CN214660232U - Corrugated plate connecting structure for tunnel toughness support - Google Patents
Corrugated plate connecting structure for tunnel toughness support Download PDFInfo
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- CN214660232U CN214660232U CN202120578199.1U CN202120578199U CN214660232U CN 214660232 U CN214660232 U CN 214660232U CN 202120578199 U CN202120578199 U CN 202120578199U CN 214660232 U CN214660232 U CN 214660232U
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 82
- 239000010959 steel Substances 0.000 claims abstract description 82
- 238000009412 basement excavation Methods 0.000 claims abstract description 11
- 239000011435 rock Substances 0.000 claims abstract description 6
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 6
- 239000011381 foam concrete Substances 0.000 claims description 3
- 238000005187 foaming Methods 0.000 claims description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 239000010410 layer Substances 0.000 claims 3
- 239000011247 coating layer Substances 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 description 6
- 238000010276 construction Methods 0.000 description 6
- 238000009434 installation Methods 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000002265 prevention Effects 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910000851 Alloy steel Inorganic materials 0.000 description 1
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 229910000870 Weathering steel Inorganic materials 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
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- Lining And Supports For Tunnels (AREA)
Abstract
The utility model discloses a buckled plate connection structure is strutted to tunnel toughness, its characterized in that: the corrugated plate and the special-shaped channel steel are spliced to form a toughness support, two adjacent corrugated steel plates are connected together through the special-shaped channel steel, the toughness support is an arch-shaped toughness support located on the inner side of a tunnel excavation surface, and the toughness support is connected in tunnel surrounding rock through an advanced guide pipe. The toughness support is formed by splicing corrugated plates in the longitudinal direction and the circumferential direction. Be equipped with the mounting hole I that is used for being connected with heterotypic channel-section steel on the buckled plate, the mounting hole setting is in the crest and the trough department of buckled plate, is equipped with mounting hole II that corresponds with mounting hole I on the lateral wall of heterotypic channel-section steel, and the buckled plate passes through bolt and II cooperation fastening connections of mounting hole I and mounting hole and adopts the splice plate to connect on heterotypic channel-section steel, can guarantee that the ripple steel sheet atress is in the coplanar, improves toughness supporting overall structure's bearing capacity.
Description
Technical Field
The utility model belongs to the technical field of the tunnel is strutted, concretely relates to buckled plate connection structure is strutted to tunnel toughness.
Background
The railway tunnel supporting structure in China basically adopts a traditional anchor net spraying structure, the supporting structure system has more working procedures, and in some tunnels with high ground stress and large soft rock deformation, the time occupied by adopting the anchor net spraying system is longer, so that the tunnel is greatly deformed, and the tunnel safety is influenced. In addition, the anchor net spraying structure mainly adopts a profile steel arch, the longitudinal rigidity of the profile steel arch is poor, and out-of-plane instability is easy to occur, so that the instability of the anchor net spraying overall structure is caused. Based on above reason, domestic relevant mechanism has proposed to adopt the buckled plate as tunnel primary support structure, consider the construction convenience, the buckled plate that adopts mainly adopts flange joint, because the flange adopts the welding mostly, when the tunnel takes place great deformation, the fracture takes place easily in welding seam department, cause the structure to take place to destroy, in addition, the slab adopts flange disc structure back all around, if welding center asymmetry, cause off-centre easily, make the atress of buckled plate take place the fundamental change, by bearing the eccentric pressurized component that axle center pressurized component shifted originally, lead to slab connecting bolt to become the stretch bending atress by shearing atress, lead to bolt bearing capacity to descend, seriously influence the bearing capacity of buckled plate overall structure.
SUMMERY OF THE UTILITY MODEL
Not enough to exist among the prior art, the utility model aims to provide a corrugated plate connection structure is strutted to tunnel toughness of simple structure, convenient to use.
In order to achieve the above purpose, the technical scheme of the utility model is that: the utility model provides a buckled plate connection structure is strutted to tunnel toughness which characterized in that: including buckled plate and heterotypic channel-section steel, toughness support is constituteed in the concatenation of a plurality of buckled plates, links together through heterotypic channel-section steel between the two adjacent buckled plates, and toughness support is strutted for the arch toughness that is located tunnel excavation face inboard, and toughness support is strutted through leading pipe connection in tunnel country rock.
Further, toughness is strutted and is formed by the buckled plate concatenation on vertical and hoop, and the ripple direction and the tunnel cross section of buckled plate are mutually perpendicular, and the buckled plate concatenation constitutes buckled plate support ring on the hoop.
Further, a plurality of buckled plates pass through heterotypic channel-section steel and end-to-end connection in proper order constitutes buckled plate support ring, connect through the fastener between a plurality of buckled plate support rings and constitute toughness and strut, and the buckled plate is strutted the ring and is two adjacent buckled plates and be last slab and lower slab respectively.
Furthermore, the abnormal shape channel-section steel is U type structure, and the abnormal shape channel-section steel includes the last abnormal shape channel-section steel of being connected with the upper plate piece and the lower abnormal shape channel-section steel of being connected with the lower plate piece, goes up abnormal shape channel-section steel and all is equipped with the bolt hole and carries out fastening connection through the bolt down with abnormal shape channel-section steel.
Furthermore, the end part of the upper plate is inserted into the groove body of the upper special-shaped channel steel, the end part of the lower plate is inserted into the groove body of the lower special-shaped channel steel, the bottom of the upper special-shaped channel steel and the bottom of the lower special-shaped channel steel are arranged in a back-to-back mode, and a waterproof cushion pad is arranged between the bottom of the upper special-shaped channel steel and the bottom of the lower special-shaped channel steel.
Further, be equipped with the mounting hole I that is used for being connected with heterotypic channel-section steel on the buckled plate, mounting hole I sets up in the crest and the trough department of buckled plate, is equipped with mounting hole II that corresponds with mounting hole I on the lateral wall of heterotypic channel-section steel, and the buckled plate passes through bolt and mounting hole I and II cooperation fastening connections of mounting hole on heterotypic channel-section steel.
Furthermore, a nut is welded in advance at a position, corresponding to the mounting hole II, on the outer wall of the special-shaped channel steel.
Furthermore, a plurality of corrugated plate supporting rings are spliced in the longitudinal direction of the flexible supporting, adjacent corrugated plate supporting rings are connected together through a flange plate or an inner flanging and are fastened and connected through a high-strength bolt, and a waterproof pad is clamped between two corrugated plates at the connecting part of the adjacent corrugated plate supporting rings.
Further, the outside coating of buckled plate has the anticorrosive coating, and the inboard coating of buckled plate has anti-rust paint layer and fire prevention paint layer.
Furthermore, a backfill layer is poured into a gap between the tunnel excavation surface and the flexible support, and the backfill layer is made of foam concrete, common grouting material or light foaming material.
Adopt the utility model discloses technical scheme's advantage does:
the utility model discloses toughness is strutted and is adopted heterotypic channel-section steel to connect between the hoop last adjacent corrugated plate, and during installation upper portion buckled plate, in advance need to install the buckled plate with last heterotypic channel-section steel and upper portion and link together, when installation lower part buckled plate installation, also need in advance to link together heterotypic channel-section steel and lower part need to install the buckled plate, can guarantee that the buckled plate atress is in the coplanar, improves toughness and strut overall structure's bearing capacity.
Drawings
The invention will be described in further detail with reference to the following drawings and detailed description:
FIG. 1 is a schematic view of the primary support structure of the tunnel toughness of the present invention;
FIG. 2 is a schematic view of the corrugated plate and the opposite-shaped channel steel in front view;
FIG. 3 is a schematic top view of the connection between the corrugated plate and the opposite-shaped channel steel;
fig. 4 is the utility model discloses the buckled plate connects into toughness and struts the sketch map.
The labels in the above figures are respectively: 1. excavating a tunnel face; 2. carrying out toughness support; 21. a corrugated plate; 211. an upper plate sheet; 212. a lower plate; 22. special-shaped channel steel; 23. mounting special-shaped channel steel; 231. a nut; 24. a lower special-shaped channel steel; 25. a waterproof cushion pad; 26. a mounting hole I; 27. mounting holes II; 3. a lead catheter; 4. a backfill layer; 5. an upper step; 6. locking the anchor rod; 7. descending a step; 8. an inverted arch and a filling layer.
Detailed Description
In the present invention, it is to be understood that the term "length"; "Width"; "Up"; "Down"; "front"; "Back"; "left"; "Right"; "vertical"; "horizontal"; "Top"; "bottom" "inner"; "outer"; "clockwise"; "counterclockwise"; "axial"; "planar direction"; the directional or positional relationship indicated as "circumferential" or the like is based on the directional or positional relationship shown in the drawings, and is only for convenience of description and simplified description, and does not indicate or imply that the device or element referred to must have a particular orientation; constructed and operative in a particular orientation and therefore should not be construed as limiting the invention.
As shown in fig. 1 to 4, a corrugated plate connection structure is strutted to tunnel toughness, its characterized in that: including buckled plate 21 and heterotypic channel-section steel 22, toughness support 2 is constituteed in the concatenation of a plurality of buckled plates 21, links together through heterotypic channel-section steel 22 between two adjacent buckled plates 21, and toughness support 2 is for lieing in the 1 inboard arch toughness support of tunnel excavation face, and toughness support 2 connects in the tunnel country rock through leading pipe 3. Toughness is strutted 2 and is formed by the concatenation of buckled plate 21 in vertical and hoop, and the ripple direction and the tunnel cross section of buckled plate are mutually perpendicular, and the position department of connecting all around of buckled plate reserves the bolt hole that is used for the concatenation, and buckled plate 21 concatenation constitutes buckled plate support ring on the hoop.
Be equipped with the mounting hole I26 that is used for being connected with heterotypic channel-section steel 22 on the buckled plate 21, the crest and the trough department of buckled plate 21 are located to mounting hole I26, are equipped with the mounting hole II 27 that corresponds with mounting hole I26 on the lateral wall of heterotypic channel-section steel 22, and buckled plate 21 passes through bolt and mounting hole I26 and the cooperation fastening of mounting hole II 27 and connects on heterotypic channel-section steel 22. And a nut 231 is welded in advance on the outer wall of the special-shaped channel steel 22 at a position corresponding to the mounting hole II 27.
Specifically, a plurality of corrugated plates 21 are sequentially connected end to end through special-shaped channel steel 22 to form corrugated plate supporting rings, the corrugated plate supporting rings are connected through fasteners to form a toughness support 2, and two adjacent corrugated plates 21 in the corrugated plate supporting rings are respectively an upper plate piece 211 and a lower plate piece 212.
The special-shaped channel steel 22 is of a U-shaped structure, the special-shaped channel steel 22 comprises an upper special-shaped channel steel 23 connected with the upper plate piece 211 and a lower special-shaped channel steel 24 connected with the lower plate piece 212, and the upper special-shaped channel steel 23 and the lower special-shaped channel steel 24 are both provided with bolt holes and are fastened and connected through bolts.
The end part of the upper plate sheet 211 is inserted into the groove body of the upper special-shaped channel steel 23, the end part of the lower plate sheet 212 is inserted into the groove body of the lower special-shaped channel steel 24, the bottom of the upper special-shaped channel steel 23 and the bottom of the lower special-shaped channel steel 24 are arranged in a back-to-back mode, and a waterproof cushion pad 25 is arranged between the bottom of the upper special-shaped channel steel 23 and the bottom of the lower special-shaped channel steel 24.
When the device is actually used, the bottom of the upper special-shaped channel 23 is aligned with the bottom of the lower special-shaped channel 24, a waterproof cushion pad 25 is laid between the bottom of the upper special-shaped channel 23 and the bottom of the lower special-shaped channel 24, bolt holes are formed in the bottoms of the upper special-shaped channel 23 and the lower special-shaped channel 24, and the upper special-shaped channel 23 and the lower special-shaped channel 24 are connected together by penetrating high-strength bolts through the bolt holes; then, the end part of the upper plate sheet 211 is inserted into the groove body of the upper special-shaped channel steel 23, so that the mounting hole I26 on the upper plate sheet 211 corresponds to the mounting hole II 27 on the groove wall of the upper special-shaped channel steel 23 and is fastened and connected by a high-strength bolt, and the upper plate sheet 211 is connected into the upper special-shaped channel steel 23; similarly, the end of the lower plate 212 is inserted into the groove of the lower special-shaped channel 24, so that the mounting hole i 26 on the lower plate 212 corresponds to the mounting hole ii 27 on the groove wall of the lower special-shaped channel 24 and is fastened and connected by a high-strength bolt, and the lower plate 212 is connected into the lower special-shaped channel 24.
A plurality of corrugated plate supporting rings are spliced in the longitudinal direction of the flexible support 2, adjacent corrugated plate supporting rings are connected together through a flange plate or an inward flanging, fastening connection is carried out through high-strength bolts, and a waterproof pad is clamped between two corrugated plates 21 of the connecting parts of the adjacent corrugated plate supporting rings.
Specifically, the corrugated plates 21 are connected through the special-shaped channel steel 22 to form annular structures which are arranged along the annular direction of the tunnel excavation surface 1, the annular structures are spliced in the longitudinal direction of the tunnel excavation surface 1, namely the annular structures are spliced and extended inwards one by one, adjacent annular structures are connected together through flanges or inner flanges, namely the flanges or the inner flanges are arranged at two side parts of each corrugated plate 21; during construction, firstly circumferential support is carried out, and then longitudinal support is carried out.
The corrugated plate 21 is in a sine shape, a cosine shape, a trapezoid shape or a square shape, and the corrugated plate 21 is made of common carbon steel, low alloy steel, weathering steel or stainless steel. The outside coating of buckled plate 21 has the anticorrosive coating, and the inboard coating of buckled plate has anti-rust dope layer and fire prevention dope layer.
A backfill layer 4 is poured in a gap between the tunnel excavation surface 1 and the flexible support 2, and the backfill layer is made of foam concrete, common grouting material or light foaming material.
The utility model discloses toughness is strutted and is adopted heterotypic channel-section steel 23 to connect between the hoop and the last adjacent corrugated plate 21, can guarantee that the buckled plate atress is in the same face, during installation upper portion buckled plate, in advance need install the buckled plate with last heterotypic channel-section steel and upper portion and link together, during installation lower part buckled plate installation, also need in advance link together heterotypic channel-section steel and lower part need install the buckled plate.
The concrete construction process is as follows: a. constructing a small advanced duct and grouting; b. excavating surrounding rocks of the upper step 5, constructing a primary support II of the hole body structure of the upper step 5, namely installing a corrugated plate support structure, and drilling a foot locking anchor rod 6; c. After the upper step 5 is constructed to a proper distance, a lower step 7 is excavated, a primary support IV of a tunnel body structure is constructed, namely a corrugated plate support structure is installed, and a foot locking anchor rod 6 is drilled; d. after the lower step 7 is constructed to a proper distance, excavating an inverted arch and filling 8, constructing a primary support VI at the bottom of the inverted arch, namely installing a corrugated plate support structure, and pouring the VII-part inverted arch and the filling 8 in the section; and (4) pouring the secondary lining of the VIII part at one time (arch wall lining is constructed at one time) by using a lining template trolley. The foot-locking anchor rods 6 are arranged in time in the construction process, and the foot-locking anchor rods 6 must be grouted so as to ensure the stability of the steel frame foundation. The length of each step of step excavation should be between 2 ~ 3m, and 7 excavation backs of lower step arch should be followed closely. The construction process is suitable for two-step, three-step, micro-step and full-section construction.
The corrugated plate supporting structure mentioned here is the support that corrugated plate 21 forms according to the structural connection of the utility model discloses.
The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without the technical solutions of the present invention, or the present invention can be directly applied to other occasions without the improvements, and all are within the protection scope of the present invention.
Claims (10)
1. The utility model provides a buckled plate connection structure is strutted to tunnel toughness which characterized in that: including buckled plate (21) and heterotypic channel-section steel (22), toughness support (2) are constituteed in the concatenation of a plurality of buckled plates (21), link together through heterotypic channel-section steel (22) between two adjacent buckled plates (21), and toughness support (2) are strutted for being located tunnel excavation face (1) inboard arch toughness, and toughness support (2) are connected in tunnel country rock through leading pipe (3).
2. A tunnel flexible support corrugated plate connection structure as claimed in claim 1, wherein: toughness is strutted (2) and is formed by buckled plate (21) concatenation in vertical and hoop, and the ripple direction and the tunnel cross section of buckled plate are mutually perpendicular, and buckled plate (21) concatenation constitutes buckled plate support ring on the hoop.
3. A tunnel flexible support corrugated plate connection structure as claimed in claim 2, wherein: a plurality of buckled plates (21) are connected end to end in proper order through heterotypic channel-section steel (22) and are constituted buckled plate support ring, connect through the fastener between a plurality of buckled plate support rings and constitute toughness and strut (2), and two adjacent buckled plates (21) are upper plate piece (211) and lower plate piece (212) respectively in the buckled plate support ring.
4. A tunnel flexible support corrugated plate connection structure as claimed in claim 3, wherein: the special-shaped channel steel (22) is of a U-shaped structure, the special-shaped channel steel (22) comprises an upper special-shaped channel steel (23) connected with the upper plate piece (211) and a lower special-shaped channel steel (24) connected with the lower plate piece (212), and the upper special-shaped channel steel (23) and the lower special-shaped channel steel (24) are both provided with bolt holes and are fastened and connected through bolts.
5. A tunnel flexible support corrugated plate connection structure as claimed in claim 4, wherein: the end part of the upper plate sheet (211) is inserted into the groove body of the upper special-shaped channel steel (23), the end part of the lower plate sheet (212) is inserted into the groove body of the lower special-shaped channel steel (24), the bottom of the upper special-shaped channel steel (23) and the bottom of the lower special-shaped channel steel (24) are arranged in a back-to-back mode, and a waterproof cushion pad (25) is arranged between the bottom of the upper special-shaped channel steel (23) and the bottom of the lower special-shaped channel steel (24).
6. A tunnel flexible support corrugated plate connection structure as claimed in claim 4 or 5, wherein: be equipped with on buckled plate (21) and be used for the mounting hole I (26) of being connected with heterotypic channel-section steel (22), mounting hole I (26) set up the crest and the trough department at buckled plate (21), are equipped with mounting hole II (27) that correspond with mounting hole I (26) on the lateral wall of heterotypic channel-section steel (22), and buckled plate (21) are through bolt and mounting hole I (26) and mounting hole II (27) cooperation fastening connection on heterotypic channel-section steel (22).
7. A tunnel flexible support corrugated plate connection structure as claimed in claim 6, wherein: and a nut (231) is welded in advance at a position, corresponding to the mounting hole II (27), on the outer wall of the special-shaped channel steel (22).
8. A tunnel flexible support corrugated plate connection structure as claimed in claim 7, wherein: a plurality of corrugated plate supporting rings are spliced in the longitudinal direction of the flexible support (2), adjacent corrugated plate supporting rings are connected together through a flange plate or an inner flanging and are fastened and connected through a high-strength bolt, and a waterproof pad is clamped between two corrugated plates (21) at the connecting part of the adjacent corrugated plate supporting rings.
9. A tunnel flexible support corrugated plate connection structure as claimed in claim 8, wherein: the outside coating of buckled plate (21) has the anticorrosive coating, and the inboard coating of deck plate has anti-rust coating layer and fireproof paint layer.
10. A tunnel flexible support corrugated plate connection structure as claimed in claim 9, wherein: and a backfill layer (4) is poured into a gap between the tunnel excavation surface (1) and the flexible support (2), and the backfill layer is made of foam concrete, common grouting material or light foaming material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578199.1U CN214660232U (en) | 2021-03-22 | 2021-03-22 | Corrugated plate connecting structure for tunnel toughness support |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120578199.1U CN214660232U (en) | 2021-03-22 | 2021-03-22 | Corrugated plate connecting structure for tunnel toughness support |
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| CN214660232U true CN214660232U (en) | 2021-11-09 |
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| CN202120578199.1U Active CN214660232U (en) | 2021-03-22 | 2021-03-22 | Corrugated plate connecting structure for tunnel toughness support |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291603A (en) * | 2023-03-10 | 2023-06-23 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
| CN116378677A (en) * | 2023-05-29 | 2023-07-04 | 湖南省交通规划勘察设计院有限公司 | Tunnel construction method and tunnel structure of full-span filling karst cave section |
-
2021
- 2021-03-22 CN CN202120578199.1U patent/CN214660232U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116291603A (en) * | 2023-03-10 | 2023-06-23 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
| CN116291603B (en) * | 2023-03-10 | 2023-11-28 | 云南省交通规划设计研究院有限公司 | Retractable corrugated plate structure suitable for soft rock tunnel and design method |
| CN116378677A (en) * | 2023-05-29 | 2023-07-04 | 湖南省交通规划勘察设计院有限公司 | Tunnel construction method and tunnel structure of full-span filling karst cave section |
| CN116378677B (en) * | 2023-05-29 | 2023-08-29 | 湖南省交通规划勘察设计院有限公司 | Tunnel construction method and tunnel structure of full-span filling karst cave section |
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