CN207032055U - Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus - Google Patents
Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus Download PDFInfo
- Publication number
- CN207032055U CN207032055U CN201720927844.XU CN201720927844U CN207032055U CN 207032055 U CN207032055 U CN 207032055U CN 201720927844 U CN201720927844 U CN 201720927844U CN 207032055 U CN207032055 U CN 207032055U
- Authority
- CN
- China
- Prior art keywords
- prism
- shaped component
- stayed bridge
- measurement apparatus
- tower column
- 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.)
- Active
Links
Landscapes
- Bridges Or Land Bridges (AREA)
Abstract
The utility model discloses a kind of Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus, is related to Tower Column of A Cable Stayed Bridge beam synchronous construction fields of measurement.The device includes the first total powerstation, the second total powerstation and two-way prism bracket device, the both ends of two-way prism bracket device are respectively arranged with the first prism, the second prism, two-way prism bracket device is arranged on king-post wall, first total powerstation and the second total powerstation be respectively disposed on the first control stake, second control stake on, first control stake and second control stake on be respectively arranged with the first control point A, the second control point B.The utility model had both played the advantage of total powerstation precision distance measurement, and reduced the precision for apart from observation error influence, substantially increasing king-post along bridge to displacement measurement in real time.
Description
Technical field
Tower Column of A Cable Stayed Bridge beam synchronous construction fields of measurement is the utility model is related to, it is synchronous to be specifically related to a kind of Tower Column of A Cable Stayed Bridge beam
Construction survey device.
Background technology
It is unbalanced because impossible fully equalize along beam body load of the bridge to both sides installed in king-post in tower beam synchronous construction
Beam body load be delivered to by inclined guy cable stretching on king-post, cause king-post produce horizontal displacement, cause king-post axis bending, sternly
Ghost image rings king-post subsequent construction section axial line control, it is difficult to ensures that king-post axis is straight, is brought to king-post construction safety and quality
Very big hidden danger.Therefore must change place value of the accurate measurement king-post under unbalanced load in tower beam synchronous construction.
The measurement of tower beam synchronous construction is exactly variation tendency of the observation tower mast axis under unbalanced load, by observing king-post
Construct the change place values of section multiple section measuring points from low to high, the practical distortion curve of king-post axis has been drawn, according to king-post axle
The variation tendency of line, extrapolates the king-post displacement correction value of section to be onstructed, and then template to section to be onstructed, works
Theoretical position is modified, and makes king-post axis straight.The core of tower beam synchronous construction measurement is that king-post measures along bridge to displacement,
During tower beam synchronous construction, changed by beam body load, king-post along bridge to displacement be cause king-post axis change it is main because
Element, the displacement of king-post direction across bridge can be ignored in contrast.
In conventional tower beam synchronous construction, king-post uses unidirectional three-dimensional coordinate method along bridge to displacement measuring method, i.e., on ground
A control point on dispose total powerstation, another control point of backsight, the drying straight angle and vertical angle, direct observation tower column(ar) deflection monitoring
The three-dimensional coordinate of point, it is poor by comparing observation coordinate before and after tower beam synchronous construction, show that the king-post at monitoring point becomes place value.Cause
Nonreciprocal observation has only been carried out for unidirectional three-dimensional coordinate method, has been difficult to weaken apart from observation error, and monitoring point and two controls
There is horizontal angle and dial angle error in point, have impact on precision of the king-post along bridge to displacement measurement not in same vertical plane.
300 meters or so of superelevation tower is higher to the requirement of displacement along bridge to king-post, and king-post anchoring piece coordinate tolerance is not
More than 3mm, this requires that error is not more than 1.5mm in king-post displacement measurement.Traditional unidirectional three-dimensional coordinate measurement method is difficult to full
The superelevation tower king-post displacement measurement accuracy requirement of 300 meters or so of foot.
Utility model content
The purpose of this utility model is to overcome the shortcomings of above-mentioned background technology, there is provided a kind of Tower Column of A Cable Stayed Bridge beam is synchronously applied
Work measurement apparatus, there is the characteristics of high accuracy, measure in real time, both played the advantage of total powerstation precision distance measurement, and subtract in real time
It is weak to be influenceed apart from observation error, substantially increase precision of the king-post along bridge to displacement measurement.
The utility model provides a kind of Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus, and the device includes the first total powerstation, the
Two total powerstations and two-way prism bracket device, the both ends of the two-way prism bracket device are respectively arranged with the first prism, second
Prism, the two-way prism bracket device are arranged on king-post wall, and first total powerstation and the second total powerstation are respectively disposed on
In first control stake, the second control stake, the first control point A, the are respectively arranged with the first control stake and the second control stake
The center T1 of two control point B, the first control point A and the second control point B and the first prism, the center T2 of the second prism are same
On one vertical plane, and it is parallel with the bridge center line of cable-stayed bridge.
On the basis of above-mentioned technical proposal, the two-way prism bracket device includes T-shaped component and prism bar, the first rib
Mirror, the second prism are located at the both ends of prism bar respectively.
On the basis of above-mentioned technical proposal, the T-shaped component is hinged with prism bar.
On the basis of above-mentioned technical proposal, long levelling tube is provided with the prism bar.
On the basis of above-mentioned technical proposal, the both sides of the prism bar are provided with vernier knob, and prism bar passes through
Vernier knob leveling, during prism bar leveling, vernier knob is resisted against on T-shaped component.
On the basis of above-mentioned technical proposal, the T-shaped component includes T-shaped component expansion link, connected with T-shaped component expansion link
The T-shaped component end plate connect, T-shaped component expansion link and T-shaped component end plate are mutually perpendicular to arrange.
On the basis of above-mentioned technical proposal, the end set of the T-shaped component expansion link has screw, and T-shaped component is stretched
Contracting bar is screwed on king-post.
On the basis of above-mentioned technical proposal, tightening knob is provided with the T-shaped component expansion link.
On the basis of above-mentioned technical proposal, free bearing is provided with the middle part of the T-shaped component end plate, in the prism bar
Portion is provided with connecting hole, and the T-shaped component end plate is hinged by link bolt and prism bar, the link bolt through free bearing and
Connecting hole.
On the basis of above-mentioned technical proposal, the T-shaped component expansion link and T-shaped component end plate are connected by fastening bolt
Connect, the end set of the T-shaped component expansion link has the first bolt hole, and the second spiral shell is provided with the middle part of the T-shaped component end plate
Keyhole, the fastening bolt pass through the first bolt hole and the second bolt hole.
Compared with prior art, it is as follows the advantages of the utility model：Tower beam synchronous construction measurement apparatus of the present utility model
With the characteristics of simple in construction, measurement is accurate, by real-time range difference measurement, the excellent of total powerstation precision distance measurement had both been played
Gesture, and the precision for apart from observation error influence, substantially increasing king-post along bridge to displacement measurement is reduced in real time.It is particularly suitable for use in
The accurate displacement measurement of 300 meters or so of superelevation tower king-post and the high accuracy displacement measurement of king-post benchmark section.Meanwhile this practicality is new
The tower beam synchronous construction measurement apparatus of type, is also suitable in suspension bridge superstructure installation process, king-post is by unbalanced load
Under the influence of suitable bridge to precision displacement measurement.
Brief description of the drawings
Fig. 1 is the main structure diagram of the utility model embodiment Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus.
Fig. 2 is Fig. 1 overlooking the structure diagram.
Fig. 3 is the main structure diagram of the two-way prism bracket device of the utility model embodiment, wherein, two-way prism branch
Rack device is provided at both ends with prism.
Fig. 4 is Fig. 3 overlooking the structure diagram.
Fig. 5 is the structural representation of the utility model embodiment prism bar, wherein, prism bar is provided at both ends with prism.
Fig. 6 is the structural representation of the T-shaped component end plate of the utility model embodiment.
Fig. 7 is Fig. 6 overlooking the structure diagram.
Fig. 8 is the structural representation of the T-shaped component expansion link of the utility model embodiment.
Reference：The two-way prism bracket devices of 1-, 2-T type components, 3-T type component expansion links, 4-T type component end plates,
5- fastening bolts, 6- free bearings, 7- link bolts, 8- prism bars, the long levelling tubes of 9-, 10- vernier knobs, the bolts hole of 111- first,
The bolts hole of 112- second, 12- screws, 13- king-posts, 14- bridge center lines, 15- first control stake, and 16- second controls stake, 17- the
One total powerstation, the total powerstations of 18- second, the prisms of 19- first, the prisms of 20- second, 21- tightening knobs, 22- connecting holes, A- first are controlled
It is processed, the control points of B- second, the center of the prisms of T1- first, the center of the prisms of T2- second.
Embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described in further detail to the utility model.
Shown in Figure 1, the utility model embodiment provides a kind of Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus, the device
Including the first total powerstation 17, the second total powerstation 18 and two-way prism bracket device 1, the both ends of two-way prism bracket device 1 are distinguished
The first prism 19, the second prism 20 are provided with, two-way prism bracket device 1 is arranged on the wall of king-post 13, the He of the first total powerstation 17
Second total powerstation 18 is respectively disposed in the first control stake 15, second control stake 16, and the first control stake 15 and second controls stake 16
On be respectively arranged with the first control point A, the second control point B.
It is shown in Figure 2, the first control point A and the center T1 of the second control point B and the first prism 19, the second prism 20
Center T2 is and parallel with the bridge center line 14 of cable-stayed bridge on same vertical plane.
Shown in Figure 3, the first prism 19, the second prism 20 are located at the both ends of prism bar 8 respectively, are set on prism bar 8
There is long levelling tube 9, the both sides of prism bar 8 are provided with vernier knob 10, and prism bar 8 passes through the leveling of vernier knob 10, prism
During 8 leveling of bar, vernier knob 10 is resisted against on T-shaped component 2.
Shown in Figure 4, two-way prism bracket device 1 includes T-shaped component 2 and prism bar 8, T-shaped component 2 and prism bar 8
It is be hinged.The T-shaped component end plate 4 that T-shaped component 2 includes T-shaped component expansion link 3, is connected with T-shaped component expansion link 3, T-shaped component are stretched
Contracting bar 3 and T-shaped component end plate 4 be mutually perpendicular to arrange, the end set of T-shaped component expansion link 3 has screw 12, and T-shaped component is stretched
Contracting bar 3 is fixed on king-post 13 by screw 12.
Shown in Figure 5, the middle part of prism bar 8 is provided with connecting hole 22；It is shown in Figure 6, in T-shaped component end plate 4
Portion is provided with free bearing 6, and T-shaped component end plate 4 is be hinged by link bolt 7 and prism bar 8, and link bolt 7 is through free bearing 6 and connects
Hole 22.Referring to shown in Fig. 6, Fig. 7, Fig. 8, T-shaped component expansion link 3 and T-shaped component end plate 4 are connected by fastening bolt 5, T-shaped structure
The end set of part expansion link 3 has the first bolt hole 111, and the middle part of T-shaped component end plate 4 is provided with the second bolt hole 112, fastening
Bolt 5 passes through the first bolt hole 111 and the second bolt hole 112.
It is shown in Figure 8, tightening knob 21 is provided with T-shaped component expansion link 3, and realize by tightening tightening knob 21
Lock the length of T-shaped component expansion link 3.
In actual applications, the utility model is used for Tower Column of A Cable Stayed Bridge beam synchronous construction measuring method, comprises the following steps：
S1, the first control stake 15, second control stake 16 is respectively arranged on completion bridge pier on the both sides of king-post 13, in the first control
First control point A is set in stake 15 processed, second control point B is set in the second control stake 16, makes the first control point A, the second control
Point B bridge center line 14 of the line parallel to cable-stayed bridge is made, and measures the horizontal range between the first control point A, the second control point B
SAB；
S2, the first total powerstation 17, the second total powerstation 18 be respectively disposed in the first control stake 15, second control stake 16,
The second control point of the backsight B of first total powerstation 17, the first control point of the backsight A of the second total powerstation 18；
First prism 19, the second prism 20 are arranged on king-post 13 by S3, the two-way prism bracket device 1 of installation
On two-way prism bracket device 1, two-way prism bracket device 1 is adjusted, is made in the center T1 of the first prism 19, the second prism 20
Heart T2 and the first control point A, the second control point B are in same vertical plane, and the first prism 19 of adjustment is adjusted towards the first total powerstation 17
Whole second prism 20 is towards the second total powerstation 18；
S4, before tower beam synchronous construction, with the first total powerstation 17 measure the first control point A, the first prism 19 center T1
Between it is first flat away from SAT1, second between the center T2 of the second control point B, the second prism 20 is measured with the second total powerstation 18
Put down away from SBT2, by apart from difference, showing that first is flat away from SAT1It is differentiated it is flat away fromSecond is flat away from SBT2It is differentiated it is flat away fromThe initial value conjugated as king-post 13；
S5, after tower beam synchronous construction, with the first total powerstation 17 measure the first control point A, the first prism 19 center T1
Between it is the 3rd flat away from SAT1＇, the 4th between the center T2 of the second control point B, the second prism 20 is measured with the second total powerstation 18
Put down away from SBT2＇, by apart from difference, showing that the 3rd is flat away from SAT1＇ it is differentiated it is flat away fromSiping City is away from SBT2＇ is differentiated
It is flat away fromRespectively with the displacement initial value of king-post 13WithCompare, and calculate the difference average value △ of the two
S, that is, suitable bridge of the king-post 13 before and after load imbalance is obtained to change place value；
S6, during tower beam synchronous construction, before and after the various operating modes that each section king-post 13 is constructed, repeat step S4, S5,
Difference average value △ S before and after the various operating modes of survey calculation, that is, suitable bridge of the king-post 13 before and after various operating modes is obtained to change place value.
Wherein, in step S4, first is flat away from SAT1It is differentiated it is flat away fromCalculation formula be：
Wherein, L is the center T1 to the center T2 of the second prism 20 of the first prism 19 spacing；
Second is flat away from SBT2It is differentiated it is flat away fromCalculation formula be：
Wherein, in step S5, the 3rd is flat away from SAT1＇ it is differentiated it is flat away fromCalculation formula be：
Siping City is away from SBT2＇ it is differentiated it is flat away fromCalculation formula be：
Wherein, in step S6, difference average value △ S calculation formula is：
Bring the result of calculation of calculation formula (1), (2), (3), (4) into formula (5), you can difference average value is calculated
△ S value, i.e., along bridge to become place value.
In actual applications, in step S1, horizontal range SABThe first control point A, can be repeatedly measured by total powerstation
Horizontal range between two control point B, takes it to be averagely worth to.In step S3, adjusting two-way prism bracket device 1 makes the first rib
The center T1 of mirror 19, the center T2 and the first control point A of the second prism 20, the second control point B are in specific in same vertical plane
Operate and be：Tightening knob 21 is unclamped, adjusts length and the direction of T-shaped component 2, makes center T1, the second prism of the first prism 19
20 center T2 and the first control point A, the second control point B are in same vertical plane, are screwed tightening knob 21, are locked T-shaped component
The length of expansion link 3.In step S4, the first total powerstation 17, the measurement of the second total powerstation 18 need to be in king-post load equilibrium, meteorological stabilizations
Carried out under conditions of (before sunrise, gentle breeze, difference variation small)；In step S5, the first total powerstation 17, the measurement of the second total powerstation 18 need
King-post load it is uneven, carry out under conditions of meteorological stable (before sunrise, gentle breeze, difference variation small).
It is 0.5 according to nominal accuracy during practice of construction ", 0.6+1ppm × D TM50 total powerstations are oblique to certain
Draw bridge tower beam synchronous construction to carry out king-post to observe to displacement along bridge.Certain bridge design main span is 1092m, the high 326m of king-tower.Total powerstation
Observation oblique distance D to prism is up to 1140m, and vertical angle a is up to 17 °, TM50 total powerstation angle errors Ma=± 0.5 ", survey
Away from error MD=0.6mm+1 × 10-6× 1140000mm=1.74mm, according to the flat measurement error formula away from S：
Therefore
According to formula (5) and law of propagation of errors, then along bridge to the middle error for becoming place value △ S
Middle error M through differentiated king-post along from bridge to change place value △ S△SReach 1.31mm, meet king-post along bridge to displacement
Value △ S measurement tolerances 3mm required precision.
Those skilled in the art can carry out various modifications and variations to the utility model embodiment, if these are changed
With modification within the scope of the utility model claims and its equivalent technologies, then these modifications and variations are also new in this practicality
Within the protection domain of type.
The prior art that the content not being described in detail in specification is known to the skilled person.
Claims (10)
- A kind of 1. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus, it is characterised in that：Including the first total powerstation (17), the second total powerstation (18) and two-way prism bracket device (1), the both ends of the two-way prism bracket device (1) are respectively arranged with the first prism (19), the second prism (20), the two-way prism bracket device (1) are arranged on king-post (13) wall, first total powerstation (17) and the second total powerstation (18) is respectively disposed on the first control stake (15), in the second control stake (16), the first control stake (15) the first control point A, the second control point B, the first control point A and second and in the second control stake (16) are respectively arranged with The center T1 of control point B and the first prism (19), the center T2 of the second prism (20) on same vertical plane, and with the bridge of cable-stayed bridge Center line (14) is parallel.
- 2. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 1, it is characterised in that：The two-way prism bracket Device (1) includes T-shaped component (2) and prism bar (8), and the first prism (19), the second prism (20) are respectively positioned at prism bar (8) Both ends.
- 3. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 2, it is characterised in that：The T-shaped component (2) with Prism bar (8) is be hinged.
- 4. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 3, it is characterised in that：On the prism bar (8) It is provided with long levelling tube (9).
- 5. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 4, it is characterised in that：The prism bar (8) Both sides are provided with vernier knob (10), and prism bar (8) is by vernier knob (10) leveling, during prism bar (8) leveling, fine setting Knob (10) is resisted against on T-shaped component (2).
- 6. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 2, it is characterised in that：T-shaped component (2) bag Include T-shaped component expansion link (3), the T-shaped component end plate (4) being connected with T-shaped component expansion link (3), T-shaped component expansion link (3) and T Type component end plate (4) is mutually perpendicular to arrange.
- 7. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 6, it is characterised in that：The T-shaped component stretches The end set of bar (3) has screw (12), and T-shaped component expansion link (3) is fixed on king-post (13) by screw (12).
- 8. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 6, it is characterised in that：The T-shaped component stretches Tightening knob (21) is provided with bar (3).
- 9. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 6, it is characterised in that：The T-shaped component end plate (4) free bearing (6) is provided with the middle part of, connecting hole (22), the T-shaped component end plate (4) are provided with the middle part of the prism bar (8) Be hinged by link bolt (7) and prism bar (8), the link bolt (7) passes through free bearing (6) and connecting hole (22).
- 10. Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus as claimed in claim 6, it is characterised in that：The T-shaped component stretches Bar (3) and T-shaped component end plate (4) are connected by fastening bolt (5), and the end set of the T-shaped component expansion link (3) has first Bolt hole (111), the second bolt hole (112) is provided with the middle part of the T-shaped component end plate (4), the fastening bolt (5) passes through First bolt hole (111) and the second bolt hole (112).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720927844.XU CN207032055U (en) | 2017-07-27 | 2017-07-27 | Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720927844.XU CN207032055U (en) | 2017-07-27 | 2017-07-27 | Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207032055U true CN207032055U (en) | 2018-02-23 |
Family
ID=61463017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720927844.XU Active CN207032055U (en) | 2017-07-27 | 2017-07-27 | Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207032055U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268446A (en) * | 2017-07-27 | 2017-10-20 | 中铁大桥局集团有限公司 | Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus and its measuring method |
| CN108680103A (en) * | 2018-05-02 | 2018-10-19 | 中铁大桥局集团有限公司 | A kind of cable-stayed bridge superelevation bridge tower pier anchor structure Rapid precision locating measurement method |
| CN108677739A (en) * | 2018-07-20 | 2018-10-19 | 长沙理工大学 | Temperature deformation correction method and system for cable-stayed bridge and suspension bridge cable tower construction process |
| CN113884056A (en) * | 2021-10-14 | 2022-01-04 | 中铁大桥局第九工程有限公司 | Measuring method for large-span continuous beam hanging basket cantilever cast-in-place beam |
-
2017
- 2017-07-27 CN CN201720927844.XU patent/CN207032055U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268446A (en) * | 2017-07-27 | 2017-10-20 | 中铁大桥局集团有限公司 | Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus and its measuring method |
| CN108680103A (en) * | 2018-05-02 | 2018-10-19 | 中铁大桥局集团有限公司 | A kind of cable-stayed bridge superelevation bridge tower pier anchor structure Rapid precision locating measurement method |
| CN108680103B (en) * | 2018-05-02 | 2020-06-09 | 中铁大桥局集团有限公司 | Rapid and precise positioning measurement method for cable-stayed bridge ultrahigh bridge tower pier anchoring structure |
| CN108677739A (en) * | 2018-07-20 | 2018-10-19 | 长沙理工大学 | Temperature deformation correction method and system for cable-stayed bridge and suspension bridge cable tower construction process |
| CN113884056A (en) * | 2021-10-14 | 2022-01-04 | 中铁大桥局第九工程有限公司 | Measuring method for large-span continuous beam hanging basket cantilever cast-in-place beam |
| CN113884056B (en) * | 2021-10-14 | 2024-05-14 | 中铁大桥局第九工程有限公司 | Method for measuring large-span continuous beam hanging basket cantilever cast-in-situ beam |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN207032055U (en) | Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus | |
| CN107268446A (en) | Tower Column of A Cable Stayed Bridge beam synchronous construction measurement apparatus and its measuring method | |
| CN205642376U (en) | Novel equipment stand is used in survey and drawing | |
| CN104132630A (en) | Long-term deflection monitoring system and method for long-span bridge | |
| CN206930286U (en) | Curved surface positioner | |
| CN207300237U (en) | The quick monitoring device of pier slope | |
| CN107130793A (en) | Form frame system with exactly vertical elevation and horizontal location function | |
| CN107034930A (en) | A kind of Portable Standards beam and its erection method | |
| Macdonald et al. | Wind loads on circular storage bins, silos and tanks. II. Effect of grouping | |
| CN106225761A (en) | A kind of device of the Three-direction deformation of Deformation Monitoring seam both sides agent structure | |
| CN107101613B (en) | A kind of measurement method of total station height of instrument | |
| CN110241735B (en) | Positioning and adjusting device and method for main tower cable guide pipe of cable-stayed bridge | |
| CN210507148U (en) | Positioning and adjusting device for main tower cable guide pipe of cable-stayed bridge | |
| CN103541545B (en) | The method that large-scale arcuate structure model sheetinstallat controls and vertical centering device thereof | |
| CN206205016U (en) | The device positioned using laser level | |
| CN214149209U (en) | Measuring device for cable-stayed bridge cable duct pipe positioning | |
| CN105698752B (en) | Suitable for the micrometric measurement absolute altitude method of combined type levelling staff | |
| CN207095554U (en) | A kind of Wavelike steel webplate speed surveys locator | |
| CN206804013U (en) | Shield tunnel measures mobile platform | |
| CN208026258U (en) | A kind of roadbed side slope slope detection device | |
| CN209673114U (en) | Engineering surveying instrument calibration device | |
| CN108645376B (en) | Telescopic leveling device and detection method thereof | |
| CN113124769A (en) | Method for measuring camber of large plate girder | |
| CN206376174U (en) | It is a kind of be used for detect two-shipper pave it is middle seam absolute standard height device | |
| CN206114275U (en) | Plane node atress capability test device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |