CN205776410U - A kind of being applicable to suppresses the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel - Google Patents
A kind of being applicable to suppresses the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel Download PDFInfo
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- CN205776410U CN205776410U CN201620721742.8U CN201620721742U CN205776410U CN 205776410 U CN205776410 U CN 205776410U CN 201620721742 U CN201620721742 U CN 201620721742U CN 205776410 U CN205776410 U CN 205776410U
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Abstract
The utility model discloses a kind of being applicable to and suppress the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel, described tunnel bottom structure includes interstitital texture at the bottom of tunnel, mini pile and sleeve valve barrel grouting structure, the miniature stake holes of described mini pile and the sleeve valve barrel grouting span array of sleeve valve barrel grouting structure are laid on interstitital texture protuberance fracture area at the bottom of tunnel, and miniature stake holes and sleeve valve barrel grouting hole are that blossom type is arranged；Described mini pile is embedded by boring, and slip casting in described boring；Described sleeve valve barrel grouting is embedding mini-valve tube in injected hole, injects sleeve valve sleeve shell material, reinforce substrate country rock by mini-valve tube delamination pour slurry in mini-valve tube.This utility model can country rock bottom Strengthening Tunnel, reduce interstitital texture tension at the bottom of tunnel, stop tunnel bottom structure protuberance cracking, and easy construction.
Description
Technical field
This utility model belongs to tunnel structure technical field, particularly relates to one and is applicable to suppress interstitital texture protuberance at the bottom of tunnel
The tunnel bottom structure of cracking.
Background technology
China's Tunnel Engineering great majority are being not provided with splash guard at the bottom of tunnel, also the row of being not provided with leads pervious bed, and lining concrete is straight
Connect the contact of same country rock, to being in below phreatic line or rainfall makes tunnel be in the tunnel of below level of ground water, its inverted arch
The water pressure of certain value can be acted in structure.In the last few years, repaiied on a large scale along with China Express Railway, highway
Building, under effect of water pressure, at the bottom of tunnel, interstitital texture protuberance cracking tunnel defect work example increased.Rhegma at the bottom of tunnel, railway roadbed lifts seriously
Affecting traffic safety, for using the Railway Tunnel of ballastless track bed, its hazardness is the biggest.
For being caused the tunnel defect of the protuberance cracking of interstitital texture at the bottom of tunnel by inverted arch water pressure, lay at the bottom of tunnel splash guard and
It is maximally effective solution that row leads pervious bed, not only can improve the waterproof condition in tunnel, and can alleviate the water of inverted arch
Pressure.But, laying splash guard at the bottom of tunnel, the row of applying leads pervious bed, and construction acquires a certain degree of difficulty, and the most both at home and abroad for this
The mechanism understanding of novel tunnel disease is the most thorough, therefore in structure design of tunnel, does not generally the most set subsoil water row under inverted arch
Guiding systems.From the point of view of domestic and international present Research, current Chinese scholars is little, especially to interstitital texture protuberance cracking research at the bottom of tunnel
The research and analysis to its Cracking Mechanism, so lack to such tunnel defect mature and feasible regulation method.
Under inverted arch not the row of setting lead can cause subsoil water can not effectively along inverted arch and the unimpeded discharge in country rock interface, even if or
Devise exhaust system, but due to some objective factor, cause exhaust system to lose efficacy in construction time or operation phase, tunnel can be made to face upward
Certain water pressure is acted on arch.Lining concrete is higher ranked, and anti-permeability performance is preferable, makes subsoil water be difficult to oozed inverted arch and faced upward
Arch interstitital texture is penetrated in tunnel.Therefore, after tunnel inverted arch closes or after having constructed, along with country rock seepage field tends to steady
Fixed, acting on the water pressure on inverted arch can be gradually increased, ultimately result in inverted arch can by the effect of water pressure of certain value, if
Hydraulic pressure force value suffered by inverted arch exceedes the critical hydraulic pressure force value that inverted arch can bear, then can cause filling at the bottom of tunnel under effect of water pressure knot
The appearance of structure protuberance cracking disease.
For existing tunnel, it is difficult to arrange to lead to the subsoil water under inverted arch remedy in measure, it is necessary to take other work
Inverted arch protuberance cracking disease could effectively be renovated by journey measure, it is ensured that tunnel safety operation.
Utility model content
In order to overcome the deficiency of art methods, the purpose of this utility model is that proposing one is applicable to suppress at the bottom of tunnel
The tunnel bottom structure of interstitital texture protuberance cracking, this structure can reinforce country rock at the bottom of tunnel, reduce tunnel bottom structure tension, stop tunnel bear building-up
Structure protuberance cracking, and easy construction.
For realizing object above, this utility model employing technical scheme is: one is applicable to suppress interstitital texture at the bottom of tunnel grand
Playing the tunnel bottom structure of cracking, described tunnel bottom structure includes interstitital texture at the bottom of tunnel, mini pile and sleeve valve barrel grouting structure, described miniature
The miniature stake holes of stake and the sleeve valve barrel grouting span array of sleeve valve barrel grouting structure are laid in interstitital texture protuberance cracking at the bottom of tunnel
On region, miniature stake holes and sleeve valve barrel grouting hole are that blossom type is arranged；
Described mini pile is embedded in described miniature stake holes, and described mini pile is anchored with substrate country rock by slip casting；Described
Sleeve valve barrel grouting hole embeds mini-valve tube, and in mini-valve tube, injects sleeve valve sleeve shell material, and reinforced by mini-valve tube delamination pour slurry
Substrate country rock.
Further, described miniature stake holes is arranged at the longitudinal midline of interstitital texture at the bottom of described tunnel.
Further, backing plate is set at interstitital texture intersection at the bottom of described mini pile and tunnel；Apply certain pretightning force, will
An entirety formed by mini pile and backing plate makes system entirety stress.
Further, described mini pile is made up of 3 reinforcing bars.
Further, described mini-valve tube includes outer tube, slip casting inner tube, rubber case and rubber ring, described slip casting inner tube, outer
Pipe and rubber case are the most sheathed, and described rubber ring is arranged in slip casting inner tube, and sets on the tube wall of described mini-valve tube
It is equipped with injected hole.
Further, described injected hole spacing is 0.6-1.0m, to efficiently reduce stratum inhomogeneity to slip casting effect
The impact of fruit.
Further, described outer tube uses pvc pipe, and described slip casting inner tube uses galvanized pipe.
The beneficial effect of employing the technical program:
A kind of being applicable to that this utility model is proposed suppresses the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel, uses micro-
Type stake and the regulation of sleeve valve barrel grouting combined method cause interstitital texture protuberance cracking disease at the bottom of tunnel due to inverted arch water pressure, are abundant
Utilize mini pile and two kinds of method features of sleeve valve barrel grouting, by being applied in combination, optimized construction procedure, the most whole
Control interstitital texture protuberance cracking disease problem at the bottom of existing tunnel tunnel；It is a kind of easy construction, substrate country rock can be reinforced, reduces at the bottom of tunnel
Structure tension, stops the fabricated structure of interstitital texture protuberance cracking at the bottom of tunnel.
Mini pile is provided that good uplift effect, stops inverted arch interstitital texture protuberance cracking, and reducing inverted arch institute tension should
Power, solves well owing to inverted arch water pressure causes the tunnel defect of interstitital texture protuberance cracking at the bottom of tunnel, has simple in construction,
Quick construction, system entirety stress, the feature such as its reasonable stress；Can effectively reinforce substrate by sleeve valve barrel grouting, there is structure
Simply, the features such as easy construction, occupied ground is few, consolidation effect is good.
Accompanying drawing explanation
Fig. 1 is that a kind of being applicable to of the present utility model suppresses the structure of the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel to show
It is intended to；
Fig. 2 is that a kind of being applicable to of the present utility model suppresses the side-looking of the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel
Figure；
Fig. 3 is the structural representation of mini-valve tube in this utility model.
Wherein, 1 is interstitital texture at the bottom of tunnel, and 2 is miniature stake holes, and 3 is sleeve valve barrel grouting hole, and 31 is outer tube, in 32 are slip casting
Pipe, 33 is rubber case, and 34 is rubber ring, and 35 is to penetrate slurry hole, and 4 is backing plate.
Detailed description of the invention
In order to make the purpose of utility model, technical scheme and advantage clearer, below in conjunction with the accompanying drawings to this utility model
It is further elaborated.
In the present embodiment, seeing shown in Fig. 1 and Fig. 2, a kind of being applicable to suppresses the tunnel of interstitital texture protuberance cracking at the bottom of tunnel
Bottom structure, described tunnel bottom structure includes interstitital texture 1 at the bottom of tunnel, mini pile and sleeve valve barrel grouting structure, described mini pile miniature
The sleeve valve barrel grouting hole 3 of stake holes 2 and sleeve valve barrel grouting structure is spaced array and is laid in interstitital texture 1 protuberance cracking district at the bottom of described tunnel
On territory, miniature stake holes 2 is arranged in blossom type with sleeve valve barrel grouting hole 3.
Described miniature stake holes 2 and sleeve valve barrel grouting hole 3 are laid spacing and are advisable with 1.0～1.5m.
Mini pile is embedded in miniature stake holes 2, and described mini pile is anchored with substrate country rock by slip casting；Note at described mini-valve tube
Slurry embeds mini-valve tube in hole 3, injects sleeve valve sleeve shell material, and reinforce substrate country rock by mini-valve tube delamination pour slurry in mini-valve tube.
As the prioritization scheme of above-described embodiment, at the longitudinal midline of interstitital texture 1 at the bottom of described tunnel, arrange described mini pile
Hole 2.
Together with described mini pile is anchored at substrate country rock by slip casting, and at the bottom of described mini pile and tunnel, encircleing interstitital texture
1 intersection arranges backing plate 4, and applies certain pretightning force, mini pile and backing plate 4 is formed an entirety and makes system entirety stress.
Described mini pile is made up of 3 reinforcing bars.
As the prioritization scheme of above-described embodiment, as it is shown on figure 3, described mini-valve tube includes outer tube 31, slip casting inner tube 32, rubber
Leather sheath 33 and rubber ring 34, described slip casting inner tube 32, outer tube 31 and rubber case 33 are the most sheathed, described rubber ring 34
It is arranged in slip casting inner tube 32, and on the tube wall of described mini-valve tube, is provided with injected hole 35.
Described injected hole 35 spacing is 0.6-1.0m, to efficiently reduce the impact on slip casting effect of the stratum inhomogeneity.
Described outer tube 31 uses pvc pipe, described slip casting inner tube 32 to use galvanized pipe.
In order to be better understood from this utility model, below to the description that operation principle of the present utility model work is the most complete:
Construction area measures unwrapping wire, and the position, hole of miniature stake holes 2 and sleeve valve barrel grouting hole 3 is laid at interval；
To the Kong Weiyong drill hole of drilling machine in miniature stake holes 2 and sleeve valve barrel grouting hole 3 to projected depth；
After having holed, miniature stake holes 2 is inserted mini pile, sleeve valve barrel grouting hole 3 is inserted mini-valve tube；
Mini pile is put into miniature stake holes 2, will arrive bottom miniature stake holes under Grouting Pipe ozzle the most again, start serosity conveying
Pump, is in the milk to miniature stake holes 2, and after pouring into a certain amount of serosity, slow hoisting grouting pipe, until serosity fills miniature stake holes；
Backing plate 4 is set at mini pile and inverted arch interstitital texture intersection, and applies certain pretightning force, by mini pile and backing plate
4 form an entirety；
In sleeve valve barrel grouting hole 3, inject sleeve valve sleeve shell material, mini-valve tube is carried out stagewise slip casting.
Of the present utility model ultimate principle, principal character and of the present utility model advantage have more than been shown and described.One's own profession
Skilled person will appreciate that of industry, this utility model is not restricted to the described embodiments, described in above-described embodiment and description
Principle of the present utility model is simply described, on the premise of without departing from this utility model spirit and scope, this utility model is also
Have various changes and modifications, in the range of these changes and improvements both fall within claimed this utility model.This utility model
Claimed scope is defined by appending claims and equivalent thereof.
Claims (7)
1. one kind is applicable to suppress the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel, it is characterised in that described tunnel bottom structure bag
Include interstitital texture at the bottom of tunnel (1), mini pile and sleeve valve barrel grouting structure, the miniature stake holes (2) of described mini pile and sleeve valve barrel grouting
Interval, sleeve valve barrel grouting hole (3) array of structure is laid on interstitital texture at the bottom of tunnel (1) protuberance fracture area, miniature stake holes (2)
Arrange in blossom type with sleeve valve barrel grouting hole (3)；
Described mini pile is embedded in described miniature stake holes (2), and described mini pile is anchored with substrate country rock by slip casting；At described sleeve
Valve pipe injected hole (3) embeds mini-valve tube, and in mini-valve tube, injects sleeve valve sleeve shell material, and reinforced by mini-valve tube delamination pour slurry
Substrate country rock.
A kind of being applicable to the most according to claim 1 suppresses the tunnel bottom structure of interstitital texture protuberance cracking, its feature at the bottom of tunnel
It is, at the longitudinal midline of interstitital texture (1) at the bottom of described tunnel, arranges described miniature stake holes (2).
A kind of being applicable to the most according to claim 2 suppresses the tunnel bottom structure of interstitital texture protuberance cracking, its feature at the bottom of tunnel
It is, backing plate (4) is set at interstitital texture (1) intersection at the bottom of described mini pile and tunnel.
A kind of being applicable to the most according to claim 3 suppresses the tunnel bottom structure of interstitital texture protuberance cracking, its feature at the bottom of tunnel
Being, described mini pile is made up of 3 reinforcing bars.
A kind of being applicable to the most according to claim 1 suppresses the tunnel bottom structure of interstitital texture protuberance cracking, its feature at the bottom of tunnel
Being, described mini-valve tube includes outer tube (31), slip casting inner tube (32), rubber case (33) and rubber ring (34), described slip casting inner tube
(32), outer tube (31) and rubber case (33) the most sheathed, described rubber ring (34) is arranged in slip casting inner tube (32),
And it is provided with injected hole (35) on the tube wall of described mini-valve tube.
A kind of being applicable to the most according to claim 5 suppresses the tunnel bottom structure of interstitital texture protuberance cracking, its feature at the bottom of tunnel
Being, described injected hole (35) spacing is 0.6-1.0m.
A kind of being applicable to the most according to claim 6 suppresses the tunnel bottom structure of interstitital texture protuberance cracking, its feature at the bottom of tunnel
Being, described outer tube (31) uses pvc pipe, and described slip casting inner tube (32) uses galvanized pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620721742.8U CN205776410U (en) | 2016-07-08 | 2016-07-08 | A kind of being applicable to suppresses the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620721742.8U CN205776410U (en) | 2016-07-08 | 2016-07-08 | A kind of being applicable to suppresses the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel |
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| Publication Number | Publication Date |
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| CN205776410U true CN205776410U (en) | 2016-12-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620721742.8U Active CN205776410U (en) | 2016-07-08 | 2016-07-08 | A kind of being applicable to suppresses the tunnel bottom structure of interstitital texture protuberance cracking at the bottom of tunnel |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035389A (en) * | 2017-06-01 | 2017-08-11 | 新疆北新路桥集团股份有限公司 | A kind of construction method for grouting reinforcement and earth's surface construction method |
| CN109630155A (en) * | 2019-01-24 | 2019-04-16 | 宁波用躬科技有限公司 | A kind of top-bottom cross method for tunnel construction of different section type |
-
2016
- 2016-07-08 CN CN201620721742.8U patent/CN205776410U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107035389A (en) * | 2017-06-01 | 2017-08-11 | 新疆北新路桥集团股份有限公司 | A kind of construction method for grouting reinforcement and earth's surface construction method |
| CN109630155A (en) * | 2019-01-24 | 2019-04-16 | 宁波用躬科技有限公司 | A kind of top-bottom cross method for tunnel construction of different section type |
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