CN109898566A - Monitor the New Anchor Cable centering rack of prestress anchorage cable operating status - Google Patents
Monitor the New Anchor Cable centering rack of prestress anchorage cable operating status Download PDFInfo
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- CN109898566A CN109898566A CN201910072251.3A CN201910072251A CN109898566A CN 109898566 A CN109898566 A CN 109898566A CN 201910072251 A CN201910072251 A CN 201910072251A CN 109898566 A CN109898566 A CN 109898566A
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- sleeve
- deformation
- dynamometer
- prestress anchorage
- inertial navigation
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Abstract
The present invention provides a kind of New Anchor Cable centering rack for monitoring prestress anchorage cable operating status, it includes sleeve, drive end bearing bracket, rear end cap, inertial navigation equipment, metallic rod, spring and dynamometer.Sleeve and forward and backward end cap constitute an entirety；Inertial navigation equipment is arranged in sleeve, for measuring the bending deformation of prestress anchorage cable；Dynamometer passes through front end cap bore and protrudes into sleeve；Metallic rod protrudes into sleeve through rear end cap；In sleeve, a spring is cased between the end of dynamometer central axis and the end of metallic rod；After inertial navigation equipment spring, metallic rod are built in sleeve, by injected hole slip casting, fixed so that sleeve is outer by mortar, the component locations in sleeve are relatively fixed.The present invention utilizes inertial navigation equipment and dynamometer, real-time monitoring prestress anchorage cable leads to the stress and deformation of anchor cable in slope reinforcement During Process of Long-term Operation because of rock mass deformation, important references are provided for the stability of analysis anchored slope and safety and prestress anchoraging system reliability of operation and life prediction.
Description
Technical field
The present invention relates to the devices of stress and deformation in a kind of monitoring prestress anchorage cable During Process of Long-term Operation, specifically
It says, the present invention relates to a kind of New Anchor Cable centering rack, which can be in real-time monitoring prestress anchorage cable operational process
Bending deformation situation.
Background technique
Prestress anchorage cable is the most common technological means of slope retaining in geotechnical engineering.Prestress anchorage cable include Inner bolt head,
Anchor cable body, outer anchor head.Inner bolt head is anchored into rock mass by the hole of rock mass weak structural face, and outer anchor head is fixed on outside rock mass, interior anchor
Anchor cable body is connected between head and outer anchor head.Inner bolt head, which is anchored in rock mass, provides prestressed foundation, and outer anchor head is that anchor cable is borrowed
To provide the position of tension tonnage and locking, anchor cable body be connect the component and stretching force of inside and outside anchor head receiving this.Anchor cable
Body is made of high strength cast iron, steel strand wires or spiral.Prestress anchorage cable passes through anchor cable body for soft stratum and firm ground
It is linked togather, to change the stress state of slope rock mass, improves the globality and intensity of side slope unstable rock mass.
It after prestress anchorage cable is embedded in slope rock mass, needs to be monitored it in its During Process of Long-term Operation, guarantee
It runs health, and only prestress anchorage cable operation health just can guarantee the safety and stablization that side slope is run.Currently, in ground anchorage
In engineering, it is to the method that is monitored in long or short term of prestressd anchor cable variation: outside anchor cable at anchor head and prestressed anchor
Sensor is buried in periphery rock mass by rope, and anchor system longtime running state, operating condition are monitored.
Since the sensor currently used for monitoring and observing is all typically mounted at outer anchor head (i.e. outer anchor head backing plate and work
Between anchor slab)；However, the study found that prestressd anchor cable is evolution with distance, changing rule and specification are very different, while anchor
It cannot be guaranteed that anchor cable structure is straight line in rope work progress, so, at present for the monitoring of prestressd anchor cable or main
Stress the stress monitoring at anchor head position, it is difficult to obtain anchor cable deep deformation characteristic information.This is for the long-term of prestress anchorage cable
For running character, it is difficult to hold really, in time, the operating status of entire side slope is also difficult to pass through monitoring data
It is analyzed.
Summary of the invention
In view of the foregoing, effectively to grasp the stress deformation in prestress anchoraging During Process of Long-term Operation, especially understand
Its deep rock-mass deformation characteristic, the object of the present invention is to provide a kind of for monitoring the New Anchor Cable of prestress anchorage cable operating status
Centering rack.
To achieve the above object, the invention adopts the following technical scheme: a kind of monitor the new of prestress anchorage cable operating status
Type anchor cable centering rack, it includes sleeve, drive end bearing bracket, rear end cap, inertial navigation equipment, metallic rod, spring and dynamometer；
The sleeve and drive end bearing bracket, rear end cap constitute an entirety；Deformation dynamometry hole, threading are provided on the drive end bearing bracket
Hole, injected hole and inertial navigation hole；
The inertial navigation equipment is used to measure the bending deformation of prestress anchorage cable, which is put into institute through the inertial navigation hole
It states in sleeve, signal output line is pierced by through the threading hole；
The dynamometer is installed on the outside of the drive end bearing bracket, and the deformation dynamometry hole that central shaft passes through the drive end bearing bracket is protruded into
In the sleeve；The metallic rod protrudes into the sleeve through the rear end cap；In the sleeve, the center of the dynamometer
It is cased with the spring between shaft end portion and the end of the metallic rod, a flexible protective casing is cased with outside the spring；
After the inertial navigation equipment, spring, metallic rod are built in the sleeve, by the injected hole slip casting, guarantee
Component locations in the sleeve are relatively fixed.
In a preferred embodiment of the present invention, the inertial navigation equipment includes gyroscope and gravitational accelerometer；
The gyroscope and gravitational accelerometer are used to measure the spatial attitude of prestress anchorage cable, monitor prestress anchorage cable
Bending deformation.
In a preferred embodiment of the present invention, which includes four dynamometers, four springs and four gold
Belong to bar；
Dynamometry hole is deformed there are four symmetrically opening on the drive end bearing bracket；
Each dynamometer is inserted into the sleeve from the deformation dynamometry hole of a drive end bearing bracket；Each metallic rod point
It Chuan Guo not the rear end cap；In the sleeve, set between the end of the dynamometer central axis and the end of the metallic rod
There is the spring；
When prestress anchorage cable bending deformation, deformation and axle power caused by four deformation dynameters are different
, by the numerical value of dynamometer described in four dynamometry holes of analysis, it can be derived that the size and Orientation of anchor cable bending deformation.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is side view of the present invention；
Fig. 3 is present invention deformation dynamometry part partial enlarged view.
Specific embodiment
Structure and feature of the invention are described in detail with reference to the accompanying drawings and examples.It should be noted that can
To make various modifications to disclosed embodiments, therefore, embodiment disclosed in specification be should not be considered as to the present invention
Limitation, and only as the example of embodiment, the purpose is to keep feature of the invention apparent.
As shown in Figure 1 and Figure 2, New Anchor Cable centering rack disclosed by the invention includes sleeve 1, drive end bearing bracket 2, rear end cap 3, is used to
Lead equipment 4, metallic rod 5, spring 6 and dynamometer 7.
Sleeve 1 can be metal sleeve, be also possible to non-metallic plastic sleeve.Sleeve 1 and drive end bearing bracket 2, rear end cap 3 are constituted
One entirety, inertial navigation equipment 4, metallic rod 5 and spring 6 are arranged in sleeve 1；Dynamometer 7 is fixed on 2 outside of drive end bearing bracket.
As shown, being provided with deformation dynamometry hole 8, threading hole 9, injected hole 10 and inertial navigation hole 11 on drive end bearing bracket.The inertial navigation
Equipment 4 is used to measure the bending deformation of prestress anchorage cable, is put into sleeve 1 through inertial navigation hole 11, signal output line is through threading
Hole 9 exports.
In the specific embodiment of the invention, the inertial navigation equipment 4 includes gyroscope and gravitational accelerometer.Gyroscope and again
Power accelerometer is used to measure the spatial attitude of prestress anchorage cable, such as measures prestressed anchor by gyroscope and gravitational accelerometer
Change of pitch angle of the rope on X, Y, Z axis direction, so as to the space displacement of a certain measuring point of calculated prestressing force anchor cable.Gyroscope and
The signal output line of gravitational accelerometer is exported through threading hole 9.
As depicted in figs. 1 and 2, dynamometer 7 is installed in 2 outside of drive end bearing bracket, and central shaft passes through the deformation dynamometry of drive end bearing bracket 2
Hole 8 is protruded into sleeve 1, and metallic rod 5 protrudes into sleeve 1 through rear end cap 3.In sleeve, the end of 7 central axis of dynamometer and metal
It is cased with a spring 6 between the end of bar 5, is cased with a flexible protective casing 12 in the outside of spring 6.
After inertial navigation equipment, spring, metallic rod are built in sleeve, by 10 slip casting of injected hole, so that sleeve is outer by sand
Slurry is fixed, and the component locations in sleeve are relatively fixed.It is further to fix dynamometer 7 and metallic rod 5, fixed fill can be passed through
It sets such as nut 13 dynamometer 7 and metallic rod 5 are fixed together with drive end bearing bracket 2 and rear end cap 3 respectively.
The anchor cable body being made of in prestress anchorage cable steel strand wires is fixed on outside the sleeve of New Anchor Cable centering rack of the present invention,
It is embedded in rock mass.The present invention is using the gyroscope and gravitational accelerometer for constituting inertial navigation equipment, the operation to prestress anchorage cable
State, especially in prestress anchorage cable operational process, because of the bending deformation situation of prestress anchorage cable caused by rock mass deformation
Real-time monitoring is carried out, in conjunction with operation carrier initial inertia information, posture and the position etc. for obtaining motion carrier are integrated by high speed
Information, then with after anchor cable initial attitude and location information analysis comparison, to carry out real-time measurement to the deflection of prestress anchorage cable.
Meanwhile size and direction of the present invention using dynamometer measurement anchor cable bending deformation.
As shown in Fig. 2, in a specific embodiment of the present invention, the present invention includes four dynamometers 7, four springs 6 and four
Root metallic rod 5.Dynamometry hole 8 is deformed there are four symmetrically opening on drive end bearing bracket 2 and rear end cap 3.Each dynamometer 7 is before one
In the deformation dynamometry hole insertion sleeve 1 of end cap；Each metallic rod 5 is each passed through rear end cap 3；In sleeve, dynamometer center
Spring is equipped between the end of axis and the end of metallic rod.When prestress anchorage cable bending deformation, four deformation dynameter institutes
The deformation of generation and axle power are different, and by the numerical value of dynamometer in four dynamometry holes of analysis, can be derived that anchor cable bending becomes
The size and Orientation of shape.
Present invention efficiently solves prestress anchorage cable deep stress conventional means present in anchoring engineering can not be effective
The problem of monitoring.The present invention utilizes inertial navigation equipment and deformation monitoring equipment, and real-time monitoring prestress anchorage cable is long-term in slope reinforcement
Stress and deformation in operational process, and cause the response of anchor cable to deform because of rock mass deformation, obtain the size of anchor cable deformation
With direction, the angular speed and acceleration information obtained using gyroscope and gravitational accelerometer, analytical calculation obtains anchor cable stress
And geometric distortion information, and then the true 3 D deformation field of side slope can be inquired into, for the stability and peace for analyzing reinforcing side slope
Full property provides important reference, while can also obtain the real time execution trait information of anchor system, is prestress anchoraging system
The operational reliability of system and life prediction provide important references.The present invention is applied to Practical Project, it will obtains significant warp
Benefit of helping and social benefit.
Finally, it should be noted that above-described embodiments are merely to illustrate the technical scheme, rather than to it
Limitation；Although the present invention is described in detail referring to the foregoing embodiments, those skilled in the art should understand that:
It can still modify to technical solution documented by previous embodiment, or to part of or all technical features into
Row equivalent replacement；And these modifications or substitutions, it does not separate the essence of the corresponding technical solution various embodiments of the present invention technical side
The range of case.
Claims (3)
1. a kind of New Anchor Cable centering rack for monitoring prestress anchorage cable operating status, it is characterised in that: it includes sleeve, front end
Lid, rear end cap, inertial navigation equipment, metallic rod, spring and dynamometer；
The sleeve and drive end bearing bracket, rear end cap constitute an entirety；Deformation dynamometry hole, threading hole, note are provided on the drive end bearing bracket
Starch hole and inertial navigation hole；
The inertial navigation equipment is used to measure the bending deformation of prestress anchorage cable, which is put into the set through the inertial navigation hole
In cylinder, signal output line is pierced by through the threading hole；
The dynamometer is installed on the outside of the drive end bearing bracket, and the deformation dynamometry hole that central shaft passes through the drive end bearing bracket is protruded into described
In sleeve；The metallic rod protrudes into the sleeve through the rear end cap；In the sleeve, the center shaft end of the dynamometer
It is cased with the spring between portion and the end of the metallic rod, a flexible protective casing is cased with outside the spring；
After the inertial navigation equipment, spring, metallic rod are built in the sleeve, by the injected hole slip casting, described in guarantee
Component locations in sleeve are relatively fixed.
2. the New Anchor Cable centering rack of monitoring prestress anchorage cable operating status according to claim 1, it is characterised in that: institute
Stating inertial navigation equipment includes gyroscope and gravitational accelerometer；
The gyroscope and gravitational accelerometer are used to measure the spatial attitude of prestress anchorage cable, monitor the bending of prestress anchorage cable
Deformation.
3. the New Anchor Cable centering rack of monitoring prestress anchorage cable operating status according to claim 2, it is characterised in that: should
New Anchor Cable centering rack includes four dynamometers, four springs and four metallic rods；
Dynamometry hole is deformed there are four symmetrically opening on the drive end bearing bracket；
Each dynamometer is inserted into the sleeve from the deformation dynamometry hole of a drive end bearing bracket；Each metallic rod is worn respectively
Cross the rear end cap；In the sleeve, one is equipped between the end of the dynamometer central axis and the end of the metallic rod
Spring described in root；
When prestress anchorage cable bending deformation, deformation and axle power caused by four deformation dynameters are different, and are led to
The numerical value for crossing dynamometer described in four dynamometry holes of analysis, can be derived that the size and Orientation of anchor cable bending deformation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072251.3A CN109898566B (en) | 2019-01-25 | 2019-01-25 | Anchor cable centering frame for monitoring running state of prestressed anchor cable |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910072251.3A CN109898566B (en) | 2019-01-25 | 2019-01-25 | Anchor cable centering frame for monitoring running state of prestressed anchor cable |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109898566A true CN109898566A (en) | 2019-06-18 |
| CN109898566B CN109898566B (en) | 2020-06-16 |
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ID=66944053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910072251.3A Active CN109898566B (en) | 2019-01-25 | 2019-01-25 | Anchor cable centering frame for monitoring running state of prestressed anchor cable |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100242609A1 (en) * | 2009-03-26 | 2010-09-30 | Wei-Feng Lee | Bridge monitoring and safety evaluation method using a vibration technique |
| CN103644986A (en) * | 2013-12-24 | 2014-03-19 | 辽宁工程技术大学 | Hollow grouting anchor rod structure based mine pressure measuring device |
| CN203745118U (en) * | 2014-01-16 | 2014-07-30 | 昆明理工大学 | Device for improving accuracy of anchor cable dynamometer |
| CN206002227U (en) * | 2016-08-30 | 2017-03-08 | 南京南瑞集团公司 | A kind of prestressed tendon anchorage dynamemter |
| CN206248252U (en) * | 2016-12-05 | 2017-06-13 | 北京科技大学 | A kind of anchor pole axial direction dynamometer |
| CN107991189A (en) * | 2017-12-06 | 2018-05-04 | 东北大学 | A kind of prestressed cable anchorage performance testing device and test method |
-
2019
- 2019-01-25 CN CN201910072251.3A patent/CN109898566B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100242609A1 (en) * | 2009-03-26 | 2010-09-30 | Wei-Feng Lee | Bridge monitoring and safety evaluation method using a vibration technique |
| CN103644986A (en) * | 2013-12-24 | 2014-03-19 | 辽宁工程技术大学 | Hollow grouting anchor rod structure based mine pressure measuring device |
| CN203745118U (en) * | 2014-01-16 | 2014-07-30 | 昆明理工大学 | Device for improving accuracy of anchor cable dynamometer |
| CN206002227U (en) * | 2016-08-30 | 2017-03-08 | 南京南瑞集团公司 | A kind of prestressed tendon anchorage dynamemter |
| CN206248252U (en) * | 2016-12-05 | 2017-06-13 | 北京科技大学 | A kind of anchor pole axial direction dynamometer |
| CN107991189A (en) * | 2017-12-06 | 2018-05-04 | 东北大学 | A kind of prestressed cable anchorage performance testing device and test method |
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| Publication number | Publication date |
|---|---|
| CN109898566B (en) | 2020-06-16 |
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