CN204941565U - A kind of novel tunnel inverted arch structure - Google Patents
A kind of novel tunnel inverted arch structure Download PDFInfo
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- CN204941565U CN204941565U CN201520490507.XU CN201520490507U CN204941565U CN 204941565 U CN204941565 U CN 204941565U CN 201520490507 U CN201520490507 U CN 201520490507U CN 204941565 U CN204941565 U CN 204941565U
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Abstract
The utility model discloses a kind of novel tunnel inverted arch structure, comprise sprayed mortar, sprayed mortar is middle part arc-shaped recess shape, and i iron bow member is layed in above sprayed mortar, and the two ends of i iron bow member are fixedly connected with lock foot anchoring stock respectively; The top of i iron bow member is provided with the main muscle of first floor and the main muscle of the second layer successively, between the main muscle of first floor and the main muscle of the second layer, be fixedly connected with longitudinal dowel and stirrup, the main muscle of first floor, the main muscle of the second layer, longitudinal dowel, stirrup jointly form mould and build reinforced concrete inverted arch; Mould builds filler piece stone concrete above reinforced concrete inverted arch, and sheet stone concrete arranges i iron, the two ends difference correspondence of i iron and the two ends welding edges of i iron bow member; Concrete base layer and road surface structare layer is laid successively above i iron.The utility model mechanical property is better, and it effectively improves the horizontal bearing capacity of inverted arch structure by arranging lock foot anchoring stock, effectively control the distortion in inverted arch structure level direction.
Description
Technical field
The utility model relates to tunnels and underground engineering field, particularly relates to a kind of novel tunnel inverted arch structure.
Background technology
In recent years, the iterative method of the constantly perfect and strategy to develop western regions of building along with highway in China net, speedway strides forward to area, high and steep mountains gradually, the tunnel passing through the special geologic conditions such as high-ground stress, weak broken wall rock, expansive soil, Loess Layer gets more and more, and brings great challenge to China's Tunnel Design, construction, operation, maintenance.High-ground stress surrounding rock tunnel due to its surrounding rock structure stress higher, in work progress, stress release rate is comparatively large, and lateral extrusion distortion is serious, if inverted arch structural shape is unreasonable, the disease such as Lining cracks, substrate unstability very easily occurs; On the other hand, weak broken wall rock, Loess Layer self-bearing ability are poor, local water content is higher, very easily there is wall rock destabilization, meanwhile, normal containing dilatant mineral composition in soft rock, expansive soil stratum, under chance water condition, there is turgescence effect, very easily cause the disease such as tunnel lining cracking, substrate unstability, the safety of serious threat constructing tunnel and operation.
For the construction of tunnel under above-mentioned special geologic condition, traditional inverted arch structure adopts structural shapes such as laying steel arch-shelf, concreting, backfill sheet stone concrete, and improves concrete early stage rigidity, emphasizes the promptness of supporting; But this inverted arch structural entity intensity is not high, cannot bear larger horizontal compression, very easily causes the disease such as Lining cracks, substrate unstability, can not adapt to the development of modern tunnel construction technology.
Therefore, for problems of the prior art, need badly and provide a kind of novel tunnel inverted arch structural shape to seem particularly important.
Utility model content
For the weak point that prior art exists, the purpose of this utility model is to provide a kind of novel tunnel inverted arch structure that can improve Tunnel Base resistance to overturning.
The purpose of this utility model is achieved through the following technical solutions:
A kind of novel tunnel inverted arch structure, comprise sprayed mortar, i iron bow member, the main muscle of first floor, the main muscle of the second layer, longitudinal dowel, stirrup, sheet stone concrete, i iron, concrete base layer and road surface structare layer, described sprayed mortar is middle part arc-shaped recess shape, described i iron bow member is layed in above sprayed mortar, and the two ends of described i iron bow member are fixedly connected with lock foot anchoring stock respectively; The top of described i iron bow member is provided with the main muscle of first floor and the main muscle of the second layer successively, between the main muscle of described first floor and the main muscle of the second layer, be fixedly connected with several longitudinal dowels and several stirrups, the main muscle of described first floor, the main muscle of the second layer, all longitudinal dowels, all stirrups jointly form mould and build reinforced concrete inverted arch; Described mould builds filler piece stone concrete above reinforced concrete inverted arch, and described stone concrete arranges described i iron, end, the two ends difference correspondence of i iron and the two ends welding edges of i iron bow member; Described concrete base layer and road surface structare layer is laid successively above described i iron.
In order to realize the utility model better, described lock foot anchoring stock is hollow grouting anchor, and its length is 4m, and diameter is preferably 28mm; The end, two ends of described i iron bow member is provided with two lock foot anchoring stocks respectively.
Further preferred technical scheme is: the main muscle of described first floor and the main muscle of the second layer two-layer between spacing be 50cm, the main muscle of first floor, the main muscle of the second layer are fixedly connected with by longitudinal dowel, stirrup and fluid concrete forms thickness is jointly that the mould of 60cm builds reinforced concrete inverted arch.
The main muscle of the preferred first floor of the utility model and the second layer main muscle structure technology scheme are: the main muscle of described first floor and the main muscle of the second layer all adopt the manufacture of Φ 22 reinforcing bar to form.
As preferably, described i iron is 50cm along the spacing in direction, tunnel.
As preferably, the thickness of described sprayed mortar is 25cm.
The utility model preferred slabstone concrete technology scheme is: described stone concrete is formed by cement, sand, rubble, slabstone mixed preparing, and wherein slabstone content is between 20% ~ 30%, and the concrete thickness of described slabstone is greater than 15cm.
The utility model comparatively prior art is compared, and has the following advantages and beneficial effect:
(1) construction sequence of the present utility model is simple, and required cost is lower, workable, and mechanical property is better, and it effectively improves the horizontal bearing capacity of inverted arch structure by arranging lock foot anchoring stock, effectively control the distortion in inverted arch structure level direction.
(2) the utility model by arranging i iron on backfill sheet stone concrete, its two ends are welded with i iron bow member, thus greatly improve the resistance to overturning of tunnel invert structure, and enhance the intensity of concrete base layer, effectively prevent heave of base disease.
(3) the utility model can be applicable in high-ground stress, weak broken wall rock, expansive soil, Loess Layer tunnel preferably, effectively prevent the generation of the diseases such as its Lining cracks, substrate unstability, local collapse, there is good economic benefit and social benefit.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the reinforcing bar laying schematic diagram that mould builds reinforced concrete inverted arch.
Wherein, the name corresponding to the Reference numeral in accompanying drawing is called:
1-sprayed mortar, 2-i iron bow member, 3-lock foot anchoring stock, the main muscle of 4-first floor, the main muscle of the 5-second layer, the longitudinal dowel of 6-, 7-stirrup, 8-sheet stone concrete, 9-i iron, 10-concrete base layer, 11-road surface structare layer.
Detailed description of the invention
Below in conjunction with embodiment, the utility model is described in further detail:
Embodiment
As shown in Fig. 1 ~ Fig. 2, a kind of novel tunnel inverted arch structure, comprise sprayed mortar 1, i iron bow member 2, the main muscle 4 of first floor, the main muscle 5 of the second layer, longitudinal dowel 6, stirrup 7, slabstone concrete eight, i iron 9, concrete base layer 10 and road surface structare layer 11, sprayed mortar 1 is that middle part arc-shaped recess shape is (in detail see Fig. 1, namely the two ends of sprayed mortar 1 are in same level, the intermediate recess of sprayed mortar 1 forms an arc dell), the preferred sprayed mortar 1 of the present embodiment is C25 sprayed mortar, i iron bow member 2 is layed in above sprayed mortar 1, the two ends of i iron bow member 2 are fixedly connected with lock foot anchoring stock 3 respectively, the preferred i iron bow member 2 of the present embodiment is I22b type i iron bow member, the preferred technical scheme of the present embodiment is: described lock foot anchoring stock 3 adopts welding manner to fix with i iron bow member 2.I iron bow member 2 is preferably identical with sprayed mortar 1 global shape, also in middle part arc-shaped recess shape.
As shown in Figure 1, the top of i iron bow member 2 is provided with the main muscle of first floor 4 and the main muscle 5 of the second layer successively, several longitudinal dowel 6 and several stirrups 7 are fixedly connected with between the main muscle of first floor 4 and the main muscle of the second layer 5, the main muscle of first floor 4, the main muscle of the second layer 5, all longitudinal dowels 6, all stirrups 7 jointly form mould and build reinforced concrete inverted arch, and mould is built reinforced concrete inverted arch and built reinforced concrete inverted arch also known as C25 mould.The main muscle of first floor 4 of the present embodiment, the main muscle of the second layer 5, longitudinal dowel 6, stirrup 7 are by bar material manufacture.Mould builds filler piece stone concrete 8 above reinforced concrete inverted arch, the preferred slabstone concrete eight of the present embodiment is C15 sheet stone concrete, slabstone concrete eight is arranged i iron 9, the preferred i iron 9 of the present embodiment is I22a type i iron, end, the two ends difference correspondence of i iron 9 and the two ends welding edges of i iron bow member 2; Concrete base layer 10 and road surface structare layer 11 is laid successively above i iron 9.
According to a kind of preferred embodiment of the present utility model, lock foot anchoring stock 3 is hollow grouting anchor, and its length is 4m, and diameter is preferably 28mm; The end, two ends of i iron bow member 2 is provided with two lock foot anchoring stocks 3 respectively.Lock foot anchoring stock 3 is arranged on the two ends of i iron bow member 2, and often hold each two lock foot anchoring stocks, the end of lock foot anchoring stock welds with i iron bow member 2.
According to a kind of preferred embodiment of the present utility model, the main muscle of first floor 4 and the main muscle of the second layer 5 two-layer between spacing be 50cm, the main muscle of first floor 4, the main muscle of the second layer 5 are fixedly connected with by longitudinal dowel 6, stirrup 7 and fluid concrete forms thickness is jointly that the mould of 60cm builds reinforced concrete inverted arch.
According to a kind of preferred embodiment of the present utility model, the main muscle of first floor 4 and the main muscle 5 of the second layer all adopt the manufacture of Φ 22 reinforcing bar to form.
According to a kind of preferred embodiment of the present utility model, i iron 9 is 50cm along the spacing in direction, tunnel, and i iron 9 is arranged on slabstone concrete eight, and i iron 9 two ends are welded with type i iron bow member 2.
According to a kind of preferred embodiment of the present utility model, the thickness of sprayed mortar 1 is 25cm.
According to a kind of preferred embodiment of the present utility model, slabstone concrete eight is formed by material mixed preparing such as cement, sand, rubble, slabstones, and wherein slabstone content is between 20% ~ 30%, and the thickness of slabstone concrete eight is greater than 15cm.
Construction sequence of the present utility model is simple, and required cost is lower, workable, and mechanical property is better, and it effectively improves the horizontal bearing capacity of inverted arch structure by arranging lock foot anchoring stock, effectively control the distortion in inverted arch structure level direction; Simultaneously, the utility model by arranging I22a type i iron on backfill C15 sheet stone concrete, its two ends are welded with I22b type i iron bow member, thus greatly improve the resistance to overturning of tunnel invert structure, and enhance the intensity of C20 concrete base layer, effectively prevent heave of base disease.Therefore, the utility model can be applicable to, in high-ground stress, weak broken wall rock, expansive soil, Loess Layer tunnel, effectively prevent the generation of the diseases such as its Lining cracks, substrate unstability, local collapse, have good economic benefit and social benefit preferably.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; all do within spirit of the present utility model and principle any amendment, equivalent to replace and improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a novel tunnel inverted arch structure, it is characterized in that: comprise sprayed mortar (1), i iron bow member (2), the main muscle of first floor (4), the main muscle of the second layer (5), longitudinal dowel (6), stirrup (7), sheet stone concrete (8), i iron (9), concrete base layer (10) and road surface structare layer (11), described sprayed mortar (1) is in middle part arc-shaped recess shape, described i iron bow member (2) is layed in sprayed mortar (1) top, and the two ends of described i iron bow member (2) are fixedly connected with lock foot anchoring stock (3) respectively; The top of described i iron bow member (2) is provided with the main muscle of first floor (4) and the main muscle of the second layer (5) successively, between the main muscle of described first floor (4) and the main muscle of the second layer (5), be fixedly connected with several longitudinal dowels (6) and several stirrups (7), the main muscle of described first floor (4), the main muscle of the second layer (5), all longitudinal dowels (6), all stirrups (7) jointly form mould and build reinforced concrete inverted arch; Described mould builds filler piece stone concrete (8) above reinforced concrete inverted arch, and described stone concrete (8) arranges described i iron (9), end, the two ends difference correspondence of i iron (9) and the two ends welding edges of i iron bow member (2); Described i iron (9) top lays described concrete base layer (10) and road surface structare layer (11) successively.
2., according to a kind of novel tunnel inverted arch structure according to claim 1, it is characterized in that: described lock foot anchoring stock (3) is hollow grouting anchor, and its length is 4m, and diameter is preferably 28mm; The end, two ends of described i iron bow member (2) is provided with two lock foot anchoring stocks (3) respectively.
3. according to a kind of novel tunnel inverted arch structure according to claim 1, it is characterized in that: the main muscle of described first floor (4) and the main muscle of the second layer (5) two-layer between spacing be 50cm, the main muscle of first floor (4), the main muscle of the second layer (5) are fixedly connected with by longitudinal dowel (6), stirrup (7) and fluid concrete forms thickness is jointly that the mould of 60cm builds reinforced concrete inverted arch.
4. according to a kind of novel tunnel inverted arch structure according to claim 3, it is characterized in that: the main muscle of described first floor (4) and the main muscle of the second layer (5) all adopt the manufacture of Φ 22 reinforcing bar to form.
5. according to a kind of novel tunnel inverted arch structure according to claim 1, it is characterized in that: described i iron (9) is 50cm along the spacing in direction, tunnel.
6. according to a kind of novel tunnel inverted arch structure according to claim 1, it is characterized in that: the thickness of described sprayed mortar (1) is 25cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490507.XU CN204941565U (en) | 2015-07-08 | 2015-07-08 | A kind of novel tunnel inverted arch structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520490507.XU CN204941565U (en) | 2015-07-08 | 2015-07-08 | A kind of novel tunnel inverted arch structure |
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| CN204941565U true CN204941565U (en) | 2016-01-06 |
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| CN201520490507.XU Expired - Fee Related CN204941565U (en) | 2015-07-08 | 2015-07-08 | A kind of novel tunnel inverted arch structure |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761838A (en) * | 2017-02-20 | 2017-05-31 | 长安大学 | Tunnel Second Lining bow member unit and its arch frame structure and erection method that are constituted |
| CN109083660A (en) * | 2018-08-22 | 2018-12-25 | 山东建筑大学 | Soft Rock Roadway (tunnel) road pucking based on armored concrete bottom beam administers supporting construction and method |
| CN111502706A (en) * | 2020-03-26 | 2020-08-07 | 中铁十八局集团有限公司 | Tunnel inverted arch structure and method suitable for bottom heave deformation control |
| CN111636899A (en) * | 2020-04-20 | 2020-09-08 | 中铁十八局集团有限公司 | Tunnel inverted arch structure for preventing bottom bulging and construction process |
-
2015
- 2015-07-08 CN CN201520490507.XU patent/CN204941565U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106761838A (en) * | 2017-02-20 | 2017-05-31 | 长安大学 | Tunnel Second Lining bow member unit and its arch frame structure and erection method that are constituted |
| CN109083660A (en) * | 2018-08-22 | 2018-12-25 | 山东建筑大学 | Soft Rock Roadway (tunnel) road pucking based on armored concrete bottom beam administers supporting construction and method |
| CN111502706A (en) * | 2020-03-26 | 2020-08-07 | 中铁十八局集团有限公司 | Tunnel inverted arch structure and method suitable for bottom heave deformation control |
| CN111502706B (en) * | 2020-03-26 | 2022-04-12 | 中铁十八局集团有限公司 | Tunnel inverted arch structure and method suitable for bottom heave deformation control |
| CN111636899A (en) * | 2020-04-20 | 2020-09-08 | 中铁十八局集团有限公司 | Tunnel inverted arch structure for preventing bottom bulging and construction process |
| CN111636899B (en) * | 2020-04-20 | 2021-12-28 | 中铁十八局集团有限公司 | Tunnel inverted arch structure for preventing bottom bulging and construction process |
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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: 20160106 Termination date: 20190708 |
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| CF01 | Termination of patent right due to non-payment of annual fee |