CN-122013628-A - Asphalt macadam drainage base layer construction method for airport pavement

CN122013628ACN 122013628 ACN122013628 ACN 122013628ACN-122013628-A

Abstract

The invention relates to the technical field of airport pavement engineering construction, and provides a construction method of an asphalt macadam drainage base layer for an airport pavement, which comprises the following steps of forming a distributed temperature monitoring network by arranging temperature sensing equipment on an asphalt mixture transport vehicle, a paver and a road roller; the method comprises the steps of collecting temperature data of asphalt mixture in a transport vehicle, on a paving surface of a paver and in a road roller rolling area in real time, transmitting the collected temperature data to a control terminal in real time, comparing the received real-time temperature data with a plurality of preset process temperature thresholds by the control terminal, and based on a comparison result, generating a first control instruction for reducing the paving speed of the paver when the real-time temperature on the paving surface is lower than the paving temperature threshold and sending the first control instruction to the paver, and generating a second control instruction or early warning information for prompting the road roller to immediately start initial pressure when the real-time temperature in an initial pressure area is lower than the initial pressure temperature threshold by the control terminal.

Inventors

ZHANG LI
WEI YINGQI
HAN YANFEI
CHEN KEKE
YAO YUNJUN
XU ZHIYONG
XU YUNHE
WU HANG
LI NING
ZHANG HAIZHOU
CUI XU
YANG XIAOWU

Assignees

中铁北京工程局集团有限公司
中铁航空港建设有限公司

Dates

Publication Date: 20260512
Application Date: 20260115

Claims (10)

1. The construction method of the asphalt macadam drainage base layer for the airport pavement is characterized by comprising the following steps of: Step S1, respectively arranging one or more temperature sensing devices on an asphalt mixture transport vehicle, a paver and a road roller to form a distributed temperature monitoring network; S2, acquiring real-time temperature data of asphalt mixture in a transport vehicle, on a paving surface of a paver and in a rolling area of a road roller in real time through temperature sensing equipment; step S3, the acquired real-time temperature data are transmitted to a control terminal in real time; s4, the control terminal compares the received real-time temperature data with a plurality of preset process temperature thresholds, wherein the process temperature thresholds at least comprise a paving temperature threshold and an initial pressure temperature threshold; Step S5, based on the comparison result, the control terminal executes at least one of the following operations: when the real-time temperature on the paving surface is lower than a paving temperature threshold value, generating a first control instruction for reducing the paving speed of the paver, and sending the first control instruction to the paver; When the real-time temperature of the initial pressure area is lower than the initial pressure temperature threshold value, a second control instruction or early warning information for prompting the road roller to immediately start initial pressure is generated.
2. The construction method of asphalt macadam drainage base layer for airport pavement according to claim 1, wherein the temperature sensing device is an infrared temperature sensor array, the infrared temperature sensor array is connected with a multi-antenna communication module, The multi-antenna communication module comprises an omnidirectional antenna arranged at the top of a cab and a directional antenna arranged at the tail of a vehicle body and pointing to the center of a construction area on an asphalt mixture transport vehicle, wherein an infrared temperature sensor array is arranged above the inner side of a carriage, and the scanning surface of the infrared temperature sensor array faces to a mixture pile in the carriage; The multi-antenna communication module comprises a directional antenna arranged at the highest point of the top of the screed lifting cylinder, wherein the directional antenna points to the control terminal, the number of the infrared temperature sensor arrays is two, the first infrared temperature sensor array is arranged behind the hopper, the scanning surface of the first infrared temperature sensor array faces to the received mixed material flow, and the second infrared temperature sensor array is arranged on the bracket in front of the screed, and the scanning surface of the second infrared temperature sensor array faces to the paving operation surface; On the road roller, the multi-antenna communication module comprises an omnidirectional antenna arranged on the top of a roller support above a steel wheel, an infrared temperature sensor array is arranged on the front part of a frame, and the scanning surface of the infrared temperature sensor array faces to a paving layer to be rolled in the front; the multi-antenna communication module is configured to switch between its included antennas or to employ diversity reception depending on the received signal strength.
3. The method of constructing an asphalt macadam drainage base for an airport runway of claim 1, wherein said distributed temperature monitoring network further comprises a plurality of ground temperature sensing devices; The ground temperature sensing equipment is a fixed sensor and is arranged on the ground of a construction area in an array mode, wherein the arrangement position comprises an area to be paved in front of a paver, an area after initial pressing is finished behind a road roller and a ground receiving area below a discharge opening of a transport vehicle; Each ground temperature sensing device is in communication connection with the control terminal through a wireless communication module and is used for transmitting collected ground position temperature data to the control terminal in real time; The control terminal compares the received real-time temperature data from the ground temperature sensing equipment with a preset process temperature threshold value.
4. The construction method of asphalt macadam drainage base layer for airport pavement according to claim 1, wherein the step S2 comprises the following steps of: Setting a synchronous signal generator of a paving event on the paver, wherein the synchronous signal generator generates a synchronous broadcasting signal and wirelessly broadcasts when the paver finishes a preset paving operation unit; The data acquisition unit of the asphalt mixture transport vehicle is configured to: only when the synchronous broadcast signal is received and the synchronous broadcast signal is in a state of unloading the paver, starting to acquire temperature data of the asphalt mixture in the carriage once; The data acquisition unit of the road roller is configured to: immediately acquiring asphalt mixture temperature data of the area right below the current steel wheel once after receiving the synchronous broadcast signal; all the collected temperature data are associated with a synchronous event serial number identifying the paving work unit.
5. The construction method of asphalt macadam drainage base layer for airport pavement according to claim 1, wherein the asphalt mixture transport vehicle, the paver and the road roller are integrated with a satellite time service module; in step S2, the real-time acquisition of temperature data specifically includes: The method comprises the steps that when an asphalt mixture transport vehicle, a paver and a road roller acquire temperature data through temperature sensing equipment, the current accurate time provided by a satellite time service module is read, and the current accurate time is used as a time stamp to be bound with corresponding temperature data, so that a temperature data packet with the time stamp is generated; In step S3, the temperature data packet with the time stamp is transmitted to the control terminal; In step S4, the control terminal performs time alignment processing on the received temperature data packet with the timestamp, where the time alignment processing includes: And selecting temperature data of the timestamp difference value in a preset synchronous time window, and comparing the temperature data with a preset process temperature threshold value.
6. The construction method of asphalt macadam drainage base layer for airport pavement according to claim 1, wherein the step S4 specifically comprises: according to temperature data of a paving surface of the paver, the control terminal divides the paving surface into a central area measuring point group and an edge area measuring point group according to the acquisition position, and a first real-time average temperature and a second real-time average temperature are calculated respectively; wherein the comparing includes comparing the first real-time average temperature to a paving temperature threshold and comparing the second real-time average temperature to an edge paving temperature threshold that is 5-10 ℃ below the paving temperature threshold; For temperature data from a rolling area of the road roller, the control terminal calculates the moving average temperature of the data in the last N seconds of the temperature data, wherein the comparison comprises comparing the moving average temperature with an initial pressure temperature threshold value; for temperature data from the asphalt mixture transport vehicle, the control terminal counts the number of measuring points of which the real-time temperature is lower than a transportation guarantee temperature threshold value, wherein, The comparison comprises the step of judging that the temperature of the transport vehicle is abnormal when the number of the measuring points exceeds the preset proportion or absolute number.
7. The construction method of asphalt macadam drainage base layer for airport pavement according to claim 1, wherein the process temperature threshold is based on an environmental temperature value, asphalt mixture type and drainage base layer design thickness, and the current paving temperature threshold and initial pressure temperature threshold are dynamically calculated according to a built-in threshold calculation model, The environmental temperature value is acquired in real time through environmental temperature sensing equipment arranged on a construction site; the asphalt mixture type and the design thickness of the drainage base layer are input or selected through a man-machine interaction interface of the control terminal.
8. The construction method of asphalt macadam drainage base for airport pavement according to claim 1, wherein in step S5: A grading response rule based on temperature difference is preset in the control terminal; When a first control instruction for reducing the paving speed of the paver is generated, the control terminal executes: If the temperature difference is located in the first preset interval, generating an instruction for reducing the speed to the original speed; if the temperature difference is located in a second larger preset interval, generating an instruction for reducing the speed to a lower original speed; If the temperature difference is located in a third larger preset interval, generating an instruction for reducing the speed to a lower original speed; when a second control instruction or early warning information for prompting the road roller to immediately start initial pressure is generated, the control terminal executes: if the temperature difference is located in the first preset interval, generating an instruction containing a prompt for preferentially rolling the edge area; If the temperature difference is located in the second preset interval, generating a strong instruction of immediate full-width initial pressure; If the temperature difference is in the third preset interval, generating a highest priority order and an audible and visual alarm for stopping advancing and strengthening rolling on site.
9. The construction method of asphalt macadam drainage base layer for airport pavement according to claim 1, wherein a fusing temperature threshold lower than an initial pressure temperature threshold is preset in the control terminal; in step S4, the control terminal further performs comparison between the real-time temperature and the fusing temperature threshold; In step S5, if the real-time temperature of any area is lower than the fusing temperature threshold, the control terminal performs the following emergency operations: Generating and sending an emergency stop instruction to the paver of the current operation; Generating an audible and visual alarm and a graphic early warning for indicating the unqualified road section; and generating a work order containing the heating remedy or the rework treatment suggestion and pushing the work order to the management terminal.
10. The construction method of asphalt macadam drainage base layer for airport pavement according to claim 1, wherein the control terminal is internally provided with a device capacity database, and the identification numbers of the construction devices, the corresponding performance parameters and the control interface types are stored; The performance parameters comprise the minimum allowable working speed of the paver and the speed adjusting precision, and whether the road roller supports remote automatic control or not; the control interface type comprises direct speed value setting or only supporting start-stop/speed regulation percentage command; in step S5, before generating a control instruction to a specific device, the control terminal executes: Inquiring a device capability database according to the device identification number; based on the queried equipment capability information, carrying out compliance verification and adaptation calculation on the instruction parameters to be generated; And generating and transmitting the adapted control instruction or the substitute information.

Description

Asphalt macadam drainage base layer construction method for airport pavement Technical Field The invention relates to the technical field of airport pavement engineering construction, in particular to a construction method of an asphalt macadam drainage base layer for an airport pavement. Background The asphalt macadam drainage base layer of the airport pavement is positioned below the cement concrete surface layer, and the construction quality, particularly compaction uniformity and void ratio stability, of the asphalt macadam drainage base layer is directly related to the drainage performance and long-term durability of the pavement. The current construction method is mainly carried out according to road experience through a preset mixing ratio and fixed paving and rolling process. However, the construction quality of the asphalt mixture is extremely sensitive to the temperature, and the paving temperature, the initial pressure temperature and the final pressure temperature have strict requirements. In the prior art, manual handheld temperature measuring equipment is generally adopted for random spot check on temperature monitoring. The method has the obvious defects that firstly, the spot inspection is discrete and lagged, continuous and complete temperature field data of the whole construction process (from a transport vehicle to a spreading surface to a rolling area) cannot be obtained, a large number of monitoring blind areas exist, secondly, when temperature abnormality is found, a problem link is difficult to quickly locate, accurate process adjustment is carried out, local quality defects are often caused, and finally, the construction quality is excessively dependent on the experience of operators, and standardized and traceable refined quality control is difficult to realize. Therefore, a technical scheme capable of monitoring the temperature of the whole flow of asphalt macadam drainage base layer construction in real time and comprehensively and realizing dynamic feedback control is urgently needed. Disclosure of Invention The application provides a construction method of an asphalt macadam drainage base layer for an airport pavement, which is used for solving the problems that in the construction of the existing airport pavement asphalt macadam drainage base layer, the temperature of an asphalt mixture is lack of real-time, comprehensive and accurate monitoring and closed-loop feedback control, so that the construction quality is uneven, manual experience is relied, and potential quality hidden trouble is difficult to discover and correct in real time. In order to achieve the above purpose, the present application provides the following technical solutions: in a first aspect, the application provides a construction method of an asphalt macadam drainage base layer for an airport pavement, comprising the following steps: Step S1, respectively arranging one or more temperature sensing devices on an asphalt mixture transport vehicle, a paver and a road roller to form a distributed temperature monitoring network; S2, acquiring real-time temperature data of asphalt mixture in a transport vehicle, on a paving surface of a paver and in a rolling area of a road roller in real time through temperature sensing equipment; step S3, the acquired real-time temperature data are transmitted to a control terminal in real time; s4, the control terminal compares the received real-time temperature data with a plurality of preset process temperature thresholds, wherein the process temperature thresholds at least comprise a paving temperature threshold and an initial pressure temperature threshold; Step S5, based on the comparison result, the control terminal executes at least one of the following operations: when the real-time temperature on the paving surface is lower than a paving temperature threshold value, generating a first control instruction for reducing the paving speed of the paver, and sending the first control instruction to the paver; When the real-time temperature of the initial pressure area is lower than the initial pressure temperature threshold value, a second control instruction or early warning information for prompting the road roller to immediately start initial pressure is generated. With reference to the first aspect, the temperature sensing device is an infrared temperature measuring sensor array, the infrared temperature measuring sensor array is connected with a multi-antenna communication module, wherein, The multi-antenna communication module comprises an omnidirectional antenna arranged at the top of a cab and a directional antenna arranged at the tail of a vehicle body and pointing to the center of a construction area on an asphalt mixture transport vehicle, wherein an infrared temperature sensor array is arranged above the inner side of a carriage, and the scanning surface of the infrared temperature sensor array faces to a mixture pile in the carriage; The multi-antenna communicatio