CN204530740U - A kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation - Google Patents
A kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation Download PDFInfo
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- CN204530740U CN204530740U CN201520090216.1U CN201520090216U CN204530740U CN 204530740 U CN204530740 U CN 204530740U CN 201520090216 U CN201520090216 U CN 201520090216U CN 204530740 U CN204530740 U CN 204530740U
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- pipeline section
- immersed tube
- tube tunnel
- foundation
- geotextile
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- 230000035939 shock Effects 0.000 title claims abstract description 31
- 230000005489 elastic deformation Effects 0.000 title claims abstract description 16
- 239000004746 geotextile Substances 0.000 claims abstract description 31
- 239000004576 sand Substances 0.000 claims abstract description 27
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 26
- 239000000440 bentonite Substances 0.000 claims abstract description 26
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical group O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims description 11
- 239000013536 elastomeric material Substances 0.000 claims description 2
- 239000004570 mortar (masonry) Substances 0.000 claims description 2
- 239000002689 soil Substances 0.000 claims description 2
- 238000010276 construction Methods 0.000 abstract description 11
- 238000007569 slipcasting Methods 0.000 abstract description 10
- 238000005516 engineering process Methods 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 3
- 238000009413 insulation Methods 0.000 abstract description 2
- 239000010410 layer Substances 0.000 description 38
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000002955 isolation Methods 0.000 description 2
- 239000004575 stone Substances 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002775 capsule Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 239000011229 interlayer Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005488 sandblasting Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
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Abstract
A kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation, this shock insulating foundation comprises bentonite bonded sand pulp layer, elastic layer, the screed doped with geotextile, slabstone subbase, described shock insulating foundation is equipped with pipeline section, and pipeline section, shock insulating foundation are all arranged in inverted trapezoidal immersed tube tunnel pipeline section foundation trench.Elastic layer is arranged between bentonite bonded sand pulp layer and the screed doped with geotextile; Screed doped with geotextile is arranged on slabstone subbase, and slabstone subbase is laid in the water-bed plane foundation trench of inverted trapezoidal immersed tube tunnel pipeline section foundation trench; The bottom of pipeline section is laid in bentonite bonded sand pulp layer; Be arc doped with the screed of geotextile and the contact section structure of elastic layer, bentonite bonded sand pulp layer is laid on elastic layer until level.The utility model adopts slip casting fundamental technology, and not only can reduce construction cost, the structure that can also meet immersed tube tunnel has the effect of shock insulation, realizes maximum benefit.
Description
Technical field
The utility model relates to a kind of foundation structure in Tunnel Design, particularly relates to a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation.
Background technology
Immersed tube tunnel is as a kind of special underground structure, and because its buried depth is more shallow, the mechanical property opposing under geological process is necessary.
Immersed tube tunnel basis is divided into two kinds substantially, and one is first laid process basis, and one is rear laid process basis, and first laid process basis comprises scrapes paving basis, pile foundation, and rear laid process basis comprises sandblasting basis, quicksand is basic, slip casting is basic, fill with capsule basis.In the immersed tube tunnel of in the past constructing, employing has slip casting basis, sand flow basis and pile foundation, in this several immersed tube tunnel basis, pile foundation construction expense is the highest, and quicksand foundation construction expense is placed in the middle, slip casting foundation construction network minimal, but the process of slip casting basic foundation is bad, easily produces differential settlement, affect the normal use of operation stage in later stage.
Building structure is shatter-proof, and form is divided into base isolation structure and structures with interlayer seismic isolation.Its damping effect generally 50% to 90%, and in seismic fortification intensity 8 degree and above Anti-Seismic Region, can demonstrate comparatively significantly economy.
Summary of the invention
For above-mentioned prior art, the utility model provides a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation.The utility model integrating tunnel geological condition, with reference to the data of immersed tube tunnel construction in the past, propose out to be a kind ofly applicable to high earthquake region, water velocity is little, silt amount is little and have anti seismic efficiency the foundation elasticity structure of immersed tube tunnel, not only reduce engineering cost, and stable, the accumulative settling amount of sedimentation and deformation is small, can ensure immersed tube tunnel foundation construction quality.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation, this shock insulating foundation comprises bentonite bonded sand pulp layer 3, elastic layer 4, the screed 5 doped with geotextile, slabstone subbase 7, described shock insulating foundation is equipped with pipeline section 2, pipeline section 2, shock insulating foundation are all arranged in inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6, and pipeline section 2 is arranged on immersed tube tunnel and satisfies location waterline less than 1 20-25m place.
Described level bentonite bonded sand pulp layer 3, elastic layer 4, doped with the screed 5 of geotextile, slabstone subbase 7 in inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6, the arrangement of each layer is that elastic layer 4 is arranged between bentonite bonded sand pulp layer 3 and the screed 5 doped with geotextile; Screed 5 doped with geotextile is arranged on slabstone subbase 7, and slabstone subbase 7 is laid in the water-bed plane foundation trench of inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6; The bottom of pipeline section 2 is laid in bentonite bonded sand pulp layer 3; Specifically, be arc doped with the screed 5 of geotextile and the contact section structure of elastic layer 4, the section structure of elastic layer 4 is arc, and bentonite bonded sand pulp layer 3 is laid in until level on elastic layer 4, and the two ends cambered surface of described elastic layer 4 and the side edge of pipeline section 2 are touched.
Compared with prior art, the beneficial effects of the utility model are as follows.
The utility model adopts slip casting fundamental technology, between bentonite bonded sand pulp layer and the screed doped with geotextile, be provided with arc elastic bed course simultaneously, not only can reduce construction cost, the structure that can also meet immersed tube tunnel has the effect of shock insulation, realizes maximum function, interests.
Accompanying drawing explanation
Fig. 1 is the utility model large-scale immersed tube tunnel pipeline section basis schematic cross-sectional view;
In figure: 1, immersed tube tunnel satisfies location waterline, 2, pipeline section, 3, bentonite bonded sand pulp layer, 4, elastic layer, 5, screed doped with geotextile, 6, inverted trapezoidal immersed tube tunnel pipeline section foundation trench, 7, slabstone subbase.
Detailed description of the invention
Below in conjunction with detailed description of the invention, the utility model is described in further detail.
As shown in Figure 1, a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation, this shock insulating foundation comprises bentonite bonded sand pulp layer 3, elastic layer 4, the screed 5 doped with geotextile, slabstone subbase 7, described shock insulating foundation is equipped with pipeline section 2, pipeline section 2, shock insulating foundation are all arranged in inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6, and pipeline section 2 is arranged on immersed tube tunnel and satisfies location waterline less than 1 20-25m place.
Described level bentonite bonded sand pulp layer 3, elastic layer 4, doped with the screed 5 of geotextile, slabstone subbase 7 in inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6, the arrangement of each layer is that elastic layer 4 is arranged between bentonite bonded sand pulp layer 3 and the screed 5 doped with geotextile; Screed 5 doped with geotextile is arranged on slabstone subbase 7, and slabstone subbase 7 is laid in the water-bed plane foundation trench of inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6; The bottom of pipeline section 2 is laid in bentonite bonded sand pulp layer 3; Specifically, be arc doped with the screed 5 of geotextile and the contact section structure of elastic layer 4, the section structure of elastic layer 4 is arc, and bentonite bonded sand pulp layer 3 is laid in until level on elastic layer 4, and the two ends cambered surface of described elastic layer 4 and the side edge of pipeline section 2 are touched.
The thickness of described level bentonite bonded sand pulp layer 3 is 40cm.
Described elastic layer 4 adopts elastomeric material, and its thickness is the half of bentonite bonded sand pulp layer 3, and namely the thickness of elastic layer 4 is 20cm, and elastic layer 4 forms the elastic deformation bed course of this shock insulating foundation, and elastic layer 4 is the arcuate shape to lower convexity.
The described screed 5 doped with geotextile is doped with geotextile in swell soil mortar, thickness doped with the screed 5 of geotextile is 35-45cm, to increase tensile strength, the maximum load elongation per unit length of this screed, the described screed 5 doped with geotextile is the basic unit of this shock insulating foundation.
Described inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6 is responsible for the original state foundation trench removing surface work in early stage by Grab, then dredges design elevation by strand suction ship; Dredge after digging design elevation, sweep after survey reaches design elevation through underwater sonar, take out mud equipment with gas-lifting type and comprehensive desilting process is carried out to this immersed tube tunnel pipeline section foundation trench face.
The thickness of described slabstone subbase 7 is 40cm, it is 80 ~ 150mm bis-slabstone, throwing equipment is that rubble feed boats and ships are equipped with excavator and broken stone leveling ship is equipped with rubble conveying and strikes off equipment, throwing scope is that pipeline section width both sides respectively add 2m, this slabstone subbase 7 can effectively squeeze substrate mud, can increase base bearing capacity.
The concrete operations technique realizing having the basic process of the large-scale immersed tube tunnel pipeline section shock insulating foundation of elastic deformation is:
(1) immersed tube tunnel pipeline section foundation trench 6 dredges excavation construction: the original state foundation trench removing surface work being responsible for early stage primarily of Grab, then dredges design elevation by strand suction ship.In Haihe River, the usual water level elevation of water level is+1.0m, inverted trapezoidal immersed tube tunnel pipeline section foundation trench 6 end distance waterline is 20.43m ~ 23.2m, dredge after digging design elevation, sweep after survey reaches design elevation through underwater sonar, take out mud equipment with gas-lifting type and comprehensive desilting process is carried out to this immersed tube tunnel pipeline section foundation trench face.
(2) the throwing construction of pipeline section basis slabstone subbase slabstone is completed: the thickness of slabstone subbase 7 is 40cm, it is 80 ~ 150mm bis-slabstone, throwing equipment is that rubble feed boats and ships are equipped with excavator and broken stone leveling ship is equipped with rubble conveying and strikes off equipment, throwing scope is that pipeline section width both sides respectively add 2m, this slabstone subbase 7 can effectively squeeze substrate mud, can increase base bearing capacity.
(3) after completing the throwing leveling of desilting slabstone subbase 7, carry out the construction of pipeline section foundation slip casting, slip casting adopts grouting pump and supporting pump line in pipeline section basis, to note the screed 5 doped with geotextile by the Grouting Pipe that pipeline section base plate is pre-buried.
(4) after note completes doped with the screed 5 of geotextile in pipeline section basis, after the screed 5 doped with geotextile completes, in its cambered surface, fill elastic layer 4, and form the globoidal structure to lower convexity.
(5) desilting again before Pipe Sinking, after pipeline section 2 sinking is in place, the construction of pipeline section foundation slip casting is carried out in filling elastic layer 4 cambered surface, slip casting adopts grouting pump and supporting pump line in pipeline section basis, to note bentonite bonded sand pulp layer 3 by the Grouting Pipe that pipeline section base plate is pre-buried, thus forms the pipeline section basis of vibration insulating foundation.
Although composition graphs is described the utility model above; but the utility model is not limited to above-mentioned detailed description of the invention; above-mentioned detailed description of the invention is only schematic; instead of it is restrictive; those of ordinary skill in the art is under enlightenment of the present utility model; when not departing from the utility model aim, can also make a lot of distortion, these all belong within protection of the present utility model.
Claims (6)
1. one kind has the large-scale immersed tube tunnel pipeline section shock insulating foundation of elastic deformation, it is characterized in that: this shock insulating foundation comprises bentonite bonded sand pulp layer (3), elastic layer (4), the screed (5) doped with geotextile, slabstone subbase (7), described shock insulating foundation is equipped with pipeline section (2), pipeline section (2), shock insulating foundation are all arranged in inverted trapezoidal immersed tube tunnel pipeline section foundation trench (6), and pipeline section (2) is arranged on immersed tube tunnel and satisfies the following 20-25m place of location waterline (1);
Described level bentonite bonded sand pulp layer (3), elastic layer (4), doped with the screed (5) of geotextile, slabstone subbase (7) in inverted trapezoidal immersed tube tunnel pipeline section foundation trench (6), the arrangement of each layer is that elastic layer (4) is arranged between the screed (5) of bentonite bonded sand pulp layer (3) doped with geotextile; Screed (5) doped with geotextile is arranged on slabstone subbase (7), and slabstone subbase (7) is laid in the water-bed plane foundation trench of inverted trapezoidal immersed tube tunnel pipeline section foundation trench (6); The bottom of pipeline section (2) is laid in bentonite bonded sand pulp layer (3); Specifically, be arc doped with the screed (5) of geotextile and the contact section structure of elastic layer (4), the section structure of elastic layer (4) is arc, it is upper until level that bentonite bonded sand pulp layer (3) is laid in elastic layer (4), and the two ends cambered surface of described elastic layer (4) and the side edge of pipeline section (2) are touched.
2. a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation according to claim 1, is characterized in that: the thickness of described level bentonite bonded sand pulp layer (3) is 40cm.
3. a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation according to claim 1, it is characterized in that: described elastic layer (4) adopts elastomeric material, its thickness is the half of bentonite bonded sand pulp layer (3), namely the thickness of elastic layer (4) is 20cm, elastic layer (4) forms the elastic deformation bed course of this shock insulating foundation, and elastic layer (4) is the arcuate shape to lower convexity.
4. a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation according to claim 1, it is characterized in that: the described screed doped with geotextile (5) is doped with geotextile in swell soil mortar, the thickness doped with the screed (5) of geotextile is 35-45cm.
5. a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation according to claim 1, it is characterized in that: described inverted trapezoidal immersed tube tunnel pipeline section foundation trench (6) is responsible for the original state foundation trench removing surface work in early stage by Grab, then dredge design elevation by strand suction ship; Dredge after digging design elevation, sweep after survey reaches design elevation through underwater sonar, take out mud equipment with gas-lifting type and comprehensive desilting process is carried out to this immersed tube tunnel pipeline section foundation trench face.
6. a kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation according to claim 1, it is characterized in that: the thickness of described slabstone subbase (7) is 40cm, is 80 ~ 150mm bis-slabstone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520090216.1U CN204530740U (en) | 2015-02-09 | 2015-02-09 | A kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520090216.1U CN204530740U (en) | 2015-02-09 | 2015-02-09 | A kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation |
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| Publication Number | Publication Date |
|---|---|
| CN204530740U true CN204530740U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520090216.1U Expired - Fee Related CN204530740U (en) | 2015-02-09 | 2015-02-09 | A kind of large-scale immersed tube tunnel pipeline section shock insulating foundation with elastic deformation |
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| CN (1) | CN204530740U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887926A (en) * | 2016-05-31 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Open trench tunnel structure capable of preventing inhomogeneous deformation of foundation for soft soil seismic subsidence stratum |
-
2015
- 2015-02-09 CN CN201520090216.1U patent/CN204530740U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105887926A (en) * | 2016-05-31 | 2016-08-24 | 中铁第四勘察设计院集团有限公司 | Open trench tunnel structure capable of preventing inhomogeneous deformation of foundation for soft soil seismic subsidence stratum |
| CN105887926B (en) * | 2016-05-31 | 2018-04-20 | 中铁第四勘察设计院集团有限公司 | Weak soil shake, which falls into stratum, prevents the open trench tunnel structure of ground inhomogeneous deformation |
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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: 20150805 |
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| CF01 | Termination of patent right due to non-payment of annual fee |