CN109736857A - A kind of spliced steel arch-shelf and preparation method thereof - Google Patents
A kind of spliced steel arch-shelf and preparation method thereof Download PDFInfo
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- CN109736857A CN109736857A CN201910043698.8A CN201910043698A CN109736857A CN 109736857 A CN109736857 A CN 109736857A CN 201910043698 A CN201910043698 A CN 201910043698A CN 109736857 A CN109736857 A CN 109736857A
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Abstract
The present invention provides a kind of spliced steel arch-shelfs, including bow supporter, positioned at two pieces of abutment wall brackets at bow supporter both ends.Bow supporter is made of the connection of several first supports, and abutment wall bracket is made of the connection of several second supports.First support and second support include fashioned iron and junction steel plate, and junction steel plate is vertically welded in the both ends end of fashioned iron, two groups of symmetrical connecting holes are offered on junction steel plate.The fashioned iron length and width for making first support and second support are all the same, and at the center of junction steel plate, the groove for positioning and being inserted into for fashioned iron is washed in milling, and groove is identical as fashioned iron cross sectional shape and size.A kind of production method of steel arch-shelf, including steel arch-shelf design；Material prepares；Cold-bending deformation simultaneously welds；Storage.The spliced steel arch-shelf that the present invention has has the characteristics that structure is simple, is completely embedded, facilitates storage and transport, and the production method of spliced steel arch-shelf makes steel arch-shelf realize procedure operation, high yield rate.
Description
Technical field
The present invention relates to Tunnel technical fields more particularly to a kind of spliced steel arch-shelf and preparation method thereof.
Background technique
As China's road traffic construction scale constantly expands, under the background that speed is constantly promoted, Tunnel Engineering at
It needs to carry out initial stage branch to tunnel using steel arch-shelf during constructing tunnel for the highly important construction link of one of them
Shield, can ensure that the safety and stability of construction, it is therefore necessary to guarantee the intensity of steel arch-shelf in this way.
There are two types of structures for traditional steel arch-shelf tool, and one is semicircle steel arch-shelf, another kind is circular arch stalk steel arch-shelf.Circle
Arch stalk steel arch-shelf is usually to be combined by three pieces of steel bracket groups, i.e. top semi-circular shape bracket, the vertical abutment wall bracket in two sides.
Top-support is different with the specification of abutment wall bracket, it may be assumed that bending radius, length is not identical.Production when will appear fashioned iron raw material with
Mismatching phenomenon is deformed, waste of material, claim for eot, person works is measured and increases.Also it will appear the problem that length is inadequate after splicing,
The problem of supporting effect reduces.The specification difference of top-support and abutment wall bracket, the storage needed, transporting equipment are more, make work
Place land occupation is big, scene is in disorder.Semicircle steel arch-shelf is integrally formed mostly or muti-piece fashioned iron be deformed into after splice composition.
Integrally formed steel arch-shelf comparison is complicated, and it is higher to store and transport difficulty, and when splicing needs dedicated equipment conveying
And it sets up.And spliced steel arch-shelf will appear adjacent arch trestle because arch trestle radian is inadequate, verticality not enough due to caused by arch
The problem of splicing is not close, reduces supporting effect.
Moreover, tunnel support construction cycle operation is stronger, the time is saved without steel arch-shelf in traditional construction
Examination is spelled, and it is inappropriate often directly to will appear arch radian for integrated steel arch in the supporting operation that tunnel carries out steel arch-shelf
Situation needs again to set up steel arch-shelf dismounting.For spliced steel arch-shelf, often will appear deformation radian it is inadequate, steel arch-shelf branch
The unsuitable situation of steel arch-shelf height, needs steel after the case where frame junction is not close, bracket specification difference does not match, splicing
It is set up again after the disassembly of arch bracket.Make the reduction of work supporting effect, schedule delays, support cost increases.
In view of this, it is necessary to steel arch-shelf to tunnel support in the prior art and its production method improved, with
It solves the above problems.
Summary of the invention
The purpose of the present invention is to provide a kind of structures simply, splicing is convenient, the spliced steel arch convenient for storing and transporting
Frame.Simultaneously provide it is a kind of be able to achieve procedure operation, high yield rate spliced steel arch-shelf production method.
Realize the object of the invention technical solution it is as follows: a kind of spliced steel arch-shelf, including bow supporter, be located at vault branch
Two pieces of abutment wall brackets at frame both ends, bow supporter center and the line of centres at tunnel center are vertical with tunnel ground, and two pieces of sides
Wall bracket is bolted to connection between line of centres mirror symmetry, bow supporter and abutment wall bracket.If bow supporter by
A dry first support forms after bolt is fixedly connected, abutment wall bracket group after bolt is fixedly connected by several second supports
At.First support and second support include fashioned iron and junction steel plate, and the center of junction steel plate is overlapped with the center of fashioned iron end,
Junction steel plate is vertically welded in the end of fashioned iron, and two groups of symmetrical connecting holes are offered on junction steel plate.Make first support and
The fashioned iron length and width of second support are all the same.At the center of junction steel plate, milling, which is washed, positions for fashioned iron and is inserted into recessed
Slot, groove are identical as fashioned iron cross sectional shape and size.When welding, first by the groove of junction steel plate and fashioned iron end alignment, by type
Steel end is inserted into groove, then synchronizes two-sided side item welding in the junction of fashioned iron and junction steel plate.
Further, to be easily broken off after preventing junction steel plate from opening up groove or fashioned iron cannot be fully inserted into groove
Portion makes the 1/5~1/2 of the depth fashioned iron thickness of groove.
As a further improvement of the present invention, it is additionally provided with supporter in fashioned iron and junction steel plate weld, supporter is used for
Support and be bonded steel plate, the setting of supporter, the more fastening for connecting fashioned iron with connecting plate, another aspect
In steel arch supporting, steel arch-shelf is unlikely to deform, and supporting effect is more preferable.
Wherein, supporter is rectangular triangle steel plate, and a right-angle side of rectangular triangle steel plate and fashioned iron weld, another side with
Junction steel plate welding.Triangle has preferable stability, is not easy to deform in stress, triangular steel plate is welded on type
The junction of steel and junction steel plate strengthens the stability of fashioned iron and junction steel plate, when using section-steel support, splices steel arch
Fashioned iron is not easy to cause to destroy because stress is much with junction steel plate weld when frame, to influence supporting effect.
Wherein, supporter is steel bar, and steel bar one end is welded on fashioned iron, and the other end is welded on junction steel plate.Steel bar with
After fashioned iron and junction steel plate connection, triangular support can be formed, triangular support stability is good, when using section-steel support,
Fashioned iron is not easy to cause to destroy because stress is much with junction steel plate weld when splicing steel arch-shelf, to influence supporting effect.
A kind of production method of spliced steel arch-shelf: including the following steps,
Step 1: steel arch-shelf design: measurement tunnel size designs bow supporter, the abutment wall supporting structure of spliced steel arch-shelf；If
Count the size and deformation radian of first support and second support；
Step 2: material prepare: fashioned iron raw material is cut into the size of design, with forming mill cold-bending deformation make first support and
The fashioned iron of second support；Junction steel plate plate is cut into the size of design, and makes groove and connecting hole on junction steel plate；
Step 3: it assists transporting on track in forming mill that first support is made in the both ends of junction steel plate vertical welding to fashioned iron
And second support；
Step 4: it is spare that first support and second support are placed into bracket storage region.
It further, further include being welded in the junction steel plate of first support and second support and deformation junction in step 3
Connect supporter.
Further, further include step 5, first support and second support are tried to spell in the area Shi Pin, remove underproof the
One bracket or second support.
Compared with prior art, the invention has the advantage that:
1. it is identical as the fashioned iron specification of second support to make first support, the works such as cutting, cold-bending deformation, transport, storage of fashioned iron
Sequence can realize orderly management.
2. spliced steel arch-shelf is made by being welded to connect steel plate after several fashioned iron cold-bending deformations, structure is simple, convenient for fortune
Send the erection with steel arch-shelf.
3. first support and second support are tried to spell before steel arch-shelf erection, in the area Shi Pin, underproof steel arch-shelf is removed,
It prevents from occurring steel arch-shelf connection when setting up not close and reduce supporting effect.
4. junction steel plate center milling washed groove identical with fashioned iron cross sectional shape and size so that fashioned iron with
When junction steel plate is welded and fixed, junction steel plate can be accurately fixed to the center of fashioned iron, reduce first support or the
The inferior rate of two bracket finished products.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the spliced steel arch-shelf embodiment 1 ~ 2 of the present invention；
Fig. 2 is the structural schematic diagram of the spliced steel arch-shelf embodiment 3 of the present invention；
Fig. 3 is the structural schematic diagram of junction steel plate in the present invention.
Specific embodiment
Invention is described in detail in each embodiment shown in reference to the accompanying drawing, but it should be stated that, these realities
The mode of applying not is limitation of the present invention, those of ordinary skill in the art according to these embodiments made by function, method or
Equivalent transformation or substitution in person's structure, all belong to the scope of protection of the present invention within.
In the description of the present embodiment, it is to be understood that term " center ", " longitudinal direction ", " transverse direction ", "upper", "lower",
The orientation or positional relationship of the instructions such as "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outside" is
It is based on the orientation or positional relationship shown in the drawings, is merely for convenience of description the invention and simplifies description, rather than indicate
Or imply that signified device or element must have a particular orientation, be constructed and operated in a specific orientation, therefore cannot understand
For the limitation to the invention.
In addition, term " first ", " second ", " third " etc. are used for description purposes only, it is not understood to indicate or imply
Relative importance or the quantity for implicitly indicating indicated technical characteristic.The feature of " first ", " second " etc. is defined as a result,
It can explicitly or implicitly include one or more of the features.In the description of the invention, unless otherwise indicated,
The meaning of " plurality " is two or more.
Term " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, be also possible to removable
Connection is unloaded, or is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, it can also be in
Between medium be indirectly connected, can be the connection inside two elements.For the ordinary skill in the art, can pass through
Concrete condition understands concrete meaning of the above-mentioned term in the invention.
A kind of spliced steel arch-shelf:
It please join shown in Fig. 1 ~ 3,
Embodiment 1:
Refering to Figure 1, a kind of spliced semicircle steel arch-shelf, the abutment wall bracket 2 of bow supporter 1 and 2 piece mirror symmetry, arch
Ceiling hold center 1 and the line of centres at tunnel center are vertical with tunnel ground, pass through spiral shell between bow supporter 1 and abutment wall bracket 2
Bolt is fixedly connected.
First support is identical with the length of second support, and deformation radian is identical, including fashioned iron and junction steel plate 6 form, even
The center for connecing steel plate 6 is overlapped with the center of fashioned iron end, and fashioned iron is preferably I-steel, and connection 6 plate of steel is vertically welded in I-steel
End, offer two groups of symmetrical connecting holes 8 on junction steel plate 6, there are two every group of connecting holes 8.
First support and second support are shared 9 a, including 1 first support is bow supporter 1, by 4 second supports
It is bolted to connection the abutment wall bracket 2 of composition, the deformation radian of first support and second support is 20 °.
At the center of junction steel plate 6, the groove 7 for positioning and being inserted into for I-steel, groove 7 and I-steel section are washed in milling
Form and dimension is identical, and the depth of groove 7 is the 1/2 of the thickness of junction steel plate 6.Make I-steel end is accurate poorly to weld
It connects in the center of junction steel plate 6, and guarantees the verticality of junction steel plate 6 and I-steel weld.
Embodiment 2:
Refering to Figure 1, a kind of spliced semicircle steel arch-shelf, the abutment wall bracket 2 of bow supporter 1 and 2 piece mirror symmetry, arch
Ceiling hold center 1 and the line of centres at tunnel center are vertical with tunnel ground, pass through spiral shell between bow supporter 1 and abutment wall bracket 2
Bolt is fixedly connected.
First support is identical with the length of second support, and deformation radian is identical, including fashioned iron and junction steel plate 6 form, even
The center for connecing steel plate 6 is overlapped with the center of fashioned iron end, and junction steel plate 6 is vertically welded in the end of fashioned iron, is opened on junction steel plate 6
Equipped with two groups of symmetrical connecting holes 8, there are two every group of connecting holes 8.
First support and second support share 12, are composed of a fixed connection including 2 first supports by high-strength bolt
Bow supporter 1, the abutment wall bracket 2 being composed of a fixed connection by 5 second supports by high-strength bolt, first support and second support
Deformation radian be 15 °.
At the center of junction steel plate, the groove 7 for positioning and being inserted into for fashioned iron is washed in milling, groove 7 and fashioned iron cross sectional shape and
Size is identical, and the depth of groove 7 is the 2/5 of the thickness of junction steel plate 6.Make fashioned iron end is accurate to be poorly welded on connection
The center of steel plate 6, and guarantee the verticality of junction steel plate 6 and fashioned iron weld.
The supporter of rectangular triangle steel plate, the support of rectangular triangle steel plate are additionally provided in fashioned iron and 6 weld of junction steel plate
Body is used to support and is bonded steel plate 6, and a right-angle side and fashioned iron for rectangular triangle steel plate welds, another side and junction steel plate
6 welding.Triangle has preferable stability, is not easy to deform in stress, triangular steel plate is welded on fashioned iron and company
The junction for connecing steel plate 6 strengthens the stability of fashioned iron Yu junction steel plate 6, when using section-steel support, when splicing steel arch-shelf
Fashioned iron is not easy to cause to destroy because stress is much with 6 weld of junction steel plate, to influence supporting effect.
Embodiment 3:
It please refers to shown in Fig. 2, a kind of spliced circular arch stalk steel arch-shelf, bow supporter 1 is semicircle arch, 2 pieces of abutment wall brackets 2
For vertical arch, bow supporter center 1 and the line of centres at tunnel center are vertical with tunnel ground, bow supporter 1 and abutment wall branch
It is bolted to connection between frame 2.
Bow supporter 1 is bolted to connection by 5 first supports and is formed, and the deformation radian of first support is 36 °, side
Wall arch 2 is bolted to connection by 8 second supports and is formed, and second support is indeformable.First support and second support
The length of fashioned iron is same or different.
First support and second support are made of fashioned iron and junction steel plate 6, the center and 3 end of fashioned iron of junction steel plate 6
The center in portion is overlapped, and junction steel plate 6 is vertically welded in the end of fashioned iron, two groups of symmetrical connecting holes are offered on junction steel plate 6,
Every group of connecting hole 8 has 3.
At the center of junction steel plate 6, the groove 8 for positioning and being inserted into for fashioned iron, groove 8 and fashioned iron cross sectional shape are washed in milling
And size is identical, and the depth of groove 8 is the 3/10 of the thickness of junction steel plate 6.Make fashioned iron end is accurate to be poorly welded on
The center of junction steel plate 6, and guarantee the verticality of junction steel plate 6 and fashioned iron weld.
It is additionally provided with the supporter of steel bar in fashioned iron and 6 weld of junction steel plate, steel bar one end is welded on fashioned iron, the other end
It is welded on junction steel plate 6.After steel bar is connect with fashioned iron and junction steel plate 6, triangular support can be formed, triangular support is stablized
Property it is good, when using section-steel support, steel arch-shelf fashioned iron and 6 weld of junction steel plate of splicing are not easy to cause because stress is much
It destroys, to influence supporting effect.
Spliced semicircle steel arch stand manufacturing method 1:
The production method of the spliced semicircle steel arch-shelf of Examples 1 to 2:
Firstly, steel arch-shelf designs: measurement tunnel size designs bow supporter, the abutment wall supporting structure of spliced steel arch-shelf, designs
The size and deformation radian of first support and second support；
Secondly, material prepares: fashioned iron raw material being cut into the size of needs, makes first support and the with forming mill cold-bending deformation
Junction steel plate plate is cut into the size of needs by the fashioned iron of two brackets, and groove and connecting hole are made on junction steel plate；
Again, forming mill assist transport track on by junction steel plate vertical welding to fashioned iron both ends, then fashioned iron with connect steel
Plate weld welds the supporter of straight triangular form, and first support and second support is made；
Finally, it is spare that first support and second support are placed into bracket storage region.
Spliced circular arch stalk steel arch stand manufacturing method 2:
The production method of the spliced circular arch stalk steel arch-shelf of embodiment 3:
Firstly, steel arch-shelf designs: measurement tunnel size designs bow supporter, the abutment wall supporting structure of spliced steel arch-shelf, designs
First support deforms radian, designs the size of second support, the deformation radian of second support is zero；
Secondly, material prepares: fashioned iron raw material being cut into the size of needs, adjusts forming mill according to the deformation radian of first support
Parameter, with forming mill cold-bending deformation production first support fashioned iron；The deformation radian of forming mill is adjusted to zero, uses forming mill
Junction steel plate plate, is cut into the size of needs by the fashioned iron for making second support, and groove and company are made on junction steel plate
Connect hole；
Again, forming mill assist transport track on by junction steel plate vertical welding to fashioned iron both ends, then fashioned iron with connect steel
Plate weld welds the supporter of straight triangular form, and first support and second support is made；
Finally, it is spare that first support and second support are placed into bracket storage region.
The examination of spliced steel arch-shelf is spelled:
The spliced steel arch-shelf of embodiment 1 ~ 3, before for tunnel support, the also area Xu Shipin carries out examination spelling, is not conformed to removal
The first support or second support of lattice, examination splicing method are as follows:
1. it is in place to connect tool used in high-strength bolt required for first support or second support and examination spelling, place
Job platform.
2. releasing steel arch-shelf examination according to Design Requirement Drawing according to the size of 1:1 in the area Shi Pin and spelling full-page proof
3. required first support or second support in examination spelling are numbered one by one according to the dividing elements in design drawing.
4. first support or second support after the completion of number in a certain order, are sequentially placed operation platform, place
Sequentially are as follows: first place bow supporter, play arch positioning action, then gradually symmetrically placed abutment wall arch.
5. the first support placed on job platform or second support are gradually fixedly connected with high-strength bolt.
6. checking the junction steel plate piece of steel arch-shelf, being bolted gap, junction steel plate and first support or second support
Welding quality, plane warping degree, steel arch-shelf entirety radian and verticality.Remove underproof first support or second support.
7. completing assembled.
Spliced section-steel support:
The tunnel supporting method of the spliced steel arch-shelf of the present embodiment 1 ~ 3 is:
Firstly, tunnel excavation tunnel, both sides abutment wall divides left and right side to be staggered excavation；
Secondly, section-steel support, now installs bow supporter, abutment wall bracket, adjacent first support are being connected along bow supporter both ends
Between, between first support and second support, be all made of high-strength bolt between adjacent second support will be by mutual corresponding company
Hole is connect to connect；Upper padding plate and sand bedding course are padded at arch springing according to excavation method, when installation and is locked with lock foot anchoring stock, is convenient for
Installation and excavation lower part；
Again, mounted steel arch-shelf is connected with longitudinally connected muscle, the tail portion of anchor pole is welded in by the assistant reinforcement of supporting
On steel arch-shelf；Lock foot anchoring stock is accomplished fluently at arch springing in mounted steel arch-shelf, every side arch springing at least 4.(anchor pole model and length
Construct by design drawing) it is adjacent to as far as possible between steel arch-shelf and first spray concrete；
Finally, injection fixation is carried out to supporting good steel arch-shelf concrete etc., especially when backbreaking excessive or Lack of support
Basis is reinforced using jetting cement or Cast-in-place concrete.When concrete ejection is fixed, in strict accordance with vault after first abutment wall, what is got on, get off is suitable
Sequence carry out, with reduce concrete due to gravity caused by sliding or obscission occur.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically
Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention
Or change should all be included in the protection scope of the present invention.
It is obvious to a person skilled in the art that invention is not limited to the details of the above exemplary embodiments, Er Qie
In the case where without departing substantially from spirit or essential attributes of the invention, the present invention can be realized in other specific forms.Therefore, no matter
From the point of view of which point, the present embodiments are to be considered as illustrative and not restrictive, and the scope of the present invention is by appended power
Benefit requires rather than above description limits, it is intended that all by what is fallen within the meaning and scope of the equivalent elements of the claims
Variation is included within the present invention.Any reference signs in the claims should not be construed as limiting the involved claims.
In addition, it should be understood that although this specification is described in terms of embodiments, but not each embodiment is only wrapped
Containing an independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should
It considers the specification as a whole, the technical solutions in the various embodiments may also be suitably combined, forms those skilled in the art
The other embodiments being understood that.
Claims (8)
1. a kind of spliced steel arch-shelf, including bow supporter (1), positioned at the abutment wall bracket (2) at bow supporter (1) both ends, vault
Bracket (1) center and the line of centres at tunnel center are vertical with tunnel ground, and abutment wall bracket (2) is along line of centres mirror image pair
Claim, be bolted to connection between bow supporter (1) and abutment wall bracket (2), it is characterised in that: the bow supporter (1) by
Several first supports form after bolt is fixedly connected, and the abutment wall bracket (2) is fixed by several second supports through bolt
It is formed after connection；
The first support and the second support include fashioned iron and junction steel plate (6), the center of junction steel plate (6) and fashioned iron
The center of end is overlapped, and junction steel plate (6) is vertically welded in the end of fashioned iron, and offered on junction steel plate (6) two groups it is symmetrical
Connecting hole (8)；
The fashioned iron length and width for making the first support and the second support are all the same；
At the center of the junction steel plate (6), the groove (7) for positioning and being inserted into for fashioned iron, the groove (7) and institute are washed in milling
It states fashioned iron cross sectional shape and size is identical.
2. a kind of spliced steel arch-shelf according to claim 1, it is characterised in that: the depth of the groove (7) is fashioned iron
The 1/5~1/2 of thickness.
3. a kind of spliced steel arch-shelf according to claim 2, it is characterised in that: in the fashioned iron and the junction steel plate
(6) weld is additionally provided with supporter, and the supporter is used to support and consolidates the junction steel plate (6).
4. a kind of spliced steel arch-shelf according to claim 3, it is characterised in that: the supporter is rectangular triangle steel
Plate, a right-angle side and the fashioned iron for the rectangular triangle steel plate weld, and another side and the junction steel plate (6) are welded.
5. a kind of spliced steel arch-shelf according to claim 3, it is characterised in that: the supporter is steel bar, the steel
One end is welded on the fashioned iron, and the other end is welded on the junction steel plate (6).
6. a kind of method for making spliced steel arch-shelf, it is characterised in that: include the following steps,
Step 1: steel arch-shelf design: measurement tunnel size designs bow supporter (1), the abutment wall bracket (2) of spliced steel arch-shelf
Structure；Design the size and deformation radian of first support and second support；
Step 2: material prepare: fashioned iron raw material is cut into the size of design, with forming mill cold-bending deformation make first support and
The fashioned iron of second support；Junction steel plate (6) plate is cut into the size of design, and makes groove (7) on junction steel plate (6)
And connecting hole (8)；
Step 3: it assists transporting on track in forming mill that junction steel plate (6) vertical welding to the both ends of fashioned iron is made first
Frame and second support；
Step 4: it is spare that first support and second support are placed into bracket storage region.
7. a kind of method for making spliced steel arch-shelf according to claim 6, it is characterised in that: in the step 3,
It further include in the junction steel plate (6) of first support and second support and deformation junction welding supporter.
8. a kind of method for making spliced steel arch-shelf according to claim 6, it is characterised in that: it further include step 5,
First support and second support are tried to spell in the area Shi Pin, remove underproof first support or second support.
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| CN113503173A (en) * | 2021-07-12 | 2021-10-15 | 内蒙古工业大学 | Mine roadway support steel arch frame and mounting method thereof |
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Application publication date: 20190510 |