CN102735156A - Gravity type piezoelectric sheet erosion monitoring device - Google Patents
Gravity type piezoelectric sheet erosion monitoring device Download PDFInfo
- Publication number
- CN102735156A CN102735156A CN2011100916813A CN201110091681A CN102735156A CN 102735156 A CN102735156 A CN 102735156A CN 2011100916813 A CN2011100916813 A CN 2011100916813A CN 201110091681 A CN201110091681 A CN 201110091681A CN 102735156 A CN102735156 A CN 102735156A
- Authority
- CN
- China
- Prior art keywords
- piezoelectric patches
- depth
- gravity rod
- gravity
- scour
- 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
Links
Images
Abstract
The invention provides a gravity type piezoelectric sheet erosion monitoring device which at least comprises a gravity rod. Each predetermined interval of the gravity rod is fixedly provided with a piezoelectric sheet. The gravity rod is internally embedded with an information transmission part which is connected with piezoelectric sheets and transmits voltage signals of the piezoelectric sheets. Inner side openings of two confining members are relative and form a guide groove, a predetermined space is arranged between the two inner side openings, and the gravity rod and the piezoelectric sheets go through the guide groove and the predetermined space and slide in a vertical direction. One end of each of a plurality of cantilevers is fixedly arranged at outer sides of the two confining members, and the other end of each of the cantilevers is arranged at a predetermined position respectively. A resistance ruler is connected with the gravity rod through a ruler shaft. A receiving mechanism is connected with the resistance ruler through a conducting wire and is connected with the information transmission part through a signal line respectively. According to the invention, construction is convenient and cost is low, the device is suitable for being applied to monitor an erosion depth, a water level and a back-silting condition, a riverbed erosion depth can be directly interpreted through obtained data, the data is transmitted back in real time, and the remote monitoring is realized.
Description
Technical field
The present invention is relevant for a kind of gravity type piezoelectric patches flushing monitoring device, and outstanding reference and a kind of can being installed in simultaneously on a plurality of bridge piers mean especially and need not excavate the riverbed and can measure the flushing monitoring device that back-silts and change.
Background technology
Since bridge generation disaster or promptly will collapse before many under the bad weather situation; The situation that is difficult for learning bridge pier and current for fear of this moment by observation; Therefore utilize the exposed degree of depth of monitoring instrument monitoring bridge pier of river-bed scouring depth; Can be easier under atrocious weather, understand actual state, not only can also an important parameters be provided for the exposed degree issue alert news of bridge pier for the formula that washes away of setting up or revise this basin.When washing away formula and can estimate the scour depth that its rainfall maybe be corresponding in certain basin exactly, the supvr of bridge just can carry out reinforcement or envelope bridge for specific bridge in torrential rain forecast issue back, and then to the people's also many a guarantees of life security.
In at present numerous channel scour monitoring instruments, when installing, most monitoring instrument all must excavate the riverbed, and its construction funds and difficulty all can produce the problem that some can't be expected with the difference of the condition that lands, and excavation runs into gravel bed etc. such as.The fiber scour monitoring of for example being developed in the big research team of TaiWan, China platform; Though it can accomplish more comprehensive monitoring; Only count involving great expense because of the fiber scour monitoring, and need excavation construction, the many uncertain factors in building site also can cause construction cost to improve and progress falls behind.Piezoelectric patches flushing monitoring meter and for example shown in Figure 4; Though be the simple flushing monitoring device of a practicality and principle,, be installed in the river course when washing away meter precisely because maximum shortcoming is the complicacy of installing; Or be to be covered with on the riverbed of gravel; All make the excavation step of burying engineering underground become very difficult, cost and duration also can increase thereupon, have lost on the contrary and have designed the cheap and simple original meaning of measurement of piezoelectricity chip flushing monitoring timing material originally.
In addition; Another kind of gravity type flushing monitoring meter then is the monitoring meter that minority need not excavated the riverbed in the existing flushing monitoring device; As shown in Figure 5, the detecting bar that its utilization is placed on the riverbed falls the scour depth that the degree of depth gets, precisely because shortcoming system can't record the back-silt degree of depth and height of water level; And must regularly utilize manual type that gravity rod is extracted out, in order to avoid the influence of back-silting measures the accuracy of scour depth.
Because the piezoelectric patches flushing monitoring is counted the variation person that minority can measure river-bed scouring depth and back-silt, precisely because need the excavation riverbed; Gravity type flushing monitoring meter then is at present uniquely when installing, need not excavate the riverbed; And can directly on decking, carry out the constructor; Precisely because need regularly gravity rod to be extracted out; So, general can't meet user required when reality is used with the person, reality is necessary to develop need not be excavated the riverbed and can measure that the tool of the variation of back-silting is durable, the novel flushing monitoring meter of economic benefit.
Summary of the invention
Fundamental purpose of the present invention is; Overcome the problems referred to above that known skill meets with and a kind of easy construction and inexpensive are provided, can be installed in simultaneously on a plurality of bridge piers, be fit to be applied to the situation of monitoring scour depth, water level and back-silting; The degree of depth of the direct interpretation channel scour of data that can gained; Need be via complex processing, and can cooperate wireless transmission will monitor ground data in real time passback, to reach the gravity type piezoelectric patches flushing monitoring device of long distance monitoring.
For reaching above purpose, a kind of gravity type piezoelectric patches of the present invention flushing monitoring device, it can be installed on a plurality of bridge piers simultaneously, is fit to be applied to the situation of monitoring scour depth, water level and back-silting, and can cooperates wireless transmission will monitor ground data in real time passback, and it comprises:
Several piezoelectric patches can produce a voltage signal, and pass out through a RCA when this piezoelectric patches is impacted in current shifting;
One gravity rod; The one of which end is conflicted on the riverbed; The other end then extends upward towards vertical direction, and is installed with a piezoelectric patches in each predetermined space place of this gravity rod, and is embedded with the information conveyance portion that is connected and transmits its voltage signal with those piezoelectric patches in this gravity rod;
Two confinement structures; Be the H section steel beam; And when setting up, this two confinement structures inside is pressed from both sides into a guide groove relatively, has preset space length between this two inside; By fixing two confinement structures of several affixed assemblies at bridge pier upper end and lower end position place, this guide groove and preset space length partly supply this gravity rod and on piezoelectric patches pass and do vertical direction and slide;
Several cantilevers, one of which end are installed in this two confinement structure outside, and the other end is fixedly arranged on the precalculated position of bridge pier, in order to fixing this two confinement structure and keep this gravity rod and on piezoelectric patches can in this guide groove, make vertical direction and slide;
One resistance scale is to see through a chi axle to be connected with this gravity rod, and in order to detect the position of this gravity rod, the length that the chi axle of this resistance scale of mat is stretched records the current degree of depth of washing away, and is converted into a position detecting signal; And
One receiving mechanism; System sees through a lead respectively and is connected with this resistance scale; And see through this RCA and be connected with this information conveyance portion; And this receiving mechanism comprises a data acquisition portion and a Network Transmission portion, can be when the running of this resistance scale synchronous pick-up and export the position detecting signal of this chi axle tensile elongation, and when this piezoelectric patches reaction synchronous pick-up and export the voltage signal of the piezoelectric patches position that this generations responds to; Collect the depth location of each signal by this data acquisition portion, and this Network Transmission portion of seeing through is sent to the long distance monitoring that long-range data processing equipment carries out signal with the flushing monitoring data via wireless network with direct interpretation channel scour face.
This gravity rod is with the piezoelectric patches interlock on it.
This gravity rod is made up of the stainless steel of high rigidity and high mechanical properties.
This gravity rod lower end comprises one toward radially enlarged abutting part.
Said gravity type piezoelectric patches flushing monitoring device utilizes the signal of this resistance scale and this piezoelectric patches to come the depth location of interpretation channel scour face, and its principle of operation comprises:
(A) when this gravity rod descends because of bed elevation reduces, being connected on this gravity rod resistance scale can be by to stretched, and the length that is stretched by its chi axle obtains the height of bed elevation decline, in the hope of current scour depth;
(B) when this piezoelectric patches of water impact, this piezoelectric patches along with current shifting to produce voltage signal, not being immersed in piezoelectric patches in the water does not then have signal and produces, in the hope of the current water level degree of depth; And
(C) produce when back-silting and cause this gravity rod to be embedded in the soil; Forming the scour depth that this resistance scale measures is that real scour depth adds when back-silting the degree of depth; Utilize the voltage signal of this piezoelectric patches to judge that this gravity rod is embedded in the degree of depth of back-silting in the soil; Deduct the degree of depth of back-silting with the scour depth that this resistance scale was measured again, be the scour depth of current reality via the voltage signal gained of this piezoelectric patches.
Compared with prior art; The beneficial effect that the present invention had is: the present invention combines traditional gravity type flushing monitoring to take into account both advantages of piezoelectricity chip flushing monitoring meter; And have easy construction and need not excavate the riverbed compared to conventional piezoelectric chip flushing monitoring meter, even installation position can also utilize crane from abutment, workmen and material to be winched to construction under the bridge floor in the middle of the river course; Then having compared to traditional gravity type flushing monitoring meter does not need regularly gravity rod is extracted out, can learn the degree of depth of back-silting by reading the piezoelectric patches signal, utilizes the resistance scale reading to deduct the degree of depth of back-silting again and is actual scour depth.
Description of drawings
Fig. 1 is the assembling synoptic diagram of preferred embodiment of the present invention.
Fig. 2 is the amplification schematic top plan view of A part among Fig. 1.
Fig. 3 A is the use aspect synoptic diagram of riverbed of the present invention normal state.
Fig. 3 B is the use aspect synoptic diagram after the channel scour of the present invention.
Fig. 3 C is the use aspect synoptic diagram after riverbed of the present invention back-silts.
Fig. 4 is traditional piezoelectric patches flushing monitoring meter synoptic diagram.
Fig. 5 is traditional gravity type flushing monitoring meter synoptic diagram.
Label declaration:
Gravity type piezoelectric patches flushing monitoring device 1;
RCA 111;
Abutting part 121;
Information conveyance portion 122;
Guide groove 131;
Preset space length 132;
Affixed assembly 133;
Chi axle 151;
Riverbed 20;
Pier cap 22;
Pile cover 23;
Data processing equipment 3.
Embodiment
See also Fig. 1 and shown in Figure 2, be respectively the amplification schematic top plan view of A part among assembling synoptic diagram and Fig. 1 of preferred embodiment of the present invention.As shown in the figure: the present invention is a gravity type piezoelectric patches flushing monitoring device 1; At least comprise several piezoelectric patches 11, a gravity rod 12, two confinement structures 13, several cantilevers 14, a resistance scale 15 and 16 formations of a receiving mechanism; System can be installed on a plurality of bridge piers 21 simultaneously; Be fit to be applied to the situation of monitoring scour depth, water level and back-silting, and can cooperate wireless transmission will monitor ground data in real time passback.
The situation that the above-mentioned piezoelectric patches of carrying 11 can measure scour depth, water level and back-silt can produce a voltage signal when this piezoelectric patches 11 is impacted in current shifting, and can be passed to this receiving mechanism 16 through a RCA 111.
This gravity rod 12 is made up of the stainless steel of high rigidity and high mechanical properties; The one of which end has one toward radially enlarged abutting part 121, and in order to conflict on riverbed 20, the other end then extends upward towards vertical direction; And be installed with a piezoelectric patches 11 in each predetermined space place of this gravity rod 12; Can wherein, be embedded with the information conveyance portion 122 that is connected and transmits its voltage signal with those piezoelectric patches 11 in this gravity rod 12 at the interlock together that hangs down when falling.
This two confinement structure 13 is the H section steel beam; And when setting up; These two confinement structures, 13 inside are pressed from both sides into a guide groove 131 relatively; Between the two and have a preset space length 132, by several affixed assemblies 133 fixing two confinement structures 13 in pier cap 22 positions of bridge pier 21 upper ends and pile cover 23 positions of lower end, in order to do supply with this guide groove 131 and preset space length 132 parts this gravity rod 12 and on piezoelectric patches 11 pass and do vertical direction and slide.
Each cantilever 14 1 end is installed in this two confinement structures, 13 outsides; The other end is fixedly arranged on the precalculated position of bridge pier 21, in order to fixing this two confinement structure 13 and keep this gravity rod 12 and on piezoelectric patches 11 can in this guide groove 131, make vertical direction and slide.
This resistance scale 15 sees through a chi axle 151 and is connected with this gravity rod 12, and in order to detect the position of this gravity rod 12, the length that the chi axle 151 of this resistance scale 15 of mat is stretched records the current degree of depth of washing away, and is converted into a position detecting signal.
This receiving mechanism 16 is to see through a lead respectively to be connected with this resistance scale 15; And see through this RCA 111 and be connected with this information conveyance portion 122; And comprise a data acquisition portion 161 and a Network Transmission portion 162; Can be when 15 runnings of this resistance scale synchronous pick-up and export the position detecting signal of these chi axle 151 tensile elongations; And when 11 reactions of this piezoelectric patches synchronous pick-up and export the voltage signal of piezoelectric patches 11 positions that this generations responds to; Collect the depth location of each signal by this data acquisition portion 161, and this Network Transmission portion 162 of seeing through is sent to the long distance monitoring that long-range data processing equipment 3 carries out signal with the flushing monitoring data via wireless network with direct interpretation channel scour face.
When utilization; Its principle of operation system utilizes this resistance scale 15 and the signal of this piezoelectric patches 11 to calculate the degree of depth of washing away; When this gravity rod 12 descends because of riverbed 20 elevations reduce; The resistance scale 15 that is connected on this gravity rod 12 is understood quilt to stretched, and the length that is stretched by its chi axle 151 can obtain the height that riverbed 20 elevations descend; When this piezoelectric patches 11 of water impact, this piezoelectric patches 11 along with current shifting to produce voltage signal, the piezoelectric patches 11 that is not immersed in the water does not then have the signal generation.When this gravity rod 12 is not embedded in the soil as yet, can't learn the degree of depth of washing away by the voltage signal of this piezoelectric patches 11, only can try to achieve the degree of depth of current water level; And the generation of ought back-silting causes this gravity rod 12 to be embedded in the soil; Forming the scour depth that this resistance scale 15 measured is that real scour depth adds when back-silting the degree of depth; Utilize the voltage signal of this piezoelectric patches 11 to judge that this gravity rod 12 is embedded in the degree of depth of back-silting in the soil; The scour depth that is measured with this resistance scale 15 again deducts the degree of depth of back-silting via the voltage signal gained of this piezoelectric patches 11, is the scour depth of current reality.
See also shown in Fig. 3 A～Fig. 3 C, be respectively the use aspect synoptic diagram after use aspect synoptic diagram and riverbed of the present invention after the use aspect synoptic diagram of riverbed of the present invention normal state, the channel scour of the present invention back-silts.As shown in the figure: in a preferred embodiment, the user mode that gravity type piezoelectric patches flushing monitoring device 1 of the present invention is disposed at the river course is shown in Fig. 3 A, and its gravity rod 12 can hang on riverbed 20 because of gravitate; When flood causes washing away of riverbed 20 temporarily, make riverbed 20 elevations reduce; Shown in Fig. 3 B, this device 1 also can and descend along with the reduction of riverbed 20 elevations, and the length that is stretched by its resistance scale 15 obtains the current degree of depth of washing away; And after flood is decorporated, if the quantity of sand and mud that this place's river is taken away less than the silt amount, then can begin to produce alluvial and make riverbed 20 elevations increase; Cause this device 1 to be embedded in the soil; Shown in Fig. 3 C, be that the length that this resistance scale 15 capable of using stretches deducts the degree of depth of back-silting this moment, is scour depth.
The present invention is the exploitation of gravity type piezoelectric patches flushing monitoring device (as shown in Figure 1); Bind and close traditional gravity type flushing monitoring and take into account both advantages of piezoelectricity chip flushing monitoring meter; And have easy construction and need not excavate the riverbed compared to conventional piezoelectric chip flushing monitoring meter, even installation position can also utilize crane from abutment, workmen and material to be winched to construction under the bridge floor in the middle of the river course; Then having compared to traditional gravity type flushing monitoring meter does not need regularly gravity rod is extracted out, can learn the degree of depth of back-silting by reading the piezoelectric patches signal, utilizes the resistance scale reading to deduct the degree of depth of back-silting again and is actual scour depth.
By this, this device is that unique riverbed that need not excavate can measure the monitoring device that back-silts and change, and its advantage is:
Easy construction;
With low cost, can be installed on a plurality of bridge piers simultaneously;
Data are the degree of depth of interpretation channel scour directly, need be via complex processing; And
Because data are simple, therefore can use wireless transmission will monitor the data in real time passback on ground.
Hence one can see that, and gravity type piezoelectric patches flushing monitoring device of the present invention has durable economic benefit, can be by the transmission of wireless network; Monitoring ground flushing monitoring data are returned via network at a high speed; Cooperate long-range data processing equipment, make the monitoring personnel can other place outside bridge reach the purpose of real-time monitoring, for example can be at long-range master-control room; Monitor the bridge that monitoring device is installed of having jurisdiction in real time; Carry out the long distance of signal and monitor in real time,, can repair the work of robbing calamity bridge issue warning, the Feng Qiaoyu that damages if be arranged at the unit of taking precautions against natural calamities.
In sum; The present invention is a kind of gravity type piezoelectric patches flushing monitoring device, can effectively improve the various shortcoming of usefulness, its easy construction and inexpensive; Can be installed on a plurality of bridge piers simultaneously; Be fit to be applied to the situation of monitoring scour depth, water level and back-silting, and can cooperate wireless transmission will monitor ground data in real time passback and reach the long distance human observer, so make generation of the present invention can more progressive, more practical, more meet user's institute must; Really met the important document of application for a patent for invention, the whence proposes patented claim in accordance with the law.
Claims (4)
1. gravity type piezoelectric patches flushing monitoring device, it can be installed on a plurality of bridge piers simultaneously, is fit to be applied to the situation of monitoring scour depth, water level and back-silting, and can cooperates wireless transmission will monitor ground data in real time passback, it is characterized in that comprising:
Several piezoelectric patches can produce a voltage signal, and pass out through a RCA when this piezoelectric patches is impacted in current shifting;
One gravity rod; The one of which end is conflicted on the riverbed; The other end then extends upward towards vertical direction, and is installed with a piezoelectric patches in each predetermined space place of this gravity rod, and is embedded with the information conveyance portion that is connected and transmits its voltage signal with those piezoelectric patches in this gravity rod;
Two confinement structures; Be the H section steel beam; And when setting up, this two confinement structures inside is pressed from both sides into a guide groove relatively, has preset space length between this two inside; By fixing two confinement structures of several affixed assemblies at bridge pier upper end and lower end position place, this guide groove and preset space length partly supply this gravity rod and on piezoelectric patches pass and do vertical direction and slide;
Several cantilevers, one of which end are installed in this two confinement structure outside, and the other end is fixedly arranged on the precalculated position of bridge pier, in order to fixing this two confinement structure and keep this gravity rod and on piezoelectric patches can in this guide groove, make vertical direction and slide;
One resistance scale is to see through a chi axle to be connected with this gravity rod, and in order to detect the position of this gravity rod, the length that the chi axle of this resistance scale of mat is stretched records the current degree of depth of washing away, and is converted into a position detecting signal; And
One receiving mechanism; System sees through a lead respectively and is connected with this resistance scale; And see through this RCA and be connected with this information conveyance portion; And this receiving mechanism comprises a data acquisition portion and a Network Transmission portion, can be when the running of this resistance scale synchronous pick-up and export the position detecting signal of this chi axle tensile elongation, and when this piezoelectric patches reaction synchronous pick-up and export the voltage signal of the piezoelectric patches position that this generations responds to; Collect the depth location of each signal by this data acquisition portion, and this Network Transmission portion of seeing through is sent to the long distance monitoring that long-range data processing equipment carries out signal with the flushing monitoring data via wireless network with direct interpretation channel scour face.
2. gravity type piezoelectric patches flushing monitoring device according to claim 1 is characterized in that this gravity rod is made up of stainless steel.
3. gravity type piezoelectric patches flushing monitoring device according to claim 1 is characterized in that, this gravity rod lower end comprises one toward radially enlarged abutting part.
4. gravity type piezoelectric patches flushing monitoring device according to claim 1 is characterized in that, utilizes the signal of this resistance scale and this piezoelectric patches to come the depth location of interpretation channel scour face, and its principle of operation comprises:
(A) when this gravity rod descends because of bed elevation reduces, being connected on this gravity rod resistance scale can be by to stretched, and the length that is stretched by its chi axle obtains the height of bed elevation decline, in the hope of current scour depth;
(B) when this piezoelectric patches of water impact, this piezoelectric patches along with current shifting to produce voltage signal, not being immersed in piezoelectric patches in the water does not then have signal and produces, in the hope of the current water level degree of depth; And
(C) produce when back-silting and cause this gravity rod to be embedded in the soil; Forming the scour depth that this resistance scale measures is that real scour depth adds when back-silting the degree of depth; Utilize the voltage signal of this piezoelectric patches to judge that this gravity rod is embedded in the degree of depth of back-silting in the soil; Deduct the degree of depth of back-silting with the scour depth that this resistance scale was measured again, be the scour depth of current reality via the voltage signal gained of this piezoelectric patches.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100916813A CN102735156A (en) | 2011-04-13 | 2011-04-13 | Gravity type piezoelectric sheet erosion monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100916813A CN102735156A (en) | 2011-04-13 | 2011-04-13 | Gravity type piezoelectric sheet erosion monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102735156A true CN102735156A (en) | 2012-10-17 |
Family
ID=46991100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011100916813A Pending CN102735156A (en) | 2011-04-13 | 2011-04-13 | Gravity type piezoelectric sheet erosion monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102735156A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864756A (en) * | 2012-09-10 | 2013-01-09 | 重庆交通大学 | Measuring and controlling method of maximal scouring depth of bridge abutment |
| CN105953765A (en) * | 2016-06-13 | 2016-09-21 | 衢州精筑能源科技有限公司 | Floating ball type water photovoltaic anti-sinking monitoring device and detection method thereof |
| CN107869950A (en) * | 2017-12-20 | 2018-04-03 | 南阳淅减汽车减振器有限公司 | A kind of damper piston pole length automatic detection device |
| CN108037010A (en) * | 2018-02-02 | 2018-05-15 | 曲伟松 | A kind of pier subsidence detection device and method |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334261A (en) * | 2007-06-28 | 2008-12-31 | 陈明正 | Monitoring device for monitoring river-bed scouring depth, remote automatic monitoring system and bridge |
| TW201040357A (en) * | 2009-05-06 | 2010-11-16 | Ceci Engineering Consultants Inc | The piezoeletric film-the scour monitor, monitoring method, and monitoring system |
-
2011
- 2011-04-13 CN CN2011100916813A patent/CN102735156A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101334261A (en) * | 2007-06-28 | 2008-12-31 | 陈明正 | Monitoring device for monitoring river-bed scouring depth, remote automatic monitoring system and bridge |
| TW201040357A (en) * | 2009-05-06 | 2010-11-16 | Ceci Engineering Consultants Inc | The piezoeletric film-the scour monitor, monitoring method, and monitoring system |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102864756A (en) * | 2012-09-10 | 2013-01-09 | 重庆交通大学 | Measuring and controlling method of maximal scouring depth of bridge abutment |
| CN105953765A (en) * | 2016-06-13 | 2016-09-21 | 衢州精筑能源科技有限公司 | Floating ball type water photovoltaic anti-sinking monitoring device and detection method thereof |
| CN107869950A (en) * | 2017-12-20 | 2018-04-03 | 南阳淅减汽车减振器有限公司 | A kind of damper piston pole length automatic detection device |
| CN107869950B (en) * | 2017-12-20 | 2023-11-21 | 南阳淅减汽车减振器有限公司 | Automatic detection device for length of piston rod of shock absorber |
| CN108037010A (en) * | 2018-02-02 | 2018-05-15 | 曲伟松 | A kind of pier subsidence detection device and method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Prendergast et al. | A review of bridge scour monitoring techniques | |
| Zhu et al. | Feasibility study of strain based stability evaluation of locally loaded slopes: Insights from physical and numerical modeling | |
| TW201035416A (en) | Method for evaluating bridge safety with vibration measurement | |
| CN103487373B (en) | slope crack monitoring device and measuring method thereof | |
| CN207244680U (en) | A kind of sunk bridge pile foundation washes away real-time monitoring system | |
| CN105887947A (en) | Deviation rectification method and device for pile foundation inclination | |
| CN202075836U (en) | Geological deformation and slip early warning system | |
| CN107460898A (en) | A kind of sunk bridge pile foundation washes away real-time monitoring system and its monitoring method | |
| CN103243747A (en) | Deviation rectifying method of prestressed concrete pipe pile foundation | |
| CN102788569A (en) | Geological deformation and slumping warning system | |
| CN102518106A (en) | Method for determining the lateral earth pressure based on the multi-functional piezocone penetration test probe | |
| CN102162234A (en) | Device and method for monitoring surface displacement of rock-soil body in real time | |
| CN202430702U (en) | Probe based on multifunctional piezocone penetration test | |
| CN102735156A (en) | Gravity type piezoelectric sheet erosion monitoring device | |
| CN108560525B (en) | Side slope protection monitoring devices's benchmark detects structure | |
| KR20100041996A (en) | Apparatus and method for measuring ground settlement of whole section | |
| KR101191131B1 (en) | Displacement measurement device of earth retaining temporary structure | |
| Budge et al. | Instrumentation and early performance of a large-grade grs-ibs wall | |
| Tornborg et al. | Permanent sheet pile wall in soft sensitive clay | |
| CN106643649A (en) | Method and device for measuring deep soil settlement and pore water pressure | |
| KR100991867B1 (en) | Method for measuring bridge scour using optical fiber sensor | |
| CN207452602U (en) | Both wired temperature pier structure of existing railway roadbed is worn under a kind of | |
| CN202073083U (en) | Real-time monitoring device for surface displacement of rock soil body | |
| Dasenbrock et al. | Real-time structural health monitoring of landslides and geotechnical assets with ShapeAccelArrays | |
| Abdoun et al. | Real-time construction monitoring with a wireless shape-acceleration array system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20121017 |