CN208459030U - 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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- CN208459030U CN208459030U CN201820963521.0U CN201820963521U CN208459030U CN 208459030 U CN208459030 U CN 208459030U CN 201820963521 U CN201820963521 U CN 201820963521U CN 208459030 U CN208459030 U CN 208459030U
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- 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
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- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 4
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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 utility model 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
It is vibrated the utility model relates to underground engineering experimental technique field more particularly to a kind of simulation two-wire metro operation
Experimental rig.
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.
Utility model content
To overcome defect of the existing technology, the utility model aim is to provide a kind of simulation two-wire metro operation vibration
Dynamic experimental rig can more accurately simulate vibration when Subway Train Operation in Existed Subway, be research metro operation to tunnel structure, week
The vibration problem that collarette border generates provides effectively feasible experimental rig.
To achieve the above object, the utility model uses 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 the mobile lotus of subway train
It carries；
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
In model.
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 utility model are: (1) simulation different buried depth, different load situations, different train operation states
Under two-wire Subway Vibration response；(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, and closing to reality engineering can be metro operation to tunnel knot
The influence research of structure and 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
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
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 is that 3:20(skilled addressee also can be practical new according to different experiments room conditioned reference sheet according to subway actual size contracting dimension scale
Content described in type adjusts moulded dimension), comprising railway roadbed, sleeper, rail, distribution beam, the section of jurisdiction PE ring, (interannular screw is connected, wrong
Seam splicing), 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
It is fixedly connected by the way that screw is equidistant, forms shield tunnel liner model and be placed in soil layer, in shield tunnel liner model bottom
It is inserted into vertical screw, calcium plaster is then directly poured and forms railway roadbed；The equidistant sleeper put and rail are bonded into shape with chloroform
Section of track structure is placed on railway roadbed, then pouring calcium plaster keeps sleeper complete after first layer solid concrete roabed initial set at section of track structure
It is mounted 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 described in the utility model is 0.45 ton/(according to model scale 3:20,4 vibration excitor simulations
Two section subway carriages, practical subway carriage carrying measure 40 tons/section, and 80 tons of the practical carrying in two section compartments is converted to mould in proportion
Type is simultaneously assigned to each vibration excitor, is 3 tons/, is provided, still needed to multiplied by similarity factor 3/20 according to engineering test Load Simulation,
Output 0.45 ton/of load of vibration excitor needed for obtaining test model can still be pressed if later period researcher modifies moulded dimension
This method calculates vibration excitor load).
Load-carrying members, i.e. model load erect composition, and each tunnel of pilot system two-wire subway described in the utility model is matched
A steelframe is covered to supporting loading equipment, and 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 described in the utility model 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 described in the utility model:
1. simulating the influence of different buried depth
When vibrating influence to metro operation using pilot system described in the utility model simulation edpth of tunnel, master can be used only
Cabinet is simulated, and earthing is filled to 1.2m thickness above original tunnel, by 3:20 scaling, the practical 8m buried depth subway of analog
Operating condition.System after the installation is completed, opens displacement meter (FBG) demodulator and server, records tunnel overall length change in displacement, position every 15min
When moving data stabilization, 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 to thickness and reach
1.8m simulates practical 12m buried depth subway operating condition, running train loading equipemtn, record various kinds of sensors reading.It bankets and finishes every time
It is both needed to monitor Tunnel Displacement variation before on-test, until row test again after tunnel subsidence is stable, avoids soil disturbance from causing
Test error.
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 according to test, vibration excitor output load, set
Set double track tunnel operation state (two column trains at the same run, only rows of vehicle operations, two column train interval certain times operation),
Start-up loading equipment obtains the vibratory response situation of tunnel structure and surrounding soil by displacement and acceleration analysis equipment, by
Data needed for server calculates output engineering, provide reference for correlative study.
The utility model carries out reduced scale cun simulation according to subway actual conditions, can be widely applied to city soft soil tunnel engineering
The scientific research in the directions such as dynamic response.Scientific research and engineering staff can sufficiently ground-to-ground iron run vibration environment response problem into
The analysis of row system test, 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 current metro operation entirely than ruler mould
The quasi- difficulty of pattern is larger, economic cost is high, and underground structure state is more difficult to control, it is difficult to simulate the metro operation feelings of different soil properties
Condition has built the bridge interknited for laboratory work, theory analysis, on-the-spot test arrangement etc., has tested correlation obtained
Data will also build for Metro Tunnel and operation provides consulting, and improve Construction of Urban Rail Traffic.
The above embodiments are only illustrative of the principle and efficacy of the utility model, and not for limitation, this is practical new
Type.Any person skilled in the art can all carry out above-described embodiment under the spirit and scope without prejudice to the utility model
Modifications and changes.Therefore, such as those of ordinary skill in the art without departing from the revealed essence of the utility model
All equivalent modifications or change completed under mind and technical idea, should be covered by the claim of the utility model.
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.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820963521.0U CN208459030U (en) | 2018-06-21 | 2018-06-21 | A kind of experimental rig of simulation two-wire metro operation vibration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820963521.0U CN208459030U (en) | 2018-06-21 | 2018-06-21 | A kind of experimental rig of simulation two-wire metro operation vibration |
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| Publication Number | Publication Date |
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| CN208459030U true CN208459030U (en) | 2019-02-01 |
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ID=65168774
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| CN201820963521.0U Active CN208459030U (en) | 2018-06-21 | 2018-06-21 | A kind of experimental rig of simulation two-wire metro operation vibration |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030034A (en) * | 2018-06-21 | 2018-12-18 | 浙江大学城市学院 | A kind of experimental rig of simulation two-wire metro operation vibration |
| CN115950614A (en) * | 2023-03-14 | 2023-04-11 | 中国电建集团西北勘测设计研究院有限公司 | Vibration environment simulation device for construction of livable good industry and rural areas |
-
2018
- 2018-06-21 CN CN201820963521.0U patent/CN208459030U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109030034A (en) * | 2018-06-21 | 2018-12-18 | 浙江大学城市学院 | A kind of experimental rig of simulation two-wire metro operation vibration |
| CN115950614A (en) * | 2023-03-14 | 2023-04-11 | 中国电建集团西北勘测设计研究院有限公司 | Vibration environment simulation device for construction of livable good industry and rural areas |
| CN115950614B (en) * | 2023-03-14 | 2023-06-13 | 中国电建集团西北勘测设计研究院有限公司 | Vibration environment simulation device |
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Address after: 310015 No. 51 Huzhou street, Hangzhou, Zhejiang, Gongshu District Patentee after: HANGZHOU City University Address before: 310015 No. 51 Huzhou street, Hangzhou, Zhejiang, Gongshu District Patentee before: Zhejiang University City College |
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| TR01 | Transfer of patent right |
Effective date of registration: 20231227 Address after: Room 557, Building 1, No. 8 Gaoshun Road, Wuchang Street, Yuhang District, Hangzhou City, Zhejiang Province, 311100 Patentee after: Zhejiang Shuyu Transportation Technology Co.,Ltd. Address before: 310015 No. 51 Huzhou street, Hangzhou, Zhejiang, Gongshu District Patentee before: HANGZHOU City University |