CN113641947B - Roadbed compaction uniformity calculation method, device and equipment and readable storage medium - Google Patents
Roadbed compaction uniformity calculation method, device and equipment and readable storage medium Download PDFInfo
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- CN113641947B CN113641947B CN202111205132.4A CN202111205132A CN113641947B CN 113641947 B CN113641947 B CN 113641947B CN 202111205132 A CN202111205132 A CN 202111205132A CN 113641947 B CN113641947 B CN 113641947B
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Abstract
The invention provides a roadbed compaction uniformity calculation method, a roadbed compaction uniformity calculation device, roadbed compaction uniformity calculation equipment and a readable storage medium, and relates to the technical field of roadbed compaction, wherein the roadbed compaction uniformity calculation method comprises the steps of dividing a roadbed into at least one sub-road section, and dividing each sub-road section into at least one rolling lane; sending a first control command, wherein the first control command comprises a command for controlling the vibratory roller to roll the road base for one time; acquiring first information, wherein the first information comprises a first acceleration signal time-course curve acquired by a first acceleration sensor and a second acceleration signal time-course curve acquired by at least one second acceleration sensor; according to the method, the uniformity coefficient of the roadbed is calculated by processing the acquired dynamic signals on the vibratory roller, the height does not need to be measured manually in the whole process, and errors caused by manual operation are reduced.
Description
Technical Field
The invention relates to the technical field of roadbed compaction, in particular to a roadbed compaction uniformity calculation method, a roadbed compaction uniformity calculation device, roadbed compaction uniformity calculation equipment and a readable storage medium.
Background
At present, no clear detection technology for the uniformity of roadbed compaction (filling) exists, the existing detection is judged based on elevation, whether the roadbed is uniform or not is actually related to the density of fillers inside the roadbed, the distribution of seasoning proportioning materials and the like, only great limitation can be shown by only performing evaluation from elevation, the design specification of a highway cement concrete pavement requires that the roadbed is stable, dense and homogeneous and provides uniform support for a pavement structure, and the design specification of a highway asphalt pavement requires that the roadbed is dense, uniform and stable, but no specific related detection method exists, so that the detection on the uniformity of roadbed compaction has great defect.
Disclosure of Invention
The invention aims to provide a roadbed compaction uniformity calculation method, a roadbed compaction uniformity calculation device, roadbed compaction uniformity calculation equipment and a readable storage medium, so that the problems are solved. In order to achieve the purpose, the technical scheme adopted by the invention is as follows:
in a first aspect, the present application provides a roadbed compaction uniformity calculation method, including:
dividing a roadbed into at least one section of sub-road section, and dividing each sub-road section into at least one rolling lane;
sending a first control command, wherein the first control command comprises a command for controlling a vibratory roller to roll the roadbed for one time;
acquiring first information, wherein the first information comprises a first acceleration signal time-course curve acquired by a first acceleration sensor and a second acceleration signal time-course curve acquired by at least one second acceleration sensor, the first acceleration sensor is arranged on a frame of a vibration press machine, and each second acceleration sensor is arranged on a vibration wheel of the vibration press machine;
and performing energy distribution calculation according to the first information to obtain compaction uniformity.
Further, the performing energy distribution calculation according to the first information to obtain compaction uniformity includes:
extracting a first sub acceleration signal time-course curve corresponding to each rolling lane from a first acceleration signal time-course curve; extracting a second sub acceleration signal time-course curve corresponding to each rolling lane from a second acceleration signal time-course curve;
respectively decomposing a first frequency domain signal corresponding to each rolling lane to obtain a preset number of decomposed layer frame frequency domain sub-signals, wherein the first frequency domain signal is a curve obtained by converting a time curve and a frequency curve of a first sub-acceleration signal;
respectively carrying out combined decomposition on time-course curves of all the second sub-acceleration signals corresponding to each rolling lane to obtain vibration wheel frequency domain sub-signals with the preset decomposition layers;
calculating to obtain second information corresponding to each sub-road section according to the vibration wheel frequency domain sub-signal and the rack frequency domain sub-signal corresponding to each sub-road section, wherein the second information comprises energy transfer spectrums with preset decomposition layers;
and calculating the compaction uniformity of the roadbed according to the second information corresponding to each sub-road section and a first preset formula.
Further, the calculating the energy distribution according to the first information to obtain the compaction uniformity, and then comprises:
acquiring second information, wherein the second information comprises a displacement signal time-course curve acquired by a displacement sensor 73, and the displacement sensors 73 are all arranged on a frame of the vibration press;
and correcting the compaction uniformity according to the displacement signal time course curve to obtain a corrected value, and updating the compaction uniformity into the corrected value.
Further, the modifying the compaction uniformity according to the displacement signal time course curve to obtain a modified value includes:
extracting a second sub-displacement signal time-course curve corresponding to each rolling lane according to second information;
calculating to obtain a compaction uniformity correction coefficient according to each second sub-displacement signal time-course curve;
and multiplying the compaction uniformity correction coefficient and the compaction uniformity to obtain the correction value.
In a second aspect, the present application further provides a roadbed compaction uniformity calculation device, including: the device comprises a dividing unit, a sending unit, a first obtaining unit and a first calculating unit;
the dividing unit is used for dividing the roadbed into at least one sub-road section and dividing each sub-road section into at least one rolling lane;
the device comprises a sending unit, a judging unit and a control unit, wherein the sending unit is used for sending a first control command, and the first control command comprises a command for controlling the vibratory roller to roll the roadbed for one time;
the first acquisition unit is used for acquiring first information, the first information comprises a first acceleration signal time-course curve acquired by a first acceleration sensor and a second acceleration signal time-course curve acquired by at least one second acceleration sensor, the first acceleration sensor is arranged on a frame of the vibration press machine, and each second acceleration sensor is arranged on a vibration wheel of the vibration press machine;
and the first calculating unit is used for carrying out energy distributivity calculation according to the first information to obtain compaction uniformity.
Further, the first calculation unit includes:
the first extraction unit is used for extracting a first sub acceleration signal time-course curve corresponding to each rolling lane from a first acceleration signal time-course curve; extracting a second sub acceleration signal time-course curve corresponding to each rolling lane from a second acceleration signal time-course curve;
the first decomposition unit is used for decomposing a first frequency domain signal corresponding to each rolling lane respectively to obtain a preset decomposition layer number of frame frequency domain sub-signals, and the first frequency domain signal is a curve obtained by converting a time course curve frequency domain of a first sub-acceleration signal;
the second decomposition unit is used for respectively and compositely decomposing all the second sub-acceleration signal time-course curves corresponding to each rolling lane to obtain vibrating wheel frequency domain sub-signals with the preset decomposition layers;
the second calculating unit is used for calculating to obtain second information corresponding to each sub-road section according to the vibration wheel frequency domain sub-signal and the rack frequency domain sub-signal corresponding to each sub-road section, wherein the second information comprises energy transfer spectrums with preset decomposition layers;
and the third calculating unit is used for calculating the compaction uniformity of the roadbed according to the second information corresponding to each sub-road section and the first preset formula.
Further, still include:
the second obtaining unit is used for obtaining second information, the second information comprises displacement signal time-course curves acquired by displacement sensors 73, and the displacement sensors 73 are arranged on a frame of the vibration press;
and the correction unit is used for correcting the compaction uniformity according to the displacement signal time course curve to obtain a corrected value, and updating the compaction uniformity into the corrected value.
Further, the correction unit includes:
the third extraction unit is used for extracting a second sub-displacement signal time-course curve corresponding to each rolling lane according to the second information;
the coefficient calculation unit is used for calculating a compaction uniformity correction coefficient according to each second sub-displacement signal time-course curve;
and the ninth calculation unit is used for multiplying the compaction uniformity correction coefficient and the compaction uniformity to obtain the correction value.
In a third aspect, the present application further provides a subgrade compaction uniformity calculation apparatus, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the roadbed compaction uniformity calculation method when the computer program is executed.
In a fourth aspect, the present application further provides a readable storage medium, on which a computer program is stored, the computer program, when being executed by a processor, implementing the steps of the roadbed-based compaction uniformity calculation method.
The invention has the beneficial effects that:
firstly, the uniformity coefficient of the roadbed is calculated by processing the acquired dynamic signals on the vibratory roller, the whole process does not need to manually measure the elevation, the error caused by manual operation is reduced, and the result can be directly obtained according to dynamic calculation after the vibratory roller rolls once, which is faster than manual measurement;
secondly, converting an upper vibration acceleration signal of the vibratory roller into a frequency domain signal, decomposing the signal, selecting a characteristic sub-signal, calculating a compaction uniformity subentry coefficient, calculating a uniformity state coefficient, using a calculation result of elevation displacement as a correction coefficient, and finally calculating a uniformity coefficient, wherein a sheet surface measurement result of compaction uniformity of a roadbed only by using a displacement signal is reduced in the calculation process;
and thirdly, the method takes the frequency spectrum characteristic of the vibration acceleration signal as a starting point, uses a signal decomposition method, selects the characteristic sub-signal and calculates the compaction uniformity coefficient, uses elevation displacement as a correction coefficient, and finally calculates the uniformity coefficient, so that the vibration characteristic of the roadbed filling rock-soil body can be effectively reflected, and the uniformity of roadbed compaction is reflected.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the embodiments of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic flow chart of a roadbed compaction uniformity calculation method according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of the rack according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a roadbed compaction uniformity calculation device according to an embodiment of the invention;
fig. 4 is a schematic structural diagram of the roadbed compaction uniformity calculation device in the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
Example 1:
the embodiment provides a roadbed compaction uniformity calculation method.
Referring to fig. 1, it is shown that the method includes step S100, step S200, step S300 and step S400.
S100, dividing the roadbed into at least one sub-road section, and dividing each sub-road section into at least one rolling lane.
It is understood that the method for dividing the roadbed into the sections with the multi-segment value in the present step is to divide the roadbed by a preset length, wherein in the method, a sub-section is proposed to be divided by 200m as a standard. For those skilled in the art, the division of the sub-segments may be divided according to actual requirements, and it can also be understood that the more the division of the sub-segments is, the higher the calculation accuracy of the uniformity is.
Meanwhile, it should be noted that, for different road beds, because the range of rolling by the vibratory roller is limited, the rolling lane into which each sub-section can be divided needs to be determined according to the width of the actual rolling road bed, so that no specific limitation is made in the present application.
S200, sending a first control command, wherein the first control command comprises a command for controlling the vibratory roller to roll the road foundation once.
S300, first information is obtained, the first information comprises a first acceleration signal time-course curve acquired by a first acceleration sensor 72 and a second acceleration signal time-course curve acquired by at least one second acceleration sensor 71, the first acceleration sensor 72 is arranged on a rack 74 of the vibration press, and each second acceleration sensor 71 is arranged on a vibration wheel of the vibration press.
In the present embodiment, the number of the second acceleration sensors 71 is four, and the second acceleration sensors are located at the edge of the vibrating wheel. See the sensor arrangement schematic of fig. 2. And the first acceleration sensor 72 is located on a frame 74 mounted on the vibratory wheel.
S400, calculating the energy distribution according to the first information to obtain the compaction uniformity.
It should be noted that the energy distribution calculation referred to in the present method is an energy distribution calculation of the roadbed.
In the method, the energy distribution is calculated by a plurality of groups of vibration acceleration signals of the vibratory roller, and compared with the method of judging by adopting displacement signals in the prior art, the method reduces the result of one-sided measurement of the compaction uniformity of the roadbed by only using the displacement signals. Meanwhile, in the embodiment, relevant operation parameters of the vibratory press, such as vehicle speed and vibration working conditions used by the vibratory press, are not introduced, so that the influence of the tool of the vibratory press on the uniformity coefficient is effectively reduced, and the calculation error is effectively reduced. The whole using process of the method is a dynamic testing process, and a calculation result can be obtained after the foundation is compacted by the vibratory roller, so that human errors can be effectively reduced.
In some specific embodiments, in order to obtain the rolling compaction uniformity state coefficient corresponding to the roadbed, the energy distribution calculation process mentioned in the method further includes step S410, step S420, step S430, step S440, and step S450 in step S400.
S410, extracting a first sub acceleration signal time-course curve corresponding to each rolling lane from the first acceleration signal time-course curve; and extracting a second sub acceleration signal time-course curve corresponding to each rolling lane from the second acceleration signal time-course curve.
And S420, respectively decomposing the first frequency domain signal corresponding to each rolling lane to obtain a plurality of rack 74 frequency domain sub-signals of a preset decomposition layer, wherein the first frequency domain signal is a curve obtained by converting the time course curve frequency domain of the first sub-acceleration signal.
And S430, respectively carrying out combined decomposition on time-course curves of all second sub-acceleration signals corresponding to each rolling lane to obtain the vibration wheel frequency domain sub-signals with the preset decomposition layers.
And S440, calculating to obtain second information corresponding to each sub-road section according to the vibration wheel frequency domain sub-signal corresponding to each sub-road section and the rack 74 frequency domain sub-signal, wherein the second information comprises energy transfer spectrums with preset decomposition layers.
S450, calculating the compaction uniformity of the roadbed according to the second information corresponding to each sub-road section and a first preset formula.
In this step, according to the first sub acceleration signal time-course curve and the second sub acceleration signal time-course curve information acquired by the first acceleration sensor 72 and the second acceleration sensor 71 on the vibratory roller, the vibration characteristics of the roadbed filling are indirectly measured by decomposing the information given to the acceleration sensors by the acceleration signals which are deeply excavated and fed back to the roadbed, and in this embodiment, the judgment of the roadbed filling uniformity is achieved by analyzing a plurality of energy change information carried by the acceleration signals. Meanwhile, the influence of the tool of the vibratory roller on the uniformity coefficient is not introduced in the step, so that the calculation error is effectively reduced.
Meanwhile, it should be noted that the decomposition algorithm adopted in step S410 is second-generation wavelet packet decomposition and the number of preset decomposition layers is 12, in the present application, a characteristic signal extraction technical effect is obtained by innovatively utilizing a second-generation wavelet packet decomposition acceleration time-course curve, and an energy transfer spectrum is separately calculated for each decomposition layer number, that is, an energy transfer spectrum is separately calculated for each characteristic signal, and a rolling uniformity state coefficient is obtained by calculating the energy transfer spectrum of each characteristic signal, so that an effect of making up a calculation gap in roadbed compaction uniformity is achieved. The second generation wavelet packet decomposition algorithm is the prior art, and the detailed process thereof is not described in the present application.
In some specific embodiments, in order to obtain the energy information carried in the time-course curves of the four second sub-acceleration signals in each rolling lane, step S431 and step S432 are included in step S430 in the present application.
And S431, performing combined calculation according to a second sub acceleration signal time course curve corresponding to the rolling lane to obtain an initial vibration wheel acceleration time course curve.
The specific calculation formula used in the step is as follows:
wherein the content of the first and second substances,
is an acceleration time-course curve of the initial vibration wheel,
is a time-course curve of the second sub-acceleration signal,
is a signal generated by an acceleration sensor arranged on a vibrating wheel of the vibrating press.
And S432, decomposing the second frequency domain signal through a second generation wavelet packet mathematical model to obtain a plurality of vibration wheel frequency domain sub-signals with preset decomposition layers, wherein the second frequency domain signal is a curve obtained by converting the acceleration time curve frequency domain of the initial vibration wheel.
Different acceleration sensing data acquisition errors can be averaged through the combined calculation of S431, and the accuracy of the final data is improved.
In some specific embodiments, step S440 includes step S441, step S442, and step S443.
And S441, calculating to obtain a cross-power spectrum according to the rack 74 frequency domain sub-signal corresponding to each decomposition layer and each vibration wheel frequency domain sub-signal.
And S442, calculating according to the vibration wheel frequency domain sub-signals corresponding to each decomposition layer to obtain a self-power spectrum.
And S443, respectively dividing the cross power spectrum and the self power spectrum corresponding to each decomposition layer, and then recording the squared value as an energy transfer spectrum.
It should be noted that the cross-power spectrum and the self-power spectrum calculation method mentioned in step S440 are common knowledge of those skilled in the art, and are not described in detail in this application.
According to the method, the energy transfer spectrum corresponding to the decomposition layers is calculated, the energy change condition in each decomposition layer is obtained, the energy change condition of each decomposition layer is calculated, the soil property condition change corresponding to each decomposition layer is obtained through analysis, and finally the roadbed compaction uniformity is obtained through subsequent calculation.
In some specific embodiments, step S450 includes step S451, step S452, and step S453.
And S451, extracting the peaks of the energy transfer spectrums corresponding to the layers one by one.
And S452, calculating to obtain a subentry coefficient according to a second preset formula and the preset number of layers of peak values.
Specifically, the second preset formula mentioned in this step is specifically as follows:
wherein the content of the first and second substances,
in order to obtain the coefficients of the components,
n is the number of decomposition layers for a peak of the energy transfer spectrum, i.e. n equals 12 in this embodiment.
And S453, calculating according to the subentry coefficient and a first preset formula to obtain the compaction uniformity.
Wherein the content of the first and second substances,
in order to achieve a uniform degree of compaction,
the energy transfer spectrum is a polynomial coefficient of an energy transfer spectrum corresponding to the number of decomposition layers, m is the product of a sub-road section and a rolling lane, namely the total number of the energy transfer spectrum, and a represents a roadbed code.
In some specific embodiments, the present embodiment further includes step S500 and step S600.
S500, second information is acquired, the second information comprises displacement signal time-course curves acquired by the displacement sensors 73, and the displacement sensors 73 are arranged on the frame 74 of the vibration press.
S600, correcting the compaction uniformity according to the displacement signal time course curve to obtain a corrected value, and updating the compaction uniformity to be the corrected value.
It is understood that, in the present embodiment, the second information may be obtained simultaneously with the first information, and may not be limited to the execution of S500, and the specific use order of S500 may be selected according to the actual needs of those skilled in the art.
Meanwhile, in the embodiment, the displacement signal of the frame 74 of the vibratory roller is used for judging the compaction uniformity of the roadbed, and the aim is that the falling displacement of the frame 74 directly shows the degree of roadbed rolling, so that the displacement signal is used for correcting the compaction uniformity to show the real compaction state of the roadbed.
In some specific embodiments, step S600 further includes step S610, step S620, and step S630, so as to achieve the purpose of calculating the correction value.
And S610, extracting a second sub-displacement signal time-course curve corresponding to each rolling lane according to the second information.
And S620, calculating to obtain a compaction uniformity correction coefficient according to each second sub-displacement signal time-course curve.
Specifically, the calculation formula used in this step is as follows:
wherein the content of the first and second substances,
in order to correct the coefficient for the uniformity of compaction,
the absolute value of the peak value of the second sub-displacement signal time-course curve is obtained by extracting the second sub-displacement signal time-course curve, m is the product of the sub-road section and the rolling lane, namely the total number of the second sub-displacement signal time-course curves, and a represents the roadbed code.
And S630, multiplying the compaction uniformity correction coefficient and the compaction uniformity to obtain a correction value.
Specifically, the calculation formula used in this step is as follows:
wherein E is a correction value, Ea is compaction uniformity, and Da is a compaction uniformity correction coefficient.
Wherein the above steps are only calculated to obtain a value for compaction uniformity, but the following criteria may be followed by one skilled in the art. And judging the compaction state of the roadbed.
The uniformity coefficient is 0.00-0.30, and the uniformity degree is quite discrete; the uniformity coefficient is 0.30-0.50, and the uniformity degree is relatively discrete; the uniformity coefficient is 0.50-0.80, and the uniformity degree is relatively uniform; the uniformity coefficient is 0.80-1.00, and the uniformity degree is very uniform.
According to the method, the evaluation efficiency of the uniformity of the compacted roadbed can be improved by the dynamic acquisition method according to the evaluation standard of the uniformity of the compacted roadbed.
The invention comprehensively uses the acceleration signal and the displacement signal for analysis, establishes a signal decomposition interval by the frequency domain characteristics, decomposes the signal into a plurality of sub-signals, calculates the signal energy distribution according to the characteristic sub-signals, and calculates the compaction uniformity state coefficient according to the energy combination formula, thereby reducing the one-sided influence on the subgrade compaction uniformity caused by only using the displacement signal, and the influence on the compaction uniformity caused by the change of the vehicle speed and the vibration frequency is not needed to be considered when the device is used.
Example 2:
as shown in fig. 3, the present embodiment provides a roadbed compaction uniformity calculation device, which includes:
the dividing unit 1 is used for dividing the roadbed into at least one sub-road section and dividing each sub-road section into at least one rolling lane.
And the sending unit 2 is used for sending a first control command, wherein the first control command comprises a command for controlling the vibratory roller to roll the road base for one time.
The first obtaining unit 3 is configured to obtain first information, where the first information includes a first acceleration signal time-course curve acquired by a first acceleration sensor 72 and a second acceleration signal time-course curve acquired by at least one second acceleration sensor 71, the first acceleration sensor 72 is disposed on a frame 74 of the vibration press, and each second acceleration sensor 71 is disposed on a vibration wheel of the vibration press.
And the first calculating unit 4 is used for performing energy distribution calculation according to the first information to obtain compaction uniformity.
In some specific embodiments, the first calculation unit 4 includes:
the first extracting unit 41 is configured to extract a first sub acceleration signal time-course curve corresponding to each rolling lane from the first acceleration signal time-course curves. And extracting a second sub acceleration signal time-course curve corresponding to each rolling lane from the second acceleration signal time-course curve.
The first decomposition unit 42 is configured to decompose the first frequency domain signal corresponding to each rolling lane, respectively, to obtain a plurality of rack 74 frequency domain sub-signals of a preset decomposition layer, where the first frequency domain signal is a curve obtained by frequency domain conversion of a time-course curve of the first sub-acceleration signal.
And the second decomposition unit 43 is configured to respectively decompose all second sub-acceleration signal time-course curves corresponding to each rolling lane in a combined manner, so as to obtain vibrating wheel frequency domain sub-signals with a preset decomposition layer number.
And the second calculating unit 44 is configured to calculate second information corresponding to each sub-road section according to the vibration wheel frequency domain sub-signal and the rack 74 frequency domain sub-signal corresponding to each sub-road section, where the second information includes energy transfer spectrums with preset decomposition levels.
And the third calculating unit 45 is used for calculating the compaction uniformity of the roadbed according to the second information corresponding to each sub-road section and the first preset formula.
In some specific embodiments, the second decomposition unit 43 includes:
and the combining unit 431 is used for combining and calculating to obtain an initial vibration wheel acceleration time curve according to a second sub acceleration signal time curve corresponding to one rolling lane.
And the third decomposition unit 432 is configured to decompose the second frequency domain signal through a second-generation wavelet packet mathematical model to obtain a plurality of vibration wheel frequency domain sub-signals of a preset decomposition layer, where the second frequency domain signal is a curve obtained by frequency domain conversion of an acceleration time-course curve of the initial vibration wheel.
In some specific embodiments, the second calculation unit 44 includes:
and a fourth calculating unit 441, configured to calculate a cross-power spectrum according to the rack 74 frequency-domain sub-signal and each vibration wheel frequency-domain sub-signal corresponding to each decomposition layer.
And a fifth calculating unit 442, configured to calculate a self-power spectrum according to the vibration wheel frequency-domain sub-signal corresponding to each decomposition layer.
A sixth calculating unit 443, configured to divide the cross power spectrum and the self power spectrum corresponding to each decomposition layer, and then mark the squared value as an energy transfer spectrum.
In some specific embodiments, the third calculation unit 45 includes:
a second extraction unit 451 for extracting the peaks of the energy transfer spectrum corresponding to each layer one by one.
And the seventh calculating unit 452 is configured to calculate a polynomial coefficient according to a second preset formula and a preset number of layers of peak values.
And an eighth calculating unit 453, configured to calculate the compaction uniformity according to the polynomial coefficient and the first preset formula.
In this embodiment, the method further includes:
and the second obtaining unit 5 is configured to obtain second information, where the second information includes a time curve of a displacement signal acquired by the displacement sensor 73, and the displacement sensors 73 are all disposed on the frame 74 of the vibration press.
And the correcting unit 6 is used for correcting the compaction uniformity according to the displacement signal time course curve to obtain a corrected value, and updating the compaction uniformity into the corrected value.
In some specific embodiments, the correction unit 6 includes:
and the third extraction unit 61 is configured to extract a second sub-displacement signal time-course curve corresponding to each rolling lane according to the second information.
And the coefficient calculating unit 62 is configured to calculate a compaction uniformity correction coefficient according to each second sub-displacement signal time-course curve.
And a ninth calculating unit 63 for multiplying the compaction uniformity correction coefficient by the compaction uniformity to obtain a correction value.
It should be noted that, regarding the apparatus in the above embodiment, the specific manner in which each module performs the operation has been described in detail in the embodiment related to the method, and will not be elaborated herein.
Example 3:
corresponding to the above method embodiment, the present embodiment further provides a roadbed compaction uniformity calculation apparatus, and a roadbed compaction uniformity calculation apparatus described below and a roadbed compaction uniformity calculation method described above may be referred to in correspondence with each other.
Fig. 4 is a block diagram illustrating a subgrade compaction uniformity calculation apparatus 800 in accordance with an exemplary embodiment. As shown in fig. 4, the subgrade compaction uniformity calculation apparatus 800 may include: a processor 801, a memory 802. The subgrade compaction uniformity computing device 800 may also include one or more of a multimedia component 803, an I/O interface 804, and a communications component 805.
The processor 801 is configured to control the overall operation of the roadbed compaction uniformity calculation apparatus 800 to complete all or part of the steps of the roadbed compaction uniformity calculation method. The memory 802 is used to store various types of data to support operation of the subgrade compaction uniformity calculation device 800, which may include, for example, instructions for any application or method operating on the subgrade compaction uniformity calculation device 800, as well as application-related data such as contact data, transceived messages, pictures, audio, video, and so forth. The Memory 802 may be implemented by any type of volatile or non-volatile Memory device or 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, magnetic disk or optical disk. The multimedia components 803 may include screen and audio components. Wherein the screen may be, for example, a touch screen and the audio component is used for outputting and/or inputting audio signals. For example, the audio component may include a microphone for receiving external audio signals. The received audio signal may further be stored in the memory 802 or transmitted through the communication component 805. The audio assembly 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, such as a keyboard, mouse, buttons, etc. These buttons may be virtual buttons or physical buttons. The communication component 805 is used for wired or wireless communication between the subgrade compaction uniformity 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, so that the corresponding communication component 805 may include: Wi-Fi module, bluetooth module, NFC module.
In an exemplary embodiment, the subgrade compaction uniformity calculation apparatus 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 for performing the subgrade compaction uniformity calculation method described above.
In another exemplary embodiment, a computer readable storage medium including program instructions which, when executed by a processor, implement the steps of the roadbed compaction uniformity calculation method described above is also provided. For example, the computer readable storage medium may be the memory 802 described above including program instructions that are executable by the processor 801 of the subgrade compaction uniformity calculation apparatus 800 to perform the subgrade compaction uniformity calculation method described above.
Example 4:
corresponding to the above method embodiment, a readable storage medium is also provided in this embodiment, and a readable storage medium described below and a roadbed compaction uniformity calculation method described above may be referred to with each other.
A readable storage medium, on which a computer program is stored, the computer program, when executed by a processor, implementing the steps of the roadbed compaction uniformity calculation method according to the above-mentioned method embodiment.
The readable storage medium may be a usb disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and various other readable storage media capable of storing program codes.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (8)
1. A roadbed compaction uniformity calculation method is characterized by comprising the following steps:
dividing a roadbed into at least one section of sub-road section, and dividing each sub-road section into at least one rolling lane;
sending a first control command, wherein the first control command comprises a command for controlling a vibratory roller to roll the roadbed for one time;
acquiring first information, wherein the first information comprises a first acceleration signal time-course curve acquired by a first acceleration sensor and a second acceleration signal time-course curve acquired by at least one second acceleration sensor, the first acceleration sensor is arranged on a frame of a vibration press machine, and each second acceleration sensor is arranged on a vibration wheel of the vibration press machine;
performing energy distribution calculation according to the first information to obtain compaction uniformity;
wherein, the calculating the energy distribution according to the first information to obtain the compaction uniformity comprises:
extracting a first sub acceleration signal time-course curve corresponding to each rolling lane from a first acceleration signal time-course curve; extracting a second sub acceleration signal time-course curve corresponding to each rolling lane from a second acceleration signal time-course curve;
respectively decomposing a first frequency domain signal corresponding to each rolling lane to obtain a preset number of decomposed layer frame frequency domain sub-signals, wherein the first frequency domain signal is a curve obtained by converting a time curve and a frequency curve of a first sub-acceleration signal;
respectively carrying out combined decomposition on time-course curves of all the second sub-acceleration signals corresponding to each rolling lane to obtain vibration wheel frequency domain sub-signals with the preset decomposition layers;
calculating to obtain second information corresponding to each sub-road section according to the vibration wheel frequency domain sub-signal and the rack frequency domain sub-signal corresponding to each sub-road section, wherein the second information comprises energy transfer spectrums with preset decomposition layers;
and calculating the compaction uniformity of the roadbed according to the second information corresponding to each sub-road section and a first preset formula.
2. The roadbed compaction uniformity calculation method according to claim 1, wherein the energy distribution calculation is performed according to the first information to obtain compaction uniformity, and then the method comprises:
acquiring second information, wherein the second information comprises a displacement signal time-course curve acquired by a displacement sensor 73, and the displacement sensors 73 are all arranged on a frame of the vibration press;
and correcting the compaction uniformity according to the displacement signal time course curve to obtain a corrected value, and updating the compaction uniformity into the corrected value.
3. The method of calculating subgrade compaction uniformity according to claim 2, wherein said modifying said compaction uniformity according to said displacement signal time course curve to obtain a modified value comprises:
extracting a second sub-displacement signal time-course curve corresponding to each rolling lane according to second information;
calculating to obtain a compaction uniformity correction coefficient according to each second sub-displacement signal time-course curve;
and multiplying the compaction uniformity correction coefficient and the compaction uniformity to obtain the correction value.
4. A subgrade compaction uniformity calculation apparatus comprising:
the dividing unit is used for dividing the roadbed into at least one sub-road section and dividing each sub-road section into at least one rolling lane;
the device comprises a sending unit, a judging unit and a control unit, wherein the sending unit is used for sending a first control command, and the first control command comprises a command for controlling the vibratory roller to roll the roadbed for one time;
the first acquisition unit is used for acquiring first information, the first information comprises a first acceleration signal time-course curve acquired by a first acceleration sensor and a second acceleration signal time-course curve acquired by at least one second acceleration sensor, the first acceleration sensor is arranged on a frame of the vibration press machine, and each second acceleration sensor is arranged on a vibration wheel of the vibration press machine;
the first calculating unit is used for carrying out energy distribution calculation according to the first information to obtain compaction uniformity;
wherein the first calculation unit includes:
the first extraction unit is used for extracting a first sub acceleration signal time-course curve corresponding to each rolling lane from a first acceleration signal time-course curve; extracting a second sub acceleration signal time-course curve corresponding to each rolling lane from a second acceleration signal time-course curve;
the first decomposition unit is used for decomposing a first frequency domain signal corresponding to each rolling lane respectively to obtain a preset decomposition layer number of frame frequency domain sub-signals, and the first frequency domain signal is a curve obtained by converting a time course curve frequency domain of a first sub-acceleration signal;
the second decomposition unit is used for respectively and compositely decomposing all the second sub-acceleration signal time-course curves corresponding to each rolling lane to obtain vibrating wheel frequency domain sub-signals with the preset decomposition layers;
the second calculating unit is used for calculating to obtain second information corresponding to each sub-road section according to the vibration wheel frequency domain sub-signal and the rack frequency domain sub-signal corresponding to each sub-road section, wherein the second information comprises energy transfer spectrums with preset decomposition layers;
and the third calculating unit is used for calculating the compaction uniformity of the roadbed according to the second information corresponding to each sub-road section and the first preset formula.
5. The subgrade compaction uniformity calculation device of claim 4, further comprising:
the second obtaining unit is used for obtaining second information, the second information comprises displacement signal time-course curves acquired by displacement sensors 73, and the displacement sensors 73 are arranged on a frame of the vibration press;
and the correction unit is used for correcting the compaction uniformity according to the displacement signal time course curve to obtain a corrected value, and updating the compaction uniformity into the corrected value.
6. The roadbed compaction uniformity calculation device of claim 5, wherein the correction unit comprises:
the third extraction unit is used for extracting a second sub-displacement signal time-course curve corresponding to each rolling lane according to the second information;
the coefficient calculation unit is used for calculating a compaction uniformity correction coefficient according to each second sub-displacement signal time-course curve;
and the ninth calculation unit is used for multiplying the compaction uniformity correction coefficient and the compaction uniformity to obtain the correction value.
7. A subgrade compaction uniformity calculation apparatus comprising:
a memory for storing a computer program;
a processor for implementing the steps of the roadbed compaction uniformity calculation method according to any one of claims 1 to 3 when the computer program is executed.
8. A readable storage medium, characterized by: the readable storage medium having stored thereon a computer program which, when executed by a processor, carries out the steps of the subgrade compaction uniformity calculation method according to any one of claims 1 to 3.
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| CN104562899A (en) * | 2014-12-19 | 2015-04-29 | 中国铁道科学研究院铁道建筑研究所 | Measuring system and measuring method for continuous compaction |
| CN105002810B (en) * | 2015-06-01 | 2017-03-15 | 清华大学 | A kind of intelligence rolls robot |
| CN105628518A (en) * | 2015-12-30 | 2016-06-01 | 哈尔滨工业大学 | Method for detecting and evaluating compaction uniformity of inorganic stabilized granular base course of road |
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| CN108130849A (en) * | 2018-02-22 | 2018-06-08 | 长安大学 | Roadbed Continuous compacting with warning function measures monitoring system and method in real time |
| CN111444560B (en) * | 2020-02-29 | 2024-04-16 | 天津大学 | High-filling compaction quality real-time evaluation method considering influence of underlying surface |
| CN111397991A (en) * | 2020-05-13 | 2020-07-10 | 长安大学 | Vibration compaction method for measuring maximum dry density and optimum water content of roadbed filler |
| CN112561903B (en) * | 2020-12-24 | 2022-03-01 | 中铁建设集团基础设施建设有限公司 | Temperature shrinkage crack resistance method suitable for asphalt pavement in cold region |
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| CN113174918B (en) * | 2021-04-14 | 2022-07-15 | 中交四航工程研究院有限公司 | Method for detecting transverse compaction degree and uniformity of roadbed |
| CN112942294B (en) * | 2021-05-13 | 2021-08-31 | 西南交通大学 | Roadbed uniformity detection method, device and equipment and readable storage medium |
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