CN207228180U - A kind of horizontal displacement measuring system based on collimation line method - Google Patents
A kind of horizontal displacement measuring system based on collimation line method Download PDFInfo
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- CN207228180U CN207228180U CN201721039985.4U CN201721039985U CN207228180U CN 207228180 U CN207228180 U CN 207228180U CN 201721039985 U CN201721039985 U CN 201721039985U CN 207228180 U CN207228180 U CN 207228180U
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- horizontal displacement
- foot rest
- reading
- rest base
- measuring system
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Abstract
It the utility model is related to a kind of horizontal displacement measuring system based on collimation line method, which includes being separately positioned on the first foot rest base of foundation pit both ends horizontal displacement measurement datum and the second foot rest base, the theodolite that is arranged on the first foot rest base or total powerstation, the reading that is arranged on the second foot rest base and is used cooperatively with theodolite or total powerstation observe board.Compared with prior art, the utility model overall structure is simple, and economic and practical is good, easy to implement, and observation is clear, calculates simply, can greatly simplify the step of horizontal displacement measures, and improves measurement work efficiency, high certainty of measurement, has good application prospect.
Description
Technical field
The utility model belongs to measurement technology field, is related to a kind of horizontal displacement measuring system based on collimation line method.
Background technology
With the needs of Process of Urbanization Construction, the engineering such as subway, skyscraper is built energetically, and the construction of these engineerings
It is required for carrying out excavation of foundation pit in densely populated urban district mostly.In Deep Excavation, the effect that crater wall is stressed will
Larger displacement deformation is produced into hole, hidden danger is caused to the safety of base pit engineering and periphery construction of structures, therefore to base
The safety monitoring of hole period of state is just particularly important.
Surrounding is limited by conditions such as narrow and small, the construction material stackings in construction site at the top of foundation pit, how rationally to use horizontal position
Move the problem that monitoring method is always each monitoring unit.
Existing foundation pit top horizontal displacement monitoring method has collimation line method, minor angle method and method of polar coordinates etc..Its is medium and small
Preset angle configuration need to repeatedly adjust total powerstation horizontal rotation, and angle and distance needed for measurement, then try to achieve mesh according to trigonometric function conversion
The displacement of punctuate.Method of polar coordinates need to measure horizontal angle and distance at the same time to obtain coordinate value, according to the coordinate difference of a direction
Displacement is calculated in value, this method is complicated, and angle measurement, range error exist at the same time, so measurement accuracy is not high.Small angle
Degree method and method of polar coordinates are required for measuring using high precision total station, just can ensure that monitoring accuracy, the valency of high precision total station
Lattice cost is higher.
Collimation line method is that the sight that theodolite or total powerstation provide using between two fixing points is used as datum line, measurement monitoring point
To the distance of datum line, the monitoring method of deviant is determined.The advantages of collimation line method is that method is simple, direct, and cost is relatively low, one
As can complete to measure using theodolite and small steel ruler, and shortcoming to be due to small steel ruler must be positioned on ground monitoring point and
Scale target is smaller, foundation pit periphery slightly heap thing or distant just influence observation, so how to solve monitoring point sights target
Sharpness problems be ensure collimation line method monitoring accuracy emphasis.
Utility model content
The purpose of this utility model be exactly in order to overcome the problems of the above-mentioned prior art and provide it is a kind of it is easy to implement,
Observation is clear, calculates simple, of low cost, the horizontal displacement measuring system based on collimation line method of high certainty of measurement.
The purpose of this utility model can be achieved through the following technical solutions：
A kind of horizontal displacement measuring system based on collimation line method, the system include being separately positioned on foundation pit both ends horizontal position
The first foot rest base and the second foot rest base of shift measurement datum, the theodolite being arranged on the first foot rest base or whole station
Instrument, the reading for being arranged on the second foot rest base and being used cooperatively with theodolite or total powerstation observe board.
Connecting rod is vertically equipped with second foot rest base, the reading observes board and is fixed on connecting rod
On.
The second each monitoring point of foot rest base centering.
The reading observes board and is equipped with levelling staff score line.
The reading observes board and observes board for aluminium alloy reading.
The theodolite or the enlargement ratio of total powerstation are 30 times.
The theodolite or total powerstation are using instruments more than 2 " levels.
In practical application, using the theodolite or total powerstation that are arranged on survey station, the telescope of theodolite or total powerstation
Enlargement ratio is generally identical with spirit level, is also 30 times, and the delineation on board is observed with the vertical Si Laika reading readings of telescope crosshair
Reading, just, reversing face respectively survey one time, rereading takes average, and it is this displacement that this reading, which subtracts last time reading, this reading subtracts
Initial reading is accumulative displacement amount, and specific formula for calculation is as follows：
⊿di=Di-Di-1；
⊿dj=Di-D0；
D0-- initial reading, Di-- this reading, Di-1-- previous reading , ⊿ di-- this displacement , ⊿ dj-- accumulative position
Shifting amount.
Compared with prior art, the utility model has the characteristics that：
1) the utility model horizontal displacement measuring system can ensure the measurement accuracy of the monitoring point within 100m ± 1~
Within 3mm, this, which is sufficient to detect at the top of foundation pit, is entirely descending the horizontal displacement deformation tendency in construction process, reaches
To the purpose of monitoring, and for the monitoring point beyond 100m, can on same datum line cultellation, survey station is moved forward, in use
State the shift value of the monitoring point beyond same monitoring method measurement 100m；
2) overall structure is simple, and economic and practical is good, easy to implement, and observation is clear, calculates simply, can greatly simplify level
The step of displacement measurement, improve measurement work efficiency, high certainty of measurement, has good application prospect.
Brief description of the drawings
Fig. 1 is the utility model structure diagram；
Fig. 2 is the schematic diagram that reading observes levelling staff score line on board in the utility model；
Description of symbols in figure：
1-the first foot rest base, the 2-the second foot rest base, 3-theodolite or total powerstation, 4-reading observe board, 5-level
Scale score line.
Embodiment
The utility model is described in detail with specific embodiment below in conjunction with the accompanying drawings.
Embodiment：
As shown in Figure 1, a kind of horizontal displacement measuring system based on collimation line method, which includes being separately positioned on foundation pit
The first foot rest base 1 and the second foot rest base 2 of both ends horizontal displacement measurement datum, be arranged on the first foot rest base 1
Theodolite or total powerstation 3, the reading that is arranged on the second foot rest base 2 and is used cooperatively with theodolite or total powerstation 3 observe board
4。
Wherein, connecting rod is vertically equipped with the second foot rest base 2, reading is observed board 4 and is fixed in connecting rod.Second
The each monitoring point of 2 centering of foot rest base.Reading observes board 4 and is equipped with levelling staff score line, as shown in Figure 2.It is aluminium that reading, which observes board 4,
Alloy reading observes board.The enlargement ratio of theodolite or total powerstation 3 is 30 times.Theodolite or total powerstation 3 are using instrument more than 2 " levels
Device.
In practical application, using the theodolite or total powerstation 3 being arranged on survey station, theodolite or total powerstation 3 are looked in the distance
Mirror enlargement ratio is generally identical with spirit level, is also 30 times, and the quarter on board 4 is observed with the vertical Si Laika reading readings of telescope crosshair
Draw reading, just, reversing face respectively survey one time, rereading takes average, and it is this displacement that this reading, which subtracts last time reading, this reading
It is accumulative displacement amount to subtract initial reading, and specific formula for calculation is as follows：
⊿di=Di-Di-1；
⊿dj=Di-D0；
D0-- initial reading, Di-- this reading, Di-1-- previous reading , ⊿ di-- this displacement , ⊿ dj-- accumulative position
Shifting amount.
The present embodiment horizontal displacement measuring system can ensure the measurement accuracy of the monitoring point within 100m in ± 1~3mm
Within, this, which is sufficient to detect at the top of foundation pit, is entirely descending the horizontal displacement deformation tendency in construction process, reaches
The purpose of monitoring, and for the monitoring point beyond 100m, can on same datum line cultellation, survey station is moved forward, use is above-mentioned
The shift value of monitoring point beyond same monitoring method measurement 100m.
Claims (6)
1. a kind of horizontal displacement measuring system based on collimation line method, it is characterised in that the system includes being separately positioned on foundation pit
The first foot rest base and the second foot rest base of both ends horizontal displacement measurement datum, the warp being arranged on the first foot rest base
Latitude instrument or total powerstation, the reading for being arranged on the second foot rest base and being used cooperatively with theodolite or total powerstation observe board.
2. a kind of horizontal displacement measuring system based on collimation line method according to claim 1, it is characterised in that described
Connecting rod is vertically equipped with second foot rest base, the reading is observed board and is fixed in connecting rod.
3. a kind of horizontal displacement measuring system based on collimation line method according to claim 2, it is characterised in that described
The second each monitoring point of foot rest base centering.
4. a kind of horizontal displacement measuring system based on collimation line method according to claim 2, it is characterised in that described
Reading observes board and is equipped with levelling staff score line.
5. a kind of horizontal displacement measuring system based on collimation line method according to claim 4, it is characterised in that described
Reading observes board and observes board for aluminium alloy reading.
6. a kind of horizontal displacement measuring system based on collimation line method according to claim 1, it is characterised in that described
The enlargement ratio of theodolite or total powerstation is 30 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721039985.4U CN207228180U (en) | 2017-08-18 | 2017-08-18 | A kind of horizontal displacement measuring system based on collimation line method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721039985.4U CN207228180U (en) | 2017-08-18 | 2017-08-18 | A kind of horizontal displacement measuring system based on collimation line method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207228180U true CN207228180U (en) | 2018-04-13 |
Family
ID=61858330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721039985.4U Expired - Fee Related CN207228180U (en) | 2017-08-18 | 2017-08-18 | A kind of horizontal displacement measuring system based on collimation line method |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556539A (en) * | 2018-12-29 | 2019-04-02 | 上海山南勘测设计有限公司 | A kind of heavy grade tunnel axis detection method based on shield duct piece measurement |
-
2017
- 2017-08-18 CN CN201721039985.4U patent/CN207228180U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109556539A (en) * | 2018-12-29 | 2019-04-02 | 上海山南勘测设计有限公司 | A kind of heavy grade tunnel axis detection method based on shield duct piece measurement |
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Legal Events
| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180413 Termination date: 20190818 |