CN107255466A - Monitoring method of the subsidence for cradle construction - Google Patents
Monitoring method of the subsidence for cradle construction Download PDFInfo
- Publication number
- CN107255466A CN107255466A CN201710527605.XA CN201710527605A CN107255466A CN 107255466 A CN107255466 A CN 107255466A CN 201710527605 A CN201710527605 A CN 201710527605A CN 107255466 A CN107255466 A CN 107255466A
- Authority
- CN
- China
- Prior art keywords
- bridge
- tubulose
- fbg
- monitoring
- construction
- 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.)
- Granted
Links
Classifications
-
- 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
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention provides a kind of Monitoring method of the subsidence for cradle construction, including：Multiple tubulose FBG monitoring parts are processed, each tubulose FBG monitoring part is respectively provided with multiple fiber gratings being connected with (FBG) demodulator；After the completion of multiple Bridge Pier Constructions, according to tubulose FBG monitoring part number between both the spacing of two neighboring bridge pier determinations；The construction reference bridge block on each bridge pier, by starting point of benchmark bridge block to its both sides construction connection bridge block, multiple connection bridge blocks positioned at bridge pier homonymy constitute bridge；While construction connection bridge block, tubulose FBG monitoring part is sequentially installed and along its construction direction for monitoring each bridge settlement situation, until the connection bridge block on two neighboring bridge pier closes up；And construction on bridge pier when symmetrically connecting bridge block, according to the sedimentation value ω of bridge pier side bridge1With the sedimentation value ω of opposite side bridge2Situation analyze in time reason, adjustment after construct again.The problem of settlement monitoring that the present invention solves cradle construction can not be monitored in real time.
Description
Technical field
The present invention relates to engineering construction field, in particular to a kind of Monitoring method of the subsidence for cradle construction.
Background technology
When cradle construction refers to the cantilever glider bridge of the continuous Long span of casting concrete, carry out segmentation cantilever using hanging basket method and make
Industry.Cantilever casting first pours benchmark bridge block, the form removal after concrete reaches design strength, and tensioning is longitudinal and transverse, vertical prestressing steel
Muscle, anchoring, mud jacking；Hanging Basket is longitudinally asymmetric, balance piecewise cantilever pouring until closure segment.It does not both need erection bracket, not yet
Need to use large-scale suspender.Its form of construction work has to spell compared with other method makes simple and convenient, the advantages of structure is light.However, whole
Individual work progress middle girder absolute altitude and internal stress are all continually changing.Wherein there is the influence of uncertain factor, including set
The many-sides such as computation model, material property, construction error are counted, is such as easily caused without strict monitoring and closes up difficulty,
Different degrees of hidden danger is brought to bridge construction, therefore, effective monitoring must be implemented in work progress.
In the prior art, total powerstation, precision level and level are mainly used for the Deflection deformation inspection of cantilever beam
Chi.However, the monitoring of total powerstation needs artificial pointwise monitoring, take time and effort, and can not monitor in real time, meanwhile, monitoring accuracy with
The operation of staff is relevant, causes its measurement error larger.If being set using the method for the measurement of the level on each piece of beam slab
Steel nail is put as the observation station of deflection monitoring, is periodically surveyed to being embedded in the measuring point on each section beam slab of constructing, then not
The sedimentation of cantilever beam can be monitored in real time, and then can not take corresponding behave to the sedimentation occurred in its work progress.
The content of the invention
It is a primary object of the present invention to provide a kind of Monitoring method of the subsidence for cradle construction, to solve prior art
In it is low to the settlement monitoring precision of cradle construction and the problem of can not monitor in real time.
To achieve these goals, the invention provides a kind of Monitoring method of the subsidence for cradle construction, including：Processing
Multiple tubulose FBG monitoring parts, each tubulose FBG monitoring part is respectively provided with multiple fiber gratings, and fiber grating and solution
Adjust instrument connection；After the completion of multiple Bridge Pier Constructions, according to the distance between two neighboring bridge pier, determine to make between two neighboring bridge pier
The number of tubulose FBG monitoring part；In the top surface construction reference bridge block of each bridge pier, using benchmark bridge block as starting point,
To the both sides construction connection bridge block of benchmark bridge block, multiple connection bridge blocks positioned at bridge pier the same side constitute bridge；Construction
While connecting bridge block, using benchmark bridge block as starting point, tubulose optical fiber light is sequentially installed along the construction direction of connection bridge block
Grid monitor part, until the connection bridge block on two neighboring bridge pier is to connecting, and by the tubulose optical fiber two neighboring bridge pier
Grating monitors part to untill connecting；The sedimentation situation of each bridge is monitored by multiple tubulose FBG monitoring parts thereon and drawn,
And construction on bridge pier when symmetrically connecting bridge block, according to the sedimentation value ω of the bridge of bridge pier side1With opposite side bridge
Sedimentation value ω2Situation analyze in time reason, adjustment after construct again.
Further, each tubulose FBG monitoring part includes：Installing pipe；It is arranged on four on the inner surface of installing pipe
Individual fiber grating, using bridge as reference, four fiber gratings two-by-two one group respectively be located at installing pipe both sides up and down, and with group in
Axially spaced-apart of two fiber gratings along installing pipe set.
Further, 1/2nd of the length L of installing pipe are equal to the distance between two fiber gratings in group A；
It is equal apart from B to installing pipe two ends respectively with two fiber gratings in group, and apart from B equal to the four of the length L of installing pipe
/ mono-.
Further, the distance of two neighboring bridge pier be equal to the length of multiple tubulose FBG monitoring parts that uses it
With.
Further, by sleeve pipe connection between two neighboring tubulose FBG monitoring part, and sleeve pipe is fixed on bridge
On.
Further, while construction connection bridge block, determined to fix according to the length of tubulose FBG monitoring part
Fixed support, is fixed on bridge by the position of support by fastener, and installs sleeve pipe on fixed support, by adjacent two
Individual tubulose FBG monitoring part connection.
Further, the optical fiber in two neighboring tubulose FBG monitoring part is connected by wire jumper；Or each tubulose optical fiber
Optical fiber in grating monitoring part is connected to (FBG) demodulator.
Further, before two neighboring bridge does not construct completion, the tubulose FBG monitoring part point on each bridge
It is not connected on different (FBG) demodulators；After two neighboring bridge construction is completed and is closed up, each tubulose on two neighboring bridge
FBG monitoring part is connected on same (FBG) demodulator.
Further, all fiber gratings in each tubulose FBG monitoring part are connected by an optical fiber, and tubulose
One end of FBG monitoring part is provided with through hole, and optical fiber is connected after being passed from through hole with (FBG) demodulator.
Apply the technical scheme of the present invention, staff construction bridge pier before, first measure two adjacent bridge piers between away from
From to determine number, the original position of tubulose FBG monitoring part.Afterwards, in the top surface construction reference bridge block of bridge pier, and
By starting point of benchmark bridge block to the both sides construction connection bridge block of benchmark bridge block, meanwhile, along the construction party of connection bridge block
To tubulose FBG monitoring part is sequentially installed, until the connection bridge block on two neighboring bridge pier is to connecting.
In above process, tubulose FBG monitoring part can not only in real time monitoring criteria bridge block and connection bridge block
Sedimentation change (amount of deflection change), if note abnormalities in time adjustment, analysis after be further continued for construct.Finally, treat that bridge is performed integrally
After closing up, tubulose FBG monitoring part can also monitor the sedimentation situation of whole bridge in real time.
Monitoring method of the subsidence in the application can not only in real time be monitored to bridge construction process, additionally it is possible to closing up
Bridge afterwards carries out the real-time monitoring of bulk settling, so that the security performance of the bridge completed using cradle construction is higher,
The frequency that bridge security accident occurs is reduced, is guaranteed personal safety.
Brief description of the drawings
The Figure of description for constituting the part of the application is used for providing a further understanding of the present invention, and of the invention shows
Meaning property embodiment and its illustrate be used for explain the present invention, do not constitute inappropriate limitation of the present invention.In the accompanying drawings：
Fig. 1 shows the bridge and the front view of bridge pier of the embodiment of the Monitoring method of the subsidence according to the present invention；
Fig. 2 shows the perspective of the tubulose FBG monitoring part of the embodiment of the Monitoring method of the subsidence according to the present invention
Figure；And
Fig. 3 shows the main view that the sleeve pipe of the embodiment of the Monitoring method of the subsidence according to the present invention is assembled with fixed support
Figure.
Wherein, above-mentioned accompanying drawing is marked including the following drawings：
10th, tubulose FBG monitoring part；11st, fiber grating；12nd, installing pipe；13rd, optical fiber；20th, bridge pier；30th, bridge；
31st, benchmark bridge block；32nd, bridge block is connected；40th, sleeve pipe；50th, fixed support；60th, fastener.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase
Mutually combination.Describe the present invention in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
It is pointed out that unless otherwise specified, all technologies used in this application and scientific terminology have and the application
The identical meanings that person of an ordinary skill in the technical field is generally understood that.
In the present invention, in the case where not making opposite explanation, the noun of locality used is typically pin such as " upper and lower, top, bottom "
For direction shown in the drawings, or for part in itself on vertical, vertical or gravity direction for；Equally
Ground, for ease of understanding and describing, " inside and outside " refers to the inside and outside of the profile relative to each part in itself, but the above-mentioned noun of locality is not
For limiting the present invention.
For low and the problem of can not monitor in real time, this hair that solves settlement monitoring precision in the prior art to cradle construction
It is bright to provide a kind of Monitoring method of the subsidence for cradle construction.
As depicted in figs. 1 and 2, the Monitoring method of the subsidence of the present embodiment includes processing multiple tubulose FBG monitoring parts
10.Wherein, each tubulose FBG monitoring part 10 is respectively provided with multiple fiber gratings 11, and fiber grating 11 is connected with (FBG) demodulator.
After the completion of multiple bridge piers 20 are constructed, according to the distance between two neighboring bridge pier 20, determine to use between two neighboring bridge pier 20
Tubulose FBG monitoring part 10 number；In the top surface construction reference bridge block 31 of each bridge pier 20, with benchmark bridge block 31
For starting point, to the both sides construction connection bridge block 32 of benchmark bridge block 31, multiple connection bridge blocks positioned at the same side of bridge pier 20
32 constitute bridge 30.It is starting point with benchmark bridge block 31 while construction connection bridge block 32, along the construction of connection bridge block 32
Tubulose FBG monitoring part 10 is sequentially installed in direction, until 32 pairs of connection bridge block on two neighboring bridge pier 20 is connected, and
Untill being connected by 10 pairs of tubulose FBG monitoring part two neighboring bridge pier 20.In above process, each bridge 30
Sedimentation situation is drawn by multiple tubulose FBG monitoring parts 10 monitoring thereon, and is constructed on the symmetrical connecting bridge of bridge pier 20
During beam block 32, according to the sedimentation value ω of the bridge 30 of the side of bridge pier 201With the sedimentation value ω of opposite side bridge 302Situation it is timely
Constructed again after analysis reason, adjustment.
It is starting point with the benchmark bridge block 31 on bridge pier 20, to benchmark bridge in Monitoring method of the subsidence in the present embodiment
The both sides construction connection bridge block 32 of beam block 31, and ultimately form bridge 30.Therefore, bridge 30 is symmetrical on bridge pier 20.
Using the technical scheme of the present embodiment, before staff's construction bridge pier 20, first measure two adjacent bridge piers 20 it
Between distance to determine number, the original position of tubulose FBG monitoring part 10.Afterwards, in the top surface construction reference of bridge pier 20
Bridge block 31, and be both sides construction connection bridge block 32 of the starting point to benchmark bridge block 31 with benchmark bridge block 31, meanwhile, along even
The construction direction for connecing bridge block 32 sequentially installs tubulose FBG monitoring part 10, until the connecting bridge on two neighboring bridge pier 20
32 pairs of beam block is connected.
In above process, tubulose FBG monitoring part 10 can not only monitoring criteria bridge block 31 and connecting bridge in real time
The sedimentation change (amount of deflection change) of beam block 32, if being further continued for construction after note abnormalities adjustment in time, analysis.Finally, bridge 30 is treated
It is performed integrally after closing up, tubulose FBG monitoring part 10 can also monitor the sedimentation situation of whole bridge 30 in real time.
So, in work progress, when (FBG) demodulator monitors that uneven situation occur in the both sides of bridge pier 20, then according to side bridge
The sedimentation value ω of beam 301With the sedimentation value ω of opposite side bridge 302Situation analyze in time reason, adjustment after construct again.
Monitoring method of the subsidence in the present embodiment can not only in real time be monitored to the work progress of bridge 30, additionally it is possible to right
Bridge 30 after closing up carries out the real-time monitoring of bulk settling, so that the security of the bridge 30 completed using cradle construction
Can be higher, the frequency that reduction bridge 30 security incident occurs guarantees personal safety.
The situation of uneven construction often occurs in engineering construction, the reason for causing uneven construct is as follows：
1st, the uneven perfusion of concrete；
2nd, the imbalance that workmen, construction equipment, construction material are stacked；
3rd, the imbalance of suspended basket；
4th, these factors of the influence of extraneous factor wind load, which are added, can produce the balance moment of flexure of thousands of tons of.
In order to prevent the bridge 30 in the present embodiment from occurring uneven construction, now its work progress is supervised in real time
Control, the amount of deflection situation of change of real-time monitored bridge 30, if being further continued for construction after note abnormalities adjustment in time, analysis.
As shown in Fig. 2 in the Monitoring method of the subsidence of the present embodiment, each tubulose FBG monitoring part 10 includes installing
Pipe 12 and fiber grating 11.Wherein, fiber grating 11 is four and is arranged on the inner surface of installing pipe 12.It is ginseng with bridge 30
According to, four fiber gratings 11 two-by-two one group be located at installing pipe 12 respectively both sides up and down, and with two fiber gratings 11 in group
Set along the axially spaced-apart of installing pipe 12.Alternatively, fiber grating 11 and the bonding connection of installing pipe 12.Encapsulated by the above method
Tubulose FBG monitoring part 10 afterwards can carry out a large amount of standardized productions, be adapted to transport, installation and removal.
Alternatively, installing pipe 12 is pipe.Simple in construction, the easily construction of said structure.
It should be noted that the structure not limited to this of installing pipe 12.Alternatively, installing pipe 12 can be other shapes, such as
Elliptical tube, rectangular tube etc..In addition, the length of installing pipe 12 can be changed according to the distance between two neighboring bridge pier 20.Meanwhile,
The material and wall thickness of installing pipe 12 can also be adjusted according to actual condition.
As shown in Fig. 2 in the Monitoring method of the subsidence of the present embodiment, two groups of fiber gratings 11 are in the axial direction of installing pipe 12
Position is identical, i.e., different groups of fiber grating 11 is corresponded in the both sides up and down of installing pipe 12 to be set.Above-mentioned setting can disappear
Except the influence to monitoring result of axial load and temperature action of installing pipe 12.
As shown in Fig. 2 in the Monitoring method of the subsidence of the present embodiment, with the distance between two fiber gratings 11 in group
A is equal to 1/2nd of the length L of installing pipe 12.With two fiber gratings 11 in group respectively to the distance at the two ends of installing pipe 12
B is equal, then is equal to the length L of installing pipe 12 a quarter apart from B.Above-mentioned setting causes fiber grating 11 to installing pipe 12
Strain measurement is more accurate, accurate, so as to improve tubulose FBG monitoring part 10 to benchmark bridge block 31 and connection bridge block
32, in addition the settlement monitoring of bridge 30 accuracy, accuracy.
In Monitoring method of the subsidence in the present embodiment, the distance of two neighboring bridge pier 20 is equal to the multiple tubular lights used
Fine grating monitors the length sum of part 10.Above-mentioned setting can not only ensure tubulose FBG monitoring part 10 to institute on bridge pier 20
Some benchmark bridge blocks 31 and connection bridge block 32 carry out real-time settlement monitoring, will not also waste tubulose FBG monitoring part
10, so that tubulose FBG monitoring part 10 obtains reasonable employment.
In the Monitoring method of the subsidence of the present embodiment, sleeve pipe 40 is passed through between two neighboring tubulose FBG monitoring part 10
Connect, and sleeve pipe 40 is fixed on bridge 30.Specifically, two neighboring tubulose FBG monitoring part 10 is connected using sleeve pipe 40
Connect, sleeve pipe 40 is fixed on bridge 30 again afterwards.Above-mentioned setting not only realize two tubulose FBG monitoring parts 10 it
Between connection, additionally it is possible to by being fixedly connected for tubulose FBG monitoring part 10 and bridge 30.Meanwhile, the structure letter of said structure
It is single, easily assembling.
Specifically, one end of a tubulose FBG monitoring part 10 and another adjacent tubulose FBG monitoring part
10 one end is stretched in sleeve pipe 40, and sleeve pipe 40 is tightened by the fastening bolt set on the periphery of sleeve pipe 40 afterwards,
So as to which two neighboring tubulose FBG monitoring part 10 be linked together.
As shown in Figure 1 to Figure 3, in the Monitoring method of the subsidence of the present embodiment, while construction connection bridge block 32, root
The position of fixed support 50 is determined according to the length of tubulose FBG monitoring part 10, fixed support 50 is fixed by fastener 60
Sleeve pipe 40 is installed on bridge 30, and on fixed support 50, two neighboring tubulose FBG monitoring part 10 is connected.Tool
Body, the through hole worn for fastener 60 is provided with fixed support 50.
Alternatively, fastener 60 is setscrew.
Specifically, it will first be connected between two neighboring tubulose FBG monitoring part 10 by sleeve pipe 40, and in bridge 30
On setscrew is beaten according to the length of installing pipe 12, sleeve pipe 40 is arranged on fixed support 50, is afterwards again worn setscrew
The through hole crossed on fixed support 50, so as to realize being fixedly connected for fixed support 50 and bridge 30.
In the Monitoring method of the subsidence of the present embodiment, the benchmark bridge block 31 for completing in staff each bridge 30 is applied
After work, and two neighboring bridge 30 is not constructed before completing, and tubulose FBG monitoring part 10 is installed on benchmark bridge block 31
And the optical fiber 13 in tubulose FBG monitoring part 10 is respectively connecting to different (FBG) demodulators.Afterwards, with benchmark bridge block 31
For starting point, bridge block 32 is connected to the both sides construction of benchmark bridge block 31, meanwhile, it is starting point with benchmark bridge block 31, along connection
The construction direction of bridge block 32 is sequentially installed in tubulose FBG monitoring part 10, two neighboring tubulose FBG monitoring part 10
Optical fiber 13 connected by wire jumper, and series connection after tubulose FBG monitoring part 10 be connected on (FBG) demodulator.Phase is monitored in real time
The settling amount of adjacent bridge 30, it is ensured that in work progress settling amount in the reasonable scope, so as to realize the optimal of adjacent bridge 30
Close up (either flush of adjacent bridge 30).Finally, treat that 32 pairs of connection bridge block on two neighboring bridge pier 20 is connected and completed
After closing up, and connected by 10 pairs of tubulose FBG monitoring part two neighboring bridge pier 20, by the tubulose after all series connection
FBG monitoring part 10 is connected on same (FBG) demodulator, so that the sedimentation to whole bridge 30 is monitored in real time.
As shown in Fig. 2 in the Monitoring method of the subsidence of the present embodiment, all light in each tubulose FBG monitoring part 10
Fine grating 11 is connected by an optical fiber 13, and one end of tubulose FBG monitoring part 10 is provided with through hole, and optical fiber 13 is from logical
Hole is connected after passing with (FBG) demodulator.Alternatively, the one end for the tubulose FBG monitoring part 10 installed on benchmark bridge block 31
Through hole is set.
Specifically, each fiber grating 11 in tubulose FBG monitoring part 10 uses welding and multiple optical fiber with optical fiber 13
Connect, and all fiber gratings 11 are connected by an optical fiber 13, realize to four fiber gratings 11 from beginning to end between grating 11
Monitor simultaneously, because four fiber gratings 11 are located on same optical fiber 13, so the natural wavelength of each fiber grating 11 must
Must be different, wavelength difference is in more than 5nm.Afterwards, mark the paste position of fiber grating 11 in the outside of installing pipe 12 and mark light
The natural wavelength of fine grating 11.
It should be noted that fiber grating 11 can also be structure as a whole with optical fiber 13, i.e., inscribe light extraction on optical fiber 13
Fine grating 11.Said structure can improve the monitoring accuracy of fiber grating 11 so that the processing of tubulose FBG monitoring part 10
It is more quick.
Specifically, the Monitoring Data of tubulose FBG monitoring part 10 is connected to (FBG) demodulator by optical fiber 13, passes through afterwards
Wireless network or GPRS send data to computer, and the numerical value on (FBG) demodulator is further analyzed computer, so that in real time
The sedimentation change of the bridge 30 of tubulose FBG monitoring part 10 has been installed in monitoring.
As can be seen from the above description, the above embodiments of the present invention realize following technique effect：
Before staff's construction bridge pier, first measure the distance between two adjacent bridge piers to determine that tubulose fiber grating is supervised
Survey number, the original position of part.Afterwards, in the top surface construction reference bridge block of bridge pier, and by starting point of benchmark bridge block to base
The both sides construction connection bridge block of quasi- bridge block, meanwhile, tubulose fiber grating is sequentially installed along the construction direction of connection bridge block
Part is monitored, until the connection bridge block on two neighboring bridge pier is to connecting.
In above process, tubulose FBG monitoring part can not only in real time monitoring criteria bridge block and connection bridge block
Sedimentation change (amount of deflection change), if note abnormalities in time adjustment, analysis after be further continued for construct.Treat that multiple bridges have been constructed respectively
Cheng Hou, additionally it is possible to monitor the sedimentation value relation between adjacent bridge, so that it is determined that needing to carry out the bridge of counterweight.Finally, bridge is treated
Beam is performed integrally close up after, tubulose FBG monitoring part can also monitor the sedimentation situation of whole bridge in real time.
Monitoring method of the subsidence in the application can not only in real time be monitored to bridge construction process, additionally it is possible to closing up
Bridge afterwards carries out the real-time monitoring of bulk settling, so that the security performance of the bridge completed using cradle construction is higher,
The frequency that bridge security accident occurs is reduced, is guaranteed personal safety.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies
Change, equivalent substitution, improvement etc., should be included in the scope of the protection.
Claims (9)
1. a kind of Monitoring method of the subsidence for cradle construction, it is characterised in that including：
Multiple tubulose FBG monitoring parts (10) are processed, each tubulose FBG monitoring part (10) is respectively provided with multiple optical fiber
Grating (11), and the fiber grating (11) is connected with (FBG) demodulator；
After the completion of multiple bridge pier (20) constructions, according to the distance between two neighboring described bridge pier (20), two neighboring institute is determined
State the number of the tubulose FBG monitoring part (10) used between bridge pier (20)；Applied in the top surface of each bridge pier (20)
Work benchmark bridge block (31), with the benchmark bridge block (31) for starting point, constructs to the both sides of the benchmark bridge block (31) and connects
Bridge block (32) is connect, multiple connection bridge blocks (32) positioned at the bridge pier (20) the same side constitute bridge (30)；
Construction it is described connection bridge block (32) while, with the benchmark bridge block (31) be starting point, along it is described connection bridge block
(32) construction direction sequentially installs the tubulose FBG monitoring part (10), until on the two neighboring bridge pier (20)
The connection bridge block (32) is to connecting, and by the tubulose FBG monitoring part the two neighboring bridge pier (20)
(10) to untill connecting；
The sedimentation situation of each bridge (30) is monitored by multiple tubulose FBG monitoring parts (10) thereon and drawn, and
When construction symmetrically connects bridge block (32) on the bridge pier (20), according to the bridge (30) of the bridge pier (20) side
Sedimentation value ω1With the sedimentation value ω of bridge described in opposite side (30)2Situation analyze in time reason, adjustment after construct again.
2. Monitoring method of the subsidence according to claim 1, it is characterised in that each tubulose FBG monitoring part (10)
Include：
Installing pipe (12)；
Four fiber gratings (11) being arranged on the inner surface of the installing pipe (12), are ginseng with the bridge (30)
According to, four fiber gratings (11) two-by-two one group be located at the installing pipe (12) respectively both sides up and down, and with two in group
Axially spaced-apart of the individual fiber grating (11) along the installing pipe (12) is set.
3. Monitoring method of the subsidence according to claim 2, it is characterised in that
With the distance between two fiber gratings (11) in group A be equal to the installing pipe (12) length L two/
One；
It is equal apart from B to the installing pipe (12) two ends respectively with two fiber gratings (11) in group, and it is described away from
From a quarter for the length L that B is equal to the installing pipe (12).
4. Monitoring method of the subsidence according to claim 1, it is characterised in that distance of the two neighboring bridge pier (20) etc.
In the length sum of the multiple tubulose FBG monitoring parts (10) used.
5. Monitoring method of the subsidence according to claim 4, it is characterised in that the two neighboring tubulose FBG monitoring
Connected between part (10) by sleeve pipe (40), and described sleeve pipe (40) is fixed on the bridge (30).
6. Monitoring method of the subsidence according to claim 5, it is characterised in that in the same of the connection bridge block (32) of constructing
When, the position of fixed support (50) is determined according to the length of the tubulose FBG monitoring part (10), is passed through fastener (60)
The fixed support (50) is fixed on the bridge (30), and described sleeve pipe is installed on the fixed support (50)
(40), the two neighboring tubulose FBG monitoring part (10) is connected.
7. Monitoring method of the subsidence according to claim 1, it is characterised in that
Optical fiber (13) in the two neighboring tubulose FBG monitoring part (10) is connected by wire jumper；Or
Optical fiber (13) in each tubulose FBG monitoring part (10) is connected to the (FBG) demodulator.
8. Monitoring method of the subsidence according to claim 1, it is characterised in that
Before the two neighboring bridge (30) does not construct completion, the tubulose fiber grating prison on each bridge (30)
Part (10) is surveyed to be respectively connecting on the different (FBG) demodulators；After two neighboring bridge (30) construction is completed and is closed up,
Each tubulose FBG monitoring part (10) on the two neighboring bridge (30) is connected to the same (FBG) demodulator
On.
9. Monitoring method of the subsidence according to claim 1, it is characterised in that each tubulose FBG monitoring part (10)
Interior all fiber gratings (11) are connected by an optical fiber (13), and the one of the tubulose FBG monitoring part (10)
End is provided with through hole, and the optical fiber (13) is connected after being passed from the through hole with the (FBG) demodulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527605.XA CN107255466B (en) | 2017-06-30 | 2017-06-30 | Monitoring method of the subsidence for cradle construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710527605.XA CN107255466B (en) | 2017-06-30 | 2017-06-30 | Monitoring method of the subsidence for cradle construction |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107255466A true CN107255466A (en) | 2017-10-17 |
| CN107255466B CN107255466B (en) | 2019-11-19 |
Family
ID=60024747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710527605.XA Active CN107255466B (en) | 2017-06-30 | 2017-06-30 | Monitoring method of the subsidence for cradle construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107255466B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562266A (en) * | 2018-03-30 | 2018-09-21 | 胡仲春 | Monitoring method of the subsidence for cantilever casting |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202693118U (en) * | 2012-07-26 | 2013-01-23 | 中铁二院工程集团有限责任公司 | FBG (Fiber Bragg Grating) two-dimensional vibration sensor |
| CN104457690A (en) * | 2013-09-12 | 2015-03-25 | 天津智树电子科技有限公司 | Sensing rod for monitoring building settlement and monitoring method using the same |
| CN205426143U (en) * | 2016-03-31 | 2016-08-03 | 西安科技大学 | Highway warp monitoring devices |
| CN205448988U (en) * | 2016-03-03 | 2016-08-10 | 济南达慧光电科技有限公司 | Basket deformation real -time supervision device is hung in construction |
-
2017
- 2017-06-30 CN CN201710527605.XA patent/CN107255466B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202693118U (en) * | 2012-07-26 | 2013-01-23 | 中铁二院工程集团有限责任公司 | FBG (Fiber Bragg Grating) two-dimensional vibration sensor |
| CN104457690A (en) * | 2013-09-12 | 2015-03-25 | 天津智树电子科技有限公司 | Sensing rod for monitoring building settlement and monitoring method using the same |
| CN205448988U (en) * | 2016-03-03 | 2016-08-10 | 济南达慧光电科技有限公司 | Basket deformation real -time supervision device is hung in construction |
| CN205426143U (en) * | 2016-03-31 | 2016-08-03 | 西安科技大学 | Highway warp monitoring devices |
Non-Patent Citations (3)
| Title |
|---|
| 孙汝姣 等: "FBG传感技术在大型桥梁健康监测中的应用", 《同济大学学报（自然科学版）》 * |
| 沪汉蓉铁路湖北有限责任公司: "《武汉天兴洲公铁两用长江大桥工程建设总结》", 30 April 2011, 中国铁道出版社 * |
| 禹鹏: "桥梁监测中应变测试技术研究", 《中国优秀硕士学位论文全文数据库工程科技Ⅱ辑》 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108562266A (en) * | 2018-03-30 | 2018-09-21 | 胡仲春 | Monitoring method of the subsidence for cantilever casting |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107255466B (en) | 2019-11-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107025342B (en) | Suspension cable single tension Dynamic Construction control method based on basis of sensitivity analysis | |
| CN101893497B (en) | Out-of-plane frequency method for testing cable force of planar cable rod system | |
| CN107587429B (en) | Cord clip of suspension bridge installation site modification method | |
| CN109137744B (en) | Asymmetric construction method and control method for main truss of large-span flexible suspension bridge | |
| CN104213508B (en) | A kind of method utilizing stull and external tendon to control king-post displacement | |
| CN103603262A (en) | Linear form control method for large-span continuous beam of oblique high pier | |
| CN102243671A (en) | Method for analyzing temperature gradient effect of flat steel box girder of long-span steel bridge | |
| CN111914458B (en) | Method for controlling line shape of arch ring of reinforced concrete arch bridge | |
| CN107642225A (en) | A kind of hanging scaffold and its assembly and method for dismounting | |
| CN106988231A (en) | The T-shaped firm structure line style monitoring point mounting structure of cantilever and its line type control monitoring method | |
| CN100545353C (en) | Adopt external eccentric prestress system to carry out steel girder cantilever erection construction method | |
| CN107255466A (en) | Monitoring method of the subsidence for cradle construction | |
| CN106403858B (en) | A kind of superaltitude large cantilever steel platform tip deflection monitoring method | |
| Yuan et al. | Replacement of the fire-damaged long suspenders of the Runyang Suspension Bridge | |
| Lan et al. | Research on the suspender replacement process of arch bridge based on the measured displacement correction | |
| CN111175068A (en) | Device and method for typical damage simulation of cable-stayed bridge | |
| Shen et al. | Ultimate capacity of narrow type steel box section for railway self-anchored suspension bridge under bias compression | |
| WO2013007382A1 (en) | Method for determining the stability of a mast that has been properly installed at an installation site | |
| CN101994294A (en) | Casting construction of triangular light hanging basket cantilever for highway engineering | |
| CN114319127A (en) | Unloading method for bridge support frame | |
| CN206916632U (en) | The T-shaped just structure line style monitoring point mounting structure of cantilever | |
| Spyrakos et al. | Validated analysis of wheeling suspension bridge | |
| Yang et al. | Wind suction effect on long-span stiffened steel truss bridges during erection | |
| CN216615511U (en) | Lifting equipment for mounting cross-river variable-section continuous steel box girder | |
| Hyppolito | Effect of Cable Damage on the Structural Behaviour of a Cable-Stayed Bridge |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20221207 Address after: 250014 No. 1 Heping Road, Lixia District, Shandong, Ji'nan Patentee after: TIEZHENG TESTING TECHNOLOGY Co.,Ltd. Address before: Block a, Tiejian building, 2666 Aoti West Road, Lixia District, Jinan City, Shandong Province Patentee before: CHINA RAILWAY SHISIJU Group Corp. |