CN206192618U - A test device for studying tunnel compressional wave, minute -pressure ripples - Google Patents
A test device for studying tunnel compressional wave, minute -pressure ripples Download PDFInfo
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- CN206192618U CN206192618U CN201621111661.2U CN201621111661U CN206192618U CN 206192618 U CN206192618 U CN 206192618U CN 201621111661 U CN201621111661 U CN 201621111661U CN 206192618 U CN206192618 U CN 206192618U
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Abstract
The utility model discloses a test device for studying tunnel compressional wave, minute -pressure ripples, including the tunnel model that awaits measuring, the highly -compressed air feeding device who links to each other with the tunnel model's that awaits measuring port and be used for await measuring tunnel model internal pressure's pressure monitoring analytic system of monitoring and analysis. It is more accurate to the survey of compressional wave, minute -pressure ripples to adopt the similar experiment of reduced scale. Provide highly -compressed air through highly -compressed air feeding device and produce initial wave form, through the formation of the compressional wave in the control flap simulation tunnel, later monitor assay through pressure detection analytic system to the tunnel model's that awaits measuring internal pressure, the tunnel model that awaits measuring accord with with the similar requirement of the reduced scale in actual tunnel. Adopt the utility model discloses can be directed against unestablished tunnel, judge based on the research of pressure wave whether the design of unestablished tunnel satisfies the standard of pressure wave and minute -pressure ripples, and the testing result of gained is more accurate.
Description
Technical field
The utility model is related to tunnels mimic studying technological domain, and in particular to one kind is for studying tunnel compressional wave, micro-
Press the experimental rig of ripple.
Background technology
When train charges into tunnel at a relatively high speed from open-wire line, the limitation due to tunnel space to train surrounding space,
Gas near tunnel face is subject to the strong extruding of train, and train front portion pressure is suddenly raised and forms a pressure pulse, should
Pulse is referred to as inlet compression ripple.At tunnel exit, fraction compressional wave is through reflecting to hole emission low-frequency pulse and generation sound
Quick-fried phenomenon, referred to as micro-pressure wave.Compressional wave can cause passenger's ear-drum uncomfortable and may influence the train intensity, micro-pressure wave to make
Into tunnel exit sonic boom phenomenon and the strenuous vibration of annex building structure may be caused.Therefore research compressional wave is in tunnel
Communication process and tunnel construction change are highly important to the influence that it is propagated.
In the prior art, tunnel compressional wave, the research of micro-pressure wave uses existing car experiment and numerical computations to be divided substantially
Analysis, although analog simulation is operationally fairly simple, but due to without actual physical environment, causing final result of study
Being inaccurate, if directly carrying out full-scale test to tunnel, implement and very difficult, therefore need one kind badly at present is used for
Research tunnel compressional wave, the experimental rig of micro-pressure wave.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of simple to operate, research structure to be accurately used to grind
Study carefully the experimental rig of tunnel compressional wave, micro-pressure wave.
In order to solve the technical problem of above-mentioned prior art, the utility model is realized using following technical scheme：
The utility model is used to studying the experimental rig of tunnel compressional wave, micro-pressure wave, including tunnel model to be measured and to be measured
The connected pressure-air feedway in the port of tunnel model and for monitoring and analyze tunnel model internal pressure to be measured
Pressure monitoring analysis system.It is more accurate to the measure of compressional wave, micro-pressure wave using reduced scale similar test.Supplied by pressure-air
Pressure-air is provided to device and produce initial waveform, by the formation of the compressional wave in control valve simulation tunnel, pass through afterwards
Pressure detecting analysis system is monitored analysis to the internal pressure of tunnel model to be measured, and the tunnel model to be measured meets and reality
The reduced scale requirement of similarity in border tunnel.Unestablished tunnel can be directed to using the utility model, grinding for compressional wave is mainly based upon
Study carefully the standard for judging whether unestablished structure design of tunnel meets compressional wave and micro-pressure wave, the testing result of gained is more accurate
Really.
As the above-mentioned further improvement for studying tunnel compressional wave, the experimental rig of micro-pressure wave, the pressure-air
Feedway includes the air compression plant, the caisson that are sequentially connected, the gas outlet of the caisson and tunnel mould to be measured
Type port is connected, and the port is provided with valve.By air compression plant compressed air, compressed-air-storing is in caisson
The convenient break-make by between Valve controlling compressed air and tunnel model port to be measured.The valve can preferred ball valve.Adopt
With ball valve the logical of compressed air can be more precisely controlled as caisson with the valve before tunnel model port to be measured
It is disconnected, beneficial to the initial compression waves produced when producing and being more nearly true train into tunnel, further improve the utility model inspection
Survey the accuracy of result.
As the above-mentioned further improvement for studying tunnel compressional wave, the experimental rig of micro-pressure wave, the tunnel to be measured
Connection is provided with transverse passage-way model and/or vertical shaft model on model.Transverse passage-way model and/or vertical shaft are set on tunnel model to be measured
Model, can be directed to compressional wave, micro-pressure wave, be that the parameter and distribution of transverse passage-way and vertical shaft in actual tunnel offer an opinion.
As the above-mentioned further improvement for studying tunnel compressional wave, the experimental rig of micro-pressure wave, the tunnel to be measured
Model is provided with buffer structure model, and the buffer structure model includes being arranged at the port buffering of tunnel model port to be measured
Structural model and/or the cushion inner structure model being arranged inside tunnel model to be measured.Thus can further to be completed
Actual tunnel is detected and the mitigation strategy to micro-pressure wave, compressional wave is advised.
Above-mentioned tunnel model to be measured and transverse passage-way model and/or vertical shaft model, tunnel model to be measured and buffer structure mould
Type collectively forms tunnel model structure to be measured.
As the above-mentioned further improvement for studying tunnel compressional wave, the experimental rig of micro-pressure wave, the port buffering
Structural model is section enlarged configuration, bell-mouth structure of air or the bell-mouth structure of air with perforate.Increase in tunnel model port to be measured
It is that micro-pressure wave at tunnel's entrance and exit, compressional wave mitigation strategy offer an opinion if buffer structure.
Further, the port buffer structure model is detachably connected with tunnel model to be measured.Above-mentioned three kinds different
Port buffer structure model can share tunnel model to be measured when mutually replacing, and the manufacturing cost of device saved, using more square
Just.
As the above-mentioned further improvement for studying tunnel compressional wave, the experimental rig of micro-pressure wave, the internal damping
Structural model is the sand paper layer for being arranged at tunnel model inwall to be measured.Buffer structure is set up inside tunnel model to be measured, is real
The micro-pressure wave of border tunnel internal, compressional wave mitigation strategy offer an opinion.
The utility model can be detected under above two improvement further directed to built tunnel, same first
Judge whether to meet standard, if it is not satisfied, the improvement for actual tunnel mitigation strategy under above two structure offers an opinion.Mesh
The preceding device main purpose is the differentiation for studying compressional wave along tunnel, and for short tunnel, compressional wave has little time to develop
Tunnel exit is traveled to, therefore does not study the necessity of differentiation, developed main for long tunnel.Above-mentioned all bufferings
Structural model is satisfied by the reduced scale requirement of similarity with practical structures.
As the above-mentioned further improvement for studying tunnel compressional wave, the experimental rig of micro-pressure wave, the pressure monitoring
Analysis system includes being arranged at several pressure sensors inside tunnel model to be measured and distinguishes with each pressure sensor
Connected computer.Further, the inwall of the tunnel model to be measured, entrance point, the port of export are equipped with pressure sensor.It is logical
Cross said structure more accurately can be monitored analysis to the pressure inside tunnel model to be measured.
As the above-mentioned further improvement for studying tunnel compressional wave, the experimental rig of micro-pressure wave, the tunnel to be measured
The membranous type that model is made up of PVC material.The model prices that PVC material is constituted are cheap, material environment friendly, light quality.
Below by way of accompanying drawing and specific embodiment, the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the schematic diagram of one of tunnel model structure to be measured in the utility model.
Fig. 3 is the schematic diagram of two of tunnel model structure to be measured in the utility model.
Fig. 4 is the schematic diagram of three of tunnel model structure to be measured in the utility model.
Fig. 5 is the schematic diagram of four of tunnel model structure to be measured in the utility model.
Specific embodiment
As shown in figure 1, the utility model is used to study the experimental rig of tunnel compressional wave, micro-pressure wave, including tunnel to be measured
Pressure-air feedway 2 that model 1 is connected with the port of tunnel model to be measured 1 and for monitoring and analyze tunnel to be measured
The pressure monitoring analysis system of the internal pressure of model 1, above-mentioned port selects the entrance point 11 of tunnel model 1 to be measured, the high pressure
Air feeder 2 includes the air compression plant 21, the caisson 22 that are sequentially connected, the gas outlet of the caisson 22 with
The entrance point 11 of tunnel model to be measured 1 is connected, and the entrance point 11 is provided with valve 4, and the pressure monitoring analysis system 3 includes setting
Several pressure sensors 32 being placed in inside tunnel model to be measured 1 and the calculating being respectively connected with each pressure sensor 32
Machine 31, the inwall of the tunnel model to be measured 1, the entrance point 11, port of export are equipped with pressure sensor 32.The tunnel mould to be measured
Type 1 is made up of PVC material.
The tunnel model to be measured 1 is provided with transverse passage-way model 121 and/or the vertical shaft being arranged on tunnel model to be measured 1
Model 122, as shown in figure 5, tunnel model to be measured 1 is provided with transverse passage-way model 121 and vertical shaft model 122 simultaneously, above-mentioned is horizontal logical
Road model 121 includes another tunnel model 1211 and connects the side of another tunnel model 1211 and tunnel model to be measured 1
Passage 1210, another tunnel model 1211 is similarly the model of PVC material composition.
Buffer structure model is provided with inside the tunnel model to be measured 1, buffer structure model there can be following several settings
Mode：First, it is arranged at the port buffer structure model of tunnel model port to be measured；Second is arranged in tunnel model to be measured
The cushion inner structure model in portion；3rd is while having above two buffer structure model.It is illustrated in figure 2 and several is provided with end
The tunnel model to be measured 1 of mouth buffer model, the entrance point 11 of the tunnel model to be measured 1 is provided with port buffer structure model, institute
It for section enlarged configuration 111, i.e. the end face enlarged configuration 111 is with diameter greater than tunnel mould to be measured to state port buffer structure model
The pipeline of the diameter of type 1, as shown in figure 3, the entrance point 11 of the tunnel model to be measured 1 is provided with port buffer structure model, it is described
Port buffer structure model is bell-mouth structure of air 112, as shown in figure 4, the entrance point 11 of the tunnel model to be measured 1 is provided with port
Buffer structure model, the port buffer structure model is the entrance point 11 of the bell-mouth structure of air 112 with perforate 110.It is described
Cushion inner structure model can be the sand paper layer for being arranged at the inwall of tunnel model to be measured 1.Above-mentioned several port buffer structure moulds
Type is detachably connected with the tunnel model to be measured 1 of tunnel model to be measured, realizes that different port buffer structure models are mutually replaced
Shi Gongyong tunnel models to be measured, different buffer structures can be replaced installation according to detection object is put into practice.
The scaling factor in tunnel model to be measured and the tunnel for being actually needed detection in the utility model, it is the vertical shaft of setting, horizontal logical
Road and buffer structure model are satisfied by contracting with the scaling factor of the tunnel shaft, transverse passage-way and the buffer structure that are actually needed detection
Chi compares 1:86.The utility model is directly with pressurized air systems come the generation of analog compression ripple, and PVC pipeline simulation tunnel is internal
Each point pressure in arrangement pressure sensor testing tube, and then reach the purpose of research waveform.When needing that unestablished tunnel is entered
During row detection, using the utility model for being not provided with buffer structure, air compression plant 21 is opened, mould is produced by control valve
Intend compressional wave, computer 31 collects the pressure signal of each point pressure sensor 32 and switchs to Computer signal carries out calculating analysis,
Thus judge whether the tunnel compressional wave, micro-pressure wave meet standard.When needing to detect the tunnel for having built up,
First using the utility model for being provided with vertical shaft, transverse passage-way and buffer structure, operated according to above-mentioned flow, judged, such as
Fruit detects the compressional wave in the tunnel, micro-pressure wave and is not inconsistent standardization, sets up different buffer structures, is carried out according to above-mentioned flow again
Operation, judgement, the improvement as actual tunnel mitigation strategy offer an opinion.
Claims (10)
1. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave, it is characterised in that including tunnel model to be measured (1) and treat
Survey the connected pressure-air feedway (2) in port of tunnel model (1) and for monitoring and analyze tunnel model to be measured (1)
The pressure monitoring analysis system of internal pressure.
2. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 1, it is characterised in that the height
Pressure air feeder (2) includes the air compression plant (21), the caisson (22) that are sequentially connected, the caisson (22)
Gas outlet be connected with the port of tunnel model to be measured (1), the port is provided with valve (4).
3. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 1, it is characterised in that described to treat
Survey connection on tunnel model (1) and be provided with transverse passage-way model (121) and/or vertical shaft model (122).
4. the experimental rig for studying tunnel compressional wave, micro-pressure wave as described in claim 1 or 3, it is characterised in that described
Tunnel model (1) to be measured is provided with buffer structure model, and the buffer structure model includes being arranged at tunnel model to be measured (1) end
The port buffer structure model at mouthful place and/or the cushion inner structure model being arranged inside tunnel model to be measured (1).
5. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 4, it is characterised in that the end
Mouth buffer structure model is section enlarged configuration (111), bell-mouth structure of air (112) or the bell-mouth structure of air with perforate (110)
(112)。
6. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 5, it is characterised in that the end
Mouth buffer structure model is detachably connected with tunnel model to be measured (1).
7. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 4, it is characterised in that in described
Portion's buffer structure model is the sand paper layer for being arranged at tunnel model to be measured (1) inwall.
8. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 1, it is characterised in that the pressure
Power monitoring analysis system (3) including be arranged at several internal pressure sensors (32) of tunnel model to be measured (1) and with it is each
The computer (31) that individual pressure sensor (32) is respectively connected with.
9. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 8, it is characterised in that described to treat
Survey the inwall of tunnel model (1), two ends and be equipped with pressure sensor (32).
10. it is used to study the experimental rig of tunnel compressional wave, micro-pressure wave as claimed in claim 1, it is characterised in that described to treat
It is the membranous type being made up of PVC material to survey tunnel model (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621111661.2U CN206192618U (en) | 2016-10-10 | 2016-10-10 | A test device for studying tunnel compressional wave, minute -pressure ripples |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621111661.2U CN206192618U (en) | 2016-10-10 | 2016-10-10 | A test device for studying tunnel compressional wave, minute -pressure ripples |
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| Publication Number | Publication Date |
|---|---|
| CN206192618U true CN206192618U (en) | 2017-05-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621111661.2U Active CN206192618U (en) | 2016-10-10 | 2016-10-10 | A test device for studying tunnel compressional wave, minute -pressure ripples |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760216A (en) * | 2018-04-10 | 2018-11-06 | 东北大学 | Based on subway tunnel rig for model test and its test method as dynamical phase |
| CN110274777A (en) * | 2019-06-30 | 2019-09-24 | 西南交通大学 | Rail vehicle air pressure wave in tunnel testing stand and method |
| CN115165289A (en) * | 2022-09-07 | 2022-10-11 | 中国航空工业集团公司沈阳空气动力研究所 | Ultrasonic explosion phenomenon wind tunnel test simulation system and method |
-
2016
- 2016-10-10 CN CN201621111661.2U patent/CN206192618U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108760216A (en) * | 2018-04-10 | 2018-11-06 | 东北大学 | Based on subway tunnel rig for model test and its test method as dynamical phase |
| CN108760216B (en) * | 2018-04-10 | 2019-11-08 | 东北大学 | Based on subway tunnel rig for model test and its test method as dynamical phase |
| CN110274777A (en) * | 2019-06-30 | 2019-09-24 | 西南交通大学 | Rail vehicle air pressure wave in tunnel testing stand and method |
| CN115165289A (en) * | 2022-09-07 | 2022-10-11 | 中国航空工业集团公司沈阳空气动力研究所 | Ultrasonic explosion phenomenon wind tunnel test simulation system and method |
| CN115165289B (en) * | 2022-09-07 | 2022-11-18 | 中国航空工业集团公司沈阳空气动力研究所 | Ultrasonic explosion phenomenon wind tunnel test simulation system and method |
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