CN205353060U - Three -dimensional model tunnel test device of simulation tunnel excavation and compensation slip casting process - Google Patents
Three -dimensional model tunnel test device of simulation tunnel excavation and compensation slip casting process Download PDFInfo
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- CN205353060U CN205353060U CN201620098659.XU CN201620098659U CN205353060U CN 205353060 U CN205353060 U CN 205353060U CN 201620098659 U CN201620098659 U CN 201620098659U CN 205353060 U CN205353060 U CN 205353060U
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- tunnel
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- push rod
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Abstract
The utility model discloses a three -dimensional model tunnel test device of simulation tunnel soil body excavation and compensation slip casting process, including fixing cylindrical and with lead screw complex internal thread hole, the appearance of axle sleeve includes the round platform part, the last multiunit through -hole that is equipped with of fixing cylindrical is equipped with an ejector pin in every through -hole, the ejector pin slides along the through -hole, the last cover of fixing cylindrical is equipped with a plurality of adjacent opening elasticity rings in proper order, the one end of ejector pin and the surface in close contact with of axle sleeve, the other end of ejector pin and the internal surface in close contact with of opening elasticity ring. The utility model discloses expanded the application of mechanical type tunnel in the aspect of tunnel model is experimental, because three -dimensional tunnel model, can realize that the tunnel pursues narrowing of the ring and inflation, it is more lifelike to the simulation of actual engineering. Simultaneously, the real circularity of tunnel outline in the process of the test has been guaranteed to the actual section of jurisdiction of adoption opening elasticity ring simulation, makes the experiment become more meticulous more, has important meaning to the laboratory model testing research of simulating tunnel excavation and compensation slip casting process.
Description
Technical field
This utility model relates to the assay device in a kind of Geotechnical Engineering, particularly relates to the threedimensional model tunnel test device of simulation tunnel excavation and compensation and grouting process.
Background technology
Quickening along with China's Modernized City Construction progress, Underground Rail Transit construction demand is increasing, develop more and more faster, it is shield method that current subway tunnel builds most widely used method, engineering evaluation and evaluation for shield construction, mainly can adopt empirical formula method, finite element numerical simulation, model testing method, the advantage that wherein model test method has uniqueness, it may have very big progressive space.
First, model test is the research very important method of shield tunnel construction key technology, research and checking for shield tunnel key technology, typically require several method to be used in conjunction with being compared, at this engineering field being relatively difficult to carry out field observation and control of underground engineering construction, effective model test is particularly important.
Second, model test method is by certain impact simplifying prominent specific factor, can effectively simulating the truth of Practical Project, it is possible to obtain effective data by Experimental Comparison and actual measurement is analyzed, its result is reliable reference for corresponding Practical Project.
Existing model test tunnel equipment realizes the way totally two kinds expanding and shrinking:
The first kind may be summarized to be water-filled balloon method, namely at rigid cartridge outsourcing latex water pocket, by carrying out the expansion of simulation tunnel toward water filling in capsule or draining and shrinking (example adopting this kind of assay device both at home and abroad is existing a lot).Although this device principle is simple, but drawing water or in the process of water filling, although change in volume can be accurately controlled by flow, but draw water or emulsion capsule shape bad control when the injecting process completes, it is difficult to ensure that tunnel outline remains the circle of rule, result of the test can be made a big impact.
Equations of The Second Kind is mechanical model tunnel (such as some Japanese scholars), principle is by the tapered core within drawing device, the motion of the push rod that control contacts with tapered core is to realize contraction and the expansion in tunnel, and the expansion of such tunnel and the dimension and shape after shrinking can both be accurately controlled.But, in order to realize tunnel expansion or shrinkage, the section of jurisdiction outline of such device can not be an overall circle, and need to be that a circle is combined into by some pieces of sections of jurisdiction layouts, has the polygon in gap between any two.Theoretically, section of jurisdiction sheet number is more many more can close to real circular, but it is also more big to split more fining-off difficulty.In addition, above-mentioned assay device is only capable of realizing the overall expansion in tunnel and contraction, it is adaptable to be assumed to the two dimensional model test of plane strain problems, and in real process, the assembly of section of jurisdiction is all undertaken by ring, work progress is three-dimensional, and therefore the application of this device is very limited.
Utility model content
For above-mentioned prior art, the utility model proposes the threedimensional model tunnel test device of a kind of simulation tunnel excavation and compensation and grouting process, outline circularity can be kept good while can realizing expanding by ring and shrinking, thus the application limitation overcoming the technical problem owing to existing machinery formula model tunnel test device exists and bringing.
In order to solve above-mentioned technical problem, a kind of simulation tunnel soil excavation that the utility model proposes and the threedimensional model tunnel test device of compensation and grouting process, including fixing cylinder, leading screw and axle sleeve, described axle sleeve is provided with the internal thread hole coordinated with described leading screw, and the profile of described axle sleeve is made up of the cylinder being axially connected and round platform；The surface of described cylinder is provided with an axial notch, and the inwall of described fixing cylinder is provided with the guide protrusions being slidably matched with this axial notch；Described fixing cylinder is provided with organizes through hole more, and often group through hole is made up of multiple through holes of radial arrangement on the same cross section of fixing cylinder, is provided with a push rod in each through hole, and described push rod slides along through hole；Being set with multiple open elastic ring adjacent successively on described fixing cylinder, the quantity of open elastic ring is identical with the quantity of the many groups push rod being arranged on fixing cylinder；One end of described push rod contacts with the intimate of described axle sleeve, and the inner surface of the other end of described push rod and described open elastic ring is in close contact.
Further, being formulated with multiple axle sleeve in this utility model threedimensional model tunnel test device, the cylinder of axle sleeve profile is different with the physical dimension of round platform.
Described leading screw is connected with described sleeve thread, on described leading screw, is provided with rocking handle in the one end away from described axle sleeve, and when rotating described rocking handle, described leading screw drives axle sleeve to move axially along fixing cylinder, and then is made open elastic ring spreading or contraction by described push rod.
Spreading or the contraction of multiple open elastic rings are independent from.
Compared with prior art, the beneficial effects of the utility model are:
This utility model threedimensional model tunnel test device, open elastic ring is adopted to replace split blade type section of jurisdiction to simulate the Lining Ring of actual tunnel, between wherein adjacent open elastic ring mutually independently, the kinestate of each open elastic ring controls by the push rod in respective ring, and the shape of the axle sleeve that the movement locus of push rod is acted on by (the having tapered core) moved along tunnel axis determines.Therefore, as during to realize the action process of different tunnel expansion or shrinkage, it is only necessary to design and change difform axle sleeve.Only having fixing cylinder in whole device and be fixed on model casing, other assemblies move both with respect to fixing cylinder.Use this utility model threedimensional model tunnel test device to achieve open elastic ring expand by ring and shrink, actual tunnel excavation and slip casting process can be simulated more really.And it being always ensured that tunnel outline is for circle so that test more conforms to true practical situation.
Accompanying drawing explanation
Fig. 1 is the STRUCTURE DECOMPOSITION schematic diagram of this utility model threedimensional model tunnel test device；
Fig. 2 is the structural representation of this utility model threedimensional model tunnel test device.
In figure: 1-open elastic ring, 2-leading screw, 3-axle sleeve, 31-cylinder, 32-round platform, 4-push rod, 5-rocking handle, 6-fixes cylinder, 7-guide protrusions, the axial recessed grain of 8-.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, technical solutions of the utility model being described in further detail, this utility model is only explained by described specific embodiment, not in order to limit this utility model.
As depicted in figs. 1 and 2, a kind of simulation tunnel soil excavation that the utility model proposes and the threedimensional model tunnel test device of compensation and grouting process, including fixing cylinder 6, leading screw 2 and axle sleeve 3, described fixing cylinder 6 is fixed on model casing, described axle sleeve 3 is provided with the internal thread hole coordinated with described leading screw 2, and the profile of described axle sleeve 3 is made up of the cylinder 31 being axially connected and round platform 32；The surface of described cylinder 31 is provided with an axial notch 8, and the inwall of described fixing cylinder 6 is provided with the guide protrusions 7 being slidably matched with this axial notch 8；Described fixing cylinder 6 is provided with organizes through hole more, and often group through hole is made up of multiple through holes of radial arrangement on the same cross section of fixing cylinder 6, is provided with a push rod 4 in each through hole, and described push rod 4 slides along through hole；Described fixing cylinder 6 is set with multiple open elastic ring 1 (namely having at least an open elastic ring 1) adjacent successively, open elastic ring 1 is adopted to replace split blade type section of jurisdiction to simulate the Lining Ring of actual tunnel, described open elastic ring is at least one ring, can multiple combine, the quantity of open elastic ring 1 is identical with the quantity of the many groups push rod 4 being arranged on fixing cylinder 6, and spreading or the contraction of multiple open elastic rings 1 are independent from.One end of described push rod 4 contacts with the intimate of described axle sleeve 3, and the inner surface of the other end of described push rod 4 and described open elastic ring 1 is in close contact.Described leading screw 2 is threadeded with described axle sleeve 3, on described leading screw 2, it is provided with rocking handle 5 in the one end away from described axle sleeve 3, each open elastic ring 1 represents a ring model tunnel duct piece, owing to elastic ring is opening, so can expanding and shrink, thus simulating the soil body volume compensation produced in the soil body Volume Loss and compensation and grouting process produced in true tunnel excavation process.When rotating described rocking handle 5, described leading screw 2 rotates simultaneously and drives axle sleeve 3 mobile along fixing cylinder 6 axial (i.e. tunnel axis), according to round platform (i.e. tapered core) outer contour shape in axle sleeve 3 profile, described push rod 4 can produce the displacement closer or far from tunnel axis direction, and then make the open elastic ring 1 contacted can produce expansion or shrinkage by described push rod 4, thus realizing tunnel by narrowing of the ring and expansion, reach the purpose of threedimensional model tunnel test.This utility model has expanded the application in tunnel model test of the mechanical type tunnel, because being three-dimensional tunnel model, it is possible to achieve tunnel is by narrowing of the ring and expansion, and the simulation for Practical Project is more life-like.Meanwhile, adopting open elastic ring to simulate actual section of jurisdiction, it is ensured that the out of roundness of tunnel outline in process of the test, make test more become more meticulous, the Eccentric Loads in Layered Soils and Research for simulation tunnel excavation and compensation and grouting process has great importance
The motor process of this utility model split shed elastic ring 1 is controlled by the push rod in respective ring, and the movement locus of push rod is determined by the shape of the tapered core moved along tunnel axis.This utility model threedimensional model tunnel test device, is formulated with multiple axle sleeve 3, and the cylinder of axle sleeve 3 profile is different with the physical dimension of round platform, and multiple difform axle sleeves 3 all can be connected with described leading screw 2.Therefore as during to realize different tunnel expansion or shrinkage action processes, it is only necessary to design and change different profile physical dimensions (i.e. tapered core part).This utility model is easy to operation, and in process of the test, tunnel outer contour shape and scaled fine are controlled, it is possible to meets various model tunnel and expands the needs with shrinkage test.
Although this utility model being described above in conjunction with figure; but this utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is merely schematic; rather than it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; when without departing from this utility model objective, it is also possible to make many variations, these belong within protection of the present utility model.
Claims (4)
1. the threedimensional model tunnel test device of a simulation tunnel excavation and compensation and grouting process, including fixing cylinder (6), leading screw (2) and axle sleeve (3), described axle sleeve (3) is provided with the internal thread hole coordinated with described leading screw (2), and the profile of described axle sleeve (3) is made up of the cylinder (31) being axially connected and round platform (32)；The surface of described cylinder (31) is provided with an axial notch (8), and the inwall of described fixing cylinder (6) is provided with the guide protrusions (7) being slidably matched with this axial notch (8)；Described fixing cylinder (6) is provided with organizes through hole more, often group through hole is made up of multiple through holes of radial arrangement on the same cross section of fixing cylinder (6), being provided with a push rod (4) in each through hole, described push rod (4) slides along through hole；It is characterized in that:
Being set with multiple open elastic ring (1) adjacent successively on described fixing cylinder (6), the quantity of open elastic ring (1) is identical with the quantity of the many groups push rod (4) being arranged on fixing cylinder (6)；One end of described push rod (4) contacts with the intimate of described axle sleeve (3), and the inner surface of the other end of described push rod (4) and described open elastic ring (1) is in close contact.
2. simulation tunnel excavation and the threedimensional model tunnel test device of compensation and grouting process according to claim 1, it is characterised in that: being formulated with multiple axle sleeve (3), the cylinder of axle sleeve (3) profile is different with the physical dimension of round platform.
3. simulation tunnel excavation and the threedimensional model tunnel test device of compensation and grouting process according to claim 1, it is characterized in that, described leading screw (2) is threadeded with described axle sleeve (3), described leading screw (2) is upper, be provided with rocking handle (5) in the one end away from described axle sleeve (3), when rotating described rocking handle (5), described leading screw (2) drives axle sleeve (3) to move axially along fixing cylinder (6), and then is made open elastic ring (1) spreading or contraction by described push rod (4).
4. simulation tunnel excavation and the threedimensional model tunnel test device of compensation and grouting process according to claim 1, it is characterised in that: spreading or the contraction of multiple open elastic rings (1) are independent from.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620098659.XU CN205353060U (en) | 2016-01-29 | 2016-01-29 | Three -dimensional model tunnel test device of simulation tunnel excavation and compensation slip casting process |
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| CN201620098659.XU CN205353060U (en) | 2016-01-29 | 2016-01-29 | Three -dimensional model tunnel test device of simulation tunnel excavation and compensation slip casting process |
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| CN205353060U true CN205353060U (en) | 2016-06-29 |
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| CN201620098659.XU Withdrawn - After Issue CN205353060U (en) | 2016-01-29 | 2016-01-29 | Three -dimensional model tunnel test device of simulation tunnel excavation and compensation slip casting process |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548504A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Three-dimensional model tunnel test device for simulating tunnel excavation and compensation grouting process |
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2016
- 2016-01-29 CN CN201620098659.XU patent/CN205353060U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105548504A (en) * | 2016-01-29 | 2016-05-04 | 天津大学 | Three-dimensional model tunnel test device for simulating tunnel excavation and compensation grouting process |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20160629 Effective date of abandoning: 20170524 |
|
| AV01 | Patent right actively abandoned |