CN108709534A - Shield tunnel construction stress deformation indoor model test device and its installation method - Google Patents
Shield tunnel construction stress deformation indoor model test device and its installation method Download PDFInfo
- Publication number
- CN108709534A CN108709534A CN201810681642.0A CN201810681642A CN108709534A CN 108709534 A CN108709534 A CN 108709534A CN 201810681642 A CN201810681642 A CN 201810681642A CN 108709534 A CN108709534 A CN 108709534A
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- model
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- jurisdiction
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- foil gauge
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/32—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring the deformation in a solid
Abstract
The embodiment of the invention discloses shield tunnel construction stress deformation indoor model test device and its installation methods, tunnel model is located in model slot, displacement meter and foil gauge are set on tunnel model, displacement meter, foil gauge and data collecting instrument connect, and can monitor the vertical and horizontal deformation evolution situation after tunnel model stress in real time comprehensively；Soil layer is located at around the tunnel model, restores true tunnel surrounding soil property；Pressure apparatus is located on soil layer, for simulating the interim Loading of earth's surface；Model test apparatus is pressed to be designed with the geometric similarity ratio of actual tunnel, the unit weight likelihood ratio, ensure that the consistency with prototype tunnel；By studying in the case where simulating earth's surface preloading, tunnel segment structure opening, faulting of slab ends, bolt internal force, section of jurisdiction stress, convergent deformation situation obtain shield tunnel construction Deformation evolution；On this basis, degree of injury of the evaluation section of jurisdiction under surface load, offers reference for Practical Project.
Description
Technical field
The present invention relates to tunnel traffic modelling technique field, particularly relate under a kind of earth's surface temporary load(ing) effect
Shield tunnel construction stress deformation indoor model test device.
Background technology
Under the interim preloading of earth's surface, the model investigation of duct pieces of shield tunnel vertical and horizontal deformation evolution mechanism is typically
It is carried out with native box-shaped formula, model is placed in experiment soil medium.Because of the influence of the factors such as water content in Rock And Soil, model test mistake
The acquisition difficulty of the data such as ess-strain is larger in journey；Shield tunnel construction Deformation evolution and section of jurisdiction are unable to get in earth's surface
Degree of injury under load.
Invention content
In view of this, the embodiment provides one kind being used to simulate the lower shield tunnel of temporary load(ing) effect indoors
The model test apparatus of road structure stress deformation.
In order to solve the above technical problems, technical solution used in the embodiment of the present invention is, shield tunnel construction stress deformation
Indoor model test device, including model slot, tunnel model, soil layer, pressure apparatus；The tunnel model is located at the model slot
It is interior, displacement meter and foil gauge are set on the tunnel model, and the displacement meter, foil gauge and data collecting instrument connect；The soil
Layer is located at around the tunnel model；The pressure apparatus is located at tunnel model soil layer surface.
Preferably, the tunnel model further includes bolt, section of jurisdiction, the displacement meter and foil gauge, and the tunnel passes through pipe
Piece and bolt are spliced, the symmetrical circumferential laying foil gauge in periphery medial and lateral of the section of jurisdiction, the cloth up and down of the section of jurisdiction
If the displacement meter.
Preferably, the pressure apparatus includes pressure gauge, jack, pressure plate, and the pressure plate is located at the tunnel mould
On soil layer above type, the pressure gauge is located on the pressure plate, and the jack is located on the pressure gauge, and top is set
Reaction frame is set, the reaction frame is connect with the top of the steelframe.
Preferably, the babinet for the top end opening that the model slot connects into for steel plate, one week setting rib steel of the steel plate, two
Steelframe is arranged in side, and the steelframe is connect with the rib steel.
The embodiment of the present invention additionally provides a kind of installation method of model test apparatus, includes the following steps：
(1) section of jurisdiction modelling；A certain proportion of mortar is prepared, pours into a mould to form section of jurisdiction by segment die；
(2) model slot is installed；The steel plate of pre-set dimension is connected into the babinet of upper end opening, rib is set around surface of steel plate
Steelframe is arranged in two sides in steel, and the steelframe is connect with the rib steel, and filling sand is in model slot；
(3) tunnel model is installed；Tunnel model is placed in model slot, tunnel model section of jurisdiction inside with 90 ° of circle
Heart angle is distributed displacement meter, with the symmetrical setting foil gauge in edge in 45 ° of central angle outside in section of jurisdiction；It is vertical in tunnel model
The foil gauge is set on the connection bolt of connector and on the connection bolt of girth joint；The foil gauge, displacement meter with it is outer
Portion's data collecting instrument connection；
(4) it is laid with soil layer；It is laid with soil layer above the tunnel model；
(5) pressure apparatus is installed；Pressure plate is set in the middle part of the surface of the tunnel model, is arranged on the pressure plate
Jack is arranged on the pressure gauge in pressure gauge, and reaction frame, the reaction frame and the steelframe is arranged in the top of jack
Top connection.
Compared with the relevant technologies, the advantageous effect of technical solution used in the embodiment of the present invention is, the embodiment of the present invention
Shield tunnel construction stress deformation indoor model test device, including model slot, tunnel model, soil layer, pressure apparatus, foil gauge
And displacement meter；The tunnel model is located in the model slot, and displacement meter and foil gauge, institute's rheme are arranged on the tunnel model
Meter, foil gauge and data collecting instrument is moved to connect；The soil layer is located above the tunnel model；The pressure apparatus is located at soil layer
Surface；Apparatus structure is simple, and model test apparatus is pressed to be designed with the geometric similarity ratio of actual tunnel, the unit weight likelihood ratio, ensure that
With the consistency of prototype tunnel；Displacement meter, foil gauge are set in tunnel model, tunnel model stress can be monitored in real time comprehensively
Vertical and horizontal deformation evolution situation afterwards；Pressure apparatus contributes to the application to tunnel model power in the top of tunnel model,
More can accurate simulation go out the interim Loading of earth's surface.
Description of the drawings
Fig. 1 is the structural schematic diagram of the embodiment of the present invention；
Fig. 2 is the section of jurisdiction circumferential direction measuring point situation schematic diagram of the embodiment of the present invention；
Fig. 3 is the connection bolt measuring point schematic diagram of the embodiment of the present invention.
Wherein, model slot 1, tunnel model 2, section of jurisdiction 3, soil layer 4, steelframe 5, reaction frame 6, pressure gauge 7, jack 8, pressurization
Plate 9, data collecting instrument 10, rib steel 11, girth joint 12, landing edge 13, displacement meter 14, foil gauge 15, connection bolt 16.
Specific implementation mode
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with attached drawing to embodiment party of the present invention
Formula is further described.
Referring to FIG. 1, the embodiment provides shield tunnel construction stress deformation indoor model test device, packet
Include model slot 1, tunnel model 2, soil layer 4, pressure apparatus；The tunnel model 2 is located in the model slot 1, the tunnel mould
Displacement meter 14 and foil gauge 15 are set in type 2, and the displacement meter 14, foil gauge 15 are connect with data collecting instrument 10, in real time comprehensively
The stress data changing value of ground monitoring acquisition tunnel model 2；The soil layer 4 is located at the top of the tunnel model 2；The pressure
Device is located on the soil layer 4, and pressure apparatus simulates the interim preloading of earth's surface to tunnel model applied force.The embodiment of the present invention
Model test apparatus is 1 with the geometric similarity ratio of actual tunnel prototype, intensity, stress, cohesiveness, the elasticity modulus likelihood ratio:
10, and the unit weight likelihood ratio, Poisson's ratio, strain, the angle of friction likelihood ratio are 1:1.Can preferably simulation under the interim preloading of earth's surface,
Vertical and horizontal deformation evolution situation after 2 stress of tunnel model provides reliable data for actual tunnel engineering and supports.
Further, the tunnel model 2 includes bolt, multiple sections of jurisdiction 3, and the section of jurisdiction 3 is spliced to form more by bolt 16
The tunnel model 2 of ring, the periphery medial and lateral of the section of jurisdiction 3 it is symmetrical it is circumferential lay the foil gauge 15, the section of jurisdiction 3 up and down
Lay the displacement meter 14.
Further, pass through girth joint 12, longitudinal direction between circumferential adjacent section of jurisdiction 3 and the adjacent section of jurisdiction 3 of longitudinal direction respectively
Connector 13 connects, and the girth joint 12, landing edge 13 are connected by connecting bolt 16.
The inside of tunnel model 2 is distributed displacement meter 14 with 90 ° of central angle, with 45 ° of central angle in the interior outside in section of jurisdiction 3
The symmetrical setting foil gauge 15 in edge, wherein displacement meter 4 totally 4, totally 8 pairs of foil gauge 15, in the interface that section of jurisdiction 3 is obtained with this
Power；
Further, the pressure apparatus includes pressure gauge 7, jack 8, pressure plate 9, and the pressure plate is located at the tunnel
On the soil layer 4 of 2 top of road model, the pressure gauge 7 is located on the pressure plate 9, and the jack 8 is located at the pressure gauge 7
On, reaction frame 6 is arranged in top, and the reaction frame 6 is connect with the top of the steelframe 5.The size of the pressure plate 9 is 80cm
×60cm。
Further, the model slot 1 is the babinet for the top end opening that steel plate connects into, one week setting rib steel of the steel plate
11, steelframe 5 is arranged in two sides, and the steelframe 5 is connect with the rib steel 11.The size of the model slot 1 be 2.4m × 1.5m ×
1.8m。
The embodiment of the present invention additionally provides the installation method of shield tunnel construction stress deformation indoor model test device, packet
Include following steps：
(1) 3 modelling of section of jurisdiction；A certain proportion of mortar is prepared, section of jurisdiction 3 is formed by 3 die casting of section of jurisdiction；
(2) installation model slot 1；The steel plate of pre-set dimension is connected into the babinet of 2.4m × 1.5m × 1.8m upper end openings,
Rib steel 11 is set around surface of steel plate, steelframe 5 is set in two sides, the steelframe 5 is connect with the rib steel 11, and filling sand exists
In model slot 1；The filling thickness of sand is 50cm, by the real density for sieving rain method calibration control sand；
(3) tunnel model 2 is installed；The section of jurisdiction 3 is spliced to form polycyclic tunnel model 2 by bolt；
Specifically, displacement meter 14 is distributed with 90 ° of central angle in the inside of the section of jurisdiction of tunnel model 23, with 45 ° of the center of circle
The symmetrical setting foil gauge 15 in edge in angle outside in section of jurisdiction 3, wherein displacement meter 4 totally 4, totally 8 pairs of foil gauge 15, with this
Obtain the interface internal force of section of jurisdiction 3；The foil gauge 15, displacement meter 14 are connect with external data Acquisition Instrument 10；Monitoring acquisition in real time
Vertical and horizontal deformation evolution situation after 2 stress of tunnel model；
(4) it is laid with soil layer 4；Soil layer 4 is laid with above the tunnel model 2；The thickness of soil layer 4 is the fine sand of 50cm, is led to
The real density of rain method of being sieved calibration control sand；
(5) pressure apparatus is installed；Pressure plate 9, the size of pressure plate 9 are set in the middle part of the surface of the tunnel model 2
For 80cm × 60cm, pressure gauge 7 is set on the pressure plate 9, jack 8 is set on the pressure gauge 7, in jack 8
Reaction frame 6 is arranged in top, and the reaction frame 6 is connect with the top of the steelframe 5.The setting of reaction frame 6 contributes to the application of power,
More can accurate simulation go out under the interim preloading of earth's surface, 3 vertical and horizontal deformation evolution situation of duct pieces of shield tunnel.
Indoor model test device through the embodiment of the present invention is studied under earth's surface preloading, and 3 structure of section of jurisdiction opens, is wrong
Platform, bolt internal force, 3 stress of section of jurisdiction, convergent deformation, obtain shield tunnel construction Deformation evolution.On this basis, evaluation pipe
Degree of injury of the piece 3 under surface load, offers reference for Practical Project.
Herein, the nouns of locality such as involved front, rear, top, and bottom are to be located in figure with parts in attached drawing and zero
Part mutual position defines, only for the purpose of expressing the technical solution clearly and conveniently.It should be appreciated that the noun of locality
Use should not limit the claimed range of the application.
In the absence of conflict, the feature in embodiment and embodiment herein-above set forth can be combined with each other.
The foregoing is merely presently preferred embodiments of the present invention, is not intended to limit the invention, it is all the present invention spirit and
Within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention.
Claims (8)
1. shield tunnel construction stress deformation indoor model test device, characterized in that including model slot, tunnel model, soil layer,
Pressure apparatus, displacement meter and foil gauge；The tunnel model is located in the model slot, and displacement meter is arranged on the tunnel model
With foil gauge, the displacement meter, foil gauge and data collecting instrument connect；The soil layer is located at around the tunnel model；It is described
Pressure apparatus is located on the soil layer.
2. shield tunnel construction stress deformation indoor model test device according to claim 1, characterized in that the tunnel
Road model includes multiple sections of jurisdiction, and the section of jurisdiction is bolted, and assembly forms polycyclic tunnel model；The periphery of the section of jurisdiction
The symmetrical circumferential laying foil gauge in medial and lateral, the surrounding of the section of jurisdiction lay the displacement meter.
3. shield tunnel construction stress deformation indoor model test device according to claim 2, characterized in that the tunnel
Road model is made of polycyclic section of jurisdiction, and section of jurisdiction quantity is determined according to realistic simulation length of tunnel.The inside of section of jurisdiction is with 90 ° of central angle
It is distributed displacement meter, with the symmetrical setting foil gauge in edge in 45 ° of central angle outside in section of jurisdiction, wherein per endless tube piece arrangement
Displacement meter totally 4, totally 8 pairs of foil gauge；On the connection bolt of tunnel model landing edge and on the connection bolt of girth joint
The foil gauge is set.
4. shield tunnel construction stress deformation indoor model test device according to claim 1, characterized in that the mould
Type groove is the babinet for the top end opening that steel plate connects into, and one week setting rib steel of the steel plate, steelframe, the steelframe is arranged in two sides
It is connect with the rib steel.
5. shield tunnel construction stress deformation indoor model test device according to claim 1 or 4, characterized in that institute
The size for stating model slot is 2.4m × 1.5m × 1.8m.
6. shield tunnel construction stress deformation indoor model test device according to claim 4, characterized in that the pressure
Power apparatus includes pressure gauge, jack, pressure plate, and the pressure plate is located on the soil layer above the tunnel model, the pressure
Power meter is located on the pressure plate, and the jack is located on the pressure gauge, top be arranged reaction frame, the reaction frame with
The top of the steelframe connects.
7. shield tunnel construction stress deformation indoor model test device installation method, includes the following steps：
(1) section of jurisdiction modelling；A certain proportion of mortar is prepared, steel reinforcement cage is made using iron wire, shape is poured into a mould by segment die
At section of jurisdiction；
(2) model slot is installed；The steel plate of pre-set dimension is connected into the babinet of upper end opening, rib steel is set around surface of steel plate,
Steelframe is set in two sides, the steelframe is connect with the rib steel, and filling sand is in model slot；
(3) tunnel model is installed；Tunnel model is formed using pipe sheet assembling, the tunnel model is placed in the model slot；
(4) it is laid with soil layer；It is laid with sand around the tunnel model；
(5) pressure apparatus is installed；Pressure plate is set in the middle part of the surface of the tunnel model, pressure is set on the pressure plate
Meter, is arranged jack on the pressure gauge, and reaction frame, the top of the reaction frame and the steelframe is arranged in the top of jack
End connection.
8. shield tunnel construction stress deformation indoor model test device installation method according to claim 7, feature
It is that in the step (3), tunnel model is multiring structure, displacement is distributed with 90 ° of central angle in the inside of tunnel model section of jurisdiction
Meter, with the symmetrical setting foil gauge in edge in 45 ° of central angle outside in section of jurisdiction；In the connection of tunnel model landing edge
The foil gauge is set on bolt and on the connection bolt of girth joint；The foil gauge, displacement meter and external data Acquisition Instrument
Connection.
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|---|---|---|---|
| CN201810681642.0A CN108709534B (en) | 2018-06-27 | 2018-06-27 | Shield tunnel structure stress deformation indoor model test device and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810681642.0A CN108709534B (en) | 2018-06-27 | 2018-06-27 | Shield tunnel structure stress deformation indoor model test device and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108709534A true CN108709534A (en) | 2018-10-26 |
| CN108709534B CN108709534B (en) | 2023-08-04 |
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| CN201810681642.0A Active CN108709534B (en) | 2018-06-27 | 2018-06-27 | Shield tunnel structure stress deformation indoor model test device and installation method thereof |
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Cited By (16)
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| CN109357939A (en) * | 2018-12-12 | 2019-02-19 | 中铁十八局集团有限公司 | Shield sky pushes away field testing procedure |
| CN109374865A (en) * | 2018-12-07 | 2019-02-22 | 华侨大学 | A kind of shield tunnel scaled model considering curved bolt clipping forcee and production method |
| CN109520851A (en) * | 2018-12-12 | 2019-03-26 | 中铁十八局集团有限公司 | Section of jurisdiction faulting of slab ends testing method |
| CN109556903A (en) * | 2019-01-25 | 2019-04-02 | 济南大学 | Shield tunnel vertical structure character model test apparatus and its application method |
| CN109556964A (en) * | 2018-11-06 | 2019-04-02 | 宁波大学 | A kind of monitor control system of the tunnel model test platform based on threedimensional model |
| CN109826633A (en) * | 2019-03-06 | 2019-05-31 | 青岛理工大学 | Existing shield tunnel simulator and analogy method are worn under a kind of shield machine |
| CN110284530A (en) * | 2019-05-17 | 2019-09-27 | 同济大学 | In conjunction with the Multifunctional assembled model test case apparatus and application in foundation pit and tunnel |
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| CN110529127A (en) * | 2019-09-10 | 2019-12-03 | 西南石油大学 | A kind of the shield driving experimental rig and method of simulated formation protuberance |
| CN112050724A (en) * | 2020-08-05 | 2020-12-08 | 南通职业大学 | Deformation detection device and deformation detection method for building structure |
| CN112903459A (en) * | 2021-02-02 | 2021-06-04 | 中国电建集团华东勘测设计研究院有限公司 | Visual test device and method for simulating influence of earth surface overload on existing shield tunnel structure |
| CN113504122A (en) * | 2021-06-30 | 2021-10-15 | 中铁十四局集团大盾构工程有限公司 | Tunnel segment upper soil body load deformation experimental device and method |
| CN114199187A (en) * | 2021-11-29 | 2022-03-18 | 宁波市轨道交通集团有限公司 | Shield tunnel model test device and method |
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| CN114260847A (en) * | 2021-12-16 | 2022-04-01 | 中铁隧道局集团有限公司 | Assembling system and assembling method of horizontal vacuum tunnel detection model |
| CN114441313A (en) * | 2022-01-23 | 2022-05-06 | 中国地质大学（武汉） | Mine method tunnel excavation underpinning bridge pile foundation experiment model and method |
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| CN109556964A (en) * | 2018-11-06 | 2019-04-02 | 宁波大学 | A kind of monitor control system of the tunnel model test platform based on threedimensional model |
| CN109556964B (en) * | 2018-11-06 | 2021-12-14 | 宁波大学 | Monitoring control system of tunnel model test platform based on three-dimensional model |
| CN109374865A (en) * | 2018-12-07 | 2019-02-22 | 华侨大学 | A kind of shield tunnel scaled model considering curved bolt clipping forcee and production method |
| CN109357939A (en) * | 2018-12-12 | 2019-02-19 | 中铁十八局集团有限公司 | Shield sky pushes away field testing procedure |
| CN109520851A (en) * | 2018-12-12 | 2019-03-26 | 中铁十八局集团有限公司 | Section of jurisdiction faulting of slab ends testing method |
| CN109357939B (en) * | 2018-12-12 | 2023-11-21 | 中铁十八局集团有限公司 | Shield air-pushing field test method |
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| CN109556903A (en) * | 2019-01-25 | 2019-04-02 | 济南大学 | Shield tunnel vertical structure character model test apparatus and its application method |
| CN109826633A (en) * | 2019-03-06 | 2019-05-31 | 青岛理工大学 | Existing shield tunnel simulator and analogy method are worn under a kind of shield machine |
| CN110284530A (en) * | 2019-05-17 | 2019-09-27 | 同济大学 | In conjunction with the Multifunctional assembled model test case apparatus and application in foundation pit and tunnel |
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| CN110529127A (en) * | 2019-09-10 | 2019-12-03 | 西南石油大学 | A kind of the shield driving experimental rig and method of simulated formation protuberance |
| CN112050724A (en) * | 2020-08-05 | 2020-12-08 | 南通职业大学 | Deformation detection device and deformation detection method for building structure |
| CN112903459A (en) * | 2021-02-02 | 2021-06-04 | 中国电建集团华东勘测设计研究院有限公司 | Visual test device and method for simulating influence of earth surface overload on existing shield tunnel structure |
| CN113504122A (en) * | 2021-06-30 | 2021-10-15 | 中铁十四局集团大盾构工程有限公司 | Tunnel segment upper soil body load deformation experimental device and method |
| CN114199187A (en) * | 2021-11-29 | 2022-03-18 | 宁波市轨道交通集团有限公司 | Shield tunnel model test device and method |
| CN114199187B (en) * | 2021-11-29 | 2024-01-16 | 宁波市轨道交通集团有限公司 | Shield tunnel model test device and method |
| CN114198107A (en) * | 2021-12-13 | 2022-03-18 | 西安交通大学 | Multifunctional reduced-scale shield model free of shield machine model and test method thereof |
| CN114260847A (en) * | 2021-12-16 | 2022-04-01 | 中铁隧道局集团有限公司 | Assembling system and assembling method of horizontal vacuum tunnel detection model |
| CN114441313A (en) * | 2022-01-23 | 2022-05-06 | 中国地质大学（武汉） | Mine method tunnel excavation underpinning bridge pile foundation experiment model and method |
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