocity, where the second function is the functional relationship between the ground vibration velocity corresponding to the instantaneous velocity at the first position and the ground vibration velocity corresponding to the instantaneous velocity at the second position; A second building unit, configured to build a vibration velocity attenuation model according to the first function and the second function; 6. The train speed calculation device according to claim 5, characterized in that, The first building unit includes: A second determination unit, configured to obtain that the relationship between the ground vibration velocity attenuation and the distance is a power function relationship according to the attenuation law of the vibration velocity; A regression unit, configured to perform regression analysis on the power function relationship between the ground vibration velocity attenuation and the distance by using the second information and the third information to obtain a second function; 7. A train speed calculation device, characterized in that, including: A memory, configured to store a computer program; A processor, configured to implement the steps of the train speed calculation method according to any one of claims 1 to 3 when executing the computer program; 8. A readable storage medium, characterized in that: The computer program is stored on a readable storage medium, and when the computer program is executed by a processor, the steps of the train speed calculation method according to any one of claims 1 to 3 are implemented.

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