CN212406746U - Corrugated steel bias open cut tunnel structure - Google Patents
Corrugated steel bias open cut tunnel structure Download PDFInfo
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- CN212406746U CN212406746U CN202020902024.7U CN202020902024U CN212406746U CN 212406746 U CN212406746 U CN 212406746U CN 202020902024 U CN202020902024 U CN 202020902024U CN 212406746 U CN212406746 U CN 212406746U
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- corrugated steel
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- tunnel structure
- cut tunnel
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Abstract
The invention discloses a corrugated steel bias open cut tunnel structure which comprises an inverted arch structure, wherein two sides of the upper end of the inverted arch structure are respectively connected with an arch ring concrete layer to form a tunnel structure, a corrugated steel layer is arranged on the inner side surface of the arch ring concrete layer, and the lower end of the corrugated steel layer is fixedly connected with the upper end of the inverted arch structure through a connecting piece; the position adjacent to the tunnel structure is a side slope, and one side of the tunnel structure deviating from the side slope is fixedly connected with the bias retaining wall; a backfill layer is filled at the position between the bias retaining wall and the side slope; the backfill layer sequentially comprises a mortar rubble layer, a gravel soil layer and a greening layer from bottom to top. The open cut tunnel structure can solve the problems of large excavation area and complex engineering of the open cut tunnel structure in the prior art, and has the advantages of simple structure, good reliability and small excavation area.
Description
Technical Field
The invention relates to the technical field of highway tunnel construction, in particular to a corrugated steel bias open cut tunnel structure.
Background
The traditional bias open cut tunnel structure and construction thereof can carry out large-area slope excavation and protection, can seriously affect the surface vegetation and the engineering aesthetic property, have larger engineering quantity and cause uneconomic manufacturing cost. Therefore, it is necessary to invent a corrugated steel biased open cut tunnel structure which is safe, fast and economical in construction to solve the above problems. The corrugated steel structure is the section steel rolled by a common Q235 or Q345 steel plate through a special processing technology, has a plurality of excellent characteristics such as high strength, strong adaptive deformability, convenient transportation and construction, low carbon, environmental protection, strong durability after galvanization, convenient operation and maintenance and the like, has good compression resistance, bending resistance and corrosion resistance by forming a combined structure open cut tunnel with concrete, and can improve the safety and durability and save the manufacturing cost compared with a reinforced concrete structure.
However, the simple corrugated steel structure cannot meet the problems of large excavation area, serious damage to surface vegetation, high engineering cost and the like of the open cut tunnel structure, and the defects still exist in practical application.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides the corrugated steel bias open cut tunnel structure which can solve the problems of large excavation area and complex engineering of the open cut tunnel structure in the prior art.
In order to solve the technical problems, the invention adopts the following technical scheme:
the corrugated steel bias open cut tunnel structure comprises an inverted arch structure, wherein two sides of the upper end of the inverted arch structure are respectively connected with an arch ring concrete layer to form a tunnel structure, a corrugated steel layer is arranged on the inner side surface of the arch ring concrete layer, and the lower end of the corrugated steel layer is fixedly connected with the upper end of the inverted arch structure through a connecting piece; the position adjacent to the tunnel structure is a side slope, and one side of the tunnel structure deviating from the side slope is fixedly connected with the bias retaining wall; a backfill layer is filled at the position between the bias retaining wall and the side slope; the backfill layer sequentially comprises a mortar rubble layer, a gravel soil layer and a greening layer from bottom to top.
The corrugated steel bias open cut tunnel structure provided by the invention has the main beneficial effects that:
the corrugated steel bias open cut tunnel structure provided by the invention has a supporting structure of the open cut tunnel formed by the corrugated steel structure and the concrete structure, and has good stress performance; after the corrugated steel structure is constructed, the corrugated steel structure is used as a template on the inner side of concrete, so that the engineering cost can be effectively saved; the surface of the corrugated steel structure has good corrosion resistance after being galvanized, and the durability of the open cut tunnel structure can be improved.
This scheme can effectively solve traditional open cut tunnel structure side slope excavation area great, the destruction of earth's surface vegetation is serious, problem such as engineering cost height, and the effect of bias load can be resisted in the setting of bias barricade, and earth's surface greening behind the backfill soil stone can promote open cut tunnel structure's aesthetic property and environmental protection, accomplishes green construction.
Drawings
Fig. 1 is a schematic structural diagram of a corrugated steel bias open cut tunnel structure provided by the scheme.
Fig. 2 is a schematic structural view of a corrugated steel layer.
Fig. 3 is a schematic view of the structure of the connector.
Fig. 4 is a schematic cross-sectional view of a deck plate.
The tunnel structure comprises a tunnel structure 1, an inverted arch structure 11, an arch ring concrete layer 12, a corrugated steel layer 2, a corrugated steel plate 21, a bias retaining wall 3, a backfill layer 4, a grout rubble layer 41, a grout rubble layer 42, a rubble soil layer 43, a greening layer 5, a side slope 6, a connecting piece 61, a high-strength bolt 62, an embedded bolt 63 and a connecting plate.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
fig. 1 is a schematic structural diagram of a corrugated steel bias open cut tunnel structure.
The corrugated steel bias open cut tunnel structure comprises an inverted arch structure 11, wherein two sides of the upper end of the inverted arch structure 11 are respectively connected with an arch ring concrete layer 12 to form a tunnel structure 1, a corrugated steel layer 2 is arranged on the inner side surface of the arch ring concrete layer 12, and the lower end of the corrugated steel layer 2 is fixedly connected with the upper end of the inverted arch structure 11 through a connecting piece 6.
The side slope 5 is arranged at the position adjacent to the tunnel structure 1, and one side of the tunnel structure 1 deviating from the side slope 5 is fixedly connected with the bias retaining wall 3; a backfill layer 4 is filled at the position between the bias retaining wall 3 and the side slope 5; the backfill layer 4 sequentially comprises a grout rubble layer 41, a gravel soil layer 42 and a greening layer 43 from bottom to top.
Specifically, as shown in fig. 3, the connecting member 6 includes an embedded bolt 62 disposed inside the inverted arch structure 11, an upper end of the embedded bolt 62 is connected to the corrugated steel layer 2, a connecting plate 63 is disposed between the corrugated steel layer 2 and the inverted arch structure 11, and the embedded bolt 62 is disposed on the connecting plate 63 in a penetrating manner.
The cross section of the connecting plate 63 is in a fold line shape, the embedded bolts 62 penetrate through the lower portion of the connecting plate 63, the upper portion of the connecting plate 63 is attached to the outer side wall of the corrugated steel layer 2, and the high-strength bolts 61 penetrate through the upper portion of the connecting plate 63.
The corrugated steel layer 2 comprises corrugated steel plates 21 which are overlapped with each other. The corrugated steel plates 21 are spliced by high-strength bolts 61 in a staggered manner, as shown in fig. 2. The corrugated steel sheet 21 is a rolled Q235 or Q345 steel sheet. The cross-sectional corrugation of the corrugated steel sheet 21 has a sinusoidal waveform, as shown in fig. 4.
The surface of the corrugated steel sheet 21 is provided with a hot-dip galvanized layer. The thickness of the hot-dip galvanized layer is not less than 63 micrometers, and the average thickness is not less than 84 micrometers.
Preferably, the stone masonry layer 41 is located between the tunnel structure 1 and the slope 5 and the gravel layer 42 is located on the sides and above the tunnel structure 1.
The bias load of the bias open cut tunnel can be effectively controlled by arranging the bias retaining wall 3, and the mortar rubble layer 41 and the rubble layer 42 can enable the tunnel structure 1 and the side slope 5 to form an effective stressed whole.
The construction method of the corrugated steel bias open cut tunnel structure provided by the invention comprises the following steps:
s1, reasonably arranging a construction site according to the conditions of engineering scale, construction period, topographic features, waste slag yard, water source and the like, preparing construction equipment and instruments meeting engineering requirements before construction, and completing corresponding verification work, wherein the construction equipment comprises an excavator, a loader, a concrete transport vehicle and the like.
And S2, excavating corresponding sections of the open cut tunnel to be constructed from top to bottom in sequence, and protecting the side slope 5.
S3, constructing an inverted arch structure 11 of the open cut tunnel, and presetting a connecting piece 6 in a steel bar of the inverted arch structure 11.
S4, assembling the corrugated steel layer 2, assembling the corrugated steel plates 21 in a staggered joint mode to guarantee stress performance, connecting the corrugated steel plates 21 in a lap joint mode through high-strength bolts 9, and connecting the corrugated steel layer 2 and the inverted arch structure 11 through embedded bolts 62 and connecting plates 63.
After the connection is finished, the high-strength bolt 61 is installed at the upper part of the connecting plate 63 to ensure the fixing effect of the connecting plate 6.
And S5, taking the corrugated steel layer 2 as an inner side template, and erecting the mold to pour the arch ring concrete layer 12. Before the concrete is poured, temporary supports are preferably arranged at the arch crown and the quartering point on the inner side of the arch ring concrete layer 12, so that the structural deformation of the corrugated steel plate 21 is prevented from being too large during pouring.
S6, pouring the offset retaining wall 3 through the vertical mold, and connecting the steel bars of the offset retaining wall 3 with the steel bars of the arch ring concrete layer 12 to form a stressed whole.
S7, backfilling the grouted rubble layer 41 and the gravel soil layer 42, and finally paving the greening layer 43 on the ground to protect the environment and improve the engineering attractiveness.
The above description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
Claims (10)
1. A corrugated steel bias open cut tunnel structure is characterized by comprising an inverted arch structure, wherein two sides of the upper end of the inverted arch structure are respectively connected with an arch ring concrete layer to form a tunnel structure, a corrugated steel layer is arranged on the inner side surface of the arch ring concrete layer, and the lower end of the corrugated steel layer is fixedly connected with the upper end of the inverted arch structure through a connecting piece; the position adjacent to the tunnel structure is a side slope, and one side of the tunnel structure deviating from the side slope is fixedly connected with the bias retaining wall; a backfill layer is filled at the position between the bias retaining wall and the side slope; the backfill layer sequentially comprises a mortar rubble layer, a gravel soil layer and a greening layer from bottom to top.
2. The open cut tunnel structure with corrugated steel bias pressure of claim 1, wherein the connecting piece comprises embedded bolts arranged inside the inverted arch structure, the upper ends of the embedded bolts are connected with the corrugated steel layer, a connecting plate is arranged between the corrugated steel layer and the inverted arch structure, and the embedded bolts penetrate through the connecting plate.
3. The corrugated steel biasing open cut tunnel structure according to claim 2, wherein the cross section of the connecting plate is in a zigzag shape, the embedded bolts penetrate through the lower portion of the connecting plate, the upper portion of the connecting plate is attached to the side wall of the corrugated steel layer, and the high-strength bolts penetrate through the upper portion of the connecting plate.
4. The corrugated steel biased open-cut tunnel structure of claim 1, wherein the corrugated steel layer comprises overlapping corrugated steel sheets.
5. The corrugated steel biasing open cut tunnel structure according to claim 4, wherein the corrugated steel plates are spliced by high-strength bolts in a staggered manner.
6. The corrugated steel bias open cut tunnel structure according to claim 5, wherein the corrugated steel plate is made of a Q235 or Q345 steel plate which is processed and rolled.
7. The corrugated steel biased open-cut tunnel structure according to claim 6, wherein the corrugated shape of the cross section of the corrugated steel plate is a sine wave shape.
8. The corrugated steel biasing open cut tunnel structure according to claim 7, wherein the corrugated steel plate is provided with a hot-dip galvanized layer on the surface thereof.
9. The corrugated steel biased open-cut tunnel structure according to claim 8, wherein the hot-galvanized layer has a thickness of not less than 63 microns and an average thickness of not less than 84 microns.
10. The corrugated steel bias open cut tunnel structure of claim 1, wherein the layer of grout rubble is located between the tunnel structure and the slope, and the layer of gravel is located to the sides of and above the tunnel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020902024.7U CN212406746U (en) | 2020-05-26 | 2020-05-26 | Corrugated steel bias open cut tunnel structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020902024.7U CN212406746U (en) | 2020-05-26 | 2020-05-26 | Corrugated steel bias open cut tunnel structure |
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| Publication Number | Publication Date |
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| CN212406746U true CN212406746U (en) | 2021-01-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202020902024.7U Expired - Fee Related CN212406746U (en) | 2020-05-26 | 2020-05-26 | Corrugated steel bias open cut tunnel structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198793A (en) * | 2022-07-08 | 2022-10-18 | 中铁二院工程集团有限责任公司 | Side slope open cut tunnel supporting structure and construction method thereof |
-
2020
- 2020-05-26 CN CN202020902024.7U patent/CN212406746U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115198793A (en) * | 2022-07-08 | 2022-10-18 | 中铁二院工程集团有限责任公司 | Side slope open cut tunnel supporting structure and construction method thereof |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210126 |