CN106703835A - Welding-free quick assembly supporting structure with grid steel frames for tunnel primary supporting construction - Google Patents
Welding-free quick assembly supporting structure with grid steel frames for tunnel primary supporting construction Download PDFInfo
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- CN106703835A CN106703835A CN201611236849.4A CN201611236849A CN106703835A CN 106703835 A CN106703835 A CN 106703835A CN 201611236849 A CN201611236849 A CN 201611236849A CN 106703835 A CN106703835 A CN 106703835A
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- tunnel
- grid steel
- steel plate
- anchor head
- grid
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 143
- 239000010959 steel Substances 0.000 title claims abstract description 143
- 238000010276 construction Methods 0.000 title claims abstract description 56
- 230000003014 reinforcing effect Effects 0.000 claims description 14
- 238000004873 anchoring Methods 0.000 claims description 11
- 238000010030 laminating Methods 0.000 claims description 2
- 239000002002 slurry Substances 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 10
- 238000005553 drilling Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 5
- 238000009434 installation Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000009412 basement excavation Methods 0.000 description 3
- 239000003245 coal Substances 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 239000011440 grout Substances 0.000 description 2
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 239000008267 milk Substances 0.000 description 2
- 210000004080 milk Anatomy 0.000 description 2
- 235000013336 milk Nutrition 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 238000004378 air conditioning Methods 0.000 description 1
- 238000003556 assay Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 238000007569 slipcasting Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
- 210000005239 tubule Anatomy 0.000 description 1
- 230000005641 tunneling Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D11/00—Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings in situ, e.g. by assembling
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
- E21D11/107—Reinforcing elements therefor; Holders for the reinforcing elements
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Civil Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a welding-free quick assembly supporting structure with grid steel frames for tunnel primary supporting construction. The welding-free quick assembly supporting structure comprises a plurality of grid steel arch frames. The grid steel arch frames are longitudinally arranged along tunnels at intervals, and each grid steel arch frame is anchored on the walls of the corresponding tunnel by foot locking anchor pipe connecting devices; the adjacent grid steel arch frames are connected with one another by longitudinal connecting devices. The welding-free quick assembly supporting structure has the advantages that the welding-free quick assembly supporting structure is simple and is convenient to mount and use, the grid steel arch frames are spliced and connected with the longitudinal connecting devices and foot locking devices, accordingly, welding can be omitted, and related problems of low construction speeds, pollution, difficulty in guaranteeing quality and the like due to welding can be solved; steel plates are preliminarily welded on the grid steel arch frames, holes are reserved in the steel plates, guide hole drilling can be carried out by the aid of the holes, and accordingly construction can be facilitated.
Description
Technical field
The present invention relates to a kind of Tunnel device, belong to constructing tunnel field of engineering technology, and in particular to a kind of
Grid steel frame for tunnel just branch construction exempts to weld quick assembling supporting construction.
Background technology
At present, composite lining extensive use in China's Tunnel Engineering, according to New Austrian Tunneling Method design concept, preliminary bracing is
Primary load bearing structure.The Composite Supporting System that Tunnel is made up of gunite concrete, anchor pole, steelframe etc., wherein steel
Frame has larger supporting intensity and rigidity, can significantly increase preliminary bracing ability.In order to increase the overall steady of every Pin steelframes
It is qualitative, it is attached frequently with longitudinally connected reinforcing bar between adjacent steelframe；In order to steelframe is anchored at into country rock deep, steel is given full play to
The rigidity and intensity of frame, steelframe step foot is standing to put lock pin anchor tube.Traditional longitudinally connected reinforcing bar and lock pin is used with steelframe
It is welded to connect, existing technology has problems with：
1st, welding has that speed of application is slow in tunnel, in not meeting the Eight Terms Guidelines of Modelling of Tunnel Excavation in Soft Rock ten
The requirement of " early closing "；
2nd, welding produces a large amount of toxic gases, pollutes environment, is unfavorable for the occupational health of workmen；
3rd, because site welding is connected to overhead welding and working space is narrow, welding quality is difficult to ensure that；
4th, weld job is carried out in gas tunnel higher to air-conditioning requirement, there is certain potential safety hazard.
One kind is disclosed in Chinese utility model patent CN 205477642U to grow up buried Gas Outburst tunnel solderless branch
Protection structure, is made up of preliminary bracing steelframe and advance support steel skeleton, and preliminary bracing steelframe is made up of many Pin bow members, and bow member passes through
The lock pin anchor tube being anchored in tunnel wall is fixedly connected with nut；Fixed by longitudinally connected pull bar and nut between adjacent bow member
Connection；The advance support steel skeleton protracts including many and the seamless steel pipe of anchoring of being in the milk forms pipe booth structure, and every seamless
Steel pipe one grout hole of correspondence, multiple grout holes are scattered in two rows, two irrigation and drainage slurry along the top and left and right side of tunnel control contour line
Hole mutual dislocation, and seamless steel pipe meet coal seam when with the part for passing coal seam, advance support steel skeleton also include along tunnel
Outward-dipping 40~50 ° of insertion rock stratum of wall or many advanced tubules of floral tube structure of coal seam and anchoring of being in the milk.The structure is deposited
Versatility it is poor, can not according to lock pin anchor tube actual condition adjustment anchor tube and steel arch-shelf between inclination angle, it cannot be guaranteed that anchor
The technical problem being stably connected with of pipe and steel arch-shelf, while cannot also realize the connection of the fast and stable of steel arch-shelf longitudinal direction.
The content of the invention
For above-mentioned prior art exist defect, the deficiency present invention aim to solve above-mentioned background technology,
There is provided a kind of grid steel frame for tunnel just branch construction to exempt to weld quick assembling supporting construction, it is not only simple in structure, assembling side
Just, and the slow speed of application that tunnel welding procedure causes, pollution, quality can be efficiently avoid it is difficult to ensure that the correlations such as card are asked
Topic.
In order to solve the above technical problems, exempting from weldering present invention employs the grid steel frame that such a is used for tunnel just branch construction
Quick assembling supporting construction, it is included along many Pin grids steel arch-shelfs of the longitudinally spaced arrangement in tunnel, grid steel arch described in per Pin
Frame is anchored in tunnel wall by locking pin anchor tube attachment means；Pass through one-above-the-other layout phase between the adjacent grid steel arch-shelf
Connect；The lock pin anchor tube attachment means include the guiding steel plate being fixed on the grid steel arch-shelf, the guiding steel plate
It is provided with the pilot hole passed through for lock pin anchor tube；Anchoring joint is installed on pilot hole in the guiding steel plate；The anchoring
Joint is made up of anchor head special bolt, nut and two groups of taperliners；The anchor head special bolt passes through pilot hole, described two groups
Taperliner is enclosed within anchor head special bolt and is located at the inside and outside two sides of the guiding steel plate respectively, and the nut screwing clamping is in anchor head
On special bolt, two groups of taperliners are brought into close contact with two sides inside and outside steel plate is oriented to, the central shaft of the anchor head special bolt
Line and the end slope for being oriented to steel plate；The axis direction of the anchor head special bolt is provided through grouting pipe；It is described
The inner of anchor head special bolt is connected with lock pin anchor tube；The lock pin anchor tube is installed in tunnel wall；Grid steel arch described in per Pin
Frame is welded with multiple junction steel plates along its ring equidistant placement in advance on the both sides end face along tunnel longitudinal direction；On the junction steel plate
It is provided with the slotted hole for connecting the one-above-the-other layout；The one-above-the-other layout is externally threaded for two is provided with
Longitudinally connected reinforcing bar；The two ends of the longitudinally connected reinforcing bar are each passed through what is be arranged symmetrically on the two neighboring grid steel arch-shelf
Slotted hole on junction steel plate is simultaneously realized affixed with the junction steel plate by locking nut.
In a kind of preferred embodiment of the invention, every group of taperliner includes wedge-shaped rubber backing plate peace steel pad
Plate；The wedge-shaped rubber backing plate and the flat billet coaxial package are on the anchor head special bolt；The flat billet
End face is fitted with the wedge-shaped end face of the wedge-shaped rubber backing plate, the other end of the flat billet and described is oriented to steel plate
It is oriented to hole end surface laminating；The planar end surface of the wedge-shaped rubber backing plate is spacing by the nut being connected on the anchor head special bolt
It is fixed.
In a kind of preferred embodiment of the invention, the wedge-shaped rubber backing plate inner face is inclined with backing plate axis, outward
End face is vertical with backing plate axis.
In a kind of preferred embodiment of the invention, the anchor head special bolt includes hexagonal bolt head；The hexagonal
Bolt head is located at anchor head special bolt outer end；The nut coordinates with anchor head special bolt the inner external screw thread, two groups of wedge shapes
The pilot hole of pad and guiding steel plate is located between nut and the hexagonal bolt head of anchor head special bolt.
In a kind of preferred embodiment of the invention, the outer end of the anchor head special bolt is disposed with and the Grouting Pipe
The filling adaptor of road connection.
In a kind of preferred embodiment of the invention, the grid steel arch-shelf includes coaxially arranged interior bow member and bowed out
Frame, Figure of eight is provided between the interior bow member and the outer bow member；It is described guiding steel plate be welded in advance on the outer bow member and with
Tunnel wall parallel arrangement；The pilot hole is symmetricly set on the guiding steel plate of tunnel steelframe both sides.
In a kind of preferred embodiment of the invention, inner external screw thread and the lock pin anchor tube of the anchor head special bolt
The internal thread of outer end is engaged.
In a kind of preferred embodiment of the invention, the connection steel on the both sides end face of same grid steel arch-shelf is arranged in
The interlaced arrangement of plate.
In a kind of preferred embodiment of the invention, the length of longitudinally connected reinforcing bar is steelframe longitudinal pitch+steelframe peace
The longitudinal tolerance value of dress.
In a kind of preferred embodiment of the invention, the slotted hole on junction steel plate is waist-shaped hole.
In a kind of preferred embodiment of the invention, the two neighboring connection steel of same grid steel arch-shelf homonymy is welded in
Spacing between plate 2 is equal to length/2 of longitudinally connected reinforcing bar 3.
The beneficial effects of the invention are as follows：It is simple structure of the present invention, easy to install, by grid steel arch-shelf and lock pin anchor
Assembled connection between pipe, eliminate welding, it is to avoid speed of application that welding causes is slow, pollution, quality are difficult to ensure and the correlation such as demonstrate,prove
Problem；Simultaneously by grid steel arch-shelf prewelding steel plate, and the reserving hole on steel plate, pilot hole being carried out using hole,
Convenient construction；And the anchoring joint for specially designing can replace the different wedge-shaped rubber backing plate of wedge degree so as to reality according to specific requirement
Existing steelframe and the adjustment for locking pin anchor tube inclination angle；By setting anchoring joint and the reserved injected hole in anchoring joint, convenient connection
With construction, accelerate installation rate, grid steel arch-shelf is fixed by setting one-above-the-other layout, improve installation speed
Degree, correction is flexible, it is ensured that the adjustability connected in the range of tolerance is installed in steelframe.
Brief description of the drawings
Fig. 1 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Structural representation；
Fig. 2 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Along the front view of tunnel longitudinal direction；
Fig. 3 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Along the top view of tunnel longitudinal direction；
Fig. 4 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Lock the guiding steel plate structure schematic diagram of pin anchor tube attachment means；
Fig. 5 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Lock the structural representation of pin anchor tube attachment means；
Fig. 6 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Lock pin anchor tube attachment means blast diagram；
Fig. 7 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Lock the anchoring joint design schematic diagram of pin anchor tube attachment means；
Fig. 8 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
Lock the structural representation of the anchor head special bolt of pin anchor tube attachment means；
Fig. 9 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
The attachment structure schematic diagram of one-above-the-other layout and grid steel arch-shelf；
Figure 10 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
One-above-the-other layout longitudinally connected bar construction schematic diagram；
Figure 11 is that a kind of grid steel frame for tunnel just branch construction of the embodiment of the present invention exempts to weld quick assembling supporting construction
One-above-the-other layout junction steel plate structural representation；
In figure：A- grid steel arch-shelfs, B- lock pin anchor tube attachment means, C- one-above-the-other layouts, bow member in A-1-, outside A-2-
Bow member, A-3- Figure of eights, B-2 is oriented to steel plate, and B-2-1- is oriented to circular hole；B-3- anchors joint；B-3-1- anchor head special bolts；B-
3-2- wedge-shaped rubber backing plates；The flat billets of B-3-3-；B-3-4- nuts；B-3-1-1- filling adaptors；B-3-1-2- special bolts
Head；B-3-1-3- reserves hollow grouting pipe；B-3-1-4- special bolt screw threads；B-4- locks pin anchor tube；B-4-1- locks pin anchor
Pipe end sets internal thread, C-2- junction steel plates, C-3- slotted holes, the longitudinally connected reinforcing bars of C-4-, C-5- locking nuts, outside C-6-
Screw thread.
Specific embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only used to explain the present invention, not
For limiting the present invention.
Exempt to weld quick assembling supporting construction as a kind of grid steel frame for tunnel just branch construction shown in Fig. 1 to Fig. 2
Knowable to structural representation, carrying when being constructed present invention is mainly used for tunnel initial-stage, it is included along the longitudinally spaced arrangement in tunnel
Many Pin grids steel arch-shelf A, be anchored in tunnel wall by locking pin anchor tube attachment means B per Pin grid steel arch-shelf A；Adjacent grid
It is connected with each other by one-above-the-other layout C between steel arch-shelf A；Quick fixation for the ease of the present invention per Pin grid steel arch-shelfs A,
Lock pin anchor tube attachment means B for stationary grizzly steel arch-shelf includes the guiding steel plate B-2 being fixed on grid steel arch-shelf A, leads
The pilot hole B-2-1 passed through for lock pin anchor tube B-4 is provided with to steel plate B-2；It is oriented on the pilot hole B-2-1 in steel plate B-2 and pacifies
Equipped with anchoring joint B-3；Anchoring joint B-3 is made up of anchor head special bolt B-3-1, nut B-3-4 and two groups of taperliners；Anchor
Head special bolt B-3-1 passes through pilot hole B-2-1, two groups of taperliners to be enclosed within anchor head special bolt B-3-1 and be located at respectively
The inside and outside two sides of steel plate B-2 is oriented to, nut B-3-4 is tightened on anchor head special bolt B-3-1, by two groups of taperliners and guiding
Two sides is brought into close contact inside and outside steel plate B-2, the central axis of anchor head special bolt B-3-1 and the end slope for being oriented to steel plate B-2；Anchor
The axis direction of head special bolt B-3-1 is provided through grouting pipe B-3-1-3；Anchor head special bolt B-3-1 it is inner with
Lock pin anchor tube B-4 is connected；Lock pin anchor tube B-4 is installed in tunnel wall, every group of taperliner include wedge-shaped rubber backing plate B-3-2 and
Flat billet B-3-3；Wedge-shaped rubber backing plate B-3-2 peace billet B-3-3 coaxial packages are on anchor head special bolt B-3-1；
The end face of flat billet B-3-3 is fitted with the wedge-shaped end face of wedge-shaped rubber backing plate B-3-2, the other end of flat billet B-3-3
Fitted with the pilot hole B-2-1 end faces for being oriented to steel plate B-2 in face；The planar end surface of wedge-shaped rubber backing plate B-3-2 is by being connected to anchor head
The spacing fixations of nut B-3-4 on special bolt B-3-1；Wedge-shaped rubber backing plate B-3-2 inner faces are inclined with backing plate axis, outer end
Face is vertical with backing plate axis；Anchor head special bolt B-3-1 includes hexagonal bolt head；Hexagonal bolt head is located at anchor head special bolt B-
3-1 outer ends；The external screw thread cooperation of nut B-3-4 and anchor head special bolt B-3-1 the inners, two groups of taperliners and guiding steel plate 2
Pilot hole B-2-1 is located between nut B-3-4 and the hexagonal bolt head of anchor head special bolt B-3-1；Anchor head special bolt B-3-1
Outer end be disposed with the filling adaptor B-3-1-1 connected with grouting pipe B-3-1-3；Grid steel arch-shelf A includes coaxially arranged
Interior bow member A-1 and outer bow member A-2, Figure of eight A-3 is provided between interior bow member A-1 and outer bow member A-2；It is oriented to steel plate B-2 preweldings
It is arranged in parallel on outer bow member A-2 and with tunnel wall；Pilot hole B-2-1 is symmetricly set in the guiding of tunnel steelframe B-1 both sides
On steel plate B-2；The inner external screw thread of anchor head special bolt B-3-1 is engaged with the internal thread of lock pin anchor tube B-4 outer ends.This hair
Bright every Pin grids steel arch-shelf A is welded with multiple connection steel along its ring equidistant placement in advance on the both sides end face along tunnel longitudinal direction
Plate C-2；The slotted hole C-3 for connecting one-above-the-other layout C is provided with junction steel plate C-2；One-above-the-other layout C is two
It is provided with externally threaded longitudinally connected reinforcing bar C-4；The two ends of longitudinally connected reinforcing bar C-4 are each passed through two neighboring grid steel arch
The slotted hole C-3 on junction steel plate C-2 that is arranged symmetrically on frame A simultaneously realizes consolidating with junction steel plate C-2 by locking nut C-5
Connect, for the ease of the reasonable Arrangement of longitudinally connected reinforcing bar C-4, be arranged in the connection on the both sides end face of same grid steel arch-shelf A
The interlaced arrangements of steel plate C-2；The length of longitudinally connected reinforcing bar C-4 is steelframe longitudinal pitch inclined plus steelframe installation longitudinal direction permission
Difference, the slotted hole on junction steel plate C-2 is waist-shaped hole, is welded in the two neighboring junction steel plate of same grid steel arch-shelf homonymy
Spacing between C-2 is equal to length/2 of longitudinally connected reinforcing bar C-4.
Its installation step of the invention is as follows：
Step one：Process：In processing factory, processing is oriented to steel plate B-2 and in the reserved pilot hole B-2-1 in both sides, in
Sky lock pin anchor tube B-4 sets internal thread B-4-1, junction steel plate C-2 of the processing with slotted hole C-3 by steelframe side head, according to
Construction and shoulder height requirement, steel plate B-2 and junction steel plate C-2 is oriented in grid steel arch-shelf A preweldings.
Step 2：Boring procedure：Job site is excavated, and after the treatment of excavation face out break, applies just pneumatically placed concrete, grid steel
Bow member A is in place, installs one-above-the-other layout, installation quality after the assay was approved, using being oriented to the pilot hole B- that is reserved on steel plate B-2
2-1 is drilled, general by being set downwards with horizontal direction 30-45° angle degree, studies intensively depth more than anchor tube length certain distance.
Step 3, tubulature process：After the completion of drilling, lock pin anchor tube B-4 drills from pilot hole B-2-1 through insertion.
Step 4, assembled process：Anchor head special bolt B-3-1 first passes through wedge-shaped rubber backing plate B-3-2, flat billet B-3-
3rd, pilot hole B-2-1, nut B-3-4 are clamped with steel plate B-2 assembly is oriented to, and then rotating special bolt head B-3-1-2 makes spiral shell
Bolt bottom is connected with lock pin anchor tube B-4 terminations, and then rotating nut B-3-4 locks anchor head B-3 and steel plate B-2, finally by
The filling adaptor B-3-1-1 set on anchor head special bolt B-3-1 carries out slip casting operation, is finally completed lock pin anchor tube by design position
Put and angle positioning can guarantee that lock pin anchor tube can effectively become one with steelframe again simultaneously.
Step 5, multiple spray process：After completing above-mentioned operation, it is qualified by inspection after carry out multiple spray operation by design requirement, connect
Carries out lower circulation excavation and supporting operation.
It should be appreciated that the above, specific embodiment only of the invention, but protection scope of the present invention is not
Be confined to this, any those of ordinary skill in the art disclosed herein technical scope in, the change that can be readily occurred in
Or replace, should all be included within the scope of the present invention.
Claims (8)
1. a kind of grid steel frame for tunnel just branch construction exempts to weld quick assembling supporting construction, including longitudinally spaced along tunnel
Many Pin grids steel arch-shelfs (A) of arrangement, grid steel arch-shelf (A) described in per Pin is anchored at tunnel by locking pin anchor tube attachment means (B)
On road wall；It is connected with each other by one-above-the-other layout (C) between the adjacent grid steel arch-shelf (A)；It is characterized in that：
Lock pin anchor tube attachment means (B) includes the guiding steel plate (B-2) being fixed on the grid steel arch-shelf (A), described
It is oriented to steel plate (B-2) and is provided with the pilot hole (B-2-1) passed through for lock pin anchor tube (B-4)；Leading in guiding steel plate (B-2)
Joint (B-3) is anchored to being provided with hole (B-2-1)；Anchoring joint (B-3) is by anchor head special bolt (B-3-1), nut
(B-3-4) constituted with two groups of taperliners；The anchor head special bolt (B-3-1) passes through pilot hole (B-2-1), two groups of wedges
Shape pad is enclosed within anchor head special bolt (B-3-1) and is located at the inside and outside two sides of guiding steel plate (B-2), the nut respectively
(B-3-4) it is tightened on anchor head special bolt (B-3-1), by two groups of taperliners with to be oriented to two sides inside and outside steel plate (B-2) tight
Laminating, the central axis of the anchor head special bolt (B-3-1) and the end slope for being oriented to steel plate (B-2)；The anchor head
The axis direction of special bolt (B-3-1) is provided through grouting pipe (B-3-1-3)；The anchor head special bolt (B-3-1)
It is inner with lock pin anchor tube (B-4) and be connected；Lock pin anchor tube (B-4) is installed in tunnel wall；
Multiple is welded with both sides end face of the grid steel arch-shelf (A) along tunnel longitudinal direction described in per Pin in advance along its circumferentially disposed connection
Steel plate (C-2)；The slotted hole (C-3) for connecting the one-above-the-other layout (C) is provided with the junction steel plate (C-2)；
The one-above-the-other layout (C) externally threaded longitudinally connected reinforcing bar (C-4) for two is provided with；The longitudinally connected reinforcing bar
(C-4) two ends are each passed through oval on the junction steel plate (C-2) being arranged symmetrically on the two neighboring grid steel arch-shelf (A)
Simultaneously realized by locking nut (C-5) affixed with the junction steel plate (C-2) in hole (C-3).
2. a kind of grid steel frame for tunnel just branch construction according to claim 1 exempts to weld quick assembling supporting construction,
It is characterized in that：Every group of taperliner includes wedge-shaped rubber backing plate (B-3-2) peace billet (B-3-3)；The wedge shape
Rubber mat plate (B-3-2) and flat billet (B-3-3) coaxial package are on the anchor head special bolt (B-3-1)；It is described
The end face of flat billet (B-3-3) is fitted with the wedge-shaped end face of the wedge-shaped rubber backing plate (B-3-2), the flat billet
(B-3-3) fitted with pilot hole (B-2-1) end face of guiding steel plate (B-2) other end；The wedge-shaped rubber backing plate
(B-3-2) planar end surface is by nut (B-3-4) spacing fixation for being connected on the anchor head special bolt (B-3-1).
3. a kind of grid steel frame for tunnel just branch construction according to claim 2 exempts to weld quick assembling supporting construction,
It is characterized in that：Wedge-shaped rubber backing plate (B-3-2) inner face is inclined with backing plate axis, and outer face is vertical with backing plate axis.
4. a kind of grid steel frame for tunnel just branch construction according to claim 1 exempts to weld quick assembling supporting construction,
It is characterized in that：The anchor head special bolt (B-3-1) includes hexagonal bolt head；The hexagonal bolt head is located at the special spiral shell of anchor head
Bolt (B-3-1) outer end；The nut (B-3-4) coordinates with anchor head special bolt (B-3-1) the inner external screw thread, two groups of wedge shapes
The pilot hole (B-2-1) of pad and guiding steel plate (2) is located at the hexagonal spiral shell of nut (B-3-4) and anchor head special bolt (B-3-1)
Between bolt head.
5. a kind of grid steel frame for tunnel just branch construction according to claim 1 exempts to weld quick assembling supporting construction,
It is characterized in that：The outer end of the anchor head special bolt (B-3-1) is disposed with the note connected with the grouting pipe (B-3-1-3)
Slurry joint (B-3-1-1).
6. a kind of grid steel frame for tunnel just branch construction according to claim 1 exempts to weld quick assembling supporting construction,
It is characterized in that：The grid steel arch-shelf (A) includes coaxially arranged interior bow member (A-1) and outer bow member (A-2), the interior bow member
(A-1) Figure of eight (A-3) is provided with and the outer bow member (A-2) between；Guiding steel plate (B-2) is welded in the outer bow member in advance
(A-2) it is arranged in parallel on and with tunnel wall；The pilot hole (B-2-1) is symmetricly set in leading for tunnel steelframe (B-1) both sides
To on steel plate (B-2).
7. a kind of grid steel frame for tunnel just branch construction according to claim 1-6 any claims exempts from weldering quickly
Assembling supporting construction, it is characterised in that：The inner external screw thread of the anchor head special bolt (B-3-1) and lock pin anchor tube (B-4)
The internal thread of outer end is engaged.
8. a kind of grid steel frame for tunnel just branch construction according to claim 1 exempts to weld quick assembling supporting construction,
It is characterized in that：It is arranged in junction steel plate (C-2) the interlaced arrangement on the both sides end face of same grid steel arch-shelf (A).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611236849.4A CN106703835B (en) | 2016-12-28 | 2016-12-28 | It is a kind of at the beginning of tunnel branch construct grid steel frame exempt from weld quick assembling supporting construction |
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| CN201611236849.4A CN106703835B (en) | 2016-12-28 | 2016-12-28 | It is a kind of at the beginning of tunnel branch construct grid steel frame exempt from weld quick assembling supporting construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107676110A (en) * | 2017-08-23 | 2018-02-09 | 中铁二十二局集团有限公司 | A kind of attachment structure for locking pin anchor and supporting bow member |
| CN108150104A (en) * | 2018-02-09 | 2018-06-12 | 中交隧道工程局有限公司 | A kind of lock foot anchor tube drilling-hole positioning device and anchor tube fixing means |
| CN108518229A (en) * | 2018-04-24 | 2018-09-11 | 中铁五局集团第五工程有限责任公司 | Large deformation weak broken wall rock outsized section tunnel excavation supporting structure and construction method |
| CN113006827A (en) * | 2021-02-23 | 2021-06-22 | 中铁十九局集团第三工程有限公司 | Rigid locking foot supporting structure for steel frame of soft rock tunnel |
| CN113464148A (en) * | 2021-07-30 | 2021-10-01 | 中铁二十三局集团有限公司 | Construction method of large structure with Xigeda stratum section shallow-buried underground ground surface |
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| CN107676110A (en) * | 2017-08-23 | 2018-02-09 | 中铁二十二局集团有限公司 | A kind of attachment structure for locking pin anchor and supporting bow member |
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| CN108518229A (en) * | 2018-04-24 | 2018-09-11 | 中铁五局集团第五工程有限责任公司 | Large deformation weak broken wall rock outsized section tunnel excavation supporting structure and construction method |
| CN113006827A (en) * | 2021-02-23 | 2021-06-22 | 中铁十九局集团第三工程有限公司 | Rigid locking foot supporting structure for steel frame of soft rock tunnel |
| CN113464148A (en) * | 2021-07-30 | 2021-10-01 | 中铁二十三局集团有限公司 | Construction method of large structure with Xigeda stratum section shallow-buried underground ground surface |
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