CN106592563B - A kind of device and its measurement method of monitoring settlement of foundation - Google Patents
A kind of device and its measurement method of monitoring settlement of foundation Download PDFInfo
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- CN106592563B CN106592563B CN201710012467.1A CN201710012467A CN106592563B CN 106592563 B CN106592563 B CN 106592563B CN 201710012467 A CN201710012467 A CN 201710012467A CN 106592563 B CN106592563 B CN 106592563B
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- ultrasonic
- sedimentation
- readout instrument
- ultrasonic transmitter
- receiver
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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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
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- General Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Soil Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
The invention discloses a kind of devices and its measurement method of monitoring settlement of foundation, including sedimentation bar, the first ultrasonic transmitter, the second ultrasonic transmitter, ultrasonic receiver, sedimentation readout instrument, reference stake；Sedimentation bar is placed at the observation point on ground, same vertical direction disposes two ultrasonic transmitters on sedimentation bar, ultrasonic receiver is placed on reference stake, ultrasonic receiver is transmitted to sedimentation readout instrument after receiving the signals of two ultrasonic transmitters, it is obtained at a distance from vertical direction of two ultrasonic transmitters with the respective distance of ultrasonic receiver and two ultrasonic transmitters relative to ultrasonic receiver as the computing chip built in sedimentation readout instrument, the vertical distance change by recording different moments is to understand the settling amount on the moment ground surface layer.Using ultrasonic measuring distance technology, data acquisition, which is read, to be conveniently easy to get, precisely reliable, can realize that real-time online continuously monitors to settlement of foundation, improve work efficiency.
Description
Technical field
The present invention relates to groundwork detection technologies, and in particular to a kind of device and its measurement method of monitoring settlement of foundation.
Background technology
In the construction process for carrying out the facilities such as building, highway, railway, need to carry out consolidation process to ground, so that
Its foundation bearing capacity reaches engineering specification.It is most important to the monitoring in real time of settlement of foundation in the process.For example, if work
Journey is built on soft soil foundation, then to carry out ground preloading to eliminate settlement of foundation, settlement observation must be also carried out in reinforcing process,
To analyze the reinforcement degree of ground in time, it is determined whether reach design requirement and unloaded again.Currently, monitoring settlement of foundation is normal
Method is：Sedimentation plate is set on ground surface layer, spirit level is set up by tripod, ruler is manually helped to measure sedimentation plate to measure
Elevation, the elevation variation for settling plate just reflects the settling amount of ground.There are limitations for this method：(1) it needs manually to help ruler,
And ruler is manually helped to cannot be guaranteed that scale is vertically vertical, it is easy to cause error；(2) artificial reading easily causes reading error, observation essence
Degree is poor；(3) it when being measured every time using spirit level, needs to adjust, take time and effort, and sedimentation cannot be monitored in real time.
Chinese patent (number of patent application 201610273638.1) discloses " large area super soft foundation settlement monitoring device
And monitoring method ", structure includes reference stake, sedimentation plate, levelling rod, and sedimentation plate is positioned over ground surface layer to be measured, and levelling rod is solid
Due on sedimentation plate, which measures the scale variation of levelling rod, obtains ground by the observation instrument being erected on reference stake
The settling amount on surface layer.This method avoid erection tripods when tradition observes settlement of foundation using spirit level to help ruler to turn with artificial
Stand measurement the shortcomings that, but there are still following deficiencies when in use for this method：(1) scale of spirit level observation levelling rod is used
When, if oblique leveling staff, error in reading can be caused；(2) the method still needs to manual record and calculates data, cannot read ground in real time
Base settles.
Invention content
Purpose：In order to overcome the deficiencies in the prior art, the present invention provide a kind of monitoring settlement of foundation device and
Its measurement method, it is convenient, time saving and energy saving that principle of device is simple, data acquisition is read, and need not carry out the measurement of the level, avoid people
Part work and part study number, precision is higher, and can monitor settlement of foundation in real time, is applicable to various engineering fields.
Technical solution：In order to solve the above technical problems, the technical solution adopted by the present invention is：
A kind of device of monitoring settlement of foundation, it is characterised in that：Including sedimentation bar, the first ultrasonic transmitter, the second surpass
Pinger, ultrasonic receiver, sedimentation readout instrument, reference stake；
The sedimentation bar is vertically arranged at the observation point on ground surface layer to be measured；First ultrasonic transmitter and second
Ultrasonic transmitter setting is located on sedimentation bar and towards reference stake, the first ultrasonic transmitter and the second ultrasonic transmitter
Settle the same side and at intervals of bar；The reference stake is vertically arranged and bottom is embedded in firm soil layer, described
Sedimentation readout instrument is fixed on reference stake；The ultrasonic receiver is connected with sedimentation readout instrument.
Preferably, the device of the monitoring settlement of foundation, it is characterised in that：Further include bearing, the bearing
Connection setting is fixed in reference stake top, sedimentation readout instrument on the platform of bearing formation, and blending bolt is fixed.
Preferably, first ultrasonic transmitter and the second ultrasonic transmitter emit for piezoelectric ultrasonic
Device, specification are respectively 60KHz and 40KHz.
Preferably, first ultrasonic transmitter and the second ultrasonic transmitter are at a distance of 50mm, the company of the two
Line is parallel to sedimentation bar.
Preferably, the sedimentation readout instrument includes ultrasonic signal output port and computing chip, sedimentation reading
Instrument is connect by ultrasonic signal output port with ultrasonic receiver.It is further preferred that the sedimentation readout instrument is portable reading
Instrument.The settling amount on each moment ground surface layer can be directly displayed out by computing chip by ultrasonic signal output port.
Reference stake is embedded in firm soil layer, can select concrete-pile or steel-pipe pile according to geological conditions.Reference stake absolute altitude
It should be higher than that ground surface layer 1000-1500mm.
The present invention also provides the measurement methods of the device of above-mentioned monitoring settlement of foundation, measure initial time t=T first0
Vertical distance H0, when through settlement of foundation after a period of time, t=T is read on sedimentation readout instrumentiThe vertical distance H at momenti,
Vertical range difference in this period is settlement of foundation Δ H=Hi-H0.Specifically comprise the following steps：
(1) datum mark is chosen, reference stake is squeezed into default firm soil layer, bearing is fixed on reference stake top；
(2) observation point is chosen, sedimentation bar is embedded in the ground surface layer at observation point, and by the first ultrasonic transmitter
It is fixed on sedimentation bar with the second ultrasonic transmitter, towards reference stake；
(3) ultrasonic receiver is connect with the ultrasonic signal output port in sedimentation readout instrument, and sedimentation is read
Instrument is fixed on the support, towards sedimentation bar；
The distance between (4) first ultrasonic transmitters and the second ultrasonic transmitter are L, carve t=T at the beginning0When,
Readout instrument is settled by the way that ultrasonic signal output port is incoming after the sound wave of ultrasonic receiver the first ultrasonic transmitter of reception,
It can get initial oblique distance S between the twoA0；Pass through ultrasonic wave after the sound wave of ultrasonic receiver the second ultrasonic transmitter of reception
The incoming sedimentation readout instrument of data can get initial oblique distance S between the two by signal output portB0；It is fixed using triangle cosine
Reason can acquire length of side L and bevel edge SA0Press from both sides cosine of an angleAnd then the first ultrasonic transmitter can be acquired
To the initial vertical distance between ultrasonic receiver
(5) after a period of time, i.e. t=Ti, ground settles, when repeatedly the measurement of step (4) obtains this at this time
Carve TiVertical distance between first ultrasonic transmitter and ultrasonic receiver Wherein,
SAiIt indicates in t=TiThe first ultrasonic transmitter of moment is to the oblique distance between ultrasonic receiver, SBiIt indicates in t=TiMoment
Two ultrasonic transmitters are to the oblique distance between ultrasonic receiver, cos θiIndicate length of side L and bevel edge SAiPress from both sides cosine of an angle；
(6) total settlement of this period is directly displayed finally by computing chip on sedimentation readout instrument
Advantageous effect：Device and its measurement method provided by the invention based on monitoring ultrasonic settlement of foundation, based on super
Technology of acoustic wave avoids the complexity of measurement of the level technology, has the following advantages：1. ultrasonic measuring distance technology is ripe, essence is measured
Degree is high, obtains a result accurate reliable；2. the present apparatus can monitor settlement of foundation in real time.Measuring device is simple in structure, easily operated,
It avoids and measures the error brought and cumbersome indirectly, can be used for promoting on a large scale.
Description of the drawings
Fig. 1 is apparatus of the present invention structural schematic diagram；
Fig. 2 is present invention sedimentation readout instrument structural schematic diagram；
Fig. 3 is present invention monitoring settlement of foundation process schematic；
In figure：Settle bar 1, the first ultrasonic transmitter 2, the second ultrasonic transmitter 3, ultrasonic receiver 4, sedimentation reading
Number instrument 5, bearing 6, reference stake 7；Ultrasonic signal output port 51, computing chip 52.
Specific implementation mode
The present invention is further described with reference to specific embodiment.
As shown in Figure 1, a kind of device based on monitoring ultrasonic settlement of foundation, including sedimentation bar 1, the transmitting of the first ultrasonic wave
Device 2, the second ultrasonic transmitter 3, ultrasonic receiver 4, sedimentation readout instrument 5, bearing 6, reference stake 7；
As shown in Fig. 2, sedimentation readout instrument 5 includes ultrasonic signal output port 51 and computing chip 52.Settle readout instrument 5
It is positioned on bearing 6, blending bolt is fixed.Sedimentation readout instrument 5 is portable digital reader.
Reference stake 7 is embedded in firm soil layer, absolute altitude base table layer 1000-1500mm above Ground makes bearing 6 and benchmark
7 top of stake is bonded.Sedimentation bar 1 is positioned at the observation point on ground surface layer to be measured, the absolute altitude of sedimentation bar 1 should be higher than that benchmark
The absolute altitude 400mm or so of stake 7.First ultrasonic transmitter 2 and the second ultrasonic transmitter 3 are piezoelectric-type ultrasonic wave launcher
(specification is respectively 60KHz and 40KHz) is arranged on sedimentation bar 1, and towards the ultrasonic receiver on reference stake 7.The first surpass
At a distance of 50mm (L=50mm), the line of the two is parallel to sedimentation bar 1, and hangs down for pinger 2 and the second ultrasonic transmitter 3
Directly in ground.Ultrasonic receiver is connected with the ultrasonic signal output port in sedimentation readout instrument 5.Readout instrument 5 is settled to fix
In on the platform that bearing 6 is formed.
As shown in figure 3, the distance between the first ultrasonic transmitter 2 and the second ultrasonic transmitter 3 are L, at the beginning
Carve t=T0When, ultrasonic receiver 4 receive the first ultrasonic transmitter 2 sound wave after pass through ultrasonic signal output port 51
Incoming sedimentation readout instrument 5, can get initial oblique distance S between the twoA0；Ultrasonic receiver 4 receives the second ultrasonic transmitter 3
Sound wave after by ultrasonic signal output port 51 by the incoming sedimentation readout instrument 5 of data, can get between the two it is initial tiltedly
Away from SB0；Length of side L and bevel edge S can be acquired using the triangle cosine lawA0Press from both sides cosine of an angleIn turn
The first ultrasonic transmitter 2 can be acquired to the initial vertical distance between ultrasonic receiver 4 After a period of time, i.e. t=Ti, ground settles, when measurement obtains this at this time
Carve TiVertical distance H between first ultrasonic transmitter and ultrasonic receiveri Wherein,
SAiIt indicates in t=TiThe first ultrasonic transmitter of moment is to the oblique distance between ultrasonic receiver, SBiIt indicates in t=TiMoment
Two ultrasonic transmitters are to the oblique distance between ultrasonic receiver, cos θiIndicate length of side L and bevel edge SAiPress from both sides cosine of an angle；Finally
The total settlement of this period is directly displayed by settling computing chip 52 on readout instrument 5
The above is only a preferred embodiment of the present invention, it should be pointed out that：For the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (8)
1. a kind of device of monitoring settlement of foundation, it is characterised in that：Including sedimentation bar, the first ultrasonic transmitter, the second ultrasound
Wave launcher, ultrasonic receiver, sedimentation readout instrument, reference stake；
The sedimentation bar is vertically arranged at the observation point on ground surface layer to be measured；First ultrasonic transmitter and the second ultrasound
Wave launcher setting is located at sedimentation on sedimentation bar and towards reference stake, the first ultrasonic transmitter and the second ultrasonic transmitter
The same side of bar and at intervals；The reference stake is vertically arranged and bottom is embedded in firm soil layer, the sedimentation
Readout instrument is fixed on reference stake；The ultrasonic receiver is connected with sedimentation readout instrument.
2. the device of monitoring settlement of foundation according to claim 1, it is characterised in that：Further include bearing, the bearing connects
Setting is connect on reference stake top, sedimentation readout instrument is fixed on the platform of bearing formation.
3. the device of monitoring settlement of foundation according to claim 1, it is characterised in that：First ultrasonic transmitter and
Second ultrasonic transmitter is piezoelectric-type ultrasonic wave launcher, and specification is respectively 60KHz and 40KHz.
4. the device of monitoring settlement of foundation according to claim 1, it is characterised in that：First ultrasonic transmitter and
Second ultrasonic transmitter is parallel to sedimentation bar at a distance of 50mm, the line of the two.
5. the device of monitoring settlement of foundation according to claim 1, it is characterised in that：The sedimentation readout instrument includes ultrasound
Wave signal output port and computing chip, sedimentation readout instrument are connect by ultrasonic signal output port with ultrasonic receiver.
6. the device of monitoring settlement of foundation according to claim 1, it is characterised in that：The sedimentation readout instrument is portable
Readout instrument.
7. the device of monitoring settlement of foundation according to claim 1, it is characterised in that：The reference stake be concrete-pile or
Steel-pipe pile.
8. monitoring the measurement method of the device of settlement of foundation according to claim 1-7 any one of them, which is characterized in that including
Following steps：
(1) datum mark is chosen, reference stake is squeezed into default firm soil layer, bearing is fixed on reference stake top；
(2) observation point is chosen, sedimentation bar is embedded in the ground surface layer at observation point, and by the first ultrasonic transmitter and the
Two ultrasonic transmitters are fixed on sedimentation bar, towards reference stake；
(3) ultrasonic receiver is connect with the ultrasonic signal output port in sedimentation readout instrument, and sedimentation readout instrument is consolidated
Due on bearing, towards sedimentation bar；
The distance between (4) first ultrasonic transmitters and the second ultrasonic transmitter are L, carve t=T at the beginning0When, ultrasound
By the incoming sedimentation readout instrument of ultrasonic signal output port after the sound wave of wave receiver the first ultrasonic transmitter of reception, can obtain
Obtain initial oblique distance S between the twoA0；Pass through ultrasonic signal after the sound wave of ultrasonic receiver the second ultrasonic transmitter of reception
The incoming sedimentation readout instrument of data can get initial oblique distance S between the two by output portB0；It can using the triangle cosine law
Acquire length of side L and bevel edge SA0Press from both sides cosine of an angleAnd then can acquire the first ultrasonic transmitter to surpass
Initial vertical distance between acoustic receiver
(5) after a period of time, i.e. t=Ti, ground settles, and repeatedly the measurement of step (4) obtains moment T at this timeiThe
Vertical distance between one ultrasonic transmitter and ultrasonic receiver Wherein, SAiTable
Show in t=TiThe first ultrasonic transmitter of moment is to the oblique distance between ultrasonic receiver, SBiIt indicates in t=TiMoment the second surpasses
Pinger is to the oblique distance between ultrasonic receiver, cos θiIndicate length of side L and bevel edge SAiPress from both sides cosine of an angle；
(6) total settlement of this period is directly displayed finally by computing chip on sedimentation readout instrument
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710012467.1A CN106592563B (en) | 2017-01-09 | 2017-01-09 | A kind of device and its measurement method of monitoring settlement of foundation |
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| CN201710012467.1A CN106592563B (en) | 2017-01-09 | 2017-01-09 | A kind of device and its measurement method of monitoring settlement of foundation |
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| CN106592563A CN106592563A (en) | 2017-04-26 |
| CN106592563B true CN106592563B (en) | 2018-08-14 |
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| CN107780309A (en) * | 2017-11-21 | 2018-03-09 | 长安大学 | A kind of sedimentation applied to track eliminates system and method in real time |
| CN108755646A (en) * | 2018-05-02 | 2018-11-06 | 中铁大桥局第七工程有限公司 | A kind of the top surface displacement monitor and method of foundation pit enclosure structure |
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| CN109827542A (en) * | 2019-03-20 | 2019-05-31 | 交通运输部天津水运工程科学研究所 | A kind of settlement of foundation automated watch-keeping facility based on laser ranging module |
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| CN111257537B (en) * | 2020-02-14 | 2021-06-01 | 山东大学(齐河)新材料与智能装备研究院 | Soil settlement layered monitoring device, mounting method and using method |
| CN111648340A (en) * | 2020-05-31 | 2020-09-11 | 张达芬 | Foundation measuring device for building engineering |
| CN111965060B (en) * | 2020-08-03 | 2023-06-09 | 河海大学 | Press-in type on-site rebound modulus measuring device |
| CN112525150A (en) * | 2020-11-27 | 2021-03-19 | 贵州建工集团第一建筑工程有限责任公司 | Building foundation settlement monitoring device |
| CN114045886B (en) * | 2021-11-09 | 2023-02-03 | 深圳供电局有限公司 | GIL pipe gallery foundation settlement online monitoring method |
| CN114234911B (en) * | 2021-12-09 | 2024-06-04 | 南京苏逸实业有限公司 | Ultrasonic sedimentation and horizontal displacement measuring device using Beidou positioning |
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| JPH11257952A (en) * | 1998-03-12 | 1999-09-24 | Toyoko Hermes:Kk | Settlement gauge |
| CN201903345U (en) * | 2010-11-18 | 2011-07-20 | 中交第一公路勘察设计研究院有限公司 | Assembled automatic monitoring system for roadbed layered settlement |
| CN102735212A (en) * | 2012-06-18 | 2012-10-17 | 电子科技大学 | Monitoring method for subgrade settlement, and device thereof |
| CN103512550A (en) * | 2012-06-26 | 2014-01-15 | 上海勘测设计研究院 | Deepwater embankment foundation settlement viewer |
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