CN105823588B - A kind of impact force testing device for slope model test - Google Patents
A kind of impact force testing device for slope model test Download PDFInfo
- Publication number
- CN105823588B CN105823588B CN201610246941.2A CN201610246941A CN105823588B CN 105823588 B CN105823588 B CN 105823588B CN 201610246941 A CN201610246941 A CN 201610246941A CN 105823588 B CN105823588 B CN 105823588B
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- Prior art keywords
- bearing net
- impact force
- strain gauge
- testing device
- force testing
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0052—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes measuring forces due to impact
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/24—Earth materials
Abstract
The invention discloses a kind of impact force testing devices for slope model test, including the system of being hit and computer control platform, the system of being hit includes bearing net and bracket, bearing net is mounted vertically on bracket, the grid line infall of bearing net is provided with several strain gauges, and multiple strain gauges are evenly distributed on bearing net, each strain gauge passes through cable and connect with computer control platform.1) structure is simple, easy to assembly, easily operated, and whole device intensity is sufficiently large, is capable of going on smoothly for guarantee test.2) dynamic change that can intuitively observe the slip mass of landslide generating process and the downslide impact force under real-time display slip mass different situations, provide reliable guarantee for final test.
Description
Technical field
The present invention relates to a kind of impact force testing devices for slope model test.
Background technique
Landslide is the slope under certain natural conditions, due to river degradation, artificial blending rock, groundwater activities or earthquake etc. because
The influence of element, makes the part soil body or rock mass under the effect of gravity, and along certain Weak face or glide band, whole or part is with water
Metaboly based on prosposition shifting.As a kind of serious geological disaster, slip mass usually suspends traffic, occupies river, destroys
Factories and miness bury villages and small towns, cause disaster.Since landslide distribution is wide, occurs frequently, Production conditions complexity, influencing factor is many
It is more, occur and diversity, variability and the complexity of movement mechanism make prediction difficulty, control expense expensive, thus the machine that comes down
Reason and prevention and treatment are always that one of geology and engineering problem of research are puted forth effort by China.With the development of the social economy, construction scale
Expand, is lost caused by landslide disaster also more and more greatly, in particular with works such as railway in recent years and highway and water conservancies
The Large scale construction of journey forms a high-incidence season on landslide.China is every year because of landslide disaster loss about 20~3,000,000,000 according to estimates
Member.Landslide disaster causes huge economic losses, therefore carries out research to landslide and prevention and treatment is of great significance.
Currently, the method studied landslide is mainly Numerical Simulation and model test.Numerical Simulation side
And small investment, but correct selection of its precision dependent on parameters such as calculation of boundary conditions, soil body physico mechanical characteristics just.And model
Test can contain much information according to the specific setting of research, is with a high credibility, can also verify Numerical Simulation.Currently, landslide mould
The theoretical research of type test is gradually paid attention to, and slope model test is also widely used.Slope model test is known as grinding
One of the effective means for studying carefully landslide mechanism and prevention and treatment, also increasingly shows important role in research on landslide field.It is grinding
During studying carefully preventing land slide, the impact force for downslide of coming down be Study of Landslides prevention and treatment important content, at present it is not yet found that with
It is the size that can test impact force in slope model test, urgent need invents one kind in the test device for the lower gliding mass impact force that comes down
Come down impact force testing device.
Summary of the invention
The purpose of the invention is to overcome above-mentioned the deficiencies in the prior art, a kind of rushing for slope model test is provided
Force test device is hit, this apparatus structure is simple, and it is easy to assembly, it is easily operated, it can intuitively observe the dynamic of landslide generating process
State feature, and the size that impact force is caused on landslide can be tested, guarantee going on smoothly for model test.
To achieve the above object, the present invention adopts the following technical solutions:
A kind of impact force testing device for slope model test, including be hit system and computer control platform,
The system of being hit includes bearing net and bracket, and bearing net is mounted vertically on bracket, and the grid line infall of bearing net is provided with
Several strain gauges, and multiple strain gauges are evenly distributed on bearing net, each strain gauge pass through cable with
The connection of computer control platform.
Load-carrying members use reticular structure, and mud is facilitated to pass through, and the stress measured in this way is more acurrate, and load-carrying members use
Reticular structure can reuse, and entity cannot be reused after blastic deformation, and infall area is big, and laying is facilitated to pass
Sensor is uniformly distributed the variation of stress that can collect a section or sustained height, facilitates analysis.
Strain gauge is uniformly laid in entire section, facilitates the feature for comprehensively understanding landslide, is ground with forefathers
Study carefully and compare, closer with engineering practice, the research achievement obtained is significant for the prevention and treatment of landslide disaster.
Preferably, the bracket includes pedestal and two vertical supporting bars being mounted on the base, and the two of the bearing net
End is separately fixed on two vertical supporting bars, and bearing net is made to be in the state vertically opened.
It is further preferred that the distance between two vertical supporting bars are adjustable.
Preferably, the grid line cross-distribution of the bearing net, the distance between adjacent intersections are 10-30cm.
Preferably, the computer control platform includes real-time displaying device, and real-time displaying device and strain gauge connect
It connects.
The data that strain gauge measures can be shown by real-time displaying device, can be real-time by the data measured
It is displayed on the screen, for experimenter's observation analysis.
Preferably, the infall of each grid line of bearing net is respectively and fixedly provided with a strain gauge.
Preferably, the bearing net is in straight condition, guarantees that there is bearing net enough area can take on landslide
Body.
Preferably, it is securely fixed between the strain gauge and bearing net, does not fall out it in knockout process.
The application method of the above-mentioned impact force testing device for slope model test, includes the following steps:
1) all parts of impact force testing device are installed, strain gauge is fixed on bearing net, make to answer
It is fixedly secured between force snesor and bearing net, is unlikely to fall off；
2) strain gauge is connect with computer control platform；
3) landslide test is carried out, the impact force of slip mass in impact force testing device measurement process of landslides is used.
Preferably, in step 2), after strain gauge is connect with computer control platform, guarantee cable is neat, stress passes
The sensitivity of sensor and the intensity of whole device.
Advantageous effects of the invention are as follows:
1) structure is simple, easy to assembly, easily operated, and whole device intensity is sufficiently large, be capable of guarantee test it is smooth into
Row.
2) dynamic change and real-time display slip mass that can intuitively observe the slip mass of landslide generating process are not
With the downslide impact force in situation, reliable guarantee is provided for final test.
3) load-carrying members use reticular structure, facilitate mud to pass through, the stress measured in this way is more acurrate, infall area
Greatly, facilitate laying sensor, be uniformly distributed the variation of stress that can collect a section or sustained height, it is convenient to divide
Analysis.
Detailed description of the invention
Fig. 1 is the landslide impact force testing device structural schematic diagram for model test.
Wherein, 1, pedestal；2, metallic rod；3, steel mesh；4, optical fiber stress sensor；5, real-time displaying device；6, computer
Control platform.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and examples.
The invention will be further described with attached drawing With reference to embodiment.
As shown in figure 1, a kind of impact force testing device for slope model test, including be hit system and computer control
Platform 6 processed, the system of being hit include bearing net and bracket, and bearing net is mounted vertically on bracket, and the grid line of bearing net intersects
Place is provided with several strain gauges, and multiple strain gauges are evenly distributed on bearing net, and each strain gauge is logical
Cable is crossed to connect with computer control platform 6.The strain gauge is light strain gauge 4.
Strain gauge is uniformly laid in entire section, facilitates the feature for comprehensively understanding landslide, is ground with forefathers
Study carefully and compare, closer with engineering practice, the research achievement obtained is significant for the prevention and treatment of landslide disaster.
The bracket includes pedestal and two vertical supporting bars being mounted on the base, and the both ends of the bearing net are solid respectively
It is scheduled on two vertical supporting bars, bearing net is made to be in the state vertically opened.The bearing net is steel mesh 3, vertical supporting bar
For metallic rod 2.
The distance between two vertical supporting bars are adjustable.Two vertical supporting bars can be fixed on the same pedestal, branch
Be provided with guide rail between strut and pedestal, vertical supporting bar moved along guide rail, between adjustable vertical supporting bar away from
From.
Two vertical supporting bars can also be fixed on different pedestals, by moving pedestal, can control adjustment two
The distance between vertical supporting bar.
, can be with the area of appropriate adjustment bearing net after adjusting the distance between two vertical supporting bars, and then adapt to not
Same test model.
The grid line of the bearing net is arranged in a crossed manner, and the distance between adjacent net winding thread is 10-30cm.
The computer control platform includes real-time displaying device 5, and real-time displaying device 5 is connect with strain gauge.
The data that strain gauge measures can be shown by real-time displaying device, can be real-time by the data measured
It is displayed on the screen, for experimenter's observation analysis.
The infall of each grid line of bearing net is respectively and fixedly provided with a strain gauge.
The bearing net is in straight condition, guarantees that there is bearing net enough area can take on slip mass.
It is securely fixed between the strain gauge and bearing net, does not fall out it in knockout process.
The test device is rigid rack.
The assembling and application method of the above-mentioned landslide impact force testing device for model test, comprising the following steps:
A. the installation that advanced luggage is set welds together pedestal 1 and metallic rod 2, and the rack of pedestal 1 and model test is logical
It crosses and is bolted, both ends are symmetrical arranged.
B. the sufficiently large steel mesh 3 of selection intensity between the intensive metallic rod 2 for being arranged in both ends, is connected by welding, steel
Net 3 is in straight condition, is guaranteed at same plane, and area will take on slip mass enough.
C., optical fiber stress sensor 4 is uniformly arranged in the intersection of steel mesh 3, it is noted that tight with steel mesh 3 when laying
Close connection is unlikely to fall, and tenacity viscose, which can be used, fixes it.
D. optical fiber stress sensor 4 connect by cable with real-time displaying device 5, guarantee cable neatly, the spirit of sensor
The intensity of sensitivity and whole device.
E. landslide test is carried out, using the impact force of slip mass in the device to test process of landslides, whole process can lead to
It crosses computer control platform 6 and carries out operation control.
Above-mentioned, although the foregoing specific embodiments of the present invention is described with reference to the accompanying drawings, not to invention protection scope
Limitation, those skilled in the art should understand that, based on the technical solutions of the present invention, those skilled in the art are not required to
It is still within the scope of the present invention to make the creative labor the various modifications or changes that can be made.
Claims (6)
1. a kind of impact force testing device for slope model test, it is characterised in that: including the system of being hit and computer
Control platform, the system of being hit include bearing net and bracket, and bearing net is mounted vertically on bracket, and the grid line of bearing net intersects
Place is provided with several strain gauges, and multiple strain gauges are evenly distributed on bearing net, and each strain gauge is logical
Cable is crossed to connect with computer control platform；
The grid line of the bearing net is arranged in a crossed manner, and the distance between adjacent net winding thread is 10-30cm；
The computer control platform includes real-time displaying device, and real-time displaying device is connect with strain gauge；
The infall of each grid line of bearing net is respectively and fixedly provided with a strain gauge；
The bearing net is in straight condition, guarantees that there is bearing net enough area can take on slip mass.
2. impact force testing device according to claim 1, it is characterised in that: the bracket includes pedestal and is mounted on bottom
Two vertical supporting bars on seat, the both ends of the bearing net are separately fixed on two vertical supporting bars, are in bearing net
Open tensional state.
3. impact force testing device according to claim 2, it is characterised in that: the distance between two vertical supporting bars can
It adjusts.
4. impact force testing device according to claim 1, it is characterised in that: between the strain gauge and bearing net
It securely fixes, does not fall out it in knockout process.
5. the application method of any impact force testing device for slope model test of claim 1-4, feature exist
In: include the following steps:
1) all parts of impact force testing device are installed, strain gauge is fixed on bearing net, pass stress
It is fixedly secured between sensor and bearing net, is unlikely to fall off；
2) strain gauge is connect with computer control platform；
3) landslide test is carried out, the impact force of slip mass in impact force testing device measurement process of landslides is used.
6. application method according to claim 5, it is characterised in that: in step 2), strain gauge and computer are controlled
After platform connection, guarantee the intensity of neat cable, the sensitivity of strain gauge and whole device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610246941.2A CN105823588B (en) | 2016-04-20 | 2016-04-20 | A kind of impact force testing device for slope model test |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610246941.2A CN105823588B (en) | 2016-04-20 | 2016-04-20 | A kind of impact force testing device for slope model test |
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| CN105823588B true CN105823588B (en) | 2019-01-22 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107023301B (en) * | 2017-05-23 | 2019-03-12 | 山东大学 | For studying the model test apparatus and method of Tunnel Engineering blast simulated acid rain |
| CN107014328B (en) * | 2017-05-25 | 2023-09-26 | 北京中船信息科技有限公司 | Surface inhaul cable force measuring type geological disaster automatic monitoring device and method |
| CN108168822A (en) * | 2017-12-12 | 2018-06-15 | 山东大学 | Rockfall safeguard structure percussion lower stress monitoring model pilot system and method |
| CN111766132A (en) * | 2020-07-15 | 2020-10-13 | 华北水利水电大学 | Metal mesh tensile quality detection device and operation method thereof |
| CN112556965A (en) * | 2020-11-26 | 2021-03-26 | 安徽多富士智慧物联科技有限公司 | Air duct cold state accurate detection device and detection method |
Citations (1)
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| CN103985225A (en) * | 2013-02-08 | 2014-08-13 | 同方威视技术股份有限公司 | Intelligent monitoring system for flexible passive protective net |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11160172A (en) * | 1997-12-02 | 1999-06-18 | Nippon Koei Co Ltd | Landslide monitoring device |
| CN202049011U (en) * | 2011-04-26 | 2011-11-23 | 中铁二院工程集团有限责任公司 | Fiber grating pull sensor for flexible rockfall protective net |
| CN103132468A (en) * | 2011-12-04 | 2013-06-05 | 西安金和光学科技有限公司 | Intelligent protection net |
| CN202869442U (en) * | 2012-09-04 | 2013-04-10 | 中铁二院工程集团有限责任公司 | Side slope and landslide integrated monitoring system |
| CN104132757B (en) * | 2014-08-14 | 2016-08-17 | 中国地质调查局水文地质环境地质调查中心 | Quasi-distributed landslide soil pressure real-time monitoring device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103985225A (en) * | 2013-02-08 | 2014-08-13 | 同方威视技术股份有限公司 | Intelligent monitoring system for flexible passive protective net |
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