CN206545513U - Three-dimensional bar frame and Combined concrete liner structure - Google Patents
Three-dimensional bar frame and Combined concrete liner structure Download PDFInfo
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- CN206545513U CN206545513U CN201720215791.9U CN201720215791U CN206545513U CN 206545513 U CN206545513 U CN 206545513U CN 201720215791 U CN201720215791 U CN 201720215791U CN 206545513 U CN206545513 U CN 206545513U
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- dimensional bar
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Abstract
The utility model is related to a kind of three-dimensional bar frame and Combined concrete liner structure, including is circumferentially enclosed along tunnel and be injected with concrete layer outside the three-dimensional bar frame set, three-dimensional bar frame；Three-dimensional bar frame includes major network screen work and time grid beam, and secondary grid beam and major network screen work is connected by dowel between frame；Major network screen work includes connecting by main longitudinal rib between minor arc muscle, minor arc muscle, and main longitudinal rib length direction is consistent with the length in tunnel, and main oblique arc muscle is additionally provided with the grid surface that minor arc muscle is constituted with main longitudinal rib；Secondary grid beam includes time arc muscle, connected between secondary arc muscle by secondary longitudinal rib, time oblique arc muscle is additionally provided with the grid surface that secondary arc muscle is constituted with time longitudinal rib, whole tunnel face frames are set to behind position is sprayed using gunite concrete, so that overall three-dimensional bar frame is wrapped up by gunite concrete, then timely wet curing, realize the common stress of three-dimensional bar frame and concrete, the support strength to roadway surrounding rock can be improved, construction cost is reduced.
Description
Technical field
The utility model is related to roadway construction technical field, and in particular to a kind of three-dimensional bar frame is served as a contrast with Combined concrete
Build structure.
Background technology
Tunnel is because local environment is severe or by reasons such as mining influences, roadway surrounding rock is subjected to displacement generation into tunnel
The risk that bottom distension even caves in, therefore solve the problems, such as that above-mentioned supporting roadway surrounding rock is always the research topic in the field.
In the prior art, the surrounding rock supporting in tunnel has many methods, there is pin timbering, although suspension roof support supporting is strong
Degree is more reliable, but long construction period, cost are high, there is also anchor concrete Mixed support method, and above-mentioned method for protecting support is applied
The work cycle is longer, and cost is also higher than pin timbering, also there is U-shaped steelframe method of support, although the supporting intensity of U-shaped steelframe compared with
Height, but the steel consumption amount of the support frame in U-shaped steel is bigger, and during the surrouding rock deformation in tunnel, the support of U-shaped steel
During frame stress, it is impossible to obtain effective decomposition and inversion, it is easy to cause the bending crumple of U-shaped steel, it is therefore necessary to U-shaped by increasing
The usage amount of steel, can eliminate above mentioned problem, and so resulting in engineering cost further increases.
Utility model content
The purpose of this utility model is just to provide a kind of three-dimensional bar frame and Combined concrete liner structure, it is possible to increase
To the support strength of roadway surrounding rock, construction cost is reduced.
To achieve the above object, the technical scheme of this combining structure utility model use is：
Three-dimensional bar frame and Combined concrete liner structure, including the three-dimensional bar frame set, institute are circumferentially enclosed along tunnel
State and be injected with concrete layer outside three-dimensional bar frame；
The three-dimensional bar frame includes major network screen work and time grid beam, and the main grid face is located at the interior wall cloth in tunnel
Put, between described grid beam and major network screen work arranged for interval and the two connected by dowel between frame；
The major network screen work is included along minor arc muscle described in the minor arc muscle circumferentially of tunnel along between the length direction in tunnel
It is multiple every arranging, connected between the minor arc muscle by main longitudinal rib, the length one in the main longitudinal rib length direction and tunnel
Cause and multiple along tunnel circumferential direction arranged for interval, master is additionally provided with the grid surface that the minor arc muscle is constituted with main longitudinal rib
Oblique arc muscle, length direction inwall bending of the oblique arc muscle of master along tunnel is diagonally disposed；
Described grid beam includes the secondary arc muscle arranged to tunnel center position, and described arc muscle is along tunnel circumferential skewing cloth
Put and multiple along the length direction interval setting in tunnel, connected between described arc muscle by secondary longitudinal rib, described longitudinal direction
Muscle length direction is consistent with the length in tunnel and multiple along tunnel circumferential direction arranged for interval, described arc muscle and time longitudinal rib
Time oblique arc muscle is additionally provided with the grid surface of composition, length direction of the described oblique arc muscle along tunnel bends oblique cloth
Put.
The supplementary features that the utility model is also present are：
Circumference of the three-dimensional bar frame along tunnel is divided into arc top rack section, both sides waist rack section and bottom rack
Section, is linked in sequence between arc top rack section, both sides waist rack section and bottom rack section and constitutes what is coincide with tunnel profile
Column construction, leads between arc top rack section and both sides waist rack section and between both sides waist rack section and bottom rack section
Rack end connector is crossed to connect as one.
The rack end connector includes being provided with first, second steel plate, first, second steel plate for inserting
The binding face connect between first, second jack of minor arc muscle and secondary arc muscle, first, second steel plate is provided with sheeting caps, institute
State and connected as one between first, second steel plate and sheeting caps by connecting bolt.
The section of first, second steel plate is ladder structure of right angle, where the straight waist edge of first, second steel plate
Straight middle surface is fitted with the two sides of sheeting caps, and first, second jack is separately positioned on the oblique waist edge institute of first, second steel plate
First, second oblique girdle plane on, length direction arranged for interval of first, second jack along tunnel is multiple, described
The hole core line of one jack is parallel with the hole core line of the second jack.
One end of dowel is arranged on minor arc muscle, main longitudinal rib and main oblique arc muscle knot in major network screen work between the frame
At chalaza position, the other end of dowel is arranged on secondary arc muscle in time grid beam, secondary longitudinal rib and secondary oblique between the frame
At the binding site position of arc muscle.
Compared with prior art, the technique effect that the utility model possesses is：Utilize above-mentioned three-dimensional bar frame and coagulation
The structure that soil layer is enclosed can realize effective support to tunnel, and roadway surrounding rock pressure is discharged to discharging first to major network screen work
On, the fenestral fabric that minor arc muscle, main longitudinal rib and main oblique arc muscle on major network screen work are constituted, support strength is high, and
It is transferred to by dowel between frame on the latticed grid beam constituted to secondary arc muscle, secondary longitudinal rib and secondary oblique arc muscle, it is whole
The intensity of individual three-dimensional bar frame is high, it is possible to increase to the support strength of roadway surrounding rock, reduces construction cost.
Brief description of the drawings
Fig. 1 is the end view that three-dimensional bar frame and Combined concrete liner structure are arranged in tunnel；
Fig. 2 is the part-structure schematic diagram of three-dimensional bar frame；
Fig. 3 and Fig. 4 are the structural representations at two kinds of visual angles of rack end connector.
Embodiment
With reference to Fig. 1 to Fig. 4, the utility model is further described：
Three-dimensional bar frame and Combined concrete liner structure, including the three-dimensional bar frame set, institute are circumferentially enclosed along tunnel A
State and concrete layer 20 is injected with outside three-dimensional bar frame；
The three-dimensional bar frame includes major network screen work and time grid beam, and the main grid face is located at tunnel A interior wall cloth
Put, between described grid beam and major network screen work arranged for interval and the two connected by dowel between frame 17；
The major network screen work includes the minor arc muscle 11 along tunnel A circumferentially, length of the minor arc muscle 11 along tunnel A
Direction arranged for interval is multiple, is connected between the minor arc muscle 11 by main longitudinal rib 12, the main length direction of longitudinal rib 12 with
Tunnel A length is consistent and multiple along tunnel A circumferential direction arranged for interval, and the minor arc muscle 11 is constituted with main longitudinal rib 12
Main oblique arc muscle 13 is additionally provided with grid surface, length direction inwall bending of the oblique arc muscle 13 of master along tunnel A is oblique
Arrangement；
Described grid beam includes the secondary arc muscle 14 arranged to tunnel A center positions, and described arc muscle 14 is circumferential along tunnel A
Curved arrangement and along tunnel A length direction be arranged at intervals it is multiple, connected between described arc muscle 14 by secondary longitudinal rib 15,
The described length direction of longitudinal rib 15 is consistent with tunnel A length and multiple along tunnel A circumferential direction arranged for interval, described time
It is additionally provided with time oblique arc muscle 16 on the grid surface that arc muscle 14 is constituted with time longitudinal rib 15, described oblique arc muscle 16 is along tunnel
A length direction bending is diagonally disposed；
With reference to shown in Fig. 1 and Fig. 2, the structure enclosed using above-mentioned three-dimensional bar frame and concrete layer can be realized to lane
Effective support in road, roadway surrounding rock pressure is discharged to discharging first to major network screen work, and the minor arc muscle 11, master on major network screen work are vertical
The fenestral fabric constituted to muscle 12 and main oblique arc muscle 13, support strength is high, and is transferred to by dowel between frame 17
On the latticed grid beam constituted to time arc muscle 14, secondary longitudinal rib 15 and secondary oblique arc muscle 16, whole three-dimensional bar frame
Intensity it is high, it is possible to increase to the support strength of roadway surrounding rock, reduce construction cost；
The truss-like structure that each above-mentioned rib is constituted, so that the intensity of three-dimensional reinforcing bar is extremely strong, is implementing to lane
During road A support, it is ensured that to tunnel A support strength.
As preferred scheme of the present utility model, circumference of the three-dimensional bar frame along tunnel A is divided into arc top rack
Section, both sides waist rack section and bottom rack section, it is suitable between arc top rack section, both sides waist rack section and bottom rack section
Sequence connects and composes the column construction being coincide with tunnel A profiles, between arc top rack section and both sides waist rack section and both sides
Connected as one between waist rack section and bottom rack section by rack end connector 30；
With reference to shown in Fig. 1, above-mentioned tunnel A's states three-dimensional bar frame section construction, and each linkage section is not with Tong
Cross rack end connector 30 to connect as one, at the top of above-mentioned tunnel A during pressure from surrounding rock release, be transferred to arc top rack
Section, and be transferred to by arc top rack section on the rack end connector 30 of both sides waist rack section upper end, can be by connector 30
It is arranged to the structure of extension type, or rack end connector 30 is directly arranged to spring structure, so as to fully absorbs
The pressure that arc top rack section applies, it is to avoid crumple problem caused by whole three-dimensional bar frame is concentrated due to stress；
During above-mentioned tunnel A two side pressure from surrounding rock release, so as to be transferred to upper end and waist rack section and bottom web
On rack end connector 30 in frame section, so as to realize the release to stress；
Similarly, when rack section in bottom meets with stresses, stress is transferred to the rack end connector 30 at bottom rack section two ends
On, so as to effectively realize the release and decomposition to stress, the power system of three-dimensional bar frame can be fully converted, three-dimensional bar-mat reinforcement is improved
The support strength to tunnel A of frame.
As further preferred scheme of the present utility model, with reference to shown in Fig. 3 and Fig. 4, the rack end connector 30
Including first, second steel plate 31,32, it is provided with first, second steel plate 31,32 for grafting minor arc muscle 11 and secondary arc
Binding face between first, second jack 33,34 of muscle 14, first, second steel plate 31,32 is provided with sheeting caps 35, institute
State and connected as one between first, second steel plate 31,32 and sheeting caps 35 by connecting bolt 36；
Minor arc muscle 11 and time arc muscle 14 on the abutting end of each linkage section of above-mentioned three-dimensional bar frame are planted respectively
In first, second jack 33,34 in the plate face of first, second steel plate 31,32, so as to realize the company between adjacent linkage section
Connect；
Each linkage section of above-mentioned three-dimensional bar frame is when bearing tunnel A pressures from surrounding rock release, so that minor arc muscle 11
In the plate face that first, second steel plate 31,32 is transferred to secondary arc muscle 14, the sheeting caps between first, second steel plate 31,32 is utilized
35 two can be deformed when first, second steel plate 31,32 bears mutual extruding force, so that avoid due to being rigidly connected, and
The problem of caused minor arc muscle 11 and time arc muscle 14 or the deformation of first, second steel plate 31,32, due to the spy of of sheeting caps 35 itself
Property, the energy that first, second steel plate 31,32 bears minor arc muscle 11 and the transmission of secondary arc muscle 14 can be fully absorbed, and then realize to whole
Decomposition, the conversion of individual power system so that whole three-dimensional bar frame intensity is enough to support tunnel A country rock；
Each above-mentioned linkage section is when bearing the release of tunnel A pressures from surrounding rock, and minor arc muscle 11 and time arc muscle 14 are transferred to the
First, on the second steel plate 31,32 first, second jack 33, the torque of 34 hole wall all directions, thus be easy to so that first,
Second jack 33,34 is deformed, therefore first, second steel plate 31,32 of the rack end connector 30 at this uses high intensity, height
Wear-resisting carbon steel, applies to the power of first, second jack 33,34 so as to effectively keep out minor arc muscle 11 and time arc muscle 14
Square.
Further, the section of first, second steel plate 31,32 is ladder structure of right angle, first, second steel plate
31st, the straight middle surface where 32 straight waist edge is fitted with the two sides of sheeting caps 35, and first, second jack 33,34 is set respectively
Put on first, second oblique girdle plane 311,321 where the oblique waist edge of first, second steel plate 31,32, described first, second inserts
Hole 33,34 is multiple along tunnel A length direction arranged for interval, the hole core line of first jack 33 and the second jack 34
Hole core line is parallel；
The joint face of each linkage section of above-mentioned three-dimensional bar frame is in the oblique of angle for one with tunnel A vertical sections
The end of face, the minor arc muscle 11 of three-dimensional bar frame and time arc muscle 14 constitutes each of an inclined-plane that is, above-mentioned three-dimensional bar frame
The joint face of individual linkage section, to ensure that first, second steel plate 31,32 of rack end connector 30 is implemented to minor arc muscle 11 and secondary
Arc muscle 14 is effectively connected, hence in so that first, second oblique girdle plane 311,321 and three-dimensional steel of first, second jack 33,34 of arrangement
The joint face of each linkage section of muscle rack is parallel, is inserted so as to ensure that minor arc muscle 11 and time arc muscle 14 stretch into first, second
The depth in hole 33,34 is consistent, so that it is guaranteed that the strong degree fixed to minor arc muscle 11 and time arc muscle 14, it is to avoid due to inserting depth not
Consistent the problem of, occur connecting illusive problem.
Specifically, between the frame one end of dowel 17 be arranged on minor arc muscle 11 in major network screen work, main longitudinal rib 12 with
And at the main oblique binding site position of arc muscle 13, the other end of dowel 17 is arranged on the secondary arc muscle in time grid beam between the frame
14th, at the binding site position of secondary longitudinal rib 15 and secondary oblique arc muscle 16；
The mode that dowel 17 is arranged between above-mentioned frame is in minor arc muscle 11, main longitudinal rib 12 and the main oblique knot of arc muscle 13
At chalaza position, arranged at the binding site position of secondary arc muscle 14, secondary longitudinal rib 15 and secondary oblique arc muscle 16 by some emitting shapes
It is multiple, so as to realize being stably connected between major network screen work and secondary grid beam.
Knot structure Alto construction procedures are built to whole lining below and do a simple introduction：
For arc top rack section, its radian is designed for 60 ° -120 °, radius of curvature is 2.65-2.95m；For both sides waist
Rack section, designs its radian for 50 ° -55 °, radius of curvature is 3.40-3.70m；For bottom rack section, designing its radian is
60 ° -80 °, radius of curvature is 4.80-5.10m；
After every section of rack section erection is finished, rack end connector 30, rack end are set up in Ge Bu racks lap-joint
A height of 20-30cm of first, second steel plate 31,32 of connector 30；Upper bottom is 5-8cm；Go to the bottom as 10-12cm；A length of 80-
120cm。
First, second steel plate 31,32 is having certain gradient with reinforcing bar contact surface, and machined two on the contact surface and arrange
First, the second jack 33,34, the minor arc muscle 11 of upper 5 corresponding major network screen works of the first jack 33 of row, lower 4 holes of the second jack 34 of row
The secondary arc muscle 14 of correspondence time grid beam, hole size is suitable with the diameter of minor arc muscle 11 and secondary arc muscle 14, is welded after reinforcing bar is accessed
Connect reinforcing.Transverse holes are away from 20-30cm, vertical pitch-row 20-30cm；One piece of sheeting caps is filled between first, second steel plate 31,32
35, allow the effect of pressure to reach；Simultaneously at first, second steel plate 31,32 and the corresponding position of the contact surface of sheeting caps 35
Four angles end, machined four apertures, then after rack is connected, insert connecting bolt 36, and pass through spiral shell in the other end
Mother tightens so that discontinuous two pack support forms a common stress of entirety originally.Connecting bolt 36 is 60 ° of national standard coarse thread,
Model M16-M20；The screw thread specification of nut is C grades of hex nuts, and nut specification is GB/T41-2000, M16-M20.
After the completion of overall rack is all set up, it is installed in place, then sprays gunite concrete so that three-dimensional bar frame
Turn into stress entirety with Combined concrete liner structure, can not only play flexibility again with rigidity effect and allow the effect of pressure.
Application method：
(1) drift section, is excavated according to design requirement in advance, the form of fracture of basket handle arch is excavated into.For Top section,
It is 60 ° -120 ° to excavate radian, and radius of curvature is 2.68-2.98m；For sidepiece section, excavate radian be 50 ° -55 °, curvature
Radius is 3.43-3.73m；For bottom section, it is 60 ° -80 ° to excavate radian, and radius of curvature is 4.83-5.13m.
Cleared up after the completion of excavation inside drift section and tunnel, rubble is transported in order；The position filling that will backbreak is complete
And irregular section part is cleared up smooth, complete the construction of preliminary roadway support section.
(2), corresponding each several part reinforcing bar is sheared according to design, the processing such as bending, by the reinforcing bar heap processed
A pile is put into, then scene is processed setting up on mould again, by the reinforcement welding of correspondence each several part to being pre-designed position,
The bar frame for finally completing the frame of a frame one is erected.
(3), the bar frame installation finished will be set up on ground according to design, passes through set rack end between frame and frame
Attachment means are connected, first-class screw and nut so that integrin rack combined set is finished, then is transported to required supported laneway from ground
Place is set up.For top rack, its radian is designed for 60 ° -120 °, radius of curvature is 2.65-2.95m；For sidepiece net
Frame, designs its radian for 50 ° -55 °, radius of curvature is 3.40-3.70m；For bottom rack, design its radian for 60 °-
80 °, radius of curvature is 4.80-5.10m.
Whole three-dimensional bar frame is combined by arc top rack section, both sides waist rack section and bottom rack section,
Set up to pre-position, also connected between one connection and one by the way of welding, whole tunnel face frames are set to position
Sprayed afterwards using gunite concrete so that overall three-dimensional bar frame is wrapped up by gunite concrete, then timely wet curing, is realized
The common stress of three-dimensional bar frame and concrete.
It should be noted that above example is only to illustrate the technical solution of the utility model, rather than its limitations, to the greatest extent
The utility model is described in detail with reference to the foregoing embodiments for pipe, it will be understood by those within the art that：Its
The technical scheme described in foregoing embodiments can still be modified, or which part technical characteristic is equal
Replace, and these modifications or replacement, the essence of appropriate technical solution is departed from each embodiment technical side of the utility model
The spirit and scope of case.
Claims (5)
1. three-dimensional bar frame and Combined concrete liner structure, it is characterised in that：Including circumferentially enclosing the three-dimensional set along tunnel (A)
Concrete layer (20) is injected with outside bar frame, the three-dimensional bar frame；
The three-dimensional bar frame includes major network screen work and time grid beam, and the inwall that the main grid face is located at tunnel (A) is arranged,
Between described grid beam and major network screen work arranged for interval and the two pass through dowel between frame (17) connect；
The major network screen work includes minor arc muscle (11) along tunnel (A) circumferentially, and the minor arc muscle (11) is along tunnel (A)
Length direction arranged for interval is multiple, is connected between the minor arc muscle (11) by main longitudinal rib (12), the main longitudinal rib (12)
Length direction is consistent with the length of tunnel (A) and multiple along tunnel (A) circumferential direction arranged for interval, the minor arc muscle (11) with
It is additionally provided with main oblique arc muscle (13) on the grid surface that main longitudinal rib (12) is constituted, the oblique arc muscle (13) of master is along tunnel
(A) length direction inwall bending is diagonally disposed；
Described grid beam includes the secondary arc muscle (14) arranged to tunnel (A) center position, and described arc muscle (14) is along tunnel (A)
Circumferential skewing is arranged and multiple along the length direction interval setting of tunnel (A), and secondary longitudinal direction is passed through between described arc muscle (14)
Muscle (15) is connected, and described longitudinal rib (15) length direction is consistent with the length of tunnel (A) and along between tunnel (A) circumferential direction
It is multiple every arranging, time oblique arc muscle (16) is additionally provided with the grid surface that described arc muscle (14) is constituted with time longitudinal rib (15),
Length direction bending of the described oblique arc muscle (16) along tunnel (A) is diagonally disposed.
2. three-dimensional bar frame according to claim 1 and Combined concrete liner structure, it is characterised in that：The three-dimensional
Circumference of the bar frame along tunnel (A) is divided into arc top rack section, both sides waist rack section and bottom rack section, arc top net
Be linked in sequence the column construction for constituting and being coincide with tunnel (A) profile, institute between frame section, both sides waist rack section and bottom rack section
State between arc top rack section and both sides waist rack section and between both sides waist rack section and bottom rack section by rack end
Connector (30) is connected as one.
3. three-dimensional bar frame according to claim 2 and Combined concrete liner structure, it is characterised in that：The rack
End connector (30) includes being provided with first, second steel plate (31,32), first, second steel plate (31,32) and is used for
Between first, second jack (33,34) of grafting minor arc muscle (11) and secondary arc muscle (14), first, second steel plate (31,32)
Binding face be provided with sheeting caps (35), by connecting spiral shell between first, second steel plate (31,32) and sheeting caps (35)
Bolt (36) is connected as one.
4. three-dimensional bar frame according to claim 3 and Combined concrete liner structure, it is characterised in that：Described
First, the section of the second steel plate (31,32) is ladder structure of right angle, where the straight waist edge of first, second steel plate (31,32)
Straight middle surface is fitted with the two sides of sheeting caps (35), and first, second jack (33,34) is separately positioned on first, second steel
On first, second oblique girdle plane (311,321) where the oblique waist edge of plate (31,32), first, second jack (the 33,34) edge
The length direction arranged for interval for tunnel (A) is multiple, the hole core line of first jack (33) and the hole of the second jack (34)
Core line is parallel.
5. three-dimensional bar frame according to claim 1 and Combined concrete liner structure, it is characterised in that：Between the frame
One end of dowel (17) is arranged on minor arc muscle (11), main longitudinal rib (12) and main oblique arc muscle (13) knot in major network screen work
At chalaza position, the other end of dowel (17) is arranged on secondary arc muscle (14) in time grid beam, secondary longitudinal rib between the frame
(15) and at the binding site position of secondary oblique arc muscle (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720215791.9U CN206545513U (en) | 2017-03-07 | 2017-03-07 | Three-dimensional bar frame and Combined concrete liner structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720215791.9U CN206545513U (en) | 2017-03-07 | 2017-03-07 | Three-dimensional bar frame and Combined concrete liner structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206545513U true CN206545513U (en) | 2017-10-10 |
Family
ID=59994932
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| Application Number | Title | Priority Date | Filing Date |
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| CN201720215791.9U Expired - Fee Related CN206545513U (en) | 2017-03-07 | 2017-03-07 | Three-dimensional bar frame and Combined concrete liner structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640146A (en) * | 2017-03-07 | 2017-05-10 | 安徽理工大学 | Three-dimensional steel bar net rack and concrete combined lining structure |
-
2017
- 2017-03-07 CN CN201720215791.9U patent/CN206545513U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106640146A (en) * | 2017-03-07 | 2017-05-10 | 安徽理工大学 | Three-dimensional steel bar net rack and concrete combined lining structure |
| CN106640146B (en) * | 2017-03-07 | 2020-02-07 | 安徽理工大学 | Three-dimensional reinforced bar net frame and concrete combined lining structure |
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