CN207332904U - Utilize the big stroke bellows damper of performance behind material peak - Google Patents
Utilize the big stroke bellows damper of performance behind material peak Download PDFInfo
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- CN207332904U CN207332904U CN201721373241.6U CN201721373241U CN207332904U CN 207332904 U CN207332904 U CN 207332904U CN 201721373241 U CN201721373241 U CN 201721373241U CN 207332904 U CN207332904 U CN 207332904U
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Abstract
The big stroke bellows damper of performance behind a kind of peak using material, including the first connecting plate, the second connecting plate and bellows；The plate face of first connecting plate and second connecting plate is parallel to each other；The nose end of the bellows is separately fixed in the plate face of first connecting plate and the plate face of second connecting plate.In damper deformation process, allow country rock to produce contraction distortion while damper cooperates with tunnel structure to surrounding rock supporting, discharge pressure from surrounding rock.In practice, pressure from surrounding rock discharges in the yield deformation stage of damper to be completed, and is completed if pressure from surrounding rock does not discharge in the damper yield deformation stage, the packing stage of damper can provide final safety assurance.
Description
Technical field
The present invention relates to Tunnel Engineering field, and in particular to the big stroke bellows resistance of performance behind a kind of peak using material
Buddhist nun's device.
Background technology
China is in Tunnel Engineering and builds the high-speed developing period, is largely related to country rock in fields such as traffic, mine, water conservancies
Stability problem.Large deformation problem is commonly encountered when tunnel structure passes through weakness, breaking surrounding rock stratum, tunnel surrounding is shown as and holds
Continuous deflection is big, the breakaway of preliminary bracing concrete, chip off-falling, crushing, steelframe distortion, cause difficulty of construction is big, construction speed slowly,
Disease management is difficult, construction risk increases, construction cost increases sharply.
When running into large deformation disease, existing countermeasure is mostly that anchor pole, back-grouting are set at structure destruction, is performed
Cover arch, change preliminary bracing etc., in place's strengthening supporting parameter of not constructing, such as set anchor pole (rope), grouting with small pipe, increase to spray and mix
Solidifying soil thickness etc., but practice have shown that, simple increase supporting parameter can not effectively administer large deformation problem, such as Mu Zhai ridges tunnel
Sub- tunnel of road, new city etc., its construction period multiple strengthening supporting parameter, the lining of change two perform opportunity, repeatedly change initial stage repeatedly
Large deformation problem is not solved after supporting still.To find out its cause, the deformation pressure brought for surrouding rock deformation that tunnel support structure is subject to
Power, the simple deformation pressure brought by the hard anti-country rock of Support Resistance be it is infeasible, it is above-mentioned to be changed repeatedly in construction
The behavior for the preliminary bracing that gross distortion destroys occurs, its essence is exactly the progressively deformation release country rock under the constraint of supporting in the early stage
The process of deformation pressure, until pressure from surrounding rock release finishes, cavern can just tend towards stability.
Now, " anti-to put combination " supporting construction has constant resistance and large deformation anchor rod (rope) and scalable steelframe.Constant resistance and large deformation anchor
The anchor pole (rope) that bar (rope) can significantly be deformed in the case where providing constant operation resistance, can be referred to as " constant-resistance device ",
It is applied in the mine working of many places, its application method is to set constant resistance and large deformation anchor rod (rope) system, anchor in tunnel-surrounding
The deflection of 300mm-1000mm can persistently occur in the case where providing the working resistance of 120-130kN for bar (rope), pass through anchor pole (rope)
System carries out supporting to tunnel.Using U-shaped steel and slidably, connector, steelframe can provide certain Support Resistance to scalable steelframe
Under, circumferentially compression.
Perseverance group large deformation anchor rod (rope) and scalable steelframe are mainly used in mine working, are not suitable for Tunnel Engineering, because
It is independent work system, and performing preliminary bracing after being excavated in tunnel needs gunite concrete, concrete structure
Variability capacity is limited, once preliminary bracing forms the concrete structure of closing, perseverance is organized large deformation anchor rod (rope) and can be stretched
Contracting steelframe just loses the meaning of its setting.
The content of the invention
In view of the deficiencies of the prior art, the present invention proposes a kind of big stroke bellows damping of performance behind peak using material
Device, in damper deformation process, allows country rock to produce contraction distortion while damper cooperates with tunnel structure to surrounding rock supporting,
Discharge pressure from surrounding rock.In practice, pressure from surrounding rock discharges in the yield deformation stage of damper to be completed, if pressure from surrounding rock is not
Discharge and complete in the damper yield deformation stage, then the packing stage of damper can provide final safety assurance.
Concrete technical scheme is as follows：
The big stroke bellows damper of performance behind a kind of peak using material, including the first connecting plate, the second connecting plate
And bellows；
The plate face of first connecting plate and second connecting plate is parallel to each other；
The nose end of the bellows is separately fixed at the plate face of first connecting plate and the plate of second connecting plate
On face.
The further restriction of parallel technical solution, the Guan Wen of the inside and outside wall of the bellows is annular.
Template bellows is clamped in centre by connecting plate, when the first connecting plate and the second connecting plate are squeezed power, ripple
Line pipe is also squeezed, and bellows deforms upon, and deformation mainly divides 3 stages, and the 1st stage was the elastic deformation rank of bellows
Section, pressure is linearly increasing with deforming, and the 2nd stage was the constant-resistance deformation stage of bellows, and pressure is constant with deforming, and the 3rd stage was
The compacting deformation stage of bellows, pressure increase with deformation, wherein the 2nd stage was the main body of bellows deformation, adjust bellows
Ripple radius and thin and thick, adjust bellows constant pressure value size, bellows compress after can slip casting, formed steel pipe
Concrete structure.Damper continues large deformation under constant pressure, and bellows deformation drives integer support structure to produce contraction
Deformation, so as to fulfill control tunnel structure internal force, release pressure from surrounding rock, increases integrally-built safety coefficient.
Damper utilizes performance behind strength of materials peak, can be in the case where providing certain resistance, it is allowed to larger compression displacement；
Resistance and range adjust behind the hump drag of damper, peak；The deformation direction of damper can control, and work in big stroke
When, deformed damper does not invade tunnel clearance；Damper can pass through bolt hole and dowel and the tunnel of diversified forms
Supporting construction and its combination of a variety of positions；Tunnel structure is except normal section eccentric compression, also by cutting radially
Shear force, damper have enough anti-shear abilities；Damper can be mutually connected in tunnel by connecting plate and longitudinally form elongated beam；
After demarcating damper " load-displacement " curve, structural internal force or pressure from surrounding rock can be measured according to the displacement of damper；Damper
It can be locked with injection or casting concrete to realize the interim function of increasing resistance.
The further restriction of parallel technical solution, the Guan Wen of the inside and outside wall of the bellows is spiral-shaped.
The plate face of the further restriction of parallel technical solution, first connecting plate and second connecting plate, which is equipped with, to be connected
Connect muscle and bolt hole.
The further restriction of parallel technical solution, the bellows are made of mild steel.
The further restriction of parallel technical solution, more than one institute between first connecting plate and second connecting plate
Bellows is stated, each bellows is set up in parallel.
Beneficial effects of the present invention are：
1st, support and deformable, damper itself has some strength, is squeezed in the first connecting plate and the second connecting plate
When, to applying pressure on the axis direction of bellows, in damper deformation process, damper cooperates with tunnel structure to country rock branch
Allow country rock to produce contraction distortion while shield, discharge pressure from surrounding rock, increase the safety coefficient of tunnel structure.
2nd, applicable scope is wide, you can the damper as circumferential direction uses, can also be as the damping of radial direction
Device uses.
3rd, different shape is adapted to, the first connecting plate and the second being adapted to property of connecting plate are designed as straight panel structure, fit
The contact surface of plane is answered, may be designed in the plate of arch bridge-like structure, to adapt to the curved-surface structure of tunnel inner wall, and other are fitted
Answering property adjusts.
4th, easily manufactured, short construction period, can carry out Prefabricated to damper, then in constructing tunnel, carry out
Installation, and the structure of damper is simple, in manufacture cost more, manufacture is also convenient for.
Brief description of the drawings
Fig. 1 is the structure diagram of the embodiment of the present invention one.
Fig. 2 is the structure diagram of the embodiment of the present invention two.
Fig. 3 is the structure diagram of the embodiment of the present invention three.
Fig. 4 is the structure diagram of the embodiment of the present invention four.
Fig. 5 be the present invention as circumferential direction direction on damper when structure diagram.
Fig. 6 be the present invention as damper in the radial direction when structure diagram.
Fig. 7 is the pressure and deformational displacement relation schematic diagram of damper of the present invention.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, so as to make a clearer definition of the protection scope of the present invention.
As shown in Figure 1, embodiment one, the big stroke bellows damper of performance behind a kind of peak using material, including
One connecting plate 1, the second connecting plate 2 and bellows 3；First connecting plate 1 and the plate face of second connecting plate 2 are mutually equal
OK；The bellows 3 is made of mild steel.The nose end of the bellows 3 is separately fixed at the plate face of first connecting plate 1
In the plate face of second connecting plate 2.The Guan Wen of the inside and outside wall of the bellows 3 is annular.Guan Wen is annular herein, specifically
To be equipped with ring-shaped depression on the outer wall of bellows, and ring-shaped depression has multiple to the inner wall depression of bellows, a bellows
Ring-shaped depression is superimposed.
As shown in Fig. 2, the difference part of embodiment two and embodiment one is, the Guan Wen of the inside and outside wall of the bellows 3
To be spiral-shaped.Guan Wen herein is spiral-shaped, it on the outer wall of bellows specifically, be equipped with depression, and be recessed and wind
Pipe outer wall forms spiral-shaped, and the inner wall for the recessed bellows of being recessed.
As shown in figure 3, the difference part of embodiment three and embodiment one is, first connecting plate 1 and described second
There are two kinds of bellowss 3 between connecting plate 2, each bellows 3 is set up in parallel, and the pipe line of bellows 3 is respectively ring
Shape and spiral-shaped.
As shown in figure 4, example IV, is increased on the basis of the damper described in embodiment one to three, it is described
The plate face of first connecting plate 1 and second connecting plate 2 is equipped with dowel 4 and bolt hole 5.
As shown in figure 5, damper provides support and deformation for circumferential direction, steelframe is located at both sides, that is, steelframe 6 of damper
It is bolted with the first connecting plate 1 and the second connecting plate 2.
As shown in fig. 6, damper for radial direction provide support and deformation, damper between country rock 7 and steelframe 6,
And first connecting plate 1 plate face and steelframe 6 contact, the plate face and country rock 7 of the second connecting plate 2 contact.
As shown in fig. 7, damping mesh sheet includes three phases in deformation process, 1, elastic stage, 2, the surrender remnants stages,
3rd, packing stage.
Damper is pressurized from elastic deformation, to yield deformation, then to being finally compacted.In damper deformation process, resistance
Allow country rock to produce contraction distortion while Buddhist nun's device cooperates with tunnel structure to surrounding rock supporting, discharge pressure from surrounding rock.In practice
In, pressure from surrounding rock discharges in the yield deformation stage of damper to be completed, if pressure from surrounding rock is not released in the damper yield deformation stage
Discharge into, then the packing stage of damper can provide final safety assurance.
Claims (6)
- A kind of 1. big stroke bellows damper of performance behind peak using material, it is characterised in that：Including the first connecting plate (1), the second connecting plate (2) and bellows (3)；The plate face of first connecting plate (1) and second connecting plate (2) is parallel to each other；The nose end of the bellows (3) is separately fixed at the plate face and second connecting plate (2) of first connecting plate (1) Plate face on.
- 2. the big stroke bellows damper of performance, its feature exist behind a kind of peak using material according to claim 1 In：The Guan Wen of the inside and outside wall of the bellows (3) is annular.
- 3. the big stroke bellows damper of performance, its feature exist behind a kind of peak using material according to claim 1 In：The Guan Wen of the inside and outside wall of the bellows (3) is spiral-shaped.
- 4. the big stroke bellows damper of performance, its feature exist behind a kind of peak using material according to claim 1 In：The plate face of first connecting plate (1) and second connecting plate (2) is equipped with dowel (4) and bolt hole (5).
- 5. the big stroke bellows damper of performance, its feature exist behind a kind of peak using material according to claim 1 In：The bellows (3) is made of mild steel.
- 6. the big stroke bellows damper of performance, its feature exist behind a kind of peak using material according to claim 1 In：Bellows (3) described in more than one between first connecting plate (1) and second connecting plate (2), each ripple Pipe (3) is set up in parallel.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373241.6U CN207332904U (en) | 2017-10-24 | 2017-10-24 | Utilize the big stroke bellows damper of performance behind material peak |
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| CN201721373241.6U CN207332904U (en) | 2017-10-24 | 2017-10-24 | Utilize the big stroke bellows damper of performance behind material peak |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842377A (en) * | 2017-10-24 | 2018-03-27 | 仇文革 | Utilize the big stroke bellows damper of performance behind material peak |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107842377A (en) * | 2017-10-24 | 2018-03-27 | 仇文革 | Utilize the big stroke bellows damper of performance behind material peak |
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