CN114561886A

CN114561886A - Sensor mounting bracket, pavement structure and pavement sensor assembling construction method

Info

Publication number: CN114561886A
Application number: CN202210264007.9A
Authority: CN
Inventors: 魏亚; 刘川昆; 闫闯; 叶周景; 汪林兵
Original assignee: Tsinghua University; University of Science and Technology Beijing USTB
Current assignee: Tsinghua University; University of Science and Technology Beijing USTB
Priority date: 2022-03-17
Filing date: 2022-03-17
Publication date: 2022-05-31

Abstract

The invention relates to a sensor mounting bracket, a pavement structure and a pavement sensor assembling and constructing method, and relates to the technical field of pavement construction. The sensor mounting bracket provided by the invention can utilize the storage effect of the mounting surface on the bracket body on the sensor and the assembly of the bracket body relative to the pavement base layer, and can meet the requirement of mounting the sensor relative to the pavement without directly arranging a groove body for accommodating the sensor on the pavement, thereby reducing the damage to the pavement. And utilize the removal of support body relative road surface basic unit in order to realize sensor mounting height and adjust, the assembly flexibility is higher, just also need not consider the control of fluting size degree of depth and fluting degree of difficulty. In addition, because the complete pavement also has a pavement surface layer on the pavement base layer, and the frame body is installed on the pavement base layer, the pavement surface layer can cover the sensor and the sensor installation support, so that the surface smoothness of the pavement is ensured.

Description

Sensor mounting bracket, pavement structure and pavement sensor assembling construction method

Technical Field

The invention relates to the technical field of pavement construction, in particular to a sensor mounting bracket, a pavement structure and a pavement sensor assembling construction method.

Background

In the process of road surface construction, a sensor is needed to monitor the mechanical property inside a road surface structure in real time. At present, the main adopted mode is to open a groove on the road surface after the construction and the paving of the road surface are finished or the road surface is put into use, so as to bury the sensor at the position of the groove. However, the influence of the mode on the whole pavement is large, the depth of the groove is not easy to control, and the surface flatness of the pavement is easily influenced by concrete backfilling after the groove is formed.

Disclosure of Invention

Therefore, it is necessary to provide a sensor mounting bracket for solving the technical problems of great influence on the road surface and inconvenient operation when a sensor is arranged on the road surface in the prior art.

A sensor mounting bracket comprises a bracket body, a sensor mounting bracket and a sensor mounting bracket, wherein a mounting surface for mounting a sensor is configured, and the part of the bracket body, which is positioned at the bottom of the mounting surface, is used for being inserted into a pavement base; the frame body can move along the inserting direction relative to the pavement base layer, so that the mounting surface is close to or far away from the pavement base layer.

Compared with the prior art that the groove is directly formed in the road surface, the sensor mounting bracket provided by the invention can utilize the storage effect of the mounting surface on the bracket body on the sensor and the assembly of the bracket body relative to the road surface base layer, and can meet the requirement of the mounting of the sensor relative to the road surface without directly arranging a groove body for accommodating the sensor on the road surface, thereby reducing the damage to the road surface. And utilize the removal of support body relative road surface basic unit in order to realize sensor mounting height and adjust, the assembly flexibility is higher, just also need not consider the control of fluting size degree of depth and fluting degree of difficulty. In addition, because the complete road surface is provided with the road surface layer on the road surface base layer, and the frame body is arranged on the road surface base layer, the road surface layer can cover the sensor and the sensor mounting bracket, and the surface smoothness of the road surface is ensured.

In one embodiment, the frame body comprises at least two opposite and spaced-apart supporting arms, one ends of the at least two supporting arms are used for being inserted into the pavement base, and the mounting surface is configured at one ends of the at least two supporting arms, which are far away from the pavement base; the sensor installing support still including connect in the regulation seat of support body, just adjust the seat and can follow the direction of insertion extension or the shortening of support body, in order to drive the support body removes.

In one embodiment, the adjusting seat is inserted between any two adjacent supporting arms, the bottom of the adjusting seat is used for being placed on the pavement base, and the top of the adjusting seat is in contact with the mounting surface; when the adjusting seat is in a contraction state, the height of the adjusting seat is smaller than that of each supporting arm.

In one embodiment, each support arm comprises at least two upright posts arranged at intervals along a first direction, the first direction forms an angle with the interval direction of the two support arms, and the first direction forms an angle with the telescopic direction of the adjusting seat.

In one embodiment, a first beam column is connected between any two adjacent upright columns in the same supporting arm; the support body still including connect in arbitrary adjacent two the second beam column between the support arm, first beam column with the second beam column encloses jointly and establishes into the installation face.

In one embodiment, the rack body further comprises a limiting cover arranged on one side, away from the supporting arm, of the mounting surface, and the limiting cover and the mounting surface jointly enclose a containing space for containing a sensor.

In one embodiment, the limiting cover comprises a limiting enclosure and a plurality of limiting columns; a plurality of spacing post is around the circumference interval arrangement who establishes the space is established to the appearance and be connected in the support arm, spacing enclose the fender connect in spacing post deviates from the one end of installation face, spacing enclose the fender be used for right the sensor is along deviating from the removal of road surface basic unit one side is spacing.

In one embodiment, the limiting enclosure comprises at least two metal wires which are arranged in a crossed mode, and two ends of each metal wire are connected to two limiting columns which are opposite to each other in the radial direction of the accommodating space respectively.

In one embodiment, the number of the limiting covers is multiple, and the limiting covers are arranged at intervals along the length direction of the rack body.

In one embodiment, the adjusting seat comprises a base, a sliding body and a locking piece; the base structure has the sliding hole, the sliding body hold locate in the sliding hole and can slide in the sliding hole, the sliding body stretches out the terminal surface top of sliding hole touch in the installation face, the retaining member is used for the sliding body remove to the target position after with the sliding body locking in the base.

The utility model provides a pavement structure, includes road surface basic unit, pavement surface course and foretell sensor installing support, the sensor installing support is inserted and is located road surface basic unit for assemble the sensor, pavement surface course cover in road surface basic unit with on the sensor installing support. The sensor is assembled between the pavement base layer and the pavement surface layer through the sensor mounting bracket, so that the sensor is implanted relative to the pavement without slotting and digging holes on the pavement surface layer.

The pavement sensor assembling construction method is characterized by comprising the following steps of: mounting a sensor on a sensor mounting bracket; digging an insertion hole on a pavement base, inserting the bottom of the sensor mounting bracket into the insertion hole, and pouring concrete in the hole; paving a surface material on the pavement base layer until the surface material completely covers the sensor mounting bracket, the sensor and the pavement base layer to form a pavement surface.

Through such setting, can satisfy burying underground of the relative road surface of sensor in the road surface construction, and need not to pave at the road surface construction and pave and accomplish the back or the road surface has come into use the back at the road surface and fluting, improve the protectiveness to the road surface. And because the sensors are embedded simultaneously in the road surface construction process, the flatness of the road surface is guaranteed.

In one embodiment, when the height of the sensor mounting bracket reserved above the pavement base is less than 20cm, after concrete is poured into the insertion hole, the insertion hole is waited for 11h-13h, and then the height adjusting seat is taken out.

In one embodiment, when concrete is paved, the concrete at the bottom and the peripheral side of the sensor mounting bracket is filled when the concrete is paved to a position 4.5-5.5 m away from the sensor mounting bracket, and after the sensor mounting bracket and the sensor are completely covered, the pavement base layer is continuously paved with the surface layer material.

Drawings

FIG. 1 is a partial schematic view of a sensor mounting bracket according to the present invention with a sensor mounted therein;

FIG. 2 is a first fragmentary schematic view of a plurality of sensors mounted in a sensor mounting bracket provided by the present invention;

FIG. 3 is a second partial schematic view of a plurality of sensors assembled within a sensor mounting bracket provided in accordance with the present invention;

FIG. 4 is a schematic view of an adjustment mount in a sensor mounting bracket provided by the present invention;

FIG. 5 is a schematic view of the working conditions during construction in the method for assembling and constructing a pavement sensor according to the present invention;

fig. 6 is a flow chart of the road sensor assembling construction method provided by the invention.

Reference numerals are as follows: 10-a frame body; 11-a support arm; 111-upright post; 12-a first beam column; 13-a second beam column; 14-a limit cover; 20-an adjusting seat; 21-a base; 22-a slider; 23-a locking member; 100-a sensor mounting bracket; 101-a mounting surface; 102-accommodating space; 141-limit enclosing; 142-a spacing post; 200-a pavement base; 300-a slipform paver; 301-a roller; 302-a vibrating rod; 400-a sensor.

Detailed Description

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the description of the present invention, it is to be understood that the terms "central," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the invention and to simplify the description, and are not intended to indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the present invention, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may be directly contacting the second feature or the first and second features may be indirectly contacting each other through intervening media. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

At present, the monitoring of the structural information of the cement concrete pavement mainly comprises the monitoring of the mechanical property of a pavement surface layer and the monitoring of the mechanical property inside the pavement, wherein the monitoring of the mechanical property inside the pavement is to monitor the mechanical property inside the structure in real time by embedding sensors with different functions. At present, sensors for monitoring the health state of a cement concrete pavement structure mainly comprise a resistance type sensor, a fiber bragg grating sensor, an acceleration sensor and the like. Wherein, the electrical signal outputted by the resistance sensor is easy to be interfered; the fiber grating sensor needs to be provided with an expensive demodulator and is easily influenced by the temperature and the humidity of the environment; the acceleration sensor is used for representing the structural health state by collecting vibration information under the action of vehicle load, and evaluating the conditions of void, crack and the like at different positions of the corners, middle and edges of the road deck.

However, the embedding of the acceleration sensor is still in a starting stage, and the method mainly adopts that the pavement construction is paved or the grooving is carried out after the operation is started, and then the sensor is embedded in the position of the groove gap. Especially, when the sensor embedding requirement based on cement concrete slip form paving is combined with the slip form paving construction process, normal work of the acceleration sensor needs to be guaranteed on the premise of reducing influence on the road surface, and retirement and angle deflection of the sensor are avoided in the pushing process of a roller and a vibrating rod of the slip form paver after the acceleration sensor is embedded, so that the authenticity of vibration data acquisition is guaranteed.

In view of the above, as shown in fig. 1-3, an embodiment of the present invention provides a sensor mounting bracket 100 for satisfying the assembly of a sensor 400 in a road surface. Specifically, the sensor mounting bracket 100 includes a frame body 10 configured with a mounting surface 101 for mounting the sensor 400, and a portion of the frame body 10 located at the bottom of the mounting surface 101 is used for inserting the pavement base 200, and the frame body 10 is movable in an insertion direction relative to the pavement base 200 so that the mounting surface 101 is close to or away from the pavement base 200.

As shown in fig. 5, a general road surface includes a road base layer 200 and a road surface layer, and the road surface layer covers the road base layer 200. Therefore, the sensor mounting bracket 100 of the present embodiment may satisfy the mounting of the sensor 400 with respect to the road surface by storing the sensor 400 through the mounting surface 101 formed on the frame body 10 and then inserting the frame body 10 into the road base 200. After the frame body 10 is inserted, a pavement surface layer is required to be covered on the pavement base 200 to form a complete pavement. Compared with the mode of directly slotting on the road surface in the prior art, the mode is equivalent to the mode of pre-embedding the sensor 400 into the road surface while the road surface is built, and slotting to damage the road surface after the construction and the paving of the road surface are finished or the road surface is put into use is not needed. Meanwhile, due to the pre-buried arrangement mode, the surface of the pavement only needs to be smooth when the pavement surface is paved. And the frame body 10 moves relative to the pavement base 200 to adjust the insertion depth, so that the adjustment of the installation height of the sensor 400 relative to the pavement base 200 is met, namely the adjustment of the embedded depth of the sensor 400 relative to the whole pavement is realized. Compared with road surface grooving, the method has higher operation flexibility, and does not need to consider the grooving size and the grooving difficulty degree of depth. In addition, because the sensor installing support 100 is pre-buried, the intensity of the pavement surface layer is enhanced equivalently, and the intensity is improved similarly to a concrete reinforced bar support.

As shown in fig. 2 and 3, in actual use, a plurality of sets of sensors 400 are required to be disposed on a road surface, so that a plurality of corresponding sensor mounting brackets 100 are also provided and are arranged at intervals along the length extension direction of the road surface, and the interval distance is determined according to actual construction requirements and monitoring requirements. Meanwhile, the sensor 400 has a cylindrical structure, so that the stress concentration phenomenon can be reduced, and the coupling coordination with the pavement surface layer during paving can be improved.

As shown in fig. 1-3, in some embodiments, frame 10 includes two opposing and spaced-apart support arms 11, one end of each support arm 11 is configured for insertion into pavement base 200, and mounting surface 101 is configured at an end of each support arm 11 facing away from pavement base 200. The sensor mounting bracket 100 further includes an adjusting base 20 connected to the frame body 10, and the adjusting base 20 can be extended or shortened along the insertion direction of the frame body 10 to move the frame body 10. Specifically, the adjustment seat 20 is installed relative to the two support arms 11 and the adjustment seat 20 is telescopic, so that the frame body 10 moves relative to the pavement base 200, and the adjustment of the insertion depth is satisfied. Meanwhile, the two opposite supporting arms 11 arranged at intervals meet the stress balance, and have two-point support relative to the pavement base 200, so that the supporting performance of the sensor 400 is improved. The width of the space between the two support arms 11 should be adapted to the size of the sensor 400, so as to ensure that the sensor 400 is mounted stably and does not occupy too much space. In other embodiments, the number of the supporting arms 11 is four, two supporting arms 11 are taken as a group, and two groups of the supporting arms 11 are arranged oppositely and at intervals. So, through the mode that improves unilateral support intensity, satisfy the bulk strength reinforcing. Or, the number of the supporting arms 11 is three, and the three supporting arms 11 are all arranged oppositely and at intervals. Thus, three-point support for the sensor 400 can be satisfied, and the support stability is improved.

As shown in fig. 3, in some embodiments, an adjusting seat 20 is inserted between the two supporting arms 11, and the bottom of the adjusting seat 20 is used for being placed on the pavement base 200, and the top of the adjusting seat 20 is in contact with the mounting surface 101; and when the adjusting seat 20 is in the contraction state, the height of the adjusting seat 20 is smaller than that of the supporting arm 11. That is, the gap between the two support arms 11 is used for installing the adjusting base 20, so that the adjusting base 20 and the two support arms 11 form an integral structure with a smaller width, and the width is only the sum of the thickness and the distance between the two support arms 11. The bottom surface of the adjustment seat 20 is stably placed against the pavement base 200 and the top is adapted to cooperate with the mounting surface 101. When the top of the adjusting base 20 stretches, the mounting surface 101 drives the whole frame body 10 to ascend or descend relative to the pavement base 200, so that the insertion depth is adjusted. At the same time, it is ensured that each support arm 11 is already inserted into the base course 200 before the adjustment base 20 is installed, i.e. pre-fixed before installation, precisely because the height of the adjustment base 20 in the retracted state is smaller than the height of each support arm 11. In addition, such an arrangement can ensure that the mounting surface 101 is horizontal after the adjustment base 20 is inserted, and does not tilt due to height imbalance. In addition, the adjustment seat 20 can also be used for temporary support, for example, the support arm 11 is supported by the adjustment seat 20 before being stably fixed relative to the pavement base 200, and the adjustment seat 20 is taken out after being stably fixed.

Further, when the number of the support arms 11 is three and the support arms are arranged at intervals, the adjusting base 20 is inserted between any two adjacent support arms 11. Wherein, the adjusting seat 20 can be fixedly connected with the supporting arm 11 to form a non-detachable integrated structure; or, the adjusting base 20 may be inserted between the two supporting arms 11 in a sliding manner, and inserted when the lifting is needed, and taken out after the installation. The length of the adjusting base 20 is substantially the same as that of the frame body 10, so as to ensure that each position of the mounting surface 101 can bear the supporting force of the adjusting base 20 and the force is balanced. Or, the length of the adjusting seat 20 is slightly greater than that of the frame body 10; so, after adjusting seat 20 and inserting, adjust seat 20 and can bulge in support body 10 along length direction's both ends, the constructor of being convenient for pulls out and installs and adjust seat 20.

In one embodiment, as shown in fig. 4, the adjusting base 20 includes a base 21, a sliding body 22, and a locking member 23, the base 21 is configured with a sliding hole for accommodating the sliding body 22, the sliding body 22 can slide in the sliding hole, an end surface of the sliding body 22 extending out of the sliding hole contacts the mounting surface 101, and the locking member 23 is used for locking the sliding body 22 to the base 21 after moving to the target position. That is to say, the height adjustment of the frame body 10 is satisfied by the sliding connection of the sliding body 22 relative to the base 21, and the structure is simple and the operation is convenient. Meanwhile, the sliding hole is arranged to accommodate the sliding body 22 in a contracted state, and the width of the adjusting seat 20 is reduced to be more suitable for the insertion between the two supporting arms 11. When in actual use, the hole wall of the sliding hole is convexly provided with a sliding rail, the side wall of the sliding body 22 is concavely provided with a sliding groove, and sliding connection is realized through the matching of the sliding rail and the sliding groove. The locking member 23 is a screw screwed to the base 21 and abuts against the sliding member 22 to achieve fixation. Or the locking pieces 23 are cylinders such as pins, the base 21 and the sliding body 22 are provided with mounting holes, and each locking piece 23 can be selectively inserted into two coaxial mounting holes to fix the sliding body 22 relative to the base 21. Further, the number of the locker 23 is plural. Two locking members 23 are arranged at intervals in the width direction of the slider 22, and the plurality of locking members 23 are grouped and arranged at intervals in the height direction of the slider 22. Still further, a handle can be arranged at the top of the sliding body 22, or a handle is arranged on the side wall of the sliding body 22, so that a constructor can conveniently hang the handle to realize the lifting of the sliding body 22.

In other embodiments, the adjusting base 20 may be a linear module such as an air cylinder capable of linear motion. After the insertion depth of the frame body 10 relative to the pavement base 200 is adjusted, the adjusting base 20 is disassembled relative to the frame body 10 to enable pavement surface to be paved.

As shown in fig. 1-3, in some embodiments, each support arm 11 includes at least two columns 111 spaced apart along a first direction that is at an angle to the spacing direction of the two support arms 11 and at an angle to the telescoping direction of the adjustment base 20. It can also be understood that, assuming that the telescopic direction of the adjusting base 20 is a vertical direction (i.e. z axis in fig. 3), the spacing direction of the two supporting arms 11 is along the thickness direction of the supporting arms 11 (e.g. y axis in fig. 3), and the first direction is the length direction of the supporting arms 11 (e.g. x axis in fig. 3). In this way, it is satisfied that the sensor 400 has support in all three directions in space. The arrangement of the upright posts 111 reduces the contact area of each supporting arm 11 relative to the pavement base 200, and improves the protection of the pavement base 200. When each support arm 11 has two studs 111, the two opposite support arms 11 have four studs 111, which are inserted into the pavement base 200, and the top surfaces of the four studs 111 can be used as mounting surfaces 101 for supporting the sensor 400.

In other embodiments, the support arm 11 may be a rectangular plate, and the total height of the support arm 11 should be considered in combination with the installation height of the sensor 400 and the insertion depth of the pavement base 200 to satisfy the data acquisition accuracy and installation stability of the sensor 400. Of course, each support arm 11 can be composed of four or five uprights 111. The greater the number of columns 111, the higher the support strength. In still other embodiments, a cross post may be fixed between any two adjacent upright posts 111, and the installation height of the cross post should be higher than the maximum depth of the upright posts 111 inserted into the pavement base 200. The arrangement of the cross columns improves the connection reliability between any two adjacent upright columns 111, thereby improving the structural stability of the whole frame body 10.

As shown in fig. 1-3, in a specific embodiment, based on that the supporting arm 11 is composed of a plurality of columns 111, a first beam column 12 is connected between any two adjacent columns 111 in the same supporting arm 11; the frame body 10 further comprises a second beam column 13 connected between any two adjacent supporting arms 11, and the first beam column 12 and the second beam column 13 jointly enclose a mounting surface 101. Specifically, the setting of first beam column 12 connects two arbitrary adjacent stands 111 into a whole, and the setting of second beam column 13 connects two support arms 11 into a whole to improve the structural stability of whole support body 10. Meanwhile, a quadrangle is enclosed by the first beam column 12 and the second beam column 13 to be supported at the bottom of the sensor 400. Further, the first beam column 12 and the second beam column 13 are installed in the same horizontal plane. The horizontal plane is located at the top end of the upright 111; or at a distance down from the top end, where the top end of each upright 111 protrudes above mounting surface 101. When the second mode is adopted, part of the upright 111 protruding from the mounting surface 101 is arranged around the sensor 400 to play a role in limiting.

As shown in fig. 1 to 3, in some embodiments, the rack 10 further includes a position-limiting cover 14 disposed on a side of the mounting surface 101 away from the supporting arm 11, and the position-limiting cover 14 and the mounting surface 101 together enclose a receiving space 102 for receiving the sensor 400. The limit cover 14 is provided to cover the sensor 400 at the periphery side thereof to limit the installation of the sensor 400 and prevent the sensor from being detached from the mounting surface 101. In actual use, the number of the limiting covers 14 is multiple, and the multiple limiting covers 14 are arranged at intervals along the length direction of the rack body 10. The number of the position limiting covers 14 determines the number of the accommodating spaces 102, and thus the number of the sensors 400.

As shown in fig. 1, when the number of the accommodating space 102 is one, corresponding to four columns 111, the position-limiting cover 14 is fixedly disposed on the columns 111, and is engaged with the first beam column 12 and the second beam column 13. At this time, the bottom of the sensor 400 is erected on the first beam column 12 and the second beam column 13, the limiting cover 14 is covered on the circumferential side and the top of the sensor 400, and the length of the frame body 10 is the sum of the interval and the diameter of the two upright columns 111 in the single supporting arm 11.

As shown in fig. 2 and 3, when the number of the accommodating spaces 102 is five, five limit covers 14 are correspondingly arranged at intervals along the length direction of the rack body 10. At this time, four upright posts 111 may be correspondingly installed at the bottom of each limit cover 14; alternatively, four upright posts 111 are respectively arranged at the initial position of one limit cover 14 and the final position of one limit cover 14, and two upright posts 111 are correspondingly arranged at the bottom of the middle limit cover 14. When the second mode is adopted, not only is the cost saved, but also the good support performance of the frame body 10 is ensured; meanwhile, in this way, the single support arm 11 includes five columns 111, wherein two columns 111 near two sides are spaced relatively closely and spaced relatively far from the column 111 in the middle; moreover, in this way, the length of the adjusting base 20 is increased correspondingly, so long as it is ensured that each position of the mounting surface 101 along the length direction of the frame body 10 has a contact surface with the adjusting base 20.

As shown in fig. 1, in some embodiments, the position-limiting cover 14 includes a position-limiting enclosure 141 and a plurality of position-limiting columns 142, the plurality of position-limiting columns 142 are arranged at intervals around the circumference of the accommodating space 102 and connected to the supporting arms 11, the position-limiting enclosure 141 is connected to an end of the position-limiting column 142 away from the mounting surface 101, and the position-limiting enclosure 141 is used for limiting the movement of the sensor 400 along a side away from the pavement base 200. Specifically, the plurality of limiting columns 142 are used for limiting the movement of the sensor 400 in the horizontal direction, and the height of each limiting column 142 is slightly higher than the thickness of the sensor 400, so as to facilitate the assembly of the limiting barrier 141. The limiting fence 141 limits the upward movement of the sensor 400 in the height direction. The installation limitation of the sensor 400 is met through the matching of the limiting column 142 and the limiting enclosure 141, and the limiting column and the first beam column 12 and the second beam column 13 are combined with each other, so that the installation of the sensor 400 relative to the sensor installation support 100 is met, and the sensor 400 is ensured to be stably assembled and cannot be easily separated. Furthermore, the number of the limiting columns 142 is four, and four limiting columns 142 surround to form a four-frame structure.

As shown in fig. 1, in a specific embodiment, the position-limiting enclosure 141 includes at least two metal wires arranged in a cross manner, and two ends of each metal wire are respectively connected to two position-limiting columns 142 opposite to each other in the radial direction of the accommodating space 102. Taking the number of the limiting columns 142 as four as an example, at least one metal wire is connected between two limiting columns 142 which are opposite corners, so that the sensor 400 is limited upwards along the height direction. Or, three metal wires are connected between the two diagonal limiting columns 142 and arranged at intervals along the radial direction of the limiting columns 142, so that the limiting effect is improved. When the number of the limiting columns 142 is six, at least one metal wire is connected between two radially opposite limiting columns 142 which enclose the accommodating space 102. Wherein the metal wire can be a thin iron wire. In other embodiments, the position-limiting enclosure 141 may also be a cover plate movably connected to the position-limiting post 142.

When the supplement is needed, the upright 111, the first beam-column 12, the second beam-column 13 and the limiting column 142 all adopt thread steel bars. The twisted steel has high hardness, good durability, good abrasion resistance and shock resistance, and can improve the coupling performance with concrete.

As shown in fig. 5, another embodiment of the present invention further provides a pavement structure, which includes a pavement base 200, a pavement layer and the sensor mounting bracket 100, wherein the sensor 400 is mounted on the sensor mounting bracket 100, the sensor mounting bracket 100 is inserted into the pavement base 200, and the pavement layer covers the pavement assembly, the sensor mounting bracket 100 and the sensor 400. Through such setting, be equivalent to through sensor installing support 100 with sensor 400 direct implantation between road surface base 200 and the road surface layer, satisfy burying of sensor 400 relative road surface structure, and need not to dig the hole on the road surface, not only improve the protectiveness to the road surface, improve the road surface roughness moreover. Further, the pavement structure further includes a mat layer disposed under the pavement base 200 and a soil base disposed under the mat layer.

As shown in fig. 6, a further embodiment of the present invention further provides a pavement sensor assembling construction method, including the steps of: mounting the sensor 400 on the sensor mounting bracket 100; digging an insertion hole on the pavement base 200, inserting the bottom of the sensor mounting bracket 100 into the insertion hole, and pouring concrete into the insertion hole; and then paving a surface material on the pavement base layer 200 until the surface material completely covers the sensor mounting bracket 100, the sensor 400 and the pavement base layer 200 to form a pavement surface. Through such setting, can satisfy burying underground of sensor 400 relative road surface in the road surface construction simultaneously, and need not to pave at the road surface construction and pave the back or the road surface is slotted on the road surface after having put into use, improves the protectiveness to the road surface. And because the sensors 400 are embedded simultaneously in the road surface construction process, the flatness of the road surface is guaranteed.

Further, when the height of the sensor mounting bracket 100 reserved above the pavement base 200 is less than 20cm, after concrete is poured into the insertion hole, the waiting time is 11h-13h, and then the height adjusting seat 20 is taken out. The definition of the height ensures that the highest position of the sensor mounting bracket 100 is lower than the height of the roller 301 and the vibrating rod 302 of the slipform paver 300, thereby reducing disturbance to the sensor 400. Meanwhile, the concrete in the insertion hole is ensured to be completely solidified in a waiting static mode, and after the frame body 10 in the sensor mounting bracket 100 is stably mounted relative to the pavement base layer 200, the adjusting seat 20 is pulled away along the length direction of the frame body 10, so that the concrete can be laid in the later period. Further, when concrete is required to be laid, when the concrete is laid to a position 4.5m to 5.5m away from the sensor mounting bracket 100, the surface layer materials at the bottom and around the bracket body 10 are filled, and after the sensor mounting bracket 100 and the sensor 400 are completely covered, the surface layer materials are continuously laid on the road base layer 200. Therefore, the disturbance influence of the paving equipment on the sensor 400 can be further reduced, and more accurate data monitored by the sensor 400 can be ensured. Wherein, the surface material is concrete.

It should be noted that, as shown in fig. 1 to fig. 6, when the sensor mounting bracket 100 is applied to the pavement sensor assembling construction method, the specific operation flow is as follows:

first, the basic shape and the adaptive size of the frame body 10 are designed according to the number of the sensors 400 installed with respect to the road surface, and the twisted steel bars are cut according to the shape, size and height of the sensors 400 to prepare the first beam-column 12, the second beam-column 13, the stopper-column 142 and the upright column 111 having the same length, and then the upright column 111, the first beam-column 12, the second beam-column 13 and the stopper-column 142 are welded in combination according to the designed shapes to form the complete frame body 10. Then, the sensor 400 is placed in a space surrounded by the limiting columns 142, and wires are bound on the limiting columns 142 at opposite angles, so that the upward displacement limitation of the sensor 400 is met. In this manner, the fabrication of the sensor-mounting bracket 100 and the assembly of the sensor 400 to the sensor-mounting bracket 100 can be achieved.

Next, insertion holes corresponding to the number of the columns 111 and the pitch between the columns 111 are dug in the base course 200, the columns 111 are inserted into the corresponding insertion holes, and the adjustment seat 20 is interposed between the two adjacent support arms 11. The insertion depth of the vertical columns 111 relative to the pavement base 200 is adjusted by adjusting the telescopic length of the slider 22, typically at a position of less than 20cm from the pavement base 200 at the top of the frame 10. After the height of the frame body is adjusted to the target height, concrete is poured into each inserting hole, and after the frame body is stood for 12 hours, the adjusting seat 20 is taken out from one side of the length direction of the frame body 10.

And finally, paving the road base layer 200 by using the slipform paver 300, filling concrete at the bottom and the peripheral side of the frame body 10 when the slipform paver 300 moves to a distance of about 5m from the sensor mounting bracket 100 so that the whole frame body 10 and the sensor 400 are covered by the concrete, and then starting the slipform paver 300 to continue paving the road base layer 200.

Because the roller 301 is located approximately 30cm from the pavement base 200 and the vibrator rod 302 is located 20cm to 30cm from the pavement base 200 during operation of the slipform paver 300, the sensor mounting bracket 100 is mounted relative to the pavement to a height of less than 20cm, i.e., less than the height of the roller 301 and the vibrator rod 302, respectively, from the pavement base 200. Meanwhile, the frame body 10 is also connected by concrete reinforcement after being inserted against the pavement base 200. Therefore, the disturbance of the first row of rollers, the second row of rollers and the vibrating rod 302 of the slipform paver 300 to the sensor 400 can be better avoided by adopting the above mode, the installation plane level of the sensor 400 is ensured, the risks of pushing, overturning and the like to the sensor 400 in the construction process of the slipform paver 300 are avoided, and the accuracy of monitoring the vibration data of the sensor 400 is improved. Moreover, with the arrangement of the sensor mounting bracket 100, the device can be applied to various road surfaces and working conditions of monitoring requirements.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. A sensor mounting bracket, characterized in that the sensor mounting bracket (100) comprises:

a frame body (10) which is configured with a mounting surface (101) for mounting a sensor (400), and the part of the frame body (10) at the bottom of the mounting surface (101) is used for inserting a road base layer (200); the frame body (10) can move along the insertion direction relative to the pavement base (200) so as to enable the installation surface (101) to be close to or far away from the pavement base (200).

2. Sensor mounting bracket according to claim 1, characterized in that the frame body (10) comprises at least two opposite and spaced-apart support arms (11), one end of at least two of the support arms (11) being intended for insertion into the substrate (200), the mounting surface (101) being configured at the end of at least two of the support arms (11) facing away from the substrate (200);

sensor installing support (100) still including connect in regulation seat (20) of support body (10), just regulation seat (20) can be followed the direction of insertion extension or the shortening of support body (10) are in order to drive support body (10) remove.

3. The sensor mounting bracket according to claim 2, characterized in that the adjusting seat (20) is inserted between any two adjacent supporting arms (11), the bottom of the adjusting seat (20) is used for being placed on the road base (200), and the top of the adjusting seat (20) is in contact with the mounting surface (101);

when the adjusting seat (20) is in a contraction state, the height of the adjusting seat (20) is smaller than that of each supporting arm (11).

4. Sensor mounting bracket according to claim 2, characterized in that each support arm (11) comprises at least two uprights (111) arranged at intervals along a first direction, which is at an angle to the direction of spacing of the two support arms (11) and which is at an angle to the direction of extension and retraction of the adjustment seat (20).

5. The sensor mounting bracket according to claim 4, characterized in that a first beam column (12) is connected between any two adjacent upright columns (111) in the same support arm (11);

the frame body (10) further comprises a second beam column (13) connected between any two adjacent supporting arms (11), and the first beam column (12) and the second beam column (13) jointly enclose the mounting surface (101).

6. The sensor mounting bracket of claim 2, characterized in that the bracket body (10) further comprises a limiting cover (14) arranged on one side of the mounting surface (101) facing away from the supporting arm (11), and the limiting cover (14) and the mounting surface (101) jointly enclose a containing space (102) for containing a sensor (400).

7. The sensor mounting bracket of claim 6, wherein the retaining cap (14) comprises a retaining fence (141) and a plurality of retaining posts (142);

the limiting columns (142) are arranged around the circumference of the accommodating space (102) at intervals and connected to the supporting arms (11), the limiting surrounding baffle (141) is connected to one end, deviating from the mounting surface (101), of the limiting column (142), and the limiting surrounding baffle (141) is used for limiting the movement of the sensor (400) along one side deviating from the pavement base layer (200).

8. The sensor mounting bracket of claim 7, characterized in that the limiting enclosure (141) comprises at least two wires arranged crosswise, each of which has two ends connected to two limiting posts (142) diametrically opposite along the accommodation space (102), respectively.

9. The sensor mounting bracket of claim 7, characterized in that the number of the limiting covers (14) is multiple, and the limiting covers (14) are arranged at intervals along the length direction of the bracket body (10).

10. Sensor mounting bracket according to any of claims 2 to 9, characterized in that the adjustment seat (20) comprises a base (21), a slider (22) and a locking member (23);

base (21) are constructed with the slide opening, sliding body (22) hold locate in the slide opening and can slide in the slide opening, sliding body (22) stretch out the terminal surface top of slide opening touch in installation face (101), retaining member (23) are used for sliding body (22) remove to the target position after with sliding body (22) slide body (22) lock in base (21).

11. A pavement structure, comprising:

a base course (200);

the sensor mounting bracket of any one of claims 1 to 10, the sensor mounting bracket (100) being inserted into the pavement base (200) for mounting a sensor (400);

the pavement surface layer covers the pavement base layer (200) and the sensor mounting bracket (100).

12. The pavement sensor assembling construction method is characterized by comprising the following steps of:

mounting a sensor (400) on a sensor mounting bracket (100);

digging an insertion hole on a pavement base layer (200), inserting the bottom of the sensor mounting bracket (100) into the insertion hole, and pouring concrete in the hole;

paving a surface material on the pavement base layer (200) until the surface material completely covers the sensor mounting bracket (100), the sensor (400) and the pavement base layer (200) to form a pavement surface layer.

13. The pavement sensor assembling construction method according to claim 12, characterized in that when the height of the sensor mounting bracket (100) reserved above the pavement base (200) is less than 20cm, after pouring concrete into the insertion hole, the method waits for 11h-13h, and then takes out the height-adjusting seat (20).

14. The pavement sensor assembling construction method according to claim 12 or 13, characterized in that when concrete is laid, the concrete at the bottom and the peripheral side of the sensor mounting bracket (100) is filled when the concrete is laid to a position 4.5m-5.5m away from the sensor mounting bracket (100), and after the sensor mounting bracket (100) and the sensor (400) are completely covered, the pavement base layer (200) is continuously laid with the surface layer material.