CN208650073U - Cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction - Google Patents
Cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction Download PDFInfo
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- CN208650073U CN208650073U CN201821260253.2U CN201821260253U CN208650073U CN 208650073 U CN208650073 U CN 208650073U CN 201821260253 U CN201821260253 U CN 201821260253U CN 208650073 U CN208650073 U CN 208650073U
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Abstract
The utility model discloses cut and cover method subaqueous tunnel steel sheet-pile cofferdam constructions, first row steel sheet pile and second row steel sheet pile are inserted under riverbed, pass through more reinforcing pull rod connections between first row steel sheet pile and second row steel sheet pile, backfill is filled between first row steel sheet pile and second row steel sheet pile, high-pressure rotary-spray column cut-pff wall is arranged between first row steel sheet pile and second row steel sheet pile and is inserted under riverbed, high-strength TGXG is separately positioned on the outside of first row steel sheet pile and the outside of second row steel sheet pile, is equipped with anti-seepage geomembrane on the inside of first row steel sheet pile.The utility model suitably raises outside plate stake top, improves waterproof ability using unilateral steel sheet pile, while reducing weir core backfill height and inside steel sheet pile dosage, saves project cost；Lateral connection steel sheet pile in weir is arranged at a certain distance and connects front two rows steel sheet pile for cofferdam, reinforces connection, is conducive to the globality for improving entire cofferdam, guarantees cofferdam safety.
Description
Technical field
The utility model relates to tunneling technique fields more particularly to cut and cover method subaqueous tunnel steel sheet-pile cofferdam to construct.
Background technique
With the fast development of modern city, it is limited by the objective condition of development space, urban planning and landscape environment etc.
Limitation, more and more wear river (lake) tunnel and start to build, and the Tunnel Engineering for carrying out cut and cover tunneling in water, repair
Building coffering has been common important working measure, and wears the key link of river (lake) tunnel open excavation method construction success or failure.
Cut and cover method builds tunnel or large-scale hydraulic structure using double steel sheet-pile cofferdam in general water, it is common practice that preceding
Backfill and two rows of steel sheet piles are linked as that cofferdam is integrally formed by reinforcing pull rod between two rows of steel sheet piles afterwards.This kind of way is mainly led to
It crosses front and back steel sheet pile and weir core bankets water seepage prevention, but general weir core fill compaction degree not can guarantee, anti-seepage effect is poor, and underwater
Stratum, which mainly carries out water seepage prevention by steel sheet pile, need to lengthen steel sheet pile when underwater water penetration buried depth of strata is larger.Construction is difficult
Degree is big, and construction quality is not easy to guarantee, and project cost is higher.
Those skilled in the art are dedicated to solving above-mentioned technological deficiency.
Utility model content
In view of the above drawbacks of the prior art, the technical purpose of the utility model is to provide cut and cover method subaqueous tunnel steel
Sheet-pile cofferdam construction.
To realize the above-mentioned technical purpose, the utility model provides a kind of cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction,
Including high-strength TGXG on the outside of first row steel sheet pile, second row steel sheet pile, high-pressure rotary jet grouting pile cut-pff wall, first row steel sheet pile,
High-strength TGXG and Duo Gen reinforcing pull rod on the outside of second row steel sheet pile, the first row steel sheet pile and second row steel sheet pile are inserted into
Under riverbed, pass through more steel stay column connections, the first row steel sheet pile between the first row steel sheet pile and second row steel sheet pile
Backfill is filled between second row steel sheet pile, the high-pressure rotary-spray column cut-pff wall is arranged in first row steel sheet pile and the second steel
It between sheet pile and is inserted under riverbed, the outside of first and second row's steel sheet pile, the first row steel is arranged in the high-strength TGXG
Anti-seepage geomembrane is equipped on the inside of sheet pile.
Preferably, sand pocket is provided in high-strength TGXG on the outside of the first row steel sheet pile.
Preferably, sand pocket berm with superloading is provided on the outside of the second row steel sheet pile in high-strength TGXG and doubles as construction just
Road.
Preferably, the top of the backfill is placed with emergency sand pocket.
Preferably, the first row steel sheet pile and second row steel sheet pile include steel purlin and several steel plates, several
Steel plate is both secured to the steel purlin.
Preferably, it is fixedly connected between the two neighboring steel plate by fore shaft, the fore shaft embeds butter or other stop
Water material.
The utility model has the beneficial effects that
1, outside plate stake top is suitably raised, and improves waterproof ability using unilateral steel sheet pile, while being reduced weir core and being returned
Raising degree and inside steel sheet pile dosage save project cost.
2, lateral connection steel sheet pile connection front two rows steel sheet pile in weir is arranged in cofferdam at a certain distance, reinforces connection,
Be conducive to improve the globality in entire cofferdam, guarantee cofferdam safety.
3, weir core is reinforced using high-pressure rotary jet grouting pile, on the one hand enhances the density that weir core bankets, solves weir core and banket
The problem of can not being compacted, while improving weir core soil seepage capability；Another aspect high-pressure rotary jet grouting pile underwater stratum, with infiltration
Property stronger soil layer (such as sandy soil stratum) stirring consolidation after form the water-stop curtain that water proof works well, can effective sealing, protect
Underground percolation is demonstrate,proved to stablize.
4, berm with superloading is set on the inside of cofferdam, on the one hand enhances cofferdam overall stability, another aspect berm with superloading is simultaneous
Make builder's road, facilitates site operation.
Detailed description of the invention
Fig. 1 is the structure chart of the utility model；
Fig. 2 is the Section A-A schematic diagram of the utility model；
Fig. 3 is two steel sheet connection structure figures of the utility model.
Specific embodiment
Make furtherly below with reference to technical effect of the attached drawing to the design of the utility model, specific structure and generation
It is bright, to be fully understood from the purpose of this utility model, feature and effect.
Such as Fig. 1 is simultaneously combined shown in Fig. 2 and Fig. 3, a kind of cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction, including first row steel
Sheet pile 1, second row steel sheet pile 2, high-pressure rotary jet grouting pile cut-pff wall 6, high-strength TGXG 7, second row steel on the outside of first row steel sheet pile
High-strength TGXG 8 and Duo Gen reinforcing pull rod 4 on the outside of sheet pile, the first row steel sheet pile 1 and second row steel sheet pile 2 are inserted into riverbed
Under, it is connected between the first row steel sheet pile 1 and second row steel sheet pile 2 by more steel stay columns 4, the first row steel sheet pile 1
Be filled with backfill 15 between second row steel sheet pile 2, the high-pressure rotary-spray column cut-pff wall 6 setting first row steel sheet pile 1 with
It between second row steel sheet pile 2 and is inserted under riverbed, the outside of first row steel sheet pile 1 is arranged in the high-strength TGXG 7, described
The outside of second row steel sheet pile 2 is arranged in high-strength TGXG 8, is equipped with anti-seepage geomembrane on the inside of the first row steel sheet pile 1
3。
Further, sandbag 10, the second row steel are provided on the outside of the first row steel sheet pile in high-strength TGXG 7
Sand pocket berm with superloading is provided on the outside of sheet pile in high-strength TGXG 8 as builder's road 11.
Wherein, the top of the backfill 15 is placed with emergency sand pocket 5, the first row steel sheet pile 1 and second row steel plate
Stake 2 includes steel purlin 12 and several steel plates 13, several steel plates 13 are both secured to the steel purlin 12, two neighboring described
It is fixedly connected between steel plate 13 by fore shaft 14, the fore shaft 14 embeds butter or other sealing materials.
The advantages of the utility model:
Outside plate stake top is suitably raised, and improves waterproof ability using unilateral steel sheet pile, while reducing the backfill of weir core
Height and inside steel sheet pile dosage save project cost；Lateral connection steel sheet pile in weir is arranged at a certain distance and connects for cofferdam
Front two rows steel sheet pile reinforces connection, is conducive to the globality for improving entire cofferdam, guarantees cofferdam safety；Weir core uses high pressure
Rotary churning pile is reinforced, and on the one hand enhances the density that weir core bankets, solving the problems, such as that weir core bankets can not be compacted, and improve simultaneously
Weir core soil seepage capability；Another aspect high-pressure rotary jet grouting pile underwater stratum, with the stronger soil layer of permeability (such as grittiness soil
Layer) form the water-stop curtain that works well of water proof after stirring consolidation, can effective sealing, guarantee that underground percolation is stablized；On the inside of cofferdam
Berm with superloading is set, cofferdam overall stability is on the one hand enhanced, another aspect berm with superloading doubles as builder's road, facilitates scene
Construction.
The preferred embodiments of the present invention have been described in detail above.It should be appreciated that the ordinary skill people of this field
Member according to the present utility model can conceive without creative work makes many modifications and variations.Therefore, all this technology necks
Technical staff passes through logic analysis, reasoning or limited reality according to the design of the utility model on the basis of existing technology in domain
Available technical solution is tested, it all should be within the scope of protection determined by the claims.
Claims (6)
1. cut and cover method subaqueous tunnel steel sheet-pile cofferdam constructs, it is characterised in that: including first row steel sheet pile (1), second row steel plate
It is stake (2), high-pressure rotary jet grouting pile cut-pff wall (6), high-strength TGXG (7) on the outside of first row steel sheet pile, high on the outside of second row steel sheet pile
Strong TGXG (8) He Duogen reinforcing pull rod (4), the first row steel sheet pile (1) and second row steel sheet pile (2) are inserted into riverbed
Under, it is connect between the first row steel sheet pile (1) and second row steel sheet pile (2) by more reinforcing pull rods (4), the first row steel
Backfill (15) are filled between sheet pile (1) and second row steel sheet pile (2), the high-pressure rotary jet grouting pile cut-pff wall (6) setting is the
It between one row's steel sheet pile (1) and second row steel sheet pile (2) and is inserted under riverbed, the high-strength TGXG (7) is arranged first
The outer hand hay cutter of steel sheet pile (1) is arranged, the high-strength TGXG (8) is arranged in the outside of second row steel sheet pile (2), the first row steel
Sheet pile (1) internal layer is equipped with anti-seepage geomembrane (3).
2. cut and cover method subaqueous tunnel as described in claim 1 steel sheet-pile cofferdam constructs, it is characterised in that: the first row steel plate
Sand pocket (10) are provided on the high-strength TGXG (7) in stake outside.
3. cut and cover method subaqueous tunnel as claimed in claim 2 steel sheet-pile cofferdam constructs, it is characterised in that: the second row steel plate
The top of the high-strength TGXG (8) in stake outside is provided with sand pocket berm with superloading as builder's road (11).
4. cut and cover method subaqueous tunnel as claimed in claim 3 steel sheet-pile cofferdam constructs, it is characterised in that: the backfill (15)
Top be placed with emergency sand pocket (5).
5. cut and cover method subaqueous tunnel as claimed in claim 4 steel sheet-pile cofferdam constructs, it is characterised in that: the first row steel plate
Stake (1) and second row steel sheet pile (2) include steel purlin (12) and several steel plates (13), several steel plates (13) are both secured to
The steel purlin (12).
6. cut and cover method subaqueous tunnel as claimed in claim 5 steel sheet-pile cofferdam constructs, it is characterised in that: the two neighboring steel
It is fixedly connected between plate (13) by fore shaft (14), the fore shaft (14) embeds butter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821260253.2U CN208650073U (en) | 2018-08-06 | 2018-08-06 | Cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821260253.2U CN208650073U (en) | 2018-08-06 | 2018-08-06 | Cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction |
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| Publication Number | Publication Date |
|---|---|
| CN208650073U true CN208650073U (en) | 2019-03-26 |
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ID=65788781
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821260253.2U Active CN208650073U (en) | 2018-08-06 | 2018-08-06 | Cut and cover method subaqueous tunnel steel sheet-pile cofferdam construction |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284432A (en) * | 2019-06-04 | 2019-09-27 | 中交路桥建设有限公司 | A kind of high roadbed area first applies fills out abutment construction method afterwards |
| CN110439012A (en) * | 2019-07-22 | 2019-11-12 | 安徽省交通建设股份有限公司 | It paddles the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam |
| CN111021270A (en) * | 2019-12-27 | 2020-04-17 | 合肥市市政设计研究总院有限公司 | Construction method for permanently protecting existing pipeline during road reconstruction |
| CN111851540A (en) * | 2020-07-07 | 2020-10-30 | 广东珠荣工程设计有限公司 | High-rigidity anti-seepage combined cofferdam and construction method thereof |
| CN114411782A (en) * | 2022-01-17 | 2022-04-29 | 中铁十四局集团第二工程有限公司 | Waterproof construction method for PC (polycarbonate) combined pile enclosure structure |
-
2018
- 2018-08-06 CN CN201821260253.2U patent/CN208650073U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110284432A (en) * | 2019-06-04 | 2019-09-27 | 中交路桥建设有限公司 | A kind of high roadbed area first applies fills out abutment construction method afterwards |
| CN110284432B (en) * | 2019-06-04 | 2021-06-08 | 中交路桥建设有限公司 | Construction method for filling bridge abutment in high-fill area after first construction |
| CN110439012A (en) * | 2019-07-22 | 2019-11-12 | 安徽省交通建设股份有限公司 | It paddles the construction method of open-cut foundation ditch combined steel sheet-pile cofferdam |
| CN110439012B (en) * | 2019-07-22 | 2021-02-26 | 安徽省交通建设股份有限公司 | Construction method of wading open-cut foundation pit composite steel sheet pile cofferdam |
| CN111021270A (en) * | 2019-12-27 | 2020-04-17 | 合肥市市政设计研究总院有限公司 | Construction method for permanently protecting existing pipeline during road reconstruction |
| CN111851540A (en) * | 2020-07-07 | 2020-10-30 | 广东珠荣工程设计有限公司 | High-rigidity anti-seepage combined cofferdam and construction method thereof |
| CN114411782A (en) * | 2022-01-17 | 2022-04-29 | 中铁十四局集团第二工程有限公司 | Waterproof construction method for PC (polycarbonate) combined pile enclosure structure |
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