CN107271128A - It is a kind of to simulate the experimental rig that the changing of the relative positions of reversed fault stick-slip triggers Chi-chi earthquake - Google Patents
It is a kind of to simulate the experimental rig that the changing of the relative positions of reversed fault stick-slip triggers Chi-chi earthquake Download PDFInfo
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- CN107271128A CN107271128A CN201710512369.4A CN201710512369A CN107271128A CN 107271128 A CN107271128 A CN 107271128A CN 201710512369 A CN201710512369 A CN 201710512369A CN 107271128 A CN107271128 A CN 107271128A
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- 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
- G01M7/02—Vibration-testing by means of a shake table
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Abstract
The experimental rig that the changing of the relative positions of reversed fault stick-slip triggers Chi-chi earthquake is simulated the invention discloses a kind of, includes the cube structure experiment casing of upper surface open, experiment casing side surface lower portions set sideboard；The interior panel that extension is formed inside oriented chamber body is set above sideboard, and sideboard can be slided along interior panel and experiment casing lower surface；The simulation tomography for connecting its upper and lower surface is provided with chamber body；Top is provided through the simulation tunnel of simulation tomography in chamber body；Simulate tomography close to sideboard side and experiment interior between be upper disk, simulation tomography away from sideboard side and experiment interior between be lower wall；Simulate the pressure sensitive microexplosion explosion unit that multiple series connection are set in tomography below simulation tunnel；The present invention can really simulate the hair shake mechanism of the lower Chi-chi earthquake of reversed fault stick-slip effect, and result of the test is accurate, and cost is low.
Description
Technical field
The present invention relates to the experimental rig of tunnel seismic response, and in particular to one kind simulation reversed fault stick-slip changing of the relative positions triggers
The experimental rig of Chi-chi earthquake.
Background technology
With the development of Chinese Tunnel Engineering, security of the tunnel in the natural calamities such as earthquake is increasingly subject to the weight of people
Depending on；The two big main methods that layer during similar model test is researched and analysed as tunnel（That is layer during similar model test and numerical simulation）One of,
Because it has stronger intuitive and authenticity than numerical value emulation method, it is widely used in grinding for tunnel hazard prevention
In studying carefully；Model test method of the tunnel applied at present under earthquake motion effect is often shaketalle test, i.e., place tunnel
In model casing, model casing is placed on a vibration table；Shake table vibrates toward predetermined direction, then observes the deformation in tunnel and breaks
Bad feature；Due to generally one plane of shake table, therefore the direction of vibration of each position and speed all same, i.e. shake table thereon
What experiment was substantially simulated is the consistent excitation of seismic wave vertical incidence during earthquake motion at far field；But closely break in actual
In layer earthquake, it is in the nature Near-field ground motion, and seismic mechanism is that tomography produces creep under tectonic stress effect；Because hair shake is disconnected
The long-term creep of layer acts on and causes energy to be accumulated at tomography, finally occurs fault viscosity-sliding；The tomography rock mass under stick-slip effect
Rupture result in the generation of earthquake motion and the permanent displacement of earth's surface, and the position that tomography ruptures is that active fault stick-slip is made
With the hypocentral location for triggering earthquake motion；It will be apparent that this near field mode of vibration heterogeneous and the simulation far field applied at present
The shaking table model of vibrations is very different, and traditional shaketalle test effectively simulation game fault viscosity-sliding can not be made
With the seismic source mechanism for triggering anisotropically vibrations and earth's surface permanent displacement；Therefore existed with traditional shaketalle test to study tunnel
Seismic response under Chi-chi earthquake effect, its test method and result of the test therewith are all very irrational.
The content of the invention
The present invention is that can truly reflect that nearly tomography natively shakes the simulation reversed fault stick-slip changing of the relative positions initiation of seismic signature closely
The dynamic experimental rig of fault earthquake.
The technical solution adopted by the present invention is：It is a kind of to simulate the experiment dress that the changing of the relative positions of reversed fault stick-slip triggers Chi-chi earthquake
Put, include the cube structure experiment casing of upper surface open, experiment casing side surface lower portions set sideboard；Active catch
The interior panel that extension is formed inside oriented chamber body is set above plate, and sideboard can be along interior panel and experiment casing lower surface
Slide；The simulation tomography for connecting its upper and lower surface is provided with chamber body；Top is provided through in chamber body
Simulate the simulation tunnel of tomography；It is upper disk, mould that tomography top, which is simulated, between sideboard side and experiment interior
It is lower wall to intend between the remote sideboard side in tomography lower section and experiment interior；Set in simulation tomography below simulation tunnel
Put the pressure sensitive elementary errors destructor of multiple series connection.
Further, the experiment interior and interior panel set flexible absorbing energy layer away from sideboard side.
Further, it is provided with sliding layer between the simulation tomography and lower wall.
Further, the sideboard outer surface connection power rail, power rail connecting power device.
Further, the experiment box outer surface is provided with the fixed support for being fixed in ground.
Further, prepared screw-bolt hole is provided with the fixed support, passes through prepared screw-bolt hole and ground bolt connection.
Further, the strength of materials that the upper disk and lower wall are used is higher than simulation tomography.
The beneficial effects of the invention are as follows：
（1）Apparatus of the present invention can really simulate the hair shake mechanism of the lower Chi-chi earthquake of reversed fault stick-slip effect；
（2）Apparatus of the present invention can simulate earth's surface permanent displacement and the elastic wave that the lower Chi-chi earthquake of reversed fault stick-slip effect is produced
Influence to tunnel；
（3）The present apparatus is simple in construction, need not use shake table, can substantially reduce experimentation cost.
Brief description of the drawings
Fig. 1 is sectional view of the present invention.
Fig. 2 is front view of the present invention.
In figure：Panel in 1- experiment casings, 2-, 3- flexibility absorbing energy layers, 4- power rails, 5- sideboards, 6- fixed supports,
7- prepared screw-bolt holes, 8- simulation tunnels, 9- simulation tomographies, the upper disks of 10-, 11- pressure sensitive elementary errors destructors, 12- sliding layers,
13- lower walls.
Embodiment
The present invention will be further described with specific embodiment below in conjunction with the accompanying drawings.
As shown in Figure 1-2, it is a kind of to simulate the experimental rig that the changing of the relative positions of reversed fault stick-slip triggers Chi-chi earthquake, including upper table
The cube structure experiment casing 1 of face opening, the side surface lower portions of experiment casing 1 set sideboard 5；The top of sideboard 5
The interior panel 2 for setting the extension of the oriented inside of chamber body 1 to be formed, sideboard 5 can be along interior panel 2 and the experiment lower surface of casing 1
Slide；The simulation tomography 9 for connecting its upper and lower surface is provided with experiment casing 1；The experiment internal upper part of casing 1, which is provided with, to be worn
Cross the simulation tunnel 8 of simulation tomography 9；The top of simulation tomography 9 is between the side of sideboard 5 and the experiment inner surface of casing 1
Upper disk 10, is lower wall 13 between the remote side of sideboard 5 in the lower section of simulation tomography 9 and the experiment inner surface of casing 1；Simulate tomography 9
The interior lower section of simulation tunnel 8 sets the pressure sensitive elementary errors destructor 11 of the point shaped explosive charge composition of multiple series connection.
In use, experiment casing 1 is as support container, it constitutes the cube structure of an all round closure with sideboard 5；
Simulation tunnel 8, which is arranged on experiment casing 1 top, can ensure that it has certain buried depth and enough foundation soils.
Further, the experiment inner surface of casing 1 and interior panel 2 set flexible energy-absorbing away from the side of sideboard 5
Layer 3 uses polychlorostyrene benzene alkene cystosepiment, to be absorbed to the elastic wave for reaching experiment casing boundary, prevents the reflection of elastic wave.
Further, sliding layer 12 is provided between the simulation tomography 9 and lower wall 13, sliding layer 12 uses talcum powder,
Reduce the frictional force between tomography 9 and lower wall 13, disk and lower wall is easily produced the changing of the relative positions under external force.
Further, the outer surface of the sideboard 5 connection power rail 4, the connecting power device of power rail 4.
Further, experiment casing 1 outer surface is provided with the fixed support 6 for being fixed in ground；Remove
A number of fixed support is welded on power rail 4 and the side of sideboard 5, its excess-three side for testing casing 1
6；The quantity of fixed support 6 is arranged as required to.
Further, prepared screw-bolt hole 7 is provided with the fixed support 6, is connected by prepared screw-bolt hole 7 and ground bolt
Connect.
Further, the strength of materials that the upper disk 10 and lower wall 13 are used is used higher than simulation tomography 9, simulation tomography 9
The mixture filling of a certain proportion of blanc fixe, fine quartz sand, machine oil and flyash, it is relatively low to embody fault disruption zone band strength
And material it is loose the characteristics of.
In use, power rail 4 promotes the upper disk 10 of the extruding of sideboard 5, upper disk 10 and then extrusion simulation tomography 9 is removed；Set
Sliding layer 12, upper disk 10 has the trend moved upwards, produces earth's surface permanent displacement；With the increase of the displacement of sideboard 5,
Upper disk 10 and lower wall 13 are pressed further by simulating tomography 9 so that energy accumulation at simulation tomography 9, pressure increase；Eventually arrive at pressure
The detonation critical point of sensitive elementary errors destructor 11, causes pressure sensitive elementary errors destructor 11 to explode, and triggers simulation tomography 9 to break
Split, produce elastic wave inside experiment casing 1, vibratory response occurs therewith for simulation tunnel 8；And due to lower wall 13 and simulation tomography
9 are constrained by chamber body 1, and upper disk 10 under thrust and the double action of sliding layer 12 oriented edge parallel to simulation tomography 9
The trend that direction is moved upwards；Then the maximum pressure at simulation tomography 9 necessarily occurs in the bottom of simulation tomography 9；So pressure-sensitive
Declining, poor destructor 11 is inevitable to detonate since bottom；Because it is cascaded, so pressure sensitive elementary errors destructor
11 are detonated successively from bottom to top, and its burst time can be controlled by the arrangement of pressure sensitive elementary errors destructor 11, and then
Can make it that multistage is short, attenuation of seismic waves continuity is with being connected when holding, and the short-delay blasting effect of generation can simulate the ground in natural place
Shake effect；Elastic wave propagates to the position of simulation tunnel 8, and simulation tunnel 8 and the phase of pressure sensitive elementary errors destructor 11 from bottom to top
Every larger distance, when at BP to simulation tunnel, the vibrational waveform of generation can truly reflect tomography earthquake
Dynamic seismic signature.
When Specific construction makes, comprise the following steps that：
（1）The welding of experiment casing 1 and connected interior panel 2 is completed first；
（2）Experiment casing 1 is positioned on level ground, fixed by prepared screw-bolt hole 7 by casing 1 is tested with ground；Will be living
Dynamic baffle plate 5 is pulled out to testing the flush with outer surface of casing 1, completes the overall closing of experiment casing 1；
（3）In the experiment inner surface of casing 1, the upper surface of the inner surface of sideboard 5 and interior panel 2 is cementing certain thickness
Flexible energy-absorbing material, constitutes flexible absorbing energy layer 3；
（4）Lay the lower wall 13 of the lower section of simulation tunnel 8；
（5）Lay certain thickness sliding coating formation sliding layer 12；
（6）The simulation tomography 9 of the lower section of simulation tunnel 8 is laid, and pressure sensitive elementary errors is placed according to presupposed solution in simulation tomography 9
Use and be connected in series between destructor 11, pressure sensitive elementary errors destructor 11；
（7）Lay the upper disk 10 of the lower section of simulation tunnel 8；
（8）Lay simulation tunnel 8；
（9）Lay upper disk 1, simulation tomography 9, sliding coating and the lower wall 13 of the top of simulation tunnel 8；
（10）Place certain time so that each several part state tends to be steady in experiment casing 1；
（11）Power rail 4 promotes sideboard 5 according to predetermined displacement, until pressure sensitive elementary errors destructor 11 detonates；
（12）After the vibration of casing 1 to be tested stops, extracting the foil gauge being pasted onto in the lining cutting of simulation tunnel 8 and be embedded in stratum
In accelerometer data, data are counted, show that stress deformation of the simulation tunnel 8 under near-fault ground motion effect is special
The regularity of point and stratum acceleration.
The present invention can really simulate the hair shake mechanism of the lower Chi-chi earthquake of reversed fault stick-slip effect, and it is produced
Influence of the raw earth's surface permanent displacement and elastic wave to tunnel, and because the present invention need not use shake table, experimentation cost compared with
Traditional oscillating tables experiment is substantially reduced.
Claims (7)
1. a kind of simulate the experimental rig that the changing of the relative positions of reversed fault stick-slip triggers Chi-chi earthquake, it is characterised in that including upper surface
The cube structure experiment casing (1) of opening, experiment casing (1) side surface lower portions set sideboard (5)；Sideboard
(5) top sets the interior panel (2) that extension is formed inside oriented chamber body (1), sideboard (5) can along interior panel (2) and
Casing (1) lower surface is tested to slide；The simulation tomography (9) for connecting its upper and lower surface is provided with experiment casing (1)；Examination
Tryoff body (1) internal upper part is provided through the simulation tunnel (8) of simulation tomography (9)；Tomography (9) is simulated close to sideboard (5)
It is upper disk (10) between side and experiment casing (1) inner surface, simulation tomography (9) is away from sideboard (5) side and chamber
It is lower wall (13) between body (1) inner surface；Multiple the pressure-sensitive of series connection are set to decline below simulation tomography (9) interior simulation tunnel (8)
Destructor (11).
2. a kind of experimental rig for simulating reversed fault stick-slip changing of the relative positions initiation Chi-chi earthquake according to claim 1, its
It is characterised by, experiment casing (1) inner surface and interior panel (2) set flexible absorbing energy layer away from sideboard (5) side
(3)。
3. a kind of experimental rig for simulating reversed fault stick-slip changing of the relative positions initiation Chi-chi earthquake according to claim 1, its
It is characterised by, sliding layer (12) is provided between the simulation tomography (9) and lower wall (13).
4. a kind of experimental rig for simulating reversed fault stick-slip changing of the relative positions initiation Chi-chi earthquake according to claim 1, its
It is characterised by, sideboard (5) the outer surface connection power rail (4), power rail (4) connecting power device.
5. a kind of experimental rig for simulating reversed fault stick-slip changing of the relative positions initiation Chi-chi earthquake according to claim 1, its
It is characterised by, described experiment casing (1) outer surface is provided with the fixed support (6) for being fixed in ground.
6. a kind of experimental rig for simulating reversed fault stick-slip changing of the relative positions initiation Chi-chi earthquake according to claim 5, its
It is characterised by, prepared screw-bolt hole (7) is provided with the fixed support (6), is connected by prepared screw-bolt hole (7) and ground bolt
Connect.
7. a kind of experimental rig for simulating reversed fault stick-slip changing of the relative positions initiation Chi-chi earthquake according to claim 1, its
It is characterised by, the strength of materials that the upper disk (10) and lower wall (13) are used is higher than simulation tomography (9).
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| CN201710512369.4A CN107271128B (en) | 2017-06-29 | 2017-06-29 | Test device for simulating near fault seismic oscillation caused by reverse fault stick-slip dislocation |
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|---|---|---|---|
| CN201710512369.4A CN107271128B (en) | 2017-06-29 | 2017-06-29 | Test device for simulating near fault seismic oscillation caused by reverse fault stick-slip dislocation |
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| CN107271128A true CN107271128A (en) | 2017-10-20 |
| CN107271128B CN107271128B (en) | 2023-04-07 |
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| CN108489700A (en) * | 2018-05-11 | 2018-09-04 | 四川大学 | It is a kind of to simulate dynamic response test device and test method of the meizoseismal area tunnel by bottom entering type impact load |
| CN108593468A (en) * | 2018-03-30 | 2018-09-28 | 上海理工大学 | The model test apparatus that detonation load influences building and tunnel |
| CN108627313A (en) * | 2018-05-11 | 2018-10-09 | 四川大学 | A kind of dynamic response test device and test method that simulation meizoseismal area side slope is coupled by bottom entering type side direction type |
| CN108645587A (en) * | 2018-05-11 | 2018-10-12 | 四川大学 | It is a kind of to simulate dynamic response test device and test method of the meizoseismal area tunnel by lateral impact load |
| CN108663180A (en) * | 2018-05-11 | 2018-10-16 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | A kind of dynamic response test device and test method that simulation tunnel shakes by normal fault reversed fault hair |
| CN108680730A (en) * | 2018-06-19 | 2018-10-19 | 长安大学 | Simulator and analogy method are endangered in ground fissure place under a kind of seismic loading |
| CN108680323A (en) * | 2018-05-11 | 2018-10-19 | 四川省地质调查院 | A kind of dynamic response test device and test method that simulation tunnel shakes by strike-slip fault hair |
| CN108918060A (en) * | 2018-05-11 | 2018-11-30 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | A kind of dynamic response test device and test method that simulation tunnel is coupled by bottom entering type side direction type |
| CN108919339A (en) * | 2018-05-11 | 2018-11-30 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | It is a kind of simulation meizoseismal area side slope by lateral impact load dynamic response test device and test method |
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| CN112227433A (en) * | 2020-10-27 | 2021-01-15 | 长安大学 | Model test device and test method for pile foundation bearing capacity during fault zone dislocation |
| CN112557166A (en) * | 2020-11-19 | 2021-03-26 | 山东科技大学 | Loading buffer device and test system and method for fault simulation |
| CN113189302A (en) * | 2021-04-20 | 2021-07-30 | 山东大学 | Dynamic disaster testing system and method for water and mud inrush caused by deep tunnel crossing active fracture |
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| CN108593468A (en) * | 2018-03-30 | 2018-09-28 | 上海理工大学 | The model test apparatus that detonation load influences building and tunnel |
| CN108919339A (en) * | 2018-05-11 | 2018-11-30 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | It is a kind of simulation meizoseismal area side slope by lateral impact load dynamic response test device and test method |
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| CN108627313B (en) * | 2018-05-11 | 2019-09-10 | 四川大学 | A kind of dynamic response test device and test method that simulation meizoseismal area side slope is coupled by bottom entering type side direction type |
| CN108680323A (en) * | 2018-05-11 | 2018-10-19 | 四川省地质调查院 | A kind of dynamic response test device and test method that simulation tunnel shakes by strike-slip fault hair |
| CN108627313A (en) * | 2018-05-11 | 2018-10-09 | 四川大学 | A kind of dynamic response test device and test method that simulation meizoseismal area side slope is coupled by bottom entering type side direction type |
| CN108680323B (en) * | 2018-05-11 | 2019-09-10 | 四川省地质调查院 | A kind of dynamic response test device and test method that simulation tunnel shakes by strike-slip fault hair |
| CN108918060A (en) * | 2018-05-11 | 2018-11-30 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | A kind of dynamic response test device and test method that simulation tunnel is coupled by bottom entering type side direction type |
| CN108663180B (en) * | 2018-05-11 | 2019-09-10 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | A kind of dynamic response test device and test method that simulation tunnel shakes by normal fault reversed fault hair |
| CN108489700A (en) * | 2018-05-11 | 2018-09-04 | 四川大学 | It is a kind of to simulate dynamic response test device and test method of the meizoseismal area tunnel by bottom entering type impact load |
| CN108645587B (en) * | 2018-05-11 | 2019-09-10 | 四川大学 | It is a kind of simulation meizoseismal area tunnel by lateral impact load dynamic response test device and test method |
| CN108918060B (en) * | 2018-05-11 | 2019-09-10 | 中国地质调查局成都地质调查中心（西南地质科技创新中心） | A kind of dynamic response test device and test method that simulation tunnel is coupled by bottom entering type side direction type |
| CN108489700B (en) * | 2018-05-11 | 2019-09-10 | 四川大学 | It is a kind of simulation meizoseismal area tunnel by bottom entering type impact load dynamic response test device and test method |
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| CN112227433B (en) * | 2020-10-27 | 2021-08-24 | 长安大学 | Model test device and test method for pile foundation bearing capacity during fault zone dislocation |
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| CN113189302B (en) * | 2021-04-20 | 2023-06-02 | 山东大学 | System and method for testing dynamic disasters caused by water and mud burst during crossing of movable fracture of deep buried tunnel |
| CN113189302A (en) * | 2021-04-20 | 2021-07-30 | 山东大学 | Dynamic disaster testing system and method for water and mud inrush caused by deep tunnel crossing active fracture |
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