CN207332905U - Utilize the big stroke rod-type damper of performance behind material peak - Google Patents
Utilize the big stroke rod-type damper of performance behind material peak Download PDFInfo
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- CN207332905U CN207332905U CN201721373242.0U CN201721373242U CN207332905U CN 207332905 U CN207332905 U CN 207332905U CN 201721373242 U CN201721373242 U CN 201721373242U CN 207332905 U CN207332905 U CN 207332905U
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Abstract
The big stroke rod-type damper of performance behind a kind of peak using material, including the first connecting plate, the second connecting plate and rod-type damping piece, damping mesh sheet is cooperatively formed between the rod-type damping piece, plate face of the damping mesh sheet respectively with first connecting plate and second connecting plate is fixedly connected, and the plate face of first connecting plate and second connecting plate is parallel to each other；The damping mesh sheet produces compressive deformation in the compression of first connecting plate and second connecting plate.First connecting plate and the second connecting plate receive extruding force, are then passed to damping mesh sheet, damp in mesh sheet 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 rod-type damping of performance behind a kind of peak using material
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
Road engineering, because it is independent work system, and performing preliminary bracing after being excavated in tunnel needs gunite concrete, coagulation
The variability capacity of soil structure is limited, once preliminary bracing forms the concrete structure of closing, perseverance group large deformation anchor rod
(rope) and scalable steelframe just lose 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 rod-type damper of performance behind peak using material,
Can play a supporting role to tunnel inner wall, at the same can also deformation within the specific limits, discharge the stress in tunnel so that tunnel
The reliability of support gets a promotion, and concrete technical scheme is as follows：
The big stroke rod-type damper of performance behind a kind of peak using material, including the first connecting plate, the second connecting plate and bar
Type damping piece, cooperatively forms damping mesh sheet between the rod-type damping piece, the damping mesh sheet respectively with first connecting plate
It is fixedly connected with the plate face of second connecting plate, and first connecting plate and the plate face of second connecting plate are mutually equal
OK；
The damping mesh sheet produces compressive deformation in the compression of first connecting plate and second connecting plate.
Effect, the first connecting plate and the second connecting plate are squeezed power, are then passed to damping mesh sheet, damping mesh sheet deformation
During, damping mesh sheet allows country rock to produce contraction distortion while cooperateing with tunnel structure to surrounding rock supporting, discharges 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 surrendered in damper
Deformation stage release is completed, then the packing stage of damper can provide final safety assurance.
A kind of further restriction of parallel technical solution, the damping mesh sheet damp mesh sheet for open and flat formula.
Effect, template damping mesh sheet is clamped in centre by connecting plate, when the first connecting plate and the second connecting plate are squeezed
During power, damping mesh sheet is also squeezed, and damping mesh sheet deforms upon, and deformation mainly divides 4 stages, and the 1st stage was damping mesh sheet
Elastic deformation stage, pressure with deform it is linearly increasing, the 2nd stage for damping mesh sheet surrender decline deformation stage, pressure with
Deformation declines, and the 3rd stage was the surrender residual deformation stage of damping mesh sheet, and pressure is constant with deforming, and the 4th stage was damping mesh sheet
Compacting deformation stage, pressure with deformation increase, wherein the 3rd stage be damp mesh sheet deformation main body, damper is constant
Continue large deformation under pressure, damping mesh sheet deformation band moves integer support structure and produces contraction distortion, so as to fulfill control tunnel knot
Structure internal force, release pressure from surrounding rock, increase 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.
Further limit, the open and flat formula damping mesh sheet includes rectilinear damping mesh sheet, and the rectilinear damping mesh sheet is hung down
Directly in the plate face of first connecting plate and second connecting plate.
Further limit, the open and flat formula damping mesh sheet includes tilting damping mesh sheet, the tilting damping mesh sheet with
The plate face of first connecting plate and second connecting plate is at an acute angle.
Effect, simpler when straight-bar structural damping device is manufactured, cost-effective, rectilinear damping mesh sheet and inclination
Bar causes it to bear the capability improving of pressure, selects different bearing capacities collocation different types of according to the situation in specific tunnel
Damper.
A kind of further restriction of parallel technical solution, the damping mesh sheet damp mesh sheet for bending-type.
The pressure peak in the 1st stage of the curvature-adjustable section damping mesh sheet deformation of curved bar is adjusted, the curvature of curved bar is bigger, pressure
Power peak value is smaller, and when curved bar bends to semi arch, the pressure peak in the 1st stage is equal to the remaining constant pressure of phase III,
And curved bar can control the surrender bending direction of bar, ensure that each damping mesh sheet does not extrude mutually in flexural deformation, so that influencing resistance
The constant yield force of Buddhist nun's device.
A kind of the further of parallel technical solution limits, outside plate face on first connecting plate and second connecting plate
It is equipped with dowel and bolt hole.
Effect, when mounted, buries people's concrete by dowel and fixes, while be fixed by bolt hole and steelframe.
A kind of further restriction of parallel technical solution, perpendicular to connecting board surface the rod-type damping piece both ends also
Equipped with extension, the extension extends through first connecting plate and second connecting plate.
Effect, extends through part and replaces dowel function.When mounted, fixed by extension Transducers Embedded in Concrete, this
When damper and steelframe only contacted, but do not take bolt to fix, installation is fast and also more convenient when manufacturing.
Beneficial effects of the present invention are：Damping piece is used as by rod-like structure, forms damping mesh sheet, damper is manufactured into
This is lower, easily manufactured, and the cycle of manufacture and installation is shorter, this damper can play a supporting role tunnel, and supports
Afterwards, damper can carry out deformation according to the extruding force that tunnel applies it, discharge the pressure in tunnel.The present invention can not only pacify
Deformed on tunnel circumferential direction as circumferential damping, damping of the tunnel radially as radial direction can also be installed on and deformed.This
Invention can carry out prefabricated, then be installed in constructing tunnel, easily manufactured, and installation 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 is the structure diagram of the embodiment of the present invention five.
Fig. 6 is the structure diagram of the embodiment of the present invention six.
Fig. 7 be the present invention as circumferential direction direction on damper when scheme of installation.
Fig. 8 be the present invention as damper in the radial direction when scheme of installation.
Fig. 9 is the deformation process schematic diagram of damper.
Figure 10 is the pressure and deformational displacement relation schematic diagram of damper.
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, in embodiment one, the big stroke rod-type damper of performance behind a kind of peak using material, by mild steel
It is made, it includes the first connecting plate 1, the second connecting plate 2 and rod-type damping piece, and damping is cooperatively formed between the rod-type damping piece
Mesh sheet, plate face of the damping mesh sheet respectively with first connecting plate 1 and second connecting plate 2 are fixedly connected, and described
The plate face of first connecting plate 1 and second connecting plate 2 is parallel to each other；The first connecting plate 1 and the second connecting plate 2 are flat in diagram
Harden structure, the plate of other shapes can also be applied, and e.g., the cross sectional curve of width is c-type, in the longitudinal direction Curved
Into other shapes such as bridge arch shapes, as long as meeting that the plate face of the first connecting plate 1 and the second connecting plate 2 is parallel to each other.The resistance
Buddhist nun's mesh sheet produces compressive deformation in the compression of first connecting plate 1 and second connecting plate 2.The damping mesh sheet is flat
Exhibition formula damps mesh sheet 31.The open and flat formula damping mesh sheet 31 is rectilinear damping mesh sheet 311, the rectilinear damping mesh sheet 311
Perpendicular to the plate face of first connecting plate 1 and second connecting plate 2.
As shown in Fig. 2, embodiment two is that the tilting damps mesh sheet relative to the embodiment one difference part
312 is at an acute angle with the plate face of first connecting plate 1 and second connecting plate 2.
As shown in figure 3, combination of the embodiment three for embodiment one and embodiment two, the open and flat formula damping mesh sheet 31 includes
Rectilinear damping mesh sheet 311 and tilting damping mesh sheet 312, the tilting damping mesh sheet 312 are interspersed in each described vertical
Between formula damping mesh sheet 311, net structure is formed.
As shown in figure 4, example IV, the damping mesh sheet damps mesh sheet 32 for bending-type.
As shown in figure 5, outside plate face is equipped with company on embodiment five, first connecting plate 1 and second connecting plate 2
Connect muscle 4 and bolt hole 5.
As shown in fig. 6, embodiment six, extension is additionally provided with perpendicular to the both ends of the rod-type damping piece of connecting board surface
6, the extension 6 extends through first connecting plate 1 and second connecting plate 2.
As shown in fig. 7, support and deformation are provided for circumferential direction using the big stroke rod-type damper of performance behind material peak,
Steelframe 7 is located to be connected using 7 and first connecting plate 1 and second of both sides, that is, steelframe of the big stroke rod-type damper of performance behind material peak
Fishplate bar 2 is bolted.
As shown in figure 8, support and deformation are provided for radial direction using the big stroke rod-type damper of performance behind material peak,
Using the big stroke rod-type damper of performance behind material peak between country rock 8 and steelframe 7, and the plate face of the first connecting plate 1 and
Steelframe 7 contacts, and the plate face and country rock 8 of the second connecting plate 2 contact.
As shown in figure 9, P is load, U is deformational displacement, and damping mesh sheet is from compression, then to yield deformation, then to being compacted,
During yield deformation, damper plays supporting role to country rock 8, when being compacted to the end, the pressure release of tunnel surrounding 8
Finish, deformational displacement no longer produces.
As shown in Figure 10, damp mesh sheet includes four-stage in deformation process, and 1, elastic stage, 2, surrender time depression of order
Section, 3, the surrender remaining stage, 4, 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.
In Fig. 1-Fig. 6, the schematic diagram on damping one plane angle of mesh sheet is illustrate only, it shows on view is only
Single rod-like structure, shape on another plane angle is with reference to Fig. 7, in the figure 7, it can be seen that damp the netted knot of mesh sheet
Structure is made of head rod and the second connecting rod, and the both ends of head rod are consolidated with the first connecting plate and the second connecting plate respectively
Fixed, the second connecting rod and head rod are into angle cross-fixing so that when connecting plate is pressurized, after the deformation of head rod
The coverage of the first connecting plate and the second connecting plate is not stretched out, avoids it from influencing to construct toward deformation inside tunnel clearance.
Claims (7)
- A kind of 1. big stroke rod-type damper of performance behind peak using material, it is characterised in that：Including the first connecting plate (1), Two connecting plates (2) and rod-type damping piece, cooperatively form damping mesh sheet between the rod-type damping piece, the damping mesh sheet respectively with First connecting plate (1) is fixedly connected with the plate face of second connecting plate (2), and first connecting plate (1) and described The plate face of second connecting plate (2) is parallel to each other；The damping mesh sheet produces compressive deformation in the compression of first connecting plate (1) and second connecting plate (2).
- 2. the big stroke rod-type damper of performance behind a kind of peak using material according to claim 1, it is characterised in that：Institute State damping mesh sheet and damp mesh sheet (31) for open and flat formula.
- 3. the big stroke rod-type damper of performance behind a kind of peak using material according to claim 2, it is characterised in that：Institute Stating open and flat formula damping mesh sheet (31) includes rectilinear damping mesh sheet (311), and the rectilinear damping mesh sheet (311) is perpendicular to described The plate face of first connecting plate (1) and second connecting plate (2).
- 4. the big stroke rod-type damper of performance, its feature exist behind a kind of peak using material according to Claims 2 or 3 In：The open and flat formula damping mesh sheet (31) includes tilting damping mesh sheet (312), the tilting damping mesh sheet (312) and institute The plate face for stating the first connecting plate (1) and second connecting plate (2) is at an acute angle.
- 5. the big stroke rod-type damper of performance, its feature exist behind a kind of peak using material according to claim 1 or 2 In：The damping mesh sheet damps mesh sheet (32) for bending-type.
- 6. the big stroke rod-type damper of performance behind a kind of peak using material according to claim 1, it is characterised in that：Institute State outside plate face on the first connecting plate (1) and second connecting plate (2) and be equipped with dowel (4) and bolt hole (5).
- 7. the big stroke rod-type damper of performance behind a kind of peak using material according to claim 1, it is characterised in that：Hang down Extension (6) directly is additionally provided with the both ends of the rod-type damping piece of connecting board surface, the extension (6) extends through described First connecting plate (1) and second connecting plate (2).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721373242.0U CN207332905U (en) | 2017-10-24 | 2017-10-24 | Utilize the big stroke rod-type damper of performance behind material peak |
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| CN201721373242.0U CN207332905U (en) | 2017-10-24 | 2017-10-24 | Utilize the big stroke rod-type damper of performance behind material peak |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816360A (en) * | 2017-10-24 | 2018-03-20 | 仇文革 | Utilize the big stroke rod-type damper of performance behind material peak |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107816360A (en) * | 2017-10-24 | 2018-03-20 | 仇文革 | Utilize the big stroke rod-type damper of performance behind material peak |
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