CN111487002A - Force measuring method for bridge spherical support - Google Patents
Force measuring method for bridge spherical support Download PDFInfo
- Publication number
- CN111487002A CN111487002A CN202010316154.7A CN202010316154A CN111487002A CN 111487002 A CN111487002 A CN 111487002A CN 202010316154 A CN202010316154 A CN 202010316154A CN 111487002 A CN111487002 A CN 111487002A
- Authority
- CN
- China
- Prior art keywords
- support plate
- strain
- lower support
- ring groove
- upper support
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000006073 displacement reaction Methods 0.000 claims abstract description 19
- 238000005259 measurement Methods 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 3
- 230000007704 transition Effects 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000000835 fiber Substances 0.000 description 4
- 230000002411 adverse Effects 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 238000009826 distribution Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 201000010099 disease Diseases 0.000 description 2
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000001465 metallisation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000012858 packaging process Methods 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
Images
Classifications
-
- 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
- G01L5/0028—Force sensors associated with force applying means
-
- 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
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
- G01B11/165—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge by means of a grating deformed by the object
-
- 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
- G01B21/32—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 the deformation in a solid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre
- G01L1/246—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being an optical fibre using integrated gratings, e.g. Bragg gratings
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention provides a force measuring method of a spherical bridge support, which is used for measuring the vertical load and the vertical displacement of the spherical bridge support and comprises the following steps: installing a first strain sensor on the upper support plate or the lower support plate, and acquiring the circumferential strain of the upper support plate or the lower support plate measured by the first strain sensor; calculating the vertical load of the upper support plate or the lower support plate according to the measured annular strain; and calculating the vertical displacement of the upper support plate or the lower support plate according to the calculated vertical load. According to the force measuring method for the spherical bridge support, the first strain sensor is arranged on the upper support plate or the lower support plate, the circumferential strain measured by the first strain sensor is utilized to calculate the vertical load and the vertical displacement of the upper support plate or the lower support plate, so that the problem of the spherical bridge support can be found at any time, the information of a bridge can be obtained in time, and a data base is provided for the replacement and maintenance of the spherical bridge support.
Description
Technical Field
The invention belongs to the technical field of bridge structures or buildings, and particularly relates to a force measuring method for a spherical bridge support.
Background
Bridge bearings are important components for connecting the upper structure (beam) and the lower structure (abutment) of a bridge. It not only transmits the stress and deformation of the upper structure to the lower structure faithfully, but also adapts to the corner and displacement of the upper structure under the action of load, temperature, concrete shrinkage and creep, so that the upper structure can deform freely without generating additional internal force. Therefore, the performance of the support is good and bad, and the performance is directly related to whether the whole bridge can work normally or not and the service life of the whole bridge.
Along with the change of the passing load and the environmental condition of the bridge, the bearing stress has large fluctuation, and the bearing stress is insufficient, uneven and even void due to long-term bias. The main beam internal force, the cross beam internal force and the support counter force are changed along with the change, the stress mode of the bridge structure is changed, the main beam, the bridge deck and the abutment are damaged, and the service life of the support is shortened. Many diseases of the bridge support can cause the loss of some functions or all functions of the support, and if the detection is not timely, the work with diseases can bring serious harm to the bridge. Meanwhile, the support is a component which is easy to damage but not easy to repair in the bridge structure, and generally needs to be replaced again after being damaged, so that the replacement construction can influence or interrupt traffic, and economic loss and adverse social influence are easily caused.
At present, measurement parameters such as stress and displacement of a bridge support at home and abroad are mainly divided into three methods: the method has the advantages that firstly, the uniform distribution type integral force-measuring support obtains the integral stress of the bridge support through various principles, but the method can only effectively measure the integral bearing load of the support and cannot finely reflect the stress distribution in the support; secondly, the non-uniform integral force-measuring support obtains the integral stress of the support by setting up a discrete sensor, the support obtains the integral bearing of the support in the form of non-uniform stress of the support by respectively introducing sensitive elements such as a pressure sensor, a telescopic variable resistor, a fiber grating sensor, a strain gauge and the like into the traditional support, the internal stress distribution of the support cannot be finely and clearly reflected, and meanwhile, the introduction of the sensitive elements also has great influence on the support structure; thirdly, the bridge support is empty to test the method, but the existing method has the problems of single physical quantity, single measuring position, integral structure measurement, great influence on the mechanical property of the support due to the change of the support structure, and the like. Therefore, the existing support monitoring method cannot reflect the distribution stress of the support, and cannot realize the effective fusion of the sensitive element and the support.
Disclosure of Invention
The invention aims to provide a force measuring method for a bridge spherical support, and aims to solve the technical problems that the distributed stress of the support cannot be reflected and the effective fusion of a sensitive element and the support cannot be realized in the prior art.
In order to achieve the purpose, the invention adopts the technical scheme that: the method for measuring the force of the spherical bridge support is used for measuring the vertical load and the vertical displacement of the spherical bridge support and comprises the following steps:
installing a first strain sensor on the upper support plate or the lower support plate, and acquiring the circumferential strain of the upper support plate or the lower support plate measured by the first strain sensor;
calculating the vertical load of the upper support plate or the lower support plate according to the measured annular strain;
calculating a vertical displacement of the upper seat plate or the lower seat plate according to the calculated vertical load.
As another embodiment of the present invention, a first strain sensor is mounted on an outer circumferential wall of the upper bracket plate or an outer circumferential wall of the lower bracket plate, and includes: the circumferential wall of upper bracket board or set up along radial inside sunken annular on the circumferential wall of lower carriage board install first strain sensor in the annular, acquire first strain sensor measurement upper bracket board or lower carriage board in the hoop strain of annular department.
As another embodiment of the present invention, the vertical load of the upper seat plate or the lower seat plate is calculated from the measured hoop strain, including;
and calculating the vertical load of the upper support plate or the lower support plate according to the annular strain of the upper support plate or the lower support plate at the ring groove, which is measured by the first strain sensor.
As another embodiment of the present invention, the circumferential strain of the upper support plate or the lower support plate at the ring groove is changedxWherein:
in the formula (I), the compound is shown in the specification,xthe vertical stress of the upper support plate or the lower support plate at the annular groove is defined, F is the vertical load of the upper support plate or the lower support plate, upsilon is Poisson's ratio, E is the elastic modulus of the upper support plate or the lower support plate, and A is the cross-sectional area of the upper support plate or the lower support plate at the annular groove;
calculating the vertical load F of the upper support plate or the lower support plate according to the measured circumferential strain of the upper support plate or the lower support plate at the ring groove,
as another embodiment of the present invention, the vertical displacement of the upper seat plate or the lower seat plate is Δ L, wherein:
wherein L is an axial height of the upper or lower seat plate.
As another embodiment of the present invention, the mounting of the first strain sensor on the outer circumferential wall of the upper support plate or the outer circumferential wall of the lower support plate further includes: and a second strain sensor is arranged in the ring groove, and the annular strain of the upper support plate or the lower support plate at the ring groove, which is measured by the second strain sensor, is obtained.
As another embodiment of the present invention, a plurality of the first strain sensors and a plurality of the second strain sensors are installed in the ring groove at equal intervals in the circumferential direction; the first strain sensors correspond to the second strain sensors one to one.
As another embodiment of the present invention, a bottom wall of the ring groove is disposed parallel to the outer circumferential wall of the upper support plate or the outer circumferential wall of the lower support plate, and a side wall of the ring groove is disposed perpendicular to the bottom wall of the ring groove.
As another embodiment of the invention, a fillet transition is adopted between the bottom wall of the ring groove and the side wall of the ring groove.
The force measuring method of the bridge spherical support provided by the invention has the beneficial effects that: compared with the prior art, the force measuring method of the bridge spherical support is characterized in that a first strain sensor is arranged on the upper support plate or the lower support plate on the premise of not changing the structure of the bridge spherical support, and the circumferential strain measured by the first strain sensor is utilized to calculate the vertical load and the vertical displacement of the upper support plate or the lower support plate so as to find the problem of the bridge spherical support at any time and acquire the information of a bridge in time; the construction safety can be evaluated, and the safety of bridge use can be predicted; meanwhile, a data base is provided for the replacement and maintenance of the spherical bridge support, and the economic loss and the adverse social influence are reduced.
Drawings
Fig. 1 is a first schematic structural diagram of a spherical bridge support according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a spherical bridge support according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a spherical bridge support at a ring groove according to an embodiment of the present invention.
In the figure: 1. an upper support plate; 2. a lower support plate; 3. a first strain sensor; 4. a spherical cap liner plate; 5. a ring groove; 6. a second strain sensor.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The method for measuring the force of the spherical bridge support provided by the invention is explained. The force measuring method of the bridge spherical support is used for measuring the vertical load and the vertical displacement of the bridge spherical support and comprises the following steps:
installing a first strain sensor 3 on the upper support plate 1 or the lower support plate 2, and acquiring the circumferential strain of the upper support plate 1 or the lower support plate 2 measured by the first strain sensor 3;
calculating the vertical load of the upper support plate 1 or the lower support plate 2 according to the measured annular strain;
and calculating the vertical displacement of the upper support plate 1 or the lower support plate 2 according to the calculated vertical load.
The spherical bridge support in the embodiment is a common spherical support structure in the prior art, and comprises an upper support plate 1, a lower support plate 2 and a spherical crown lining plate 4 positioned between the upper support plate 1 and the lower support plate 2. The upper end face of the spherical crown lining plate 4 and the lower end face of the upper support plate 1 are both planes, and the spherical crown lining plate 4 and the upper support plate 1 are in plane contact. The lower end face of the spherical crown lining plate 4 is a convex spherical surface, the upper end face of the lower support plate 2 is a concave spherical surface, and the spherical crown lining plate 4 is in spherical contact with the lower support plate 2, as shown in fig. 1 or fig. 2.
Compared with the prior art, the force measuring method of the bridge spherical support is characterized in that on the premise of not changing the structure of the bridge spherical support, the first strain sensor 3 is arranged on the upper support plate 1 or the lower support plate 2, and the circumferential strain measured by the first strain sensor 3 is utilized to calculate the vertical load and the vertical displacement of the upper support plate 1 or the lower support plate 2 so as to find the problem of the bridge spherical support at any time and acquire the information of a bridge in time; the construction safety can be evaluated, and the safety of bridge use can be predicted; meanwhile, a data base is provided for the replacement and maintenance of the spherical bridge support, and the economic loss and the adverse social influence are reduced.
It should be noted that, regardless of whether the first strain sensor 3 is mounted on the upper seat plate 1 or the lower seat plate 2, the vertical loads of the upper seat plate 1 and the lower seat plate 2 can be calculated. If the vertical load borne by the upper support plate 1 is FOn the upper partThe vertical bearing force transmitted to the lower bearing plate 2 through the transmission of force is FLower part＝αFOn the upper part。
In addition, the first strain sensor 3 in this embodiment may adopt a grating sensor, and the grating sensor is mounted on the upper support plate 1 or the lower support plate 2 by adopting a grating packaging process such as glue packaging or metallization packaging. First strain sensor 3 is connected with data acquisition equipment, and data acquisition equipment directly reads first strain sensor 3's measured data to but the vertical load and the vertical displacement of direct calculation demonstration upper bracket board 1 and bottom suspension board 2.
Referring to fig. 1 or fig. 2, as an embodiment of the method for measuring force of a bridge ball-type bearing provided by the present invention, a first strain sensor 3 is mounted on an outer circumferential wall of an upper bearing plate 1 or an outer circumferential wall of a lower bearing plate 2, and includes: set up along radial inside sunken annular 5 on the periphery wall of upper bracket board 1 or the periphery wall of lower support board 2, install first strain sensor 3 in annular 5, obtain the hoop strain of upper bracket board 1 or lower support board 2 in annular 5 department that first strain sensor 3 measured.
And according to the annular strain of the upper support plate 1 or the lower support plate 2 at the ring groove 5 measured by the first strain sensor 3, the vertical load of the upper support plate 1 or the lower support plate 2 is calculated.
Wherein, the annular strain of the upper support plate 1 or the lower support plate 2 at the ring groove 5 is changed intoxWherein:
in the formula (I), the compound is shown in the specification,xis the vertical stress of the upper support plate 1 or the lower support plate 2 at the ring groove 5, F is the vertical load of the upper support plate 1 or the lower support plate 2, upsilon is Poisson ratio, and E is the elasticity of the upper support plate 1 or the lower support plate 2And the modulus of elasticity, A, is the cross-sectional area of the upper support plate 1 or the lower support plate 2 at the annular groove 5.
The vertical load F of the upper support plate 1 or the lower support plate 2 is calculated according to the measured circumferential strain of the upper support plate 1 or the lower support plate 2 at the ring groove 5,
according to the calculated vertical load F of the upper support plate 1 or the lower support plate 2, the vertical displacement delta L of the upper support plate 1 or the lower support plate 2 is calculated,
wherein L is the axial height of the upper bearing plate 1 or the lower bearing plate 2.
In order to realize the purpose of not changing the structure of the bridge spherical bearing and measuring the circumferential strain of the first strain sensor 3, the first strain sensor 3 needs to be installed on the peripheral wall of the upper bearing plate 1 or the peripheral wall of the lower bearing plate 2. Because upper bracket board 1 and lower support plate 2 are along the body of revolution structure of axis symmetry, when receiving vertical load effect, the measured value data of hoop strain is very little, under the low condition of measurement accuracy of first strain sensor 3, will appear measured data inaccurate, if the measured data of hoop strain is inaccurate, that calculates the vertical load that reachs and vertical displacement's data also inaccurate.
In this embodiment, the annular groove 5 is disposed on the upper support plate 1 or the lower support plate 2, and the upper support plate 1 or the lower support plate 2 can generate stress concentration at the annular groove 5, so the hoop strain measured at the annular groove 5 is greater than the hoop strain measured at other positions of the upper support plate 1 or the lower support plate 2, that is, the hoop strain at the annular groove 5 is greater than the hoop strain at other positions of the upper support plate 1 or the lower support plate 2.
The measured circumferential strain at the ring groove 5 is amplified, so that the measurement precision is high, and the vertical load and the vertical displacement of the upper support plate 1 or the lower support plate 2 can be accurately calculated.
In this embodiment, the bottom wall of the ring groove 5 is arranged in parallel with the outer peripheral wall of the upper support plate 1 or the outer peripheral wall of the lower support plate 2. The side walls of the ring groove 5 are arranged perpendicular to the bottom wall of the ring groove 5, as shown in fig. 1.
Preferably, in order to avoid premature failure at the junction of the bottom wall of the ring groove 5 and the side wall of the ring groove 5, a rounded transition is used between the bottom wall of the ring groove 5 and the side wall of the ring groove 5, as shown in fig. 2.
The following explains a principle that the hoop strain at the ring groove 5 is amplified with respect to the hoop strain at other positions of the upper seat plate 1 or the lower seat plate 2.
First, in order to achieve the purpose of not changing the bridge ball type bearer structure and measuring the circumferential strain by the first strain sensor 3, the first strain sensor 3 is installed on the outer circumferential wall of the upper bearer plate 1 or the outer circumferential wall of the lower bearer plate 2.
FIG. 3 is a schematic structural diagram of a spherical bridge support at a ring groove 5 according to an embodiment of the present invention, in which the circumferential strain at the outer circumferential wall of the upper support plate 1 or the outer circumferential wall of the lower support plate 2 is changed to1Wherein:
wherein F is the vertical load of the upper support plate 1 or the lower support plate 2, upsilon is Poisson's ratio, E is the elastic modulus of the upper support plate 1 or the lower support plate 2, and d is1The diameter of the upper support plate 1 or the lower support plate 2.
The annular strain of the upper support plate 1 or the lower support plate 2 at the ring groove 5 is changed2Wherein:
in the formula (d)2Is the diameter of the upper bearing plate 1 or the lower bearing plate 2 at the ring groove 5.
From this, the signal amplification k can be obtained
The upper support plate 1, the spherical cap lining plate 4 and the lower support plate 2 can be made of materials such as Q345B, Q345C or ZG 270-500.
The effect that the amplified hoop strain can improve the measurement accuracy is explained by the following tests:
the first strain sensors 3 are respectively arranged on the peripheral wall of the lower support plate 2 and the ring groove 5, and the outer diameter d of the lower support plate 21480mm, the outer diameter d of the lower support plate 2 at the ring groove 52The checking can be 267mm according to the bending combined deformation and the compressive stress intensity, and a rated vertical load F is applied to the upper support plate 1Upper ratingBy transmission of force, FUpper ratingThe vertical bearing force transmitted to the lower bearing plate 2 is FLower rating＝αFUpper rating。
If vertical bearing force FUpper ratingThe poisson's ratio of the Q345B steel is 0.25 to 0.3, 0.3 is taken for calculation, E is 210GPa, and the circumferential strain of the outer circumferential wall of the lower seat plate 21Comprises the following steps:
the first strain sensor for measuring the hoop strain, such as the fiber grating sensor, can measure usually about 10 microstrains, and the hoop strain caused by the vertical bearing capacity when the ball-type support is fully loaded is only about 40 microstrains, so that the hoop strain caused by the vertical bearing capacity when the ball-type support is actually applied is difficult to detect by the fiber grating sensor.
Circumferential strain of lower support plate 2 at ring groove 52Comprises the following steps:
the obtained annular strain is far higher than the measurement precision of the fiber grating sensor, and the amplification factor of the measurement signal is
An improvement in measurement sensitivity is achieved.
Referring to fig. 1 or fig. 2, as an embodiment of the method for measuring force of a bridge ball-type bearing provided by the present invention, a first strain sensor 3 is mounted on an outer circumferential wall of an upper bearing plate 1 or an outer circumferential wall of a lower bearing plate 2, and the method further includes: and a second strain sensor 6 is arranged in the ring groove 5, and the circumferential strain of the upper support plate 1 or the lower support plate 2 at the ring groove 5, which is measured by the second strain sensor 6, is obtained.
Specifically, a plurality of first strain sensors 3 and a plurality of second strain sensors 6 are installed in the ring groove 5 at equal intervals in the circumferential direction; the first strain sensors 3 correspond one-to-one to the second strain sensors 6. The first strain sensor 3 is arranged horizontally, and the second strain sensor 6 is arranged vertically.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (9)
1. The force measuring method of the spherical bridge support is used for measuring the vertical load and the vertical displacement of the spherical bridge support, and is characterized by comprising the following steps of:
installing a first strain sensor on an upper support plate or a lower support plate, and acquiring the circumferential strain of the upper support plate or the lower support plate measured by the first strain sensor;
calculating the vertical load of the upper support plate or the lower support plate according to the measured annular strain;
calculating a vertical displacement of the upper seat plate or the lower seat plate according to the calculated vertical load.
2. The method of claim 1, wherein mounting a first strain sensor on the upper or lower support plate comprises: the circumferential wall of upper bracket board or set up along radial inside sunken annular on the circumferential wall of lower carriage board install first strain sensor in the annular, acquire first strain sensor measurement upper bracket board or lower carriage board in the hoop strain of annular department.
3. The method of claim 2, wherein calculating the vertical load of the upper or lower seat plate based on the measured hoop strain comprises:
and calculating the vertical load of the upper support plate or the lower support plate according to the annular strain of the upper support plate or the lower support plate at the ring groove, which is measured by the first strain sensor.
4. The method of claim 3, wherein the hoop strain of the upper support plate or the lower support plate at the ring groove is changed to a hoop strainxWherein:
in the formula (I), the compound is shown in the specification,xthe vertical stress of the upper support plate or the lower support plate at the annular groove is defined, F is the vertical load of the upper support plate or the lower support plate, upsilon is Poisson's ratio, E is the elastic modulus of the upper support plate or the lower support plate, and A is the cross-sectional area of the upper support plate or the lower support plate at the annular groove;
calculating the vertical load F of the upper support plate or the lower support plate according to the measured circumferential strain of the upper support plate or the lower support plate at the ring groove,
5. the method of claim 4, wherein the vertical displacement of the upper or lower seat plate is Δ L, wherein:
wherein L is an axial height of the upper or lower seat plate.
6. The method of claim 2, wherein the first strain sensor is mounted on the outer circumferential wall of the upper support plate or the outer circumferential wall of the lower support plate, and further comprising: and a second strain sensor is arranged in the ring groove, and the annular strain of the upper support plate or the lower support plate at the ring groove, which is measured by the second strain sensor, is obtained.
7. The method of claim 6, wherein a plurality of said first strain sensors and a plurality of said second strain sensors are mounted in said ring groove at circumferentially equal intervals; the first strain sensors correspond to the second strain sensors one to one.
8. The method for measuring the force of a bridge ball-type socket according to claim 2, wherein the bottom wall of the ring groove is disposed in parallel with the outer peripheral wall of the upper socket plate or the outer peripheral wall of the lower socket plate, and the side wall of the ring groove is disposed perpendicular to the bottom wall of the ring groove.
9. The method of claim 8, wherein a rounded transition is provided between the bottom wall of the ring groove and the sidewall of the ring groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316154.7A CN111487002A (en) | 2020-04-21 | 2020-04-21 | Force measuring method for bridge spherical support |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010316154.7A CN111487002A (en) | 2020-04-21 | 2020-04-21 | Force measuring method for bridge spherical support |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111487002A true CN111487002A (en) | 2020-08-04 |
Family
ID=71792853
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010316154.7A Pending CN111487002A (en) | 2020-04-21 | 2020-04-21 | Force measuring method for bridge spherical support |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111487002A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029312A (en) * | 2021-02-26 | 2021-06-25 | 上海兰德公路工程咨询设计有限公司 | Axle load detection method for passing vehicle of bridge based on spherical support |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2566122B1 (en) * | 1984-06-19 | 1987-07-31 | Exper Rech Etu Batimen Centre | METHOD AND DEVICE FOR THE IN SITU DETERMINATION OF BRIDGE SUPPORT REACTIONS AND THE LIKE |
| JPH11351995A (en) * | 1998-04-10 | 1999-12-24 | Moriya Corp | Load meter, pressure sensor, calibration device for pressure sensor |
| CN102032959A (en) * | 2010-11-23 | 2011-04-27 | 北京铁科首钢轨道技术有限公司 | Vertical intelligent force measurement support |
| CN103410088A (en) * | 2013-08-26 | 2013-11-27 | 柳州东方工程橡胶制品有限公司 | Intelligent basin-type support |
| CN104343083A (en) * | 2013-08-01 | 2015-02-11 | 深圳市市政设计研究院有限公司 | Support and pressure monitoring structure thereof |
| CN204359468U (en) * | 2014-10-28 | 2015-05-27 | 中铁二院工程集团有限责任公司 | For the proving ring of multidirectional dynamometry ball shaped steel bearing |
-
2020
- 2020-04-21 CN CN202010316154.7A patent/CN111487002A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2566122B1 (en) * | 1984-06-19 | 1987-07-31 | Exper Rech Etu Batimen Centre | METHOD AND DEVICE FOR THE IN SITU DETERMINATION OF BRIDGE SUPPORT REACTIONS AND THE LIKE |
| JPH11351995A (en) * | 1998-04-10 | 1999-12-24 | Moriya Corp | Load meter, pressure sensor, calibration device for pressure sensor |
| CN102032959A (en) * | 2010-11-23 | 2011-04-27 | 北京铁科首钢轨道技术有限公司 | Vertical intelligent force measurement support |
| CN104343083A (en) * | 2013-08-01 | 2015-02-11 | 深圳市市政设计研究院有限公司 | Support and pressure monitoring structure thereof |
| CN103410088A (en) * | 2013-08-26 | 2013-11-27 | 柳州东方工程橡胶制品有限公司 | Intelligent basin-type support |
| CN204359468U (en) * | 2014-10-28 | 2015-05-27 | 中铁二院工程集团有限责任公司 | For the proving ring of multidirectional dynamometry ball shaped steel bearing |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113029312A (en) * | 2021-02-26 | 2021-06-25 | 上海兰德公路工程咨询设计有限公司 | Axle load detection method for passing vehicle of bridge based on spherical support |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105588669B (en) | Axle pin type three-way force cell sensor | |
| CN104294756B (en) | A kind of multidirectional dynamometry ball shaped steel bearing | |
| CN102494839B (en) | Self-balancing large range torque calibrating device | |
| CN211121749U (en) | Force measuring spherical support with vertical force measuring element easy to replace | |
| WO2023040327A1 (en) | Intelligent sensing apparatus and method for bearing capacity of basin-type rubber support | |
| CN212103650U (en) | Spherical bridge support | |
| CN111487002A (en) | Force measuring method for bridge spherical support | |
| CN110174192B (en) | Vertical force measuring device and force measuring method | |
| CN108910674A (en) | A kind of nuclear power station CR10 and reinforcing bar composite module integral hoisting system | |
| CN216309290U (en) | Intelligent sensing device for bearing capacity of plate-type rubber support | |
| CN201738234U (en) | Basin rubber support provided with three-dimensional dynamometer | |
| CN204185764U (en) | A kind of multidirectional dynamometry ball shaped steel bearing | |
| CN219391196U (en) | Axial force measuring ring device based on optical fiber sensing technology | |
| CN112816115A (en) | Stress detection method and measuring tool for elastic vibration isolator in built-in floating slab track bed | |
| CN216309291U (en) | Intelligent sensing device for bearing capacity of basin-type rubber support | |
| CN204359468U (en) | For the proving ring of multidirectional dynamometry ball shaped steel bearing | |
| CN205175587U (en) | Load measuring device | |
| CN210735377U (en) | Belt deviation detection device | |
| CN204530446U (en) | Bridge dynamometry friction pendulum support | |
| CN204325905U (en) | For the dynamometry elastic body of multidirectional dynamometry ball shaped steel bearing | |
| CN201653606U (en) | Strain force-measuring steel plate | |
| CN2826383Y (en) | Flush type force cell | |
| CN203310500U (en) | Novel flexible cup support structure with large-displacement for weighing large-scale object | |
| CN113624385A (en) | Intelligent sensing device and method for bearing capacity of plate-type rubber support | |
| CN110296837B (en) | Sliding bearing load measuring method based on bearing bush deformation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200804 |
|
| RJ01 | Rejection of invention patent application after publication |