CN113309550A - Novel modular temporary support assembly structure for ultra-large section loess tunnel - Google Patents
Novel modular temporary support assembly structure for ultra-large section loess tunnel Download PDFInfo
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- CN113309550A CN113309550A CN202110544008.4A CN202110544008A CN113309550A CN 113309550 A CN113309550 A CN 113309550A CN 202110544008 A CN202110544008 A CN 202110544008A CN 113309550 A CN113309550 A CN 113309550A
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- steel plate
- support
- door panel
- vertical
- loess tunnel
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- 229910000831 Steel Inorganic materials 0.000 claims abstract description 85
- 239000010959 steel Substances 0.000 claims abstract description 85
- 238000003466 welding Methods 0.000 claims description 14
- 238000010276 construction Methods 0.000 abstract description 8
- 239000000463 material Substances 0.000 abstract description 8
- 239000011435 rock Substances 0.000 description 5
- 238000004064 recycling Methods 0.000 description 3
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000005493 welding type Methods 0.000 description 1
Images
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D19/00—Provisional protective covers for working space
- E21D19/04—Provisional protective covers for working space for use in drifting galleries
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- E—FIXED CONSTRUCTIONS
- E21—EARTH 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The invention relates to the technical field of tunnel construction support, in particular to a novel modular temporary support assembly structure of an ultra-large section loess tunnel, which aims to provide the novel modular temporary support assembly structure of the ultra-large section loess tunnel, and realizes on-site assembly type operation through I-shaped steel, special accessories, bolt connection and the like, so that the material is recycled, and the use cost is greatly reduced; it includes vertical braces, hoop support and interim invert, can dismantle the connection through door type structure and taut structure between the vertical braces, can dismantle the connection between vertical braces and the hoop support, can dismantle the connection between the both ends of interim invert and vertical braces and the hoop support.
Description
Technical Field
The invention relates to the technical field of tunnel construction support, in particular to a novel modular temporary support assembly structure of an ultra-large section loess tunnel.
Background
In the prior art, the construction methods of double-side-wall pilot tunnels, CD, CRD and the like are suitable for tunnel construction with large span, poor surrounding rock conditions and high requirements on ground deformation control, and are widely applied to the construction of highway tunnels in northwest regions with widely distributed collapsible loess. A large amount of temporary supports are required to be carried out in the construction process to ensure the stability of surrounding rocks, the stress of a temporary support system is complex, the closing time of the full section of the primary support is long, the temporary support structure is detached to greatly disturb the tunnel structure and the surrounding rocks, and the material recovery rate is low. In order to effectively solve the technical problems, an assembled temporary supporting structure is generally adopted to replace a traditional temporary supporting system so as to realize quick mounting and dismounting and modular component recycling.
At present, during tunnel construction, the temporary support basically adopts a welding process, a traditional welding type steel frame system needs to be welded and fixed, the steel frame is easy to generate heat and deform, welding can leave a crater on the steel frame, the crater needs to be subjected to later-stage deslagging and rust prevention treatment, the treatment is improper, and the steel frame is easy to oxidize and rust, so that the service life of the steel frame is influenced. Meanwhile, the biggest defect of electric welding connection is that cold joint is easy to generate, so that potential safety hazards are caused when a steel frame system is buried. Spark is splashed around in an electric welding operation construction site, smoke is splashed around, welding slag is filled in the ground, professional equipment and auxiliary equipment are required to be matched, energy consumption is relatively large, and the electric welding has fatal hidden danger, namely fire. Most importantly, the materials are inconvenient to disassemble after welding and can only be cut, so that the materials cannot be reused, a large amount of materials are wasted, and the production cost is increased.
In view of the above technical problems, a temporary support structure for a non-welding assembly type steel frame needs to be researched so as to realize field assembly type operation, realize material recycling and greatly reduce use cost.
Disclosure of Invention
The invention aims to provide a novel modular temporary supporting and assembling structure for an extra-large section loess tunnel, which realizes field assembly type operation through I-shaped steel, special accessories, bolt connection and the like, realizes material recycling and greatly reduces the use cost.
In order to achieve the purpose, the invention adopts the following technical scheme:
super large section loess tunnel novel module formula supports assembly structure temporarily, its characterized in that: including vertical braces 1, hoop support 2 and interim invert 3, can dismantle the connection through door type structure 4 and taut structure 5 between the vertical braces 1, vertical braces 1 and hoop support and to dismantle between 2 and be connected, can dismantle between both ends and vertical braces 1 and the hoop support 2 of interim invert 3 and be connected.
The vertical supports 1, the annular supports 2 and the temporary inverted arches 3 are made of I-shaped steel.
The door-shaped structure 4 comprises a left door panel 401 and a right door panel 402, the left door panel 401 and the right door panel 402 are respectively connected to two adjacent vertical supports 1 through bolts, and the left door panel 401 and the right door panel 402 are installed in a staggered manner, so that a gap is kept between the adjacent surfaces of the left door panel 401 and the right door panel 402; a locking mechanism is installed between the left door panel 401 and the right door panel 402.
The locking mechanism comprises a clamping plate 404 arranged on the left door plate 401 and a clamping groove 405 arranged on the right door plate 402, the clamping plate 404 is connected with the left door plate 401 through a pin shaft 403, the clamping plate 404 can rotate around the pin shaft 403, the clamping plate 404 can be clamped in the clamping groove 405, and the left door plate 401 and the right door plate 402 are connected together.
The left door panel 401 and the right door panel 402 are made of steel plates or steel meshes.
The tensioning structure 5 comprises a rotary tensioner 501, two ends of the rotary tensioner 501 are respectively in threaded connection with a screw 502, the other end of the screw 502 is fixedly connected with a fixing part 503, and the fixing part 503 is sleeved with a bolt 504 and a nut 505; the fixing parts 503 at the two ends of the tensioning structure 5 are respectively connected with the two adjacent vertical supports 1.
The vertical support 1 comprises an upper vertical support 101 and a lower vertical support 102, a first steel plate 103 is welded at the lower end of the upper vertical support 101, a second steel plate 104 is welded at the upper end of the lower vertical support 102, and the first steel plate 103 is directly connected with the second steel plate 104 through bolts.
The top of the vertical support 1 is welded with a third steel plate 105, the joint of the annular support 2 and the top of the vertical support 1 is welded with a fourth steel plate 201, and the fourth steel plate 201 is connected with the third steel plate 105 through bolts; the bottom welding of vertical braces 1 has ninth steel sheet 107, the hoop is supported 2 and the junction welding of vertical braces 1 bottom has support 203, support 203 passes through bolted connection before with ninth steel sheet 107.
A fifth steel plate 301 and a sixth steel plate 302 are respectively welded at the left end and the right end of the temporary inverted arch 3, a seventh steel plate 202 is welded at the joint of the circumferential support 2 and the left end of the temporary inverted arch 3, and the seventh steel plate 202 is connected with the fifth steel plate 301 through bolts; an eighth steel plate 106 is welded at the joint of the vertical support 1 and the right end of the temporary inverted arch 3, and the eighth steel plate 106 is connected with a sixth steel plate 302 through bolts.
The invention has the beneficial effects that: the temporary support is made of I-shaped steel, and the node connection of the vertical support 1 and the annular support 2 adopts a detachable structure, so that the recovery of the temporary support is ensured; the longitudinal connection between the vertical supports along the excavation direction adopts a transverse and oblique tensioning structure 5 to connect adjacent I-shaped steel, so that a truss structure is formed, and the integral rigidity of the truss structure is ensured; the upper vertical support 101 and the lower vertical support 102 are connected by bolts in a detachable structure, so that the upper vertical support and the lower vertical support are convenient to disassemble and recycle after use; the side wall of the surrounding rock is connected with the vertical support 1 by adopting a door-shaped structure 4 (a steel plate or a steel bar net) so as to block the earthwork or the surrounding rock; the temporary inverted arch 3, the vertical supports 1 on the two sides and the annular supports 2 are connected by adopting assembly type bolts, so that on-site assembly type operation is realized, the material is recycled, and the use cost is greatly reduced.
Drawings
FIG. 1 is a first schematic structural diagram of the present invention;
FIG. 2 is a second schematic structural view of the present invention;
FIG. 3 is a third schematic structural view of the present invention;
FIG. 4 is a schematic structural view of a tensioning arrangement according to the present invention;
FIG. 5 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 6 is an enlarged view of a portion of the present invention at B of FIG. 1;
FIG. 7 is an enlarged view of a portion of the present invention at C of FIG. 2;
FIG. 8 is an enlarged view of a portion of the present invention at D in FIG. 3;
FIG. 9 is an enlarged fragmentary view at E in FIG. 2 of the present invention;
fig. 10 is an enlarged view of a portion of the invention at F in fig. 2.
Shown in the figure: the vertical support 1, the hoop support 2, the temporary inverted arch 3, the door-shaped structure 4, the tensioning structure 5, the first steel plate 103, the second steel plate 104, the third steel plate 105, the eighth steel plate 106, the ninth steel plate 107, the fourth steel plate 201, the seventh steel plate 202, the support 203, the fifth steel plate 301, the left door plate 401, the right door plate 402, the pin shaft 403, the clamping plate 404, the clamping groove 405, the rotary tensioner 501, the screw 502, the fixing part 503, the bolt 504 and the nut 505.
Detailed Description
The following detailed description of embodiments of the present invention is provided in connection with the accompanying drawings and examples. The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention.
Example 1
Novel modular temporary support assembly structure in super large section loess tunnel as shown in fig. 1-3, its characterized in that: including vertical braces 1, hoop support 2 and interim invert 3, can dismantle the connection through door type structure 4 and taut structure 5 between the vertical braces 1, vertical braces 1 and hoop support and to dismantle between 2 and be connected, can dismantle between both ends and vertical braces 1 and the hoop support 2 of interim invert 3 and be connected.
The vertical supports 1, the annular supports 2 and the temporary inverted arches 3 are made of I-shaped steel.
As shown in fig. 6, the door type structure 4 includes a left door panel 401 and a right door panel 402, the left door panel 401 and the right door panel 402 are respectively connected to two adjacent vertical supports 1 through bolts, the left door panel 401 and the right door panel 402 are installed in a staggered manner, so that a gap is maintained between adjacent surfaces of the left door panel 401 and the right door panel 402, and the gap between the left door panel 401 and the right door panel 402 is 1 cm; a locking mechanism is installed between the left door panel 401 and the right door panel 402.
As shown in fig. 6, the locking mechanism includes a locking plate 404 installed on the left door panel 401 and a locking groove 405 installed on the right door panel 402, the locking plate 404 is connected to the left door panel 401 through a pin 403, the locking plate 404 can rotate around the pin 403, and the locking plate 404 can be locked in the locking groove 405 to connect the left door panel 401 and the right door panel 402 together.
The left door panel 401 and the right door panel 402 are made of steel plates or steel bar meshes; the thickness of the steel plate or the reinforcing mesh is 10 mm.
As shown in fig. 4, the tensioning structure 5 includes a rotary tensioner 501, two ends of the rotary tensioner 501 are respectively connected with a screw 502 in a threaded manner, the other end of the screw 502 is fixedly connected with a fixing member 503, and a bolt 504 and a nut 505 are sleeved on the fixing member 503; the fixing parts 503 at the two ends of the tensioning structure 5 are respectively connected with the two adjacent vertical supports 1.
As shown in fig. 5, the vertical support 1 includes an upper vertical support 101 and a lower vertical support 102, a first steel plate 103 is welded to the lower end of the upper vertical support 101, a second steel plate 104 is welded to the upper end of the lower vertical support 102, and the first steel plate 103 and the second steel plate 104 are directly connected through bolts.
As shown in fig. 7, a third steel plate 105 is welded on the top of the vertical support 1, a fourth steel plate 201 is welded at the joint of the circumferential support 2 and the top of the vertical support 1, and the fourth steel plate 201 is connected with the third steel plate 105 through a bolt; the bottom welding of vertical braces 1 has ninth steel sheet 107, the hoop is supported 2 and the junction welding of vertical braces 1 bottom has support 203, support 203 passes through bolted connection before with ninth steel sheet 107.
As shown in fig. 8 and 9, a fifth steel plate 301 and a sixth steel plate 302 are welded to the left and right ends of the temporary inverted arch 3, respectively, a seventh steel plate 202 is welded to the joint of the circumferential support 2 and the left end of the temporary inverted arch 3, and the seventh steel plate 202 and the fifth steel plate 301 are connected by bolts; an eighth steel plate 106 is welded at the joint of the vertical support 1 and the right end of the temporary inverted arch 3, and the eighth steel plate 106 is connected with a sixth steel plate 302 through bolts.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (9)
1. Super large section loess tunnel novel module formula supports assembly structure temporarily, its characterized in that: including vertical braces (1), hoop support (2) and interim invert (3), can dismantle the connection through door type structure (4) and taut structure (5) between vertical braces (1), can dismantle the connection between vertical braces (1) and hoop support (2), can dismantle the connection between the both ends of interim invert (3) and vertical braces (1) and hoop support (2).
2. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 1, wherein: the vertical supports (1), the annular supports (2) and the temporary inverted arch (3) are made of I-shaped steel.
3. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 1, wherein: the door type structure (4) comprises a left door panel (401) and a right door panel (402), the left door panel (401) and the right door panel (402) are respectively connected to two adjacent vertical supports (1) through bolts, and the left door panel (401) and the right door panel (402) are installed in a staggered mode, so that a gap is kept between adjacent surfaces of the left door panel (401) and the right door panel (402); a locking mechanism is arranged between the left door panel (401) and the right door panel (402).
4. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 3, wherein: locking mechanical system is including installing screens board (404) on left door board (401) and installing screens groove (405) on right door board (402), be connected through round pin axle (403) between screens board (404) and left door board (401), screens board (404) can rotate around round pin axle (403), but screens board (404) joint is in screens groove (405), links together left door board (401) and right door board (402).
5. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 3, wherein: the left door panel (401) and the right door panel (402) are made of steel plates or steel mesh sheets.
6. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 1, wherein: the tensioning structure (5) comprises a rotary tensioner (501), two ends of the rotary tensioner (501) are respectively in threaded connection with a screw (502), the other end of the screw (502) is fixedly connected with a fixing piece (503), and a bolt (504) and a nut (505) are sleeved on the fixing piece (503); and the fixing pieces (503) at the two ends of the tensioning structure (5) are respectively connected with the two adjacent vertical supports (1).
7. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 1, wherein: the vertical support (1) comprises an upper vertical support (101) and a lower vertical support (102), a first steel plate (103) is welded at the lower end of the upper vertical support (101), a second steel plate (104) is welded at the upper end of the lower vertical support (102), and the first steel plate (103) is directly connected with the second steel plate (104) through bolts.
8. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 1, wherein: a third steel plate (105) is welded at the top of the vertical support (1), a fourth steel plate (201) is welded at the joint of the circumferential support (2) and the top of the vertical support (1), and the fourth steel plate (201) is connected with the third steel plate (105) through bolts; the welding of the bottom of vertical braces (1) has ninth steel sheet (107), the welding of the junction of hoop support (2) and vertical braces (1) bottom has support (203), support (203) and ninth steel sheet (107) are preceding through bolted connection.
9. The novel modular temporary supporting and assembling structure of the extra-large cross-section loess tunnel according to claim 1, wherein: a fifth steel plate (301) and a sixth steel plate (302) are respectively welded at the left end and the right end of the temporary inverted arch (3), a seventh steel plate (202) is welded at the joint of the circumferential support (2) and the left end of the temporary inverted arch (3), and the seventh steel plate (202) is connected with the fifth steel plate (301) through bolts; the joint of the vertical support (1) and the right end of the temporary inverted arch (3) is welded with an eighth steel plate (106), and the eighth steel plate (106) is connected with a sixth steel plate (302) through bolts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110544008.4A CN113309550B (en) | 2021-05-19 | 2021-05-19 | Modular temporary supporting and assembling structure for ultra-large section loess tunnel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110544008.4A CN113309550B (en) | 2021-05-19 | 2021-05-19 | Modular temporary supporting and assembling structure for ultra-large section loess tunnel |
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| Publication Number | Publication Date |
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| CN113309550A true CN113309550A (en) | 2021-08-27 |
| CN113309550B CN113309550B (en) | 2024-02-27 |
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| CN202110544008.4A Active CN113309550B (en) | 2021-05-19 | 2021-05-19 | Modular temporary supporting and assembling structure for ultra-large section loess tunnel |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075163A (en) * | 2012-12-28 | 2013-05-01 | 成都中铁隆工程集团有限公司 | Support change process of second liner construction of large-cross-section tunnel |
| CN203321538U (en) * | 2013-06-25 | 2013-12-04 | 中铁十六局集团地铁工程有限公司 | Variable-cross-section tunnel lining mold |
| WO2016095630A1 (en) * | 2014-12-15 | 2016-06-23 | 中铁第四勘察设计院集团有限公司 | Method for constructing extra-large variable cross section tunnel |
| CN108868834A (en) * | 2018-07-10 | 2018-11-23 | 中铁二十局集团有限公司 | Tunnel arch wall preliminary bracing invades limit and changes arch construction gib system |
| CN208502796U (en) * | 2018-07-10 | 2019-02-15 | 中铁二十局集团有限公司 | Tunnel arch wall preliminary bracing invades limit and changes arch construction gantry type support construction |
| CN208578574U (en) * | 2018-06-15 | 2019-03-05 | 中铁八局集团昆明铁路建设有限公司 | A kind of nine supporting construction of double -side approach |
| CN211081876U (en) * | 2019-12-10 | 2020-07-24 | 中铁二十局集团第二工程有限公司 | Pass through weak surrounding rock tunnel preliminary bracing structure of rich water in broken area of fault |
| CN112412499A (en) * | 2020-11-17 | 2021-02-26 | 魏良帅 | Construction supporting system for tunnel water burst and construction method |
-
2021
- 2021-05-19 CN CN202110544008.4A patent/CN113309550B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103075163A (en) * | 2012-12-28 | 2013-05-01 | 成都中铁隆工程集团有限公司 | Support change process of second liner construction of large-cross-section tunnel |
| CN203321538U (en) * | 2013-06-25 | 2013-12-04 | 中铁十六局集团地铁工程有限公司 | Variable-cross-section tunnel lining mold |
| WO2016095630A1 (en) * | 2014-12-15 | 2016-06-23 | 中铁第四勘察设计院集团有限公司 | Method for constructing extra-large variable cross section tunnel |
| CN208578574U (en) * | 2018-06-15 | 2019-03-05 | 中铁八局集团昆明铁路建设有限公司 | A kind of nine supporting construction of double -side approach |
| CN108868834A (en) * | 2018-07-10 | 2018-11-23 | 中铁二十局集团有限公司 | Tunnel arch wall preliminary bracing invades limit and changes arch construction gib system |
| CN208502796U (en) * | 2018-07-10 | 2019-02-15 | 中铁二十局集团有限公司 | Tunnel arch wall preliminary bracing invades limit and changes arch construction gantry type support construction |
| CN211081876U (en) * | 2019-12-10 | 2020-07-24 | 中铁二十局集团第二工程有限公司 | Pass through weak surrounding rock tunnel preliminary bracing structure of rich water in broken area of fault |
| CN112412499A (en) * | 2020-11-17 | 2021-02-26 | 魏良帅 | Construction supporting system for tunnel water burst and construction method |
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| Publication number | Publication date |
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| CN113309550B (en) | 2024-02-27 |
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