CN103954738B - A kind of laboratory testing rig measuring soil body Vibration propagation characteristic - Google Patents
A kind of laboratory testing rig measuring soil body Vibration propagation characteristic Download PDFInfo
- Publication number
- CN103954738B CN103954738B CN201410128570.9A CN201410128570A CN103954738B CN 103954738 B CN103954738 B CN 103954738B CN 201410128570 A CN201410128570 A CN 201410128570A CN 103954738 B CN103954738 B CN 103954738B
- Authority
- CN
- China
- Prior art keywords
- soil body
- soil
- excitation
- experiment
- lateral support
- 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.)
- Active
Links
Landscapes
- Vibration Prevention Devices (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
Abstract
The invention discloses a kind of laboratory testing rig measuring soil body Vibration propagation characteristic, comprise: experiment driver unit and experiment implementation section, experiment driver unit comprises further: lateral support riser, top fixed cross beam, constant excitation device fixture, driver, excitation chain connection device, force snesor and excitation pad, excitation pad contacts with the soil body; Experiment implementation section comprises further: soil box, soil box stationary installation, vibration isolation and damping material, acceleration transducer, soil humidity measurement instrument and soil matrix compactness measuring apparatus.Test unit applicability of the present invention is strong, simple to operate, uses, installation and removal are convenient, and cost and usage charges cheap, be applicable to communications and transportation, building, high ferro, automobile and other industries field.
Description
Technical field
The present invention relates to a kind of laboratory testing rig measuring soil body Vibration propagation characteristic.
Background technology
Along with national economy sustained and rapid development, urbanization process is accelerated, and population is constantly to urban agglomerations, and city size also constantly expands, and even creates the megalopolis as Beijing and Shanghai.For meeting the normal travel requirement of people, each big city has built a large amount of rail line or heavy haul and rapid road one after another, and this brings huge facility to civic life, but various disadvantage also highlights thereupon.
One of them problem is, big city middle orbit traffic, heavy-duty vehicle travel the vibration caused, and creates significant adverse impact to the inhabitation of these traffic lines nearby urban crowds and working environment.Track traffic or heavily loaded wheeled vehicular traffic are because load is heavier, speed, and its ground vibration caused can make residential building on the way produce significantly long-time vibration sense after outwards propagating.
Have the community building that distance rail is nearer, when city railway vehicle passes through, 1-5 layer all can experience obvious floor and seat vibration, and this makes the comfortableness of living decline to a great extent.When heavy load vehicle travels on city underground or identitypath, neighboring buildings also can be subject to obvious vibration effect.Have the scientific research institutions be positioned near city underground to affect by Subway Vibration, subway by time multiple instrument and equipment be difficult to guarantee and carry out high precision work, affect normal experiment test and scientific research activity.
When bullet train runs, the vibration of the backward outer propagation of railway ground excited target, for plant produced near Along Railway and processing environment deleterious effects also clearly.No matter be that analysis is optimized to these vibration source systems (subway train, high-speed railway and automobile) or traffic route, still carry out vibration damping and vibration isolation system, all need the experimental simulation carrying out vibrating propagation characteristic in the soil body.
Outdoor site test faces a more difficult problem.The layout of experimental data collection point affects by architectural composition near sample plot, and the position of collection point is selected limited, is difficult to realize regular layouting, can not realizes the intensive collection for vibration signal.In addition, vibration stimulus source is difficult to control: be also difficult to prediction by the load situation of vehicle is uncontrollable; Uncontrollable by the actuation duration of vehicle; Be difficult to realize repeated sampling; Along with the change of weather, temperature, humidity, soil mass property also can be different.
For this reason, be sought after a kind of experimental provision that can vibrate propagation characteristic in the soil body at Indoor measurement, so that a series of given waveform, the effect of frequency load can be carried out in laboratory under, the experimental study of Vibration propagation characteristic in the soil body.This device should the load of implementation rule ripple and random wave random waveform and frequency load, to the effective intensive collection of vibration signal, sensor can as required flexible arrangement, soil body humidity and packing can detection and control, the functions such as experiment can be repeated.
Current indoor soil body experimental provision is mainly used in the characteristic such as intensity, this structure measuring soil, also lacks the device of measuring vibrations propagation characteristic.Therefore, in the urgent need to inventing a kind of general convenience, with low cost, the test unit of soil body Vibration propagation characteristic can be measured.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of laboratory testing rig measuring soil body Vibration propagation characteristic, carrys out the propagation of analog vibration ripple in the soil body.
A kind of laboratory testing rig measuring soil body Vibration propagation characteristic of the present invention comprises: experiment driver unit and experiment implementation section, and described experiment driver unit comprises further:
Lateral support riser, two lateral support risers are arranged on described experiment implementation section both sides;
Top fixed cross beam, is bolted and is fixed between two lateral support risers;
Constant excitation device fixture, is fixedly installed on below the fixed cross beam of top;
Driver, is arranged between constant excitation device fixture by secured adjusted bolt;
Excitation chain connection device, one end is connected to below driver by force snesor;
Excitation pad, is connected with the excitation chain connection device other end by excitation link end mechanism, and contacts with the soil body;
Described experiment implementation section comprises further:
Soil box, fills with the soil body in described soil box, is arranged between two lateral support risers;
Soil box stationary installation, is arranged on soil box two bottom sides and fixes soil box in track;
Vibration isolation and damping material, is arranged in sulculus that soil body surface offers;
Acceleration transducer, distribution is arranged on soil body surface, inserts inside soil body;
Soil humidity measurement instrument, distribution is arranged on soil body surface, inserts inside soil body;
Soil matrix compactness measuring apparatus, distribution is arranged on soil body surface, inserts inside soil body.
Preferably, described lateral support riser and top fixed cross beam, employing steel plate is material.
Technical scheme of the present invention has the following advantages:
(1) this experimental provision can provide the excitation load of stabilized frequency, can carry out vibration experiment within the scope of wider load frequency, and the adjustable frequency scope of electromagnetic loading device is: 2-2500Hz, can meet most simulated experiment requirement; For more low-frequency situation, in order to simulating signal more accurately, can electromagnetism loader be changed into hydraulic loading system.
(2) this device is by coordinating excitation signal generator, the exciting force of fixed size can be provided, and the loading soil body being carried out to random signal, spectrum signal can be realized, for point of excitation place by arranging an elongated rigid gasket, point loading can be converted to line load, carry out the Vibration Condition of simulating more accurately in Practical Project.
(3) arrangement of this device sensor can be arranged arbitrarily as required, can the difference of experimentally analog case, the quantity of reasonable arrangement sensor and layout type, and can realize the intensive collection for vibration signal.
(4) can experimentally requirement, the three-phase of the soil body is regulated, detection and control can be carried out to the humidity of the soil body and packing, can also experimentally need, adopt the soil property selecting different size particles, form different gradation, more accurately simulating actual conditions.
(5) correlative study carrying out soil body vibration damping, vibration isolation aspect further can be facilitated.This device according to different research needs, by test block soil body surface or some vibration dampings of internal placement, vibration isolation material, can play the effect suppressing vibration wave to transmit.
(6) this experimental provision applicability strong, be easy to dismounting, be convenient to need to reequip flexibly according to difference research, device is equipped with soil humidity measurement instrument and soil matrix compactness measuring apparatus, displacement transducer and force snesor, when being optimized for some performance in vibrational structure power system and assessing or the soil body carried out to vibration damping, vibration isolation control, this covering device is easy to operation, precision is higher.
(7) experimental provision mainly with organic glass and steel plate for raw material.In test unit cost, this experimental provision is well below traditional large-scale vibrating testing table (as earthquake simulation test platform), the operating cost of test is also quite cheap compared with other vibration table, is applicable to communications and transportation, building, high ferro, automobile and other industries field.
Accompanying drawing explanation
Fig. 1 is soil body Vibration propagation characteristic laboratory testing rig left view;
Fig. 2 is soil body Vibration propagation characteristic laboratory testing rig vertical view;
Fig. 3 is soil body Vibration propagation characteristic laboratory testing rig front view.
Embodiment
Experimental provision of the present invention is well positioned to meet kinds of experiments requirement, 5 points below demand fulfillment: one, can realize the external load excitation that optional frequency, arbitrary size are stable; Two, the loading of random signal, spectrum signal can be carried out to the soil body; Three, the arrangement of sensor can be arranged arbitrarily as required, can realize the intensive collection for vibration signal; Four, can experimentally requirement, the three-phase of the soil body is regulated, detection and control can be carried out to the humidity of the soil body and packing; Five, the correlative study carrying out soil body vibration damping, vibration isolation aspect further can be facilitated.Above this some all complete by this experimental provision.
Describe the present invention below in conjunction with accompanying drawing.
The laboratory testing rig of measurement soil body Vibration propagation characteristic of the present invention comprises experiment driver unit and experiment implementation section.
Experiment driver unit main body is made up of two lateral support risers 5 and top fixed cross beam 1, and wherein top fixed cross beam 1 is bolted and is fixed between two lateral support risers 5.The material of lateral support riser 5 and top fixed cross beam 1 adopts steel plate.
Top fixed cross beam 1 is arranged with constant excitation device fixture 3, and for constant excitation device 2, the two is connected by the secured adjusted bolt 4 of driver 2 both sides.
Driver 2 lower end is connected with excitation chain connection device 7 by force snesor 6, excitation chain connection device 7 other end is provided with excitation link end mechanism 8, be connected with excitation pad 9, the point loading of loader can well act on excitation pad 9 by such excitation link end mechanism 8, and point loading can be changed into uniform line load and act on the soil body 10 by elongated rigidity excitation pad 9 preferably.
Experiment implementation section mainly comprises the rectangular parallelepiped soil box 11 that fills with the soil body 10, and soil box 11 is fixed in track by soil box stationary installation 12.
The soil body 10 surface in soil box 11 offers a sulculus, is filled with vibration isolation and damping material 16 in sulculus.
Be furnished with several acceleration transducers 14 on the surface at the soil body 10, it is inner that soil humidity measurement instrument 13 and soil matrix compactness measuring apparatus 15 insert the soil body 10, thus measure and control humidity and the packing of the soil body, can better simulate actual soil characteristics.
A kind of attachment device implementation process measuring the laboratory testing rig of soil body Vibration propagation characteristic of the present invention is:
(1) when this device being produced, the higher steel plate of first-selected intensity and ensure welding after each surface evenness higher, the machining precision of all accessories of a whole set of experimental provision all will reach more than 0.5mm, on attachment device beat the high precision that screwhole position will ensure 0.1mm.
(2) install experiment driver unit and experiment implementation section successively respectively, and utilize laser level to ensure that two parts are orthogonal, ensure that track is smooth and not easily vibrate.
(3) groove of a square sectional is opened on the surface on the soil body 10, inserts vibration isolation and damping material 16, and by its compacting, surface keeps the same with the soil body 10 smooth.
(4) soil box 11 is fixed in track, to ensure when carrying out earth propagation vibration experiment, the vibration of soil box 11 can not be caused (if soil box 11 vibrates, the soil body 10 will to be driven conversely to vibrate, bring error and interference to experiment measuring, after soil box 11 is fixing, just can eliminate this interference).
(5) carrying out connection experiment driver unit and experiment implementation section by rotating loader, after being rotated in place, utilizing laser level to calibrate the position of loader end, ensureing that it is perpendicular to the soil body 10.In static equilibrium position, must ensure that loader is the pressured state of appropriateness, otherwise in dynamic load process, there will be excitation link end mechanism 8 and the disengaging of excitation pad 9, effective loading cannot be ensured.
(6) preferably sensor used is all connected with signal receiver, by comparatively ideal experimental result can be obtained to the comprehensive analysis of force signal, acceleration signal, humidity and packing information during experimental provision work.During the soil body 10 undesirable, simulating actual conditions accurately can also be carried out by the humidity and packing regulating the soil body 10.
Claims (2)
1. measure a laboratory testing rig for soil body Vibration propagation characteristic, it is characterized in that, comprising: experiment driver unit and experiment implementation section, described experiment driver unit comprises further:
Lateral support riser, two lateral support risers are arranged on described experiment implementation section both sides;
Top fixed cross beam, is bolted and is fixed between two lateral support risers;
Constant excitation device fixture, is fixedly installed on below the fixed cross beam of top;
Driver, is arranged between constant excitation device fixture by secured adjusted bolt;
Excitation chain connection device, one end is connected to below driver by force snesor;
Excitation pad, is connected with the excitation chain connection device other end by excitation link end mechanism, and contacts with the soil body;
Described experiment implementation section comprises further:
Soil box, fills with the soil body in described soil box, is arranged between two lateral support risers;
Soil box stationary installation, is arranged on soil box two bottom sides and fixes soil box in track;
Vibration isolation and damping material, is arranged in sulculus that soil body surface offers;
Acceleration transducer, distribution is arranged on soil body surface, inserts inside soil body;
Soil humidity measurement instrument, distribution is arranged on soil body surface, inserts inside soil body;
Soil matrix compactness measuring apparatus, distribution is arranged on soil body surface, inserts inside soil body.
2. the laboratory testing rig of measurement soil body Vibration propagation characteristic according to claim 1, it is characterized in that: described lateral support riser and top fixed cross beam, employing steel plate is material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128570.9A CN103954738B (en) | 2014-04-01 | 2014-04-01 | A kind of laboratory testing rig measuring soil body Vibration propagation characteristic |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410128570.9A CN103954738B (en) | 2014-04-01 | 2014-04-01 | A kind of laboratory testing rig measuring soil body Vibration propagation characteristic |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103954738A CN103954738A (en) | 2014-07-30 |
| CN103954738B true CN103954738B (en) | 2015-11-04 |
Family
ID=51332038
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410128570.9A Active CN103954738B (en) | 2014-04-01 | 2014-04-01 | A kind of laboratory testing rig measuring soil body Vibration propagation characteristic |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103954738B (en) |
Families Citing this family (33)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107271563B (en) * | 2017-08-21 | 2023-03-31 | 兰州交通大学 | Vibration isolator performance experiment device and method |
| US11589509B2 (en) | 2018-10-26 | 2023-02-28 | Deere & Company | Predictive machine characteristic map generation and control system |
| US11957072B2 (en) | 2020-02-06 | 2024-04-16 | Deere & Company | Pre-emergence weed detection and mitigation system |
| US11467605B2 (en) | 2019-04-10 | 2022-10-11 | Deere & Company | Zonal machine control |
| US11240961B2 (en) | 2018-10-26 | 2022-02-08 | Deere & Company | Controlling a harvesting machine based on a geo-spatial representation indicating where the harvesting machine is likely to reach capacity |
| US11079725B2 (en) | 2019-04-10 | 2021-08-03 | Deere & Company | Machine control using real-time model |
| US11178818B2 (en) | 2018-10-26 | 2021-11-23 | Deere & Company | Harvesting machine control system with fill level processing based on yield data |
| US11672203B2 (en) | 2018-10-26 | 2023-06-13 | Deere & Company | Predictive map generation and control |
| US11641800B2 (en) | 2020-02-06 | 2023-05-09 | Deere & Company | Agricultural harvesting machine with pre-emergence weed detection and mitigation system |
| US11234366B2 (en) | 2019-04-10 | 2022-02-01 | Deere & Company | Image selection for machine control |
| US11778945B2 (en) | 2019-04-10 | 2023-10-10 | Deere & Company | Machine control using real-time model |
| US11477940B2 (en) | 2020-03-26 | 2022-10-25 | Deere & Company | Mobile work machine control based on zone parameter modification |
| US11983009B2 (en) | 2020-10-09 | 2024-05-14 | Deere & Company | Map generation and control system |
| US11825768B2 (en) | 2020-10-09 | 2023-11-28 | Deere & Company | Machine control using a predictive map |
| US11895948B2 (en) | 2020-10-09 | 2024-02-13 | Deere & Company | Predictive map generation and control based on soil properties |
| US11871697B2 (en) | 2020-10-09 | 2024-01-16 | Deere & Company | Crop moisture map generation and control system |
| US11474523B2 (en) | 2020-10-09 | 2022-10-18 | Deere & Company | Machine control using a predictive speed map |
| US11927459B2 (en) | 2020-10-09 | 2024-03-12 | Deere & Company | Machine control using a predictive map |
| US11889788B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive biomass map generation and control |
| US11844311B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Machine control using a predictive map |
| US11711995B2 (en) | 2020-10-09 | 2023-08-01 | Deere & Company | Machine control using a predictive map |
| US11650587B2 (en) | 2020-10-09 | 2023-05-16 | Deere & Company | Predictive power map generation and control system |
| US11946747B2 (en) | 2020-10-09 | 2024-04-02 | Deere & Company | Crop constituent map generation and control system |
| US11727680B2 (en) | 2020-10-09 | 2023-08-15 | Deere & Company | Predictive map generation based on seeding characteristics and control |
| US11874669B2 (en) | 2020-10-09 | 2024-01-16 | Deere & Company | Map generation and control system |
| US11592822B2 (en) | 2020-10-09 | 2023-02-28 | Deere & Company | Machine control using a predictive map |
| US11635765B2 (en) | 2020-10-09 | 2023-04-25 | Deere & Company | Crop state map generation and control system |
| US11864483B2 (en) | 2020-10-09 | 2024-01-09 | Deere & Company | Predictive map generation and control system |
| US11845449B2 (en) | 2020-10-09 | 2023-12-19 | Deere & Company | Map generation and control system |
| US11675354B2 (en) | 2020-10-09 | 2023-06-13 | Deere & Company | Machine control using a predictive map |
| US11849672B2 (en) | 2020-10-09 | 2023-12-26 | Deere & Company | Machine control using a predictive map |
| US11889787B2 (en) | 2020-10-09 | 2024-02-06 | Deere & Company | Predictive speed map generation and control system |
| CN114323518A (en) * | 2021-12-21 | 2022-04-12 | 中国矿业大学(北京) | Test device for testing influence of subway train vibration on environment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034774A (en) * | 1988-02-03 | 1989-08-16 | 浙江大学 | A kind of method of isolating R wave propagation in the soil |
| CN101532931A (en) * | 2009-04-17 | 2009-09-16 | 中国科学院武汉岩土力学研究所 | Experimental method of simulating dynamic and static load and device thereof |
| CN102636248A (en) * | 2012-04-06 | 2012-08-15 | 南京大学 | Embedded rapid quantitative evaluation method for traffic environment vibration and embedded rapid quantitative evaluation method |
| CN102645310A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Complete set of test method of soft soil iron structure vibration table |
-
2014
- 2014-04-01 CN CN201410128570.9A patent/CN103954738B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1034774A (en) * | 1988-02-03 | 1989-08-16 | 浙江大学 | A kind of method of isolating R wave propagation in the soil |
| CN101532931A (en) * | 2009-04-17 | 2009-09-16 | 中国科学院武汉岩土力学研究所 | Experimental method of simulating dynamic and static load and device thereof |
| CN102636248A (en) * | 2012-04-06 | 2012-08-15 | 南京大学 | Embedded rapid quantitative evaluation method for traffic environment vibration and embedded rapid quantitative evaluation method |
| CN102645310A (en) * | 2012-05-08 | 2012-08-22 | 同济大学 | Complete set of test method of soft soil iron structure vibration table |
Non-Patent Citations (1)
| Title |
|---|
| 冲击振动在砂土中传播的模型试验研究;向国威 等;《上海交通大学学报》;20120131;第46卷(第1期);第137-138页以及附图4和6 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103954738A (en) | 2014-07-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103954738B (en) | A kind of laboratory testing rig measuring soil body Vibration propagation characteristic | |
| Yu et al. | Multi-point shaking table test for long tunnels subjected to non-uniform seismic loadings-part II: Application to the HZM immersed tunnel | |
| Hung et al. | Effect of railway roughness on soil vibrations due to moving trains by 2.5 D finite/infinite element approach | |
| Ulgen et al. | Measurement of ground borne vibrations for foundation design and vibration isolation of a high-precision instrument | |
| Feng et al. | In situ experimental study on high speed train induced ground vibrations with the ballast-less track | |
| Xia et al. | Theoretical modeling and characteristic analysis of moving-train induced ground vibrations | |
| Gao et al. | Field experiment and numerical study on active vibration isolation by horizontal blocks in layered ground under vertical loading | |
| Zhai et al. | Full-scale multi-functional test platform for investigating mechanical performance of track–subgrade systems of high-speed railways | |
| Lombaert et al. | The experimental validation of a numerical model for the prediction of the vibrations in the free field produced by road traffic | |
| CN106250653B (en) | A kind of full information high-precision transmission function prediction technique | |
| Yang et al. | The effect of cross-sectional shape on the dynamic response of tunnels under train induced vibration loads | |
| Jones | Use of numerical models to determine the effectiveness of anti-vibration systems for railways. | |
| Qu et al. | A hybrid methodology for predicting train-induced vibration on sensitive equipment in far-field buildings | |
| CN101787716A (en) | Model test apparatus for studying dynamic response and long-term settlement law of high-speed railway | |
| Çelebi et al. | Investigation of ground vibrations induced by moving loads | |
| Li et al. | Performance of rubber-concrete composite periodic barriers applied in attenuating ground vibrations induced by metro trains | |
| Colaço et al. | Experimental validation of a simplified soil-structure interaction approach for the prediction of vibrations in buildings due to railway traffic | |
| CN110334393A (en) | Rail traffic noise prediction method, forecasting system and vibration reducing measure evaluation method | |
| Zhang et al. | Semi-analytical simulation for ground-borne vibration caused by rail traffic on viaducts: Vibration-isolating effects of multi-layered elastic supports | |
| Qu et al. | Numerical analysis of engineered metabarrier effect on ground vibration induced by underground high-speed train | |
| Yang et al. | Train-induced vibration on elevated railway station | |
| Katou et al. | Numerical simulation study of ground vibrations using forces from wheels of a running high-speed train | |
| Ma et al. | Semi-analytical solution of a coupled tunnel-soil periodic model with a track slab under a moving train load | |
| Jones | Ground vibration from underground railways: how simplifying assumptions limit prediction accuracy | |
| Yuan et al. | Analytical layer element with a circular cavity and its application in predicting ground vibrations from surface and underground moving sources |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |