CN111855245A - Vehicle-mounted movable type measuring point scanning sensing device for bridge vibration displacement measurement and measuring method - Google Patents

Vehicle-mounted movable type measuring point scanning sensing device for bridge vibration displacement measurement and measuring method Download PDF

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Publication number
CN111855245A
CN111855245A CN202010639569.8A CN202010639569A CN111855245A CN 111855245 A CN111855245 A CN 111855245A CN 202010639569 A CN202010639569 A CN 202010639569A CN 111855245 A CN111855245 A CN 111855245A
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China
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laser
vehicle
sensor
bridge
long
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CN202010639569.8A
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CN111855245B (en
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曲春绪
伊廷华
李宏男
马树伟
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Dalian Lailibai Information Technology Co ltd
Dalian University of Technology
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Dalian Lailibai Information Technology Co ltd
Dalian University of Technology
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/004—Testing the effects of speed or acceleration
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/026—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness by measuring distance between sensor and object
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
    • G01H17/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves, not provided for in the preceding groups

Abstract

The invention belongs to the technical field of bridge structure vibration testing, and relates to a vehicle-mounted movable type measuring point scanning sensing device and a measuring method for bridge vibration displacement measurement. The invention discloses a vehicle-mounted movable measuring point scanning device for measuring bridge vibration displacement, which comprises a force balance type vibration sensor, a bidirectional tilt angle sensor, a sensor connecting shell, a long 2D laser profiler, a circular level, a short 2D laser profiler, a sensing platform and a connecting column. The invention realizes the full-bridge covering type dense measuring point vibration rapid test on each point of the bridge on the advancing line in the process of uninterrupted vehicle driving.

Description

Vehicle-mounted movable type measuring point scanning sensing device for bridge vibration displacement measurement and measuring method
Technical Field
The invention belongs to the technical field of bridge structure vibration testing, and relates to a vehicle-mounted movable type measuring point scanning sensing device and a measuring method for bridge vibration displacement measurement.
Background
In order to ensure the safety of the bridge structure, the bridge structure needs to be detected regularly, in the detection project, the bridge vibration test is an important part, the bridge vibration test is used for obtaining modal parameters of the bridge structure, such as the frequency, the vibration mode, the damping ratio and the like of the bridge structure, the modal parameters reflect the dynamic characteristics of the structure, and the service state of the bridge structure is usually judged through the modal parameters.
The conventional detection method is to finish the vibration test by manually arranging sensors in advance and performing cooperative operation by multiple persons, and the common test method comprises the steps of knocking a bridge by a hammer, performing a jump experiment, a driving experiment and the like, wherein the knocking by the hammer is performed through manual operation, so that the hammer strikes the bridge floor, and the vibration information of the bridge is acquired through the sensors arranged on the bridge in advance; in the jumping experiment, a detector drives a heavy vehicle, the vehicle jumps through a wood wedge temporarily placed on a bridge, so that the bridge is driven to vibrate, and a sensor arranged on the bridge acquires vibration information; the driving experiment is that the bridge is passed through to the detection personnel drive car to before driving, settle the sensor on the bridge in advance, the sensor is at the driving period, acquires the vibration signal. After the vibration information is obtained by the method, the modal parameter which can reflect the dynamic characteristic of the structure is obtained by using the modal parameter identification method, so that the abnormity can be compared, and the decision maintenance is carried out.
However, the conventional detection method requires arranging sensors on the bridge in advance, which involves manual sensor installation and wiring operations, and if the number of sensors is limited, the sensors are required to be disassembled to be arranged in different areas, which occupies a large amount of labor and time cost, so that a bridge vibration test sensing device capable of achieving the purpose of rapidness and convenience is required to be found.
Disclosure of Invention
The invention aims to develop a vehicle-mounted movable type measuring point scanning sensing device to realize the rapid measurement of bridge vibration, and particularly relates to a problem of how to acquire bridge vibration information in a vehicle-mounted movable type measuring point scanning mode.
The technical scheme of the invention is as follows:
a vehicle-mounted movable type measuring point scanning sensing device for bridge vibration displacement measurement comprises a force balance type vibration sensor 1, a bidirectional tilt sensor 2, a sensor connecting shell 3, a long 2D laser profiler 4, a circular level 5, a short 2D laser profiler 6, a sensing platform 7 and a connecting column 8;
the force balance type vibration sensor 1 is used for measuring displacement, speed and acceleration; the long 2D laser profiler 4 is used for measuring the distance from the sensor to the road surface, the force balance type vibration sensor 1 can emit long line laser, and the long 2D laser profiler 4 can measure the displacement in the long line laser range; the short 2D laser profiler 6 has the same function as the long 2D laser profiler 4, and only the line laser lengths are different;
the sensor connecting shell 3 is a shell with a hard surface and a hollow interior, is connected to the sensing platform 7 in an embedded manner, and the sensing platform 7 is provided with a plurality of sensor connecting shells 3;
the upper surface of the sensing platform 7 is fixedly connected with a vehicle 9 through a connecting column 8;
The force balance type vibration sensor 1 is fixedly connected to the upper surface of the sensor connecting shell 3, the bidirectional tilt angle sensor 2 is arranged in and fixed inside the sensor connecting shell 3, and the circular level 5 is fixed on the sensor connecting shell 3.
Long 2D laser profile appearance 4 is along vertical fixed connection in sensing platform 7 lower surface, and short 2D laser profile appearance 6 is along horizontal fixed connection in sensing platform 7 lower surface, and is perpendicular with long 2D laser profile appearance 4, and the front end of sensing platform 7 is placed and is no less than 2, and the rear end is placed and is no less than 1, and the centre is add short 2D laser profile appearance 6 according to the demand.
The invention has the beneficial effects that: the full-bridge covering type intensive measuring point vibration rapid test is realized for each point of the bridge on the advancing line in the process of uninterrupted vehicle driving.
Drawings
FIG. 1 is a schematic view of the upper surface of a sensing platform.
Fig. 2 is a schematic diagram of the positional relationship of the sensors.
FIG. 3 is a schematic view of the connection of the sensing platform to the vehicle.
FIG. 4 is a schematic view of the underside of the sensing platform.
FIG. 5 is a schematic view of the geometric relationship of the sensing platform to the road surface.
FIG. 6 is a schematic view of bridge displacement measurement during vehicle travel.
In the figure: 1, a force balance type vibration sensor; 2, a bidirectional tilt angle sensor; 3, connecting a sensor with the shell; 4-long 2D laser profilometer; 5, a circular level; 6 short 2D laser profilometer; 7, a sensing platform; 8 connecting columns; 9 vehicle; 10 bridge deck.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings.
The utility model provides a vehicle-mounted sensing device for measuring bridge vibration displacement, mainly by force balance formula vibration sensor 1, two-way tilt sensor 2, sensor connecting shell 3, long 2D laser profile appearance 4, circular level 5, short 2D laser profile appearance 6, sensing platform 7 and spliced pole 8.
Before testing, connect force balance formula vibration sensor 1, two-way tilt sensor 2, sensor connecting shell 3 as an organic whole to embedded installation is on sensing platform 7, adjusts circular level 5, makes the bubble placed in the middle, guarantees that the horizontal direction of sensor installation is unanimous with sensing platform 7, through spliced pole 8 with sensing platform 7 and vehicle 9 fixed connection.
Long 2D laser profile appearance 4 is along vertical fixed connection in sensing platform 7 lower surface, and short 2D laser profile appearance 6 is along horizontal fixed connection in sensing platform 7 lower surface, and perpendicular with long 2D laser profile appearance 4, and the front end of sensing platform 7 is placed and is no less than 2, and the rear end is placed and is no less than 1, and the centre can be considered to increase short 2D laser profile appearance 6 of a plurality of.
A measuring method of a vehicle-mounted movable measuring point scanning sensing device for bridge vibration displacement measurement comprises the following steps: when the vehicle runs to a certain area on the bridge, the bridge deck 10 and the vehicles 9 vibrate, and the vehicles 9 follow the bridge deck 10 The line forms an inclination, as shown in FIG. 5, the long 2D laser profiler 4 tests a certain measuring point to obtain a distance DiWherein i represents the ith measuring point, and the motion displacement of the force balance type vibration sensor 1 is DiThe two-way tilt angle sensor 2 has two directional measurement angles alphaiAnd betaiThe movement displacement of the deck 10 isiThe displacement is an unknown quantity and is obtained by the following formula:
i＝(Di-di)cosαicosβi
for the positions without the force balance type vibration sensor 1 and the bidirectional inclination angle sensor 2, because the sensing platform 7 is a rigid platform, D is obtained by converting attitude data obtained by a plurality of scattered force balance type vibration sensors 1 and bidirectional inclination angle sensors 2i、αi、βiBased on measured diSolving for motion displacementi。
The laser at a certain position of the long 2D laser profiler 4 measures the distance of the bridge deck point a, as shown by the solid line arrow in the upper diagram in fig. 6, along with the traveling of the vehicle, the laser at another certain position of the long 2D laser profiler 4 at the next moment also measures the distance of the bridge deck point a, as shown by the dotted line arrow in the lower diagram in fig. 6, so that the long 2D laser profiler 4 measures the movable scanning of the bridge deck point a, and along with the traveling of the vehicle, the movable scanning of each point of the bridge deck is realized.
During the travel of the vehicle, there will be directional deviation. The displacement measurement is carried out on the transverse direction of a certain point of the bridge deck through the short 2D laser contourgraph 6, the pavement texture is scanned according to the advancing of a train, the pavement texture is also obtained according to the transverse direction displacement measurement of the short 2D laser contourgraph 6 at different positions on the sensing platform 7, the texture difference is compared, the deviation in the vehicle direction is obtained, the specific position of a bridge deck measuring point is further determined, and accurate bridge deck vibration information is obtained.

Claims (2)

1. A vehicle-mounted movable measuring point scanning sensing device for bridge vibration displacement measurement is characterized by comprising a force balance type vibration sensor (1), a bidirectional tilt sensor (2), a sensor connecting shell (3), a long 2D laser profiler (4), a circular level (5), a short 2D laser profiler (6), a sensing platform (7) and a connecting column (8);
the force balance type vibration sensor (1) is used for measuring displacement, speed and acceleration; the long 2D laser profiler (4) is used for measuring the distance from the sensor to the road surface, the force balance type vibration sensor (1) can emit a long line laser, and the long 2D laser profiler (4) can measure the displacement within the range of the long line laser; the short 2D laser profiler (6) and the long 2D laser profiler (4) have the same function, and only the line laser lengths are different;
the sensor connecting shell (3) is a shell with a hard surface and a hollow interior, is connected to the sensing platform (7) in an embedded manner, and the sensing platform (7) is provided with a plurality of sensor connecting shells (3);
the upper surface of the sensing platform (7) is fixedly connected to a vehicle (9) through a connecting column (8);
the force balance type vibration sensor (1) is fixedly connected to the upper surface of the sensor connecting shell (3), the bidirectional tilt angle sensor (2) is arranged in and fixed in the sensor connecting shell (3), and the circular level (5) is fixed on the sensor connecting shell (3);
Long 2D laser profile appearance (4) are along vertical fixed connection in sensing platform (7) lower surface, and horizontal fixed connection in sensing platform (7) lower surface is followed in short 2D laser profile appearance (6), and perpendicular with long 2D laser profile appearance (4), and the front end of sensing platform (7) is placed and is no less than 2, and the rear end is placed and is no less than 1, and the centre is addd short 2D laser profile appearance (6) according to the demand.
2. A measuring method of a vehicle-mounted movable measuring point scanning sensing device for bridge vibration displacement measurement is characterized by comprising the following steps: when a vehicle runs to a certain area on a bridge, the bridge deck (10) and the vehicle (9) vibrate, the vehicle (9) tilts along with the linear shape of the bridge deck (10), and the long 2D laser profilometer (4) tests a certain measuring point to obtain a distance DiWherein i represents the ith measuring point, and the motion displacement of the force balance type vibration sensor (1) is DiThe two-way tilt angle sensor (2) has two direction measurement angles respectivelyαiAnd betaiThe movement displacement of the deck (10) isiThe displacement is an unknown quantity and is obtained by the following formula:
i＝(Di-di)cosαicosβi
for the position without the force balance type vibration sensor (1) and the bidirectional inclination angle sensor (2), because the sensing platform (7) is a rigid platform, D is obtained by converting attitude data obtained by a plurality of scattered force balance type vibration sensors (1) and bidirectional inclination angle sensors (2) i、αi、βiBased on measured diSolving for motion displacementi；
The laser at a certain position of the long 2D laser profiler (4) measures the distance of the bridge deck A point, and along with the traveling of the vehicle, the laser at other certain positions of the long 2D laser profiler (4) at the next moment also measures the distance of the bridge deck A point, so that the long 2D laser profiler (4) can perform movable scanning measurement on the bridge deck A point, and along with the traveling of the vehicle, the movable scanning on each point of the bridge deck is realized;
during the running process of the vehicle, direction deviation exists; the displacement measurement is carried out on the transverse direction of a certain point of the bridge deck through the short 2D laser contourgraph (6), the pavement texture is scanned according to the advancing of a train, the pavement texture is obtained in the same way according to the transverse direction displacement measurement of the short 2D laser contourgraph (6) at different positions on the sensing platform (7), the texture difference is compared, the deviation in the vehicle direction is obtained, the specific position of a bridge deck measuring point is further determined, and accurate bridge deck vibration information is obtained.
CN202010639569.8A 2020-07-06 2020-07-06 Vehicle-mounted movable type measuring point scanning sensing device for bridge vibration displacement measurement and measuring method Active CN111855245B (en)

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Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009020045A (en) * 2007-07-13 2009-01-29 Railway Technical Res Inst Paint bullet to form object plane for noncontact measurement
CN104132792A (en) * 2014-07-22 2014-11-05 湖南大学 Device and method for using laser displacement signals for testing bridge floor flexibility
CN105067206A (en) * 2015-07-16 2015-11-18 长安大学 Measuring apparatus and method for flexibility line shape of bridge structure
CN106092056A (en) * 2016-06-28 2016-11-09 中国人民解放军国防科学技术大学 A kind of vehicle-mounted dynamic monitoring method of high-speed railway bridge foundation settlement deformation
CN106225684A (en) * 2016-08-26 2016-12-14 绍兴文理学院 Noncontact mobile tunnel lining cutting frequent microtremor measuring method based on vibration measurement with laser and device
KR102002014B1 (en) * 2019-02-18 2019-10-01 주식회사 삼성씨앤엠 Removal of coating layer for bridge supporting gait using laser system
CN111366317A (en) * 2020-03-13 2020-07-03 大连理工大学 Method for detecting damage of beam type bridge deck by using actively-excited vehicle

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009020045A (en) * 2007-07-13 2009-01-29 Railway Technical Res Inst Paint bullet to form object plane for noncontact measurement
CN104132792A (en) * 2014-07-22 2014-11-05 湖南大学 Device and method for using laser displacement signals for testing bridge floor flexibility
CN105067206A (en) * 2015-07-16 2015-11-18 长安大学 Measuring apparatus and method for flexibility line shape of bridge structure
CN106092056A (en) * 2016-06-28 2016-11-09 中国人民解放军国防科学技术大学 A kind of vehicle-mounted dynamic monitoring method of high-speed railway bridge foundation settlement deformation
CN106225684A (en) * 2016-08-26 2016-12-14 绍兴文理学院 Noncontact mobile tunnel lining cutting frequent microtremor measuring method based on vibration measurement with laser and device
KR102002014B1 (en) * 2019-02-18 2019-10-01 주식회사 삼성씨앤엠 Removal of coating layer for bridge supporting gait using laser system
CN111366317A (en) * 2020-03-13 2020-07-03 大连理工大学 Method for detecting damage of beam type bridge deck by using actively-excited vehicle

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
李宏男 等: "采用GPS与全站仪对大跨斜拉桥进行变形监测", 《防灾减灾工程学报》 *

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