CN115217498A - Foldable support of strutting of quick installation - Google Patents
Foldable support of strutting of quick installation Download PDFInfo
- Publication number
- CN115217498A CN115217498A CN202210910585.5A CN202210910585A CN115217498A CN 115217498 A CN115217498 A CN 115217498A CN 202210910585 A CN202210910585 A CN 202210910585A CN 115217498 A CN115217498 A CN 115217498A
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- Prior art keywords
- steel
- steel arch
- arch
- shaped
- quick
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- 238000009434 installation Methods 0.000 title claims description 11
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 184
- 239000010959 steel Substances 0.000 claims abstract description 184
- 238000010276 construction Methods 0.000 claims abstract description 15
- 230000003014 reinforcing effect Effects 0.000 claims description 11
- 239000003381 stabilizer Substances 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 9
- 238000004064 recycling Methods 0.000 claims description 3
- 238000000034 method Methods 0.000 description 7
- 239000011435 rock Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 4
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 238000009412 basement excavation Methods 0.000 description 3
- 230000000712 assembly Effects 0.000 description 1
- 238000000429 assembly Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000034994 death Effects 0.000 description 1
- 231100000517 death Toxicity 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000013049 sediment Substances 0.000 description 1
Images
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
- E21D11/24—Knuckle joints or links between arch members
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural 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 quickly-installed foldable support bracket which comprises a steel arch unit formed by combining at least two foldable steel arches, wherein each foldable steel arch comprises at least three steel arch sections, the butt joints of the steel arch sections are hinged together through a connecting piece, the front and the back of each steel arch of the same group of steel arch units are distributed at intervals, each group of steel arch units are pre-assembled outside a construction site, each connecting piece comprises two I-shaped steel clamping pieces with hinged ends, two support lugs are arranged on the opposite sides of the other ends of the two I-shaped steel clamping pieces at intervals from front to back to form U-shaped clamps clamped on I-shaped steel of the steel arch sections, the two support lugs are respectively positioned on the two sides of an I-shaped steel wing plate, and each I-shaped steel clamping piece is provided with a plurality of locking bolts corresponding to steel. Folding transportation, expand during the construction can, can also avoid high altitude construction as far as possible, improve work efficiency.
Description
Technical Field
The invention relates to the technical field of connecting assemblies, in particular to a quickly-installed folding type supporting bracket.
Background
The steel arch is one of the most important supporting members for excavating the tunnel in unfavorable geology, and the installation speed and the quality of the steel arch play an important role in the stability of the tunnel and the personal safety of constructors. Because in the installation of steel bow member, the tunnel can only rely on the internal effort of country rock basically to remain stable to because installer is close to the excavation face, this is extremely dangerous in the tunnel that the stability is relatively poor, very easily takes place the collapse and causes the injures and deaths of installer. Meanwhile, the steel arch frames are installed manually in sections, the construction speed is low, the time of tunnel construction operation is long, and the erection quality is also problematic.
The existing folding steel arch frame solves the technical problems of low construction speed and long tunnel construction operation time occupation. However, when the existing folding steel arch is built, a multi-arm trolley is required to be used for unfolding the folding steel arch. Because the tunnel inner space is limited, in the tunnel of less cross section, multi-arm platform truck is difficult to expand, simultaneously, adopts multi-arm platform truck to expand foldable steel bow member, influences the front end excavation easily, and the sediment car of influence passes through, leads to transporting out the earth that the front end excavation produced, influences the construction progress.
In addition, when the steel arch frames are built, the steel arch frames need to be fixed, the steel arch frames which are distributed at intervals are welded together at high altitude manually, and the steel arch frames are small in distance from surrounding rocks of the tunnel, so that the operation difficulty is high, and potential safety hazards exist in high-altitude operation.
Disclosure of Invention
The invention aims to solve the technical problems in the prior art, and particularly provides a quickly-installed folding type supporting bracket which can be used for connecting a plurality of steel arches in sequence to form a whole in advance, can be folded for transportation, can be unfolded during construction, can avoid high-altitude operation as much as possible, and improves the working efficiency.
In order to achieve the purpose, the invention provides a folding type supporting bracket capable of being installed quickly, which comprises a steel arch unit formed by combining at least two folding type steel arches, wherein each folding type steel arch comprises at least three steel arch sections, the butt joints of the steel arch sections are hinged together through connecting pieces, and the connecting pieces are detachably fixed on the steel arch sections; each steel arch of the same group of steel arch units is distributed at intervals from front to back, and the corresponding front and back steel arch sections are fixed together through reinforcing steel bars, so that the steel arch units are also foldable, each group of steel arch units are pre-assembled outside a construction site, and after the steel arch units are built, connecting pieces on each steel arch can be taken down for recycling;
the connecting piece includes two I-steel fastener that the tip is articulated together, and two I-steel fastener other ends are all provided with two lugs around the interval on one side of carrying on the back mutually, form the U type checkpost of card on steel arch frame section I-steel, and two the lug is located the both sides of I-steel pterygoid lamina respectively, every the I-steel fastener corresponds the I-steel and all is equipped with a plurality of locking bolts, after locking bolt passed the lug of one side in proper order, the web and the opposite side lug of I-steel, installs fixedly through lock nut.
In the scheme, the method comprises the following steps: two I-steel fastener articulated one end all is equipped with the stabilizer blade that two intervals set up around, is connected with the reinforcing plate between two stabilizer blades, avoids stabilizer blade on the same I-steel fastener to take place deformation, ensures product structural stability.
In the scheme, the method comprises the following steps: the distance between the two support legs of one I-shaped steel clamping piece is smaller than the distance between the two support legs of the other I-shaped steel clamping piece, so that the two support legs of the I-shaped steel clamping piece are positioned between the two support legs of the other I-shaped steel clamping piece, the space is saved, the two I-shaped steel clamping pieces can be conveniently folded, and the opening and closing range between the two I-shaped steel clamping pieces is enlarged.
In the scheme, the method comprises the following steps: the bottom of stabilizer blade all buckles to the one side that two I-steel fasteners drawn close each other, can give way for the connecting plate of I-steel tip, sets up rationally.
In the scheme, the method comprises the following steps: lightening holes are formed in the I-shaped steel clamping piece and the reinforcing plate, so that the weight is lightened as much as possible, and the I-shaped steel clamping piece and the reinforcing plate are convenient to transport and carry.
In the scheme, the method comprises the following steps: the reinforcing steel bar is fixed on the outer side of the steel arch frame section.
In the scheme, the method comprises the following steps: the number of the steel arches of each group of steel arch unit is 2-5.
In the scheme, the method comprises the following steps: the reinforcing bar is netted, improves connection stability.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that: only two adjacent steel arch sections need to be aligned in advance, the I-shaped steel clamping piece is clamped on the I-shaped steel of the steel arch sections, the locking bolt penetrates through a web of the I-shaped steel to prevent sliding, connection is more stable, and therefore hinged fixing of a single steel arch is achieved. Because the two I-steel clamping pieces are hinged, two adjacent steel arch frame sections can be folded, so that the transportation and the carrying are convenient, the front and the back corresponding steel arch frame sections are fixed together through the steel bars, the folding characteristics of the steel arch frames are also reserved, the steel arch frame units can be folded, and the steel arch frame units can be unfolded after arriving at the site without secondary positioning. The assembly is convenient and quick, the installation time is saved, the assembly working efficiency is improved, and a plurality of steel arches are installed at one time, so that the time is saved, and the efficiency is high. A plurality of steel arches are fixed together in advance through reinforcing steel bars, high-altitude welding is not needed, construction safety is improved, welding precision can be guaranteed, and the inconvenience of operation caused by too small gap between the steel arch and surrounding rocks after installation is avoided; the locking bolt that sets up can demountable installation on the steel bow member section to reuse, save material, installation, dismantlement are simple convenient simultaneously.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view of the connection of the connector of the present invention to a steel arch segment.
Fig. 2 is a schematic view of the structure of the connector of the present invention.
Fig. 3 is a schematic view of the unfolding of the folding steel arch of the present invention.
Fig. 4 is a side view of the steel arch unit of the present invention.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the accompanying drawings are illustrative only for the purpose of explaining the present invention, and are not to be construed as limiting the present invention.
As shown in fig. 1-4, a folding support bracket capable of being quickly installed comprises a steel arch unit formed by combining at least two folding steel arches, preferably folding steel arches, which is convenient to transport and reduces weight. Three per folding steel arch frames comprise at least three steel arch frame sections. The mesh steel arch sections are connected in a staggered manner, the butt joint positions of the mesh steel arch sections are hinged together through connecting pieces, and the mesh connecting pieces are detachably fixed on the steel arch sections in a staggered manner. Each steel arch of the same group of steel arch units is distributed at intervals from front to back, and the front and back corresponding steel arch sections are fixed together through steel bars d, so that the steel arch units are also foldable. Preferably, the criss-cross lap joint forms criss-cross lap joint of net piece reinforcing bars, forms net piece, improves connection stability, and wherein the both ends of the reinforcing bar that extend along tunnel country rock circumference all extend outside the marginal reinforcing bar that extends around to form lap joint e. Preferably, in the steel arch unit of the same group, the lap joints e of the adjacent net sheets are arranged correspondingly to each other, so that when the steel arch unit is unfolded, the lap joints e are opposite, the butt joints e can be welded together, the steel bars extending along the circumferential direction of the tunnel surrounding rock are connected into a whole, the supporting strength of the butt joint of the steel arch sections is improved, and the supporting stability of the circumferential direction of the surrounding rock is improved. In order to avoid the steel arch unit from being affected when folded or unfolded, preferably, a space is left between the lap joints e of the adjacent net sheets when the steel arch unit is unfolded, and when the subsequent lap joints e are butted, a small section of repair steel bar is welded to form a whole. After the steel arch frame is built, only welding lap joint e is needed, the middle of a steel bar which is vertically and horizontally staggered is not needed to be welded, the working strength of field welding is reduced, high-altitude operation is avoided as much as possible, the construction time in a tunnel is shortened, and the construction efficiency is improved.
And after the steel arch units are built, the connecting piece on each steel arch is taken down for recycling.
The connecting piece comprises two I-steel clamping pieces a, the end parts of the two I-steel clamping pieces a are hinged together, and two support lugs 1 are arranged on one sides of the other ends of the two I-steel clamping pieces a, which are back to back, at intervals, so that a U-shaped clamp clamped on an I-steel b of the steel arch frame section is formed. The two support lugs 1 are respectively positioned on two sides of a wing plate of the I-steel b, and each I-steel clamping piece a is provided with a plurality of locking bolts 5 corresponding to the I-steel b. All be equipped with the hole that supplies locking bolt 5 to pass on the web of two lugs 1 and I-steel b, behind locking bolt 5 passed lug 1, the web of I-steel b and the opposite side lug 1 of one side in proper order, install fixedly through lock nut, be difficult for droing, improve installation stability. In order to improve the connection stability, preferably, the number of the locking bolts 5 on each i-steel clamping piece a is two, so that the number of the locking bolts 5 is increased, and the stable connection between the i-steel clamping piece a and the i-steel b is ensured.
Wherein, two stabilizer blades 2 that the interval set up around all being equipped with in the articulated one end of two I-steel fastener a, articulate through stabilizer blade 2 and be in the same place. Be connected with reinforcing plate 3 between two stabilizer blades 2, avoid stabilizer blade 2 on the same I-steel fastener a to take place deformation, guarantee product structural stability.
Preferably, the distance between the two support legs 2 of one I-steel clamping piece a is smaller than the distance between the two support legs 2 of the other I-steel clamping piece a, so that the two support legs 2 of the I-steel clamping piece a are positioned between the two support legs 2 of the other I-steel clamping piece a, the space is saved, the two I-steel clamping pieces a can be conveniently folded, and the opening and closing range between the two I-steel clamping pieces a is enlarged.
Preferably, the bottom ends of the support legs 2 are bent towards the side where the two I-steel clamping pieces a are close to each other, and can give way for the connecting plate c at the end part of the I-steel b, and the arrangement is reasonable.
Preferably, a plurality of lightening holes 4 are formed in the I-shaped steel clamping piece a and the reinforcing plate 3, so that the weight is lightened as much as possible, and the transportation and the carrying are facilitated.
Preferably, the I-steel clamping piece a is positioned on the inner side of the arc of the steel arch section, so that the folding space of the steel arch is saved, and the transportation efficiency is improved.
When the steel arch centering device is used, all the steel arch centering sections are placed together in sequence, and the connecting plates c of the two adjacent steel arch centering sections are aligned. And (3) unfolding the two I-steel clamping pieces a, respectively clamping the two I-steel clamping pieces a on the two I-steel b from the inner sides of the steel arch frame sections, aligning the hinged parts of the I-steel clamping pieces a with the splicing parts of the two connecting plates c, and positioning. After positioning is finished, the web plate of the I-steel b is abutted through the locking bolt 5, so that the installation of the I-steel clamping piece a is completed, and two adjacent steel arch frame sections can be folded together for transportation and carrying. And after the steel arch truss section arrives at a construction site, the steel arch truss section is unfolded through the lifting trolley, and the adjacent connecting plates c are connected together. And after the connection is finished, the I-shaped steel clamping piece a is detached.
Claims (8)
1. The utility model provides a foldable support of quick installation which characterized in that: the foldable steel arch support comprises a steel arch support unit formed by combining at least two foldable steel arch supports, wherein each foldable steel arch support comprises at least three steel arch support sections, the butt joint parts of the steel arch support sections are hinged together through connecting pieces, and the connecting pieces are detachably fixed on the steel arch support sections; each steel arch of the same group of steel arch units is distributed at intervals from front to back, and the front and back corresponding steel arch sections are fixed together through steel bars (d), so that the steel arch units are also foldable, each group of steel arch units are pre-assembled outside a construction site, and after the steel arch units are built, connecting pieces on each steel arch can be taken down for recycling;
the connecting piece includes that tip articulated two I-steel fastener (a) together, and two I-steel fastener (a) other end are all provided with two journal stirrup (1) around the interval on the back of the body one side of carrying on the back mutually, form the U type checkpost of card on steel arch center section I-steel (b), and two journal stirrup (1) are located the both sides of I-steel (b) pterygoid lamina respectively, every I-steel fastener (a) correspond I-steel (b) and all are equipped with a plurality of locking bolt (5), behind journal stirrup (1) of one side, the web of I-steel (b) and opposite side journal stirrup (1), locking bolt (5) pass in proper order, install fixedly through lock nut.
2. A quick-install, folding support bracket according to claim 1, characterised in that: two I-steel fastener (a) articulated one end all is equipped with stabilizer blade (2) that two intervals set up around, is connected with reinforcing plate (3) between two stabilizer blade (2).
3. A quick-install, folding support bracket according to claim 2, characterised in that: the distance between the two support legs (2) of one I-shaped steel clamping piece (a) is smaller than the distance between the two support legs (2) of the other I-shaped steel clamping piece (a), so that the two support legs (2) of the I-shaped steel clamping piece (a) are positioned between the two support legs (2) of the other I-shaped steel clamping piece (a).
4. The quick-install, folding support bracket of claim 2, wherein: the bottom ends of the supporting legs (2) are bent towards one side where the two I-shaped steel clamping pieces (a) are close to each other.
5. A quick-install, folding support bracket according to claim 2, characterised in that: lightening holes (4) are formed in the I-shaped steel clamping piece (a) and the reinforcing plate (3).
6. A quick-install, folding support bracket according to claim 1, characterised in that: and the steel bar (d) is fixed on the outer side of the steel arch frame section.
7. A quick-install, folding support bracket according to claim 1, characterised in that: the number of the steel arches of each group of steel arch unit is 2-5.
8. A quick-install, folding support bracket according to claim 1, characterised in that: the steel bars (d) are net-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910585.5A CN115217498A (en) | 2022-07-29 | 2022-07-29 | Foldable support of strutting of quick installation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210910585.5A CN115217498A (en) | 2022-07-29 | 2022-07-29 | Foldable support of strutting of quick installation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115217498A true CN115217498A (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210910585.5A Pending CN115217498A (en) | 2022-07-29 | 2022-07-29 | Foldable support of strutting of quick installation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115217498A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117685016A (en) * | 2024-02-02 | 2024-03-12 | 石家庄铁道大学 | Unmanned vertical arch and longitudinal connection integrated construction method |
| CN117685016B (en) * | 2024-02-02 | 2024-05-31 | 中铁十五局集团有限公司 | Unmanned vertical arch and longitudinal connection integrated construction method |
-
2022
- 2022-07-29 CN CN202210910585.5A patent/CN115217498A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117685016A (en) * | 2024-02-02 | 2024-03-12 | 石家庄铁道大学 | Unmanned vertical arch and longitudinal connection integrated construction method |
| CN117685016B (en) * | 2024-02-02 | 2024-05-31 | 中铁十五局集团有限公司 | Unmanned vertical arch and longitudinal connection integrated construction method |
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