CN204402498U - A kind of multiple-arch tunnel structure for bias voltage landform - Google Patents
A kind of multiple-arch tunnel structure for bias voltage landform Download PDFInfo
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- CN204402498U CN204402498U CN201520015630.6U CN201520015630U CN204402498U CN 204402498 U CN204402498 U CN 204402498U CN 201520015630 U CN201520015630 U CN 201520015630U CN 204402498 U CN204402498 U CN 204402498U
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- landform
- preliminary bracing
- tunnel
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- arc surface
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Abstract
The utility model discloses a kind of multiple-arch tunnel structure for bias voltage landform, comprise landform pressure larger side Tunnel and landform pressure smaller side Tunnel, and mid-board, the inwall of landform pressure larger side Tunnel is provided with the first preliminary bracing layer and the first inner liner; The inwall of landform pressure smaller side Tunnel is provided with the second preliminary bracing layer and the second inner liner; Mid-board comprises the first arc surface and the second arc surface near the face, side of landform pressure larger side Tunnel, and the junction of the first arc surface and the second arc surface forms the first first Zhi Zhidian; Mid-board comprises three-arc face and the 4th arc surface near the face, side of landform pressure smaller side Tunnel, and the junction of three-arc face and the 4th arc surface forms the second first Zhi Zhidian; The height of the second first Zhi Zhidian is greater than the height of the first first Zhi Zhidian.This multiple-arch tunnel structure effectively can improve the stressed of Middle Wall of Multi-Arch Highway Tunnel under bias voltage landform, then ensures the stable of multiple-arch tunnel structure under bias voltage landform.
Description
Technical field
The utility model belongs to multiple-arch tunnel technical field, is specifically related to a kind of multiple-arch tunnel structure for bias voltage landform.
Background technology
Along with the development of highway in China communication, engineering infrastructure also progressively strides forward to mountain area, and tunnel proportion in the construction of a road is also increasing.For the highway construction that wiring space is limited, in order to avoid building of small-clear-distance tunnel, build multiple-arch tunnel has huge advantage on space is saved.General multiple-arch tunnel is shorter, mostly passes from the side on mountain, bias-pressure phenomenon ubiquity.Middle Wall of Multi-Arch Highway Tunnel, as the topmost force structure of multiple-arch tunnel, is often subject to the unbalanced thrust in both sides under bias voltage landform, and unbalanced thrust can apply an overturning moment to mid-board, causes tremendous influence to the Stability Analysis of Structures of mid-board.
At present, people often adopt be conducive to the stressed construction method of mid-board reduce construction in bias voltage on the impact of mid-board, the impact of rear landform bias voltage on mid-board is built up for tunnel and rarely has consideration.Or build the concrete guard wall of large volume in the less side of landform pressure, cost intensive.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency of the prior art, provides a kind of multiple-arch tunnel structure for bias voltage landform.This multiple-arch tunnel structure structure is simple, effectively can improve bias voltage landform under the mid-board stressing conditions of multiple-arch tunnel, then ensure the stable of multiple-arch tunnel structure under bias voltage landform.
For achieving the above object, the technical solution adopted in the utility model is: a kind of multiple-arch tunnel structure for bias voltage landform, it is characterized in that: comprise landform pressure larger side Tunnel and landform pressure smaller side Tunnel, and for connecting the mid-board of described landform pressure larger side Tunnel and landform pressure smaller side Tunnel, the inwall of described landform pressure larger side Tunnel is provided with for carrying out the first preliminary bracing layer of supporting and the first inner liner for reinforcing described first preliminary bracing layer to the country rock of described landform pressure larger side Tunnel, described first inner liner is closed ring, described first preliminary bracing layer is connected with the first inner liner, the inwall of described landform pressure smaller side Tunnel is provided with for carrying out the second preliminary bracing layer of supporting and the second inner liner for reinforcing described second preliminary bracing layer to the country rock of described landform pressure smaller side Tunnel, described second inner liner is closed ring, and described second preliminary bracing layer is connected with the second inner liner, described mid-board comprise near the face, side of landform pressure larger side Tunnel for contact with the first preliminary bracing aspect the first arc surface of coordinating with for contacting with the first liner aspect the second arc surface coordinated, described first arc surface is positioned at the top of the second arc surface, and the junction of described first arc surface and the second arc surface forms the first first Zhi Zhidian being used for supporting one end arch springing of the first preliminary bracing layer, described mid-board comprise near the face, side of landform pressure smaller side Tunnel for contact with the second preliminary bracing aspect the three-arc face that coordinates with for contacting the 4th arc surface coordinated with the second liner aspect, described three-arc face is positioned at the top of the 4th arc surface, and the junction of described three-arc face and the 4th arc surface forms the second first Zhi Zhidian being used for supporting one end arch springing of the second preliminary bracing layer, the height of the described second first Zhi Zhidian is greater than the height of the first first Zhi Zhidian.
Above-mentioned a kind of multiple-arch tunnel structure for bias voltage landform, is characterized in that: the thickness of described first preliminary bracing layer is greater than the thickness of the second preliminary bracing layer.
Above-mentioned a kind of multiple-arch tunnel structure for bias voltage landform, is characterized in that: the thickness of described first preliminary bracing layer is 30mm, and the thickness of described second preliminary bracing layer is 25mm.
Above-mentioned a kind of multiple-arch tunnel structure for bias voltage landform, is characterized in that: the upper surface of described mid-board is the circular arc end face upwards arched upward.
The utility model compared with prior art has the following advantages:
1, structure of the present utility model is simple, rationally novel in design.
2, the utility model is set to remove Zhi Zhidian lower than second of the less side of landform pressure by just propping up position of the fulcrum by first of larger for landform pressure side, to reduce the first preliminary bracing layer of the larger side of bias pressure to the moment of flexure at the bottom of mid-board wall, the arm of force of the second preliminary bracing layer to mid-board horizontal thrust of the less side of contrary bias pressure is longer, then moment is larger, so just can reduce overturning moment mid-board caused with balanced bias landform, effectively improve the mid-board stressing conditions of multiple-arch tunnel under bias voltage landform.
3, the utility model is by being set to the thickness of the first preliminary bracing layer the thickness being greater than the second preliminary bracing layer, for following consideration: because the first preliminary bracing layer is positioned at landform pressure larger side Tunnel, second preliminary bracing layer is positioned at landform pressure smaller side Tunnel, conventional design conventionally, the thickness of the first preliminary bracing layer should be equal in the thickness of the second preliminary bracing layer, but the landform pressure born due to the second preliminary bracing layer is less, so can suitably reduce its thickness, to save material, and the stress level of the inner liner of both sides can be made as far as possible close.
4, of the present utility model to realize cost low, and result of use is good, is convenient to promote the use of.
In sum, the utility model structure is simple, and rationally novel in design, functional reliability is high, and result of use is good, is convenient to promote the use of.
Below by drawings and Examples, the technical solution of the utility model is described in further detail.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of the utility model mid-board.
Fig. 3 is the annexation schematic diagram of the utility model mid-board and both sides inner liner and preliminary bracing layer.
Description of reference numerals:
1-landform pressure larger side Tunnel; 2-landform pressure smaller side Tunnel;
3-mid-board; 3-1-the first arc surface;
3-2-the second arc surface; 3-3-the first be Zhi Zhidian just;
3-4-the three-arc face; 3-5-the 4th arc surface;
3-6-the second be Zhi Zhidian just; 3-7-circular arc end face;
4-the first preliminary bracing layer; 5-the first inner liner;
6-the second preliminary bracing layer; 7-the second inner liner;
8-country rock.
Detailed description of the invention
A kind of multiple-arch tunnel structure for bias voltage landform as shown in Figure 1, comprise landform pressure larger side Tunnel 1 and landform pressure smaller side Tunnel 2, and for connecting the mid-board 3 of described landform pressure larger side Tunnel 1 and landform pressure smaller side Tunnel 2, the inwall of described landform pressure larger side Tunnel 1 is provided with for carrying out the first preliminary bracing layer 4 of supporting and the first inner liner 5 for reinforcing described first preliminary bracing layer 4 to the country rock 8 of described landform pressure larger side Tunnel 1, described first inner liner 5 is closed ring, described first preliminary bracing layer 4 is connected with the first inner liner 5, the inwall of described landform pressure smaller side Tunnel 2 is provided with for carrying out the second preliminary bracing layer 6 of supporting and the second inner liner 7 for reinforcing described second preliminary bracing layer 6 to the country rock 8 of described landform pressure smaller side Tunnel 2, described second inner liner 7 is closed ring, and described second preliminary bracing layer 6 is connected with the second inner liner 7.Described first inner liner 5 and the second inner liner 7 are secondary lining.
Composition graphs 2, described mid-board 3 comprise near the face, side of landform pressure larger side Tunnel 1 for contact with 4, the first preliminary bracing layer the first arc surface 3-1 of coordinating with for contacting the second arc surface 3-2 coordinated with the first inner liner 5, described first arc surface 3-1 is positioned at the top of the second arc surface 3-2, and the junction of described first arc surface 3-1 and the second arc surface 3-2 forms the first first Zhi Zhidian 3-3 being used for supporting one end arch springing of the first preliminary bracing layer 4; Described mid-board 3 comprise near the face, side of landform pressure smaller side Tunnel 2 for contact with 6, the second preliminary bracing layer the three-arc face 3-4 that coordinates with for contacting the 4th arc surface 3-5 coordinated with the second inner liner 7, described three-arc face 3-4 is positioned at the top of the 4th arc surface 3-5, and the junction of described three-arc face 3-4 and the 4th arc surface 3-5 forms the second first Zhi Zhidian 3-6 being used for supporting one end arch springing of the second preliminary bracing layer 6; The height of the described second first Zhi Zhidian 3-6 is greater than the height of the first first Zhi Zhidian 3-3.
As shown in Figure 3, the thickness d 1 of described first preliminary bracing layer 4 is greater than the thickness d 2 of the second preliminary bracing layer 6.In the present embodiment, preferred way is, the thickness of described first preliminary bracing layer 4 is 30mm, and the thickness of described second preliminary bracing layer 6 is 25mm.
As shown in Figure 2, the upper surface of described mid-board 3 is the circular arc end face 3-7 upwards arched upward.By arranging the circular arc end face 3-7 upwards arched upward, the level making mid-board 3 carry vertical landform pressure is improved.
In the present embodiment, this multiple-arch tunnel structure has improves the stressed function of mid-board 3 under bias voltage landform, the first Zhi Zhidian of mid-board 3 both sides, particularly first position of the fulcrum of the larger side of landform pressure is lower than the less side of landform pressure, to set up the first preliminary bracing layer 4 and the second preliminary bracing layer 6 of the different fulcrum height in both sides, one end arch springing of effective reduction first preliminary bracing layer 4 is to the arm of force of mid-board 3 horizontal thrust, to reduce the moment of flexure of preliminary bracing that is at the bottom of the first preliminary bracing layer 4 pairs of mid-board 3 wall of the larger side of bias pressure, the preliminary bracing i.e. arm of force of the second preliminary bracing layer 6 pairs of mid-board 3 horizontal thrust of the less side of contrary bias pressure is longer, then moment is larger, so just can reduce overturning moment mid-board 3 caused with balanced bias landform, thus Middle Wall of Multi-Arch Highway Tunnel 3 stressed under improving bias voltage landform, then the stable of multiple-arch tunnel structure under bias voltage landform is ensured, and the preliminary bracing that thickness of two sides is different, the stress level of the inner liner of both sides can be made as far as possible close, to saving construction costs, optimizing structure design is significant.
The above; it is only preferred embodiment of the present utility model; not the utility model is imposed any restrictions; every above embodiment is done according to the utility model technical spirit any simple modification, change and equivalent structure transformation, all still belong in the protection domain of technical solutions of the utility model.
Claims (4)
1. the multiple-arch tunnel structure for bias voltage landform, it is characterized in that: comprise landform pressure larger side Tunnel (1) and landform pressure smaller side Tunnel (2), and for connecting the mid-board (3) of described landform pressure larger side Tunnel (1) and landform pressure smaller side Tunnel (2), the inwall of described landform pressure larger side Tunnel (1) is provided with for carrying out the first preliminary bracing layer (4) of supporting and the first inner liner (5) for reinforcing described first preliminary bracing layer (4) to the country rock (8) of described landform pressure larger side Tunnel (1), described first inner liner (5) is closed ring, described first preliminary bracing layer (4) is connected with the first inner liner (5), the inwall of described landform pressure smaller side Tunnel (2) is provided with for carrying out the second preliminary bracing layer (6) of supporting and the second inner liner (7) for reinforcing described second preliminary bracing layer (6) to the country rock (8) of described landform pressure smaller side Tunnel (2), described second inner liner (7) is closed ring, and described second preliminary bracing layer (6) is connected with the second inner liner (7), described mid-board (3) comprise near the face, side of landform pressure larger side Tunnel (1) for contact with the first preliminary bracing layer (4) face the first arc surface (3-1) of coordinating with for contacting the second arc surface (3-2) coordinated with the first inner liner (5) face, described first arc surface (3-1) is positioned at the top of the second arc surface (3-2), described first arc surface (3-1) and the junction of the second arc surface (3-2) form the first first Zhi Zhidian (3-3) being used for supporting one end arch springing of the first preliminary bracing layer (4), described mid-board (3) comprise near the face, side of landform pressure smaller side Tunnel (2) for contact with the second preliminary bracing layer (6) face the three-arc face (3-4) that coordinates with for contacting the 4th arc surface (3-5) coordinated with the second inner liner (7) face, described three-arc face (3-4) is positioned at the top of the 4th arc surface (3-5), described three-arc face (3-4) and the junction of the 4th arc surface (3-5) form the second first Zhi Zhidian (3-6) being used for supporting one end arch springing of the second preliminary bracing layer (6), the height of the described second first Zhi Zhidian (3-6) is greater than the height of the first first Zhi Zhidian (3-3).
2. a kind of multiple-arch tunnel structure for bias voltage landform according to claim 1, is characterized in that: the thickness of described first preliminary bracing layer (4) is greater than the thickness of the second preliminary bracing layer (6).
3. a kind of multiple-arch tunnel structure for bias voltage landform according to claim 2, is characterized in that: the thickness of described first preliminary bracing layer (4) is 30mm, and the thickness of described second preliminary bracing layer (6) is 25mm.
4. a kind of multiple-arch tunnel structure for bias voltage landform according to claim 1, is characterized in that: the upper surface of described mid-board (3) is the circular arc end face (3-7) upwards arched upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520015630.6U CN204402498U (en) | 2015-01-10 | 2015-01-10 | A kind of multiple-arch tunnel structure for bias voltage landform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520015630.6U CN204402498U (en) | 2015-01-10 | 2015-01-10 | A kind of multiple-arch tunnel structure for bias voltage landform |
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| Publication Number | Publication Date |
|---|---|
| CN204402498U true CN204402498U (en) | 2015-06-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520015630.6U Expired - Fee Related CN204402498U (en) | 2015-01-10 | 2015-01-10 | A kind of multiple-arch tunnel structure for bias voltage landform |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572308A (en) * | 2016-02-02 | 2016-05-11 | 长安大学 | Test device for simulating tunnel excavation process |
| CN109882182A (en) * | 2019-01-09 | 2019-06-14 | 中铁七局集团西安铁路工程有限公司 | A kind of extra small clear distance construction method in tunnel |
| CN112012761A (en) * | 2020-07-23 | 2020-12-01 | 湖南省交通规划勘察设计院有限公司 | Construction method of anti-disturbance double-arch tunnel structure |
-
2015
- 2015-01-10 CN CN201520015630.6U patent/CN204402498U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105572308A (en) * | 2016-02-02 | 2016-05-11 | 长安大学 | Test device for simulating tunnel excavation process |
| CN109882182A (en) * | 2019-01-09 | 2019-06-14 | 中铁七局集团西安铁路工程有限公司 | A kind of extra small clear distance construction method in tunnel |
| CN112012761A (en) * | 2020-07-23 | 2020-12-01 | 湖南省交通规划勘察设计院有限公司 | Construction method of anti-disturbance double-arch tunnel structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150617 Termination date: 20160110 |