CN106761847B - It is a kind of at the beginning of tunnel branch construct profile steel frame exempt from weld pin-connected panel supporting construction - Google Patents
It is a kind of at the beginning of tunnel branch construct profile steel frame exempt from weld pin-connected panel supporting construction Download PDFInfo
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- CN106761847B CN106761847B CN201611238185.5A CN201611238185A CN106761847B CN 106761847 B CN106761847 B CN 106761847B CN 201611238185 A CN201611238185 A CN 201611238185A CN 106761847 B CN106761847 B CN 106761847B
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- tunnel
- shelf
- fashioned iron
- special bolt
- anchor head
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 139
- 239000010959 steel Substances 0.000 title claims abstract description 139
- 238000010276 construction Methods 0.000 title claims abstract description 32
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 88
- 229910052742 iron Inorganic materials 0.000 claims abstract description 44
- 230000003014 reinforcing effect Effects 0.000 claims description 26
- 238000004873 anchoring Methods 0.000 claims description 12
- 239000000203 mixture Substances 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 2
- 239000004744 fabric Substances 0.000 claims 1
- 238000003466 welding Methods 0.000 abstract description 10
- 238000010586 diagram Methods 0.000 description 10
- 238000000034 method Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 5
- 239000003245 coal Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 239000011435 rock Substances 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 238000005553 drilling Methods 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
- 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
- 230000007812 deficiency Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000011378 shotcrete Substances 0.000 description 1
- 239000007921 spray Substances 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
- E21D11/14—Lining predominantly with metal
- E21D11/18—Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches
-
- 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
- E21D11/14—Lining predominantly with metal
- E21D11/28—Longitudinal struts, i.e. longitudinal connections between adjoining arches
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Lining And Supports For Tunnels (AREA)
Abstract
The invention discloses a kind of profile steel frames constructed for branch at the beginning of tunnel to exempt to weld pin-connected panel supporting construction comprising along more Pin fashioned iron steel arch-shelfs that tunnel longitudinal gap is arranged, fashioned iron steel arch-shelf described in every Pin is anchored in tunnel wall by locking foot anchor tube attachment device；It is connected with each other between the adjacent fashioned iron steel arch-shelf by one-above-the-other layout.It is the configuration of the present invention is simple, easy to install and use, it is connected by assembled between fashioned iron steel arch-shelf and one-above-the-other layout, lock foot device, eliminates welding, avoid the relevant issues such as speed of application caused by welding is slow, pollute, quality is difficult to guarantee；Simultaneously by fashioned iron steel arch-shelf prewelding steel plate, and reserving hole on the steel plate, pilot hole is carried out using hole, facilitates construction.
Description
Technical field
The present invention relates to a kind of Tunnel devices, belong to constructing tunnel field of engineering technology, and in particular to a kind of
The profile steel frame constructed for branch at the beginning of tunnel is exempted to weld pin-connected panel supporting construction.
Background technique
Currently, composite lining is widely applied 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 of gunite concrete, anchor pole, steelframe etc., wherein steel
Frame has biggish supporting intensity and rigidity, can significantly increase preliminary bracing ability.In order to increase the whole steady of every Pin steelframe
It is qualitative, it is attached between adjacent steelframe frequently with longitudinally connected reinforcing bar；In order to which steelframe is anchored at country rock deep, steel is given full play to
The stiffness and strength of frame, steelframe step foot is standing to set lock foot anchor tube.Traditional longitudinally connected reinforcing bar and lock foot and steelframe use
It is welded to connect, existing technology has the following problems:
1, welding has that speed of application is slow in tunnel, does not meet in ten Eight Terms Guidelines of Modelling of Tunnel Excavation in Soft Rock
The requirement of " early closing "；
2, welding generates a large amount of toxic gases, pollutes environment, is unfavorable for the occupational health of construction personnel；
3, since site welding is connected to overhead welding and working space is narrow, welding quality is difficult to ensure；
4, progress weld job is higher to air-conditioning requirement in gas tunnel, and there are certain security risks.
One kind is disclosed in Chinese utility model patent CN 205477642U to grow up buried Gas Outburst tunnel solderless branch
Protection structure is made of preliminary bracing steelframe and advance support steel skeleton, and preliminary bracing steelframe is made of more Pin arches, and arch passes through
The lock foot anchor tube being anchored in tunnel wall is fixedly connected with nut；It is fixed between adjacent arch by longitudinally connected pull rod and nut
Connection；The advance support steel skeleton include more protract and the seamless steel pipe for anchoring of being in the milk formed pipe booth structure, every is seamless
Steel pipe corresponds to a grout hole, and multiple grout holes are scattered in two rows, two rows grouting along the top of tunnel control contour line and left and right side
Hole mutual dislocation, and seamless steel pipe when meeting coal seam with the part for being pierced by coal seam, advance support steel skeleton further includes along tunnel
Wall is inclined outwardly the advanced tubule of 40~50 ° of insertion rock stratum or coal seam and more floral tube structures of anchoring of being in the milk.The structure is deposited
Versatility it is poor, cannot inclination angle between the actual condition adjustment anchor tube and steel arch-shelf according to lock foot anchor tube, it cannot be guaranteed that anchor
Pipe and the technical issues of being stably connected with of steel arch-shelf, while also cannot achieve the connection of the fast and stable of steel arch-shelf longitudinal direction.
Summary of the invention
In view of the above-mentioned drawbacks of the prior art, the purpose of the present invention is to solve the deficiency of the above background technology,
There is provided it is a kind of at the beginning of tunnel branch construct profile steel frame exempt from weld pin-connected panel supporting construction, be not only simple in structure, be easy to assembly,
And the relevant issues such as speed of application caused by tunnel welding procedure is slow, pollute, quality is difficult to guarantee can be efficiently avoided.
In order to solve the above technical problems, present invention employs such a profile steel frames constructed for branch at the beginning of tunnel to exempt to weld
Pin-connected panel supporting construction comprising along more Pin fashioned iron steel arch-shelfs that tunnel longitudinal gap is arranged, fashioned iron steel arch-shelf described in every Pin
It is anchored in tunnel wall by locking foot anchor tube attachment device；It is mutual by one-above-the-other layout between the adjacent fashioned iron steel arch-shelf
Connection；The lock foot anchor tube attachment device includes the guiding steel plate being fixed on the fashioned iron steel arch-shelf, on the guiding steel plate
Equipped with the pilot hole passed through for lock foot anchor tube；Anchoring connector is installed on pilot hole in the guiding steel plate；The anchoring connects
Head is made of anchor head special bolt, nut and two groups of taperliners；The anchor head special bolt passes through pilot hole, two groups of wedges
Shape gasket covers on anchor head special bolt and is located at the inside and outside two sides of the guiding steel plate, and it is special that the nut is tightened in anchor head
With on bolt, two groups of taperliners and two sides inside and outside guiding steel plate are fitted closely, the central axis of the anchor head special bolt
With the end slope of the guiding steel plate；The axis direction of the anchor head special bolt is provided with through grouting pipe；The anchor
The inner end of head special bolt is connected with lock foot anchor tube；The lock foot anchor tube is installed in tunnel wall；The one-above-the-other layout with
The steel web of the fashioned iron steel arch-shelf connects；It is equal that the one-above-the-other layout by one end is provided with externally threaded L shape reinforcing bar, both ends
Setting internal thread double thread sleeve and both ends are provided with externally threaded longitudinally connected reinforcing bar composition；The L shape reinforcing bar
One end of undressed screw thread is welded in advance on the steel web of a fashioned iron steel arch-shelf, the end of thread of the L shape reinforcing bar, described pair
Head thread sleeve and the longitudinally connected reinforcing bar three are threadedly coupled along the longitudinally coaxial arrangement in tunnel and mutually, described longitudinally connected
The other end of reinforcing bar is connect by locking nut with the steel web of the adjacent fashioned iron steel arch-shelf；With the longitudinally connected reinforcing bar
Slotted hole is provided on the steel web of the fashioned iron steel arch-shelf of connection.
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
The tapered end face paste of one end face and the wedge-shaped rubber backing plate is closed, the other end of the flat billet and the guiding steel plate
It is oriented to hole end surface fitting；The planar end surface of the wedge-shaped rubber backing plate is limited 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 and backing plate axis are tilted, outside
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 and anchor head special bolt inner end external screw thread cooperate, two groups of wedge shapes
The pilot hole of gasket and guiding steel plate is 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 guiding steel plate is welded in the flange plate of the fashioned iron steel arch-shelf in advance
Above and with tunnel wall surface it is arranged in parallel；The pilot hole is symmetrically disposed on the guiding steel plate of tunnel steelframe both sides.
In a kind of preferred embodiment of the invention, the external screw thread and lock foot anchor tube of the inner end of the anchor head special bolt
The internal screw thread of outer end matches.
In a kind of preferred embodiment of the invention, the slotted hole on junction steel plate is waist-shaped hole.
The beneficial effects of the present invention are: it is the configuration of the present invention is simple, easy to install and use, pass through fashioned iron steel arch-shelf and lock foot anchor
Assembly connection between pipe, eliminates welding, avoids the correlations such as speed of application caused by welding is slow, pollute, quality is difficult to guarantee
Problem；Simultaneously by fashioned iron steel arch-shelf prewelding steel plate, and reserving hole on the steel plate, pilot hole is carried out using hole,
Facilitate construction；And the anchoring connector specially designed can replace the different wedge-shaped rubber backing plate of wedge degree according to specific requirement to reality
Existing steelframe and the adjustment for locking foot anchor tube inclination angle；Injected hole is reserved by setting anchoring connector and in anchoring connector, facilitates connection
With construction, accelerate installation speed, fashioned iron steel arch-shelf is fixed by the way that one-above-the-other layout is arranged, improves installation speed
Degree, correction are flexible and convenient, it is ensured that the adjustability connected within the scope of steelframe installation tolerance.
Detailed description of the invention
Fig. 1 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the knot of pin-connected panel supporting construction
Structure schematic diagram；
Fig. 2 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the edge of pin-connected panel supporting construction
The main view of tunnel longitudinal direction；
Fig. 3 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the edge of pin-connected panel supporting construction
The top view of tunnel longitudinal direction；
Fig. 4 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the lock of pin-connected panel supporting construction
The guiding steel plate structure schematic diagram of foot anchor tube attachment device；
Fig. 5 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the lock of pin-connected panel supporting construction
The structural schematic diagram of foot anchor tube attachment device；
Fig. 6 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the lock of pin-connected panel supporting construction
Foot anchor tube attachment device explosion diagram；
Fig. 7 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the lock of pin-connected panel supporting construction
The anchoring joint structure schematic diagram of foot anchor tube attachment device；
Fig. 8 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the lock of pin-connected panel supporting construction
The structural schematic diagram of the anchor head special bolt of foot anchor tube attachment device；
Fig. 9 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld the vertical of pin-connected panel supporting construction
To the attachment structure schematic diagram of attachment device and fashioned iron steel arch-shelf；
Figure 10 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld pin-connected panel supporting construction
The attachment structure schematic diagram main view of one-above-the-other layout and fashioned iron steel arch-shelf；
Figure 11 is that a kind of profile steel frame constructed for branch at the beginning of tunnel of the embodiment of the present invention is exempted to weld pin-connected panel supporting construction
One-above-the-other layout structural schematic diagram
In figure: A- fashioned iron steel arch-shelf, B- lock foot anchor tube attachment device, C- one-above-the-other layout, A-1- steel web, the A-2- wing
Listrium, B-2 are oriented to steel plate, and B-2-1- is oriented to circular hole；B-3- anchors connector；B-3-1- anchor head special bolt；B-3-2- wedge shape rubber
Rubber cushion plate；The flat billet of B-3-3-；B-3-4- nut；B-3-1-1- filling adaptor；B-3-1-2- special bolt head；B-3-1-
3- reserves hollow grouting pipe；B-3-1-4- special bolt screw thread；B-4- locks foot anchor tube；B-4-1- locks in the setting of foot anchor tube end
Screw thread, C-3-L shape reinforcing bar, C-4- slotted hole, C-5- locking nut, C-6- screw shell, the longitudinally connected reinforcing bar of C-7-.
Specific embodiment
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that described herein, specific examples are only used to explain the present invention, not
For limiting the present invention.
As Fig. 1 to it is shown in Fig. 2 it is a kind of for tunnel at the beginning of branch construct profile steel frame exempt from weld pin-connected panel supporting construction knot
Structure schematic diagram is it is found that present invention is mainly used for carryings when tunnel initial-stage construction comprising along tunnel longitudinal gap arrangement
More Pin fashioned iron steel arch-shelf A, every Pin fashioned iron steel arch-shelf A are anchored in tunnel wall by locking foot anchor tube attachment device B；Adjacent fashioned iron steel
It is connected with each other between arch A by one-above-the-other layout C；For the ease of the quick fixation of the every Pin fashioned iron steel arch-shelf A of the present invention, use
Include the guiding steel plate B-2 being fixed on fashioned iron steel arch-shelf A in the lock foot anchor tube attachment device B of fixed fashioned iron steel arch-shelf, is oriented to
Steel plate B-2 is equipped with the pilot hole B-2-1 passed through for lock foot anchor tube B-4；It is installed on pilot hole B-2-1 in guiding steel plate B-2
There is anchoring connector B-3；Anchoring connector B-3 is made 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, and two groups of taperliners, which are covered on anchor head special bolt B-3-1 and are located at, leads
To the inside and outside two sides of steel plate B-2, nut B-3-4 is tightened on anchor head special bolt B-3-1, by two groups of taperliners and guiding steel
Two sides fits closely inside and outside plate B-2, the central axis of anchor head special bolt B-3-1 and the end slope of guiding steel plate B-2；Anchor head
The axis direction of special bolt B-3-1 is provided with through grouting pipe B-3-1-3；The inner end of anchor head special bolt B-3-1 and lock
Foot anchor tube B-4 is connected；Lock foot anchor tube B-4 is installed in tunnel wall, and every group of taperliner includes wedge-shaped rubber backing plate B-3-2 peace
Billet B-3-3；Wedge-shaped rubber backing plate B-3-2 peace billet B-3-3 coaxial package is on anchor head special bolt B-3-1；It is flat
An end face of billet B-3-3 and the tapered end face paste of wedge-shaped rubber backing plate B-3-2 are closed, the other end of flat billet B-3-3
It is bonded with the end face pilot hole B-2-1 of guiding steel plate B-2；The planar end surface of wedge-shaped rubber backing plate B-3-2 is special by being connected to anchor head
It is limited and is fixed with the nut B-3-4 on bolt B -3-1；Wedge-shaped rubber backing plate B-3-2 inner face and backing plate axis tilt, outer end face
It 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 end；Nut B-3-4 and anchor head special bolt B-3-1 inner end external screw thread cooperate, and two groups of taperliners are led with guiding steel plate 2
It is located between nut B-3-4 and the hexagonal bolt head of anchor head special bolt B-3-1 to hole B-2-1；Anchor head special bolt B-3-1's
Outer end is disposed with the filling adaptor B-3-1-1 being connected to grouting pipe B-3-1-3；Fashioned iron steel arch-shelf A includes flange plate A-2 and steel
Web A-1；Guiding steel plate B-2 is welded on flange plate A-2 in advance and is arranged in parallel with tunnel wall surface；Pilot hole B-2-1 is symmetrical arranged
In on the guiding steel plate B-2 of the tunnel both sides steelframe B-1；The external screw thread and lock foot anchor tube B-4 of the inner end of anchor head special bolt B-3-1
The internal screw thread of outer end matches.One-above-the-other layout C of the invention is connect with the steel web A-1 of fashioned iron steel arch-shelf A；It is longitudinally connected
Device C is provided with externally threaded L shape reinforcing bar C-3 by one end, both ends are respectively provided with internal thread double thread sleeve C -6 and both ends
It is provided with externally threaded longitudinally connected reinforcing bar C-7 composition；One end of the undressed screw thread of L shape reinforcing bar C-3 is welded in a fashioned iron in advance
On the steel web A-1 of steel arch-shelf A, the end of thread, double thread sleeve C -6 and the longitudinally connected reinforcing bar C-7 three of L shape reinforcing bar C-3
Be threadedly coupled along the longitudinally coaxial arrangement in tunnel and mutually, the other end of longitudinally connected reinforcing bar C-7 by locking nut C-5 with it is adjacent
Fashioned iron steel arch-shelf A the A-1 connection of steel web；On the steel web A-1 for the fashioned iron steel arch-shelf A being connect with longitudinally connected reinforcing bar C-7
It is provided with slotted hole C-4.
Its installation step of the invention is as follows:
Step 1: process: in processing factory, processing guiding steel plate B-2 simultaneously reserves pilot hole B-2-1 in two sides, in
Sky lock foot anchor tube B-4 is by steelframe side head setting internal screw thread B-4-1, according to construction and step height requirement, in fashioned iron steel
Prewelding is oriented to steel plate B-2 on the flange plate A-2 of arch A, while L shape reinforcing bar C- is welded on the steel web A-1 of fashioned iron steel arch-shelf A
Slotted hole C-4 is processed on the steel web A-1 of 3 and another corresponding fashioned iron steel arch-shelf A.
Step 2: boring procedure: construction site is excavated, and after the processing of excavation face out break, applies just pneumatically placed concrete, fashioned iron steel
Arch A is in place, installs one-above-the-other layout, and installation quality after the assay was approved, utilizes the pilot hole B- reserved on guiding steel plate B-2
2-1 drills, general by setting downwards with 30-45° angle of horizontal direction degree, studies intensively depth greater than anchor tube length certain distance.
Tubulature process: step 3 after the completion of drilling, locks foot anchor tube B-4 and passes through insertion drilling from pilot hole B-2-1.
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-
3, pilot hole B-2-1, nut B-3-4 and guiding steel plate B-2 assembly clamping, then rotating special bolt head B-3-1-2 makes spiral shell
Bolt bottom is connect with the lock end foot anchor tube B-4, and then rotating nuts B-3-4 locks anchor head B-3 and steel plate B-2, finally by
The filling adaptor B-3-1-1 being arranged on anchor head special bolt B-3-1 carries out slip casting operation, is finally completed lock foot anchor tube by design position
It sets and angle positioning can guarantee that lock foot anchor tube can effectively become one with steelframe again simultaneously.
Step 5 is jetted through journey again: after completing above-mentioned operation, carrying out answering spray operation by design requirement after qualified by inspection, connect
Carry out lower circulation and excavate and supporting operation.
It should be understood that the above description is merely a specific embodiment, but protection scope of the present invention is not
Be confined to this, anyone skilled in the art within the technical scope disclosed by the invention, the variation that can be readily occurred in
Or replacement, it should be covered by the protection scope of the present invention.
Claims (7)
1. a kind of profile steel frame constructed for branch at the beginning of tunnel is exempted to weld pin-connected panel supporting construction, including along tunnel longitudinal gap cloth
The more Pin fashioned iron steel arch-shelfs (A) set, fashioned iron steel arch-shelf (A) described in every Pin are anchored at tunnel by locking foot anchor tube attachment device (B)
On wall；It is connected with each other between the adjacent fashioned iron steel arch-shelf (A) by one-above-the-other layout (C)；It is characterized by:
Lock foot anchor tube attachment device (B) includes the guiding steel plate (B-2) being fixed on the fashioned iron steel arch-shelf (A), described
Guiding steel plate (B-2) is equipped with the pilot hole (B-2-1) passed through for lock foot anchor tube (B-4)；Leading in guiding steel plate (B-2)
Anchoring connector (B-3) is installed on hole (B-2-1)；The anchoring connector (B-3) is by anchor head special bolt (B-3-1), nut
(B-3-4) it is formed 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 gasket covers on 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
(B-3-4) it is tightened on anchor head special bolt (B-3-1), two groups of taperliners and two sides inside and outside guiding steel plate (B-2) are close
Fitting, the end slope of the central axis of the anchor head special bolt (B-3-1) and guiding steel plate (B-2)；The anchor head
The axis direction of special bolt (B-3-1) is provided with through grouting pipe (B-3-1-3)；The anchor head special bolt (B-3-1)
Inner end with lock foot anchor tube (B-4) be connected；The lock foot anchor tube (B-4) is installed in tunnel wall；
The one-above-the-other layout (C) connect with the steel web (A-1) of the fashioned iron steel arch-shelf (A)；The one-above-the-other layout
(C) externally threaded L shape reinforcing bar (C-3) is provided with by one end, both ends are respectively provided with internal thread double thread sleeve (C-6) and two
End is provided with externally threaded longitudinally connected reinforcing bar (C-7) composition；One end prewelding of the undressed screw thread of the L shape reinforcing bar (C-3)
On the steel web (A-1) of a fashioned iron steel arch-shelf (A), the end of thread, the double thread of the L shape reinforcing bar (C-3)
Sleeve (C-6) and longitudinally connected reinforcing bar (C-7) three are threadedly coupled along the longitudinally coaxial arrangement in tunnel and mutually, the longitudinal direction
The other end for connecting reinforcing bar (C-7) passes through the steel web (A-1) of locking nut (C-5) and the adjacent fashioned iron steel arch-shelf (A)
Connection；It is provided on the steel web (A-1) for the fashioned iron steel arch-shelf (A) being connect with the longitudinally connected reinforcing bar (C-7) oval
Hole (C-4).
2. a kind of profile steel frame constructed for branch at the beginning of tunnel according to claim 1 is exempted to weld pin-connected panel supporting construction,
Be characterized in that: taperliner described in every group includes the peaceful billet (B-3-3) of wedge-shaped rubber backing plate (B-3-2)；The wedge shape rubber
Rubber cushion 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 flat
The tapered end face paste of one end face of billet (B-3-3) and the wedge-shaped rubber backing plate (B-3-2) is closed, the flat billet (B-
Other end 3-3) is bonded with end face pilot hole (B-2-1) of guiding steel plate (B-2)；Wedge-shaped rubber backing plate (the B-
Planar end surface 3-2) is fixed by nut (B-3-4) limit being connected on the anchor head special bolt (B-3-1).
3. a kind of profile steel frame constructed for branch at the beginning of tunnel according to claim 2 is exempted to weld pin-connected panel supporting construction,
Be characterized in that: wedge-shaped rubber backing plate (B-3-2) inner face and backing plate axis tilt, and outer end face is vertical with backing plate axis.
4. a kind of profile steel frame constructed for branch at the beginning of tunnel according to claim 1 is exempted to weld pin-connected panel supporting construction,
Be characterized in that: the anchor head special bolt (B-3-1) includes hexagonal bolt head；The hexagonal bolt head is located at anchor head special bolt
(B-3-1) outer end；The nut (B-3-4) and anchor head special bolt (B-3-1) inner end external screw thread cooperate, two groups of wedge pieces
Piece and the pilot hole (B-2-1) for being oriented to steel plate (2) are located at the hex bolts of nut (B-3-4) Yu anchor head special bolt (B-3-1)
Between head.
5. a kind of profile steel frame constructed for branch at the beginning of tunnel according to claim 1 is exempted to weld pin-connected panel supporting construction,
Be characterized in that: the outer end of the anchor head special bolt (B-3-1) is disposed with the slip casting being connected to the grouting pipe (B-3-1-3)
Connector (B-3-1-1).
6. a kind of profile steel frame constructed for branch at the beginning of tunnel according to claim 1 is exempted to weld pin-connected panel supporting construction,
Be characterized in that: guiding steel plate (B-2) be welded on the flange plate (A-2) of the fashioned iron steel arch-shelf (A) in advance and with tunnel wall surface
Parallel arrangement；The pilot hole (B-2-1) is symmetrically disposed on the guiding steel plate (B-2) of the both sides tunnel steelframe (B-1).
7. it is assembled that a kind of profile steel frame constructed for branch at the beginning of tunnel according to any claim from 1 to 6 exempts from weldering
Formula supporting construction, it is characterised in that: the external screw thread and lock foot anchor tube (B-4) of the inner end of the anchor head special bolt (B-3-1) are outside
The internal screw thread at end matches.
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| CN201611238185.5A CN106761847B (en) | 2016-12-28 | 2016-12-28 | It is a kind of at the beginning of tunnel branch construct profile steel frame exempt from weld pin-connected panel supporting construction |
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| CN201611238185.5A CN106761847B (en) | 2016-12-28 | 2016-12-28 | It is a kind of at the beginning of tunnel branch construct profile steel frame exempt from weld pin-connected panel supporting construction |
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| CN106761847B true CN106761847B (en) | 2019-02-05 |
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| CN111236984B (en) * | 2020-02-28 | 2024-07-09 | 中铁第一勘察设计院集团有限公司 | Foot locking system based on effective control of vertical displacement of primary support steel frame and construction method thereof |
| CN113202530B (en) * | 2021-06-07 | 2023-02-17 | 河南理工大学 | Shear-resistant anchor cable supporting structure and method adopted by large-deformation roadway |
| CN113441858B (en) * | 2021-07-09 | 2022-10-11 | 中国铁建重工集团股份有限公司 | Automatic sealing and mounting operation device and operation method for TBM steel arch |
| CN113756846B (en) * | 2021-09-14 | 2024-03-22 | 中铁工程装备集团有限公司 | Steel arch locking device, steel arch and steel arch assembling method |
| CN113914906A (en) * | 2021-11-11 | 2022-01-11 | 中国铁建大桥工程局集团有限公司 | Supporting structure for preventing tunnel collapse |
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