CN108716898A - Pier subsidence monitoring platform - Google Patents
Pier subsidence monitoring platform Download PDFInfo
- Publication number
- CN108716898A CN108716898A CN201810721314.9A CN201810721314A CN108716898A CN 108716898 A CN108716898 A CN 108716898A CN 201810721314 A CN201810721314 A CN 201810721314A CN 108716898 A CN108716898 A CN 108716898A
- Authority
- CN
- China
- Prior art keywords
- governor weight
- stock
- ultrasonic sensor
- card
- sensor
- Prior art date
- 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.)
- Pending
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B17/00—Measuring arrangements characterised by the use of infrasonic, sonic or ultrasonic vibrations
Abstract
The invention discloses a kind of pier subsidence monitoring platforms, including stock, pulley, governor weight, ultrasonic sensor, lifting position-limit card and descending spacing card, above-mentioned component is respectively positioned on inside stock, stock is fixedly mounted through installation with around bridge pier by steel wire rope, pulley one end connects governor weight, and the other end connects ultrasonic sensor.Governor weight with tidal level rise it is corresponding rise, ultrasonic sensor declines, and sensor does not have upstream face completely when governor weight to lifting position-limit card, starts to measure；When otherwise tidal level declines, ultrasonic sensor rises, and leaves the water surface.Complete unit of the present invention is mountable to the water surface or more, avoids conventional method needs and is installed under water, reduces sensor installing engineering difficulty；Inventive sensor is only submerged in high tide level in water simultaneously, is reduced and is invaded busy, has delayed sensor surface biological growth speed, promoted measure data precision, extend the instrument maintenance time.
Description
Technical field
The present invention relates to pier subsidence monitoring platforms, and in particular to a kind of pier subsidence monitoring platform.
Background technology
Cross a river or Oversea bridge are influenced by Building technology, generally require build bridge pier, bridge pier change ambient water and
Sediment movement makes riverbed generate mutually deserved adjustment, and bed surface forms scour hole around pier stud.Bed scour near bridge pier can endanger
The stabilization and safety of evil building itself, excessive washing away will lead to bridge unstability and destruction, a lot of bridge waters occurred so far
Event is ruined, heavy losses are caused to people's lives and properties.Therefore, monitoring pier subsidence hole depth and variation tendency are for maintenance bridges
Safety beam is most important.
Supersonic sounding technology is monitored extensively using pier subsidence, because spread speed is different in different medium for ultrasonic wave,
In water-depth measurement, it is necessary to which ultrasonic wave is placed in the water surface or less.Meanwhile in briny environment, biology is easily attached to sensor
Surface, influences the transmitting and reception of ultrasonic wave, and the measure taken at present is to remove ultrasonic sensor at interval of after a period of time
It is cleaned, cost is higher.
Invention content
Goal of the invention：The object of the present invention is to provide a kind of pier subsidence monitoring platforms, solve sensor and measure under water
It is easy aufwuch, ultrasonic wave is influenced and receives transmitting, cleaning is inconvenient, the high problem of maintenance cost.
Technical solution：Pier subsidence monitoring platform of the present invention, including stock are provided with pulley on the stock,
Pulley draws governor weight by steel wire one end, and the other end draws ultrasonic sensor, limiting card is provided with to limit in the stock
The fixed governor weight stroke, the stock outside are provided with installation companion.
In order to facilitate fixed cage, reduce impact of the seawater to stock, installation is more stable, and the installation is with including upper and lower two
Group, every group contains two and is arranged symmetrically, and companion is installed by stock length direction trisection in same side two.
It is just flushed with mouth under stock when in order to make ultrasonic sensor decline, stock will not interfere ultrasonic wave to emit, institute
It includes lifting position-limit card and descending spacing card to state limiting card, and the distance between the lifting position-limit card and descending spacing card are L, L>
(ΔH/2+h1+h2), wherein governor weight height is h1, ultrasonic sensor height is h2, position tidal range to be measured is Δ H.
The lifting position-limit card and descending spacing card are netted permeable structure.
In order to meet governor weight under buoyancy, it is less than the pulling force that ultrasonic sensor generates, it is ensured that supersonic sensing
Device smoothly declines；After meeting tidal level decline simultaneously, governor weight, which can smoothly decline, makes ultrasonic sensor accordingly rise, the adjusting
Hammer is cylinder, and quality is more than ultrasonic sensor, governor weight density p1, volume V1, ultrasonic sensor density is ρ2, body
Product is V2, measurement position density of sea water is ρ0, meet condition：ρ1> ρ2、V1>V2(ρ1-ρ0)V1< (ρ2-ρ0)V2。
Advantageous effect：The present invention solves sensor easy growth in the case where seawater invades bubble for a long time when measuring, and seriously affects
Measurement data problem, the present invention is when tidal level goes up, and using pulley, pushes governor weight that sensor is made to drop to the water surface by buoyancy
Under start to measure, when ebb tide, governor weight declines under the effect of gravity, and sensor is driven to rise, and avoids sensor from invading bubble for a long time and exists
Seawater reduces the aquatic organism speed of growth, extends the instrument maintenance time.
Description of the drawings
Fig. 1 is the structural schematic diagram of the present invention.
Specific implementation mode
Invention is described further below in conjunction with the accompanying drawings.
As shown in Figure 1, pier subsidence monitoring platform includes stock 1, pulley 2 is provided on stock 1, pulley 2 passes through steel wire
Governor weight 3 is drawn in one end, and the other end draws ultrasonic sensor 4, and governor weight 3 limits fortune by the limiting card being arranged on stock 1
Dynamic stroke, in order to facilitate fixed cage, installation includes upper and lower two groups with 6, and every group is two and is symmetricly set on stock both sides, phase
With by stock length direction trisection, limiting card includes lifting position-limit card and descending spacing card, lifting position-limit card 5 for the installation of homonymy
It is netted permeable structure with descending spacing card 7, the distance between lifting position-limit card and descending spacing card are L, L>(ΔH/2+h1+
h2), wherein governor weight height is h1, ultrasonic sensor height is h2, position tidal range to be measured is Δ H.It is high to cover top of the trellis installation
Journey is H0, highest water level H in position to be measuredmax, the distance of set top of the trellis to pulley is B, then H0>Hmax+ B, governor weight 3 are cylinder,
Quality is more than ultrasonic sensor 4, governor weight density p1, volume V1, ultrasonic sensor density is ρ2, volume V2, measure
Position density of sea water is ρ0, meet condition：ρ1> ρ2、V1>V2(ρ1-ρ0)V1< (ρ2-ρ0)V2。
When using the present invention, when tidal level rises, governor weight is submerged in water body, and governor weight rises under buoyancy, is surpassed
Sonic sensor is begun to decline, and governor weight moves to limiting card, and ultrasonic sensor is sunken to the water surface hereinafter, starting to measure water completely
It is deep；Tidal level declines, and governor weight declines under the effect of gravity, and ultrasonic sensor is driven to rise, and ultrasonic sensor leaves the water surface,
Stop measuring.The present invention avoids sensor from invading bubble for a long time in seawater, the aquatic organism speed of growth is reduced, when extending instrument maintenance
Between.
Claims (5)
1. a kind of pier subsidence monitoring platform, which is characterized in that including stock (1), sliding (2) wheel is provided on the stock (1),
Pulley (2) draws governor weight (3) by steel wire one end, and the other end draws ultrasonic sensor (4), is arranged in the stock (1)
There is limiting card to limit the governor weight (3) stroke, installation companion is provided on the outside of the stock (1).
2. pier subsidence monitoring platform according to claim 1, which is characterized in that the installation includes upper and lower two with (6)
Group, every group contains two and is arranged symmetrically, and companion is installed by stock length direction trisection in same side two.
3. pier subsidence dynamic monitor according to claim 1, which is characterized in that the limiting card includes upper ceiling
Position card (5) and descending spacing card (7), the distance between the lifting position-limit card (5) and descending spacing card (7) are L, L>(ΔH/2
+h1+h2), wherein governor weight height is h1, ultrasonic sensor height is h2, position tidal range to be measured is Δ H.
4. pier subsidence dynamic monitor according to claim 3, which is characterized in that the lifting position-limit card (5) and
Descending spacing card (7) is netted permeable structure.
5. pier subsidence monitoring platform according to claim 1, which is characterized in that the governor weight (3) is cylinder, matter
Amount is more than ultrasonic sensor, governor weight density p1, volume V1, ultrasonic sensor density is ρ2, volume V2, measure position
The density for setting water is ρ0, meet condition：ρ1> ρ2、V1>V2(ρ1-ρ0)V1< (ρ2-ρ0)V2。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721314.9A CN108716898A (en) | 2018-07-03 | 2018-07-03 | Pier subsidence monitoring platform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810721314.9A CN108716898A (en) | 2018-07-03 | 2018-07-03 | Pier subsidence monitoring platform |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108716898A true CN108716898A (en) | 2018-10-30 |
Family
ID=63912443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810721314.9A Pending CN108716898A (en) | 2018-07-03 | 2018-07-03 | Pier subsidence monitoring platform |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108716898A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366349A (en) * | 2020-03-09 | 2020-07-03 | 河海大学 | Large-span suspension bridge power test device with dynamically adjustable mass |
-
2018
- 2018-07-03 CN CN201810721314.9A patent/CN108716898A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111366349A (en) * | 2020-03-09 | 2020-07-03 | 河海大学 | Large-span suspension bridge power test device with dynamically adjustable mass |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181030 |
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| RJ01 | Rejection of invention patent application after publication |