CN105821912B - Detect method, intelligent foundation ditch support meanss and the intelligent foundation pit support system of foundation ditch axial force of the supports - Google Patents
Detect method, intelligent foundation ditch support meanss and the intelligent foundation pit support system of foundation ditch axial force of the supports Download PDFInfo
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- CN105821912B CN105821912B CN201610202249.XA CN201610202249A CN105821912B CN 105821912 B CN105821912 B CN 105821912B CN 201610202249 A CN201610202249 A CN 201610202249A CN 105821912 B CN105821912 B CN 105821912B
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- pattern
- support
- foundation ditch
- measured
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D33/00—Testing foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
Abstract
The present invention proposes a kind of method, intelligent foundation ditch support meanss and intelligent foundation pit support system for detecting foundation ditch axial force of the supports, belongs to foundation ditch detection technique field.This method draws pattern to be measured in support beam or with Based on Feature Points pattern to be measured；The deformation characteristics parameter of setting is calculated by analyzing the deformation of pattern to be measured；A series of known axle powers are acted in support beam and calculate the deformation characteristics parameter of pattern to be measured under each axle power, is demarcated, obtains the calibration curve between the deformation characteristics parameter of pattern to be measured and axle power；During actual monitoring, the current deformation of pattern to be measured is detected, calculates current deformation characteristics parameter；According to calibration curve and current deformation characteristics parameter, the current suffered axle power of the beam that is supported.The present invention can use in the presence of a harsh environment, and measurement accuracy is high, and measuring part can be reused, service life length, and reliability is high.
Description
Technical field
The invention belongs to foundation ditch detection technique field, is related to a kind of technology for detecting foundation ditch axial force of the supports.
Background technology
With the fast development of urban construction, down town deep-foundation pit engineering is also more and more, system of deep foundation pit support
Structure Calculation and information-based test are constructed significant.In foundation ditch the support shaft of cross-brace foundation pit enclosure be mainly used to
Caused power under anti-surrounding soil oppression, axial force of the supports, which exceedes design strength, easily causes support to destroy, and then causes
Whole foundation pit supporting system unstability simultaneously ultimately results in foundation pit collapse.Because a variety of accidentalia act on, foundation ditch actual support axle power
There is some difference for the axial force of the supports numerical value of data and detailed estimate, therefore very necessary to the test constantly of axial force of the supports.Branch
Support axle power is must measure in pit retaining monitoring, and axial force of the supports monitoring may determine that supporting construction calculating achievement and the difference for operating mode of constructing
Away from whether rationally, and one of early warning most intuitively method during deep pit construction.
The monitoring method of current axial force of foundation pit steel support mainly has two kinds：One kind is by installing reinforcing bar on bracing members surface
The load-sensing units such as stressometer, strain gauge are observed；It is another then be bracing members end install special " axle power meter " enter
Row observation.The above method is contact measurement method, and sensing element needs to be arranged on bracing members device, the work of sensing element
Make bad environments, the stability that works long hours is difficult to ensure that, and can not be reused；Meanwhile these methods needs are larger
Work on the spot amount, implement complicated.
The content of the invention
It is an object of the invention to provide a kind of foundation ditch axial force of the supports detection technique, to enable detection part to repeat to make
With, and reduce the work on the spot amount in whole process and avoid the work on the spot in detection process.
In order to achieve the above object, solution of the invention is：
A kind of method for detecting foundation ditch axial force of the supports, pattern to be measured is drawn in support beam or treats mapping with Based on Feature Points
Case；The deformation characteristics parameter of setting is calculated by analyzing the deformation of the pattern to be measured；A system is acted in the support beam
Axle power known to row and the deformation characteristics parameter for calculating the pattern to be measured under each axle power, are demarcated, and obtain described treating mapping
Calibration curve between the deformation characteristics parameter and axle power of case；During actual monitoring, the current of the pattern to be measured is detected
Deformation, calculates current deformation characteristics parameter；According to the calibration curve and the current deformation characteristics parameter, it is supported
The current suffered axle power of beam.
The pattern to be measured is square.
Deformation characteristics parameter is that support beam integrates deformation △ L/L, and computational methods are as follows：
△ L/L=(△ L3/L3-△ L1/L1+ △ L4/L4-△ L2/L2)/4
Wherein：L1 and L2 is the initial length of side on two sides that square shrinks, and △ L1 and △ L2 are two of the contraction
The contracted length on side；
L3 and L4 is the initial length of side on two sides of square elongation, and △ L3 and △ L4 are stretching for two sides of the elongation
Length.
A kind of intelligent foundation ditch support meanss of the method for above-mentioned detection foundation ditch axial force of the supports, including support body and intelligence are known
Other part；The support body includes support beam, and the pattern to be detected of drafting is included in the support beam or is characterized to be detected
The characteristic point of pattern；The Intelligent Recognition part includes housing and installation on the housing and towards the pattern to be detected
Image acquisition units, image analysis processing unit and light source, and by the housing be arranged on it is described support body on, with by
The light source irradiates the pattern to be detected, and by described image collecting unit detect the pattern to be detected change and by
Described image analysis and processing unit calculates the current suffered axle power of the support beam according to the change of the pattern to be detected.
The housing seal covers the pattern to be detected, irradiates the pattern to be detected to completely cut off external light source.
Also include the sealant tape around the pattern arrangement to be detected in the support beam, with to the figure to be detected
Carry out dust and water protection.
The first mounting hole and the second mounting hole are provided with the support beam, the 3rd installation is arranged in correspondence with the housing
Hole and the 4th mounting hole, with by the first mounting hole and the 3rd mounting hole, and the second mounting hole and the 4th mounting hole will described in
Support body connects with the Intelligent Recognition part.
The Intelligent Recognition part also includes communication cable and/or antenna, to allow the intelligent foundation ditch support meanss to connect
External device (ED) is connect, and the obtained axle power is sent out.
A kind of intelligent foundation pit support system based on above-mentioned intelligent foundation ditch support meanss, including at least one intelligent foundation ditch branch
Support arrangement, data collecting instrument and monitoring cloud platform；Each intelligent foundation ditch support meanss include communication cable, and by each
From communication cable be connected with data collecting instrument, to allow each intelligent foundation ditch support meanss of data collecting instrument collection
The axle power of the support load bearing beam of detection；The data collecting instrument includes first antenna；The monitoring cloud platform includes the second antenna,
With the axle power born by the second antenna and each support beam of first antenna communication acquisition.
It is described to monitor cloud platform also by the axle power that each support beam is born compared with the threshold value set, and more than institute
State threshold value alarm.
Due to using such scheme, the beneficial effects of the invention are as follows：The present invention proposes a kind of detection foundation ditch axial force of the supports
Method, intelligent foundation ditch support meanss and the intelligent foundation pit support system based on the device, wherein support beam in particular steel branch
Beam is supportted, the technology can use in the presence of a harsh environment, and measurement accuracy is high, and measuring part may be reused, service life length, can
By property height；Meanwhile related personnel can by the mobile terminal enquiries such as client computer or mobile phone network bracing members beam by
Power and alert data, can effectively reduce the work on the spot amount of whole process, and avoid the work on the spot in detection process.
Brief description of the drawings
Fig. 1 is the structural representation of intelligent foundation pit steel support device in one embodiment of the invention；
Fig. 2 is the top view of bracing members body in intelligent foundation pit steel support device in Fig. 1；
Fig. 3 is the structural representation of intelligent foundation pit support system in one embodiment of the invention.
In accompanying drawing：1st, support steel beam；2nd, the first mounting hole；3rd, characteristic point；4th, sealant tape；5th, the second mounting hole；6th, shell
Body；7th, optical sensitive unit；8th, computer assisted image processing unit；9th, light source；10th, the 3rd mounting hole；11st, the 4th mounting hole；12、
Communication cable；13rd, antenna.
Embodiment
The present invention will be further described with reference to the accompanying drawings.
The present invention proposes a kind of method for detecting foundation ditch axial force of the supports, is a kind of detection foundation pit steel support in the present embodiment
The method of axle power, this method draw pattern to be measured on support steel beam or with Based on Feature Points patterns to be measured；Treated by analyzing this
Mapping case is deformed to calculate the deformation characteristics parameter of setting；A series of known axle powers are acted on the support steel beam and are calculated
The deformation characteristics parameter of the pattern to be measured, is demarcated under each axle power, obtain the deformation characteristics parameter of pattern to be measured and axle power it
Between calibration curve.During actual monitoring, the current deformation of the pattern to be measured is detected, calculates current deformation characteristics ginseng
Number；According to foregoing obtained calibration curve and current deformation characteristics parameter, the current suffered axle power of the girder steel that is supported.
In the present embodiment, the pattern to be measured is square, and deformation characteristics parameter is the synthesis deformation △ L/L of support steel beam,
Computational methods are as follows：
△ L/L=(△ L3/L3-△ L1/L1+ △ L4/L4-△ L2/L2)/4
Wherein：L1 and L2 is the initial length of side on two sides that square shrinks, and △ L1 and △ L2 are two of the contraction
The contracted length on side；L3 and L4 is the initial length of side on two sides of square elongation, and △ L3 and △ L4 are two of the elongation
The extended length on side.
In the present embodiment, support steel beam belongs to support body.
, should the invention also provides a kind of intelligent foundation ditch support meanss of the method based on above-mentioned detection foundation ditch axial force of the supports
Device includes support body and Intelligent Recognition part, and Fig. 1 show the structural representation of the device, is in the device described in Fig. 2
The top view of bracing members body.In the present embodiment, the intelligent foundation ditch support meanss are intelligent foundation pit steel support device, support body
For bracing members body.
The bracing members body includes support steel beam 1, and the sign drawn based on strain sensitive principle is included on the support steel beam 1
The characteristic point 3 (present invention in can also directly draw pattern to be detected) of pattern to be detected, the pattern to be detected in the present embodiment
For square, characteristic point 3 is four summits of the positive direction.Intelligent Recognition part include housing 6 and on housing 6 simultaneously
Steel branch is arranged on towards the image acquisition units 7 of pattern to be detected, image analysis processing unit 8 and light source 9, and by housing 6
Support on body, to irradiate pattern to be detected by light source 9, and by image acquisition units 7 detect the pattern to be detected change and
The current suffered axle power of the support steel beam 1 is calculated according to the change of the pattern to be detected by image analysis processing unit 8.It is calculated
Method is the foregoing method for detecting foundation ditch axial force of the supports.
Also include the sealant tape 4 around pattern region to be detected arrangement on support steel beam 1, to treat detection pattern
Carry out dust and water protection.The sealing of housing 6 covers pattern to be detected, irradiates the pattern to be detected, optimization inspection to completely cut off external light source
Survey effect.
The first mounting hole 2 and the second mounting hole 5 are provided with support steel beam 1；Housing 6 has the installation extended to both sides
Ear, the first mounting hole 2 is corresponded to respectively on the mounting ear of both sides and the second mounting hole 5 sets the 3rd mounting hole 10 and the 4th mounting hole
11, with by the first mounting hole 2 and the 3rd mounting hole 10, and the second mounting hole 5 and the 4th mounting hole 11 are by bracing members body
It is attached with Intelligent Recognition part.In the present embodiment, this is connected as being threadedly coupled, the first mounting hole 2, the second mounting hole 5,
Three mounting holes 10 and the 4th mounting hole 11 are threaded mounting hole.
Intelligent Recognition part also includes communication cable 12 and/or antenna 13, to allow the intelligent foundation pit steel support device to connect
External device (ED) is connect, and obtained axle power is sent out.
The invention also provides a kind of intelligent foundation pit support system based on above-mentioned intelligent foundation ditch support meanss.The intelligent base
Cheating support system includes at least one intelligent foundation ditch support meanss, data collecting instrument and monitors cloud platform, and Fig. 3 show the intelligence
The structural representation of foundation pit support system, wherein including the first intelligent foundation ditch support meanss altogether to N intelligence foundation ditch support meanss
N number of intelligent foundation ditch support meanss altogether, N is positive integer.Each intelligent foundation ditch support meanss include communication cable, and by respective
Communication cable be connected with data collecting instrument, to allow the support of each intelligent foundation ditch support meanss detection of data collecting instrument collection
The axle power of load bearing beam.In the present embodiment, each intelligent foundation ditch support meanss are connected to RS485 buses by communication cable, then by
RS485 buses are connected to data collecting instrument.
The data collecting instrument includes first antenna, and the monitoring cloud platform includes the second antenna, to pass through the second antenna and
One antenna communication obtains the axle power that each support beam is born.The axle power and setting that the monitoring cloud platform also bears each support beam
Threshold value be compared, and more than threshold value alarm.
In the present embodiment, the monitoring cloud platform also includes wireless communication terminal and cloud platform server.Second antenna and nothing
Line communication terminal is connected, and cloud platform server is connected with wireless communication terminal.The cloud platform server can also and external computer
And mobile communication, to realize computer monitor and/or monitoring mobile phone, so as to which related personnel can pass through client computer or mobile phone etc.
The stress and alert data of the intelligent foundation ditch support meanss of mobile terminal enquiry networking, can also receive warning message, so may be used
To find foundation ditch potential danger and timely processing protection.
In the present embodiment, the intelligent foundation ditch support meanss are intelligent foundation pit steel support device, and intelligent foundation pit support system is
Intelligent foundation pit steel support system.
The present invention propose it is a kind of detect the method for foundation ditch axial force of the supports, the intelligent foundation ditch support meanss based on this method with
And the intelligent foundation pit support system based on the device, it can use in the presence of a harsh environment, measurement accuracy is high, and measuring part can weigh
It is multiple to use, service life length, reliability height；Meanwhile related personnel can be looked into by mobile terminals such as client computer or mobile phones
The stress and alert data of the support beam of networking are ask, can effectively reduce the work on the spot amount of whole process, and avoid detecting
Work on the spot in journey.
The above-mentioned description to embodiment is understood that for ease of those skilled in the art and using this hair
It is bright.Person skilled in the art obviously easily can make various modifications to these embodiments, and described herein
General Principle is applied in other embodiment without by performing creative labour.Therefore, the invention is not restricted to implementation here
Example, for those skilled in the art according to the announcement of the present invention, not departing from improvement that scope made and modification all should be
Within protection scope of the present invention.
Claims (9)
- A kind of 1. intelligent foundation ditch support meanss of the method based on detection foundation ditch axial force of the supports, it is characterised in that：Including support originally Body and Intelligent Recognition part；The support body is support beam, and the feature for the pattern to be measured or sign pattern to be measured drawn is included in the support beam Point；The Intelligent Recognition part includes housing and installation on the housing and towards the IMAQ of the pattern to be measured Unit, image analysis processing unit and light source, and be arranged on by the housing in the support beam, to be irradiated by the light source The pattern to be measured, and detected the change of the pattern to be measured by described image collecting unit and analyzed and processed by described image Unit calculates the current suffered axle power of the support beam according to the change of the pattern to be measured；The method of the detection foundation ditch axial force of the supports includes：Pattern to be measured is drawn in support beam or treats mapping with Based on Feature Points Case；The deformation characteristics parameter of setting is calculated by analyzing the deformation of the pattern to be measured；A system is acted in the support beam Axle power known to row and the deformation characteristics parameter for calculating the pattern to be measured under each axle power, are demarcated, and obtain described treating mapping Calibration curve between the deformation characteristics parameter and axle power of case；During actual monitoring, the current deformation of the pattern to be measured is detected, calculates current deformation characteristics parameter；According to institute Calibration curve and the current deformation characteristics parameter are stated, the current suffered axle power of the beam that is supported.
- 2. intelligent foundation ditch support meanss according to claim 1, it is characterised in that：The pattern to be measured is square.
- 3. intelligent foundation ditch support meanss according to claim 2, it is characterised in that：Deformation characteristics parameter integrates for support beam Deformation △ L/L, computational methods are as follows：△ L/L=(△ L3/L3-△ L1/L1+ △ L4/L4-△ L2/L2)/4Wherein：L1 and L2 is the initial length of side on two sides that square shrinks, and △ L1 and △ L2 are two sides of the contraction Contracted length；L3 and L4 is the initial length of side on two sides of square elongation, and △ L3 and △ L4 are the elongation length on two sides of the elongation Degree.
- 4. intelligent foundation ditch support meanss according to claim 1, it is characterised in that：The housing seal covers described to be measured Pattern, irradiate the pattern to be measured to completely cut off external light source.
- 5. intelligent foundation ditch support meanss according to claim 1, it is characterised in that：Also include surrounding institute in the support beam The sealant tape of pattern arrangement to be measured is stated, to carry out dust and water protection to the pattern to be measured.
- 6. intelligent foundation ditch support meanss according to claim 1, it is characterised in that：The first peace is provided with the support beam Hole and the second mounting hole are filled, the 3rd mounting hole and the 4th mounting hole are arranged in correspondence with the housing, to pass through the first mounting hole The support beam and the Intelligent Recognition part are connected with the 4th mounting hole with the 3rd mounting hole, and the second mounting hole.
- 7. intelligent foundation ditch support meanss according to claim 1, it is characterised in that：The Intelligent Recognition part also includes logical Communication cable and/or antenna, to allow the intelligent foundation ditch support meanss connection external device (ED), and the obtained axle power is outside Send.
- A kind of 8. intelligent foundation ditch branch of the method based on detection foundation ditch axial force of the supports based on any one of claim 1-7 The intelligent foundation pit support system of support arrangement, it is characterised in that：Including at least one intelligent foundation ditch support meanss, data collecting instrument and Monitor cloud platform；Each intelligent foundation ditch support meanss include communication cable, and are connected by respective communication cable and data collecting instrument Connect, to allow the axle power of the support load bearing beam of each intelligent foundation ditch support meanss detection of the data collecting instrument collection；The data collecting instrument includes first antenna；The monitoring cloud platform includes the second antenna, to pass through the second antenna and the One antenna communication obtains the axle power that each support beam is born.
- 9. intelligent foundation pit support system according to claim 8, it is characterised in that：The monitoring cloud platform will also be propped up each The axle power received of support joist support is compared with the threshold value of setting, and more than the threshold value alarm.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202249.XA CN105821912B (en) | 2016-04-01 | 2016-04-01 | Detect method, intelligent foundation ditch support meanss and the intelligent foundation pit support system of foundation ditch axial force of the supports |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610202249.XA CN105821912B (en) | 2016-04-01 | 2016-04-01 | Detect method, intelligent foundation ditch support meanss and the intelligent foundation pit support system of foundation ditch axial force of the supports |
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| Publication Number | Publication Date |
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| CN105821912A CN105821912A (en) | 2016-08-03 |
| CN105821912B true CN105821912B (en) | 2017-12-22 |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106930295A (en) * | 2017-03-17 | 2017-07-07 | 上海同禾土木工程科技有限公司 | A kind of axial force of the supports servomechanism installation with temperature adjustmemt and method |
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|---|---|---|---|---|
| CN101514928A (en) * | 2009-03-20 | 2009-08-26 | 北京航空航天大学 | Method for calibrating micro thrust |
| CN102914282A (en) * | 2012-10-18 | 2013-02-06 | 中铁隧道集团有限公司 | Monitoring and measuring method using displacement sensor to measure tunnel deformation |
| CN102943493A (en) * | 2012-12-04 | 2013-02-27 | 上海交通大学 | Method for measuring internal force and deformation of precast pile |
| CN202925536U (en) * | 2012-12-04 | 2013-05-08 | 中铁二十一局集团有限公司 | Deep foundation pit stress stability remote intelligent monitoring and three-dimensional early-warning system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08326155A (en) * | 1995-06-02 | 1996-12-10 | Kajima Corp | Overturning control device for structure |
-
2016
- 2016-04-01 CN CN201610202249.XA patent/CN105821912B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101514928A (en) * | 2009-03-20 | 2009-08-26 | 北京航空航天大学 | Method for calibrating micro thrust |
| CN102914282A (en) * | 2012-10-18 | 2013-02-06 | 中铁隧道集团有限公司 | Monitoring and measuring method using displacement sensor to measure tunnel deformation |
| CN102943493A (en) * | 2012-12-04 | 2013-02-27 | 上海交通大学 | Method for measuring internal force and deformation of precast pile |
| CN202925536U (en) * | 2012-12-04 | 2013-05-08 | 中铁二十一局集团有限公司 | Deep foundation pit stress stability remote intelligent monitoring and three-dimensional early-warning system |
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