阅读说明：本技术 一种水泥混凝土道面早期变形监测结构和方法 (Cement concrete pavement early deformation monitoring structure and method ) 是由 张家科 王警辉 凌建明 李一凡 金辰 石蓉 于 2021-08-11 设计创作，主要内容包括：本发明涉及道路工程领域,特别是涉及一种水泥混凝土道面早期变形监测结构和方法,所述水泥混凝土道面早期变形监测结构包括道面本体,所述道面本体包括面层、基层、以及位于面层的道面切缝,多个所述三轴位移监测装置均匀间隔,所述三轴位移监测装置的XY面设于面层和基层交界处所在的平面上,所述三轴位移监测装置至少部分设于道面主体的外侧。本发明所提供的水泥混凝土道面早期变形监测结构和方法,可以实时监测水泥混凝土道面在运营初期阶段的变形情况,及时监测出道面运营初期阶段变形过度可能造成的道面结构性破坏和存在的安全隐患,起到防患未然的作用。(The invention relates to the field of road engineering, in particular to a cement concrete pavement early deformation monitoring structure and a method. The cement concrete pavement early deformation monitoring structure and method provided by the invention can monitor the deformation condition of the cement concrete pavement in the initial operation stage in real time, timely monitor the pavement structural damage and potential safety hazard possibly caused by excessive deformation of the pavement in the initial operation stage, and play a role in preventing accidents.)

1. The utility model provides a cement concrete pavement early deformation monitoring structure, a serial communication port, cement concrete pavement early deformation monitoring structure includes pavement body (1) and a plurality of triaxial displacement monitoring devices (2), pavement body (1) includes surface course (11), basic unit (12) and is located pavement kerf (13) of surface course (11), the XY face of triaxial displacement monitoring devices (2) is located on the plane at surface course (11) and basic unit (12) juncture place, and is a plurality of triaxial displacement monitoring devices (2) even interval, the outside of pavement main part (1) is located to the at least part of triaxial displacement monitoring devices (2).

2. The cement concrete pavement early deformation monitoring structure according to claim 1, wherein the triaxial displacement monitoring device (2) comprises a support portion (21) and a monitoring portion (22), the monitoring portion (22) comprises a transverse displacement meter, a longitudinal displacement meter and a vertical displacement meter, the directions of the three displacement meters are respectively arranged along the transverse direction, the longitudinal direction and the vertical direction of the pavement body (1), and the transverse displacement meter and the longitudinal displacement meter form an XY plane of the triaxial displacement monitoring device (2).

3. The cement concrete pavement early deformation monitoring structure according to claim 2, wherein the support portion (21) is provided outside the pavement main body (1); the monitoring part (22) is at least partially arranged inside the surface layer (11).

4. The cement concrete pavement early deformation monitoring structure according to claim 2, wherein the supporting portion (21) is spaced from the pavement body (1) by 10-15 cm.

5. Cement concrete pavement early deformation monitoring structure according to claim 1, characterized in that at least one of said triaxial displacement monitoring devices (2) is provided as a cut monitoring device near a pavement cut (13).

6. The cement concrete pavement early deformation monitoring structure according to claim 1, wherein the triaxial displacement monitoring device (2) is provided with two, one is provided at a position within ± 5cm from the middle position of the adjacent pavement slits (13) as a central monitoring device, and the other is provided near the pavement slits (13) as a slit monitoring device.

7. The cement concrete pavement early deformation monitoring structure of claim 1, further comprising one or more of the following features:

1) the thickness of the surface layer (11) is 20-40 cm;

2) the thickness of the base layer (12) is 20-40 cm;

3) the pavement joint-cutting seams (13) are vertically and downwards arranged, and the angle between the surface formed by downwards extending the pavement joint-cutting seams (13) and the extending direction of the pavement body (1) is 85-90 degrees.

8. A cement concrete pavement early deformation monitoring system, characterized in that, cement concrete pavement early deformation monitoring system includes:

1) the data acquisition module comprises the cement concrete pavement early deformation monitoring structure as claimed in any one of claims 1-7, and is used for acquiring early deformation data of the cement concrete pavement;

2) the data processing module is used for calculating the deformation of the road surface according to the data acquired by the data acquisition module and the following formula and judging the early operation state of the road surface:

X＝a₁X_A+a₂X_B

X_A＝a_1xX_Ax+a_1yX_Ay+a_1zX_Az

X_B＝a_2xX_Bx+a_2yX_By+a_2zX_Bz

wherein: x is the total accumulated deformation of the road surface, and the unit is mum;

X_Ax，X_Ay，X_Azthe three-axis displacement monitoring device at the position A respectively measures the results in mm along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_Bx，X_By，X_Bzthe three-axis displacement monitoring device at the position B respectively measures the results of the measurement along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body, and the unit is micrometer;

X_A-the calculation of the deformation of the triaxial displacement monitoring device at position a in μm;

X_B-the calculation of the deformation of the triaxial displacement monitoring device at position B in μm;

a₁，a₂-the cumulative deformation reduction factor at the positions A, B, a₁＝0.6，a₂＝0.4；

a_1x，a_1y，a_1z-the three-axis displacement monitoring device at position a measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_1x＝0.1，a_1y＝0.1，a_1z＝0.8；

a_2x，a_2y，a_2z-the three-axis displacement monitoring device at position B measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_2x＝0.05，a_2y＝0.1，a_2z＝0.85；

3) The data display module is used for displaying the data acquired by the data acquisition module and/or the data obtained by the processing of the data processing module;

4) and the power supply module is used for supplying power to the data acquisition module and the data display module.

9. A method for monitoring early deformation of a cement concrete pavement, which is characterized in that the early deformation of the pavement is monitored by the structure for monitoring early deformation of the cement concrete pavement according to any one of claims 1 to 7 or the system for monitoring early deformation of the cement concrete pavement according to claim 8, and the early deformation data of the pavement is obtained according to the displacement monitoring result provided by a triaxial displacement monitoring device (2).

10. The method of monitoring early deformation of a cement concrete pavement according to claim 9, comprising:

s1) providing a total accumulated road surface deformation X in μm according to the following formula:

X＝a₁X_A+a₂X_B

X_A＝a_1xX_Ax+a_1yX_Ay+a_1zX_A2

X_B＝a_2xX_Bx+a_2yX_By+a_2zX_Bz

wherein: x is the total accumulated deformation of the road surface, and the unit is mum;

X_Ax,X_Ay,X_Azthe three-axis displacement monitoring device at the position A respectively measures the results in mm along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_Bx,X_By,X_Bz-three axes at position BMoving the monitoring device to respectively measure the results in the unit of mu m along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_A-the calculation of the deformation of the triaxial displacement monitoring device at position a in μm;

X_B-the calculation of the deformation of the triaxial displacement monitoring device at position B in μm;

a₁，a₂-the cumulative deformation reduction factor at the positions A, B, a₁＝0.6，a₂＝0.4；

a_1x,a_1y,a_1z-the three-axis displacement monitoring device at position a measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_1x＝0.1，a_1y＝0.1，a_1z＝0.8；

a_2x,a_2y,a_2z-the three-axis displacement monitoring device at position B measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_2x＝0.05，a_2y＝0.1，a_2z＝0.85；

S2) judging the early operation state of the road surface according to the total accumulated deformation X of the road surface obtained in S1).

11. A computer-readable storage medium, on which a computer program is stored, wherein the program, when executed by a processor, implements the cement concrete pavement early deformation monitoring method of claim 9 or 10.

12. An apparatus, comprising: a processor and a memory for storing a computer program, wherein the processor is configured to execute the computer program stored by the memory to cause the apparatus to perform the steps of the cement concrete pavement early deformation monitoring method of claim 9 or 10.

Technical Field

The invention relates to the field of road engineering, in particular to a structure and a method for monitoring early deformation of a cement concrete pavement.

Background

With the development of highway and airport construction in China, the construction scale is continuously enlarged, and the requirement on the highway (runway) is continuously improved. The early deformation condition of the road (road) surface can often reflect the damage trend of the road (road) surface in a long-term running state, and is very important for the normal running of the runway. If the early deformation amount of the road (road) surface is large, it may mean that the deformation degree of the road (road) surface is seriously increased along with the increase of the operation time, so that the jolt in the driving process is caused to influence the driving stability, and the serious threat is brought to the operation safety of the road (road) surface.

The current common road (road) surface deformation monitoring method mainly takes a laboratory test method as a main method. The early-age deformation monitoring of the concrete material is firstly carried out in a laboratory, and the conditions such as boundary conditions, interlayer contact, stress relaxation, creep and the like are considered, so that the early-age deformation of the concrete pavement (road) panel is simulated and calculated. Due to the influence of external factors such as construction quality, maintenance conditions and the like, early-age deformation obtained through laboratory tests and calculation generally has a large difference with actual deformation on site, and early warning and prompting of early-age diseases of road (road) surfaces cannot be realized, so that the site construction of concrete cannot be accurately guided, and potential diseases caused by improper early-age treatment of concrete construction are reduced. Therefore, the real-time monitoring method for early-age deformation of concrete can effectively solve the problems, thereby improving the construction quality and reducing the later-stage disease repair cost.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, it is an object of the present invention to provide a cement concrete pavement early deformation monitoring structure and method for solving the problems of the prior art.

In order to achieve the above and other related objects, the present invention provides a cement concrete pavement early deformation monitoring structure, which includes a pavement body and a plurality of triaxial displacement monitoring devices, wherein the pavement body includes a surface layer, a base layer and a pavement kerf positioned on the surface layer, the XY plane of the triaxial displacement monitoring device is arranged on a plane where a junction of the surface layer and the base layer is located, the triaxial displacement monitoring devices are uniformly spaced, and at least part of the triaxial displacement monitoring device is arranged outside the pavement body.

The invention also provides a cement concrete pavement early deformation monitoring system, which comprises:

1) the data acquisition module comprises a cement concrete pavement early deformation monitoring structure and is used for acquiring early deformation data of the cement concrete pavement;

2) the data processing module is used for calculating the deformation of the road surface according to the data acquired by the data acquisition module and the following formula and judging the early operation state of the road surface:

X＝a₁X_A+a₂X_B

X_A＝a_1xX_Ax+a_1yX_Ay+a_1zX_Az

X_B＝a_2xX_Bx+a_2yX_By+a_2zX_Bz

wherein: x is the total accumulated deformation of the road surface, and the unit is mum;

X_Ax,X_Ay,X_Azthe three-axis displacement monitoring device at the position A respectively measures the results in mm along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_Bx,X_By,X_Bz-the three-axis displacement monitoring device at position B is respectively transverse to the pavement bodyThe unit of the measurement results of the longitudinal direction of the pavement body and the vertical direction of the pavement body is mum;

X_A-the calculation of the deformation of the triaxial displacement monitoring device at position a in μm;

X_B-the calculation of the deformation of the triaxial displacement monitoring device at position B in μm;

a₁，a₂-the cumulative deformation reduction factor at the positions A, B, a₁＝0.6，a₂＝0.4；

a_1x,a_1y,a_1z-the three-axis displacement monitoring device at position a measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_1x＝0.1，a_1y＝0.1，a_1z＝0.8；

a_2x,a_2y,a_2z-the three-axis displacement monitoring device at position B measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_2x＝0.05，a_2y＝0.1，a_2z＝0.85；

3) The data display module is used for displaying the data acquired by the data acquisition module and/or the data obtained by the processing of the data processing module;

4) and the power supply module is used for supplying power to the data acquisition module and the data display module.

The invention also provides a method for monitoring early deformation of the cement concrete pavement, which monitors early deformation of the pavement through the structure for monitoring early deformation of the cement concrete pavement or the system for monitoring early deformation of the cement concrete pavement, and acquires early deformation data of the pavement according to a displacement monitoring result provided by the triaxial displacement monitoring device.

The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for monitoring early deformation of a cement concrete pavement.

The present invention also provides an apparatus comprising: a processor and a memory, the memory storing a computer program, wherein the processor is configured to execute the computer program stored in the memory to cause the apparatus to perform the steps of the method for monitoring early deformation of a cement concrete roadway surface.

As described above, the structure and method for monitoring early deformation of a cement concrete pavement according to the present invention have the following advantages: a direct and feasible method is provided for monitoring the dynamic change of the early deformation of the pavement, and the dynamic change rule of the early deformation of the pavement along with the time can be researched on the basis, so that the structural problem of the runway and the potential safety hazard caused by the early deformation of the pavement can be timely monitored, and the effect of preventing the runway from being suffered in the bud can be achieved. In addition, the monitoring structure is integrally arranged on the outer side of the road surface, so that the monitoring on the early deformation of the road surface can be carried out under the condition of not influencing the running of the road surface, the running efficiency of the road surface is greatly improved, and the method has a good industrialization prospect.

Drawings

Fig. 1 is a schematic top view of a cement concrete pavement early deformation monitoring structure according to the present invention.

Fig. 2 is a schematic side view of an early deformation monitoring structure for a cement concrete pavement according to the present invention.

Fig. 3 is a schematic cross-sectional view of an early deformation monitoring structure of a cement concrete pavement according to the present invention. A, B in FIGS. 1 to 3 are the same as A, B in example 1, and are all the layout points.

Fig. 4 shows a schematic view of a monitor support of the early deformation monitoring structure of a cement concrete pavement provided by the invention.

Description of the element reference numerals

1 road surface body

11 surface layer

12 base layer

13 road surface cutting seam

2 triaxial displacement monitoring device

21 support part

22 monitoring section

3 power supply

Transverse direction of the X-way surface body

Longitudinal direction of Y-shaped track surface body

Z track surface body vertical direction

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

Please refer to fig. 1 to 4. It should be understood that the structures, ratios, sizes, and the like shown in the drawings and described in the specification are only used for matching with the disclosure of the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modification, ratio relationship change, or size adjustment should still fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.

The invention provides a cement concrete pavement early deformation monitoring structure and method through a large amount of practical researches, the monitoring structure and method can timely feed back the pavement early deformation rule, and the monitoring structure and method have the characteristics of convenience in installation, high stability of measured data, real-time feedback and the like.

The invention provides a cement concrete pavement early deformation monitoring structure, as shown in fig. 1-4, the cement concrete pavement early deformation monitoring structure comprises a pavement body 1 and a plurality of triaxial displacement monitoring devices 2, the pavement body 1 comprises a surface layer 11, a base layer 12 and a pavement kerf 13 positioned on the surface layer 11, the XY surface of the triaxial displacement monitoring devices 2 is arranged on a plane where the junction of the surface layer and the base layer is positioned, the triaxial displacement monitoring devices 2 are uniformly spaced, and at least part of the triaxial displacement monitoring devices 2 is arranged on the outer side of the pavement body 1.

In the early deformation monitoring structure of the cement concrete pavement provided by the invention, the pavement body 1 can be various cement concrete pavements in the field. For example, it may be an airport pavement, a highway pavement, or the like.

In one embodiment, the pavement body 1 generally includes, from top to bottom, a facing layer 11, a base layer 12, and a pavement seam 13 on the facing layer 11.

In the pavement body 1, the face layer 11 generally functions to directly bear the traffic load and the external environment, and to provide a comfortable and safe driving surface for the vehicle.

The material of the facing 11 may typically be plain concrete, prestressed concrete, steel fibre concrete or the like.

The thickness of the surface layer 11 is 20-40 cm. The thickness of the surface layer 11 may be, for example, 20 to 25cm, 25 to 30cm, 30 to 35cm, 30 to 31cm, 31 to 32cm, 32 to 33cm, 33 to 34cm or 34 to 35 cm.

In the pavement body 1, the base layer 2 generally functions to take up vertical forces diffused down by the pavement and further diffuse and transmit the vertical forces to the underlying structural layers.

The material of the base layer 2 may typically be roller compacted concrete, inorganic binder-stabilizing type materials, crushed (gravel) stone mixes, etc.

The thickness of the base layer 2 may be 20 to 40 cm. The thickness of the base layer 2 may be, for example, 20 to 25cm, 25 to 30cm, 30 to 35cm, 30 to 31cm, 31 to 32cm, 32 to 33cm, 33 to 34cm, or 34 to 35 cm.

Generally, the pavement cuts 13 are disposed vertically downward (i.e., open downward in the direction of gravity). The depth of the pavement cutting seam 13 can be 4-6 cm, 4-4.5 cm, 4.5-5 cm, 5-5.5 cm or 5.5-6 cm.

The pavement cuts 13 extend generally along the surface of the facing layer 11 and generally extend in a direction that matches the direction of extension of the pavement body 1. For example, the angle between the extending direction of the road surface joint slit 13 and the extending direction of the road surface body 1 may be 85 ° to 90 °, 85 ° to 86 °, 86 ° to 87 °, 87 ° to 88 °, 88 ° to 89 °, or 89 ° to 90 °. Namely, the angle between the surface formed by downward extension of the pavement cutting seam 13 and the longitudinal direction of the pavement body 1 is 85-90 degrees.

In one embodiment, a plurality of triaxial displacement monitoring devices 2 are arranged below at least part of the pavement joint cuts 13, that is, the cement concrete pavement early deformation monitoring structure is at least provided with a joint cut monitoring device, and the joint cut monitoring device is arranged close to the pavement joint cuts 13. The three-axis displacement monitoring device 2 is generally spaced from the vertical surface corresponding to the road surface cutting seam 13. That is, the three-axis displacement monitoring device 2 is not located right below the pavement joint-cutting 13, but is matched with a vertical surface corresponding to the pavement joint-cutting 13 (i.e., a plane formed by extending the pavement joint-cutting in the gravity direction), and has a proper distance from the vertical surface corresponding to the pavement joint-cutting 13. For example, the distance between the triaxial displacement monitoring device 2 and the vertical surface corresponding to the road surface joint-cutting 13 can be 5-10 cm, 5-6 cm, 6-7 cm, 7-8 cm, 8-9 cm or 9-10 cm.

The triaxial displacement monitoring device is generally located at the junction of the surface layer and the base layer and located on one side of the surface layer.

The triaxial displacement monitoring devices are generally uniformly distributed at the junction of the surface layer and the base layer, so that the early deformation rule of the road surface can be integrally and accurately fed back.

In one embodiment, at least part of the pavement cutting seams 13 are provided with the three-axis displacement monitoring device 2 below and in the middle of the pavement body 1. The three-axis displacement monitoring device is provided with more than two three-axis displacement monitoring devices, wherein the three-axis displacement monitoring devices can comprise a center monitoring device distributed on the central line of the pavement body and a cutting monitoring device distributed below a cutting of the pavement body. The center monitoring device is positioned near a center line perpendicular to the advancing direction of the carrier (i.e. parallel to the center line of the slit). The center monitoring device is arranged at the position which is +/-5 cm away from the middle position of the joint cutting 13 of the two adjacent surfaces. In one embodiment, the distance d between the center monitoring device and the center line perpendicular to the advancing direction of the carrier is less than or equal to 10 cm. For another example, the three-axis monitoring device usually has a suitable distance from the lateral surface of the pavement body, and the distance from the three-axis monitoring device to the lateral surface of the pavement body may be 10-15 m, 10-11 cm, 11-12 cm, 12-13 cm, 13-14 cm or 14-15 cm.

In the early deformation monitoring structure for the cement concrete pavement provided by the invention, the three-axis displacement monitoring device at the joint cutting position is usually positioned on one side of the joint cutting position close to the pavement facing to the driving direction (namely, the advancing direction) of the carrier. Therefore, the influence of the carrier contacting the next plate after the cutting seam on the deformation of the road surface can be accurately captured.

Generally speaking, triaxial displacement monitoring devices includes monitoring portion 22 and supporting part 21, supporting part 21 mainly can be parts such as monitoring devices's support, supporting part 21 mainly can be located in the road bed outside the pavement, set up supporting part 21 mainly for the installation of the convenient monitoring devices support among the road bed, monitoring portion 22 then is triaxial monitoring devices's main part (be the part that the actual use monitored the displacement of pavement monitoring point changes promptly), the height of monitoring portion 22's stiff end mainly can be located surface course department, set up monitoring portion 22's stiff end in the surface course mainly displacement monitoring devices is more sensitive to the deformation condition of surface course department pavement. Triaxial displacement monitoring devices includes three mutually perpendicular's displacement meter, includes that lateral displacement meter, longitudinal displacement meter take into account vertical displacement meter promptly, and wherein lateral displacement meter and longitudinal displacement meter form triaxial displacement monitoring devices 2's XY face, three displacement meter direction respectively be along the setting of joint-cutting direction (the horizontal of railway face body 1 promptly), the level is on a parallel with railway face extending direction (the vertical of railway face body 1 promptly), perpendicular to railway face plane direction (the vertical of railway face body 1 promptly). The supporting part 21 is arranged on the outer side of the pavement main body 1; the monitoring portion 22 is at least partially provided inside the surface layer 11. The distance between the supporting part 21 and the road surface body 1 is 10-15 cm.

In the early deformation monitoring structure of the cement concrete pavement, the three-axis displacement monitoring device 2 is mainly used for acquiring the deformation condition of the cement concrete pavement in the initial pouring stage. Suitable instruments that may be used as triaxial displacement monitoring devices will be known to those skilled in the art and may be, for example, KTL type LVDT displacement sensors. As another example, the triaxial displacement monitoring device is generally connected to an external device (e.g., a data acquisition module of DAM-3158 type, a computer, a 24V regulated power supply, etc.) to collect data acquired by the device.

The monitoring process of the early deformation monitoring structure of the cement concrete pavement comprises the following steps: the triaxial displacement monitoring device 2 is embedded at a proper position on the outer side of a road surface (for example, a concrete road (or pavement) surface) in a specific manner, the fixed end of the monitoring part 22 horizontally extends into the road surface body from the outer side of the road surface body, and the extending direction of the fixed end of the monitoring part 22 is parallel to the direction of the cutting seam. Carry out data acquisition through triaxial displacement monitoring devices 2 to can transmit the data acquisition to computer terminal, can learn the dynamic change law of the early monitoring point displacement of pavement operation after further carrying out analysis processes to data, thereby learn the early deformation condition of pavement.

The second aspect of the present invention provides a method for constructing the early deformation monitoring structure of the cement concrete pavement provided by the first aspect of the present invention, and a suitable method for constructing the early deformation monitoring structure of the cement concrete pavement should be known to those skilled in the art on the premise of knowing the early deformation monitoring structure of the cement concrete pavement. For example, can locate the surface course and the basic unit juncture of road surface with triaxial displacement monitoring devices, the latter half is pre-buried fixed in the road bed in the road surface outside, and the first half highly is located the surface course, and the stiff end level stretches into in the surface course when the surface course is under construction.

A third aspect of the present invention provides a system for monitoring early deformation of a cement concrete pavement, including:

1) the data acquisition module comprises a cement concrete pavement early deformation monitoring structure and is used for acquiring early deformation data of the cement concrete pavement;

2) the data processing module is used for calculating the deformation of the road surface according to the data acquired by the data acquisition module and the following formula and judging the early operation state of the road surface:

X＝a₁X_A+a₂X_B

X_A＝a_1xX_Ax+a_1yX_Ay+a_1zX_Az

X_B＝a_2xX_Bx+a_2yX_By+a_2zX_Bz

wherein: x is the total accumulated deformation of the road surface, and the unit is mum;

X_Ax，X_Ay，X_Azthe three-axis displacement monitoring device at the position A respectively measures the results in mm along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_Bx，X_By，X_Bzthe three-axis displacement monitoring device at the position B respectively measures the results of the measurement along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body, and the unit is micrometer;

X_A-the calculation of the deformation of the triaxial displacement monitoring device at position a in μm;

X_B-the calculation of the deformation of the triaxial displacement monitoring device at position B in μm;

a₁，a₂-the cumulative deformation reduction factor at the positions A, B, a₁＝0.6，a₂＝0.4；

a_1x，a_1y，a_1z-the three-axis displacement monitoring device at position a measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_1x＝0.1，a_1y＝0.1，a_1z＝0.8；

a_2x，a_2y，a_2z-the three-axis displacement monitoring device at position B measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_2x＝0.05，a_2y＝0.1，a_2z＝0.85；

3) The data display module is used for displaying the data acquired by the data acquisition module and/or the data obtained by the processing of the data processing module;

4) and the power supply module is used for supplying power to the data acquisition module and the data display module.

The data acquisition module is connected with the data display module through a USB line.

The power supply module comprises a power supply 3, for example, a voltage stabilizing power supply device, and the positive electrode and the negative electrode of the power supply are both connected with the data acquisition module.

The fourth aspect of the present invention provides a method for monitoring early deformation of a cement concrete pavement, which monitors early deformation of the pavement through the structure for monitoring early deformation of a cement concrete pavement provided by the first aspect of the present invention or the system for monitoring early deformation of a cement concrete pavement provided by the third aspect of the present invention, and comprises: and acquiring early deformation data of the pavement according to the monitoring point displacement monitoring result provided by the triaxial displacement monitoring device.

The method for monitoring the early deformation of the cement concrete pavement specifically comprises the following steps:

s1) providing a total accumulated road surface deformation X in μm according to the following formula:

X＝a₁X_A+a₂X_B

X_A＝a_1xX_Ax+a_1yX_Ay+a_1zX_Az

X_B＝a_2xX_Bx+a_2yX_By+a_2zX_Bz

wherein: x is the total accumulated deformation of the road surface, and the unit is mum;

X_Ax，X_Ay，X_Azthe three-axis displacement monitoring device at the position A respectively measures the results in mm along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_Bx,X_By,X_Bzthe three-axis displacement monitoring device at the position B respectively measures the results of the measurement along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body, and the unit is micrometer;

X_A-the calculation of the deformation of the triaxial displacement monitoring device at position a in μm;

X_B-the calculation of the deformation of the triaxial displacement monitoring device at position B in μm;

a₁，a₂-reduction of the cumulative deformation at the positions A, BCoefficient of a₁＝0.6，a₂＝0.4；

a_1x,a_1y,a_1z-the three-axis displacement monitoring device at position a measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_1x＝0.1，a_1y＝0.1，a_1z＝0.8；

a_2x,a_2y,a_2z-the three-axis displacement monitoring device at position B measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_2x＝0.05，a_2y＝0.1，a_2z＝0.85；

S2) judging the early operation state of the road surface according to the total accumulated deformation X of the road surface obtained in S1).

In the above formula, X_Ax、X_Ay、X_Az、X_Bx、X_By、X_BzThe three-direction displacement monitoring results of the monitoring points provided by the three-axis displacement monitoring device can be further calculated to obtain the deformation calculation result X of the three-axis displacement monitoring device at the required position A, B according to the displacement monitoring results_A、X_B。

The method for monitoring the early deformation of the cement concrete pavement provided by the invention can also comprise the following steps: calculating a result X according to the deformation of the three-axis displacement monitoring device at the position A, B_A、X_BProviding the total accumulated deformation X of the road (road) surface, wherein X is X_A、x_BWeighted summation of (3). In the actual monitoring process, the triaxial displacement monitoring device can acquire the displacement change condition of each monitoring point in the whole test period, the whole deformation calculation result of each monitoring point can be obtained through calculation, and further the total accumulated deformation X of the road (road) surface can be obtained.

In the method S2) for monitoring early deformation of a cement concrete pavement provided by the present invention, the early operation state of the pavement (or referred to as providing an early deformation result of the pavement) can be determined by the following method: when the total accumulated deformation X of the road (road) surface is lower, the early deformation degree of the road surface is lower, and the damage degree of the road surface is smaller; when the total accumulated deformation X of the road (road) surface is higher, the early deformation degree of the road surface is higher, and the damage degree of the road surface is higher. For example, when the detection time is 60min, the early road condition is considered to be excellent when X <100 μm; when X is more than or equal to 100 mu m and less than 110 mu m, the early state of the pavement is considered to be good; when X is more than or equal to 110 mu m and less than 125 mu m, the early state of the pavement is considered to be general; when X is more than or equal to 125 mu m and less than 150 mu m, the early state of the pavement is considered to be poor; when X.gtoreq.150. mu.m, the early state of the pavement is considered to be extremely poor.

A fifth aspect of the present invention provides a computer-readable storage medium having stored thereon a computer program which, when executed by a processor, implements the method for monitoring early deformation of a cement concrete pavement provided by the third aspect of the present invention.

A sixth aspect of the present invention provides an apparatus comprising: a processor and a memory, the memory being configured to store a computer program, the processor being configured to execute the computer program stored by the memory to cause the apparatus to perform the steps of the method for monitoring early deformation of a cement concrete pavement provided by the fourth aspect of the present invention.

Example 1:

according to the concrete pavement (road) surface plate construction drawing, marking the positions corresponding to the joint cuts of the surface plate plates and the positions corresponding to the joint cuts in the plates on the base layer. And marking a layout point A, B on the outer side of the road between the near-road joint cutting and the two adjacent road joint cutting, wherein the distance between B and the joint cutting is 5cm, and marking A1, A2, A3, B1, B2 and B3 on the outer side of the road at the position A, B which is 10-15cm away from the road body as the preset hole positions of the reinforcing steel bar column at the installation position of the triaxial deformation monitoring device.

The method is characterized in that inorganic binder stable materials are used as materials of a concrete pavement base course, the construction thickness is 20cm, after the construction and maintenance of the concrete pavement base course are completed, the holes of reinforcing steel bar columns are arranged according to the preset installation positions of the triaxial deformation monitoring device, holes are punched at the positions A1, A2, A3, B1, B2 and B3 by a drilling machine, the reinforcing steel bar columns are installed, and the peripheries of the reinforcing steel bar columns are reinforced by plain cement paste.

At position a and position B, a three-axis displacement monitoring device (three KTL-type LVDT displacement sensors) is fixed to the rebar column. The trend of the three displacement monitoring devices is consistent with the preset trend during installation, so that the three-axis data is real and reliable. Then, a common concrete pavement is adopted as a pouring form of a concrete pavement surface layer, the construction thickness is 30cm, the width of a cutting seam is 6mm, and the depth is 5 cm.

The three-axis displacement monitoring device is connected with the data acquisition module and the stabilized voltage power supply, the data acquisition module is connected with the computer through a USB data line, and meanwhile, the power supply is connected with the data acquisition module to supply power for a certain period. The computer stores the transmitted data, and the power supply adopts a solar energy system to supply power, thereby realizing all-weather automatic data acquisition.

And carrying out early deformation monitoring on the test road section from the pouring and forming of the test road section, and recording the deformation change condition of the road surface of each monitoring point of the test road section in the whole process, so as to guide the early maintenance work of the concrete. The monitoring results and processing of the triaxial displacement monitoring device are shown in table 1.

TABLE 1 three-axis displacement monitoring device monitoring results

And processing and analyzing the data acquired by the triaxial displacement monitoring device by utilizing analysis software in the data processing module so as to obtain early deformation data of the concrete pavement (road).

The data processing process is as follows: respectively substituting the data acquired by the data acquisition modules at different time points into the following formula to calculate

X＝a₁X_A+a₂X_B

X_A＝a_1xX_Ax+a_1yX_Ay+a_1zX_Az

X_B＝a_2xX_Bx+a_2yX_By+a_2zX_Bz

Wherein: x is the total accumulated deformation (mum) of the road (road) surface;

X_Ax，X_Ay，X_Az-three axes at position AMeasuring results (mm) of the displacement monitoring device along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_Bx，X_By，X_Bz-measuring results (μm) of the three-axis displacement monitoring device at position B along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body;

X_A-the calculation of the deformation (μm) of the triaxial displacement monitoring device at position a;

X_B-the calculation of the deformation (μm) of the triaxial displacement monitoring device at position B;

a₁，a₂-the cumulative deformation reduction factor at the positions A, B, a₁＝0.6，a₂＝0.4；

a_1x，a_1y，a_1z-the three-axis displacement monitoring device at position a measures the reduction coefficient, a, along the transverse direction of the pavement body, the longitudinal direction of the pavement body and the vertical direction of the pavement body_1x＝0.1，a_1y＝0.1，a_1z＝0.8；

a_2x，a_2y，a_2z-the three-axis displacement monitoring device at position B measures the reduction coefficient of the result along the road direction, along the kerf direction and in the vertical direction, a_2x＝0.05，a_2y＝0.1，a_2z＝0.85；

The obtained results were evaluated for the degree of early deformation of the road (road) surface according to the following criteria (table 2).

TABLE 2 evaluation criteria for early deformation degree of road (road) surface

Note: and selecting the closest monitoring time point data to represent according to the principle of proximity for the measurement result without the standard time.

The evaluation results are shown in table 3.

TABLE 3 three-axis displacement detection device monitoring results

The detection result shows that the method can effectively realize real-time monitoring of early deformation of the road surface and has practical use significance.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.