WO2022127142A1

WO2022127142A1 - Intelligent runway and runway surface information monitoring method

Info

Publication number: WO2022127142A1
Application number: PCT/CN2021/111785
Authority: WO
Inventors: 凌建明; 张家科; 方意心; 赵鸿铎
Original assignee: 同济大学
Priority date: 2020-12-17
Filing date: 2021-08-10
Publication date: 2022-06-23

Abstract

An intelligent runway and a runway surface information monitoring method. The intelligent runway comprises an airport runway body (1), wherein the airport runway body (1) sequentially comprises, from top to bottom, a runway surface slab (11), a base layer (12) and a foundation (13); and a foundation settlement sensing module (2), a runway surface characteristics sensing module (3), a data storage module (4) and a risk evaluation module (5) are arranged in the airport runway body (1). The runway surface information monitoring method comprises: acquiring data related to foundation settlement and runway surface characteristics, and providing settlement and runway surface characteristics states related to the corresponding data. Accurate sensing and scientific judgment can be performed on the runway.

Description

[Title of invention formulated by ISA pursuant to Rule 37.2] An intelligent runway and a method for monitoring pavement information

technical field

The invention relates to the field of airport engineering, in particular to an intelligent runway and an airport road surface information monitoring method.

Background technique

The airport runway is the key support to ensure the safe and efficient operation of the aircraft surface. Accurate perception and scientific prediction of the road surface performance and road surface operation status are the basis for ensuring the safe operation of the runway. Traditional airport runways use manual detection and manual judgment as the main means to detect pavement performance and operating status. The operation procedures are cumbersome, inefficient, and the risk of misjudgment is high, which is not enough to meet the new requirements of airport runway operation safety, efficiency and efficiency. Smart solutions are required.

SUMMARY OF THE INVENTION

In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to provide an intelligent runway and airport pavement information monitoring method for solving the problems in the prior art.

In order to achieve the above purpose and other related purposes, one aspect of the present invention provides an intelligent runway, including an airport runway body, the airport runway body includes a road panel, a base layer and a foundation in sequence from top to bottom, and the airport runway body is provided with Foundation settlement perception module and pavement profile perception module;

The foundation settlement sensing module includes a single-point settlement measurement device, a layered settlement measurement device, a pressure differential settlement measurement device, a foundation local strain monitoring device, a humidity measurement device, and a matrix suction measurement device;

The pavement profile perception module includes a point pressure monitoring device on the base surface, a distributed pressure monitoring device on the base surface, a strain monitoring device inside the pavement, a temperature monitoring device inside the pavement, an instantaneous deflection monitoring device on the pavement, and an aircraft wheel. Track monitoring device, road surface water film monitoring device and road surface snow and ice coverage monitoring device;

Also includes a data storage module, the data storage module includes a foundation settlement data storage device, a foundation moisture content data storage device, a slab bottom contact condition data storage device, a pavement mechanical response data storage device and a pavement slippery state data storage device;

The foundation settlement data storage device is respectively connected with a single-point settlement measurement device, a layered settlement measurement device, a differential pressure settlement measurement device and a foundation local strain monitoring device;

The ground moisture content data storage device is signally connected to the humidity measurement device and the substrate suction measurement device respectively;

The said plate bottom contact condition data storage device is respectively connected with a signal of a point pressure monitoring device on the surface of the base layer and a distributed pressure monitoring device on the surface of the base layer;

Said pavement mechanical response data storage device is signally connected with a pavement internal strain monitoring device, a pavement internal temperature monitoring device, a pavement instantaneous deflection monitoring device and an aircraft wheel track monitoring device;

The data storage device for the wet and slippery state of the pavement is respectively connected to the pavement water film monitoring device and the pavement ice and snow coverage monitoring device in signal connection.

In some embodiments of the present invention, the thickness of the road panel is greater than or equal to 20 cm;

In some embodiments of the present invention, the thickness of the base layer is > 15 cm.

In some embodiments of the present invention, the single-point settlement measurement device is located in the ground layer, the depth of the single-point settlement measurement device is greater than the depth of the bearing layer, and the number of the single-point settlement measurement device is one or more, When the number of single-point settlement measuring devices is multiple, the distance between each single-point settlement measuring device is ≥5m.

In some embodiments of the present invention, the layered settlement measurement device is located in the ground layer, the number of the layered settlement measurement device is multiple, and is evenly distributed in the direction of gravity of the single-point settlement measurement device, each of the The distance between the layered settlement measuring devices is ≥5m.

In some embodiments of the present invention, the differential pressure settlement measuring devices are located in the base layer, the number of the differential pressure settlement measuring devices is multiple, and they are evenly distributed along the extension direction of the airport runway body. The spacing between them is 5m to 40m.

In some embodiments of the present invention, the local ground strain monitoring device is located in the ground layer, and the ground local strain monitoring device is distributed along the extension direction of the airport runway body.

In some embodiments of the present invention, the humidity measuring devices are located in the ground layer, the number of the humidity measuring devices is one or more, and when the number of the humidity measuring devices is multiple, the distance between the humidity measuring devices ≥10m.

In some embodiments of the present invention, the substrate suction measurement device is located in the ground layer, the number of the substrate suction measurement device is one or more, and when the number of substrate suction measurement devices is multiple, each substrate suction measurement device The distance between them is ≥10m.

In some embodiments of the present invention, the point pressure monitoring devices on the surface of the base layer are located in the base layer, and the number of the point pressure monitoring devices on the surface of the base layer is one or more. When there are more than one, the distance between the point pressure monitoring devices on the surface of each base layer is ≥0.2m.

In some embodiments of the present invention, the distributed pressure monitoring devices on the surface of the base layer are located in the base layer, and are evenly distributed along the extension direction of the airport runway body and perpendicular to the extension direction of the airport runway body.

In some embodiments of the present invention, the strain monitoring devices inside the pavement surface are located in the pavement deck layer, and the number of the strain monitoring devices in the pavement surface is one or more. The spacing between internal strain monitoring devices is ≥0.5m.

In some embodiments of the present invention, the temperature monitoring devices inside the road surface are located in the road surface layer, and are distributed in layers in the direction of gravity of the temperature monitoring devices inside the road surface. When the number of temperature monitoring devices inside the road surface is multiple, each track The horizontal spacing of the temperature monitoring devices inside the surface is ≥0.5m, and the vertical spacing is ≥5cm.

In some embodiments of the present invention, the pavement instantaneous deflection monitoring device is located in the pavement deck layer, and the number of the pavement instantaneous deflection monitoring device is one or more. When there are multiple pavement instantaneous deflection monitoring devices, each track The distance between the surface instantaneous deflection monitoring devices is greater than or equal to 0.5m.

In some embodiments of the invention, the aircraft track monitoring device is located at the edge of the airport runway body.

In some embodiments of the present invention, the pavement surface water film monitoring devices are located in the pavement deck layer, and the number of pavement surface water film monitoring devices is one or more. The distance between water film monitoring devices is ≥0.5m.

In some embodiments of the present invention, the pavement surface snow and ice coverage monitoring devices are located in the pavement deck layer, and the number of pavement surface snow and ice coverage monitoring devices is one or more. The distance between snow and ice monitoring devices is ≥0.5m.

In some embodiments of the present invention, the intelligent runway further includes a risk assessment module, and the risk assessment module includes:

The foundation settlement risk assessment device is used for assessing the foundation settlement risk according to the foundation settlement data of the whole pavement and the relationship between soil and water, and the foundation settlement risk assessment module is connected with a signal;

The bottom void risk assessment device is used to evaluate the bottom void risk according to the void state of the bottom plate, and the bottom void risk assessment module is connected with the signal;

A pavement fracture risk evaluation device, used for evaluating the pavement fracture risk according to the mechanical response of the pavement structure, and the pavement fracture risk evaluation module is connected with a signal;

An aircraft hydroplaning risk evaluation device is used for evaluating the aircraft hydroplaning risk according to the wet state of the road surface, and the aircraft hydroplaning risk evaluation module is connected with a signal.

Another aspect of the present invention provides an airport pavement information monitoring method, which monitors the airport pavement information through the above-mentioned intelligent runway.

In some embodiments of the present invention, the method for monitoring airport road surface information includes:

1) Provide single-point settlement data, layered settlement data, differential pressure settlement data, local foundation strain data, humidity data and matrix suction data;

2) Provide base surface pressure data, base middle pressure data, pavement internal strain data, pavement internal temperature data, pavement instantaneous deflection data, aircraft wheel track data, pavement water film data and pavement snow and ice coverage data ;

3) According to single-point settlement data, layered settlement data, differential pressure settlement data, and local foundation strain data, provide the foundation settlement data of the entire pavement;

4) Provide soil-water relationship according to humidity data and substrate suction data;

5) According to the pressure data on the surface of the base layer and the pressure data in the middle of the base layer, the empty state of the bottom of the board is provided;

6) According to the internal strain data of the pavement, the internal temperature data of the pavement, the instantaneous deflection data of the pavement, and the data of the aircraft wheel track, the mechanical response of the pavement structure is provided;

7) According to the pavement water film data and pavement ice and snow coverage data, provide the slippery state of the pavement.

In some embodiments of the present invention, the method for monitoring airport pavement information further includes:

8) According to the foundation settlement data of the whole pavement and the relationship between soil and water, evaluate the risk of foundation settlement;

9) According to the empty state of the bottom of the plate, evaluate the risk of emptying of the bottom of the plate;

10) According to the mechanical response of the pavement structure, evaluate the fracture risk of the pavement;

11) According to the wet and slippery state of the pavement, evaluate the risk of aquaplaning of the aircraft.

Description of drawings

FIG. 1 shows a schematic structural diagram of an intelligent runway provided by the present invention.

FIG. 2 is a schematic flowchart of the method for monitoring airport pavement information provided by the present invention.

FIG. 3 is a schematic diagram showing the calculation of strain and vertical displacement of the ground local strain monitoring device of the present invention.

FIG. 4 is a schematic diagram showing the analytical relationship between optical fiber strain and vertical displacement based on a calibration test in an embodiment of the present invention; wherein (a) shows the optical fiber strain after applying different deformations at the midpoint, and (b) and (c) respectively show The fiber strain under the same deformation amount is applied at different positions to the left and right of the midpoint.

FIG. 5 is a schematic diagram of settlement back calculation based on optical fiber strain in an embodiment of the present invention.

FIG. 6 is a schematic diagram of a cloud map for monitoring subgrade settlement in an embodiment of the present invention (subgrade settlement monitoring data).

FIG. 7 is a schematic diagram showing monitoring data and correction results of subgrade settlement in an embodiment of the present invention.

Component label description

1 Airport runway body

11 panels

12 Grassroots

13 Foundation

2 The foundation settlement sensing module

21 Single-point settlement measuring device

22 Stratified settlement measuring device

23 Differential pressure settlement measuring device

24 Local Strain Monitoring Device for Foundation

25 Humidity measuring device

26 Matrix suction measurement device

3 Road surface feature perception module

31 Point pressure monitoring device on the surface of the base layer

32 Distributed pressure monitoring device on the surface of the base

33 Internal Strain Monitoring Device of Pavement Surface

34 Internal temperature monitoring device of road surface

35 Pavement Instantaneous Deflection Monitoring Device

36 Aircraft wheel track monitoring device

37 Road surface water film monitoring device

38 Road surface snow and ice monitoring device

4 Data storage module

41 Foundation settlement data storage device

42 Ground water content data storage device

43 The data storage device for the contact condition of the bottom of the board

44 Pavement Mechanical Response Data Storage Device

45 Data storage device for road surface slippery state

5 Risk assessment module

51 Foundation Settlement Risk Assessment Device

52 Risk assessment device for voiding at the bottom of the board

53 Pavement fracture risk assessment device

54 Aircraft hydroplaning risk assessment device

Detailed ways

The embodiments of the present invention are described below through specific specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

Please refer to Figure 1 to Figure 2. It should be noted that the drawings provided in this embodiment are only to illustrate the basic concept of the present invention in a schematic way, so the drawings only show the components related to the present invention rather than the number, shape and the number of components in actual implementation. For dimension drawing, the type, quantity and proportion of each component can be changed at will in actual implementation, and the component layout may also be more complicated.

A first aspect of the present invention provides an intelligent runway, including an airport runway body 1, the airport runway body 1 includes a road panel 11, a base layer 12 and a foundation 13 in sequence from top to bottom, and the airport runway body 1 is provided with a foundation settlement Perception module 2 and pavement profile perception module 3; the foundation settlement perception module 2 includes a single-point settlement measurement device 21, a layered settlement measurement device 22, a differential pressure settlement measurement device 23, a foundation local strain monitoring device 24, and a humidity measurement device 25 and a substrate suction measurement device 26; the pavement profile perception module 3 includes a base-level surface point pressure monitoring device 31, a base-level surface distributed pressure monitoring device 32, a pavement surface internal strain monitoring device 33, and a temperature monitoring device inside the pavement surface The device 34, the road surface instantaneous deflection monitoring device 35, the aircraft wheel track monitoring device 36, the road surface water film monitoring device 37 and the road surface snow and ice coverage monitoring device 38; also include a data storage module 4, the data storage module 4 includes a foundation Settlement data storage device 41, foundation moisture content data storage device 42, slab bottom contact condition data storage device 43, pavement mechanical response data storage device 44 and pavement slippery state data storage device 45; the foundation settlement data storage device 41 Signal connection with the single-point settlement measurement device 21, the layered settlement measurement device 22, the differential pressure settlement measurement device 23 and the foundation local strain monitoring device 24 respectively; the foundation moisture content data storage device 42 is respectively connected with the humidity measurement device 25 and the substrate suction The measuring device 26 is signal-connected; the plate bottom contact condition data storage device 43 is respectively connected to the base-level surface point pressure monitoring device 31 and the base-level surface distributed pressure monitoring device 32; the pavement mechanical response data storage device 44 They are respectively connected with the road surface internal strain monitoring device 33, the road surface internal temperature monitoring device 34, the road surface instantaneous deflection monitoring device 35 and the aircraft wheel track monitoring device 36; the road surface wet and slip state data storage device 45 is respectively connected with the road surface. The surface water film monitoring device 37 is signally connected to the road surface snow and ice monitoring device 38 . The above-mentioned intelligent runway can provide single-point settlement data, layered settlement data, pressure differential settlement data, local foundation strain data, humidity data and matrix suction data through the foundation settlement sensing module 2, and can provide the base surface surface through the road surface property sensing module 3. Pressure data, pressure data in the middle of the base, internal strain data of the pavement, internal temperature data of the pavement, instantaneous deflection data of the pavement, aircraft wheel track data, data of the water film of the pavement and data of the snow and ice cover of the pavement, and can be related to the data. The data is sent to the data storage module 4, and through further analysis of the relevant data, the real-time monitoring and timely decision-making of the risk of foundation settlement, the risk of voiding the bottom of the slab, the risk of road surface fracture, and the risk of aircraft hydroplaning can be realized. It can give early warning in time, and can actively determine the maintenance plan.

The intelligent runway provided by the present invention may include the airport runway body 1 . The ground settlement perception module 2 and the pavement profile perception module 3 are usually distributed at appropriate positions of the airport runway body 1 to collect corresponding data information. As mentioned above, the airport runway body may include the road panel 11 , the base layer 12 and the foundation 13 from top to bottom, and the base layer 12 may further include an upper base layer and a lower base layer. In the airport runway body 1, the road panel 11 is usually used to directly bear the load of the aircraft and the effect of the external environment, and provide a comfortable and safe running surface for the aircraft. The material of the road panel 11 can usually be cement concrete or the like, and the thickness of the road panel 11 is usually ≥ 20 cm. In the airport runway body 1, the general function of the upper base layer is to receive the vertical force diffused from the runway panel. The material of the upper base layer can usually be concrete, asphalt mixture, inorganic binder stabilized materials, crushed stone mixture, etc. The thickness of the upper base layer is usually ≥10cm. In the airport runway body 1, the lower base layer usually functions to diffuse and transmit the vertical force diffused from the upper base layer to the lower structural layer. The material of the lower base can usually be concrete, asphalt mixture, inorganic binder stabilized materials, crushed stone mixture, etc. The thickness of the lower base is usually ≥10cm. In the airport runway body 1, the foundation 13 generally functions as a support for the road deck and the base layer. The material of the foundation 13 can usually be soil, stone, soil-rock mixture and the like.

The smart runway provided by the present invention may include a single-point subsidence measurement device 21 , and the single-point subsidence measurement device 21 may be used to monitor the absolute subsidence value of a single point to be monitored by the airport runway body 1 . The single-point settlement measurement device 21 may be located in the foundation 13 layer, and the depth of the single-point settlement measurement device 21 is generally greater than the depth of the bearing layer. The number of single-point settlement measurement devices 21 may be one or more, and the distribution method is usually point distribution. When the number of single-point settlement measurement devices 21 is multiple, the spacing between the single-point settlement measurement devices 21 is usually ≥5m. Suitable devices that can be used as the single-point settlement measurement device 21 and their arrangement should be known to those skilled in the art. For example, the single-point sedimentation measuring device 21 can generally be an optical signal sensor, etc., specifically a sedimentation meter, etc., more specifically, a single-point sedimentation meter (NZS-FBG-DS(1)) from Suzhou Nanzhi Sensing Technology Co., Ltd. Wait. For another example, the arrangement of the single-point settlement measuring device 21 may be a drilled hole, and the depth of the drilled hole is usually greater than the depth of the bearing layer. A good single-point settlement measuring device 21, steel wire rope, guide hammer, etc. are put into the borehole. Under the self-gravity of the guide hammer, the single-point settlement measuring device 21 is brought into the hole. After the single-point settlement measuring device 21 is installed, the Backfill the borehole, and backfill the bottom (for example, 60cm±4cm) and head (for example, 30cm±2cm) with cement mortar, and backfill the remaining space with a mixture of micro-expanded soil balls and fine sand.

The smart runway provided by the present invention may include a layered settlement measurement device 22, and the layered subsidence measurement device 22 may be used to monitor a single point (for example, a single point monitored by the single-point subsidence measurement device 21) that needs to be monitored by the airport runway body 1. The absolute settlement values of different horizons corresponding to a single point) in the direction of gravity. The stratified settlement measuring device 22 may be located in the 13th floor of the foundation. The number of the stratified settlement measuring device 22 is usually multiple, and is usually evenly distributed in the direction of gravity of the single-point settlement measuring device 21. The distance between them is usually ≥5m. Appropriate devices that can be used as the stratified settlement measuring device 22 and their arrangement should be known to those skilled in the art. For example, the layered sedimentation measuring device 22 can generally be an optical signal sensor, etc., specifically a sedimentation meter, etc., more specifically, a layered sedimentation meter (NZS-FBG-DPG) of Suzhou Nanzhi Sensing Technology Co., Ltd. and the like. For another example, the layout of the layered settlement measuring device 22 may be as follows: drilling a hole on the working surface of the foundation to the bearing layer, and then placing the fixed layered settlement measuring device 22, steel wire rope, guide hammer, etc. into the inside of the borehole, Under the self-gravity of the guide hammer, the layered settlement measuring device 22 is brought into the hole. After the layered settlement measuring device 22 is installed, the drilling is backfilled, the bottom (for example, 60cm±4cm), the head (for example, 30cm±4cm) 2cm) is backfilled with cement mortar, and the rest of the space is backfilled with a mixture of micro-expanded soil balls and fine sand.

In the smart runway provided by the present invention, a differential pressure settlement measuring device 23 may be included, and the differential pressure settlement measuring device 23 may be used to monitor the relative settlement value between each point in the horizontal direction of the airport runway body 1 (for example, relative to a single The relative settlement value of a single point monitored by the point settlement measuring device 21). The differential pressure settlement measuring devices 23 may be located in the foundation layer 13. The number of differential pressure settlement measuring devices 23 is usually multiple, and they can usually be evenly distributed along the extension direction of the airport runway body 1. The distance between the differential pressure settlement measuring devices 23 It can be 5m to 40m. Suitable devices that can be used as the differential pressure settlement measuring device 23 and their arrangement should be known to those skilled in the art. For example, the differential pressure sedimentation measuring device 23 can generally be an optical signal sensor, etc., specifically a sedimentation meter, etc., more specifically, an intelligent sedimentation meter (NZS-FBG-HD) of Suzhou Nanzhi Sensing Technology Co., Ltd., and the like. For another example, the layout of the differential pressure settlement measuring device 23 may be as follows: opening a groove (for example, width ≥ 60 cm, depth ≥ 68 cm) on the working surface of the foundation, and after laying the differential pressure settlement measuring device 23, place the differential pressure settlement measuring device 23. The auxiliary equipment (such as communication optical fiber, main water pipe, ventilation pipe, etc.) is introduced into the protection pipe, C15 cement concrete is used at the position of the liquid storage tank to fix the liquid storage tank and the bottom of the groove, antifreeze is injected into the liquid storage tank, and the Remove the air and air bubbles in the main water pipe; lead out the water supply pipe, ventilation pipe and communication optical fiber of the differential pressure settlement measuring device 23 from the waterproof interface above the side of the liquid storage tank, and then wrap the fine sand with geotextile for protection, and the fine sand layer is thick It can be 20cm±2cm, with concrete (eg, C15 concrete) filled up to the top surface of the lower base.

In the intelligent runway provided by the present invention, a local foundation strain monitoring device 24 may be included, and the local foundation local strain monitoring device 24 may be used to monitor the local foundation strain distribution. The foundation local strain monitoring device 24 is located in the 13th floor of the foundation, and the extension direction of the foundation local strain monitoring device 24 and the extension direction of the differential pressure settlement measurement device 23 are usually matched, that is, it can be distributed along the extension direction of the airport runway body 1, and the foundation The distance between the local strain monitoring device 24 and the differential pressure settlement measurement device 23 is usually relatively short. The ground-based local strain monitoring device 24 can generally be an optical signal sensor, and specifically can be an optical cable or the like. The ground local strain monitoring device 24 may generally include a temperature-compensated optical cable and a metal-based cable-shaped optical cable. The optical cable extends in a straight line (the straight extension usually means that the metal-based cable-shaped optical cable can apply a certain prestress to the two ends of the optical fiber when it is buried, so that it is in a straight state, so that it can extend straight in the base layer 12), thus To realize the effective perception of the deformation of the slight gravity direction, the temperature compensation optical cable is non-linear extension (non-linear extension usually refers to the temperature compensation optical cable being in a relaxed and non-straightened state when it is buried (for example, in the airport pavement 1 of unit width, the temperature The length of the compensation optical cable can be 1.05 to 1.20 times the length of the metal-based cable-shaped optical cable), so that it can extend non-linearly in the base layer 12). The temperature-compensated optical cable in a relaxed state has no perception of slight vertical deformation, and only measures the temperature The strain amount brought by the change, the optical fiber strain amount obtained by the measurement can be used to correct the optical fiber strain amount obtained by the measurement of the metal-based cable-shaped optical cable extending in a straight line. The distance between the foundation local strain monitoring device 24 and the differential pressure settlement measurement device 23 should not be too large. , 15~20cm, 20~25cm, or 25~30cm, the distance between temperature compensation optical cable and metal-based cable-shaped optical cable can usually be ≤5cm, ≤1cm, 1~2cm, 2~3cm, 3~4cm, or 4 ~ 5cm, so that they can be matched as a whole. Under the premise of the same extension direction, the corresponding parts can be measured for the same measurement area to ensure the reliability of the data. The layout of the foundation local strain monitoring device 24 can be as follows: groove the working surface of the foundation, and after laying the foundation local strain monitoring device 24, lead the communication optical fiber out of the road shoulder, wrap the fine sand with geotextile for protection, and fill the top with concrete to the bottom. base top.

In the smart runway provided by the present invention, a humidity measuring device 25 may be included, and the humidity measuring device 25 may be used to monitor the humidity of the foundation soil. The humidity measurement devices 25 may be located in the foundation layer 13, and the number of the humidity measurement devices 25 may be one or more, and the distribution mode is usually point distribution. When the number of humidity measurement devices 25 is multiple, each humidity measurement device 25 The spacing between them is usually ≥10m. Suitable devices that can be used as humidity measuring device 25 and how to arrange them should be known to those skilled in the art. For example, the humidity measuring device 25 can generally be an electrical signal sensor, etc., specifically a hygrometer, etc., more specifically, a hygrometer (5TM) from Beijing Ligaotai Technology Co., Ltd., and the like. For another example, the arrangement of the humidity measuring device 25 can be as follows: a groove is formed on the working surface of the foundation, the humidity measuring device 25 is inserted into the side wall of the groove, the communication cable is led out of the shoulder, the fine sand is wrapped with geotextile for protection, and the top is filled with Concrete to the top surface of the lower base.

The intelligent runway provided by the present invention may include a substrate suction measurement device 26, and the substrate suction measurement device 26 may be used to monitor the substrate suction of the foundation soil. The substrate suction measurement device 26 may be located in the foundation layer 13, and the number of the substrate suction measurement device 26 may be one or more, and the distribution mode is usually point distribution. The spacing between suction measuring devices 26 is typically ≥ 10 m. Suitable devices that can be used as the substrate suction measurement device 26 and their arrangement should be known to those skilled in the art. For example, the substrate suction measurement device 26 can be generally an electrical signal sensor, etc., specifically a substrate suction meter, etc., more specifically a substrate suction meter (MPS-6) of Beijing Ligaotai Technology Co., Ltd., and the like. For another example, the arrangement of the substrate suction measuring device 26 can be as follows: a trench is opened on the working surface of the foundation, the substrate suction measuring device 26 is inserted into the sidewall of the trench, the communication cable is led out of the shoulder, and the fine sand is wrapped with geotextile for protection, Fill concrete up to the top of the lower base.

The intelligent track provided by the present invention may include a point pressure monitoring device 31 on the surface of the base layer, and the point pressure monitoring device 31 on the surface of the base layer can be used to monitor the pressure value of the track panel 11 on the base layer 12 (the position of the upper base layer surface). The point pressure monitoring devices 31 on the surface of the base layer can be located in the 12th layer of the base layer, and the number of the point pressure monitoring devices 31 on the surface of the base layer is one or more, and the distribution method is usually point distribution. When the number of devices 31 is multiple, the distance between the point pressure monitoring devices 31 on the surface of each base layer is usually ≥0.2m. Appropriate devices that can be used as the point pressure monitoring device 31 on the surface of the base layer and their arrangement should be known to those skilled in the art. For example, the point pressure monitoring device 31 on the surface of the base layer can usually be an optical signal sensor, etc., specifically an earth pressure cell, etc., more specifically, an earth pressure cell (NZS-FBG-EPC) of Suzhou Nanzhi Sensing Technology Co., Ltd. Wait. For another example, the layout method of the point pressure monitoring device 31 on the surface of the base layer may be: after the construction of the upper base layer is completed, the point pressure monitoring device 31 on the surface of the base layer is carved and laid, and the communication optical fiber is led out of the shoulder.

In the intelligent track provided by the present invention, a distributed pressure monitoring device 32 on the surface of the base layer may be included, and the distributed pressure monitoring device 32 on the surface of the base layer may be used to monitor the pressure value of the track panel 11 on the base layer 12 (the difference between the upper base layer and the lower base layer). location). The distributed pressure monitoring devices 32 on the surface of the base layer may be located in the 12th floor of the base layer, and may be distributed evenly along the extension direction of the airport runway body 1 and perpendicular to the extension direction of the airport runway body 1 . Appropriate devices that can be used as the distributed pressure monitoring device 32 on the surface of the base layer and their arrangement should be known to those skilled in the art. For example, the distributed pressure monitoring device 32 on the surface of the base layer can generally be an optical signal sensor, etc., specifically a pressure sensing element, etc., more specifically a pressure sensing element (B609D) of Shanghai Bian Sensing Technology Co., Ltd., etc. For another example, the layout of the distributed pressure monitoring device 32 on the surface of the base layer may be as follows: before the construction of the upper base layer, a number of steel plates of suitable size are placed in the area where the sensor is laid to occupy the sensor installation space, and after the construction of the upper base layer is completed, A distributed pressure bearing monitoring device 32 on the surface of the base layer is arranged in the groove where the steel plate is located, and the communication optical fiber is led out of the shoulder.

In the intelligent runway provided by the present invention, a track surface internal strain monitoring device 33 may be included, and the track surface internal strain monitoring device 33 may be used to monitor the internal strain value of the track surface structure. The track internal strain monitoring device 33 may be located in the layer 11 of the track deck, and the number of the track internal strain monitoring device 33 may be one or more, and its distribution is usually point distribution. When the number of the track internal strain monitoring device 33 is: When there are more than one, the distance between the strain monitoring devices 33 inside each road surface is usually ≥0.5m. Suitable devices that can be used as the inner surface strain monitoring device 33 and their arrangement should be known to those skilled in the art. For example, the internal strain monitoring device 33 of the pavement can generally be an optical signal sensor or the like, specifically a strain sensor or the like, and more specifically a strain gauge (BA-OFS15E) from Shanghai Bian Sensing Technology Co., Ltd. and the like. For another example, the layout of the internal strain monitoring device 33 on the pavement can be as follows: after the construction of the upper base is completed, the internal strain monitoring device 33 on the pavement that needs to be laid is bound to the steel support, and the top surface of the base is drilled to install the steel support. Before the panel is poured, lead the communication fiber out of the shoulder.

The intelligent runway provided by the present invention may include a road surface internal temperature monitoring device 34, and the road surface internal temperature monitoring device 34 may be used to monitor the internal temperature of the road surface structure. The temperature monitoring devices 34 inside the road surface can be located in the layer 11 of the road surface, and the number of the temperature monitoring devices 34 inside the road surface can be one or more, and the distribution method is usually point distribution. When the number of the temperature monitoring devices 34 inside the road surface is When there are more than one, the horizontal distance between the temperature monitoring devices 34 inside each road surface is usually ≥5cm, and the vertical distance is usually ≥5cm. Appropriate devices that can be used as the interior temperature monitoring device 34 of the pavement and how to arrange them should be known to those skilled in the art. For example, the temperature monitoring device 34 inside the pavement can generally be an optical signal sensor, etc., specifically a temperature sensor, etc., more specifically, a temperature sensor (BA-OFT10) of Shanghai Baian Sensing Technology Co., Ltd. and the like. For another example, the layout of the road surface internal temperature monitoring device 34 may be as follows: after the construction of the upper base layer is completed, the road surface internal temperature monitoring device 34 that needs to be installed is bound to the steel support; Before the panel is poured, lead the communication fiber out of the shoulder.

In the intelligent runway provided by the present invention, a pavement instantaneous deflection monitoring device 35 may be included, and the pavement instantaneous deflection monitoring device 35 may be used to monitor the instantaneous deflection value of the pavement structure. The pavement instantaneous deflection monitoring device 35 may be located in the 11th floor of the pavement panel, and the number of the pavement instantaneous deflection monitoring device 35 may be one or more, and the distribution method is usually point distribution. When the pavement instantaneous deflection monitoring device 35 When there are more than one, the distance between the instantaneous deflection monitoring devices 35 of each road surface is usually ≥0.5m. Appropriate devices that can be used as the instantaneous pavement deflection monitoring device 35 and their arrangement should be known to those skilled in the art. For example, the pavement instantaneous deflection monitoring device 35 can generally be an optical signal sensor, etc., specifically an acceleration sensor, etc., more specifically an accelerometer (BA-MA10) of Shanghai Baian Sensing Technology Co., Ltd., and the like. For another example, the layout of the pavement instantaneous deflection monitoring device 35 can be as follows: after the construction of the upper base is completed, the pavement instantaneous deflection monitoring device 35 that needs to be laid is bound to the steel support, and the top surface of the base is drilled to install and place the steel support. , Before the road panel is poured, the communication optical fiber is led out of the road shoulder.

The intelligent runway provided by the present invention may include an aircraft wheel track monitoring device 36, and the aircraft wheel track monitoring device 36 may be used to monitor the lateral distribution of the aircraft wheel track. The aircraft track monitoring device 36 may be located at the edge of the airport runway body 1 . Suitable devices that can be used as the aircraft track monitoring device 36 and how they are arranged should be known to those skilled in the art. For example, the aircraft wheel track monitoring device 36 may generally be an optical signal sensor, etc., specifically a laser wheel tracker, etc., more specifically, a laser wheel tracker (BA-MDD500) of Shanghai Baian Sensing Technology Co., Ltd. and the like. For another example, the layout of the aircraft wheel track monitoring device 36 can be as follows: a concrete fixing platform or hardened ground is set at the deployment point, and the height can usually be about 60cm higher than the road surface, and the aircraft wheel track monitoring device 36 is fixed outside the road surface. On the soil surface area, connect the cable from the gliding platform (input voltage can be AC220V), and supply power to the aircraft track monitoring device 36 through the transformer next to the sensor (output voltage can be DC12V, power 5W).

In the intelligent runway provided by the present invention, a road surface water film monitoring device 37 may be included, and the road surface water film monitoring device 37 may be used to monitor the coverage of the road surface water film. The road surface water film monitoring device 37 can be located in the layer 11 of the road surface, and the number of the road surface water film monitoring device 37 can be one or more, and the distribution method is usually point distribution. When the number of road surface water film monitoring devices 37 is: When there are more than one, the distance between the water film monitoring devices 37 on each road surface is usually ≥0.5m. Suitable devices that can be used as the pavement water film monitoring device 37 and their arrangement should be known to those skilled in the art. For example, the pavement water film monitoring device 37 can generally be an optical signal sensor, etc., specifically a water film thickness sensor, etc., more specifically a water film thickness sensor (BA-FPP25) from Shanghai Bian Sensing Technology Co., Ltd., etc. For another example, the layout of the road surface water film monitoring device 37 may be as follows: using a navigation aid lighting fixture for packaging, and laying the road surface water film monitoring device 37 according to the installation method of the navigation aid lighting fixture.

The intelligent runway provided by the present invention may include a road surface ice and snow coverage monitoring device 38, and the road surface ice and snow coverage monitoring device 38 may be used to monitor the road surface ice and snow coverage. The road surface snow and ice monitoring device 38 may be located in the layer 11 of the road surface, and the number of the road surface snow and ice monitoring device 38 may be one or more, and the distribution method is usually point distribution. , the distance between the snow and ice monitoring devices 38 on each road surface is usually ≥0.5m. Appropriate devices that can be used as pavement snow cover monitoring device 38 and how to deploy them should be known to those skilled in the art. For example, the road surface ice and snow coverage monitoring device 38 can generally be an optical signal sensor, etc., specifically an ice and snow sensor, etc., more specifically, a road surface sensor (DRS511) from Vaisala, Finland, and the like. For another example, the road surface snow and ice coverage monitoring device 38 may be arranged as follows: use the navigation aid lighting fixtures for packaging, and install the road surface snow and ice coverage monitoring device 38 according to the installation method of the navigation aid lighting fixtures.

In the intelligent runway provided by the present invention, a data storage module 4 may be included to store the data collected and obtained by the foundation settlement sensing module 2 and the road surface character sensing module 3 . The data collected by the foundation settlement perception module 2 and the pavement profile perception module 3 can also be used for data analysis. For example, the foundation settlement data storage device 41 may provide the foundation settlement data of the whole pavement surface according to the single-point settlement data, the layered settlement data, the pressure difference settlement data, and the local foundation strain data. For another example, the foundation moisture content data storage device 42 may provide the soil-water relationship according to the humidity data and the substrate suction data. For another example, the board bottom contact state data storage device 43 may provide the board bottom void state according to the pressure data on the surface of the base layer and the pressure data on the middle of the base layer. For another example, the pavement mechanical response data storage device 44 may provide the mechanical response of the pavement structure according to the pavement internal strain data, the pavement internal temperature data, the pavement instantaneous deflection data, and the aircraft wheel track data. For another example, the road surface wet state data storage device 45 may provide the road surface wet state according to the road surface water film data and the road surface ice and snow coverage data.

In the smart runway provided by the present invention, the data storage module 4 or its components (for example, the foundation settlement data storage device 41 , the foundation moisture content data storage device 42 , the slab bottom contact condition data storage device 43 , the pavement mechanical response data The storage device 44 and the road surface slippery state data storage device 45) may be a single chip computer, a computer, or the like. Appropriate methods for connecting the components in the data storage module 4 with the components in the foundation settlement sensing module 2 and the pavement shape sensing module 3 should be known to those skilled in the art. For example, the foundation settlement data storage device 41 can be signal-connected to the single-point settlement measurement device 21, the layered settlement measurement device 22, the differential pressure settlement measurement device 23, and the foundation local strain monitoring device 24 through the branch optical cable and the main optical fiber cable, respectively. Generally, it is a single-core armored optical cable, or an armored optical cable with no more than 8 cores. It is used to transmit the data of the optical signal sensor. One end is connected to the optical signal sensor. The main cable is spliced. The main optical fiber cable is generally a 4-core to 64-core optical fiber armored main cable, which is used to collect and transmit the data of the optical signal sensor. One end is connected to the branch optical cable, and the other end is extended to the data storage module 4 through the cable tube. . For another example, the ground moisture content data storage device 42 can be signal-connected to the humidity measuring device 25 and the substrate suction measuring device 26 through a multi-core cable and a wireless transmission device, respectively. The multi-core cable is generally a 3-core to 6-core cable for transmission. For the data of the electrical signal sensor, one end is connected to the electrical signal sensor, and the other end is connected to the wireless transmission device, so that a signal connection can be formed with the data storage module 4 . For another example, the board bottom contact condition data storage device 43 may be signally connected to the base surface point pressure monitoring device 31 and the base layer surface distributed pressure monitoring device 32 through branch optical cables and optical fiber main cables, respectively. For another example, the pavement mechanical response data storage device 44 can be connected to the pavement internal strain monitoring device 33, the pavement internal temperature monitoring device 34, the pavement instantaneous deflection monitoring device 35 and the aircraft wheel track monitoring device through the branch optical cable and the main optical fiber cable, respectively. The device 36 is signally connected. For another example, the road surface wet state data storage device 45 may be signal-connected to the road surface water film monitoring device 37 and the road surface ice and snow coverage monitoring device 38 through a branch optical cable and an optical fiber main cable, respectively.

The smart runway provided by the present invention may further include a risk assessment module 5, and the risk assessment module 5 may include: a foundation settlement risk assessment device 51 for evaluating the foundation according to the foundation settlement data of the entire road surface and the relationship between soil and water Subsidence risk. The foundation subsidence risk assessment module 51 may be connected in signal with the foundation subsidence data storage device 41 and the foundation water content data storage device 42 . The foundation settlement risk assessment device 51 may be a single chip computer, a computer, or the like. By inputting the monitoring data of the foundation settlement perception module 2, the evaluation of the foundation settlement risk can be output according to the existing codes and standards (for example, the Civil Airport Geotechnical Engineering Design Code (MHT5027-2013) Section 4.2, etc.).

The smart runway provided by the present invention may further include a risk assessment module 5, and the risk assessment module 5 may include: a bottom void risk assessment device 52 for evaluating the bottom void risk according to the void status of the deck bottom . The board bottom void risk assessment module 52 may be signally connected to the board bottom contact condition data storage device 43 . The device 52 for evaluating the risk of voiding the bottom of the board may be a single chip computer, a computer, or the like. By inputting the monitoring data of the surface point pressure monitoring device 31 and the surface distributed pressure monitoring device 32, according to the existing norms and standards (for example, Civil Airport Pavement Evaluation Management Technical Specifications (MH/T5024-2019) Section 7.4 content, etc.), the evaluation of the risk of voiding at the bottom of the board can be output.

The intelligent runway provided by the present invention may further include a risk assessment module 5, and the risk assessment module 5 may include: a pavement fracture risk assessment device 53 for assessing the pavement fracture risk according to the mechanical response of the pavement structure. The pavement fracture risk assessment module 53 may be in signal connection with the pavement mechanical response data storage device 44 . The pavement fracture risk assessment device 53 may be a single chip computer, a computer, or the like. Through the input monitoring data of the pavement internal strain monitoring device 33, the pavement internal temperature monitoring device 34, the pavement instantaneous deflection monitoring device 35, and the aircraft wheel track monitoring device 37, according to existing specifications and standards (for example, civil airport roads According to Section 7.4 of the Technical Specification for Surface Evaluation Management (MH/T5024-2019) and Appendix D, etc.), the evaluation of the fracture risk of the pavement can be output.

The smart runway provided by the present invention may further include a risk assessment module 5, and the risk assessment module 5 may include: an aircraft hydroplaning risk assessment device 54 for assessing the aircraft hydroplaning risk according to the wet and slippery state of the road surface. The aircraft hydroplaning risk assessment module may be signally connected to the data storage device 45 for the wet state of the road surface. The aircraft hydroplaning risk assessment device 54 may be a single chip computer, a computer, or the like. By inputting the monitoring data of the road surface water film monitoring device 37 and the road surface ice and snow coverage monitoring device 38, according to the existing specifications and standards (for example, the technical standards for civil airport flight areas (MH5001-2013), etc.) Assessment of water risks.

A second aspect of the present invention provides an airport pavement information monitoring method, which monitors airport pavement information through the intelligent runway provided in the first aspect of the present invention. Specifically, the method may include:

3) According to single-point settlement data, layered settlement data, differential pressure settlement data, and local foundation strain data, provide the foundation settlement data of the entire pavement surface;

7) According to the pavement water film data and pavement ice and snow coverage data, provide the slippery state of the pavement. As mentioned above, through the above-mentioned smart runway, single-point settlement data, layered settlement data, differential pressure settlement data, local foundation strain data, humidity data and matrix suction data can be provided through the foundation settlement sensing module 2, and the road surface properties can be Perception module 3 provides data on the surface pressure of the base, the pressure in the middle of the base, the internal strain data of the pavement, the internal temperature of the pavement, the instantaneous deflection of the pavement, the wheel track data of the aircraft, the data of the water film of the pavement, and the ice and snow cover of the pavement. The data can be sent to the data storage module 4. Through further analysis of the relevant data, real-time monitoring and timely decision-making can be realized for the risk of foundation settlement, the risk of voiding at the bottom of the slab, the risk of road surface fracture, and the risk of aircraft hydroplaning. , in the event of an accident, it can give early warning in time, and can actively determine the maintenance plan.

The method for monitoring airport pavement information provided by the present invention may include: providing single-point settlement data, layered settlement data, differential pressure settlement data, local foundation strain data, humidity data and matrix suction data. The single-point subsidence data is the absolute subsidence value of a single point to be monitored by the airport runway body 1 . The layered subsidence data is the absolute subsidence value of the different layers corresponding to the single point (for example, the single point monitored by the single-point subsidence measurement device 21 ) to be monitored by the airport runway body 1 in the direction of gravity, and the differential pressure subsidence data is The relative subsidence value between each point in the horizontal direction of the airport runway body 1 (for example, relative to the relative subsidence value of a single point monitored by the single-point subsidence measurement device 21 ), the local foundation strain data, that is, the measurement of the local foundation strain distribution As a result, the humidity data is the specific measurement result of the foundation soil moisture, and the matrix suction data is the specific measurement result of the foundation soil matrix suction.

The method for monitoring airport pavement information provided by the present invention may include: providing pressure data on the surface of the base, pressure data in the middle of the base, strain data inside the pavement, temperature data inside the pavement, instantaneous deflection data of the pavement, and aircraft wheel track. data, pavement water film data and pavement snow cover data. The pressure data on the surface of the base layer is the pressure value of the road panel 11 on the base layer 12 (the surface position of the upper base layer), the pressure data in the middle of the base layer is the pressure value of the road panel 11 on the base layer 12 (the position between the upper base layer and the lower base layer), The internal strain data of the pavement is the internal strain value of the pavement structure, the internal temperature data of the pavement is the internal temperature of the pavement structure, the instantaneous deflection data of the pavement is the instantaneous deflection value of the pavement structure, and the wheel track data of the aircraft is the wheel track of the pavement. The results of the lateral distribution of the track, the water film data on the road surface is the water film coverage on the road surface, and the ice and snow coverage data on the road surface is the monitoring road surface snow and ice coverage.

The method for monitoring airport pavement information provided by the present invention may include: providing foundation subsidence data of the entire pavement according to single-point subsidence data, layered subsidence data, differential pressure subsidence data, and local foundation strain data. Compare single-point absolute settlement data (eg, data provided by single-point settlement measurement device 21 and layered settlement measurement device 22 ) with multi-point relative settlement data (eg, data provided by differential pressure settlement measurement device 23 ) In combination, absolute settlement data of multiple points (eg, the points where each differential pressure settlement measuring device 23 is located) can be obtained, and with the monitoring of the local foundation strain monitoring device 24, the ground settlement of the entire runway can be obtained. In a specific embodiment of the present invention, the specific method for providing the foundation settlement data of the entire pavement is as follows: based on the data of the single-point settlement measurement device 21 and the layered settlement measurement device 22, several points (for example, a single point The absolute settlement of the position of the settlement measurement device 21 and the position of each layered settlement measurement device 22); based on the differential pressure settlement measurement device 23 and the foundation local strain monitoring device 24, the global relative settlement can be calculated; the combination of the two data, The global absolute settlement can be obtained.

In the above airport pavement information monitoring method, the calculation method of the global absolute settlement may include:

According to the monitoring result ε(x) of the foundation local strain monitoring device 24, the estimated actual strain is obtained by calculating the formula (1).

in,

is the average strain, that is, the average value of each ε(x);

ε(x) is the difference between the strain amount of the metal-based cable and the strain amount of the temperature-compensated cable, ε(x) is the actual strain measurement result of the optical fiber, in which the strain amount of the optical fiber caused by the temperature change is removed, x ∈[0,l], l is the fiber length of the test section;

α is the strain reduction coefficient, which characterizes the degree of fiber relaxation;

β is the standard deviation coefficient, which characterizes the internal strain redistribution of the fiber;

According to the formula (2) to determine the maximum settlement position, the zero point x= _x0 of the function Y(x) is the maximum settlement position, because for the maximum settlement position _x0 , the strain variable is between 0~ _x0 and _x0 ~l. The values obtained by integrating within each segment should be basically the same:

in,

If a point on the fiber undergoes vertical displacement, as shown in Figure 3, set the position coordinate of point A as x, take the micro-element dx on the fiber, and the original fiber AB segment is deformed into A'B' segment, so according to the Pythagorean theorem and strain definition, the vertical displacement y(x) of each point is the integral of y′(x) from the end point to this point. According to the most unfavorable settlement, the formulas (3) and formulas can be obtained in the unidirectional deformation region (4);

Calculate the estimated displacement according to formula (5)

Estimated displacement

It can represent the relative settlement of each point of the airport road foundation in the extension direction of the airport road foundation settlement monitoring system.

In the above calculation method, α is related to the properties of the optical fiber and the state it is in, and the value of α of the used optical fiber can usually be obtained through pre-experimental measurement. The strain reduction coefficient α can be obtained by measuring the ratio of the total fiber elongation Δl _ε calculated based on the measured data to the actual fiber total elongation Δl, so as to characterize the degree of fiber relaxation. In the laboratory in advance, the two ends of the optical cable used in the monitoring system can be fixed, suspended in the middle, and a known deformation can be applied to it. Calculate the total elongation Δl _ε of the optical fiber, and at the same time, monitor the actual total elongation Δl of the optical fiber, so as to calculate and obtain the strain reduction coefficient α of the optical fiber. Then, in the calculation of specific engineering monitoring, the value of the strain reduction coefficient α can be used. The value of the strain reduction coefficient α can usually be 0.9-1.0, 0.9-0.92, 0.92-0.94, 0.94-0.96, 0.96-0.98, or 0.98-1.0.

In the above calculation method, β is related to the properties of the fiber itself and the state it is in, and the value of β of the used fiber can usually be obtained by pre-experimental measurement. The standard deviation coefficient β is calculated and obtained by formula (6):

In the laboratory, the optical cable used in the monitoring system can be fixed at both ends, suspended in the middle, and a known deformation is applied to it, and the strain of the optical fiber is measured by the BOTDR distributed sensor connected to the optical fiber, according to (3) formula, select the β that minimizes the calculated deformation error as the β value of this kind of fiber. Then in the calculation of specific project monitoring, the β value can be used. The value of the standard deviation coefficient β can usually be 0.2-1.0, 0.2-0.4, 0.4-0.6, 0.6-0.8, or 0.8-1.0.

Further, the overall settlement distance of the airport roadbed can be obtained according to the sum of the relative settlement distance and the absolute settlement distance. The relative settlement distance is the relative settlement distance of the measurement point in the airport road base relative to the airport road base itself. The relative settlement distance can be estimated according to the displacement as described above.

Calculated and obtained, according to the relative settlement distance of the obtained measurement point relative to the airport road base itself, plus the overall settlement distance of the airport road base itself, the actual settlement of the measurement point relative to the original road surface can be calculated and obtained. distance. The overall settlement distance of the airport runway itself can be obtained by measuring the single-point settlement measuring instrument and the overall settlement measuring instrument. For example, the settlement distance of the airport road base itself at a specific measurement point can be obtained by a single-point subsidence measuring instrument, and the relative difference values of all parts of the airport road base with respect to the above-mentioned specific measurement points can be obtained according to the overall settlement measuring instrument, so as to determine the airport runway base itself. The overall settlement distance of the Daoji itself, that is, the global absolute settlement.

The risk of foundation settlement can then be assessed against existing codes and standards (eg, Code for Geotechnical Design of Civil Airports (MHT 5027-2013) Section 4.2, etc.).

In a specific embodiment of the present invention, a metal-based cable-shaped optical cable (supplied by Suzhou Nanzhi, model NZS-DTS-C08) is used to monitor the settlement distribution of the subgrade soil, and a high-strength steel wire armored optical cable (supplied by Suzhou Nanzhi) is used. , model NZS-DTS-C08) to compensate for temperature changes, as a temperature compensation optical cable, with high-precision intelligent subsidence instrument to assist monitoring and verification data, using a single-point subsidence measuring instrument as a single-point subsidence measurement device 21, supplied by Suzhou Nanzhi , the model is NZS-FBG-DS (1), and the intelligent settlement meter is used as the differential pressure settlement measuring device 23 (ie, the overall settlement measuring instrument) supplied by Suzhou Nanzhi, and the model is NZS-FBG-HD.

First carry out the calibration test, and use the FTB 2505 distributed optical fiber demodulator to analyze the correlation between the optical fiber strain and the vertical displacement and the vertical displacement position: (1) Fix the deformation application position, and adjust the size of the deformation; (2) Fix the Deformation amount, adjust the deformation application position. Refer to Fig. 4 for a schematic diagram of the analytical relationship between optical fiber strain and vertical displacement based on the calibration test. Intuitively analyzing the results, it can be seen that the greater the total deformation length of the fiber, the greater the fiber strain, which is in line with engineering experience. Substitute the test results ε(x) and calibration parameters

According to operator S:

The inverse settlements are shown in Fig. 5, respectively. It can be seen that the relative error between the analytical value of the deformation amount and the length of the optical fiber is less than 0.5%, and the engineering feasibility and applicability are good.

When grooving and burying distributed optical fibers on site, first fill the road foundation to the specified elevation, and level and clean the site, and excavate hard objects such as massive gravel, plant roots and stems. Lay a layer of fine sand with a thickness of about 5cm at the bottom of the trench, straighten and taut the distributed optical fiber, cover it with a corrugated pipe for protection, and then backfill 40cm of fine sand, and backfill the original soil to remove the crushed stone, and check the optical fiber path and analysis. The length of the distributed optical fiber is determined according to actual needs, and generally covers the entire airport runway. Taking into account the calibration accuracy and engineering cost, generally a single-point settlement measuring instrument or an integral settlement measuring instrument is arranged every 20-40m. The distance between the settlement measuring instrument or the overall settlement measuring instrument and the distributed optical fiber at the corresponding point shall not exceed 30 cm, and the distance between the temperature compensation optical cable and the metal-based cable-shaped optical cable shall not exceed 5 cm. Access the fiber demodulator.

Subtract the strain data of the high-strength steel wire armored optical cable at the same position from the strain data of the metal-based cable-shaped optical cable to obtain the monitoring data of the subgrade settlement after temperature compensation. Refer to Figure 6. According to the strain situation of the distributed optical fiber at each monitoring point displayed by the monitoring data, and using the above-mentioned method for monitoring the settlement of the airport road foundation based on the burial of the distributed optical fiber, the soil foundation at the monitoring point can be calculated from the lateral strain of the distributed optical fiber. The vertical deformation (ie settlement) of the subgrade soil obtained from this is the relative settlement between the monitoring points of the distributed optical fiber. Referring to the monitoring data and correction results of subgrade settlement in Figure 7, the black line The interval between the upper measuring points is 0.04m. According to the measurement data of the high-precision integral settlement measuring instrument 23 and single-point settlement measuring instrument 24, as shown by the blue dots, the absolute settlements from left to right are 29.2312mm, 23.0720mm, 16.6855mm and 10.4307mm, respectively. The distribution of the corresponding positions is calibrated. According to the relative settlement between the monitoring points of the distributed optical fiber, the real settlement of all subgrade soils within the coverage of the distributed optical fiber can be obtained, as shown by the red line, and the runway can be calculated. Differential settlement between different regions. Taking the monitoring data of 2018.10.26 in the subgrade settlement monitoring data as an example, the relative settlement calculated from the distributed optical fiber strain data and the real settlement corrected with the data of the single-point/overall settlement measuring instrument refer to the subgrade settlement in Figure 7. Monitoring data and correction results.

The method for monitoring airport pavement information provided by the present invention may include: providing a soil-water relationship according to humidity data and substrate suction data. According to humidity data and matrix suction data, the moisture content characteristics of the foundation soil can be obtained to provide the soil-water relationship. For example, the soil-water characteristic curve can be drawn, that is, the relationship between soil moisture content and soil matrix suction, which can be used to analyze settlement. reason.

The method for monitoring airport pavement information provided by the present invention may include: providing the empty state of the bottom of the board according to the pressure bearing data of the surface of the base layer and the pressure bearing data of the middle of the base layer. According to the pressure data of the surface of the base layer, the pressure data of the middle of the base layer, and the changes of the sensor data, it is possible to qualitatively judge whether there is a void in the bottom of the slab, so as to determine the void state of the bottom of the slab. Chen Hui, Ling Jianming. A method for identifying voids in the bottom of concrete pavement based on vibration perception [J]. Chinese Journal of Highways, 2020, 33(03): 42-52.).

The method for monitoring airport pavement information provided by the present invention may include: providing the mechanical response of the pavement structure according to the pavement internal strain data, the pavement internal temperature data, the pavement instantaneous deflection data, and the aircraft wheel track data. According to the internal strain data of the pavement, the internal temperature data of the pavement, the instantaneous deflection data of the pavement, the data of the aircraft wheel track, and based on the existing mechanical model, the mechanical response results of the pavement structure can be obtained. For the specific mechanical model, please refer to Yan Kezhen. Elasticity Research on Dynamic Response of Thin Plate on Foundation [D]. Hangzhou: Zhejiang University, 2005.

The method for monitoring airport pavement information provided by the present invention may include: providing the wet and slippery state of the pavement according to the pavement water film data and the pavement ice and snow coverage data. According to the pavement water film data and pavement ice and snow coverage data, the method of physical quantity conversion can be used to obtain the wet and slippery state of the pavement. For the specific physical quantity conversion method, please refer to Cao Jianfeng. Behavior Analysis [D]. Shanghai: Tongji University, 2005.

The method for monitoring airport pavement information provided by the present invention may include: evaluating the subsidence risk of the foundation according to the foundation subsidence data of the whole pavement and the relationship between soil and water. According to the foundation settlement data of the whole pavement and the relationship between soil and water, perform regression analysis on the foundation settlement of the whole runway, calculate the foundation settlement rate and the uneven settlement coefficient, according to the existing codes and standards (for example, civil airport geotechnical engineering design code (MHT 5027-2013) Section 4.2, etc.), the risk of foundation settlement can be determined.

The method for monitoring airport pavement information provided by the present invention may include: evaluating the voiding risk of the bottom of the slab according to the voiding state of the bottom of the slab. According to the voiding state of the bottom of the slab, through the occurrence position and proportion of voiding of the bottom of the slab, according to the existing norms and standards (for example, the technical specifications for the management of civil airport pavement evaluation (MH/T5024-2019) Section 7.4, etc.), Determine the risk of voiding at the bottom of the board.

The method for monitoring airport pavement information provided by the present invention may include: evaluating the pavement fracture risk according to the mechanical response of the pavement structure. According to the mechanical response of the pavement structure, compare the theoretical structural mechanical response with the actual monitoring mechanical response of the sensor to evaluate the fracture risk of the pavement. For the specific evaluation method, please refer to Ma X, Dong Z, Yu X, et al.Monitoring the structural capacity of airfield pavement with built-in sensors and modulus back-calculation algorithm[J]. Construction and Building Materials, 2018, 175(JUN.30):552-561.

The method for monitoring airport pavement information provided by the present invention may include: evaluating the risk of aircraft hydroplaning according to the wet and slippery state of the pavement. According to the wet-slip state of the pavement and the fluid mechanics model, compare the actual monitoring of the wet-slip state of the pavement surface and the safety threshold of the aircraft to determine the current aircraft hydroplaning risk. For the specific calculation method, please refer to Cao Jianfeng. Analysis of roller water skiing behavior based on film thickness perception [D]. Shanghai: Tongji University, 2005.

A third aspect of the present invention provides a computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps of the method for monitoring airport pavement information provided in the second aspect of the present invention.

A fourth aspect of the present invention provides an apparatus, comprising: a processor and a memory, wherein the memory is used for storing a computer program, and the processor is used for executing the computer program stored in the memory, so that the apparatus executes the second embodiment of the present invention The steps of the airport pavement information monitoring method provided by the aspect.

The intelligent runway and method provided by the present invention have automatic, autonomous and intelligent perception and analysis capabilities for runway operation and maintenance, and can detect the risk of foundation settlement, the risk of emptying the bottom of the slab, the risk of road surface fracture, and the risk of aircraft hydroplaning. Real-time monitoring, timely decision-making, timely warning when accidents occur, and can actively determine maintenance and management plans, which can realize unmanned management, and can effectively promote the realization of the safe operation goal of "zero labor, zero accidents, and zero delays". Good industrialization prospects.

To sum up, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

The above-mentioned embodiments merely illustrate the principles and effects of the present invention, but are not intended to limit the present invention. Anyone skilled in the art can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical idea disclosed in the present invention should still be covered by the claims of the present invention.

Claims

An intelligent runway, characterized in that it comprises an airport runway body (1), the airport runway body (1) including a road panel (11), a base layer (12) and a foundation (13) in sequence from top to bottom, the airport runway body (1) The runway body (1) is provided with a foundation settlement sensing module (2) and a road surface profile sensing module (3);

The foundation settlement sensing module (2) includes a single-point settlement measurement device (21), a layered settlement measurement device (22), a pressure differential settlement measurement device (23), a foundation local strain monitoring device (24), and a humidity measurement device ( 25) and a substrate suction measuring device (26);

The pavement profile perception module (3) includes a base-level surface point pressure monitoring device (31), a base-level surface distributed pressure monitoring device (32), a pavement internal strain monitoring device (33), and a pavement internal temperature monitoring device a device (34), a pavement surface instantaneous deflection monitoring device (35), an aircraft wheel track monitoring device (36), a pavement surface water film monitoring device (37), and a pavement surface ice and snow coverage monitoring device (38);

Also includes a data storage module (4), the data storage module (4) includes a foundation settlement data storage device (41), a foundation moisture content data storage device (42), a slab bottom contact condition data storage device (43), a road surface a mechanical response data storage device (44) and a road surface slippery state data storage device (45);

The foundation settlement data storage device (41) is respectively signal-connected with a single-point settlement measurement device (21), a layered settlement measurement device (22), a differential pressure settlement measurement device (23) and a foundation local strain monitoring device (24);

The ground moisture content data storage device (42) is signal-connected to the humidity measurement device (25) and the substrate suction measurement device (26), respectively;

The plate bottom contact condition data storage device (43) is signal-connected to a point pressure monitoring device (31) on the surface of the base layer and a distributed pressure monitoring device (32) on the surface of the base layer;

The pavement mechanical response data storage device (44) is respectively connected with a pavement internal strain monitoring device (33), a pavement internal temperature monitoring device (34), a pavement instantaneous deflection monitoring device (35) and an aircraft wheel track monitoring device (36) Signal connection;

The road surface wet and slippery state data storage device (45) is signal-connected to a road surface water film monitoring device (37) and a road surface ice and snow coverage monitoring device (38), respectively.
The smart track according to claim 1, characterized in that, the thickness of the track panel (11) is ≥ 20cm;

And/or, the thickness of the base layer (12) is greater than or equal to 15 cm.
The smart runway according to claim 1, characterized in that the single-point settlement measuring device (21) is located in the foundation (13) layer, and the single-point settlement measuring device (21) has a depth greater than that of the bearing layer Depth, the number of the single-point settlement measurement devices (21) is one or more, when the number of single-point settlement measurement devices (21) is multiple, the spacing between the single-point settlement measurement devices (21) ≥ 5m;

And/or, the layered settlement measurement device (22) is located in the foundation (13) layer, the number of the layered settlement measurement device (22) is multiple, and the gravity of the single-point settlement measurement device (21) Evenly distributed in the direction, the spacing between each of the layered settlement measuring devices (22) is ≥5m;

And/or, the pressure differential settlement measuring device (23) is located in the foundation (13) layer, and the pressure differential settlement measuring device (23) is multiple in number and uniformly distributed along the extension direction of the airport runway body (1). , the distance between each differential pressure settlement measuring device (23) is 5m～40m;

And/or, the local foundation strain monitoring device (24) is located in the foundation (13) layer, and the foundation local strain monitoring device (24) is distributed along the extension direction of the airport runway body (1).
The smart runway according to claim 1, characterized in that, the humidity measuring device (25) is located in the foundation (13) layer, and the number of the humidity measuring device (25) is one or more, when the humidity When the number of measuring devices (25) is multiple, the distance between the humidity measuring devices (25) is ≥10m;

And/or, the substrate suction measuring device (26) is located in the foundation (13) layer, and the number of the substrate suction measuring device (26) is one or more, when the number of the substrate suction measuring device (26) is many When each of the substrate suction measurement devices (26) is at least 10m apart.
The smart runway according to claim 1, characterized in that, the point-type pressure monitoring devices (31) on the surface of the base layer are located in the layer of the base layer (12), and the number of the point-type pressure monitoring devices (31) on the surface of the base layer is is one or more, and when the number of point pressure monitoring devices (31) on the surface of the base layer is multiple, the distance between the point pressure monitoring devices (31) on the surface of each base layer is ≥0.2m;

And/or, the distributed pressure monitoring devices (32) on the base layer surface are located in the base layer (12) layer, and are evenly distributed along the extension direction of the airport runway body (1) and perpendicular to the extension direction of the airport runway body (1).
An intelligent runway according to claim 1, characterized in that, the track surface internal strain monitoring device (33) is located in the track deck (11) layer, and the number of the track surface internal strain monitoring device (33) is one or more , when the number of the internal strain monitoring devices (33) in the pavement is multiple, the spacing between the internal strain monitoring devices (33) in each pavement is ≥0.5m;

And/or, the temperature monitoring device (34) inside the road surface is located in the layer of the road surface (11), and is distributed in layers in the direction of gravity of the temperature monitoring device (34) inside the road surface. When the number is more than one, the horizontal spacing of the internal temperature monitoring devices (34) of each road surface is ≥0.5m, and the vertical spacing is ≥5cm;

And/or, the road surface instantaneous deflection monitoring device (35) is located in the road surface (11) layer, and the number of the road surface instantaneous deflection monitoring device (35) is one or more, when the road surface instantaneous deflection monitoring device (35) ) is more than one, the spacing between the instantaneous deflection monitoring devices (35) of each pavement surface is ≥0.5m;

And/or, the aircraft wheel track monitoring device (36) is located at the edge of the airport runway body (1);

And/or, the road surface water film monitoring device (37) is located in the layer of the road panel (11), the number of the road surface water film monitoring device (37) is one or more, when the number of road surface water film monitoring devices (37) When there are more than one, the distance between the water film monitoring devices (37) on each road surface is ≥0.5m;

And/or, the road surface snow and ice coverage monitoring device (38) is located in the layer of the road surface (11), and the number of the road surface snow and ice coverage monitoring devices (38) is one or more, when the number of road surface snow and ice coverage monitoring devices (38) When there are more than one, the distance between the monitoring devices (38) for ice and snow coverage on each road surface is ≥0.5m.
An intelligent runway according to claim 1, characterized in that, the intelligent runway further comprises a risk assessment module (5), and the risk assessment module (5) comprises:

A foundation settlement risk assessment device (51), used for assessing the foundation settlement risk according to the foundation settlement data of the entire pavement and the relationship between soil and water, and the foundation settlement risk assessment module is connected to a signal;

a bottom void risk assessment device (52), used for evaluating the bottom void risk according to the void state of the bottom plate, and the bottom void risk assessment module is connected to a signal;

a pavement fracture risk evaluation device (53), used for evaluating the pavement fracture risk according to the mechanical response of the pavement structure, and the pavement fracture risk evaluation module is connected with a signal;

An aircraft hydroplaning risk assessment device (54) is used for assessing the aircraft hydroplaning risk according to the wet state of the road surface, and the aircraft hydroplaning risk assessment module is connected with a signal.
A method for monitoring airport pavement information, monitoring the airport pavement information through the intelligent runway according to any one of claims 1 to 7.
A kind of airport road surface information monitoring method as claimed in claim 8, is characterized in that, comprises:

1) Provide single-point settlement data, layered settlement data, differential pressure settlement data, local foundation strain data, humidity data and matrix suction data;

2) Provide base surface pressure data, base middle pressure data, pavement internal strain data, pavement internal temperature data, pavement instantaneous deflection data, aircraft wheel track data, pavement water film data and pavement snow and ice coverage data ;

3) According to single-point settlement data, layered settlement data, differential pressure settlement data, and local foundation strain data, provide the foundation settlement data of the entire pavement surface;

4) Provide soil-water relationship according to humidity data and substrate suction data;

5) According to the pressure data on the surface of the base layer and the pressure data in the middle of the base layer, the empty state of the bottom of the board is provided;

6) According to the internal strain data of the pavement, the internal temperature data of the pavement, the instantaneous deflection data of the pavement, and the data of the aircraft wheel track, the mechanical response of the pavement structure is provided;

7) According to the pavement water film data and pavement ice and snow coverage data, provide the slippery state of the pavement.
A kind of airport road surface information monitoring method as claimed in claim 9, is characterized in that, also comprises:

8) According to the foundation settlement data of the whole pavement and the relationship between soil and water, evaluate the risk of foundation settlement;

9) According to the empty state of the bottom of the plate, evaluate the risk of emptying of the bottom of the plate;

10) According to the mechanical response of the pavement structure, evaluate the fracture risk of the pavement;

11) According to the wet and slippery state of the pavement, evaluate the risk of aquaplaning of the aircraft.