CN117988195A - Intelligent paving large-thickness water stabilization construction system and method - Google Patents
Intelligent paving large-thickness water stabilization construction system and method Download PDFInfo
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Abstract
The invention discloses an intelligent paving large-thickness water stabilization construction system and method, which relate to the field of road construction and comprise a modeling module, a first prism, a first total station, an angle sensor, a transverse slope sensor, a first control module, a second control module and the like, wherein the modeling module and the first prism are fixed on the top of a paver. The invention provides an intelligent paving large-thickness water stabilization construction system and method, which aim to solve the problems of low water stabilization paving construction efficiency, high labor intensity and the like in the prior art, and achieve the purposes of improving the intelligent and automatic degree of pavement construction and improving the construction efficiency.
Description
Technical Field
The invention relates to the field of road construction, in particular to an intelligent paving large-thickness water stabilization construction system and method.
Background
The water-stable fully-called cement-stable broken stone is a mixture obtained by mixing broken stone, cement and water, compacting and preserving. The water stability has good plate body property, the water stability and the freezing resistance are better than those of lime stabilized soil, the strength is mainly formed by embedding between broken stones, meanwhile, the mortar has enough mortar volume to fill gaps of aggregate, the initial strength is high, the strength is increased along with the curing time, and the mortar can be quickly bonded into a plate body, so that the mortar has higher strength and impermeability. According to the rules of construction technology of road pavement base layer (JTG/T F-2015) of the Ministry of transportation, cement stabilized macadam belongs to medium-grained soil, and because cement and other cementing materials are contained in water stabilization, the whole construction process is required to be completed before the cement is finally set, and the quality standard is reached once, otherwise, the construction process is not easy to repair, so that the construction organization design and the plan treatment are required to be enhanced in the construction.
The conventional water stabilization paving construction has the technical defects that the design thickness of a structural layer is generally 18-20cm, and for the large-thickness water stabilization construction with the paving thickness of more than 20cm, the conventional paving process has the following technical defects: (1) The steel piles are required to be arranged at the position 50cm outside the construction side line, and then the complicated work such as measuring and setting out, pile adjustment, line hanging, retesting and the like is carried out; the construction efficiency is low, the workload of measuring staff is high, the labor intensity is high, and the construction quality is greatly influenced by human factors; (2) The construction at night is difficult, if the construction at night is forced due to the requirement of construction period, high-power illumination facilities are matched, so that the measurement difficulty is increased, the measurement accuracy is low, and the measurement error is large; (3) The traditional pavement paving construction period management is mainly controlled by prolonging the time, and the construction period guarantee measures are limited; (4) The traditional road surface paving adopts a wire hanging process, which is easy to cause the operator to catch feet in the construction process, so that the personal safety of the constructor is threatened; (5) In the prior art, a technology of positioning and guiding a paver by adopting satellite navigation signals is also available, but in the mountain highway construction environment, satellite signals are weak and the phenomenon of 'disconnection' possibly occurs, so that measurement data cannot be transmitted in time.
Disclosure of Invention
The invention provides an intelligent paving large-thickness water stabilization construction system and method, which aim to solve the problems of low water stabilization paving construction efficiency, high labor intensity and the like in the prior art, and achieve the purposes of improving the intelligent and automatic degree of pavement construction and improving the construction efficiency.
The invention is realized by the following technical scheme:
Intelligent paving large-thickness water stabilization construction system comprises:
The modeling module is used for building a water stable 3D model of a road section to be paved, wherein the water stable 3D model comprises space coordinates, design elevation and design angles of each point;
the first prism is fixed at the top of the paver;
The first total station is used for monitoring the azimuth and the space coordinate of the first prism in real time;
the angle sensor is used for monitoring the angle of the large arm of the paver in real time;
The transverse slope sensor is used for monitoring the transverse slope of the screed of the paver in real time;
The first control module is in signal connection with the first total station and the angle sensor, and is used for comparing the azimuth, the space coordinate and the large arm angle which are monitored in real time with the design value in the water-stable 3D model, controlling the large arm angle of the paver and adjusting the single-point paving elevation based on the comparison result;
And the second control module is in signal connection with the transverse slope sensor and is used for comparing the real-time monitored screed angle with the design value in the water-stable 3D model, controlling the screed transverse slope of the paver and adjusting the paving angle based on the comparison result.
Aiming at the technical problems of low water stabilization paving construction efficiency and high labor intensity in the prior art, the invention firstly provides an intelligent paving large-thickness water stabilization construction system, and the system establishes a water stabilization 3D model of a road section to be paved through a modeling module, so that the water stabilization 3D model comprises information of space coordinates, design elevation and design angles of points in the road section to be paved, wherein the design angles are designed slope angles as will be understood by those skilled in the art. The first prism is used for being matched with the first total station, so that the first prism is always fixed at the top of the paver, after the azimuth and the space coordinate of the first prism are obtained through the first total station, the advancing direction of the paver can be determined through the azimuth of the first prism, the current position of the paver can be obtained through the space coordinate of the first prism, and the elevation information of the current paving point is obtained.
After the first control module obtains the monitoring signal of the first total station, the first control module can: judging whether the advancing direction of the paver meets the extending direction in the water-stable 3D model, if not, prompting or directly controlling the direction of the paver; judging whether the error of the elevation of the current paving point and the water stable 3D model is within the design allowable range, if not, controlling the angle of the large arm of the paver to be adjusted until the error of the elevation of the current paving point and the water stable 3D model is within the design allowable range, and further realizing the function of adjusting the single-point paving elevation.
The second control module obtains a monitoring signal of the transverse slope sensor, compares the angle of the screed monitored in real time by the transverse slope sensor with a design value of the transverse slope angle of the current paving point in the water-stable 3D model, and controls the transverse slope of the screed of the paver based on a comparison result, so that the function of adjusting the paving angle is realized.
Compared with the prior art, the system omits a series of complicated preparation works such as lofting, drilling steel drills, pile adjusting, line hanging, retesting and the like in the traditional process, improves the intelligent and automatic degree of pavement construction, and reduces the operation danger of constructors; the method has the advantages that the guiding and the control of the working process of the paver are realized based on a numerical modeling technology, the defects that the traditional technology is inconvenient for construction at night, depends on satellite signals and the like are overcome, the accuracy and the continuity of water stable paving under the working conditions of construction at night and the satellite signals in mountain areas are fully ensured, the requirements on the working environment are reduced, and the continuous construction operation of expressway subgrade in mountain areas such as the west is more satisfied; in addition, the system meets the condition of continuous construction in the daytime and at night and realizes the required control based on local modeling, so that the system is more beneficial to improving the controllability of the construction period and ensuring the stability of the construction period compared with the prior art.
Further, the angle sensor is arranged on a large arm of the paver; the transverse slope sensor is arranged between two screed plates of the paver and is contacted with the two screed plates.
In the scheme, the angle sensor can determine the whole height of the screed of the paver by measuring the angle of the large arm of the paver, so that the single-point paving elevation can be accurately controlled. Because the screed of the paver is not an integral body but consists of two screeds, in order to ensure better monitoring of the screed transverse gradient of the paver, a transverse slope sensor is arranged between and in contact with both screeds, thereby more accurately monitoring the integral angle of the screeds.
According to the scheme, the angle sensor and the transverse slope sensor are used for monitoring in real time, and the measuring error of the first total station can be compensated and trimmed due to mechanical vibration and other reasons in the construction process, so that the construction accuracy is controlled in a smaller range.
Further, the system further comprises:
the first moving rod is provided with a second prism at the top and is used for moving along with the paver on a road surface on which paving operation is performed behind the paver;
the second total station is used for monitoring the space coordinates of the second prism;
and the mobile terminal is in signal connection with the second total station and is used for receiving and displaying the monitoring result of the second total station, comparing the monitoring result of the second total station with the design value in the water-stable 3D model, displaying the comparison result and rechecking the paving quality.
According to the scheme, through the first movable rod, the second total station and the mobile terminal, the elevation of the top surface and the transverse gradient of the road surface can be checked on the working surface after the paving is finished in time, so that whether the operation of the system is normal or not is checked. Specifically, the second prism is fixed at the top end of the first movable rod, so that the first movable rod moves along with the paver on a road surface on which paving operation is performed behind the paver, the space coordinates of the second prism are monitored through the second total station and sent to the mobile terminal, the mobile terminal receives and displays the monitoring result of the second total station, and the mobile terminal also compares the monitoring result of the second total station with a design value in the water-stable 3D model and displays the comparison result so as to review the paving quality.
Compared with the prior art, which needs to check the paving quality in a centralized way after the paving operation is completed, the scheme can perform real-time online check in the paving operation process, is beneficial to the staff to quickly master the paving quality and can finish the road section with poor obvious quality as soon as possible.
Further, the system further comprises:
The top of the second movable rod is fixed with a third prism which is used for keeping the same transverse position with the first prism and synchronously moving with the paver;
the second total station monitors the space coordinates of the third prism in real time and sends the space coordinates to the second control module;
The second control module is also connected with the first total station through signals, and the second control module is also connected with the space coordinate of the third prism and the space coordinate of the first prism to obtain actual transverse slope data, and corrects the transverse slope of the screed of the paver based on the actual transverse slope data.
In the scheme, in the paving operation process, a second moving rod with a third prism fixed at the top part and the first prism are kept at the same transverse position and synchronously move with the paver, and the space coordinates of the third prism are monitored in real time through a second total station and sent to a second control module; the second control module is used for connecting the space coordinate of the third prism with the space coordinate of the first prism in real time, so that the actual transverse slope data can be obtained through two transverse two-point elevation data, and the transverse slope of the screed of the paver is corrected based on the actual transverse slope data and the monitoring signal of the transverse slope sensor.
It can be seen that the actual transverse slope data can be obtained through actual measurement, and the monitoring signal of the transverse slope sensor is corrected, so that the measurement error of the transverse slope sensor caused by the vibration of the paver is overcome, and the accuracy of real-time feedback of the application is further improved. Wherein, it should be understood by those skilled in the art that the second movable rod and the first prism keep the same lateral position, that is, the second movable rod and the first prism are on the same straight line perpendicular to the axial direction of the road; namely, the measuring position of the first prism is regarded as a single measuring point, a perpendicular line perpendicular to the axial direction of the road is made through the measuring point, and the measuring position of the third prism is located on the perpendicular line.
The water stabilization construction method based on the intelligent paving large-thickness water stabilization construction system comprises the following steps:
establishing a water stable 3D model of a road section to be paved through a modeling module, and inputting the model into a first control module and a second control module;
pairing the first total station with a first prism;
Starting the paver to start paving operation, wherein in the paving operation process: the first total station always tracks and monitors the azimuth and the space coordinate of the first prism; the first control module receives monitoring signals of the first total station and the angle sensor in real time, compares the monitored azimuth, the monitored space coordinate and the monitored large arm angle with design values in the water-stable 3D model, and controls the large arm angle of the paver and adjusts single-point paving elevation based on comparison results; the second control module receives monitoring signals of the transverse slope sensor in real time, compares the monitored screed angle with a design value in the water-stable 3D model, and controls the screed transverse slope of the paver and adjusts the paving angle based on a comparison result;
rolling the water stable base layer after finishing paving;
and (5) maintaining the water-stable base layer.
In a specific control process, it is preferable to follow the design value in making the actual measurement data as close to the water stable 3D model as possible, for example: if the elevation of the first prism is monitored to be lower than the design value in the water-stable 3D model, the angle of the large arm of the paver is monitored; if the elevation of the first prism is monitored to be lower than the design value in the water-stable 3D model, reducing the angle of the large arm of the paver; if the angle of the transverse slope sensor is monitored to be smaller than the design value in the water-stable 3D model, increasing the transverse slope of the screed; and if the angle of the lateral slope sensor is monitored to be larger than the design value in the water-stable 3D model, reducing the lateral slope of the screed.
Further, in the paving process, a second moving rod with a third prism fixed at the top is kept at the same transverse position with the first prism and moves synchronously with the paver, and the space coordinates of the third prism are monitored in real time through a second total station and sent to a second control module;
The second control module is used for connecting the space coordinates of the third prism and the space coordinates of the first prism in real time to obtain actual transverse slope data;
And correcting the transverse slope of the screed of the paver based on the actual transverse slope data and the monitoring signals of the transverse slope sensor. The specific correction method comprises the following steps:
Defining actual lateral slope data as a first slope and a monitoring signal of a lateral slope sensor as a second slope;
Judging whether the error of the first gradient and the second gradient is smaller than a set threshold value:
if yes, controlling the horizontal gradient of the screed of the paver to enable the second gradient to be in a designated range of the designed horizontal gradient in the water-stable 3D model;
If not, taking an average value of the first gradient and the second gradient, and controlling the horizontal gradient of the screed of the paver to enable the average value to be in a designated range of the designed horizontal gradient in the water-stable 3D model.
The scheme compares actual landslide data with monitoring signals of a landslide sensor: if the error between the two is in the range of the set threshold value, the monitoring signal of the transverse slope sensor is considered to be less and relatively accurate to be interfered by external vibration and the like, and the monitoring signal of the transverse slope sensor can be used as the transverse slope angle at the moment, and the monitoring signal of the transverse slope sensor is only required to be ensured to be in the appointed range of the designed transverse slope in the water-stable 3D model; if the error between the two is beyond the set threshold range, the monitoring signal of the transverse slope sensor is considered to be greatly interfered by external vibration and the like, the accuracy is low, at the moment, the average value of the first gradient and the second gradient is used as the actually measured transverse slope angle, and the average value is controlled to be in the appointed range of the designed transverse gradient in the water-stable 3D model.
It can be seen that the monitoring signal of the transverse slope sensor can be corrected and rechecked in real time through the second movable rod, and the control precision can be remarkably improved.
Further, in the paving process, the first moving rod with the second prism fixed at the top moves along with the paver on the road surface with the paving operation behind the paver, and the space coordinates of the second prism are monitored regularly or at equal intervals through a second total station and sent to the mobile terminal;
the mobile terminal obtains the elevation information of the position of the first mobile rod based on the space coordinate of the second prism, compares the elevation information with the design elevation in the water-stable 3D model, and outputs and displays the comparison result;
and trimming the road sections with unqualified comparison results.
The scheme can carry out real-time online recheck in the paving operation process, is beneficial to a worker to quickly master the paving quality and can finish a road section with poor obvious quality as soon as possible.
Further, the method for correcting the road section with the unqualified comparison result comprises the following steps: removing the water-stable mixture in the unqualified road section by using a loader; the removed portion is manually filled and trimmed.
Further, the method for rolling the water stabilization base layer after finishing paving comprises the following steps:
using a double-steel-wheel road roller, advancing for static pressure once, retreating for strong vibration and compacting once;
Re-pressing the roller with a single steel wheel for one time, and re-pressing the roller with a rubber wheel for one time;
checking whether the surface of the water-stable base layer is locally isolated or not, if so, manually sprinkling water-stable fine materials, and rolling the manually sprinkling area by using a rubber-tire road roller;
And (5) carrying out final surface rolling operation by using a double-steel-wheel road roller.
In the conventional thickness water-stable rolling process, a single steel wheel road roller is generally used for carrying out re-rolling, and after the compactness meets the requirement, a final rolling surface is carried out by the rubber wheel road roller; the applicant found during the research that the use of such conventional rolling processes resulted in rigid segregation of the surface of the water-stable layer during high thickness paving operations.
The rolling process adopts the process of steel and rubber cross rolling, firstly, the double-steel-wheel road roller is used for rolling repeatedly, then the single-steel-wheel road roller and the rubber-wheel road roller are used for re-rolling, finally, the double-steel-wheel road roller is used for final-rolling surface collecting operation, and the site operation verifies that the rigid segregation phenomenon at the top of the water-stable structural layer can be effectively inhibited.
Compared with the prior art, the invention has the following advantages and beneficial effects:
1. The intelligent paving large-thickness water stabilization construction system and method of the invention omits a series of complicated preparation works such as lofting, steel drilling, pile adjusting, line hanging, retesting and the like in the traditional process, improves the intelligent and automatic degree of pavement construction, and reduces the operation danger of constructors.
2. The intelligent spreading large-thickness water stabilization construction system and method provided by the invention realize the guidance and control of the working process of the spreader based on a numerical modeling technology, overcome the defects that the traditional technology is inconvenient for construction at night, depends on satellite signals and the like, fully ensure the water stabilization spreading accuracy and continuity under the working condition that the construction at night and the satellite signals of mountain areas are weaker, reduce the requirements on the working environment and more satisfy the continuous construction operation of expressway roadbeds like western mountain areas.
3. The intelligent pavement large-thickness water stabilization construction system and method are more beneficial to improving the controllability of the construction period and ensuring the stability of the construction period.
4. The intelligent paving large-thickness water-stable construction system and the intelligent paving large-thickness water-stable construction method can compensate and repair the measurement error of the first total station due to mechanical vibration and the like in the construction process, so that the construction precision is controlled in a smaller range; the elevation of the top surface and the transverse gradient of the road surface can be checked in time on the working surface after the paving is finished through the first movable rod, the second total station and the mobile terminal, so that whether the operation of the system is normal or not is checked; the monitoring signal of the transverse slope sensor is corrected and rechecked in real time through the second movable rod, so that the control precision can be remarkably improved.
5. According to the intelligent paving large-thickness water stabilization construction system and method, actual transverse slope data can be obtained through actual measurement, and the monitoring signal of the transverse slope sensor is corrected, so that the measurement error of the transverse slope sensor caused by the vibration of a paver and the like is overcome, and the accuracy of real-time feedback of the intelligent paving large-thickness water stabilization construction system is further improved.
6. According to the intelligent pavement large-thickness water stabilization construction system and method, the adopted rolling process can inhibit the rigid segregation phenomenon at the top of the water stabilization structural layer during large-thickness paving operation.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a schematic diagram of a system according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart of an embodiment of the present invention;
FIG. 3 is a schematic view of a sensor for a lateral slope in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural view of a second C-shaped fastener according to an embodiment of the present invention.
In the drawings, the reference numerals and corresponding part names:
the device comprises a 1-screed plate, a 2-first C-shaped fastener, a 3-pull rod, a 4-bearing platform, a 5-transverse slope sensor, a 6-second C-shaped fastener, a 7-hoop and an 8-cross rod.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application. In the description of the present application, it should be understood that the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of the present application.
Example 1:
the intelligent paving large-thickness water stabilization construction system shown in fig. 1 comprises:
The modeling module is used for building a water stable 3D model of a road section to be paved, wherein the water stable 3D model comprises space coordinates, design elevation and design angles of each point;
the first prism is fixed at the top of the paver;
The first total station is used for monitoring the azimuth and the space coordinate of the first prism in real time;
The angle sensor is arranged on the large arm of the paver and used for monitoring the angle of the large arm of the paver in real time;
The transverse slope sensor is arranged between and in contact with two screed plates of the paver and is used for monitoring transverse slope of the screed plates of the paver in real time;
The first control module is in signal connection with the first total station and the angle sensor, and is used for comparing the azimuth, the space coordinate and the large arm angle which are monitored in real time with the design value in the water-stable 3D model, controlling the large arm angle of the paver and adjusting the single-point paving elevation based on the comparison result;
And the second control module is in signal connection with the transverse slope sensor and is used for comparing the real-time monitored screed angle with the design value in the water-stable 3D model, controlling the screed transverse slope of the paver and adjusting the paving angle based on the comparison result.
The first moving rod is provided with a second prism at the top and is used for moving along with the paver on a road surface on which paving operation is performed behind the paver;
the second total station is used for monitoring the space coordinates of the second prism;
and the mobile terminal is in signal connection with the second total station and is used for receiving and displaying the monitoring result of the second total station, comparing the monitoring result of the second total station with the design value in the water-stable 3D model, displaying the comparison result and rechecking the paving quality.
The top of the second movable rod is fixed with a third prism which is used for keeping the same transverse position with the first prism and synchronously moving with the paver;
the second total station monitors the space coordinates of the third prism in real time and sends the space coordinates to the second control module;
The second control module is also connected with the first total station through signals, and the second control module is also connected with the space coordinate of the third prism and the space coordinate of the first prism to obtain actual transverse slope data, and corrects the transverse slope of the screed of the paver based on the actual transverse slope data.
The modeling module in the embodiment is realized based on Trimble Businss Center software, the design wire elements are input through an intersection method, and then the measurement data of the whole line are established into a 3D model through the input of data such as a flat curve, a vertical curve, an ultrahigh and the like. And finally checking whether the model has errors through data such as transverse slopes, central plane coordinates, longitudinal section elevations and the like.
In the embodiment, the first control module and the second control module are both arranged at the sides of the crawling ladder of the upper and lower pavers, so that the operation of personnel is facilitated.
Example 2:
An intelligent paving large-thickness water stabilization construction method, as shown in figure 2, comprises the following steps:
S1, establishing a water stable 3D model of a road section to be paved through a modeling module, and inputting the water stable 3D model into a first control module and a second control module;
s2, pairing the first total station with a first prism;
S3, starting the paver to start paving operation, and controlling the advancing direction of the paver according to the water-stable 3D model; if a display screen is arranged in the cab of the paver, the current directions of the water-stable 3D model and the paver are displayed on the screen, and a driver can manually control the advancing direction of the paver to be consistent with the extending direction of the water-stable 3D model;
S4, rolling the water stabilization base layer after finishing paving;
S5, maintaining the water-stable base layer.
During paving operations:
S301, a first total station always tracks and monitors the azimuth and the space coordinate of a first prism; the first control module receives monitoring signals of the first total station and the angle sensor in real time, compares the monitored azimuth, the monitored space coordinate and the monitored large arm angle with design values in the water-stable 3D model, and controls the large arm angle of the paver and adjusts single-point paving elevation based on comparison results; the second control module receives monitoring signals of the transverse slope sensor in real time, compares the monitored screed angle with a design value in the water-stable 3D model, and controls the screed transverse slope of the paver and adjusts the paving angle based on the comparison result
S302, a second movable rod with a third prism fixed at the top is kept at the same transverse position with the first prism and moves synchronously with the paver, and the space coordinates of the third prism are monitored in real time through a second total station and sent to a second control module;
The second control module is used for connecting the space coordinates of the third prism and the space coordinates of the first prism in real time to obtain actual transverse slope data;
Correcting the screed transverse gradient of the paver based on actual transverse slope data and monitoring signals of transverse slope sensors:
Defining actual lateral slope data as a first slope and a monitoring signal of a lateral slope sensor as a second slope;
Judging whether the error of the first gradient and the second gradient is smaller than a set threshold value:
if yes, controlling the horizontal gradient of the screed of the paver to enable the second gradient to be in a designated range of the designed horizontal gradient in the water-stable 3D model;
If not, taking an average value of the first gradient and the second gradient, and controlling the horizontal gradient of the screed of the paver to enable the average value to be in a designated range of the designed horizontal gradient in the water-stable 3D model.
S303, a first movable rod with a second prism fixed at the top moves along with the paver on a road surface on which paving operation is performed behind the paver, and the space coordinates of the second prism are monitored regularly or at equal intervals through a second total station and sent to a mobile terminal;
the mobile terminal obtains the elevation information of the position of the first mobile rod based on the space coordinate of the second prism, compares the elevation information with the design elevation in the water-stable 3D model, and outputs and displays the comparison result;
Trimming road sections with unqualified comparison results: removing the water-stable mixture in the unqualified road section by using a loader; the removed portion is manually filled and trimmed.
In the embodiment, the first total station is always positioned in the range of 500m in front of the paver; the second total station, the first moving rod and the second moving rod are all in the range of 500 m.
In a more preferred embodiment, the method of rolling the hydraulically stabilized base after paving is complete comprises:
s401, using a double-steel-wheel road roller, advancing for one time by static pressure, retreating for one time by strong vibration compaction;
s402, re-pressing the single steel wheel road roller for one time, and re-pressing the rubber wheel road roller for one time;
S403, checking whether the surface of the water stabilization base layer is locally isolated, if so, manually sprinkling water stabilization fine materials, and rolling the manually sprinkling area by using a rubber-wheel road roller;
S404, performing final surface rolling operation by using the double-steel-wheel road roller.
In this embodiment, the second total station monitors the spatial coordinates of the third prism in real time, and monitors the spatial coordinates of the second prism when needed.
Taking the construction of a part of highway section of a Sichuan basin as an example:
the thickness of the expressway subbase layer and the base layer structure layer is 28cm, and the expressway subbase layer and the base layer structure layer belong to large-thickness water stability.
The traditional paving process is adopted, the paving can be completed in 3 times, the construction period of 11 months is estimated, and the total cost is 1097 ten thousand yuan.
By adopting the intelligent paving large-thickness water stabilization construction method of the embodiment, the construction operation is completed only by 2 times of paving in 9 months, and the generated mechanical cost and the management cost are totally 810 ten thousand yuan; the construction cost can be saved by about 287 ten thousand yuan.
Example 3:
On the basis of any one of the above embodiments, the installation mode of the transverse slope sensor is as shown in fig. 3, the paver is provided with two screed plates 1, the two screed plates 1 are respectively connected with a first C-shaped fastener 2, the first C-shaped fastener 2 is provided with a through hole, and the two first C-shaped fasteners 2 are connected through a plurality of pull rods 3 penetrating through the through holes; a bearing platform 4 is arranged on the pull rod 3 between the two first C-shaped fasteners 2, and a transverse slope sensor 5 is arranged on the bearing platform 4.
Preferably, the shape of the first C-shaped fastener 2 matches the shape of the top of the screed plate 1, so that the first C-shaped fastener 2 can be just fastened to the screed plate 1, and the first C-shaped fastener 2 is fixed to the screed plate 1 by spot welding.
Preferably, the pull rod 3 can be connected with the two first C-shaped fasteners 2 in a counter-pulling way by adopting an external thread mode.
The scheme can fully ensure the integral monitoring of the transverse slope angle of the screed of the paver, and ensure that the transverse slope sensor can have a more accurate and stable monitoring effect.
Example 4:
on the basis of any one of the above embodiments, the second moving rod is connected through a second C-shaped fastener 6, the second C-shaped fastener 6 is shown in fig. 4, two ends of the C-shape are distributed up and down, and two ends of the C-shape are respectively provided with a hoop 7, and the second C-shaped fastener 6 is fixedly connected with a cross rod 8; when in use, the cross rod 8 is connected to the frame or other positions of the paver through any existing connection mode, so that the cross rod 8 faces the first prism, and the long axis direction of the cross rod 8 is perpendicular to the advancing direction of the paver; and then the second movable rod is held by the two anchor ears 7.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the invention, and is not meant to limit the scope of the invention, but to limit the invention to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the invention are intended to be included within the scope of the invention.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. In addition, the term "coupled" as used herein may be directly coupled or indirectly coupled via other components, unless otherwise indicated.
Claims (10)
1. Intelligent paving large-thickness water stabilization construction system, which is characterized by comprising:
The modeling module is used for building a water stable 3D model of a road section to be paved, wherein the water stable 3D model comprises space coordinates, design elevation and design angles of each point;
the first prism is fixed at the top of the paver;
The first total station is used for monitoring the azimuth and the space coordinate of the first prism in real time;
the angle sensor is used for monitoring the angle of the large arm of the paver in real time;
The transverse slope sensor is used for monitoring the transverse slope of the screed of the paver in real time;
The first control module is in signal connection with the first total station and the angle sensor, and is used for comparing the azimuth, the space coordinate and the large arm angle which are monitored in real time with the design value in the water-stable 3D model, controlling the large arm angle of the paver and adjusting the single-point paving elevation based on the comparison result;
And the second control module is in signal connection with the transverse slope sensor and is used for comparing the real-time monitored screed angle with the design value in the water-stable 3D model, controlling the screed transverse slope of the paver and adjusting the paving angle based on the comparison result.
2. The intelligent paving thicknesswise water stabilization construction system of claim 1, wherein the angle sensor is mounted on a paver boom; the transverse slope sensor is arranged between two screed plates of the paver and is contacted with the two screed plates.
3. The intelligent paving thicknesswise water stabilization construction system of claim 1, further comprising:
the first moving rod is provided with a second prism at the top and is used for moving along with the paver on a road surface on which paving operation is performed behind the paver;
the second total station is used for monitoring the space coordinates of the second prism;
and the mobile terminal is in signal connection with the second total station and is used for receiving and displaying the monitoring result of the second total station, comparing the monitoring result of the second total station with the design value in the water-stable 3D model, displaying the comparison result and rechecking the paving quality.
4. The intelligent paving thicknesswise water stabilization construction system of claim 1, further comprising:
The top of the second movable rod is fixed with a third prism which is used for keeping the same transverse position with the first prism and synchronously moving with the paver;
the second total station monitors the space coordinates of the third prism in real time and sends the space coordinates to the second control module;
The second control module is also connected with the first total station through signals, and the second control module is also connected with the space coordinate of the third prism and the space coordinate of the first prism to obtain actual transverse slope data, and corrects the transverse slope of the screed of the paver based on the actual transverse slope data.
5. The water stabilization construction method based on the intelligent paving large-thickness water stabilization construction system as claimed in any one of claims 1 to 4, which is characterized by comprising the following steps:
establishing a water stable 3D model of a road section to be paved through a modeling module, and inputting the model into a first control module and a second control module;
pairing the first total station with a first prism;
Starting the paver to start paving operation, wherein in the paving operation process: the first total station always tracks and monitors the azimuth and the space coordinate of the first prism; the first control module receives monitoring signals of the first total station and the angle sensor in real time, compares the monitored azimuth, the monitored space coordinate and the monitored large arm angle with design values in the water-stable 3D model, and controls the large arm angle of the paver and adjusts single-point paving elevation based on comparison results; the second control module receives monitoring signals of the transverse slope sensor in real time, compares the monitored screed angle with a design value in the water-stable 3D model, and controls the screed transverse slope of the paver and adjusts the paving angle based on a comparison result;
rolling the water stable base layer after finishing paving;
and (5) maintaining the water-stable base layer.
6. The water stabilization construction method according to claim 5, wherein during the paving operation, the second moving rod with the third prism fixed on the top is kept at the same transverse position with the first prism and moves synchronously with the paver, and the spatial coordinates of the third prism are monitored in real time by the second total station and sent to the second control module;
The second control module is used for connecting the space coordinates of the third prism and the space coordinates of the first prism in real time to obtain actual transverse slope data;
And correcting the transverse slope of the screed of the paver based on the actual transverse slope data and the monitoring signals of the transverse slope sensor.
7. The water stabilization construction method according to claim 6, wherein the method of correcting the screed cross slope of the paver based on the actual cross slope data and the monitoring signal of the cross slope sensor comprises:
Defining actual lateral slope data as a first slope and a monitoring signal of a lateral slope sensor as a second slope;
Judging whether the error of the first gradient and the second gradient is smaller than a set threshold value:
if yes, controlling the horizontal gradient of the screed of the paver to enable the second gradient to be in a designated range of the designed horizontal gradient in the water-stable 3D model;
If not, taking an average value of the first gradient and the second gradient, and controlling the horizontal gradient of the screed of the paver to enable the average value to be in a designated range of the designed horizontal gradient in the water-stable 3D model.
8. The water stabilization construction method according to claim 5, wherein during the paving operation, the first moving rod with the second prism fixed on the top is further moved along with the paving machine on the road surface on which the paving operation has been performed behind the paving machine, and the spatial coordinates of the second prism are monitored at regular time or at equal intervals by the second total station and sent to the mobile terminal;
the mobile terminal obtains the elevation information of the position of the first mobile rod based on the space coordinate of the second prism, compares the elevation information with the design elevation in the water-stable 3D model, and outputs and displays the comparison result;
and trimming the road sections with unqualified comparison results.
9. The water stabilization construction method of claim 8, wherein the method of correcting the road section in which the comparison result is not qualified comprises: removing the water-stable mixture in the unqualified road section by using a loader; the removed portion is manually filled and trimmed.
10. The water stable construction method according to claim 5, wherein the method of rolling the water stable base layer after the completion of the paving comprises:
using a double-steel-wheel road roller, advancing for static pressure once, retreating for strong vibration and compacting once;
Re-pressing the roller with a single steel wheel for one time, and re-pressing the roller with a rubber wheel for one time;
checking whether the surface of the water-stable base layer is locally isolated or not, if so, manually sprinkling water-stable fine materials, and rolling the manually sprinkling area by using a rubber-tire road roller;
And (5) carrying out final surface rolling operation by using a double-steel-wheel road roller.
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