CN206037956U - Measurement device for shield tunnel segment connects deformation - Google Patents
Measurement device for shield tunnel segment connects deformation Download PDFInfo
- Publication number
- CN206037956U CN206037956U CN201621046969.3U CN201621046969U CN206037956U CN 206037956 U CN206037956 U CN 206037956U CN 201621046969 U CN201621046969 U CN 201621046969U CN 206037956 U CN206037956 U CN 206037956U
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- China
- Prior art keywords
- joint
- straight
- deformation
- generating laser
- shield tunnel
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- 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.)
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Abstract
The utility model discloses a measurement device for shield tunnel segment connects deformation. The device comprises parts such as anchor joint, dead lever, transfer line, the rotatory laser emitter of follow -up and screens. The utility model discloses the basic principle of device is enlargied the deformation that the section of jurisdiction connects with arranging member and laser emitter through the rational design to can realize connecting opening and each other not influence with wrong platform. According to the measuring device of design, opening of joint can make laser beam take place horizontal rotary drum, and the platform by mistake of joint can make laser beam take place vertical deflection, constitutes corresponding geometric figure before the laser beam change with after changing, can conveniently calculate opening of joint and wrong platform volume through the geometric similarity relation. Compare in existing measuring means, adopt the utility model discloses measuring device can be comprehensive measuring joint's deformation to improve the measurement accuracy that the butt joint is warp by a wide margin, solved current measuring means and be difficult to the difficult problem that accurate comprehensive measuring joint warp in actual engineering.
Description
Technical field
This utility model is related to engineering measuring technology field, more particularly to a kind of measurement of shield tunnel segment joint deformation
Device.
Background technology
Building up and putting into effect with a large amount of subways of China, used as the lifeline in city, Shield-bored tunnels characteristic
It is most important for city runs well with situation, also increasingly it is subject to the extensive concern of society.The lining cutting of Shield-bored tunnels
Typically formed by pipe sheet assembling, there are a large amount of joints is its most significant feature, and the presence of joint is for the mechanics of tunnel structure
Performance has significant effect, once joint occurs moderate finite deformation will produce stress concentration phenomenon, section of jurisdiction can be caused when serious to hold
Split, cause a series of harm such as percolating water, freeze injury and steel bar corrosion, serious prestige is constituted safely to traffic quality and human life
The side of body.Therefore, accurately comprehensively measure joint distortion significant for the safety of shield tunnel construction.
At present, many for the achievement in research of shield duct piece joint distortion both at home and abroad, the means of research are mainly adopted
Numerical simulation, and the requirement of engineering is not also much caught up with terms of measurement apparatus.The measuring equipment of domestic tunnel deformation is concentrated should
For the measurement of bulk deformation, the tunnel based on GPS location as disclosed in Chinese utility model publication number CN104807412A is whole
Body deformation monitoring device, realizes the automatization of measurement, real time implementation and can play the purpose of timely early warning, and accuracy in measurement is from 0.01
- 10 millimeters of millimeter.Device for detecting overall deformation of subway tunnel subway disclosed in Chinese utility model publication number CN201876245U
Tunnel device for detecting overall deformation is utilized using network sensor technology and image recognition technology first to operation tactics shape
Change carries out online real-time monitoring.And for the measurement of shield duct piece joint distortion, Chinese utility model publication number
Disclosed in CN102297666A, a kind of device of test shield lining segment joint distortion and its method of testing, parallel in joint
Two-layer sheet metal is set, the rubber tube of an embedded wire spring between steel plate, is arranged, rubber tube connects a burette, joint
During deformation, joint distortion is characterized by the SEA LEVEL VARIATION of burette.Although this apparatus and method are simple, actually can only
Characterize opening for joint.
In Practical Project, the measurement means of shield duct piece joint distortion are often carried out using crack gauge both at home and abroad, crack gauge
It is mainly used to the opening degree of measurement structure thing expansion joint or periphery fissure, i.e., can only equally measures opening for joint, and for joint
Faulting of slab ends is helpless, it is impossible to the deformation of reflection duct piece connector comprehensively.
Utility model content
For the deficiency of existing measurement means, technical problem underlying to be solved in the utility model is to provide one kind can
Accurately measurement shield tunnel opens the measurement apparatus with faulting of slab ends in work progress and external load effect lower contact comprehensively.
In order to realize above-mentioned technical purpose, the technical solution of the utility model is,
A kind of measurement apparatus of shield tunnel segment joint deformation, it is including two straight-bars, generating laser, optical screens, described
Two straight-bars be separately fixed at two pieces of adjacent sections of jurisdiction joint area both sides, be connected with laser between two straight-bars
Emitter, is movably connected in the middle part of described generating laser on wherein one straight-bar, and the tail end activity of generating laser is even
It is connected on another straight-bar, described optical screen is fixed on by fix bar on wherein one straight-bar and generating laser is launched
Laser be irradiated on optical screen.
A kind of measurement apparatus of described shield tunnel segment joint deformation, described generating laser pass through flexural pivot
To be movably connected with two straight-bars.
A kind of measurement apparatus of described shield tunnel segment joint deformation, the tail end of described generating laser are provided with recessed
Groove, is provided with slide block in groove, slide block is articulated in two straight-bars.
A kind of measuring method of shield tunnel segment joint deformation, comprises the following steps：
Step 1, arranges two straight-bars in the both sides of the joint area of two pieces of adjacent sections of jurisdiction, and activity between two straight-bars connects
Generating laser is connect, is movably connected in the middle part of described generating laser on wherein one straight-bar, the tail end of generating laser
Be articulated on another straight-bar, on the direction of illumination of generating laser arrange an optical screen, optical screen by fix bar come
It is fixed on wherein one straight-bar；
Step 2, adjusts two straight-bars, generating laser and optical screens, makes the laser launched by generating laser be radiated at light
On screen and record this initial position；
Step 3, when joint deforms, is radiated at the distance offset on optical screen, and the length of fix bar according to laser
Degree, calculates the deflection of joint using triangle geometry similarity relation.
A kind of measuring method of described shield tunnel segment joint deformation, in described step 1, described Laser emission
Device is movably connected with two straight-bars by flexural pivot.
A kind of measuring method of described shield tunnel segment joint deformation, in described step 1, described Laser emission
The tail end of device is provided with groove, is provided with slide block in groove, and slide block is articulated in two straight-bars.
A kind of measuring method of described shield tunnel segment joint deformation, in described step 3, the deflection of joint leads to
Cross below equation calculating：
When joint occurs faulting of slab ends, faulting of slab ends amount m is：
Wherein, AF is the distance between two straight-bars and generating laser junction point, and when oD is faulting of slab ends, on optical screen, laser is inclined
Shifting amount, oA are the distance that generating laser tail end junction point and laser irradiate initial position；
When joint opens, joint open n is：
Wherein, RM is the thickness for connecting the straight-bar length in the middle part of generating laser plus section of jurisdiction, and MN is connection Laser emission
The length of device tail end straight-bar, AF are the distance between two straight-bars and generating laser junction point, and oC is sharp on optical screen when opening
Light shift amount, oA are the distance that generating laser tail end junction point and laser irradiate initial position.
The more existing duct piece connector measurement means of this utility model, have an advantage in that：
(1) deformation of joint can be amplified by the measurement apparatus, then go out opening for joint by geometrical relationship inverse
Open and faulting of slab ends amount, therefore, can comprehensively measure the deformation of joint using this utility model measurement apparatus, and greatly improve it is right
The certainty of measurement of joint distortion.
(2) the characteristics of device is maximum is will can to open to separate with faulting of slab ends, be reflected directly in luminous point in optical screen horizontal stroke,
Vertical coordinate, by measuring the coordinate figure of luminous point, inverse goes out to open value and faulting of slab ends value, dramatically improves joint distortion measurement
Convenience and accuracy, solve the difficult problem that direct measurement means are difficult to accurately comprehensively measurement joint distortion.
In sum, this utility model provides a kind of indirect survey that can accurately measure shield tunnel segment joint deformation
Amount device, the measurement device principle are simple, easy to operate, promote the use of in being suitable for engineering, for improving shield tunnel project
Security monitoring in work progress and tunnel service phase is significant.
Description of the drawings
Fig. 1 is this utility model measurement apparatus entirety and key position schematic perspective view；
Fig. 2 is that this utility model measurement apparatus anchor joint profile；
Fig. 3 is this utility model measurement apparatus slave laser emitter profile；
Fig. 4 is this utility model measurement apparatus optical path change geometrical relationship figure；
Wherein：1 is anchoring joint；2 is wherein one straight-bar；3 is another straight-bar；4 is articulated joint；5 is Laser emission
Device；6 is the flexural pivot of generating laser tail end；7 is the flexural pivot in the middle part of generating laser；8 is motion bar；9 is light path；
10 is optical screen；11 is optical screen fix bar；12 is anchorage head；13 is anchorage nut.
Specific embodiment
Below in conjunction with the accompanying drawings embodiment of the present utility model is further described：
As shown in drawings, this utility model device includes anchoring joint 1, two straight-bars, slave laser emitters 5, optical screen
The part composition such as 10 and optical screen fix bar 11.Two straight-bars are separately fixed at the both sides of the joint area of two pieces of adjacent sections of jurisdiction,
Generating laser is connected between two straight-bars, is movably connected in the middle part of generating laser on wherein one straight-bar, swashed
The tail end of optical transmitting set is articulated on another straight-bar, and optical screen is fixed on by fix bar on wherein one straight-bar and is swashed
The laser launched by optical transmitting set is irradiated on optical screen.Generating laser is movably connected with two directly by flexural pivot
Bar.The tail end of generating laser is provided with groove, is provided with slide block in groove, and slide block is articulated in two straight-bars.
The specific implementing procedure of measurement apparatus is：
(1) device normalization：Before device is installed and used, debugging demarcation should be carried out to measurement apparatus, it is ensured that light path can be penetrated
At optical screen center；
(2) device is installed：Described anchoring joint 1 is symmetrically bored in joint both sides after point position is determined
Hole is installed, and strictly should control to anchor the direction of joint during arrangement, it is ensured that install fix bar 2 and drive link 3 is not sent out in duct piece connector
Before the shape that changes along shield tunnel radial direction.
(3) measurement and record：As shown in Figures 1 and 2, fix bar 2 and drive link 3 and other linkage parts are installed
On anchoring joint, if joint does not deform, laser optical path should be penetrated at optical screen center；If opened during pipe sheet assembling or
Faulting of slab ends, then record the horizontal range and vertical distance at spot distance optical screen center, and this is the initial deformation amount of joint.
(4) measurement result is arranged and analysis：Required according to measurement frequency, repeat at periodic or other desired the work of the 3rd step, record light
Point apart from the horizontal range at optical screen center, vertical distance, construction stage and measure and environmental variable, and by the level for measuring away from
Joint open (specification feasible value 3mm) and faulting of slab ends amount (specification feasible value are converted into respectively according to geometrical relationship from vertical distance
15mm), measurement result, the influence factor of analyzing adapter deformation and influence degree is arranged, is provided for successive projects design and construction
Data is referred to.
(5) geometry conversion relation explanation：When joint is not deformed, light path is Ao；During joint faulting of slab ends, drive link 3 passes through ball pivot
2. joint drives generating laser vertically to rotate, and optical routing Ao is changed into AC, and faulting of slab ends amount is defined as m, sees Fig. 4-(a) and Fig. 4-(c),
Can be obtained according to triangle geometry similarity relation
When joint opens, 2. drive link 3 drives generating laser to horizontally rotate by flexural pivot, and optical routing Ao is changed into
AD, is shown in Fig. 4-(a) and Fig. 4-(c), and joint open is defined as n, can be obtained according to triangle geometry similarity relation：
Joint is opened with faulting of slab ends while when occurring, optical routing Ao is changed into AB, due to opening and faulting of slab ends not shadow mutually for joint
Ring, the calculating of joint open and faulting of slab ends amount is same as described above.In above-mentioned several formulas, oC and oD is directly measured quantities；AF is ball pivot
The joint 1. centre of sphere and flexural pivot distance 2.；OA is the distance at the flexural pivot 1. centre of sphere and optical screen center；MN is drive link 3
Length；RM is the thickness of the length plus section of jurisdiction of drive link 3.
This utility model is not limited by above-mentioned embodiment, other any real without departing from spirit of the present utility model
The modification made under matter and principle, modification, replacement, combination, simplify, should be equivalent substitute mode, be included in this practicality newly
In the legal protection category of type.
Claims (3)
1. measurement apparatus of a kind of shield tunnel segment joint deformation, it is characterised in that including two straight-bars, generating laser,
Optical screen, two described straight-bars are separately fixed at the both sides of the joint area of two pieces of adjacent sections of jurisdiction, activity between two straight-bars
Generating laser is connected with, is movably connected in the middle part of described generating laser on wherein one straight-bar, generating laser
Tail end is articulated on another straight-bar, and described optical screen is fixed on by fix bar on wherein one straight-bar and laser is sent out
The laser launched by emitter is irradiated on optical screen.
2. the measurement apparatus that a kind of shield tunnel segment joint according to claim 1 deforms, it is characterised in that described
Generating laser is movably connected with two straight-bars by flexural pivot.
3. the measurement apparatus that a kind of shield tunnel segment joint according to claim 1 deforms, it is characterised in that described
The tail end of generating laser is provided with groove, is provided with slide block in groove, and slide block is articulated in two straight-bars.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621029460 | 2016-08-31 | ||
| CN2016210294608 | 2016-08-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206037956U true CN206037956U (en) | 2017-03-22 |
Family
ID=58299806
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621046969.3U Expired - Fee Related CN206037956U (en) | 2016-08-31 | 2016-09-09 | Measurement device for shield tunnel segment connects deformation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206037956U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197306A (en) * | 2016-08-31 | 2016-12-07 | 中南大学 | The measurement apparatus of a kind of shield tunnel segment joint deformation and method |
-
2016
- 2016-09-09 CN CN201621046969.3U patent/CN206037956U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106197306A (en) * | 2016-08-31 | 2016-12-07 | 中南大学 | The measurement apparatus of a kind of shield tunnel segment joint deformation and method |
| CN106197306B (en) * | 2016-08-31 | 2019-07-02 | 中南大学 | A kind of measuring device and method of shield tunnel segment joint deformation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170322 Termination date: 20210909 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |