CN111595497B - Fixed pier impact monitoring and early warning device and arrangement method thereof - Google Patents
Fixed pier impact monitoring and early warning device and arrangement method thereof Download PDFInfo
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- CN111595497B CN111595497B CN202010374365.6A CN202010374365A CN111595497B CN 111595497 B CN111595497 B CN 111595497B CN 202010374365 A CN202010374365 A CN 202010374365A CN 111595497 B CN111595497 B CN 111595497B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0052—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to impact
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
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Abstract
The invention discloses a fixed pier impact monitoring and early warning device and a layout method thereof, relates to the field of bridge pier structure health monitoring, and aims to solve the problem that in the prior art, stress borne by a pier structure cannot be well monitored, and meanwhile, effective early warning is carried out on collision borne by the pier due to the lack of data, so that the service life of the pier is shortened. The method is mainly used for monitoring the stress borne by the pier structure for a long time.
Description
Technical Field
The invention relates to the field of bridge pier structure health monitoring, in particular to a fixed bridge pier impact monitoring and early warning device and a layout method thereof.
Background
The rapid development of national economy and the continuous improvement of the living standard of people's materials in China make people increasingly demand convenient land transportation. The bridge structure is used as a link for marine and land transportation and is also constructed massively. According to the statistical data of China, the total number of the existing bridges in China is as high as fifty thousand, wherein the number of the large-span bridges exceeding a kilometer exceeds seven hundred, and more bridges make the collision accident of the bridge piers difficult to avoid.
With the rapid development of the traffic industry, the scale of ships tends to be large, the accident rate of ships impacting bridges is increased year by year, and the caused consequences are more serious. The light accident causes the damage of the pier structure, the service life is reduced, the additional maintenance and reinforcement cost is increased, and the serious accident causes the serious consequences such as bridge damage, people death, the obstruction or the interruption of the land and water traffic trunk line and the like.
Nowadays, people are also stricter and stricter to the construction of bridge structures, and the monitoring and protection of the bridge pier structures also arouse the extensive attention of experts in the industry, but the current research mostly focuses on the aspects of scouring of the bridge pier foundation structures, settlement of the bridge piers, collision protection of the bridge piers and the like, and the monitoring research on the stress borne by the bridge pier structures is insufficient. The pier structure has shortened service life under the conditions of water flow pressure, floater impact, even ship impact and the like. Therefore, the monitoring and protecting work of the pier structure is the direction in which engineering builders pay attention to, real-time data monitoring is carried out on the pier structure, accurate stress and strain values are obtained, and then the change rule between the impact stress and the fatigue life of the pier is very necessary to be explored.
Therefore, it is a problem that the technical staff in the field needs to solve urgently to develop a fixed pier impact monitoring and early warning device which can monitor the stress condition of the pier in real time for a long time, perform safety early warning on the collision danger of the pier, has strong adaptability and operability of the laying process, and cannot damage the structural performance of the pier.
Disclosure of Invention
The invention provides a fixed pier impact monitoring and early warning device and a layout method thereof, aiming at solving the problem that the service life of a pier is shortened due to the fact that the stress borne by a pier structure cannot be well monitored and the collision borne by the pier is effectively early warned due to the lack of data in the prior art;
a fixed pier impact monitoring and early warning device comprises N monitoring plate assemblies and N sounding pipe assemblies, wherein N is a positive integer, the N monitoring plate assemblies are sequentially arranged end to form a frame body, a sounding pipe assembly is arranged at the joint of every two adjacent monitoring plate assemblies, each sounding pipe assembly and one monitoring plate assembly are connected through two hinge pieces, and each monitoring plate assembly is fixedly connected with the side wall of a pier;
furthermore, the monitoring plate component comprises a bottom plate, a top plate, a rubber inner plate, a rubber outer plate, a glass fiber inner plate, a glass fiber outer plate, a reinforcing mesh, a fiber grating strain sensor mesh cage, a fiber grating strain sensor, two acceleration sensor mesh cages and two acceleration sensors, wherein the bottom plate, the rubber inner plate, the top plate and the rubber outer plate are sequentially connected end to form a rectangular frame body, the glass fiber inner plate, the glass fiber outer plate, the reinforcing mesh, the fiber grating strain sensor mesh cage, the fiber grating strain sensor, the two acceleration sensor mesh cages and the two acceleration sensors are all arranged in the rectangular frame body, the inner wall of the rubber inner plate is fixedly connected with the side wall of one side of the glass fiber inner plate, the side wall of the other side of the glass fiber inner plate is fixedly connected with the reinforcing mesh, and the reinforcing mesh is provided with the two acceleration sensor mesh cages and the fiber grating strain sensor mesh cage, the two acceleration sensor net cages are positioned above one fiber bragg grating strain sensor net cage, the distance from each acceleration sensor net cage to the fiber bragg grating strain sensor net cage is equal, each acceleration sensor is arranged in one acceleration sensor net cage, the fiber bragg grating strain sensors are arranged in the fiber bragg grating strain sensor net cages, the side wall of one side of a glass fiber outer plate is in contact with the two acceleration sensor net cages, the side wall of the other side of the glass fiber outer plate is fixedly connected with the inner wall of a rubber outer plate, the top surfaces of the glass fiber inner plate, the glass fiber outer plate and a reinforcing mesh are fixedly connected with a top plate, the bottom surfaces of the glass fiber inner plate, the glass fiber outer plate and the reinforcing mesh are fixedly connected with a bottom plate, and the rubber outer plate is connected with an acoustic pipe assembly through two hinge plates;
furthermore, the monitoring board assembly further comprises a plurality of array fiber gratings, the plurality of array fiber gratings are packaged in the glass fiber outer board, and the plurality of array fiber gratings are distributed at equal intervals along the width direction of the glass fiber outer board;
further, the rubber inner plate is fixedly connected to one side of the glass fiber inner plate in a fluidized manner, and the rubber outer plate is fixedly connected to one side of the glass fiber outer plate in a fluidized manner;
furthermore, one end of the acceleration sensor mesh cage is welded and fixed with the steel bar mesh, and one end of the fiber bragg grating strain sensor mesh cage is welded and fixed with the steel bar mesh;
furthermore, the size of the acceleration sensor cylinder mould is consistent with that of the acceleration sensor, the end face width of the fiber grating strain sensor cylinder mould is consistent with the end face diameter of the fiber grating strain sensor, the length of the fiber grating strain sensor cylinder mould is smaller than that of the fiber grating strain sensor, and the difference between the lengths of the fiber grating strain sensor cylinder mould and the fiber grating strain sensor is 4-5 cm;
further, an adhesive injection groove is formed in the top of the rubber inner plate, and a plurality of circular through holes are uniformly distributed in one side of the rubber inner plate;
furthermore, the sounding pipe assembly comprises a sounding pipe top cover, a bottoming sounding pipe and a sound wave detector, wherein the sound wave detector is arranged in the bottoming sounding pipe, a shell of the sound wave detector is fixedly connected with a bottom plate of the bottoming sounding pipe, the sounding pipe top cover is adhered to the top of the bottoming sounding pipe, and the bottoming sounding pipe is connected with a rubber outer plate through two hinge sheets;
furthermore, the cross section of the sound measuring tube with the bottom is fan-shaped, the central angle of the fan-shaped opposite to the central angle is 360/N degrees, and N is the number of the monitoring plate assemblies;
a layout method of a fixed pier impact monitoring and early warning device is realized by the following steps:
the method comprises the following steps: measuring the dimensions of four sides of a pier to be monitored, determining the length dimension of each monitoring plate component, and ensuring that the inner wall of each monitoring plate component is attached to the pier;
step two: determining the length sizes of the rubber inner plate, the rubber outer plate, the glass fiber inner plate, the glass fiber outer plate and the reinforcing mesh according to the length size of each monitoring plate component obtained in the step one, ensuring that the length sizes and the width sizes of the rubber inner plate, the rubber outer plate, the glass fiber inner plate, the glass fiber outer plate and the reinforcing mesh are consistent, packaging a plurality of arrayed fiber bragg gratings in the glass fiber outer plate, fluidizing and fixedly connecting the rubber inner plate to one side of the glass fiber inner plate, fixedly connecting the reinforcing mesh to the other side of the glass fiber inner plate, arranging two acceleration sensor cages and one fiber bragg grating strain sensor cage between the reinforcing mesh and the glass fiber outer plate, welding and fixing one end of each acceleration sensor cage and one end of one fiber bragg grating strain sensor cage to the reinforcing mesh, arranging each acceleration sensor in one acceleration sensor cage, each fiber grating strain sensor is arranged in a fiber grating strain sensor mesh cage, one end of each acceleration sensor mesh cage and a signal receiving end of each fiber grating strain sensor are in contact with one side of a glass fiber outer plate, the other side of the glass fiber outer plate is fixedly connected to a rubber outer plate in a fluidized mode, the bottom surfaces of a rubber inner plate, a rubber outer plate, a glass fiber inner plate, a glass fiber outer plate and a reinforcing mesh are fixedly connected to the upper surface of a bottom plate, and the manufacturing of the single monitoring plate assembly is completed, and other monitoring plate assemblies are manufactured in the same connection mode;
step three: determining the size of the acoustic pipe assembly according to the thickness of the single monitoring plate assembly and the size of the acoustic wave detector in the second step, wherein the thickness of the single monitoring plate assembly is the width of the side wall of the bottom acoustic pipe in the acoustic pipe assembly, each acoustic wave detector is arranged in one bottom acoustic pipe, and the top of each bottom acoustic pipe is bonded with an acoustic pipe top cover for sealing, so that the single acoustic pipe assembly is manufactured, and the rest acoustic pipe assemblies are manufactured in the same connection mode;
step four: the contact part of each side wall of the sounding pipe with the bottom in each sounding pipe assembly in the third step and the arc surface wall is hinged with two hinge pieces, the two hinge pieces are arranged along the length direction of the sounding pipe assembly, and each sounding pipe assembly and the four hinge pieces form a hinge shaft;
step five: utilize hinge shaft in step four to connect the monitoring board subassembly of adjacent both sides respectively to make every monitoring board subassembly laminate on the pier wall, and pour into the injecting glue groove with good mobility's glue, glue can flow downwards along injecting glue groove depth direction, and it is fixed with the pier structure bonding through every circular through-hole, the rubber inner panel, the rubber planking, the glass fiber inner panel, the top surface of glass fiber planking and reinforcing bar net all is fixed with the roof bonding, constitute the monitoring devices of cladding pier perisporium.
Compared with the prior art, the invention has the following beneficial effects:
1. the fixed pier impact monitoring and early warning device and the arrangement method thereof provided by the invention monitor the impact stress and the position of the bridge pier, and meet the requirement of long-term real-time monitoring on the pier in the field of bridge engineering.
2. According to the fixed pier impact monitoring and early warning device, the sound wave detection technology is adopted, so that collision danger early warning can be performed on a pier structure, and the safety of the whole bridge structure is effectively guaranteed.
3. The fixed pier impact monitoring and early warning device provided by the invention adopts the array fiber bragg grating, has high sensitivity and good chemical stability, and can realize long-term networking impact stress monitoring.
4. According to the fixed pier impact monitoring and early warning device provided by the invention, multiple closed protection measures such as the bottom plate, the top plate and the top cover are adopted, so that the tightness of the device is enhanced, the damage rate is reduced, and the service life is prolonged.
5. The fixed pier impact monitoring and early warning device provided by the invention integrally adopts the high-elasticity rubber plate as the protective layer, so that the damage of foreign object impact on the pier can be effectively reduced, and the pier structure is protected while monitoring.
6. The fixed pier impact monitoring and early warning device provided by the invention adopts a fixed structure, and can reflect the rising and falling changes of the water level height according to the monitoring result of the impact stress position, so that the real-time monitoring of the river water level is realized.
7. The fixed pier impact monitoring and early warning device and the arrangement method thereof adopt an assembling and fixing mode, are convenient to arrange, simple in process and strong in operability, and do not affect the structural performance of the pier.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a front view of the inner layer structure of the monitoring plate assembly of the present invention;
FIG. 3 is a top view of the inner layer structure of the monitoring plate assembly of the present invention;
FIG. 4 is a perspective view of the inner layer structure of the monitoring plate assembly of the present invention;
FIG. 5 is a front view of the array fiber grating package of the present invention;
FIG. 6 is a top plan view of the acoustic tube assembly and the monitoring plate assembly of the present invention assembled together;
FIG. 7 is a side view of the acoustic tube assembly and monitoring plate assembly of the present invention in a spliced configuration;
FIG. 8 is a perspective view of the acoustic pipe assembly and the monitor plate assembly of the present invention assembled together;
fig. 9 is an overall view illustrating the present invention applied to a cylindrical pier;
fig. 10 is a schematic front view illustrating installation of respective sensors in a single monitoring plate assembly when the present invention is applied to a cylindrical pier;
fig. 11 is a schematic top view of the installation of each sensor in a single monitoring plate assembly when the present invention is applied to a cylindrical pier;
the figure comprises a bottom plate 1, a top plate 2, a sound measuring pipe top pipe 3, a rubber inner plate 4, a rubber outer plate 5, a glass fiber inner plate 6, a glass fiber outer plate 7, a reinforcing mesh 8, an acceleration sensor mesh cage 9, a fiber grating strain sensor mesh cage 10, a sound measuring pipe with a bottom 11, an array fiber grating 12, an acceleration sensor 13, a fiber grating strain sensor 14, a sound wave detecting instrument 15, a hinge sheet 16, a glue injection groove 17 and a circular through hole 18.
Detailed Description
The first embodiment is as follows: the embodiment is described with reference to fig. 1, and provides a fixed pier impact monitoring and early warning device, the monitoring and early warning device comprises N monitoring plate assemblies and N sounding pipe assemblies, wherein N is a positive integer, the N monitoring plate assemblies are sequentially arranged end to form a frame body, a sounding pipe assembly is arranged at the joint of every two adjacent monitoring plate assemblies, each sounding pipe assembly and each monitoring plate assembly are connected through two hinge pieces 16, and each monitoring plate assembly is fixedly connected with a pier side wall.
The working principle of the fixed pier impact monitoring and early warning device provided by the invention is that the array fiber bragg grating in the monitoring plate component is used for accurately monitoring the stress and the position of a pier structure in real time for a long time, the acceleration sensor in the monitoring plate component is used for monitoring the speed and the acceleration of water flow, floating ice and a ship in real time, and the sound wave detector in the sound detection pipe component is used for carrying out safety early warning on the collision condition of the pier which possibly occurs, so that the safety of the whole bridge structure is effectively ensured.
The second embodiment is as follows: the present embodiment is described with reference to fig. 2 to 6, and is further limited to the monitoring plate assembly described in the first embodiment, in the present embodiment, the monitoring plate assembly includes a bottom plate 1, a top plate 2, a rubber inner plate 4, a rubber outer plate 5, a glass fiber inner plate 6, a glass fiber outer plate 7, a steel mesh 8, a fiber grating strain sensor cage 10, a fiber grating strain sensor 14, two acceleration sensor cages 9 and two acceleration sensors 13, the bottom plate 1, the rubber inner plate 4, the top plate 2 and the rubber outer plate 5 are connected end to end in sequence to form a rectangular frame, the glass fiber inner plate 6, the glass fiber outer plate 7, the steel mesh 8, the fiber grating strain sensor cage 10, the fiber grating strain sensor 14, the two acceleration sensor cages 9 and the two acceleration sensors 13 are all disposed in the rectangular frame, the inner wall of the rubber inner plate 4 is fixedly connected with the side wall of one side of the glass fiber inner plate 6, the side wall of the other side of the glass fiber inner plate 6 is fixedly connected with a reinforcing mesh 8, the reinforcing mesh 8 is provided with two acceleration sensor mesh cages 9 and a fiber grating strain sensor mesh cage 10, the two acceleration sensor mesh cages 9 are positioned above the fiber grating strain sensor mesh cage 10, the distance from each acceleration sensor mesh cage 9 to the fiber grating strain sensor mesh cage 10 is equal, each acceleration sensor 13 is arranged in one acceleration sensor mesh cage 9, the fiber grating strain sensor 14 is arranged in the fiber grating strain sensor mesh cage 10, the side wall of one side of the glass fiber outer plate 7 is contacted with the two acceleration sensor mesh cages 9, the side wall of the other side of the glass fiber outer plate 7 is fixedly connected with the inner wall of the rubber outer plate 5, the glass fiber inner plate 6, The top surfaces of the glass fiber outer plate 7 and the reinforcing mesh 8 are fixedly connected with the top plate 2, the bottom surfaces of the glass fiber inner plate 6, the glass fiber outer plate 7 and the reinforcing mesh 8 are fixedly connected with the bottom plate 1, and the rubber outer plate 5 is connected with an acoustic testing pipe assembly through two hinge plates 16. Other components and connection modes are the same as those of the first embodiment.
In the embodiment, the rubber inner plate 4 is made of a rubber material with excellent high elasticity, corrosion resistance, durability and geometric deformability, the glass fiber inner plate 6 is made of a material with larger specific strength, specific modulus and excellent durability, and the width and the height of the rubber inner plate 4 and the glass fiber inner plate 6 are consistent with the width of a rectangular pier surface, so that the device is ensured to be attached to the pier surface;
the width and the height of the reinforcing mesh 8 are consistent with those of the glass fiber inner plate 6, and the reinforcing mesh 8 is adhered and fixed on the glass fiber inner plate 6 in a gluing or welding mode to be used as a hollow support framework of the plate body structure. The acceleration sensor cages 9 are sized in accordance with the selected acceleration sensors 13 and are attached to the mesh reinforcement 8 depending on the deployment position of the acceleration sensors 13. The width of the fiber grating strain sensor mesh cage 10 is consistent with that of the selected fiber grating strain sensor 14, and the fiber grating strain sensor mesh cage is fixedly connected to the steel bar mesh 8 according to the arrangement position of the fiber grating strain sensor 14.
The third concrete implementation mode: the present embodiment is described with reference to fig. 5, and is further limited to the monitoring plate assembly according to the first embodiment, in the present embodiment, the monitoring plate assembly further includes a plurality of arrayed fiber gratings 12, the plurality of arrayed fiber gratings 12 are encapsulated in the glass fiber outer plate 7, and the plurality of arrayed fiber gratings 12 are equidistantly distributed along the width direction of the glass fiber outer plate 7. The other components and the connection mode are the same as those of the second embodiment.
In this embodiment, the array fiber bragg gratings 12 are encapsulated in the glass fiber outer plate 7, and three array fiber bragg gratings 12 are arranged along the depth direction of the glass fiber outer plate 7. The purpose is that can long-term real-time supervision pier external force to through the three array fiber grating of depth direction, the accurate external force action position that calculates, it is accurate effective to monitor.
The fourth concrete implementation mode: the present embodiment will be described with reference to fig. 3 and 4, and the present embodiment further defines the rubber inner panel 4 described in the second embodiment, and in the present embodiment, the rubber inner panel 4 is fluidized and fixed to one side of the glass fiber inner panel 6, and the rubber outer panel 5 is fluidized and fixed to one side of the glass fiber outer panel 7. Other components and connection modes are the same as those of the first embodiment.
In the embodiment, the rubber inner plate 4 is covered and consolidated on the inner side of the glass fiber inner plate 6 in a fluidization mode, so that the glass fiber plate structure is protected, and meanwhile, the rubber inner plate 4 can effectively reduce the damage of foreign object impact on the bridge pier. With rubber inner panel 4, glass fiber inner panel 6 consolidation on bottom plate 1, form lower extreme enclosed construction, rubber planking 5 and glass fiber planking 7 set up with the same reason, the purpose is as the injury of the outside protective layer of device side panel body structure to pier structure, guarantees the accuracy of device to pier impact monitoring, the life of extension device.
The fifth concrete implementation mode: the present embodiment is described with reference to fig. 2 to 4, and the present embodiment further defines the acceleration sensor netpen 9 according to the second embodiment, in the present embodiment, one end of the acceleration sensor netpen 9 is welded and fixed to the steel mesh 8, and one end of the fiber grating strain sensor netpen 10 is welded and fixed to the steel mesh 8. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the acceleration sensor 13 is placed in the acceleration sensor net cage 9, and the bottom surface of the acceleration sensor 13 is tangent to and fixedly connected with the steel bar net 8. The fiber grating strain sensor 14 is placed in the fiber grating strain sensor mesh cage 10, and the bottom surface of the fiber grating strain sensor is tangent to and fixedly connected with the steel bar mesh 8. The purpose has carried out the restriction through sensor cylinder mould structure to the position of sensor fixed, and the preventing device takes place offset when receiving external force and assault, and then unable normal monitoring.
The sixth specific implementation mode: the present embodiment is described with reference to fig. 2 and 4, and is further limited to the acceleration sensor cage 9 according to the second embodiment, in the present embodiment, the size of the acceleration sensor cage 9 is the same as the size of the acceleration sensor 13, the end face width of the fiber grating strain sensor cage 10 is the same as the end face diameter of the fiber grating strain sensor 14, the length of the fiber grating strain sensor cage 10 is smaller than the length of the fiber grating strain sensor 14, and the difference between the lengths of the fiber grating strain sensor cage 10 and the fiber grating strain sensor 14 is 4-5 cm. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the length of the fiber grating strain sensor netpen 10 is smaller than that of the fiber grating strain sensor 14, so as to expose the sensing part of the fiber grating strain sensor 14, and avoid the monitoring effect of the fiber grating strain sensor 14 from being affected by the overlong netpen.
The seventh embodiment: referring to fig. 1, this embodiment is described, and the rubber inner plate 4 of the second embodiment is further limited in this embodiment, a rubber injection groove 17 is processed on the top of the rubber inner plate 4, a plurality of circular through holes 18 are uniformly distributed on one side of the rubber inner plate 4, and the rubber injection groove 17 is communicated with each circular through hole 18. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, glue of being convenient for pours into rubber inner panel 4 into along the groove 17 of glue injection to flow out from every circular through-hole 18, contact and bond fixedly with the pier structure, the staff only need pour into glue into from the upper portion of rubber inner panel 4, just can realize horizontal bonding fixedly, the construction of being convenient for.
The specific implementation mode is eight: the present embodiment is described with reference to fig. 1 and 8, and is further limited to the sounding pipe assembly according to the first embodiment, in the present embodiment, the sounding pipe assembly includes a sounding pipe top cover 3, a bottomed sounding pipe 11, and a sound wave detector 15, the sound wave detector 15 is disposed in the bottomed sounding pipe 11, a housing of the sound wave detector 15 is fixedly connected to a bottom plate of the bottomed sounding pipe 11, the sounding pipe top cover 3 is adhered to a top portion of the bottomed sounding pipe 11, and the bottomed sounding pipe 11 is connected to one rubber outer plate 5 through two hinge plates 16. Other components and connection modes are the same as those of the first embodiment.
In this embodiment, the hinge sheet 16 is connected with the bottom sounding pipe 11 to form a hinge shaft, in order to ensure the tight connection between the bottom sounding pipe 11 and the monitoring plate structure, and the hinge shaft formed by the bottom sounding pipe 11 and the hinge sheet 16 connects the adjacent monitoring plate assemblies on two sides respectively to be attached to the wall of the pier, thereby forming the monitoring device for covering the peripheral wall of the rectangular pier. Further, the top plate 2 is fixedly bonded on the top surface of the monitoring plate, and the top cover 3 of the sounding pipe is fixedly bonded on the top surface of the sounding pipe 11 with the bottom, so that a complete sealing structure of the device is ensured.
The specific implementation method nine: the present embodiment is described with reference to fig. 1 and 8, and is further limited to the bottom acoustic pipe 11 according to the specific embodiment, in the present embodiment, the cross section of the bottom acoustic pipe 11 is a sector, the central angle of the sector is 360/N °, and N is the number of monitoring plate assemblies.
This embodiment is only to with the polygon prism pier for, cylindrical pier, and the board type of single monitoring board subassembly sets up for the arc, takes end sounding pipe 11 also to cylindrical body, also sets up for the arc for the sealed contact surface of single monitoring board subassembly of connection and end sounding pipe 11.
The detailed implementation mode is ten: the present embodiment is described with reference to fig. 1 to 8, and provides a layout method of a fixed pier impact monitoring and early warning device, which is implemented by the following steps:
the method comprises the following steps: measuring the dimensions of four sides of a pier to be monitored, determining the length dimension of each monitoring plate component, and ensuring that the inner wall of each monitoring plate component is attached to the pier;
step two: determining the length dimensions of the rubber inner plate 4, the rubber outer plate 5, the glass fiber inner plate 6, the glass fiber outer plate 7 and the reinforcing mesh 8 according to the length dimension of each monitoring plate component obtained in the step one, ensuring that the length dimensions and the width dimensions of the rubber inner plate 4, the rubber outer plate 5, the glass fiber inner plate 6, the glass fiber outer plate 7 and the reinforcing mesh 8 are consistent, encapsulating a plurality of arrayed fiber bragg gratings 12 in the glass fiber outer plate 7, fluidizing and fixedly connecting the rubber inner plate 4 to one side of the glass fiber inner plate 6, fixedly connecting the reinforcing mesh 8 to the other side of the glass fiber inner plate 6, arranging two acceleration sensor cages 9 and one fiber bragg grating strain sensor cage 10 between the reinforcing mesh 8 and the glass fiber outer plate 7, welding and fixing one end of each acceleration sensor cage 9 and one end of one fiber bragg grating strain sensor cage 10 to the reinforcing mesh 8, each acceleration sensor 13 is arranged in an acceleration sensor cylinder mould 9, each fiber grating strain sensor 14 is arranged in a fiber grating strain sensor cylinder mould 10, one end of each acceleration sensor cylinder mould 9 and the signal receiving end of one fiber grating strain sensor 14 are both contacted with one side of the glass fiber outer plate 7, the other side of the glass fiber outer plate 7 is fluidized and fixedly connected on the rubber outer plate 5, the bottom surfaces of the rubber inner plate 4, the rubber outer plate 5, the glass fiber inner plate 6, the glass fiber outer plate 7 and the reinforcing mesh 8 are fixedly connected on the upper surface of the bottom plate 1, so that the manufacturing of a single monitoring plate assembly is completed, and the other monitoring plate assemblies are manufactured in the same connection mode;
step three: determining the size of the sounding pipe assembly according to the thickness of the single monitoring board assembly in the step two and the size of the sound wave detector 15, wherein the thickness of the single monitoring board assembly is the width of the side wall of the bottom-carrying sounding pipe 11 in the sounding pipe assembly, each sound wave detector 15 is arranged in one bottom-carrying sounding pipe 11, and a sounding pipe top cover 3 is bonded to the top of each bottom-carrying sounding pipe 11 for sealing, so that the single sounding pipe assembly is manufactured, and the rest sounding pipe assemblies are manufactured in the same connection mode;
step four: two hinge sheets 16 are hinged to the contact part of each side wall and the arc surface wall of each sounding pipe 11 with the bottom in each sounding pipe assembly in the third step, the two hinge sheets 16 are arranged along the length direction of the sounding pipe assembly, and each sounding pipe assembly and the four hinge sheets 16 form a hinge shaft;
step five: the hinge shafts in the fourth step are utilized to respectively connect the monitoring plate assemblies on two adjacent sides, each monitoring plate assembly is attached to the wall of the pier, glue with good flowability is injected into the glue injection groove 17, the glue can flow downwards along the depth direction of the glue injection groove 17 and is fixedly bonded with the pier structure through each circular through hole 18, and finally, the top surfaces of the rubber inner plate 4, the rubber outer plate 5, the glass fiber inner plate 6, the glass fiber outer plate 7 and the reinforcing mesh 8 are fixedly bonded with the top plate 2 to form the monitoring device for coating the peripheral wall of the pier.
Claims (9)
1. The utility model provides a fixed pier strikes monitoring and early warning device, monitoring and early warning device includes a N monitoring board subassembly and a N sounding pipe subassembly, and N is the positive integer, a N monitoring board subassembly is arranged in proper order end to end and is formed the framework, and the junction of two adjacent monitoring board subassemblies is equipped with a sounding pipe subassembly, and every sounding pipe subassembly and a monitoring board subassembly link to each other its characterized in that through two hinge pieces (16): the monitoring plate component comprises a bottom plate (1), a top plate (2), a rubber inner plate (4), a rubber outer plate (5), a glass fiber inner plate (6), a glass fiber outer plate (7), a reinforcing mesh (8), a fiber grating strain sensor mesh cage (10), a fiber grating strain sensor (14), two acceleration sensor mesh cages (9) and two acceleration sensors (13), wherein the bottom plate (1), the rubber inner plate (4), the top plate (2) and the rubber outer plate (5) are sequentially connected end to form a rectangular frame body, the glass fiber inner plate (6), the glass fiber outer plate (7), the reinforcing mesh (8), the fiber grating strain sensor mesh cage (10), the fiber grating strain sensor (14), the two acceleration sensor mesh cages (9) and the two acceleration sensors (13) are all arranged in the rectangular frame body, the inner wall of the rubber inner plate (4) is fixedly connected with the side wall of the glass fiber inner plate (6), the other side wall of the glass fiber inner plate (6) is fixedly connected with a steel bar mesh (8), the steel bar mesh (8) is provided with two acceleration sensor mesh cages (9) and a fiber grating strain sensor mesh cage (10), the two acceleration sensor mesh cages (9) are positioned above the fiber grating strain sensor mesh cage (10), the distance between each acceleration sensor mesh cage (9) and the acceleration sensor mesh cage (9) is equal, each acceleration sensor (13) is arranged in one acceleration sensor mesh cage (9), the fiber grating strain sensor (14) is arranged in the fiber grating strain sensor mesh cage (10), one side wall of the glass fiber outer plate (7) is contacted with the two acceleration sensor mesh cages (9), the other side wall of the glass fiber outer plate (7) is fixedly connected with the inner wall of the rubber outer plate (5), the top surfaces of the glass fiber inner plate (6), the glass fiber outer plate (7) and the reinforcing mesh (8) are fixedly connected with the top plate (2), the bottom surfaces of the glass fiber inner plate (6), the glass fiber outer plate (7) and the reinforcing mesh (8) are fixedly connected with the bottom plate (1), and the rubber outer plate (5) is connected with an acoustic testing pipe assembly through two hinge sheets (16).
2. The fixed pier impact monitoring and early warning device according to claim 1, wherein: the monitoring plate component further comprises a plurality of array fiber gratings (12), the array fiber gratings (12) are packaged in the glass fiber outer plate (7), and the array fiber gratings (12) are distributed along the width direction of the glass fiber outer plate (7) at equal intervals.
3. The fixed pier impact monitoring and early warning device according to claim 2, wherein: the rubber inner plate (4) is fixedly connected to one side of the glass fiber inner plate (6) in a fluidized manner, and the rubber outer plate (5) is fixedly connected to one side of the glass fiber outer plate (7) in a fluidized manner.
4. The fixed pier impact monitoring and early warning device according to claim 3, wherein: one end of the acceleration sensor mesh cage (9) is welded and fixed with the steel bar mesh (8), and one end of the fiber bragg grating strain sensor mesh cage (10) is welded and fixed with the steel bar mesh (8).
5. The fixed pier impact monitoring and early warning device according to claim 4, wherein: the size of the acceleration sensor cylinder mould (9) is consistent with that of the acceleration sensor (13), the end face width of the fiber grating strain sensor cylinder mould (10) is consistent with the end face diameter of the fiber grating strain sensor (14), the length of the fiber grating strain sensor cylinder mould (10) is smaller than that of the fiber grating strain sensor (14), and the length difference between the fiber grating strain sensor cylinder mould (10) and the fiber grating strain sensor (14) is 4-5 cm.
6. The fixed pier impact monitoring and early warning device according to claim 5, wherein: the top of the rubber inner plate (4) is provided with a glue injection groove (17), and one side of the rubber inner plate (4) is uniformly provided with a plurality of circular through holes (18).
7. The fixed pier impact monitoring and early warning device according to claim 6, wherein: the acoustic survey pipe subassembly includes acoustic survey pipe top cap (3), takes end acoustic survey pipe (11) and sound wave detection instrument (15), sound wave detection instrument (15) set up in taking end acoustic survey pipe (11), and the casing of sound wave detection instrument (15) and the bottom plate fixed connection of taking end acoustic survey pipe (11), and acoustic survey pipe top cap (3) bond at the top of taking end acoustic survey pipe (11), and take end acoustic survey pipe (11) to link to each other with a rubber planking (5) through two hinge pieces (16).
8. The fixed pier impact monitoring and early warning device according to claim 7, wherein: the cross section of the sound measuring tube (11) with the bottom is fan-shaped, the central angle of the fan-shaped opposite circle is 360/N degrees, and N is the number of the monitoring plate assemblies.
9. There is provided a layout method using the impact monitoring and warning device for fixed piers as set forth in claim 8, wherein: the layout method is realized by the following steps:
the method comprises the following steps: measuring the dimensions of four sides of a pier to be monitored, determining the length dimension of each monitoring plate component, and ensuring that the inner wall of each monitoring plate component is attached to the pier;
step two: determining the length size of a rubber inner plate (4), a rubber outer plate (5), a glass fiber inner plate (6), a glass fiber outer plate (7) and a reinforcing mesh (8) according to the length size of each monitoring plate component obtained in the step one, ensuring that the length sizes of the rubber inner plate (4), the rubber outer plate (5), the glass fiber inner plate (6), the length sizes and the width sizes of the glass fiber outer plate (7) and the reinforcing mesh (8) are consistent, packaging a plurality of array fiber bragg gratings (12) in the glass fiber outer plate (7), fixedly connecting the rubber inner plate (4) to one side of the glass fiber inner plate (6) in a fluidized mode, fixedly connecting the reinforcing mesh (8) to the other side of the glass fiber inner plate (6), arranging two acceleration sensor mesh cages (9) and one fiber bragg grating strain sensor mesh cage (10) between the reinforcing mesh (8) and the glass fiber outer plate (7), and arranging one end of each acceleration sensor mesh cage (9) and one fiber grating strain sensor mesh cage (10) One end of each acceleration sensor (13) is welded and fixed with the steel bar mesh (8), each fiber grating strain sensor (14) is arranged in one acceleration sensor mesh cage (9), one end of each acceleration sensor mesh cage (9) and the signal receiving end of one fiber grating strain sensor (14) are in contact with one side of the glass fiber outer plate (7), the other side of the glass fiber outer plate (7) is fixedly connected to the rubber outer plate (5) in a fluidized mode, and the bottom surfaces of the rubber inner plate (4), the rubber outer plate (5), the glass fiber inner plate (6), the glass fiber outer plate (7) and the steel bar mesh (8) are fixedly connected to the upper surface of the bottom plate (1) until the manufacture of a single monitoring plate assembly is completed, and other monitoring plate assemblies are manufactured in the same connection mode;
step three: determining the size of the acoustic measurement pipe assembly according to the thickness of the single monitoring plate assembly in the step two and the size of the acoustic wave detector (15), wherein the thickness of the single monitoring plate assembly is the width of the side wall of the bottom acoustic measurement pipe (11) in the acoustic measurement pipe assembly, each acoustic wave detector (15) is arranged in one bottom acoustic measurement pipe (11), and a top cover (3) of the acoustic measurement pipe is bonded to the top of each bottom acoustic measurement pipe (11) for sealing, so far, the single acoustic measurement pipe assembly is manufactured, and other acoustic measurement pipe assemblies are manufactured in the same connection mode;
step four: the contact part of each side wall of the sounding pipe (11) with the bottom in each sounding pipe assembly in the third step and the arc surface wall is hinged with two hinge pieces (16), the two hinge pieces (16) are arranged along the length direction of the sounding pipe assembly, and each sounding pipe assembly and the four hinge pieces (16) form a hinge shaft;
step five: utilize hinge axle in the fourth step to connect the monitoring board subassembly of adjacent both sides respectively, and make every monitoring board subassembly laminate on the pier wall, and pour into injecting glue groove (17) with good mobility, glue can follow injecting glue groove (17) degree of depth direction downflow, and it is fixed with pier structure bonding through every circular through-hole (18), at last again with rubber inner panel (4), rubber planking (5), glass fiber inner panel (6), the top surface of glass fiber planking (7) and reinforcing bar net (8) all with roof (2) bonding, constitute the monitoring devices of cladding pier perisporium.
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