CN109030034A - A kind of experimental rig of simulation two-wire metro operation vibration - Google Patents
A kind of experimental rig of simulation two-wire metro operation vibration Download PDFInfo
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- CN109030034A CN109030034A CN201810645400.6A CN201810645400A CN109030034A CN 109030034 A CN109030034 A CN 109030034A CN 201810645400 A CN201810645400 A CN 201810645400A CN 109030034 A CN109030034 A CN 109030034A
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- 238000004088 simulation Methods 0.000 title claims abstract description 25
- 238000006073 displacement reaction Methods 0.000 claims abstract description 29
- 239000002689 soil Substances 0.000 claims abstract description 21
- 238000012360 testing method Methods 0.000 claims abstract description 16
- 230000001133 acceleration Effects 0.000 claims abstract description 15
- 238000004458 analytical method Methods 0.000 claims abstract description 15
- 229910000831 Steel Inorganic materials 0.000 claims description 13
- 239000010959 steel Substances 0.000 claims description 13
- 241001669679 Eleotris Species 0.000 claims description 9
- 239000011888 foil Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims 1
- 238000011160 research Methods 0.000 abstract description 7
- 238000013461 design Methods 0.000 abstract description 3
- 238000010276 construction Methods 0.000 description 6
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- 229910052791 calcium Inorganic materials 0.000 description 4
- 239000011575 calcium Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000011505 plaster Substances 0.000 description 4
- 238000004062 sedimentation Methods 0.000 description 4
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 3
- 238000013016 damping Methods 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000009933 burial Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 229910052742 iron Inorganic materials 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/08—Railway vehicles
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M7/00—Vibration-testing of structures; Shock-testing of structures
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Geophysics And Detection Of Objects (AREA)
Abstract
A kind of experimental rig of simulation two-wire metro operation vibration, including model casing, tunnel model, train loading equipemtn, load-carrying members, displacement measuring equipment, acceleration analysis equipment and server；Train loading equipemtn, including vibration excitor and dynamic signal testing system, to simulate subway train traveling load；Load-carrying members are connect with train loading equipemtn, for supporting train loading equipemtn；Displacement measuring equipment, acceleration analysis equipment are connect with server；Displacement measuring equipment and acceleration analysis equipment are mounted in the soil layer of device or in tunnel model.The present invention simulates the two-wire Subway Vibration response under different buried depth, different load situations, different train operation states；It can be used for simulating two-wire Subway Vibration, be suitable for complex working condition Subway Vibration and study；Tunnel model carries out contracting size design fully according to Hangzhou Subway tunnel, closing to reality engineering, can the influence research for metro operation to tunnel structure and ambient enviroment reliable, convenient and fast test platform is provided.
Description
Technical field
The present invention relates to underground engineering experimental technique field more particularly to a kind of tests of simulation two-wire metro operation vibration
Device.
Background technique
As China's metro construction rapidly develops, the ambient vibration problem that metro operation causes also increasingly is highlighted, ground
Iron train load is larger, settlement of foundation is inevitably resulted under Long-term Cyclic Loading effect, or even influence route normal use, as above
There is no sedimentations substantially during extra large Subway Line 1 is not open to traffic after building up, and sedimentation increases during starting operation 8 months
30 ~ 60mm, the inner part section sedimentation in 4 years that is open to traffic is more than 140mm；The western extensions of Line of Nanjing Subway No.1 line tunnel after operation 4 years
Largest cumulative sedimentation reaches 122mm, considerably beyond the 20mm total settlement of standard.In addition, vibration can be passed through in the form of wave
Ground is transmitted to surrounding buildings, and caused environmental perturbation operates high-tech precision instrument along the line, conservation of historic buildings and resident are raw
Work can generate very important influence, pay attention to extensively for engineering circles.Therefore become about subway train dither effect and the soil body
The research of shape mechanism to instruct constructing metro tunnel and control settlement after construction be of great significance.
In terms of subway train traveling load design simulation, the country there is no two-wire subway indoor model to occur.City at present
Urban rail transit construction speed is getting faster, and corresponding simulation test, theoretical research etc. still more lag, and are current engineering circles
One big hot subject.On the other hand, the full scale model simulation difficulty of metro operation is larger at present, economic cost is high, and underground is tied
Structure state is more difficult to control, it is difficult to simulate the metro operation situation of different soil properties.
Summary of the invention
To overcome defect of the existing technology, it is an object of that present invention to provide a kind of simulation two-wire metro operation vibrations
Experimental rig can more accurately simulate vibration when Subway Train Operation in Existed Subway, be research metro operation to tunnel structure, surrounding ring
The vibration problem that border generates provides effectively feasible experimental rig.
To achieve the above object, the invention adopts the following technical scheme.
A kind of experimental rig of simulation two-wire metro operation vibration, described device include that model casing, tunnel model, train add
Carry equipment, load-carrying members, displacement measuring equipment, acceleration analysis equipment and server；
The train loading equipemtn, including vibration excitor and dynamic signal testing system, to simulate subway train traveling load；
The load-carrying members are connect with the train loading equipemtn, for supporting the train loading equipemtn；
The displacement measuring equipment, acceleration analysis equipment are connect with the server；
The displacement measuring equipment and acceleration analysis equipment is mounted in the soil layer of described device or the tunnel model
In.
Preferably, the displacement measuring equipment includes laser displacement sensor and foil gauge.
Preferably, the acceleration analysis equipment includes accelerometer.
Preferably, the model casing is formed by steel plate splicing, and steelframe setting is in cabinet two sides for resisting lateral pressure, mould
Soil layer is filled in molding box.
Preferably, the tunnel model includes railway roadbed, sleeper, rail and the section of jurisdiction PE ring.
Preferably, the load-carrying members include steel structural upright column and steel structure beam.
Preferably, the number of the vibration excitor in the train loading equipemtn is 4.
The beneficial effects of the present invention are: under (1) simulation different buried depth, different load situations, different train operation states
The response of two-wire Subway Vibration；(2) it can be used for simulating two-wire Subway Vibration, be suitable for complex working condition Subway Vibration and study；(3) tunnel
Model carries out contracting size design fully according to Hangzhou Subway tunnel, closing to reality engineering, can for metro operation to tunnel structure and
The influence research of ambient enviroment provides reliable, convenient and fast test platform.
Detailed description of the invention
Fig. 1 is experimental rig sectional view.
Fig. 2 is rail system detail drawing.
Fig. 3 is overall model sectional view.
Fig. 4 is steel frame construction schematic diagram.
Description of symbols: 2, steelframe；3, soil layer；3-1, railway roadbed；4, sleeper；5, rail；6, the section of jurisdiction PE ring；7, it distributes
Beam；8, vibration excitor；9, steel structural upright column；10, steel structure beam；11, damping material；12, first sensor group；13, it second passes
Sensor group.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Referring to figs. 1 to 4, a kind of experimental rig of simulation two-wire metro operation vibration, including model casing, tunnel mould
Type, train loading equipemtn, load-carrying members, displacement measuring equipment, acceleration analysis equipment, server, damping material.
Model casing is formed by steel plate splicing.The setting of steelframe 2 is in intermediate main box two sides for resisting lateral pressure.Mould
By the filling soil layer 3 such as edpth of tunnel filling sand, clay needed for studying in molding box.
Tunnel model includes railway roadbed 3-1, sleeper 4, rail 5, the section of jurisdiction PE ring 6, and the interannular of the section of jurisdiction PE ring 6 uses screw phase
Even, fissure of displacement splicing simulation tunnel-liner, is placed in soil layer 3, and in the section of jurisdiction PE, 6 pipe ring inside bottom of ring is inserted into vertical screw, then
It directly pours calcium plaster and forms railway roadbed 3-1；The equidistant sleeper 4 put and the bonding of rail 5 are formed into section of track structure with chloroform, and
Four distribution beams 7 are bonded by 3 spacing in figure, after first layer solid concrete roabed initial set, section of track structure is placed on railway roadbed, then is poured
Calcium plaster is mounted in sleeper in railway roadbed completely.The vibration of two-wire metro operation is simulated with two tunnel models.Tunnel model ginseng
It also can be according to different experiments room conditioned reference institute of the present invention for 3:20(skilled addressee according to subway actual size contracting dimension scale
State content adjustment moulded dimension), comprising railway roadbed, sleeper, rail, distribution beam, the section of jurisdiction PE ring, (interannular screw is connected, and the fissure of displacement is spelled
Connect), the soil body.The section of jurisdiction PE ring diameter 0.62m, thickness 4cm.Track overall length 6m railway roadbed is set as monoblock type railway roadbed.The section of jurisdiction PE ring passes through
Screw is equidistant to be fixedly connected, and is formed shield tunnel liner model and is placed in soil layer, is inserted into shield tunnel liner model bottom
Vertical screw then directly pours calcium plaster and forms railway roadbed；The equidistant sleeper put and rail are bonded and to form rail with chloroform
Structure is arranged, after first layer solid concrete roabed initial set, section of track structure is placed on railway roadbed, then pour calcium plaster to make the complete build-in of sleeper
In railway roadbed.
Train loading equipemtn, including 4 vibration excitors 8 and 1 set of dynamic signal testing system are moved to simulate subway train
Dynamic load.Vibration excitor output load of the present invention is that (according to model scale 3:20,4 vibration excitors simulate two sections to 0.45 ton/
Subway carriage, practical subway carriage carrying measure 40 tons/section, 80 tons of the practical carrying in two section compartments, are converted to model, simultaneously in proportion
It is assigned to each vibration excitor, is 3 tons/, is provided according to engineering test Load Simulation, still need to try multiplied by similarity factor 3/20
Testing output 0.45 ton/of load of vibration excitor needed for model still can be by this method if later period researcher modifies moulded dimension
Calculate vibration excitor load).
Load-carrying members, i.e. model load erect composition, each tunnel of pilot system two-wire subway mating one of the present invention
For a steelframe to supporting loading equipment, single steelframe includes two steel structural upright columns, 9, steel structure beams 10.It is detailed in Fig. 4.
Displacement measuring equipment includes two groups of Keyemce LK-H155 laser displacement sensors and foil gauge, for measuring subway
Displacement, the strain of tunnel lining segment structure, wherein laser displacement sensor can also measure the displacement of the soil body.Sensor performance
It is as follows: (1) range: 80mm；(2) linear precision: (± 0.02 %F.S.=16 μm)；(3) reproducibility precision: 0.25 μm；(4)
Sampling frequency: 9 kinds of " 2.55/5/10/20/100/200/500/1000 μ s " is optional.Foil gauge precision is 0.5 μm.First sensing
Device group 12 includes laser displacement sensor and foil gauge, and second sensor group 13 includes laser displacement sensor, and burial place is shown in
Fig. 1, shown in 2, wherein black box indicates first sensor group 12, and black round block indicates second sensor group 13.
Acceleration analysis equipment includes two groups of accelerometers, for measuring the acceleration of Subway Tunnel Lining tunnel segment structure,
It is respectively used to double track tunnel model, accelerometer precision is that g is unit of acceleration, 1g=9.8m/s2 to 0.01g(herein), first passes
It further include accelerometer in sensor group 12, burial place is shown in Fig. 1,2.
First sensor group 12 includes laser displacement sensor and foil gauge, accelerometer, and second sensor group 13 is wrapped
Include laser displacement sensor, first sensor group 12 is placed on everywhere each one up and down of subway tunnel section of jurisdiction, with tunnel
Longitudinal length is 1.0m overall length arrangement by spacing.Second sensor group 13 is placed in the soil body former with earth's surface arrangement in earth's surface
Then are as follows: tunnel upper is spread out to two sides, is that 0.8m is arranged into outside distance model case at 1 ~ 2m of avris by lateral distance, longitudinal with tunnel
Road longitudinal length is 1.0m overall length arrangement by spacing.Soil body arrangement principle is consistent with earth's surface, is arranged in tunnel upper and ground
Table middle position.
Experimental rig of the present invention is symmetrical structure, therefore sensor is buried and is only embedded in symmetry axis unilateral side.
The damping material 11 is made of the plastic foamboard, steel cushion block and polystyrene film of 10cm thickness, and setting exists
Reflection effect, the simulation soil boundary condition of model casing side and bottom position to reduce model tank wall, improve test accuracy.
The server contains data processing software, receives vibration, Internal Force Monitoring data, and carry out calculation processing.
It is exemplified below several operating conditions that simulation two-wire Subway Vibration response is carried out using pilot system of the present invention:
1. simulating the influence of different buried depth
When vibrating influence to metro operation using pilot system of the present invention simulation edpth of tunnel, main box can be used only and carry out
Simulation, original tunnel top earthing is filled to 1.2m thickness, by 3:20 scaling, the practical 8m buried depth subway operating condition of analog.System
System after the installation is completed, opens displacement meter (FBG) demodulator and server, records tunnel overall length change in displacement, displacement data every 15min
When stablizing, running train loading equipemtn, record various kinds of sensors reading.Continue to banket and reach 1.5m to thickness, simulates practical 10m
Buried depth subway operating condition, running train loading equipemtn, record various kinds of sensors reading；Continue to banket and reach 1.8m to thickness, simulates
Practical 12m buried depth subway operating condition, running train loading equipemtn, record various kinds of sensors reading.It bankets to finish every time and is both needed to trying
Monitoring Tunnel Displacement changes before testing beginning, and the row test again after tunnel subsidence is stablized avoids caused test of soil disturbance from missing
Difference.
2. simulating the influence of different load situations, different train operation states
System is right after the installation is completed, it is only necessary to need to change vibration excitor vibration frequency, vibration excitor output load, setting pair according to test
Threaded list road operation state (two column trains are runed simultaneously, only rows of vehicle operations, two column train interval certain times run), starting
Loading equipemtn obtains the vibratory response situation of tunnel structure and surrounding soil by displacement and acceleration analysis equipment, by servicing
Data needed for device calculates output engineering, provide reference for correlative study.
The present invention carries out reduced scale cun simulation according to subway actual conditions, can be widely applied to city soft soil tunnel engineering dynamic
The scientific research in the directions such as response.Scientific research and engineering staff can sufficiently ground-to-ground iron runs vibration environment response problem system
System analysis of experiments, explores the vibration deformation mechanism of subway tunnel structure, surrounding soil, to instruct engineering practice, improves subway
Safety optimizes urban rail transit construction.Contracting dimension model can preferably solve the full scale model mould of current metro operation
Quasi- difficulty is larger, economic cost is high, and underground structure state is more difficult to control, it is difficult to the metro operation situation of different soil properties is simulated,
The bridge interknited has been built for laboratory work, theory analysis, on-the-spot test arrangement etc., has tested dependency number obtained
According to, also will for Metro Tunnel build and operation consulting be provided, improve Construction of Urban Rail Traffic.
The above-described embodiments merely illustrate the principles and effects of the present invention, and is not intended to limit the present invention.It is any ripe
The personage for knowing this technology all without departing from the spirit and scope of the present invention, carries out modifications and changes to above-described embodiment.Cause
This, institute is complete without departing from the spirit and technical ideas disclosed in the present invention by those of ordinary skill in the art such as
At all equivalent modifications or change, should be covered by the claims of the present invention.
Claims (7)
1. a kind of experimental rig of simulation two-wire metro operation vibration, which is characterized in that described device includes model casing, tunnel mould
Type, train loading equipemtn, load-carrying members, displacement measuring equipment, acceleration analysis equipment and server；
The train loading equipemtn, including vibration excitor and dynamic signal testing system, to simulate subway train traveling load；
The load-carrying members are connect with the train loading equipemtn, for supporting the train loading equipemtn；
The displacement measuring equipment, acceleration analysis equipment are connect with the server；
The displacement measuring equipment and acceleration analysis equipment is mounted in the soil layer of described device or the tunnel model
In.
2. a kind of experimental rig of simulation two-wire metro operation vibration according to claim 1, which is characterized in that institute's rheme
Shift measurement equipment includes laser displacement sensor and foil gauge.
3. a kind of experimental rig of simulation two-wire metro operation vibration according to claim 1, which is characterized in that described to add
Speed measuring equipment includes accelerometer.
4. a kind of experimental rig of simulation two-wire metro operation vibration according to claim 1, which is characterized in that the mould
Molding box is formed by steel plate splicing, and steelframe setting, for resisting lateral pressure, fills soil layer in model casing in cabinet two sides.
5. a kind of experimental rig of simulation two-wire metro operation vibration according to claim 1, which is characterized in that the tunnel
Road model includes railway roadbed, sleeper, rail and the section of jurisdiction PE ring.
6. a kind of experimental rig of simulation two-wire metro operation vibration according to claim 1, which is characterized in that described to hold
Weight structure includes steel structural upright column and steel structure beam.
7. a kind of experimental rig of simulation two-wire metro operation vibration according to claim 1, which is characterized in that the column
The number of vibration excitor in vehicle loading equipemtn is 4.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810645400.6A CN109030034A (en) | 2018-06-21 | 2018-06-21 | A kind of experimental rig of simulation two-wire metro operation vibration |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810645400.6A CN109030034A (en) | 2018-06-21 | 2018-06-21 | A kind of experimental rig of simulation two-wire metro operation vibration |
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| CN109030034A true CN109030034A (en) | 2018-12-18 |
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ID=64610705
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109459311A (en) * | 2018-12-19 | 2019-03-12 | 中国地质大学（武汉） | A kind of experimental provision for simulating pipe ring stress deformation in tunnel under different stress conditions |
| CN109916719A (en) * | 2019-04-01 | 2019-06-21 | 西安建筑科技大学 | The immersion of loess subway tunnel surrounding and dynamic load simulation system and test method |
| CN111291517A (en) * | 2020-04-07 | 2020-06-16 | 北京市市政工程研究院 | Subway induced vibration monitoring method and sensor fixing device |
| CN111982720A (en) * | 2020-08-25 | 2020-11-24 | 西安建筑科技大学 | Test device and method for simulating saturated stratum subway circulating vibration influence |
| CN113588465A (en) * | 2021-07-30 | 2021-11-02 | 上海应用技术大学 | Method and device for simulating tunnel deformation under subway traffic load effect |
| WO2022032900A1 (en) * | 2020-08-12 | 2022-02-17 | 青岛理工大学 | Large-scale test platform for influence of subway vibration on surrounding environment |
| CN111291517B (en) * | 2020-04-07 | 2024-05-31 | 北京市市政工程研究院 | Subway induced vibration monitoring method and sensor fixing device |
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| CN109459311A (en) * | 2018-12-19 | 2019-03-12 | 中国地质大学（武汉） | A kind of experimental provision for simulating pipe ring stress deformation in tunnel under different stress conditions |
| CN109459311B (en) * | 2018-12-19 | 2024-02-27 | 中国地质大学（武汉） | Experimental device for tunnel pipe ring atress warp under simulation different atress conditions |
| CN109916719A (en) * | 2019-04-01 | 2019-06-21 | 西安建筑科技大学 | The immersion of loess subway tunnel surrounding and dynamic load simulation system and test method |
| CN111291517A (en) * | 2020-04-07 | 2020-06-16 | 北京市市政工程研究院 | Subway induced vibration monitoring method and sensor fixing device |
| CN111291517B (en) * | 2020-04-07 | 2024-05-31 | 北京市市政工程研究院 | Subway induced vibration monitoring method and sensor fixing device |
| WO2022032900A1 (en) * | 2020-08-12 | 2022-02-17 | 青岛理工大学 | Large-scale test platform for influence of subway vibration on surrounding environment |
| CN111982720A (en) * | 2020-08-25 | 2020-11-24 | 西安建筑科技大学 | Test device and method for simulating saturated stratum subway circulating vibration influence |
| CN113588465A (en) * | 2021-07-30 | 2021-11-02 | 上海应用技术大学 | Method and device for simulating tunnel deformation under subway traffic load effect |
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