CN107747935B - Gravity sedimentation inclination vibration monitor and use method thereof - Google Patents
Gravity sedimentation inclination vibration monitor and use method thereof Download PDFInfo
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- CN107747935B CN107747935B CN201711107583.8A CN201711107583A CN107747935B CN 107747935 B CN107747935 B CN 107747935B CN 201711107583 A CN201711107583 A CN 201711107583A CN 107747935 B CN107747935 B CN 107747935B
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- 238000004062 sedimentation Methods 0.000 title claims abstract description 21
- 230000005484 gravity Effects 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 10
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- 238000005192 partition Methods 0.000 claims abstract description 25
- 230000001133 acceleration Effects 0.000 claims description 6
- 239000004568 cement Substances 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 description 10
- 238000005259 measurement Methods 0.000 description 9
- 238000010276 construction Methods 0.000 description 8
- 239000007788 liquid Substances 0.000 description 8
- 239000013307 optical fiber Substances 0.000 description 8
- 238000012423 maintenance Methods 0.000 description 6
- 230000002706 hydrostatic effect Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
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- 238000004364 calculation method Methods 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
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- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000006399 behavior Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009530 blood pressure measurement Methods 0.000 description 1
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- 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
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- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
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- Remote Sensing (AREA)
- Geophysics And Detection Of Objects (AREA)
- Testing Or Calibration Of Command Recording Devices (AREA)
Abstract
The invention provides a gravity sedimentation inclination vibration monitor and a use method thereof, the gravity sedimentation inclination vibration monitor comprises a cross beam, the cross beam spans different partitions of a building member, one end of the cross beam positioned in one partition is hinged to the building member, a control box is fixedly connected below the cross beam, a two-axis inclination sensor and a pull rope displacement sensor are fixedly arranged in the control box, one end of the cross beam positioned in the other partition is hinged with a swing arm, the upper end of the swing arm is hinged to the building member in the other partition, the upper end of the swing arm is fixedly connected with a fixed pulley, and a pull rope of the pull rope displacement sensor passes through the upper end of the cross beam and is fixed on the other partition of the building member by bypassing the fixed pulley.
Description
Technical Field
The invention relates to a sustainable and quantifiable online measurement product for impact vibration amplitude, vertical settlement distance, horizontal inclination angle and horizontal relative displacement of a building body (such as a cable tunnel, a comprehensive pipe trench and a large bridge) for long-distance sectional construction, in particular to a gravity settlement inclination vibration monitor.
Background
The technical scheme of the existing long-distance sectional type construction building body for measuring vibration amplitude, vertical settlement distance, horizontal inclination angle and horizontal relative displacement mainly comprises the following steps:
1. tunnel/bridge hydrostatic level/level: the pressure measuring cavities of the plurality of static leveling instruments are connected in series to the liquid level container through the liquid through pipe, are measured by the sensor, are transmitted to the signal acquisition system through RS485 signals, are transmitted to the signal acquisition system through signal changes in the pressure monitoring process, are synchronously changed along with the pressure measurement changes through analysis and calculation, and therefore the pressure change quantity of each measuring point is measured to analyze the relative sedimentation height of the earth surface. The product utilizes the principle of communicating liquid, and the liquid level of the liquid storage tank that many general communicating pipes are connected together is always in same horizontal plane, compares through measuring the liquid level height of different liquid storage tanks and the basic point (the motionless point) of hydrostatic level, can obtain the relative difference settlement volume of each hydrostatic level through formula calculation. This approach has the following disadvantages:
1) The communicating pipe is difficult to construct, the construction cost is high, the later maintenance cost is high, the communicating pipe needs to adopt a whole-course sealing pipe, and the problems of supplementing, pollution, leakage and the like of communicating liquid are considered in maintenance. Meanwhile, certain potential safety hazards exist due to the adoption of oil treatment.
2) The measurement content cannot represent the global situation, and only sedimentation can be measured.
2. Tunnel/building layered settlement gauge: the method is mainly used for foundation pits, slopes and dam bodies, and the foundation adopts linear sensors to monitor settlement of different deep layers. The installation adopts a drilling pre-buried mode, namely, the drilling is buried in the foundation soil body at the part to be observed. The method is widely applied to compression sedimentation measurement and slope displacement deformation monitoring of various highways, railways and dykes. This approach has the following disadvantages:
1) The construction difficulty is big, and construction cost is high, and later maintenance cost is high, and the datum point needs to be bored on the foundation and deeply buried, and the maintenance is considered to conceal the corrosion of connecting rod, the problem such as jam, and the maintenance is very money can.
2) The measurement content cannot represent the global situation, and only sedimentation can be measured.
3) The tunnel optical fiber vibration monitoring system/tunnel optical fiber stress strain monitoring system is characterized in that the technology of laser, optical fiber sensing, optical communication and the like is utilized to collect external disturbance signals to influence the optical fiber, and the intensity of a vibration point is reflected by the fluctuation condition of the optical fiber through laser measurement. The method is widely used for safety monitoring of tunnels, bridges, perimeters and the like. The scheme has the defects that only qualitative judgment is carried out, only where large deformation occurs can be known through the change of stress or strain, and quantitative indexes cannot be formed aiming at specific deformation amplitude and scale. And the false alarm rate is high, and the small animal touch can also cause irreversible strain alarm.
Disclosure of Invention
The invention improves the problems, namely the technical problem to be solved by the invention is that the existing long-distance structural environment monitoring equipment cannot monitor the measurement in real time, and the measurement of the vertical sedimentation distance, the inclination angle, the vibration impact and the horizontal displacement distance of each monitoring zone is not comprehensive enough, and the precision of each measured value is low.
The specific embodiments of the invention are: the utility model provides a gravity subsides slope vibration monitor, includes a crossbeam, the crossbeam spanes the different subregions of building element looks, the one end that the crossbeam is located one of them subregion articulates in building element and crossbeam below fixedly connected with control box, control box internal fixation has diaxon inclination sensor and stay cord displacement sensor, the one end that the crossbeam is located another subregion articulates there is the swing arm, and the swing arm upper end articulates on building element of another subregion, the upper end fixedly connected with fixed pulley of swing arm, the stay cord of stay cord displacement sensor passes the crossbeam upper end and bypasses the fixed pulley and be fixed in on the another subregion of building element.
Further, a guide rail pulley fixed on the cross beam is arranged above the control box, the guide rail pulley comprises a pair of rollers, and the pull rope passes through the middle parts of the pair of rollers.
Further, one end of the pull rope, which is positioned in the control box, is also fixed with a counterweight.
Further, a collector connected with the stay rope displacement sensor and the biaxial inclination sensor is fixed in the control box, and the collector is connected with the workstation through a network line.
The whole device can be continuously installed in a segmented mode, each left fixed point is used as the fixed end of the right displacement line of the next device, and settlement, displacement and impact monitoring of monitored facilities in a large range can be achieved.
Compared with the prior art, the invention has the following beneficial effects:
1. simple structure, simple installation, foldable whole equipment, compact structure and simple installation.
2. And compared with the existing level gauge or optical fiber level subsider, the optical fiber level subsider is easy to install, has low construction requirement, and can be installed at the tapping position of the cable tunnel body according to the characteristics of the cable tunnel.
3. The reliability is high, the material is made of stainless steel, the protection grade is IP66, and the corrosion resistance is strong.
4. The application range is wide, and the requirements for construction and management of underground pipe networks are higher and higher along with the national requirements. The optical fiber type strain sedimentation is adopted, the cost is high, only the strain generation can be known, and no specific quantized index value exists. Through the level gauge, the post maintenance is required frequently. The product overcomes the problems. For large bridges, culverts, cable tunnels, utility tunnel, and important large-scale equipment for construction.
Drawings
FIG. 1 is a schematic diagram of the overall structure of the present invention.
Fig. 2 is a schematic view of the structure of the track pulley of the present invention.
FIG. 3 is a schematic layout of the present invention.
Detailed Description
The invention will be described in further detail with reference to the drawings and the detailed description.
As shown in fig. 1 to 3, a gravity settlement inclination vibration monitor includes a beam 10, the beam 10 spans across different partitions of a building member, in this embodiment, a cable tunnel is constructed in different partitions, because one end of the beam in a first partition 101 is hinged to the building member and a control box 20 is fixedly connected below the beam, a two-axis inclination sensor 210 and a pull rope displacement sensor 220 are fixed in the control box 20, one end of the beam in an adjacent second partition 102 is hinged to a swing arm 30, the upper end of the swing arm 30 is fixed on the building member of the second partition 102, the upper end of the swing arm 30 is fixedly connected with a fixed pulley 310, and a pull rope 221 of the pull rope displacement sensor 220 passes through the upper end of the beam and bypasses the fixed pulley to be fixed on the second partition 102.
In this embodiment, the beam 10 is hinged to the building element in the first partition 101 to enable the beam to swing when relatively displaced from the first partition 101 and the second partition 102, and the hinge of the upper end of the swing arm 30 to the building element in the second partition 102 may be inclined in the first partition 101 and the second partition 102.
In this embodiment, a guide pulley 40 fixed on the beam is disposed above the control box, the guide pulley 40 includes a pair of rollers 410, and the pull rope passes through the middle of the pair of rollers.
A plurality of pulleys may be provided on the building elements of the first and second sections 101, 102 as required to facilitate the location of the drawstring. The stay cord is through gravity transmission 51, and one end still is fixed with the counter weight 50, and general counter weight is the plumbum piece, be fixed with the collector of being connected with stay cord displacement sensor and diaxon inclination sensor in the control box, the collector is connected with the workstation through the network circuit.
The control box shell is made of stainless steel, so that the protection level of the IP68 can be achieved. Even under water can be kept undamaged.
In this embodiment, the two-axis inclination sensor 210 can measure the inclination angle of the lower beam of the gravity reference system, and by on-line monitoring of the data such as the transverse inclination and the line inclination of the beam, the early warning information of the inclination of the tower is given in combination with the line design parameters, and the measurement precision is high: angle measurement accuracy: 0.2 °;
the pull-cord displacement sensor 30 cooperates with a gravity counterweight to convert the vertical settlement displacement into a quantifiable, linearly proportional electrical signal. When the two detected subareas generate relative displacement, the balance weight is pulled by the stay rope connected with the other subarea, and the stay rope 221 drives the transmission mechanism and the sensing element in the stay rope sensor 220 to synchronously rotate; when the displacement moves reversely, the rotating device inside the sensor automatically withdraws the rope and keeps the tension of the rope unchanged during the stretching and withdrawing process of the rope, so that an electric signal which is proportional to the movement amount of the rope is output.
The stay rope sensor is provided with an independent automatic wire arrangement mechanism, so that automatic and uniform wire arrangement of a tensile rope is ensured, and the sensor is ensured to have high independent linear precision and longer service life.
The specific working steps and the principle are as follows:
(1) The reference point is selected to be near the joint according to the characteristics of the tunnel/pipe ditch.
(2) The beam 10 is fixed, a left end hinge head is fixed by adopting cement expansion screws, and a swing arm is fixed at the right end.
(3) And a datum moving point is selected, each pulley is fixed by adopting a cement expansion screw, 2-4 pulleys can be installed on each detector, and the distance between each pulley is about 3-5 meters, so that the obstruction of a pull rope is avoided.
(4) And (3) calibrating the horizontal position, adjusting the horizontal position to 180 degrees through a debugger, calibrating vertical sedimentation, and adjusting the sedimentation position to 0.
In the initial state, the horizontal displacement distance is calibrated to be 0, and the sedimentation distance is calibrated to be 0;
when the second partition 102 is misaligned (when settled) with respect to the first partition 101: an angle difference angle change is generated on the two-axis inclination sensor 210, where Xo and L are beam lengths, and where the horizontal displacement distance is Y and the vertical distance is V, and a triangle conversion formula exists between the two angles as follows:
the distance of Y=L-L×cos (Xo) is the horizontal displacement.
V=l×sin (Xo) is the sedimentation displacement.
The whole device can be continuously installed in a segmented mode, each left fixed point is used as the fixed end of the right displacement line of the next device, and settlement, displacement and impact monitoring of monitored facilities in a large range can be achieved.
Various accelerations of the cutting shaft can be timely acquired through the inclination angle sensor. Obtaining the weight of the device combined with the condition of the on-site device by adopting Newton's second law
F=m×a; wherein F is the magnitude of the external impact force, the unit is newton, a is the acceleration of the device collected, and m is = the mass of the device. If the device is integrally fixed with the measured object, the mass of the device plus the mass of the measured object is m, and the magnitude of external impact force can be calculated by using F=m×a by combining the measured acceleration a. Therefore, the faults caused by displacement and settlement can be judged to be caused by behaviors such as geological vibration, vehicle passing, artificial knocking and the like.
Any of the above-described embodiments of the present invention disclosed herein, unless otherwise stated, if they disclose a numerical range, then the disclosed numerical range is the preferred numerical range, as will be appreciated by those of skill in the art: the preferred numerical ranges are merely those of the many possible numerical values where technical effects are more pronounced or representative. Since the numerical values are more and cannot be exhausted, only a part of the numerical values are disclosed to illustrate the technical scheme of the invention, and the numerical values listed above should not limit the protection scope of the invention.
If the terms "first," "second," etc. are used herein to define a part, those skilled in the art will recognize that: the use of "first" and "second" is used merely to facilitate distinguishing between components and not otherwise stated, and does not have a special meaning.
Meanwhile, if the above invention discloses or relates to parts or structural members fixedly connected with each other, the fixed connection may be understood as follows unless otherwise stated: detachably fixed connection (e.g. using bolts or screws) can also be understood as: the non-detachable fixed connection (e.g. riveting, welding), of course, the mutual fixed connection may also be replaced by an integral structure (e.g. integrally formed using a casting process) (except for obviously being unable to use an integral forming process).
In addition, terms used in any of the above-described aspects of the present disclosure to express positional relationship or shape have meanings including a state or shape similar to, similar to or approaching thereto unless otherwise stated.
Any part provided by the invention can be assembled by a plurality of independent components, or can be manufactured by an integral forming process.
Finally, it should be noted that the above-mentioned embodiments are only for illustrating the technical scheme of the present invention and are not limiting; while the invention has been described in detail with reference to the preferred embodiments, those skilled in the art will appreciate that: modifications may be made to the specific embodiments of the present invention or equivalents may be substituted for part of the technical features thereof; without departing from the spirit of the invention, it is intended to cover the scope of the invention as claimed.
Claims (3)
1. The gravity sedimentation inclination vibration monitor is characterized by comprising a cross beam, wherein the cross beam spans different partitions of a building member, one end of the cross beam, which is positioned in one partition, is hinged to the building member, a control box is fixedly connected below the cross beam, a two-axis inclination sensor and a pull rope displacement sensor are fixed in the control box, one end of the cross beam, which is positioned in the other partition, is hinged to a swing arm, the upper end of the swing arm is hinged to the building member in the other partition, the upper end of the swing arm is fixedly connected with a fixed pulley, and a pull rope of the pull rope displacement sensor penetrates through the upper end of the cross beam and bypasses the fixed pulley to be fixed on the other partition of the building member;
a guide rail pulley fixed on the cross beam is arranged above the control box and comprises a pair of rollers, and the pull rope passes through the middle parts of the pair of rollers; a counterweight is also fixed at one end of the pull rope positioned in the control box;
the acceleration can be timely acquired through the biaxial inclination sensor, and the magnitude of external impact force can be calculated by adopting Newton's second law so as to judge the vibration reason.
2. The gravity sedimentation inclination vibration monitor according to claim 1, wherein a collector connected with the stay cord displacement sensor and the biaxial inclination sensor is fixed in the control box, and the collector is connected with the workstation through a network line.
3. A method for using the gravity sedimentation inclination vibration monitor, which is characterized by comprising the following specific working steps:
(1) Selecting a datum point, namely selecting the vicinity of the joint according to the characteristics of the tunnel/pipe ditch;
(2) The left end hinge head is fixed on the fixed cross beam by adopting cement expansion screws, and the swing arm is fixed on the right end of the fixed cross beam, so that the cross beam can rotate freely;
(3) A datum moving point is selected, each pulley is fixed by adopting a cement expansion screw, 2-4 pulleys can be installed on each detector, and the distance between each pulley is 3-5 meters, so that the obstruction of a pull rope is avoided;
(4) Calibrating the horizontal position, adjusting the horizontal position to 180 degrees through a debugger, calibrating vertical sedimentation, and adjusting the sedimentation position to 0;
in the initial state, the horizontal displacement distance is calibrated to be 0, and the sedimentation distance is calibrated to be 0;
when adjacent partitions are dislocated: an angle difference angle change is generated on the two-axis inclination angle sensor and is Xo, L is the length of the beam, at the moment, the horizontal displacement distance is Y, the vertical distance is V, and a triangle conversion formula exists between the two angles as follows:
the distance of Y=L-L×cos (Xo) is the horizontal displacement;
v=l×sin (Xo) is the sedimentation displacement;
f=m×a; wherein F is the magnitude of external impact force, the unit is Newton, a is the collected acceleration of the device, m is the mass of the device, and if the device is integrally fixed with the measured object, the mass of the device plus the mass of the measured object is m 2 Combining the measured acceleration a, f=m can be used 2 * a, calculating the magnitude of the external impact force.
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| CN201711107583.8A CN107747935B (en) | 2017-11-10 | 2017-11-10 | Gravity sedimentation inclination vibration monitor and use method thereof |
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| CN111693132B (en) * | 2020-06-23 | 2021-11-30 | 交通运输部公路科学研究所 | Bridge health monitoring system based on vibration sensor |
| CN112344909B (en) * | 2020-11-06 | 2022-04-26 | 国核信息科技有限公司 | Method and device for monitoring inclination of fan tower |
| CN114803190B (en) * | 2021-01-21 | 2024-06-25 | 中国石油天然气集团有限公司 | Included angle monitoring device, system and method |
| CN113008352B (en) * | 2021-03-05 | 2022-10-14 | 商丘工学院 | Building structure vibration monitoring devices |
| CN114485557A (en) * | 2021-12-08 | 2022-05-13 | 中铁二十局集团第六工程有限公司 | Method for detecting structural deformation of super high-rise building |
| CN114459430B (en) * | 2022-04-14 | 2022-07-12 | 厚普清洁能源股份有限公司 | Storage tank settlement and inclination monitoring method and system |
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