CN101787716A - Model test apparatus for studying dynamic response and long-term settlement law of high-speed railway - Google Patents
Model test apparatus for studying dynamic response and long-term settlement law of high-speed railway Download PDFInfo
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- CN101787716A CN101787716A CN 201010120821 CN201010120821A CN101787716A CN 101787716 A CN101787716 A CN 101787716A CN 201010120821 CN201010120821 CN 201010120821 CN 201010120821 A CN201010120821 A CN 201010120821A CN 101787716 A CN101787716 A CN 101787716A
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Abstract
The invention relates to a novel experimental apparatus for a high-speed railway, in particular to a model test apparatus for studying the dynamic response and long-term settlement law of the high-speed railway, which can simulate and predict the driving conditions with the speed of more than 400km/h and can provide a basis for the settlement prediction under the long-term effect.
Description
Technical field
The present invention relates to a kind of novel high-speed railway experimental facilities, particularly the model test apparatus of research high-speed railway dynamic response and long-term settlement law.
Background technology
Before the present invention, in the development test of high-speed railway dynamic response and settlement law, indoor dynamic test and field trial are the methods of using always.The indoor dynamic test comprises that dynamic triaxial apparatus, hollow cylinder reverse instrument.The research object of these tests all is a soil sample, analysis all be the dynamic characteristics of soil sample micro unit, the mechanical characteristic of this and on-the-spot roadbed is very different.And above-mentioned experimental study is confined to the symmetrical sine cyclic loading mostly to the simulation of vibrating load, is different from the pulse characteristic of the vibration of traffic loading, and the emphasis of research also is confined to dynamic stress size and the influence of cycle-index to being out of shape basically.Field trial research aspect, owing to be subjected to the restriction of test condition, tester and expense etc., can only carry out vibration displacement, speed and acceleration test to the roadbed under the track traffic load action at present, and fail the dynamic stress that ground inner array car causes is tested, make study limitation to ground inside dynamic stress in theoretical analyst coverage, most existing research only is confined to ground vibration that the track traffic load the causes aspect that influences to surrounding environment.And field trial is to be based upon on the basis of existing high-speed railway, for the high-speed railway more than the speed of a motor vehicle 300km/h that does not build as yet or be open to traffic, can't research experiment, and also just can not make a prediction to its dynamic response and long-term settlement law.In a word, reasonably the Research on Dynamic Characteristics of foundation soil is seldom under the analog orbit action of traffic loading for the pulse characteristic of considering cyclic loading, especially lack to consider the influence research of complex stress condition and stress path to dynamic stress, dynamic strain evolution in the soil body, however this point key that the theoretical research of foundation soil permanent deformation combines with experimental study under the action of traffic loading exactly.
Summary of the invention
Purpose of the present invention just is to overcome above-mentioned defective, develops a kind of novel research high-speed railway dynamic response and the model test apparatus of long-term settlement law.
Technical scheme of the present invention is:
A kind of model test apparatus of studying high-speed railway dynamic response and long-term settlement law, adopt the real high-speed railway subgrade of modeling and the track of scaled down, cruciform bracing links to each other with the framework vertical beam and supports the whole test device, hydraulic jack is installed in below the cruciform bracing, provide the two ends of load action at sleeper by the computer control hydraulic jack, load form adopts more the M type load near the true load of train.Train load characteristic over time is approximately the M type, rather than strict sine or semisinusoidal load, can be with this M type load of actual measurement as the input load, in order to train load that is virtually reality like reality during test.Force sensor measuring is offered the power of sleeper by jack size is set at the sleeper two ends, the other placing rack at the sleeper two ends, displacement and the sedimentation value of displacement sensor roadbed at vertical direction is set on it, the accekeration that acceleration transducer is used for measuring roadbed is set in imbedding the vertical tube of roadbed, and pre-buried earth pressure cell is measured the dynamic stress size in the ground in ground.
The invention has the advantages that the real high-speed railway subgrade of modeling and the track that adopt scaled down, the force-bearing situation of roadbed is more near truth; Employing replaces cyclic loading near the M type load of the true load of train more, and the research of the dynamic response of ground is more reasonable; Adopt a continuous sleeper, load is passed to the two ends of sleeper by the wedge shaped force transfer plate; Pre-buried earth pressure cell can be measured the distribution and the Changing Pattern of ground dynamic stress under the action of long-term load in the ground, for the settlement prediction under the long term provides foundation; By the load that the computer control hydraulic jack provides, can the simulation and forecast speed per hour be the above driving situation of 400km/h, be the scientific and reasonable construction of construction proposition of China Express Railway.
Description of drawings
Fig. 1---the horizontal schematic diagram of apparatus of the present invention.
Fig. 2---the vertical schematic diagram of apparatus of the present invention.
Fig. 3---M type train load schematic diagram.
The specific embodiment
As Fig. 1, shown in Figure 2, cruciform bracing 1 links to each other with framework vertical beam 2 and supports the whole test device, hydraulic jack 3 is installed in below the cruciform bracing 1, jack provides M type load by computer 4 controls, pass to by cushion block 5 and wedge shaped force transfer plate 6 on the power sensor 8 at sleeper 7 two ends, next door, the two ends mounting bracket 9 of sleeper 7, displacement transducer 10 and the vertical tube that acceleration transducer 11 is housed are set above, the direct making of sleeper is on ballastway 12, ballastway is for 12 times a foundation soil body 13, there are the 14 limit lateral displacements of side direction steel plate the both sides of ballastway 12 and foundation soil body 13, the bottom has bottom steel plate 15 to provide support, and is embedded with earth pressure cell 16 in ballastway 12 and the foundation soil body 13.
During test, by the parameter value of computer 4 inputs M type load as shown in Figure 3, train load characteristic over time is approximately the M type, rather than strict sine or semisinusoidal load, this M type load of importing during test is a measured value, in order to train load that is virtually reality like reality.Control hydraulic jack 3 produces corresponding load, and this load applies on it by the two ends that cushion block 5 and wedge shaped force transfer plate 6 pass to sleeper 7, and load passes to ballastway 12 and foundation soil body 13 successively by sleeper 7.Like this load application research dynamic response and long-term settlement law repeatedly of the control by computer 4.Behind each load application, measure the size of the power that passes to sleeper 7 two ends by power sensor 8, measure the vertical displacement value of roadbed by displacement transducer 10, measure the accekeration of roadbed by acceleration transducer 11, by the dynamic stress of earth pressure cell 16 mensuration roadbed relevant positions, the every data that record are directly gathered and storage by computer 4.
Protection scope of the present invention is not limited only to the description of present embodiment.
Claims (6)
1. model test apparatus of studying high-speed railway dynamic response and long-term settlement law, adopt the modeling high-speed railway subgrade and the track of scaled down, cruciform bracing links to each other with the framework vertical beam and supports the whole test device, hydraulic jack is installed in below the cruciform bracing, provide the two ends of load action by the computer control hydraulic jack at sleeper, force sensor measuring is offered the power of sleeper by jack size is set at the sleeper two ends, the other placing rack at the sleeper two ends, displacement and the sedimentation value of displacement sensor roadbed at vertical direction is set on it, the accekeration that acceleration transducer is used for measuring roadbed is set in imbedding the vertical tube of roadbed, and pre-buried earth pressure cell is measured the dynamic stress size in the ground in ground.
2. a kind of model test apparatus of studying high-speed railway dynamic response and long-term settlement law according to claim 1, what it is characterized in that modeling is real high-speed railway subgrade and track.
3. a kind of model test apparatus of studying high-speed railway dynamic response and long-term settlement law according to claim 1 is characterized in that load form adopts the M type load near the true load of train.
4. a kind of model test apparatus of studying high-speed railway dynamic response and long-term settlement law according to claim 1 is characterized in that adopting a continuous sleeper, load is passed to the two ends of sleeper by the wedge shaped force transfer plate.
5. a kind of model test apparatus of studying high-speed railway dynamic response and long-term settlement law according to claim 1 is characterized in that pre-buried earth pressure cell in the ground also measures the distribution and the Changing Pattern of ground dynamic stress under the action of long-term load.
6. a kind of model test apparatus of studying high-speed railway dynamic response and long-term settlement law according to claim 1, the load that provides by the computer control hydraulic jack is provided, can the simulation and forecast speed per hour be the above driving situation of 400km/h.
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| CN2010101208210A CN101787716B (en) | 2010-03-10 | 2010-03-10 | Model test apparatus for studying dynamic response and long-term settlement law of high-speed railway |
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| CN2010101208210A CN101787716B (en) | 2010-03-10 | 2010-03-10 | Model test apparatus for studying dynamic response and long-term settlement law of high-speed railway |
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| CN101787716A true CN101787716A (en) | 2010-07-28 |
| CN101787716B CN101787716B (en) | 2011-04-13 |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109419A (en) * | 2010-12-18 | 2011-06-29 | 浙江大学 | Loading simulation system of running load of high-speed railway train |
| CN102108656A (en) * | 2010-12-18 | 2011-06-29 | 浙江大学 | System for kinetic model test of ballastless track subgrade of high-speed railway |
| CN102383346A (en) * | 2011-10-09 | 2012-03-21 | 石家庄铁道大学 | Construction interference-free railroad bed settlement test device and test method thereof |
| CN102506809A (en) * | 2011-11-23 | 2012-06-20 | 中铁第一勘察设计院集团有限公司 | Structural deformation observation and data processing method at operation and maintenance stage of high-speed train |
| CN102607973A (en) * | 2012-03-07 | 2012-07-25 | 武汉科技大学 | Roadbed dynamic response in-situ test system and roadbed dynamic response in-situ test method |
| CN104568568A (en) * | 2015-01-05 | 2015-04-29 | 蔡袁强 | Multi-point excitation type airplane load model testing device and application method thereof |
| CN104614226A (en) * | 2015-01-05 | 2015-05-13 | 王鹏 | Trail-type reciprocating circulating aircraft load simulating test device and application method thereof |
| CN105735370A (en) * | 2016-03-02 | 2016-07-06 | 铁道第三勘察设计院集团有限公司 | Foundation settlement deformation prediction method based on Rayleigh waves |
| CN105784516A (en) * | 2016-03-15 | 2016-07-20 | 中国科学院寒区旱区环境与工程研究所 | Indoor simulation vehicle load vibration system |
| CN106093351A (en) * | 2016-08-15 | 2016-11-09 | 铁道第三勘察设计院集团有限公司 | A kind of method of testing simulating soil deformation characteristic under DYNAMIC LOADING OF DRIVING TRAIN ON BRIDGES and device thereof |
| CN106198081A (en) * | 2016-07-25 | 2016-12-07 | 中铁三局集团广东建设工程有限公司 | A kind of multi-point settlement regulation and control monitoring system test loading frame and test method thereof |
| CN110409518A (en) * | 2019-07-12 | 2019-11-05 | 河南理工大学 | A kind of high-speed railway goaf ground intends power stress model experimental rig and method |
| CN111173050A (en) * | 2020-01-09 | 2020-05-19 | 西安科技大学 | Tunnel and underground engineering simulation measurement system and method |
| CN111610094A (en) * | 2020-05-29 | 2020-09-01 | 西南交通大学 | Model test device and test method for high-speed railway roadbed passing karez |
| CN112389504A (en) * | 2019-08-12 | 2021-02-23 | 李辉 | Locomotive positioning detection method, device, server and system |
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Cited By (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102109419A (en) * | 2010-12-18 | 2011-06-29 | 浙江大学 | Loading simulation system of running load of high-speed railway train |
| CN102108656A (en) * | 2010-12-18 | 2011-06-29 | 浙江大学 | System for kinetic model test of ballastless track subgrade of high-speed railway |
| CN102109419B (en) * | 2010-12-18 | 2013-04-03 | 浙江大学 | Loading simulation system of running load of high-speed railway train |
| CN102383346A (en) * | 2011-10-09 | 2012-03-21 | 石家庄铁道大学 | Construction interference-free railroad bed settlement test device and test method thereof |
| CN102506809A (en) * | 2011-11-23 | 2012-06-20 | 中铁第一勘察设计院集团有限公司 | Structural deformation observation and data processing method at operation and maintenance stage of high-speed train |
| CN102607973A (en) * | 2012-03-07 | 2012-07-25 | 武汉科技大学 | Roadbed dynamic response in-situ test system and roadbed dynamic response in-situ test method |
| CN104568568A (en) * | 2015-01-05 | 2015-04-29 | 蔡袁强 | Multi-point excitation type airplane load model testing device and application method thereof |
| CN104614226A (en) * | 2015-01-05 | 2015-05-13 | 王鹏 | Trail-type reciprocating circulating aircraft load simulating test device and application method thereof |
| CN104568568B (en) * | 2015-01-05 | 2018-04-24 | 温州大学 | A kind of multi-point exciting formula aircraft loads model test apparatus and its application process |
| CN104614226B (en) * | 2015-01-05 | 2017-07-11 | 温州大学 | A kind of towed reciprocation cycle aircraft loads simulation test device and application process |
| CN105735370A (en) * | 2016-03-02 | 2016-07-06 | 铁道第三勘察设计院集团有限公司 | Foundation settlement deformation prediction method based on Rayleigh waves |
| CN105735370B (en) * | 2016-03-02 | 2017-11-14 | 中国铁路设计集团有限公司 | Foundation settlement Deformation Prediction method based on Rayleigh waves |
| CN105784516A (en) * | 2016-03-15 | 2016-07-20 | 中国科学院寒区旱区环境与工程研究所 | Indoor simulation vehicle load vibration system |
| CN106198081B (en) * | 2016-07-25 | 2019-01-22 | 中铁三局集团广东建设工程有限公司 | A kind of multi-point settlement regulation monitoring system test loading frame and its test method |
| CN106198081A (en) * | 2016-07-25 | 2016-12-07 | 中铁三局集团广东建设工程有限公司 | A kind of multi-point settlement regulation and control monitoring system test loading frame and test method thereof |
| CN106093351A (en) * | 2016-08-15 | 2016-11-09 | 铁道第三勘察设计院集团有限公司 | A kind of method of testing simulating soil deformation characteristic under DYNAMIC LOADING OF DRIVING TRAIN ON BRIDGES and device thereof |
| CN110409518A (en) * | 2019-07-12 | 2019-11-05 | 河南理工大学 | A kind of high-speed railway goaf ground intends power stress model experimental rig and method |
| CN112389504A (en) * | 2019-08-12 | 2021-02-23 | 李辉 | Locomotive positioning detection method, device, server and system |
| CN112389504B (en) * | 2019-08-12 | 2023-06-20 | 李辉 | Locomotive positioning detection method, device, server and system |
| CN111173050A (en) * | 2020-01-09 | 2020-05-19 | 西安科技大学 | Tunnel and underground engineering simulation measurement system and method |
| CN111610094A (en) * | 2020-05-29 | 2020-09-01 | 西南交通大学 | Model test device and test method for high-speed railway roadbed passing karez |
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| CN101787716B (en) | 2011-04-13 |
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