CN205857254U - Immersed tube tunnel basis fills sandpipe bottom pressure monitoring system - Google Patents
Immersed tube tunnel basis fills sandpipe bottom pressure monitoring system Download PDFInfo
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- CN205857254U CN205857254U CN201620420878.5U CN201620420878U CN205857254U CN 205857254 U CN205857254 U CN 205857254U CN 201620420878 U CN201620420878 U CN 201620420878U CN 205857254 U CN205857254 U CN 205857254U
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- data
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- analysis module
- pressure cell
- sand
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Abstract
This utility model provides a kind of immersed tube tunnel basis and fills sandpipe bottom pressure monitoring system, including several pressure cells, multi-Channels Data Acquisition, data process&analysis module, the real time data gathered is transmitted to data process&analysis module by described pressure cell by multi-Channels Data Acquisition；Described pressure cell is embedded in position at the bottom of pipe, for according to the force value at the bottom of the frequency acquisition collection tube of data process&analysis module settings；Described multi-Channels Data Acquisition matches with pressure cell, transmits to data process&analysis module with cable or radio transmitting device for the real-time pressure data gathered by pressure cell；Described data process&analysis module, for arranging the frequency acquisition of pressure cell, and is analyzed real-time pressure value at the bottom of the pipe received processing, represents the filling sand state of each collection point.This utility model can be monitored sand in real time and be amassed formation and the variable condition thereof of dish, and simple in construction, and easy to use, monitoring result is relatively reliable.
Description
Technical field
This utility model relates to immersed tube tunnel technical field, in particular it relates to a kind of immersed tube tunnel basis fills sandpipe base pressure
Power monitoring system.
Background technology
Sand replacement method has become one of main construction method of immersed tube tunnel based process.Owing to basis fills sand under water in fact
Executing, the quality on sand basis is directly connected to the construction quality of immersed tube tunnel and builds up the safe operation in rear tunnel, therefore, to immersed tube
Tunnel basis filling sand construction is monitored in real time and is seemed the most necessary.
At present, immersed tube tunnel basis fills the monitoring of sand construction, conventional following several method:
(1) sand amount controls
According to the filling sand amount of pipeline section Bottom Altitude estimation pipeline section after the foundation trench degree of depth and sinking.Due to the impact of current, one
Sub-sand can be taken away by current, and this part sand amount is difficult to estimation；Additionally, the diversity of foundation trench shape is to the control of sand amount also
Considerable influence can be produced.Therefore control sand filling effect unreliable to fill sand amount as standard.
(2) outlet pressure monitoring
Sand pump outlet pressure is monitored, when force value exceedes a certain limit value (such as 0.1MPa), it is believed that pipe during filling sand
Section is in critical rises state.Owing to sand pump outlet pressure is limited near filling sand hole, and sand is amassed whether dish touches pipe
Bottom Duan, this index can not provide reasonably judgement.
(3) displacement measurement
In pipe, measure the change of pipeline section absolute altitude, think that when pipeline section reaches certain amount of rising filling sand circularity reaches to want
Ask.Owing to sand is in space and non-uniform Distribution, the change of pipeline section absolute altitude cannot reflect sand between foundation trench and pipeline section bottom surface all sidedly
The full level of dish.
(4) diving is felt
By water under diver feel emery disc formed and around sand hole fill sand situation.Obviously, diver only feels scope
It is confined to pipeline section surrounding, helpless for the position in the middle of pipeline section.
Due to the limitation of said method, it is faced with in filling sand construction and cannot monitor sand in real time and amass formation and the change thereof of dish
Change state, thus be easily caused filling sand hole plug-hole and basis not sufficiently filled, it is impossible to for stop fill sand provide accordingly judge mark
Problems such as accurate (foundations).
Utility model content
For defect of the prior art, the purpose of this utility model is to provide a kind of immersed tube tunnel basis and fills sandpipe base pressure
Power monitoring system and method.
The immersed tube tunnel basis provided according to this utility model fills sandpipe bottom pressure monitoring system, including several pressure
Box, multi-Channels Data Acquisition, data process&analysis module, the real time data gathered is passed through manifold number of channels by described pressure cell
Transmit to data process&analysis module according to Acquisition Instrument；
Described pressure cell is embedded in position at the bottom of pipe, for the frequency acquisition collection according to data process&analysis module settings
Force value at the bottom of pipe；
Described multi-Channels Data Acquisition matches with pressure cell, and the real-time pressure data being used for gathering pressure cell is with line
Cable or radio transmitting device transmit to data process&analysis module；
Described data process&analysis module, for controlling the frequency acquisition of pressure cell, and to real-time at the bottom of the pipe received
Force value is analyzed processing, and represents the filling sand state of each collection point.
Preferably, described pressure cell uses soil pressure cell, specifically, uses type vibration wire soil pressure cell.
Preferably, described multi-Channels Data Acquisition is type vibration wire data collecting instrument, described type vibration wire data collecting instrument energy
Enough carry out data acquisition according to the frequency acquisition set, and be provided with data storage areas.
Preferably, described data process&analysis module can control the acquisition mode of pressure cell, acquisition time interval, and
Monitor the filling sand state of each collection point in real time.
Preferably, described data process&analysis module includes: the control dress on computer, single-chip microcomputer and smart machine
Any one device in putting.
Fill sandpipe bottom pressure monitoring method according to the immersed tube tunnel basis that this utility model provides, comprise the steps:
Pipe bottom pressure acquisition step: by pressure cell according to the force value at the bottom of the frequency acquisition collection tube set；
Data transmission step: the official's base pressure force value gathered by pressure cell passes through multi-Channels Data Acquisition with cable or wireless
Transmitting device transmits to data process&analysis module；
Data processing step: control the frequency acquisition of pressure cell, and real-time pressure value at the bottom of the pipe received is analyzed
Process, represent the filling sand state of each collection point.
Compared with prior art, this utility model has a following beneficial effect:
1, this utility model is concentric radial equidistantly to bury pressure cell underground according to filling sand hole position at tube coupling base plate, presets
Data acquiring frequency, is gathered data by multi-Channels Data Acquisition and is sent to computer, by Correlation method for data processing and analysis
Software is monitored in real time and represents pipe bottom pressure situation of change in filling sand work progress, and then determines that sand amasss dish disperse state, for base
Plinth fills the enforcement of sand construction and provides scientific basis.
2, comparing traditional monitoring method, this utility model can be monitored sand in real time and be amassed formation and the variable condition thereof of dish,
And simple in construction, easy to use, monitoring result is relatively reliable.
Accompanying drawing explanation
The detailed description with reference to the following drawings, non-limiting example made by reading, other spy of the present utility model
Levy, purpose and advantage will become more apparent upon:
Fig. 1 is system architecture diagram of the present utility model；
Fig. 2 is that this utility model fills sand hole and pressure cell horizontal layout schematic diagram；
Fig. 3 is pressure cell pre-buried structure schematic cross-sectional view in this utility model；
Fig. 4 is the filling sand pressure monitoring procedure chart of this utility model embodiment；
Fig. 5 is that this utility model embodiment compares figure by observation window observation with pressure cell monitoring result.
In figure:
21-fills sand hole；
22-pressure cell；
33-base plate；
34-sleeve pipe；
35-cable.
Detailed description of the invention
Below in conjunction with specific embodiment, this utility model is described in detail.Following example will assist in this area
Technical staff is further appreciated by this utility model, but limits this utility model the most in any form.It should be pointed out that, to ability
For the those of ordinary skill in territory, without departing from the concept of the premise utility, it is also possible to make some changes and improvements.
These broadly fall into protection domain of the present utility model.
The immersed tube tunnel basis provided according to this utility model fills sandpipe bottom pressure monitoring system, is embedded in the pressure at the bottom of pipe
Box, multi-Channels Data Acquisition, computer and corresponding data process&analysis software.
Described pressure cell is to be embedded in the high accuracy soil pressure cell bottom pipeline section；
Described multi-Channels Data Acquisition is the device supporting with soil pressure cell, is connected with pressure cell by cable, and leads to
Cross cable or radio transmitting device and the data of collection are sent to computer；
Described computer is each soil pressure cell setting data frequency acquisition by data acquisition software, and to gathered number
According to monitoring in real time；
Described data process&analysis software data gathered to each pressure cell are analyzed in real time, show each sampling site
Fill sand state.
Described pressure cell uses high accuracy soil pressure cell, usually type vibration wire soil pressure cell, is that a kind of embedded type pressure passes
Sensor, its range is typically smaller than 0.2MPa, and resolution is higher than 0.1% (F S).
Described multi-Channels Data Acquisition is type vibration wire data collecting instrument, and Acquisition Instrument can be adopted automatically by predetermined frequency acquisition
Collection, and there is storage function.
Described computer controls data acquisition modes by soil pressure cell software kit, acquisition time is spaced and monitoring data
Situation.
Described data process&analysis software has monitoring and the examination function of data, and by the pressure pair of each sampling site
Fill sand situation and make judge.
Described pressure cell is concentric radial equidistantly bury underground according to filling sand hole position at tube coupling base plate, and its spacing can basis
Accuracy in measurement also combines practical situation and determines (generally can set the spacing of 1～2m)；Each pressure cell is by cable and manifold number of channels
Connect according to Acquisition Instrument, apply the acquisition software preset data frequency acquisition supporting with pressure cell；Multi-Channels Data Acquisition will be adopted
Collection data are sent to computer by cable or wireless transmission method, utilize the Correlation method for data processing in computer and analysis software
Pipe bottom pressure situation of change during reflection fills sand work progress in real time；Determine that sand amasss the pressure door of dish extension by filling sand mo(u)ld draft experiment
Threshold value, and then represent the process filling sand at the bottom of pipe in real time, determine that sand amasss dish disperse state, provide theory to depend on for filling the enforcement of sand construction
According to.
Specifically, as it is shown in figure 1, immersed tube tunnel basis fills sandpipe bottom pressure monitoring system by several pressure cells, manifold
Track data Acquisition Instrument and computer and data analysis module form.
As in figure 2 it is shown, centered by filling sand hole 21, pressure cell 22 is embedded in pipeline section symmetrically by the most radial
Bottom.
As it is shown on figure 3, pressure cell 22 is fixed on pattern board 33, its cable 35 is protected by sleeve pipe 34 and is made waterproof place
Reason.
The specific embodiment of technical solutions of the utility model:
The observed result of model test is filled as enforcement of the present utility model by large-scale immersed tube tunnel equal proportion basis
Example.Certain large-scale immersed tube tunnel equal proportion basis fills model test platform and includes: a size of 52m × 30m × 2m large pool, with
And bottom has 4 armored concrete knots filling sand hole with all round closure and upper opening, a size of 25m × 23.5m × 0.3m
Structure model.This pattern board along each filling sand hole radially 45 ° radial equidistantly bury pressure cell in concentric underground (pressure cell be vibratory string
Formula soil pressure cell, its range is 0.2MPa, resolution 0.1% (F S)), pressure cell with fill sand hole centre distance be respectively 2m,
4m, 6m and 8m, with the change of Bottom Pressure during monitoring filling sand.Set at equal intervals along each filling sand hole radial direction 90 ° at pattern board
Set high strong organic glass observation window (0.6m × 0.25m), with emery disc full level and extension radius etc. during observation filling sand.Press
Design emery disc dilation angle 7.5m implements to fill sand operation.During filling sand, pressure cell is by the interval sample frequency pair of 15 minutes
Bottom Pressure is monitored.
Fig. 4 is to fill to be respectively 2m, 4m, 6m and 8m at Bottom Pressure with the change of filling sand time away from filling the sand hole hole heart during sand
Change graph of a relation.Fig. 4 presents similar Changing Pattern away from the Bottom Pressure filling sand hole hole heart different distance during showing to fill sand, with
The lasting Bottom Pressure filling the sand time is that undaform rises and falls and is gradually increased, the fluctuating situation of Bottom Pressure and sand amass dish formed with
Dissipation situation is corresponding.Away from fill sand hole near pressure change frequently and pressure the most greatly, distance filling sand hole pressure remotely exist
Fill sand early stage insensitive, the most progressively make a difference.
Fig. 5 be the emery disc dilation angle observed by observation window with away from filling sand hole hole heart different distance pressure cell monitoring result
Comparison figure.By to observation data analysis combine Fig. 5 can shake out long-pending dish extension pressure door threshold value be 9.56kPa.Based on this
Pressure door threshold value can follow the tracks of the process filling sand at the bottom of pipe, grasps sand and amasss dish disperse state.
This utility model uses the method that pre-buried pressure cell monitoring immersed tube tunnel basis fills sand construction, can not only monitor institute
The pressure in region, place, and can reflect that sand amasss formation and the dissipation situation of dish, there is convenience and practical.
Above specific embodiment of the utility model is described.It is to be appreciated that this utility model not office
Being limited to above-mentioned particular implementation, those skilled in the art can make a variety of changes within the scope of the claims or revise,
This has no effect on flesh and blood of the present utility model.Spy in the case of not conflicting, in embodiments herein and embodiment
Levy and can arbitrarily be mutually combined.
Claims (4)
1. an immersed tube tunnel basis fills sandpipe bottom pressure monitoring system, it is characterised in that include several pressure cells, multichannel
Data collecting instrument, data process&analysis module, the real time data of collection is passed through multi-Channels Data Acquisition by described pressure cell
Transmission is to data process&analysis module；
Described pressure cell is embedded in position at the bottom of pipe, at the bottom of according to the frequency acquisition collection tube of data process&analysis module settings
Force value；
Described multi-Channels Data Acquisition matches with pressure cell, for real-time pressure data that pressure cell is gathered with cable or
Radio transmitting device transmits to data process&analysis module；
Described data process&analysis module, for arranging the frequency acquisition of pressure cell, and to real-time pressure at the bottom of the pipe received
Value is analyzed processing, and represents the filling sand state of each collection point.
Immersed tube tunnel basis the most according to claim 1 fills sandpipe bottom pressure monitoring system, it is characterised in that described pressure
Box uses soil pressure cell, specifically, uses type vibration wire soil pressure cell.
Immersed tube tunnel basis the most according to claim 1 fills sandpipe bottom pressure monitoring system, it is characterised in that described manifold
Track data Acquisition Instrument is type vibration wire data collecting instrument, and described type vibration wire data collecting instrument can be carried out according to the frequency acquisition set
Data acquisition, and it is provided with data storage areas.
Immersed tube tunnel basis the most according to claim 1 fills sandpipe bottom pressure monitoring system, it is characterised in that described data
Process and include with analysis module: any one device in computer, single-chip microcomputer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620420878.5U CN205857254U (en) | 2016-05-10 | 2016-05-10 | Immersed tube tunnel basis fills sandpipe bottom pressure monitoring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620420878.5U CN205857254U (en) | 2016-05-10 | 2016-05-10 | Immersed tube tunnel basis fills sandpipe bottom pressure monitoring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205857254U true CN205857254U (en) | 2017-01-04 |
Family
ID=57642668
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620420878.5U Expired - Fee Related CN205857254U (en) | 2016-05-10 | 2016-05-10 | Immersed tube tunnel basis fills sandpipe bottom pressure monitoring system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205857254U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862940A (en) * | 2016-05-10 | 2016-08-17 | 上海交通大学 | Pipe bottom pressure monitoring system and method for sand filling of foundation of immersed tube tunnel |
| CN110499782A (en) * | 2019-09-04 | 2019-11-26 | 中铁第六勘察设计院集团有限公司 | Immersed tube tunnel basis fills sand Special engineering ship |
-
2016
- 2016-05-10 CN CN201620420878.5U patent/CN205857254U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105862940A (en) * | 2016-05-10 | 2016-08-17 | 上海交通大学 | Pipe bottom pressure monitoring system and method for sand filling of foundation of immersed tube tunnel |
| CN105862940B (en) * | 2016-05-10 | 2018-10-23 | 上海交通大学 | Immersed tube tunnel basis fills sandpipe bottom pressure and monitors system and method |
| CN110499782A (en) * | 2019-09-04 | 2019-11-26 | 中铁第六勘察设计院集团有限公司 | Immersed tube tunnel basis fills sand Special engineering ship |
| CN110499782B (en) * | 2019-09-04 | 2024-03-26 | 中铁第六勘察设计院集团有限公司 | Engineering ship special for sand filling of immersed tunnel foundation |
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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: 20170104 Termination date: 20170510 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |