CN109115530A - A kind of system of tunnel lining structure stress field transparence display and quantitatively characterizing - Google Patents
A kind of system of tunnel lining structure stress field transparence display and quantitatively characterizing Download PDFInfo
- Publication number
- CN109115530A CN109115530A CN201810876996.0A CN201810876996A CN109115530A CN 109115530 A CN109115530 A CN 109115530A CN 201810876996 A CN201810876996 A CN 201810876996A CN 109115530 A CN109115530 A CN 109115530A
- Authority
- CN
- China
- Prior art keywords
- test model
- stress
- jurisdiction
- plane
- liner structure
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
This application discloses the systems of a kind of tunnel lining structure stress field transparence display and quantitatively characterizing, comprising: plane stress test model, Plane Strain Test model, two pieces of composite baffles, Biaxial synchronous plane loading tester, controller and processor；Wherein: plane stress test model and Plane Strain Test model constitute test model, two pieces of composite baffles are for fixing test model, test model is held in Biaxial synchronous plane loading tester, controller controls the work of Biaxial synchronous plane loading tester, export load-deformation curve, four-stepped switching policy and monochromatic six steps phase shift method in combination with white light obtain the striped picture under each barometric gradient, processor is based on striped picture and obtains the distribution of whole audience deviator stress, and whole audience stress distribution of test model under the conditions of different loads is obtained using stress separation means.The application being capable of accurate, quick, cheap, intuitive quantitatively characterizing liner structure Stress Field Distribution rule.
Description
Technical field
It is transparent aobvious that this application involves static stress field measurement technical fields more particularly to a kind of tunnel lining structure stress field
Show and the system of quantitatively characterizing.
Background technique
With the sustainable development of China's economic level, subway or light rail become friendship necessary to people's daily life trip
One of logical tool.During construction of subway, determine that tunnel piercing scheme is a very important project.Due to speed of application
Comparatively fast, the effect of surface structures can be ignored substantially, shield machine driving method is in metro tunnel excavation technology at present
Occupy absolutely leading status, in metro shield driving tunnel it is usually necessary to use liner structure come the country rock around supporting with
Prevent it from collapsing.When carrying out the design of tunnel surrounding liner structure, the deformation and failure of only grasp liner structure is regular,
It just can determine that reasonable structural design scheme.And when studying the deformation and failure rule of liner structure, a crucial science
It is exactly the stress field distribution and Evolution for needing liner structure under accurate characterization load action with engineering problem.Due to lining
Build the complexity and particularity of structure, so far, people can not yet find a kind of its stress field distribution of accurate characterization and
The research method of Evolution.
Currently, the main approaches for obtaining the stress field of liner structure include method for numerical simulation, experimental determination side
There are a series of shortcomings in method and Monitoring During The Access method etc., these methods.In method for numerical simulation, numerical value is calculated
The contact of deviation, grid covering pattern, unit between geometrical characteristic and real structure caused by model simplification with separate, solve
A series of problems, such as algorithm, material parameter selection, constitutive relation determination, calculation scale and efficiency, is not satisfactorily resolved, especially
It is that calculated result hardly results in experiment or the verifying of site operation parameter has caused some disputes or query.For experimental determination
Method, processing method, material parameter, experiment condition, the precision of measuring instrument, load applying mode and the experimental facilities cloth of model
It sets, the dimensional effect that experimental model is intrinsic etc. can all affect greatly experiment test effect.Monitoring During The Access method tool
Have the shortcomings that investment is big, the period is long, measurement accuracy is affected by environment larger.
Therefore, for deficiency existing for above-mentioned various characterization liner structure Stress Field Distribution methods, develop a kind of accurate, fast
The new method of fast, cheap, intuitive quantitatively characterizing liner structure Stress Field Distribution rule is particularly important.
Summary of the invention
In view of this, this application provides the system of a kind of tunnel lining structure stress field transparence display and quantitatively characterizing,
It being capable of accurate, quick, cheap, intuitive quantitatively characterizing liner structure Stress Field Distribution rule.
This application provides the systems of a kind of tunnel lining structure stress field transparence display and quantitatively characterizing, comprising: plane
Stress test model, Plane Strain Test model, two pieces of composite baffles, Biaxial synchronous plane loading tester, controller and place
Manage device；Wherein:
The plane stress test model and Plane Strain Test model constitute test model；
Two pieces of composite baffles are for fixing test model；
The test model is held in Biaxial synchronous plane loading tester；
The controller controls the Biaxial synchronous plane loading tester work, exports load-deformation curve, ties simultaneously
The four-stepped switching policy and monochromatic six steps phase shift method for closing white light obtain the striped picture under each barometric gradient；
The processor is based on the striped picture and obtains the distribution of whole audience deviator stress, and is obtained using stress separation means
Whole audience stress distribution of test model under the conditions of different loads.
Preferably, the plane stress test model includes: liner structure and country rock；Wherein:
Liner structure includes: a block section of jurisdiction of binding, two adjacent block sections of jurisdiction and three calibrated bolck sections of jurisdiction, the block that binds
Using the white Nylon band connection with buckle between section of jurisdiction, adjacent block section of jurisdiction and calibrated bolck section of jurisdiction；
The liner structure and country rock are using the preferably high-intensitive glue sticking of plasticity.
Preferably, the Plane Strain Test model includes: liner structure and country rock；Wherein:
Liner structure includes: a block section of jurisdiction of binding, two adjacent block sections of jurisdiction and three calibrated bolck sections of jurisdiction, the block that binds
Using the white Nylon band connection with buckle between section of jurisdiction, adjacent block section of jurisdiction and calibrated bolck section of jurisdiction；
The liner structure and country rock are using the preferably high-intensitive glue sticking of plasticity；
The country rock is respectively arranged with a slotted hole on four angles.
Preferably, the composite baffle is made by cylindrical quartz plate insertion steel frame；
Padded coaming is equipped between the quartz plate and steel frame；
Four angles of the steel frame are respectively equipped with circular hole；
Two pieces of composite baffles pass through four bolt fastenings.
Preferably, the test model is by the high-precision layered stereoscopic molding 3D printer printing of more materials.
Preferably, the printed material of the section of jurisdiction of the liner structure is transparent photosensitive resin material.
Preferably, the printed material of the country rock is mixing material RGD8630.
In conclusion this application discloses the system of a kind of tunnel lining structure stress field transparence display and quantitatively characterizing,
It include: plane stress test model, Plane Strain Test model, two pieces of composite baffles, Biaxial synchronous plane loading tester, control
Device and processor processed；Wherein: the plane stress test model and Plane Strain Test model composition test model, described two pieces
Composite baffle is for fixing test model, and the test model is held in Biaxial synchronous plane loading tester, the control
Device controls the Biaxial synchronous plane loading tester work, load-deformation curve is exported, in combination with the four-step phase-shifting of white light
Method and monochromatic six steps phase shift method obtain the striped picture under each barometric gradient, and the processor is based on the striped picture
The distribution of whole audience deviator stress is obtained, and obtains whole audience stress of test model under the conditions of different loads using stress separation means
Distribution.System provided by the present application being capable of accurate, quick, cheap, intuitive quantitatively characterizing liner structure Stress Field Distribution rule.
Detailed description of the invention
In order to illustrate the technical solutions in the embodiments of the present application or in the prior art more clearly, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of application for those of ordinary skill in the art without creative efforts, can be with
It obtains other drawings based on these drawings.
Fig. 1 is a kind of structure of the system of tunnel lining structure stress field transparence display and quantitatively characterizing disclosed in the present application
Schematic diagram；
Fig. 2 is a kind of structural schematic diagram of plane stress test model disclosed in the present application；
Fig. 3 is a kind of structural schematic diagram of Plane Strain Test model disclosed in the present application；
Fig. 4 is a kind of structural schematic diagram of composite baffle disclosed in the present application；
Fig. 5 is Plane Strain Test overall structure diagram disclosed in the present application；
Fig. 6 is a kind of four-stepped switching policy light path arrangement schematic diagram of white light disclosed in the present application；
Fig. 7 is the monochromatic six steps phase shift method light path arrangement schematic diagram of one kind disclosed in the present application.
Specific embodiment
Below in conjunction with the attached drawing in the embodiment of the present application, technical solutions in the embodiments of the present application carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of embodiments of the present application, instead of all the embodiments.It is based on
Embodiment in the application, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall in the protection scope of this application.
For deficiency existing for the various characterization liner structure Stress Field Distribution methods of the prior art, develop a kind of accurate, fast
The new method of fast, cheap, intuitive quantitatively characterizing liner structure Stress Field Distribution rule is particularly important, and past people are very
The reason of considering this method less, causing such case mainly has following two points.
On the one hand, before there is 3D printing technique, it is difficult precisely to prepare the transparent mould containing labyrinth in the lab
Type.Traditional modelling technique excessively in, model is mainly poured by mold, then by by hand or machining made of,
Due to the limitation of process equipment, some subtle minor structures of prototype structure can only be removed, and cause structure stress and deformation point
Significant errors during analysis.On the other hand, due to some yet unresolved issues, including simplified model and true heterogeneous knot
The deviation of structure, the selection of suitable material parameter, determination of constitutive relation etc. are especially difficult in numerical value calculating in an experiment and existing
The occasion being verified in the test of field, the popularization and application of numerical analysis receive obstruction.So far there has been no a kind of experimental method energy
The stress field distribution and Evolution of liner structure under enough accurately intuitive displays and quantitatively characterizing load action.
By above situation it is found that the stress field distribution of liner structure and Evolution are unintelligible under load action, lead
Cause occurs many difficulties and error when determining structural design scheme.To solve this problem, there is an urgent need to develop a kind of accurate, straight
Sight, easy, cheap research method carry out the stress field of liner structure under transparence display and quantitatively characterizing load action, set for structure
Meter provides foundation.
It is previous it was verified that can intuitively, effectively characterize answering for liner structure under load action using experiment by photoelastic method
The field of force based on the three-dimensionalreconstruction and 3D printing technique having recently been developed, and combines digital photoelasticity experimental method, can make
In high precision, the photoelasticity liner structure experimental model of the high grade of transparency simultaneously observes its stress under load action to quantitative visualization
Field distribution feature and Evolution.In consideration of it, the present invention provides a kind of tunnel lining structure stress field transparence display and quantitative table
The method of sign.3D printing material of the colourless transparent material Vero Clear as liner structure model is chosen, is chosen by Vero
The mixing material that Clear and faint yellow translucent rubber class material Tango Plus are formulated by a certain percentage is as country rock mould
The printed material of type loads model using Biaxial synchronous plane loading experiment machine, the boundary condition of experiment and true lining
It is completely the same to build structure.In conjunction with the " four-stepped switching policy " and monochromatic " six step phase shift methods " of white light, clapped by wide-angle CCD camera
The different striped picture of ten width is taken the photograph, maximum shear stress is imported and solves in software, the distribution of whole audience deviator stress is obtained, reuses stress
Separation means obtain whole audience stress distribution of experimental model under the conditions of different loads, realize that tunnel lining structure stress field is saturating
Obviously show and quantitatively characterizing.
In order to be more clearly illustrated to the technical solution of the application, description in detail below:
As shown in FIG. 1 to FIG. 7, the system of a kind of tunnel lining structure stress field transparence display and quantitatively characterizing, comprising: flat
Face stress test model 101,102, two pieces of composite baffles 103 of Plane Strain Test model, Biaxial synchronous plane loading tester
104, controller 105 and processor 106；The application can make full use of it is described independently prepared by 3D printing technique it is transparent
Change lining segment model and country rock model, autonomous Design and the composite baffle processed, Biaxial synchronous plane is controlled by controller
Loading experiment machine, photoelastic equipment and wide-angle CCD camera shoot and export the photoelasticity fringe image of liner structure under load action,
It is that maximum shear stress solves in software that image, which is imported processor, obtains the distribution of whole audience deviator stress, reuses stress separation hand
Section obtains whole audience stress distribution of experimental model under the conditions of different loads, realizes tunnel lining structure stress field transparence display
And quantitatively characterizing.
Specifically, as shown in Fig. 2, plane stress experimental model, including by block section of jurisdiction 1 of binding, adjacent block section of jurisdiction 2, adjacent
The liner structure and country rock 7 that block section of jurisdiction 6, calibrated bolck section of jurisdiction 3, calibrated bolck section of jurisdiction 4 and calibrated bolck section of jurisdiction 6 are constituted.
As shown in figure 3, plane strain experimental model, including by block section of jurisdiction 1 of binding, adjacent block section of jurisdiction 2, adjacent block section of jurisdiction 6,
Liner structure, the country rock 7 of calibrated bolck section of jurisdiction 3, calibrated bolck section of jurisdiction 4 and the composition of calibrated bolck section of jurisdiction 6, symmetrical 8 He of slotted hole
Symmetrical slotted hole 8.
Specifically, plane stress experimental model and plane strain experimental model can be ground using U.S. STRATASYS company
The high-precision layered stereoscopic molding 3D printer of more materials of hair is printed, and printing error is no more than 14 μm.Liner structure
Section of jurisdiction material can select the transparent photosensitive resin material of Vero Clear, and static stress fringe value f0 is equal to 33.8N/mm, elasticity
Modulus E is equal to 3.1GPa, and Poisson's ratio μ is equal to 0.38, the relatively more identical rock type materials parameter of parameter.Section of jurisdiction is set at girth joint
Set connecting hole, including wedged hole and tie-hole, the two communicate, wedge-shaped pore size may is that radial × tangential × axial direction=4mm ×
(interior 3mm~outer 4mm) × 3mm, band pore size may is that radial × tangential × axial direction=2mm × 2mm × 3mm.In connecting hole
It can be filled by low intensive backing material SUP706.Country rock material can be chosen by Vero Clear and faint yellow translucent rubber
Mixing material RGD8630, the elastic modulus E 1.299GPa that glue class material Tango Plus is formulated by a certain percentage,
Poisson's ratio μ is equal to 0.432.The liner structure that printing is completed shows very high transparency, surface by polishing, polishing treatment
Flatness and preferable stress sensitivity.
Specifically, when preparing plane stress experimental model and plane strain experimental model, it can be according to practical shield method
Liner structure construction parameter and geologic parameter in Metro Tunnel of constructing, contract to experimental model size based on the theory of similarity
It is small, it is determined that the geometric parameter of liner structure model and country rock model.
Lining segment model designs suitable dimension connecting hole, and the geometrical characteristic and Practical Project of model at girth joint
In liner structure keep high consistency.For plane stress experimental model, country rock no setting is required bolt hole, and for plane
Experimental model is strained, slotted hole need to be set near four angles of country rock and passed through convenient for the bolt of big face baffle.
According to the three-dimensional digitalization model of design size figure creation section of jurisdiction and country rock in AutoCAD, then inputs 3D and beat
It is printed in print machine control software, setting section of jurisdiction material is Vero Clear, and country rock material is RGD8630, the connection of section of jurisdiction
It is filled in hole by backing material SUP706.
For the girth joint effect between the adjacent section of jurisdiction of liner structure in simulation Practical Project, single section of jurisdiction is existed respectively
In 3D printer complete printing, polished, polish after be spliced into complete liner structure, adjacent section of jurisdiction joint use band
The white Nylon band of buckle connects, and band sectional dimension can be set are as follows: wide × height=1.2 × 2.5mm.To consider practical work
Liner structure and country rock are assembled into an integral experiment mould by the Contact Effect and interaction of liner structure and country rock in journey
Type makes 22.5 ° of block section of jurisdiction deviation surface of binding, and using the preferably high-intensitive glue sticking of plasticity at the two contact surface, guarantees
Formed between liner structure surface and country rock surface it is good contact, the two can be effectively conducted stress and be assisted at contact surface
Modulation shape.
Specifically, plane strain experiment two pieces of composite baffles shown in Fig. 4 need to be used to clamp liner structure with constrain its two
A big face goes out in-plane displancement, as shown in figure 4, meeting baffle includes steel frame 10, inside groove 11, padded coaming 12, quartz plate 13,
The symmetrical bolt hole 15 up and down of outer groove 14 and four.The cylindrical stone that composite baffle is high by transparency, compression strength is high
English plate (diameter can be 158mm, and thickness can be 20~40mm) insertion steel frame is made, quartz plate and steel frame it
Between be equipped with 2mm thickness padded coaming, four angles of steel frame be respectively equipped with diameter can be 8.2mm circular hole (circle center distance
Steel frame side can be 20mm), four strength grades can be used tight for 8.8 grades of M8 bolt between two pieces of composite baffles
Gu can be pulled using digital display type torque to guarantee that fastening force size that each bolt provides is essentially equal and has enough precisions
Hand applies pretightning force to bolt, and according to the diameter of bolt and strength grade, the pretightning force size that torque wrench applies is 19~24N
m。
Specifically, used quartz glass plate light transmittance is high, compression strength is high, and hardness is big, after high-temperature heat treatment, nothing
Initial residual stress.By repeatedly testing, when finding with a thickness of 20~40mm, strain when by identical load action is smaller,
Can be neglected by the birefringence effect that material strain generates, can two, operative constraint plane strain model big faces plane position out
It moves, and the stressed cord in accurate transparence display lining model, realizes that experimental model stress field is saturating under plane strain loading environment
Obviously show and quantitatively characterizing.
High-precision polishing, polishing treatment are passed through in quartz glass plate surface and test model surface, and smoothness is very high,
Frictional force at the two contact surface is greatly reduced, and is influenced on the uniformity that model in experimentation deforms smaller.
Since quartz glass plate brittleness is stronger, punching will lead to intensity of the quartz plate at punching directly on its four angles
It substantially reduces, easily causes quartz plate that failure by shear occurs in the position, therefore can be using the compound of quartz plate insertion steel frame
Plate scheme is punched at four angles of steel frame, in quartz plate with filling padded coaming on steel frame contact surface to realize that flexibility connects
Touching, with this condition, quartz plate will not destroy.
It should be noted that constraint plane strain model two big faces go out the composite baffle structure of in-plane displancement because it is good
Translucency, lesser stripe interference and mantle friction effect, can also be used for other plane strain experiment by photoelastic method, including
All plane strain static state experiment by photoelastic method, and the plane strain Dynamic photoelasticity of cooperation dynamic disturbances device.Example
Miniature excavation robot is such as combined, the plane strain of top plate Dynamic stress field in transparence display and quantitatively characterizing coal body digging process
Dynamic photoelasticity；In conjunction with light-gas gun percussion mechanism, coarse fissure-plane under transparence display and quantitatively characterizing impact loading
Plane strain Dynamic photoelasticity of shearing slip Dynamic stress field etc..Device is widely used, solves current plane very well
Experiment by photoelastic method method can only simulate plane stress problem, the drawbacks of without analog plane strain problems, so that simulated conditions
It is more nearly real working condition, analog result is significant for instructing engineering site also more true and reliable.
In order to more clearly illustrate the technical solution of the application, further below to tunnel-liner knot disclosed in the present application
The course of work of the system of structure stress field transparence display and quantitatively characterizing is introduced.
Specifically, the course of work of the system of tunnel lining structure stress field transparence display and quantitatively characterizing includes following step
It is rapid:
A) construction parameter and geologic parameter based on liner structure in practical shield construction Metro Tunnel, determine root
The geometric parameter of the liner structure model and country rock model that obtain after reducing according to the theory of similarity, creates lining tube in AutoCAD
The three-dimensional digitalization model of piece and country rock, setting and the consistent connecting hole of full-scale condition at duct piece connector.For plane strain
Slotted hole need to be arranged near four angles of country rock and pass through and can effectively prevent in order to connecting the bolt of two pieces of composite baffles for experiment
Only bolt hinders straight down deformation of the country rock by load action when, to prevent integral experiment structure from lateral tilt and entirety occur
Larger lateral bending occurs when model is by load action, country rock bottom is made to keep flushing with composite baffle, gear is stretched out at the top of country rock
The length of plate is 4mm, and the length that baffle is stretched out at both ends is 1mm.
B) by the three-dimensional digitalization model input 3D printer control software of creation, setting section of jurisdiction uses Vero Clear
It prints, is filled in the connecting hole at duct piece connector using backing material SUP706, country rock is beaten using mixing material RGD8630
Print.The model surface that printing is completed is polished, polishing treatment, the backing material SUP706 in the connecting hole of section of jurisdiction uses hydrogen-oxygen
The mixed solution for changing sodium and sodium metasilicate is dissolved, and then section of jurisdiction model is placed in drying basin and conserves 3 days to eliminate inside it
Residual stress.Each section of jurisdiction is used the white Nylon band with buckle to connect and be assembled into complete lining cutting knot in joint
Then liner structure and country rock are assembled into an integral experiment model by structure, make block section of jurisdiction deviation surface 22.5 of binding, two
Using the preferably high-intensitive glue sticking of plasticity at person's contact surface, it ensure that and form good connect between lining cutting surface and country rock surface
Touching, the two can be effectively conducted power and compatible deformation at contact surface.
C) it is directed at transmittance photoelastic examination optical path, adjusts light source, each eyeglass of photoelastic equipment, experimental machine and wide-angle CCD
Integral experiment model is accurately held in Biaxial synchronous plane loading experiment machine, such as Fig. 6, Fig. 7 institute by the mutual distance of camera
Show.According to the boundary condition of the liner structure stress in practical shield tunnel project, experimental machine, adjustment left and right and bottom pressure are opened
The Normal Displacement of head, restricted model both ends and bottom makes experimental machine top ram apply uniformly distributed precompression to overall model；For
Plane strain experiment, first clamps experimental model using two pieces of composite baffles shown in Fig. 4, as shown in figure 5, then compound at two pieces
The M8 bolt that four strength grades are 8.8 grades is installed between baffle, pretightning force, root are applied to bolt using digital display type torque wrench
According to the diameter of bolt and strength grade, the pretightning force size that torque wrench applies is 19~24N m.
D) Biaxial synchronous plane loading experiment machine is opened, by computer control software operation experiments machine, makes its top pressure
Head is moved down to realize load, is loaded by the way of Bit andits control, loading speed 0.05mm/min, experimental machine can be real-time
The payload values for showing its top ram adjust the polariscope of photoelastic equipment and the angle of quarter wave plate when load reaches preset value
Degree, first shoots four width images under white light by wide-angle CCD camera, then shoots six width images under monochromatic light, is obtained ten
This ten width image is imported in the poster processing soft " digital photoelasticity V3.0 " and carries out calculating analysis, obtained by the different stripe pattern of width
It is distributed to whole audience shear stress and deviator stress, reuses " shear difference method " and carry out stress separation, obtain experimental model in difference
The whole audience components of stress under load-up condition.
In conclusion the system of a kind of tunnel lining structure stress field transparence display disclosed in the present application and quantitatively characterizing,
It can make full use of the transparence lining segment model independently prepared by 3D printing technique and country rock model, independently set
It counts and composite baffle, Biaxial synchronous plane loading experiment machine, photoelastic equipment and the wide-angle CCD camera processed shoots and export load
The photoelasticity fringe image for acting on lower liner structure, imports in the poster processing soft " digital photoelasticity V3.0 ", obtains whole audience master and answer
Power difference cloth reuses " shear difference method " and carries out stress separation, obtains the whole audience of experimental model under the conditions of different loads and answers
Force component realizes tunnel lining structure stress field transparence display and quantitatively characterizing.
Experimental model meets that Practical Project situation, reasonable, the easy to operate, result of experimental method design be accurate, quantitative analysis
Intuitively, testing cost is saved.
The experimental model of the application is printed by more material high-precision layered stereoscopic 3D printers, compares existing experimental model
Processing method, printer model dimension control is high, easy to process, and the mould processing period is greatly reduced and can print any
Labyrinth.
The lining segment printed material of the application uses the transparent photosensitive resin material of Vero Clear, and light transmittance and pressure are quick
Perception is higher.
The application is based on liner structure construction parameter and geologic parameter in practical shield construction Metro Tunnel, according to
The theory of similarity, which reduce, has determined the geometric parameter of liner structure model and country rock model, and lining segment model is in girth joint
Place is equipped with connecting hole, and experimental model has high consistency with the liner structure in Practical Project in geometrical characteristic.
The application by single section of jurisdiction respectively in 3D printer complete printing, polished, polish after be spliced into complete lining
Structure is built, adjacent section of jurisdiction is connected using band in joint, can effectively be simulated in practical shield tunnel project between adjacent section of jurisdiction
Girth joint effect.
Liner structure and country rock are assembled into an integral experiment model by the application, make block section of jurisdiction deviation surface of binding
22.5 °, using the preferably high-intensitive glue sticking of plasticity at the two contact surface, ensure that liner structure surface and country rock surface it
Between form good contact, the two can be effectively conducted stress and compatible deformation at contact surface, being capable of the practical work of Efficient Characterization
Contact Effect and interaction in journey between liner structure and country rock.
Liner structure is answered in plane in the stress field transparence display and quantitatively characterizing method analog Practical Project of the application
Mechanical behavior under the conditions of change, solving existing liner structure stress field characterizing method can not transparence display and quantitatively characterizing lining
The problem of building stress field of the structure under plane strain condition.
" four-stepped switching policy " that the stress field transparence display and quantitatively characterizing of the application is based primarily upon white light obtains model the
One (the second) principal stress direction angle and monochromatic " six step phase shift methods " obtains corresponding isochromatic package phasor, by image
Processing technique and maximum shear stress automatic calculation software obtain the distribution of whole audience deviator stress, reuse stress separation means, obtains
Whole audience stress distribution of experimental model under the conditions of different loads realizes tunnel lining structure stress field transparence display and quantitative table
Sign.Compared to existing liner structure stress field characterizing method, as the result is shown visual in image, operation high with accuracy of quantitative analysis
The advantages such as easy, favorable repeatability and testing cost are low.
Each embodiment in this specification is described in a progressive manner, the highlights of each of the examples are with other
The difference of embodiment, the same or similar parts in each embodiment may refer to each other.For device disclosed in embodiment
For, since it is corresponded to the methods disclosed in the examples, so being described relatively simple, related place is said referring to method part
It is bright.
Professional further appreciates that, unit described in conjunction with the examples disclosed in the embodiments of the present disclosure
And algorithm steps, can be realized with electronic hardware, computer software, or a combination of the two, in order to clearly demonstrate hardware and
The interchangeability of software generally describes each exemplary composition and step according to function in the above description.These
Function is implemented in hardware or software actually, the specific application and design constraint depending on technical solution.Profession
Technical staff can use different methods to achieve the described function each specific application, but this realization is not answered
Think beyond scope of the present application.
The step of method described in conjunction with the examples disclosed in this document or algorithm, can directly be held with hardware, processor
The combination of capable software module or the two is implemented.Software module can be placed in random access memory (RAM), memory, read-only deposit
Reservoir (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technology
In any other form of storage medium well known in field.
The foregoing description of the disclosed embodiments makes professional and technical personnel in the field can be realized or use the application.
Various modifications to these embodiments will be readily apparent to those skilled in the art, as defined herein
General Principle can be realized in other embodiments without departing from the spirit or scope of the application.Therefore, the application
It is not intended to be limited to the embodiments shown herein, and is to fit to and the principles and novel features disclosed herein phase one
The widest scope of cause.
Claims (7)
1. the system of a kind of tunnel lining structure stress field transparence display and quantitatively characterizing characterized by comprising plane stress
Test model, Plane Strain Test model, two pieces of composite baffles, Biaxial synchronous plane loading tester, controller and processor；
Wherein:
The plane stress test model and Plane Strain Test model constitute test model；
Two pieces of composite baffles are for fixing the test model；
The test model is held in Biaxial synchronous plane loading tester；
The controller controls the Biaxial synchronous plane loading tester work, load-deformation curve is exported, in combination with white
The four-stepped switching policy of light and monochromatic six steps phase shift method obtain the striped picture under each barometric gradient；
The processor is based on the striped picture and obtains the distribution of whole audience deviator stress, and obtains test using stress separation means
Whole audience stress distribution of model under the conditions of different loads.
2. system according to claim 1, which is characterized in that the plane stress test model include: liner structure and
Country rock；Wherein:
Liner structure includes: a block section of jurisdiction of binding, two adjacent block sections of jurisdiction and three calibrated bolck sections of jurisdiction, the block pipe that binds
Using the white Nylon band connection with buckle between piece, adjacent block section of jurisdiction and calibrated bolck section of jurisdiction；
The liner structure and country rock are using the preferably high-intensitive glue sticking of plasticity.
3. system according to claim 1, which is characterized in that the Plane Strain Test model include: liner structure and
Country rock；Wherein:
Liner structure includes: a block section of jurisdiction of binding, two adjacent block sections of jurisdiction and three calibrated bolck sections of jurisdiction, the block pipe that binds
Using the white Nylon band connection with buckle between piece, adjacent block section of jurisdiction and calibrated bolck section of jurisdiction；
The liner structure and country rock are using the preferably high-intensitive glue sticking of plasticity；
The country rock is respectively arranged with a slotted hole on four angles.
4. system according to claim 1, which is characterized in that the composite baffle is embedded in steel frame by cylindrical quartz plate
It is made；
Padded coaming is equipped between the quartz plate and steel frame；
Four angles of the steel frame are respectively equipped with circular hole；
Two pieces of composite baffles pass through four bolt fastenings.
5. system according to claim 2, which is characterized in that the test model is by the high-precision layered stereoscopic of more materials
Form 3D printer printing.
6. system according to claim 5, which is characterized in that the printed material of the section of jurisdiction of the liner structure is transparent light
Quick resin material.
7. system according to claim 5, which is characterized in that the printed material of the country rock is mixing material RGD8630.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810876996.0A CN109115530B (en) | 2018-08-03 | 2018-08-03 | System for transparent display and quantitative characterization of stress field of tunnel lining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810876996.0A CN109115530B (en) | 2018-08-03 | 2018-08-03 | System for transparent display and quantitative characterization of stress field of tunnel lining structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109115530A true CN109115530A (en) | 2019-01-01 |
| CN109115530B CN109115530B (en) | 2020-06-30 |
Family
ID=64852694
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810876996.0A Active CN109115530B (en) | 2018-08-03 | 2018-08-03 | System for transparent display and quantitative characterization of stress field of tunnel lining structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109115530B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019237854A1 (en) * | 2019-05-08 | 2019-12-19 | 中国矿业大学(北京) | Transparent constraint apparatus for normal deformation of planar model |
| CN110593895A (en) * | 2019-09-20 | 2019-12-20 | 郑州大学 | Unilateral uninstallation lower model tunnel section of jurisdiction warp measuring device |
| CN112326431A (en) * | 2020-11-06 | 2021-02-05 | 四川大学 | Experimental device and experimental method for rock deformation and damage process |
| WO2021134260A1 (en) * | 2019-12-30 | 2021-07-08 | 中国矿业大学(北京) | Experiment system and experiment method for recognizing planar complex structure model plastic zone |
| WO2021163991A1 (en) * | 2020-02-21 | 2021-08-26 | 中国矿业大学(北京) | Characterization method for full-field evolution of surrounding rock stress field and activation mechanism of adjacent faults |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3438211A (en) * | 1966-04-02 | 1969-04-15 | Hoesch Ag | Lining structure for subterranean passages |
| JPS6363897A (en) * | 1986-09-02 | 1988-03-22 | 清水建設株式会社 | Lining structure of tunnel and underground cavity and lining method |
| JPH07197792A (en) * | 1993-12-29 | 1995-08-01 | Tekken Constr Co Ltd | Tunnel lining structure, lining device and construction method |
| CN1932169A (en) * | 2006-09-29 | 2007-03-21 | 北京交通大学 | Analogue experiment stand for interreaction of tunnel structure, surrounding rock and underground water |
| CN101363323A (en) * | 2007-08-08 | 2009-02-11 | 同济大学 | Pre-stress lining design method for shield tunnel |
| CN101696913A (en) * | 2009-10-30 | 2010-04-21 | 同济大学 | Small-range tunnel horizontal plane model tester system for realizing multistage and master control loading |
| CN101738331A (en) * | 2009-12-28 | 2010-06-16 | 北京交通大学 | Tunnel construction simulation plane strain model test device |
| CN101832140A (en) * | 2010-04-20 | 2010-09-15 | 北京交通大学 | Testing method of water pressure distribution law of subsea tunnel lining |
| US20100308389A1 (en) * | 2005-08-11 | 2010-12-09 | Micron Technology, Inc. | Discrete trap non-volatile multi-functional memory device |
| CN103698062A (en) * | 2013-10-18 | 2014-04-02 | 中山大学 | Novel photoelastic testing method for inhomogeneous medium |
| CN104502137A (en) * | 2015-01-16 | 2015-04-08 | 招商局重庆交通科研设计院有限公司 | Tunnel lining structure uniform load test system and sealing method thereof |
| CN104989427A (en) * | 2015-07-20 | 2015-10-21 | 舟山市智海技术开发有限公司 | Tunnel construction lining amount determination device and construction method thereof |
| CN107144525A (en) * | 2017-05-27 | 2017-09-08 | 中国矿业大学(北京) | The measuring method of the Dynamic stress field Evolution of complicated inhomogeneous structure body |
| CN108106973A (en) * | 2017-12-18 | 2018-06-01 | 大连理工大学 | A kind of method for measuring saturation granule medium stress and displacement simultaneously based on transparent photoelastic material |
-
2018
- 2018-08-03 CN CN201810876996.0A patent/CN109115530B/en active Active
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3438211A (en) * | 1966-04-02 | 1969-04-15 | Hoesch Ag | Lining structure for subterranean passages |
| JPS6363897A (en) * | 1986-09-02 | 1988-03-22 | 清水建設株式会社 | Lining structure of tunnel and underground cavity and lining method |
| JPH07197792A (en) * | 1993-12-29 | 1995-08-01 | Tekken Constr Co Ltd | Tunnel lining structure, lining device and construction method |
| US20100308389A1 (en) * | 2005-08-11 | 2010-12-09 | Micron Technology, Inc. | Discrete trap non-volatile multi-functional memory device |
| CN1932169A (en) * | 2006-09-29 | 2007-03-21 | 北京交通大学 | Analogue experiment stand for interreaction of tunnel structure, surrounding rock and underground water |
| CN101363323A (en) * | 2007-08-08 | 2009-02-11 | 同济大学 | Pre-stress lining design method for shield tunnel |
| CN101696913A (en) * | 2009-10-30 | 2010-04-21 | 同济大学 | Small-range tunnel horizontal plane model tester system for realizing multistage and master control loading |
| CN101738331A (en) * | 2009-12-28 | 2010-06-16 | 北京交通大学 | Tunnel construction simulation plane strain model test device |
| CN101832140A (en) * | 2010-04-20 | 2010-09-15 | 北京交通大学 | Testing method of water pressure distribution law of subsea tunnel lining |
| CN103698062A (en) * | 2013-10-18 | 2014-04-02 | 中山大学 | Novel photoelastic testing method for inhomogeneous medium |
| CN104502137A (en) * | 2015-01-16 | 2015-04-08 | 招商局重庆交通科研设计院有限公司 | Tunnel lining structure uniform load test system and sealing method thereof |
| CN104989427A (en) * | 2015-07-20 | 2015-10-21 | 舟山市智海技术开发有限公司 | Tunnel construction lining amount determination device and construction method thereof |
| CN107144525A (en) * | 2017-05-27 | 2017-09-08 | 中国矿业大学(北京) | The measuring method of the Dynamic stress field Evolution of complicated inhomogeneous structure body |
| CN108106973A (en) * | 2017-12-18 | 2018-06-01 | 大连理工大学 | A kind of method for measuring saturation granule medium stress and displacement simultaneously based on transparent photoelastic material |
Non-Patent Citations (1)
| Title |
|---|
| 鞠杨 等: ""钢筋混凝土盾构衬砌结构的三维数值分析"", 《计算力学学报》 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2019237854A1 (en) * | 2019-05-08 | 2019-12-19 | 中国矿业大学(北京) | Transparent constraint apparatus for normal deformation of planar model |
| US10731962B1 (en) | 2019-05-08 | 2020-08-04 | China University Of Mining And Technology, Beijing | Transparent constraint apparatus for normal deformation of planar model |
| CN112236664A (en) * | 2019-05-08 | 2021-01-15 | 中国矿业大学(北京) | Transparent restraint device for normal deformation of plane model |
| AU2019285660B2 (en) * | 2019-05-08 | 2021-02-25 | China University Of Mining And Technology, Beijing | Transparent constraint apparatus for normal deformation of planar model |
| CN112236664B (en) * | 2019-05-08 | 2023-09-15 | 中国矿业大学(北京) | Transparent restraint device for normal deformation of plane model |
| CN110593895A (en) * | 2019-09-20 | 2019-12-20 | 郑州大学 | Unilateral uninstallation lower model tunnel section of jurisdiction warp measuring device |
| WO2021134260A1 (en) * | 2019-12-30 | 2021-07-08 | 中国矿业大学(北京) | Experiment system and experiment method for recognizing planar complex structure model plastic zone |
| AU2019481267B2 (en) * | 2019-12-30 | 2023-06-29 | China University Of Mining And Technology, Beijing | Experiment system and experiment method for recognizing planar complex structure model plastic zone |
| WO2021163991A1 (en) * | 2020-02-21 | 2021-08-26 | 中国矿业大学(北京) | Characterization method for full-field evolution of surrounding rock stress field and activation mechanism of adjacent faults |
| CN112326431A (en) * | 2020-11-06 | 2021-02-05 | 四川大学 | Experimental device and experimental method for rock deformation and damage process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109115530B (en) | 2020-06-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109115530A (en) | A kind of system of tunnel lining structure stress field transparence display and quantitatively characterizing | |
| Martinelli et al. | Modeling in-plane and out-of-plane displacement fields in pull-off tests on FRP strips | |
| CN106595918B (en) | A kind of long term monitoring device and method of the outer soil pressure of duct pieces of shield tunnel | |
| CN107144525A (en) | The measuring method of the Dynamic stress field Evolution of complicated inhomogeneous structure body | |
| CN105157892A (en) | Flexible distributed force measuring pad and manufacturing method thereof | |
| Ju et al. | Photoelastic method to quantitatively visualise the evolution of whole-field stress in 3D printed models subject to continuous loading processes | |
| Kou et al. | Numerical modeling of the fracture process in a three-unit all-ceramic fixed partial denture | |
| Zhao et al. | Experimental and numerical studies on small-scale direct tension test for rock | |
| CN109164038A (en) | Coarse fissure-plane shearing slip Dynamic stress field test macro under Dynamic Loading | |
| CN201628600U (en) | Polariscope | |
| CN105973162A (en) | Spigot-and-socket pipeline interface deformation measurement apparatus and measurement method based on distributed fiber strain sensor | |
| CN106354933B (en) | A kind of ultra-large type waste heat boiler pipeline pressure test method based on BIM technology | |
| CN104316231A (en) | Dynamic force chain observation device of flexible polishing wear particle group | |
| Thompson et al. | The all‐ceramic, inlay supported fixed partial denture. Part 3. Experimental approach for validating the finite element analysis | |
| KR102623477B1 (en) | Method for measuring residual strain for cured composite part | |
| CN100485370C (en) | Load effect monitor for carbon fiber composite material reinforced steel concrete structure | |
| CN111504780A (en) | Method and device for determining rock softening curve in bonding crack model | |
| Michopoulos et al. | Advances on the constitutive characterization of composites via multiaxial robotic testing and design optimization | |
| CN206440719U (en) | The measuring system of Non-load Concrete internal stress in concrete structure | |
| Milosevic et al. | Digital image correlation analysis of biomaterials | |
| WO2020118507A1 (en) | System for transparent display and quantitative characterization of internal stress field of complicated structure | |
| CN204630860U (en) | A kind of device measuring orthotropic membrane structure elastic modulus | |
| CN204286652U (en) | Flexible polishing abrasive particle group motion state riding chain observation device | |
| Xu et al. | Development and application of a test system for modeling tunnel excavation with transparent rock surrogate | |
| CN110528598A (en) | A kind of visual imitative experimental appliance of Excavation Process soil pressure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |