CN108181145A - The prefabricated pre-embedded device of tunnel-liner and method in a kind of geomechanical model test - Google Patents

The prefabricated pre-embedded device of tunnel-liner and method in a kind of geomechanical model test Download PDF

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Publication number
CN108181145A
CN108181145A CN201711352524.7A CN201711352524A CN108181145A CN 108181145 A CN108181145 A CN 108181145A CN 201711352524 A CN201711352524 A CN 201711352524A CN 108181145 A CN108181145 A CN 108181145A
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CN
China
Prior art keywords
tunnel
liner
plywood
test
plate
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.)
Pending
Application number
CN201711352524.7A
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Chinese (zh)
Inventor
周宗青
高成路
杨为民
石少帅
侯福金
赵然
张猛
丁若松
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong Expressway Jilai Intercity Highway Co Ltd
Shandong University
Original Assignee
Shandong Expressway Jilai Intercity Highway Co Ltd
Shandong University
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong Expressway Jilai Intercity Highway Co Ltd, Shandong University filed Critical Shandong Expressway Jilai Intercity Highway Co Ltd
Priority to CN201711352524.7A priority Critical patent/CN108181145A/en
Publication of CN108181145A publication Critical patent/CN108181145A/en
Pending legal-status Critical Current

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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00Sampling; Preparing specimens for investigation
    • G01N1/28Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q

Abstract

The present invention relates to the prefabricated pre-embedded device of tunnel-liner and methods in a kind of geomechanical model test, spliced outer framework, middle core plate, bottom plate and the bolt that the device includes being made of with lower plywood upper plywood form, the device can be poured by cast iron materials, can also be cut and be bent by universal steel plate.This method is the pre-buried method of tunnel-liner, i.e., by tunnel-liner carry out it is prefabricated after, when testing fill to tunnel elevation, tunnel-liner is embedded to, and after abutment joint is handled, then carry out the processes such as follow-up filler, loading, data monitoring.The present invention has studied the prefabricated pre-embedded device of tunnel-liner and method in a kind of geomechanical model test, it solves the problems, such as that tunnel-liner is difficult to shape and be embedded in model test, is particularly used to solve the problems, such as the making of lining cutting and landfill in operation tunnel geomechanical model test.

Description

The prefabricated pre-embedded device of tunnel-liner and method in a kind of geomechanical model test
Technical field
The invention belongs to geomechanical model test field, in particular to utilizing metal die in geomechanical model test The prefabricated tunnel-liner such as casting concrete or analog material is simultaneously embedded to the apparatus and method in test body.
Background technology
At present, China tunnel is in build and lay equal stress on the stage with repair regulation.By geology, landform, weather conditions and Building wood The various factors such as material and prospecting, design, construction, operation influence, and operation tunnel disease problem becomes increasingly conspicuous.It is set by the period of building Meter and the limitation of construction technology condition, often there is arch wall cracking in the tunnel built in early days, lining cutting is come to nothing behind, structural leakage Defects or the diseases such as water, freezing damage in tunnel, lining thickness are insufficient, concrete strength is low.Therefore, in research operation tunnel defect or disease It is indispensable to the research of tunnel-liner during evil.
One of the characteristics of operation tunnel geomechanical model test is exactly that tunnel-liner is filled and given birth in a manner of prefabricated perhaps Production, and be embedded into test body during testing fill, reduce unnecessary excavation supporting process and to tunnel-liner Specific processing is done, is required with meeting the different of simulation Practical Project.
At present, for tunnel-liner it is prefabricated forming technique study it is less, and generally using 3D printing, by hand fill or The methods of carrying out branch module and cast-in-situ during experiment lacks ripe application system and technological means, it is difficult to which realization is simple and efficient, criticizes Amount production etc..
Invention content
The technical problem to be solved by the present invention is in geomechanical model test tunnel-liner forming with inbuilt device with Method, particularly for solving the operation tunnel disease research having higher requirements to tunnel-liner the problems such as.The present invention can be used for The Underground pipeline types such as all kinds of operation tunnel geomechanical model tests and massif tunnel, seabed tunnel, subway tunnel, hydraulic tunnel Structure geomechanical model test is studied.Compared with forefathers study, which can be achieved the quick prefabricated of tunnel-liner and batch Production, achieves and engineering is more close, the wider array of achievement of the scope of application.
To solve the above problems, the present invention has studied the prefabricated pre-embedded device of tunnel-liner in geomechanical model test and side Method solves the problems, such as that tunnel-liner is difficult to shape and be embedded in geomechanical model test.
To achieve the above object, technical solution of the present invention is as follows:
The prefabricated pre-embedded device of tunnel-liner in a kind of geomechanical model test, the spelling including upper plywood and lower plywood composition Dress formula frame is set in the splicing frame there are one middle core plate, and the bottom of the core plate and splicing frame is equipped with Bottom plate;The space for being used to form tunnel-liner is formd between the middle core plate, splicing frame and bottom plate;The shape in the space Shape is consistent with the contour shape of tunnel-liner.
Further, the upper plywood is equipped with otic placode with lower plywood, and upper plywood and lower plywood are connected by connector Otic placode, the connection of plywood and lower plywood in realization.
Further, it also is provided with otic placode on the bottom plate;The otic placode passes through the otic placode on connector and upper and lower plywood It is connected.
Further, which can be poured by cast iron materials, can also be cut and be bent by universal steel plate.
The method that tunnel-liner is made using above device, is included the following steps:
1) tunnel-liner mold is made;
Using existing machinery processing method, tunnel-liner mould is made such as the methods of cast iron pours, steel plate cuts bending forming Tool, in terms of which belongs to mechanical processing, details are not described herein;
The device is formed by including spliced outer framework, middle core plate, bottom plate and bolt that upper plywood is formed with lower plywood.For Meet geomechanical model test requirement, need according to the likelihood ratio, a certain proportion of scaling is carried out to tunnel-liner cross section.
Bottom plate and middle core plate are attached by the device firstly the need of with three bolts, then the otic placode by upper and lower plywood both ends It is connected with the otic placode of bottom plate, is finally again connected with the otic placode at upper and lower plywood both ends.So far, which pours Building device, installation is complete.
2) lubricant is smeared in the tunnel-liner forming surface of tunnel-liner mold;
Frictional force is larger when preventing from pouring demoulding after material forming;Also for the service life for protecting the device, and use The device inner surface is cleaned after the completion, keeps clean.
3) according to studied tunnel-liner performance requirement, according to similar material mixture, analog material is stirred in advance It is uniformly mixed, material is poured into mold, is stood a period of time after its forming, is opened plywood up and down, you can take out tunnel-liner;
4) during model test filler is carried out, when filler to tunnel position, by prefabricated tunnel-liner Embedment when tunnel joint number is more than two sections, needs to configure and processing is attached at the abutment joints such as concrete or analog material, when connecing After proof strength requirement needed for reaching at seam, you can continue filler to planning height;
5) the prefabricated pre-buried completion of tunnel-liner in geomechanical model test, you can by design requirement carry out experiment loading, The subsequent processes such as acquisition.
In entire work progress, according to length of tunnel and die length, rational tunnel-liner joint number, and can be as required Tunnel is handled in advance, to meet actual requirement of engineering.
Beneficial effects of the present invention are as follows:
The present invention provides the prefabricated pre-embedded device of tunnel-liner and method in a kind of geomechanical model test.The device is by casting Iron material pours, and makes simply, service life is long.Using the device, lining material is poured to form removal after shaping and is taken out i.e. Preparation process can be completed, realizes prefabricated lining cutting Quick-forming, there is succinct efficient, reusable, batch production. In geomechanical model test, using prefabricated built-in process, it is possible to reduce unnecessary excavation and support processes during experiment, The disturbance to pilot system is reduced, improves the stability of pilot system operation, is stablized in simulation operation tunnel lining cutting mechanics During sex chromosome mosaicism, achieve and practical more close result of study.
Description of the drawings
The accompanying drawings which form a part of this application are used for providing further understanding of the present application, and the application's shows Meaning property embodiment and its explanation do not form the improper restriction to the application for explaining the application.
Fig. 1 is tunnel-liner fabricated device schematic three dimensional views in a kind of model test provided by the invention.
Fig. 2 is tunnel-liner fabricated device view in a kind of model test provided by the invention, including vertical view, is looked up Figure, left view and front view.
Fig. 3 is the prefabricated design sketch of tunnel-liner in a kind of model test provided by the invention.
In figure:The upper plywood of 1-, plywood under 2-, core plate in 3-, 4- plywood otic placode bolts hole up and down, 5- bottom plates, 6- bottom plates with Core crab bolt hole, 7- bottom plates and upper and lower plywood otic placode bolt hole.
Specific embodiment
It is noted that following detailed description is all illustrative, it is intended to provide further instruction to the application.It is unless another It indicates, all technical and scientific terms used herein has usual with the application person of an ordinary skill in the technical field The identical meanings of understanding.
It should be noted that term used herein above is merely to describe specific embodiment, and be not intended to restricted root According to the illustrative embodiments of the application.As used herein, unless the context clearly indicates otherwise, otherwise singulative It is also intended to include plural form, additionally, it should be understood that, when in the present specification using term "comprising" and/or " packet Include " when, indicate existing characteristics, step, operation, device, component and/or combination thereof.
In a kind of typical embodiment of the application, as shown in Figs. 1-3, device is formed including upper plywood 1 with lower plywood 2 Splicing frame, set in splicing frame there are one middle core plate 3, and the bottom of middle core plate 3 and splicing frame is equipped with bottom Plate 5;The space for being used to form tunnel-liner is formd between middle core plate 3, splicing frame and bottom plate 5.
Further, upper plywood 1 is equipped with otic placode with lower plywood 2, and otic placode is equipped with bolt hole 4;It is bolted The otic placode of plywood and lower plywood, the connection of plywood and lower plywood in realization.
Further, which can be poured by cast iron materials, can also be cut and be bent by universal steel plate.
Further, otic placode also is provided on bottom plate;The otic placode is equipped with bolt hole 7, by bolt and upper and lower plywood Otic placode be connected;Whole device forms an overall structure.
It is connected between bottom plate and middle core plate also by bolt, specific bolt hole 6 as depicted.
Utilize the prefabricated pre-buried mistake of tunnel-liner during apparatus of the present invention and method progress large-scale geomechanical model experiment Journey is expressed as follows:
1) test-bed is made, and carry out similar material by the practical rock mass materials intensity requirement of model engineering according to test requirements document The proportion research of material, and carry out filler and other processes by the result of study.
2) cutting bending forming is carried out using universal steel plate, is made tunnel-liner by design requirement by machining process Device is poured, which is the shape of a hoof (consistent with the shape of tunnel-liner), including upper plywood 1, lower plywood 2, core Plate 3, bottom plate 5, and the reserved of bolt hole 4,6,7 is carried out, after being completed, seamless spliced it can carry out next step operation.
3) it is as follows to pour device assembling process for tunnel-liner:Bottom plate 5 and middle core plate 3 are connected by bolt hole 6 first It connects, then upper plywood 1 is attached with lower plywood 2 with bottom plate 5 by bolt hole 7, finally pass through upper plywood 1 and lower plywood 2 Bolt hole 4 is attached, and after being completed, seam crossing is without apparent gap, and device is stablized, and can arbitrarily carry, but not becomes Shape and disengaging.
4) in order to reduce frictional force during tunnel-liner demoulding, and extend the service life of the device, using lubricant or The materials such as machine oil carry out the smearing of inner surface.
5) according to actual tunnel engineering lining material performance, similar materials proportion research is carried out, according to result of study, After analog material is mixed evenly, the device is poured into, stands a period of time.
6) after material forming is poured, stripping operation is carried out.It specifically includes as follows:First by upper plywood 1 and lower plywood 2, Plywood 1, lower plywood 2 and 5 bolt of bottom plate dismantle and remove plywood up and down;Then middle core plate 3 is dismantled and removed with 5 bolt of bottom plate Middle core plate 3;The tunnel-liner for pouring forming can finally be taken out.
7) device is cleaned, and with lubricator or machine oil etc. is maintained, waiting pours use next time.
8) if required tunnel-liner is more piece, repeat the operating process of step 1-6, until experiment will needed for satisfaction Ask quantity and length.
9) it is practical according to institute's model engineering, the tunnel-liner after forming is handled, it is made to meet simulation requirement.
10) when model support Similar Material of Rockmass is filled out to tunnel elevation, tunnel-liner embedment is asked, and use lining material pair Seam is handled, and after its intensity is met the requirements, then carries out follow-up filler process.When filler reaches experimental design requirement, Subsequent load and monitoring are carried out, until geomechanical model test is completed.
The foregoing is merely the preferred embodiments of the application, are not limited to the application, for the skill of this field For art personnel, the application can have various modifications and variations.It is all within spirit herein and principle, made any repair Change, equivalent replacement, improvement etc., should be included within the protection domain of the application.

Claims (8)

1. the prefabricated pre-embedded device of tunnel-liner in a kind of geomechanical model test, which is characterized in that including upper plywood and lower conjunction The splicing frame of plate composition, sets in the splicing frame there are one middle core plate, and the core plate and splicing frame Bottom be equipped with bottom plate;The space for being used to form tunnel-liner is formd between the middle core plate, splicing frame and bottom plate.
2. the prefabricated pre-embedded device of tunnel-liner in a kind of geomechanical model test as described in claim 1, which is characterized in that The upper plywood is equipped with otic placode with lower plywood, connects the otic placode of upper plywood and lower plywood by connector, plywood in realization With the connection of lower plywood.
3. the prefabricated pre-embedded device of tunnel-liner in a kind of geomechanical model test as claimed in claim 2, which is characterized in that Otic placode also is provided on the bottom plate;The otic placode is connected by connector with the otic placode on upper and lower plywood.
4. the prefabricated pre-embedded device of tunnel-liner in a kind of geomechanical model test as described in claim 1, which is characterized in that The device is poured by cast iron materials.
5. the prefabricated pre-embedded device of tunnel-liner in a kind of geomechanical model test as described in claim 1, which is characterized in that The device is bent using universal steel plate cutting.
6. the method for making tunnel-liner using any devices of claim 1-5, which is characterized in that including following step Suddenly:
1) tunnel-liner mold is made;
2) lubricant is smeared in the tunnel-liner forming surface of tunnel-liner mold;
3) according to studied tunnel-liner performance requirement, according to similar material mixture, mixing is stirred to analog material in advance Uniformly, material is poured into mold, is stood a period of time after its forming, is opened plywood up and down, you can take out tunnel-liner;
4) during model test filler is carried out, when filler to tunnel position, prefabricated tunnel-liner is embedded to, When tunnel joint number is more than two sections, needs to configure and be attached processing at concrete or analog material abutment joint, when seam crossing reaches To required proof strength require after, you can continue filler to plan height;
5) the prefabricated pre-buried completion of tunnel-liner in geomechanical model test, you can carry out experiment loading, acquisition by design requirement Subsequent process.
7. method as claimed in claim 6, which is characterized in that in order to meet geomechanical model test requirement, need according to The likelihood ratio carries out a certain proportion of scaling to tunnel-liner cross section.
8. method as claimed in claim 6, which is characterized in that when making tunnel and building mold, it is necessary first to bolt by bottom plate It is attached with middle core plate;The otic placode of the otic placode at upper and lower plywood both ends and bottom plate is connected with again, will finally be closed up and down again The otic placode at plate both ends is connected with.
CN201711352524.7A 2017-12-15 2017-12-15 The prefabricated pre-embedded device of tunnel-liner and method in a kind of geomechanical model test Pending CN108181145A (en)

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Application Number Priority Date Filing Date Title
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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110142850A (en) * 2019-05-22 2019-08-20 河海大学 Multiple dimensioned liner structure prefabricated mould and construction method in tunnel model test
CN110146355A (en) * 2019-05-21 2019-08-20 河海大学 It is a kind of interior uniaxial test standard sample prepare mold and its application method

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CN105459253A (en) * 2015-12-25 2016-04-06 福州市规划设计研究院 Large-volume lining model pouring device for tunnel model test and method of large-volume lining model pouring device
CN205668315U (en) * 2016-05-26 2016-11-02 长安大学 A kind of model test tunnel-liner producing device

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110146355A (en) * 2019-05-21 2019-08-20 河海大学 It is a kind of interior uniaxial test standard sample prepare mold and its application method
CN110142850A (en) * 2019-05-22 2019-08-20 河海大学 Multiple dimensioned liner structure prefabricated mould and construction method in tunnel model test

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