CN211948539U - Road structure of half roadbed and half tunnel - Google Patents
Road structure of half roadbed and half tunnel Download PDFInfo
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- CN211948539U CN211948539U CN202020016565.XU CN202020016565U CN211948539U CN 211948539 U CN211948539 U CN 211948539U CN 202020016565 U CN202020016565 U CN 202020016565U CN 211948539 U CN211948539 U CN 211948539U
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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
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Abstract
The utility model is suitable for a tunnel engineering technical field provides a road structure in half roadbed half tunnel. The road structure comprises a tunnel, a retaining wall and a cutting. Cutting, barricade and tunnel arrange along present situation ground uphill direction in proper order. The cross section of the tunnel is C-shaped, and a C-shaped opening extending along the longitudinal direction of the underground excavated tunnel faces the retaining wall; the retaining wall blocks the tunnel opening and is connected with the top wall and the bottom wall of the tunnel opening, and a row of circular holes are longitudinally arranged at the middle upper part of the retaining wall along a road at a certain interval and used for lighting and ventilating the tunnel so as to reduce the cost in the tunnel operation stage. The utility model provides a road structure of half width of a road bed half width of a tunnel has solved the road design construction problem that is located the abrupt slope edge, and environmental effect is good, and the operation stage security is high, and the operation cost is low; the utility model discloses a road structure, the earthwork volume of engineering is little, has saved the construction adult, has improved the efficiency of construction, is worth promoting on a large scale.
Description
Technical Field
The utility model belongs to the technical field of tunnel engineering, especially, relate to a road structure in half roadbed half tunnel.
Background
For roads built along mountains, when a route is inevitably located at the edge of a steep slope, the excavation height of a half road is small, the excavation depth of the other half road is large, and the two roads cannot be pulled apart, how to build the road is a difficult problem. At the moment, a half roadbed half tunnel type is theoretically made, but the half roadbed half tunnel in the prior art is few in method, and generally the whole road is made into a cutting type or a high retaining wall on one side. Because the route is located abrupt slope edge, the earthwork volume is huge this moment, and the environmental effect is poor, and has great potential safety hazard.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the technical problem that a road structure in half width of a road bed half width of a tunnel is provided, the environmental effect that exists when aiming at solving among the prior art at abrupt slope edge construction road is poor, has the problem of potential safety hazard.
The utility model is realized in such a way that the road structure of the half roadbed and the half tunnel comprises a tunnel, a retaining wall and a cutting; the cutting, the retaining wall and the tunnel are sequentially arranged along the current ground uphill direction; one side of the tunnel, which is close to the retaining wall, is provided with an opening which extends along the longitudinal direction of the tunnel; the retaining wall blocks the opening and is connected with the top wall and the bottom wall of the opening; and the top of the retaining wall extends upwards to form a wall top higher than the opening position.
Further, the shape of the cross section of the tunnel is in a C shape.
Further, the tunnel comprises a primary support, a waterproof layer and a secondary lining which are arranged from outside to inside; the primary support comprises a system anchor rod, sprayed concrete and a profile steel arch, wherein the profile steel arch is respectively provided with a steel backing plate at the top wall and the bottom wall of the opening and is welded with the steel backing plate; the secondary lining adopts a reinforced concrete structure.
Furthermore, the retaining wall is a gravity type retaining wall with a reinforced concrete structure, one side of the retaining wall, which is close to the tunnel, is arranged in a broken line manner, two first connecting surfaces and two second connecting surfaces are reserved on the retaining wall, the two first connecting surfaces are respectively connected with the top wall and the bottom wall of the opening of the tunnel, the first connecting surfaces are perpendicular to the axis of the top wall of the opening, and the second connecting surfaces are perpendicular to the axis of the bottom wall of the opening; the width of the first connecting surface and the second connecting surface is the sum of the thickness of the primary support and the thickness of the secondary lining.
Further, the first connection face and the second of barricade are connected the face with preliminary bracing's hookup location department all buries embedded steel sheet, embedded steel sheet is in the barricade with steel sheet anchor steel bar welding, embedded steel sheet's longitudinal separation with preliminary bracing's longitudinal separation is the same, embedded steel sheet size slightly is greater than the steel backing plate size, embedded steel sheet and steel backing plate welding.
Further, the first connection face and the second of barricade are connected the face with secondary lining's hookup position department buries into the reinforcing bar connector, the model of reinforcing bar connector with main muscle model phase-match in the secondary lining, the longitudinal separation distance of reinforcing bar connector with the longitudinal separation distance of main muscle is the same, one side of reinforcing bar connector is connected main muscle, and the opposite side is connected and is buried connector anchor reinforcing bar in the barricade.
Furthermore, the first connecting surface and the second connecting surface of the retaining wall are respectively provided with a water stop steel plate and a water swelling water stop strip in water at the connecting position of the secondary lining.
Furthermore, a longitudinal drain pipe is arranged at the joint of the retaining wall and the top wall of the opening, holes are formed in the periphery of the longitudinal drain pipe, so that underground water can permeate conveniently, the longitudinal drain pipe is connected with one end of a transverse drain pipe embedded in the retaining wall, and geotextile and a reverse filter layer are wrapped on the outer side of the longitudinal drain pipe; transverse drainage pipe arranges according to a determining deviation, the barricade deviates from one side in tunnel is for the side of making up the air, transverse drainage pipe's the other end accesss to the bottom of barricade side of making the air is close to the road surface department of cutting.
Furthermore, the middle upper part of the retaining wall is provided with a row of circular holes for tunnel lighting and ventilation at a certain interval along the longitudinal direction of the road.
Furthermore, the vertical side of the retaining wall is made into a certain slope, and the bottom of the retaining wall is provided with a wall toe.
Compared with the prior art, the utility model, beneficial effect lies in:
the utility model provides a road structure of a half roadbed and a half tunnel, which comprises a tunnel, a retaining wall and a cutting; the cutting, the retaining wall and the tunnel are sequentially arranged along the current situation of the uphill direction of the ground, so that the design and construction problems of the road at the edge of the steep slope are solved, the environmental effect is good, the safety of the operation stage is high, and the operation cost is low; the utility model discloses a construction method, the earthwork volume of engineering is little, has saved the construction adult, has improved the efficiency of construction, is worth promoting on a large scale.
Drawings
Fig. 1 is a schematic cross-sectional view of a road structure of a half-width roadbed and half-width tunnel according to an embodiment of the present invention;
FIG. 2 is a schematic cross-sectional view of a retaining wall structure of the roadway structure of FIG. 1;
fig. 3 is a schematic cross-sectional view of a first stage of road structure construction provided by an embodiment of the present invention;
fig. 4 is a schematic cross-sectional view of a second stage of road structure construction provided by the embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; furthermore, unless expressly stated or limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, as they may be fixedly connected, detachably connected, or integrally connected, for example; the two components can be directly connected or indirectly connected through an intermediate medium, and the two components can be communicated with each other. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1 and 2, a preferred embodiment of the present invention is shown, which is a road structure of a half roadbed and a half tunnel, including a tunnel 1, a retaining wall 2 and a cutting 3. The cutting 3, the retaining wall 2 and the tunnel 1 are sequentially arranged along the uphill direction of the current ground 200.
The tunnel 1 has an opening extending longitudinally along the tunnel 1 on the side adjacent to the retaining wall 2, the retaining wall 2 closes the opening and is connected with the top wall 11 and the bottom wall 12 of the opening, and the top of the retaining wall 2 extends upwards to form a wall top 20 higher than the opening. In this embodiment, the cross-section of the tunnel 1 is "C" shaped.
Specifically, the tunnel 1 includes a primary support, a waterproof layer 13, and a secondary lining, which are provided from the outside to the inside. The primary support includes system anchor rods, shotcrete and a steel arch 14. The steel arch 14 is respectively provided with steel backing plates 15 at the top wall 11 and the bottom wall 12 of the opening, and the steel arch 14 is welded with the steel backing plates 15; the secondary lining adopts a reinforced concrete structure.
The retaining wall 2 is a gravity type retaining wall with a reinforced concrete structure, one side of the retaining wall 2 close to the tunnel 1 is arranged in a broken line manner, two first connecting surfaces 21 and two second connecting surfaces 22 which are respectively connected with the top wall 11 and the bottom wall 12 of the opening of the tunnel 1 are reserved in the retaining wall 2, the first connecting surfaces 21 are perpendicular to the axis of the top wall 11 of the opening, and the second connecting surfaces 22 are perpendicular to the axis of the bottom wall 12 of the opening; the widths of the first joint face 21 and the second joint face 22 are the sum of the thicknesses of the primary support and the secondary lining.
The first connecting surface 21 and the second connecting surface 22 of the retaining wall 2 are both embedded with embedded steel plates 4 at the connecting positions with the primary support, the embedded steel plates 4 are welded with steel plate anchoring steel bars 5 in the retaining wall 2, the longitudinal distance between the embedded steel plates 4 is the same as that between the primary support, the size of the embedded steel plates 4 is slightly larger than that of the steel backing plate 15, and the embedded steel plates 4 are welded with the steel backing plate 15.
The first connecting surface 21 and the second connecting surface 22 of the retaining wall 2 are embedded with reinforcing bar connectors 6 at the connecting positions with the secondary lining, the type of the reinforcing bar connectors 6 is matched with the type of the main bars 16 in the secondary lining, the longitudinal distance of the reinforcing bar connectors 6 is the same as the longitudinal distance of the main bars 16, one side of each reinforcing bar connector 6 is connected with the main bar 16, and the other side of each reinforcing bar connector 6 is connected with a connector anchoring reinforcing bar 23 embedded in the retaining wall 2.
The first connection surface 21 and the second connection surface 22 of the retaining wall 2 are respectively provided with a water stop steel plate 7 and a water swelling water stop bar 8 at the connection position with the secondary lining, and preferably, the water stop steel plate 7 is a stainless steel plate or a galvanized steel plate.
A longitudinal drain pipe 9 is arranged at the joint of the retaining wall 2 and the top wall 11 of the opening, holes are drilled on the periphery of the longitudinal drain pipe 9 to facilitate the infiltration of underground water, the longitudinal drain pipe 9 is connected with one end of a transverse drain pipe 24 embedded in the retaining wall 2, and geotextile and a reverse filter layer are wrapped outside the longitudinal drain pipe 9; transverse drainage pipe 24 arranges according to the determining deviation, and one side that barricade 2 deviates from tunnel 1 is for the side of making up the sky, and transverse drainage pipe 24's the other end leads to barricade 2 and just makes up the bottom of the side and is close to road surface 31 department of cutting 3, and further, barricade 2 is vertical to make certain slope in the side of making up to set up wall toe 25 in the bottom.
A row of circular holes 26 are arranged at the middle upper part of the retaining wall 2 along the longitudinal direction of the road structure at certain intervals for lighting and ventilating the tunnel.
The embodiment also provides a construction method of the road structure, which comprises the following steps:
s1, please refer to FIG. 3, excavating a temporary slope from top to bottom on the outer side of the retaining wall 2 to the bottom of the retaining wall 2, and synchronously constructing a slope protection structure; preferably, the slope surface protection structure is formed by spraying a concrete protective surface b through a soil anchor rod a and a steel bar net;
s2, constructing a retaining wall 2, embedding an embedded steel plate 4, a steel bar connector 6, a water stop steel plate 7 and a transverse drain pipe 24;
s3, constructing the road surface 31 structure on the cutting 3 side;
s4, constructing a longitudinal drain pipe 9 and a reverse filtering layer at the joint of the retaining wall 2 and the tunnel 1, and backfilling and covering soil c on the soil facing surface of the retaining wall 2 to the original ground elevation;
s5, please refer to fig. 4, constructing the advance support structure of the tunnel 1;
s6, excavating the tunnel 1;
s7, performing primary support of the construction tunnel 1, and welding steel backing plates 15 of the steel arch center 14 at the top wall 11 and the bottom wall 12 of the opening with the embedded steel plates 4 at the corresponding positions of the retaining wall 2;
s8, constructing a waterproof layer 13 of the tunnel 1;
s9, chiseling concrete at the joint of the retaining wall 2 and the tunnel, painting cement-based permeable crystalline waterproof paint and installing a water-swelling water stop strip arranged at the joint;
and S10, constructing a secondary lining of the tunnel, wherein the main reinforcement 16 of the secondary lining is connected with the reinforcement connectors 6 at the corresponding positions of the top wall 11 and the bottom wall 12 of the opening and the retaining wall 2.
In summary, the road structure of the half roadbed and half tunnel provided by the embodiment includes a tunnel 1, a retaining wall 2 and a cutting 3; cutting 3, barricade 2 and tunnel 1 arrange along present situation ground uphill direction in proper order, have solved the road design construction problem that is located the abrupt slope edge, and the environmental effect is good, and operation stage security is high, and the operation cost is low.
The road structure that this embodiment provided, the earthwork engineering volume is little, has saved the construction adult, has improved the efficiency of construction, is worth promoting on a large scale.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A road structure of a half roadbed and a half tunnel is characterized by comprising a tunnel, a retaining wall and a cutting; the cutting, the retaining wall and the tunnel are sequentially arranged along the current ground uphill direction; one side of the tunnel, which is close to the retaining wall, is provided with an opening which extends along the longitudinal direction of the tunnel; the retaining wall blocks the opening and is connected with the top wall and the bottom wall of the opening; and the top of the retaining wall extends upwards to form a wall top higher than the opening position.
2. The structure of a roadbed half tunnel of claim 1, wherein the cross section of the tunnel is in the shape of a "C".
3. The road structure of a half roadbed and half tunnel according to claim 1 or 2, wherein the tunnel comprises a primary support, a waterproof layer and a secondary lining which are arranged from outside to inside; the primary support comprises a system anchor rod, sprayed concrete and a profile steel arch, wherein the profile steel arch is respectively provided with a steel backing plate at the top wall and the bottom wall of the opening and is welded with the steel backing plate; the secondary lining adopts a reinforced concrete structure.
4. The road structure of a half roadbed and half tunnel according to claim 3, wherein the retaining wall is a gravity retaining wall of a reinforced concrete structure, one side of the retaining wall close to the tunnel is arranged in a broken line, the retaining wall is reserved with a first connecting surface and a second connecting surface which are respectively connected with the top wall and the bottom wall of the tunnel opening, the first connecting surface is perpendicular to the axis of the top wall of the opening, and the second connecting surface is perpendicular to the axis of the bottom wall of the opening; the width of the first connecting surface and the second connecting surface is the sum of the thickness of the primary support and the thickness of the secondary lining.
5. The road structure of a half roadbed and a half tunnel according to claim 4, wherein the first connecting surface and the second connecting surface of the retaining wall are embedded with embedded steel plates at the connecting positions of the preliminary bracing, the embedded steel plates are welded with steel plate anchoring steel bars in the retaining wall, the longitudinal distance between the embedded steel plates is the same as that between the preliminary bracing, the size of the embedded steel plates is slightly larger than that of the steel backing plate, and the embedded steel plates are welded with the steel backing plate.
6. The road structure of a half roadbed and half tunnel as claimed in claim 5, wherein the first connecting surface and the second connecting surface of the retaining wall are embedded with reinforcing bar connectors at the connecting positions with the secondary lining, the types of the reinforcing bar connectors are matched with the types of the main bars in the secondary lining, the longitudinal distance of the reinforcing bar connectors is the same as the longitudinal distance of the main bars, one side of the reinforcing bar connector is connected with the main bars, and the other side of the reinforcing bar connector is connected with the connector anchoring bars embedded in the retaining wall.
7. The road structure of a roadbed half tunnel according to claim 6, wherein the first connecting surface and the second connecting surface of the retaining wall are respectively provided with a water stop steel plate and a water-swelling water stop strip at the connecting position with the secondary lining.
8. The road structure of a subgrade and a tunnel in half width according to claim 7, wherein the junction of the retaining wall and the top wall of the opening is provided with a longitudinal drainage pipe, the periphery of the longitudinal drainage pipe is perforated to facilitate the infiltration of groundwater, the longitudinal drainage pipe is connected with one end of a transverse drainage pipe embedded in the retaining wall, and the outer side of the longitudinal drainage pipe is wrapped with geotextile and a reverse filter layer; transverse drainage pipe arranges according to a determining deviation, the barricade deviates from one side in tunnel is for the side of making up the air, transverse drainage pipe's the other end accesss to the bottom of barricade side of making the air is close to the road surface department of cutting.
9. The structure of a roadbed, tunnel, or the like in the half width of a road according to claim 8, wherein a row of circular holes for lighting and ventilation of the tunnel are formed at a predetermined interval in the middle-upper portion of the retaining wall in the longitudinal direction of the structure.
10. The road structure of a half roadbed and half tunnel as claimed in claim 8, wherein the free side of said retaining wall is vertically made into a slope, and the bottom is provided with a toe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020016565.XU CN211948539U (en) | 2020-01-02 | 2020-01-02 | Road structure of half roadbed and half tunnel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020016565.XU CN211948539U (en) | 2020-01-02 | 2020-01-02 | Road structure of half roadbed and half tunnel |
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| CN211948539U true CN211948539U (en) | 2020-11-17 |
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| CN202020016565.XU Active CN211948539U (en) | 2020-01-02 | 2020-01-02 | Road structure of half roadbed and half tunnel |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119231A (en) * | 2020-01-02 | 2020-05-08 | 深圳市综合交通设计研究院有限公司 | Road structure of half roadbed and half tunnel and construction method thereof |
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- 2020-01-02 CN CN202020016565.XU patent/CN211948539U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111119231A (en) * | 2020-01-02 | 2020-05-08 | 深圳市综合交通设计研究院有限公司 | Road structure of half roadbed and half tunnel and construction method thereof |
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Address after: Unit 1205, block C, building 1, Xinghe legend Garden Phase III, Longtang community, Minzhi street, Longhua District, Shenzhen City, Guangdong Province Patentee after: Shenzhen comprehensive transportation and municipal engineering design and Research Institute Co.,Ltd. Address before: 518000 No.9 Tianbei 4th Road, Luohu District, Shenzhen City, Guangdong Province Patentee before: SHENZHEN TRANSPORTATION DESIGN & RESEARCH INSTITUTE Co.,Ltd. |
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