CN111456759A - Assembled tunnel lining structure - Google Patents
Assembled tunnel lining structure Download PDFInfo
- Publication number
- CN111456759A CN111456759A CN202010076656.7A CN202010076656A CN111456759A CN 111456759 A CN111456759 A CN 111456759A CN 202010076656 A CN202010076656 A CN 202010076656A CN 111456759 A CN111456759 A CN 111456759A
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- Prior art keywords
- lining
- secondary lining
- arch
- side wall
- tunnel
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- 239000011150 reinforced concrete Substances 0.000 claims abstract description 14
- 229910000831 Steel Inorganic materials 0.000 claims description 28
- 239000010959 steel Substances 0.000 claims description 28
- 239000004567 concrete Substances 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 6
- 230000002787 reinforcement Effects 0.000 claims description 2
- 230000000149 penetrating effect Effects 0.000 claims 3
- 238000010276 construction Methods 0.000 abstract description 19
- 238000000034 method Methods 0.000 abstract description 14
- 230000007547 defect Effects 0.000 abstract description 9
- 238000009418 renovation Methods 0.000 abstract description 3
- 238000009749 continuous casting Methods 0.000 abstract description 2
- 230000008569 process Effects 0.000 description 8
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 241000264877 Hippospongia communis Species 0.000 description 1
- 206010023204 Joint dislocation Diseases 0.000 description 1
- 229910000746 Structural steel Inorganic materials 0.000 description 1
- 238000010923 batch production Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000032258 transport Effects 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
-
- 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
- E21D11/04—Lining with building materials
- E21D11/08—Lining with building materials with preformed concrete slabs
- E21D11/083—Methods or devices for joining adjacent concrete segments
-
- 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
- E21D11/04—Lining with building materials
- E21D11/10—Lining with building materials with concrete cast in situ; Shuttering also lost shutterings, e.g. made of blocks, of metal plates or other equipment adapted therefor
-
- 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
- E21D11/38—Waterproofing; Heat insulating; Soundproofing; Electric insulating
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Architecture (AREA)
- Civil 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 utility model provides an assembled tunnel lining structure to when improving the industrialization degree and the efficiency of construction of mine method tunnel construction, effectively guarantee the quality of hunch portion lining cutting, overcome the lining cutting hunch portion quality defect that leads to because the cast-in-place control difficulty, ensure the safety of tunnel operation, reduce the input of operation phase renovation. Including the primary support structure, prevent drainage system and the secondary lining structure that from interior to exterior set up, the secondary lining structure includes invert, side wall secondary lining and hunch portion secondary lining. And two ends of the inverted arch are fixedly connected with the bottom end of the secondary lining of the side wall, and the inverted arch is formed by continuous casting in sections along the extending direction of the tunnel. The secondary lining of the arch part is of a prefabricated structure and is formed by longitudinally assembling reinforced concrete prefabricated building block units, and the two ends of the annular part and the secondary lining of the side wall on the same side form lap joints through a connecting structure or form fixed connection through a connecting component and a post-pouring joint.
Description
Technical Field
The invention relates to a tunnel lining structure, in particular to an assembled tunnel lining structure with an arch part adopting prefabricated components.
Background
In recent years, the railway construction of China is rapidly developed, and particularly the construction of high-speed railways enters an explosive growth stage. With the rapid increase of railway operation mileage and the increase of tunnel ratio caused by the improvement of line standards, the number and scale of railway tunnels also tend to increase rapidly, and particularly in southwest mountainous areas, the occupation ratio of the tunnels in railway infrastructure projects is extremely high.
In the current mine method tunnel construction process, due to various process qualities and other factors, quality defects of primary support or lining back void, insufficient thickness of secondary lining, cracks, water leakage, construction joint dislocation, uneven or insufficient concrete strength and the like exist in partial sections, and the quality problems are particularly prominent in tunnel arch parts and bring great hidden danger to railway operation safety. In recent years, a plurality of opened high-speed railways have a plurality of diseases caused by tunnel lining quality defects during operation, so that accidents of speed reduction operation and even line interruption are caused, high attention is paid to all parties, and huge manpower and material resources are invested for renovation.
The tunnel lining constructed by the traditional mine method generally adopts a cast-in-place structure form with a curved wall and an inverted arch. When in construction, reinforcing steel bars are bound at the inverted arch part and concrete is poured, side wall joint reinforcing steel bars are reserved at two sides when the inverted arch is poured, after the inverted arch is constructed by a certain step distance towards the tunnel face, the side wall and the arch part are bound by using a lining template trolley and the concrete is poured integrally, and side wall feet are connected with the inverted arch through the joint reinforcing steel bars at the two sides of the inverted arch to form a whole, so that the whole lining is formed by pouring in situ. The biggest defects of the traditional tunnel lining construction are as follows: because the lining is integrally cast on site, the casting process is of great importance to the lining quality, however, in actual construction, because the binding of structural steel bars is not in place, the construction process problems of mould entering, vibration, concrete pouring difficulty and the like are easily caused, the concrete lining is easy to crack or even peel off and fall blocks in the operation process due to the conditions of honeycombs, pitted surfaces, insufficient thickness, non-compact casting vibration and the like, the driving safety of the line is threatened to a great extent, and the conditions are particularly serious at the arch part of the lining, and the threat to the driving safety is also the greatest.
Therefore, the tunnel lining structure constructed by the traditional mining method is optimized, the problem of quality defect of the arch part of the tunnel lining is fundamentally solved, the tunnel engineering quality is improved, and the driving safety in the tunnel is fully ensured to become the urgent need of tunnel construction.
Disclosure of Invention
The invention aims to provide an assembled tunnel lining structure, which can effectively ensure the quality of lining of an arch part while improving the industrialization degree and the construction efficiency of the mine tunnel construction, overcome the quality defect of the lining arch part caused by difficult cast-in-place control, ensure the safety of tunnel operation and reduce the investment of renovation in the operation period.
The technical scheme adopted by the invention for solving the technical problems is as follows:
The invention discloses an assembled tunnel lining structure, which comprises a primary supporting structure, a waterproof and drainage system and a secondary lining structure which are arranged from inside to outside, wherein the secondary lining structure comprises an inverted arch, a side wall secondary lining and an arch secondary lining, and is characterized in that: two ends of the inverted arch are fixedly connected with the bottom end of the secondary lining of the side wall, and the inverted arch is formed by subsection continuous pouring along the extending direction of the tunnel; the arch part secondary lining is of a prefabricated structure and formed by longitudinally assembling reinforced concrete prefabricated building block units, and the two ends of the arch part secondary lining and the secondary lining of the side wall on the same side form lap joints through a connecting structure or form fixed connection through a connecting component and a post-pouring joint.
The invention has the advantages that under the advantage of fully exerting the flexibility of the tunnel construction by the mine method, the secondary lining of the arch part adopts a prefabricated assembly structure, the reinforced concrete prefabricated building block units can be produced in batches in a factory and then transported to the site to be assembled mechanically, so that the site labor condition is improved, the material is saved, and the mechanization level and the labor efficiency of the tunnel construction are improved; because the arch lining is prefabricated in a factory, the structure quality can be effectively guaranteed, the quality defect of the arch lining caused by the cast-in-place process problem is avoided, the arch lining damage in the operation process is avoided, and the driving safety is guaranteed.
Drawings
The specification includes the following fifteen figures:
FIG. 1 is a cross-sectional view of an assembled tunnel lining structure of the present invention;
FIGS. 2 to 9 are schematic views showing the connection between the secondary lining of the side wall and the secondary lining of the arch in the fabricated tunnel lining structure according to the present invention;
FIG. 10 is a cross-sectional view taken along line B-B of FIG. 9;
FIG. 11 is a cross-sectional view taken along line C-C of FIG. 9;
FIGS. 12 and 13 are schematic diagrams illustrating how to assemble the secondary lining of the arch part in the fabricated tunnel lining structure according to the present invention;
FIGS. 14 and 15 are schematic views illustrating how to assemble the secondary lining of the arch part in the fabricated tunnel lining structure according to the present invention;
The figures show the parts, components and corresponding references: the primary support structure 10, the waterproof and drainage system 20, the side wall secondary lining 30, the inverted arch 31, the inverted arch filling layer 31a, the arch secondary lining 32, the circumferential connecting bolt 41, the circumferential sealing ring 42, the circumferential waterproof sealing gasket 43, the first steel structural member 51, the second steel structural member 52, the connecting steel 53, the connecting steel bar 54, the post-cast concrete 55, the longitudinal waterproof sealing gasket 60, the longitudinal connecting bolt 70 and the prestressed steel bar 71.
Detailed Description
The invention is further illustrated with reference to the following figures and examples.
Referring to fig. 1, the fabricated tunnel lining structure of the present invention includes a primary supporting structure 10, a waterproof and drainage system 20, and a secondary lining structure, which are arranged from inside to outside, and the secondary lining structure includes an inverted arch 31, a side wall secondary lining 30, and an arch secondary lining 32. The two ends of the inverted arch 31 are fixedly connected with the bottom end of the side wall secondary lining 30 and are formed by continuous casting in sections along the extending direction of the tunnel, namely the inverted arch 31 and the side wall secondary lining 30 are formed by adopting on-site vertical die casting. The arch secondary lining 32 is a prefabricated structure and is formed by longitudinally assembling reinforced concrete prefabricated building block units, and the two circumferential ends of the arch secondary lining and the secondary lining 30 of the side wall on the same side form lap joints through a connecting structure or form fixed connection through connecting components. Under the advantage of giving full play to the flexible tunnel construction of mine method, the secondary lining 32 of hunch portion adopts the prefabricated structure of assembling, and its reinforced concrete prefabricated block unit can be batch production in the mill, then transports to the scene and adopts mechanized assembly, improves the on-the-spot working condition, and material saving has improved the mechanized level and the labor efficiency of tunnel construction. Because the reinforced concrete prefabricated building block unit is prefabricated in an industrial mode, the structural quality can be effectively guaranteed, the arch lining quality defect caused by the cast-in-place process problem is avoided, the arch lining defect in the operation process is avoided, and the driving safety is guaranteed.
referring to fig. 6 and 7, the contact surfaces of the secondary lining 30 of the side wall and the secondary lining 32 of the arch part are in a corresponding L shape or a concave-convex shape, the connection structure is an L-shaped joggle structure or a concave-convex joggle structure formed by the contact surfaces, and a circumferential waterproof sealing gasket 43 extending longitudinally is arranged on the contact surfaces, so that the secondary lining 32 of the arch part is directly placed on the secondary lining 30 of the side wall during construction.
Referring to fig. 2 to 5, the contact surfaces of the side wall secondary lining 30 and the arch secondary lining 32 are corresponding planes or arc surfaces, the connecting member is a circumferential connecting bolt 41 which passes through the connecting hole at the end of the side wall secondary lining 30 and the arch secondary lining 32, and a longitudinally extending circumferential waterproof gasket 43 is arranged on the contact surface. The circumferential connecting bolt 41 may be an arc bolt or an obliquely arranged straight bolt.
Referring to fig. 10 and 11, the post-cast joint forming fixed connection is composed of a first section steel member 51, a second section steel member 52, a connection section steel 53, a stub bar 54, and post-cast concrete 55, which extend circumferentially. The first section steel member 51 is buried in the side wall secondary lining 30, the second section steel member 52 is buried in the arch secondary lining 32, and two ends of the connecting section steel 53 are respectively connected with the extending ends of the first section steel member 51 and the second section steel member 52 in a welding mode. The stubbled steel bars 54 are arranged outside the first section steel member 51 and the second section steel member 52, and the post-cast concrete 55 is poured between the circumferential end faces of the side wall secondary lining 30 and the arch secondary lining 32.
The arch secondary lining 32 is a prefabricated structure and is formed by longitudinally assembling reinforced concrete prefabricated building block units. Referring to fig. 12 and 13, two adjacent reinforced concrete precast block units in the arch secondary lining 32 are integrally connected by longitudinal connection bolts 70 passing through the longitudinal connection holes. Referring to fig. 14 and 15, adjacent pluralities of reinforced concrete precast block units in the arch secondary lining 32 are connected as one group by longitudinally extending prestressed reinforcements 71, and the adjacent groups are integrally connected by longitudinal connecting bolts 70 passing through the longitudinal connecting holes. To ensure the waterproof performance of the arch secondary lining 32, a circumferentially extending longitudinal waterproof gasket 60 is provided between the longitudinal contact surfaces of two adjacent reinforced concrete prefabricated block units in the arch secondary lining 32. The longitudinal coupling bolt 70 may be an arc bolt or an obliquely arranged straight bolt.
The foregoing merely illustrates some of the principles of the present invention as a fabricated tunnel lining structure and is not intended to limit the invention to the exact construction and operation shown and described, and accordingly all modifications and equivalents that may be employed fall within the scope of the claims.
Claims (8)
1. The utility model provides an assembled tunnel lining structure, includes by interior and outer primary support structure (10) that set up, waterproof drainage system (20) and secondary lining structure, and the secondary lining structure includes invert (31), side wall secondary lining (30) and hunch portion secondary lining (32), characterized by: two ends of the inverted arch (31) are fixedly connected with the bottom end of the side wall secondary lining (30) and are formed by subsection continuous pouring along the extending direction of the tunnel; the arch part secondary lining (32) is of a prefabricated structure and formed by longitudinally assembling reinforced concrete prefabricated building block units, and the two annular ends of the arch part secondary lining and the secondary lining (30) of the side wall on the same side form lap joints through a connecting structure or form fixed connection through a connecting component and a post-pouring joint.
2. the assembled tunnel lining structure as claimed in claim 1, wherein the contact surfaces of the secondary side wall lining (30) and the secondary arch lining (32) are correspondingly L-shaped or concave-convex, and the connecting structure is an L-shaped joggle structure or a concave-convex joggle structure formed by the contact surfaces.
3. A fabricated tunnel lining structure as claimed in claim 1, wherein: the contact surfaces of the secondary side wall lining (30) and the secondary arch lining (32) are corresponding planes or arc surfaces, and the connecting component is a circumferential connecting bolt (41) penetrating through the connecting holes at the ends of the secondary side wall lining (30) and the secondary arch lining (32).
4. A fabricated tunnel lining structure as claimed in claim 2 or 3, wherein: and the contact surface is provided with a circumferential waterproof sealing gasket (43) which extends longitudinally.
5. A fabricated tunnel lining structure as claimed in claim 1, wherein: the post-pouring joint comprises a first steel structural member (51) extending annularly, a second steel structural member (52), connecting steel bars (53), connecting steel bars (54) and post-pouring concrete (55); the first section steel component (51) is buried in the side wall secondary lining (30), the second section steel component (52) is buried in the arch secondary lining (32), and two ends of the connecting section steel (53) are respectively welded and connected with the extending ends of the first section steel component (51) and the second section steel component (52); the stubbled steel bars (54) are arranged outside the steel member (51) and the second steel member (52), and post-cast concrete (55) is poured between the circumferential end faces of the secondary lining (30) of the side wall and the secondary lining (32) of the arch part.
6. A fabricated tunnel lining structure as claimed in claim 1, wherein: two adjacent reinforced concrete prefabricated building block units in the arch secondary lining (32) are connected into a whole by a longitudinal connecting bolt (70) penetrating through a longitudinal connecting hole.
7. A fabricated tunnel lining structure as claimed in claim 1, wherein: a plurality of adjacent reinforced concrete prefabricated building block units in the arch part secondary lining (32) are connected into a group by longitudinally extending prestressed reinforcements (71), and the adjacent groups are connected into a whole by longitudinal connecting bolts (70) penetrating through longitudinal connecting holes.
8. A fabricated tunnel lining structure as claimed in claim 6 or 7, wherein: and a longitudinal waterproof sealing gasket (60) which extends in the circumferential direction is arranged between the longitudinal contact surfaces of two adjacent reinforced concrete prefabricated building block units in the arch part secondary lining (32).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010076656.7A CN111456759A (en) | 2020-01-23 | 2020-01-23 | Assembled tunnel lining structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010076656.7A CN111456759A (en) | 2020-01-23 | 2020-01-23 | Assembled tunnel lining structure |
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| CN111456759A true CN111456759A (en) | 2020-07-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010076656.7A Pending CN111456759A (en) | 2020-01-23 | 2020-01-23 | Assembled tunnel lining structure |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112879037A (en) * | 2021-04-22 | 2021-06-01 | 黄河交通学院 | Safe construction method for mine tunnel |
| CN113417668A (en) * | 2021-07-29 | 2021-09-21 | 中铁隧道集团一处有限公司 | Pouring construction method for high cantilever tunnel side wall |
| CN113417669A (en) * | 2021-07-29 | 2021-09-21 | 中铁隧道集团一处有限公司 | Lining construction method for side wall cast-in-place and arch prefabricated segment spherical joint assembly |
| CN113565539A (en) * | 2021-07-29 | 2021-10-29 | 中铁隧道集团一处有限公司 | Construction method for preventing initial support side from rebounding of cantilever type cast-in-place side wall of tunnel |
| CN113790065A (en) * | 2021-09-29 | 2021-12-14 | 中铁隧道局集团有限公司 | Auxiliary kit for in-situ repair of large-volume defects of tunnel lining by UHPC material and construction method |
| CN114753860A (en) * | 2022-05-17 | 2022-07-15 | 中铁第一勘察设计院集团有限公司 | Prefabricated and cast-in-place combined drilling and blasting tunnel lining structure and construction method thereof |
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