CN104727343B - Creep formula cofferdam open cut method - Google Patents
Creep formula cofferdam open cut method Download PDFInfo
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- CN104727343B CN104727343B CN201510156679.8A CN201510156679A CN104727343B CN 104727343 B CN104727343 B CN 104727343B CN 201510156679 A CN201510156679 A CN 201510156679A CN 104727343 B CN104727343 B CN 104727343B
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D29/00—Independent underground or underwater structures; Retaining walls
- E02D29/063—Tunnels submerged into, or built in, open water
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet piles
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Environmental & Geological Engineering (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Processing Of Solid Wastes (AREA)
Abstract
The present invention is creep formula cofferdam open cut method, comprises the steps: 1) surround creep formula cofferdam body, it may also be useful to and the box body 11 of back-off surrounds construction body 1 successively, removes body 2 and build body 3; 2) dig the earth in construction body 1, build tunnel; 3) dismounting body 2 is removed; 4) body 3 is built; 5) repeating step 2) to 4), until completing constructing tunnel; Step 3) is removed in the step removing body 2, and the dismounting body 2 after disengaging can be used as new construction body 3 and reuses. Advantage: the present invention can shorten construction period; Do not affect air route at Open sea area to pass through; The constructing tunnel of long distance, extra long distance can be realized, environmental influence is little.
Description
Technical field
What the present invention relates to is the creep formula cofferdam open cut method of constructing tunnel in a kind of can be used for, under deep water, belongs to technical field of tunnel construction.
Background technology
The usual production cycle of existing constructing tunnel is long, and used device is many, and the impact of environment is huge. Therefore, shorten construction period, improve construction environment, reduce the problem demanding prompt solution that environmental influence is tunnel industry always.
The constructional method in existing tunnel has: cofferdam open cut method, pushing method, New Austrian Tunneling Method, immersed tube method, shielding method etc.
Cofferdam open cut method, as shown in Figure 1, is only applicable to shallow water conditions.
Pushing method is a kind of tunneling formula constructional method. The shortcoming of this kind of method is major diameter, overlength jacking, correction difficulty, and is only suitable for small linear type tunnel.
New Austrian Tunneling Method is under the prerequisite of the carrying usefulness utilizing country rock itself to have, and adopts blasting technology, carries out the constructional method of full face excavation, and New Austrian Tunneling Method is only suitable in rock to build tunnel.
Immersed tube method is that through the water surface, one section of tunnel entirety is transported to installation place, and sinking is arranged in the base groove dredged one by one, and immersed tube method carries out water-bed operation, constructional difficulties at above water platform, greatly affected by environment, with high costs.
The shortcoming of shielding method is that shield engine investment is big.
Summary of the invention
What the present invention proposed is a kind of portable cofferdam open cut method that can be used for constructing tunnel, and its object is intended to the defect overcome existing for prior art, solve how in, build the technical barrier in tunnel under deep water conditions.
The technical solution of the present invention: creep formula cofferdam open cut method, comprises the steps:
1) creep formula cofferdam body is surrounded, it may also be useful to the box body of back-off surrounds construction body successively, removes body and build body;
2) dig the earth in construction body, build tunnel;
3) dismounting body is removed;
4) body is built;
5) repeating step 2) to 4), until completing constructing tunnel;
Step 3) is removed in the step removing body, and the dismounting body after disengaging can be used as new construction body and reuses.
The advantage of the present invention: the present invention can shorten construction period; Do not affect air route at Open sea area to pass through; The constructing tunnel of long distance, extra long distance can be realized, environmental influence is little.
Accompanying drawing explanation
Fig. 1 is the weir body section figure of existing cofferdam open cut method.
Fig. 2 is the front view of box body 11.
Fig. 3 is the vertical view of box body 11.
Fig. 4 is the weir body vertical view surrounded in creep formula cofferdam open cut method.
Fig. 5 is section B-B view in Fig. 4.
Fig. 6 is the weir body front view surrounded in creep formula cofferdam open cut method.
Fig. 7 is the original state schematic diagram removed in creep formula cofferdam open cut method and remove body 2.
Fig. 8 is construct in creep formula cofferdam open cut method body 1 and the view removing body 2 isolation.
Fig. 9 is that the full end face of A putting down in creep formula cofferdam open cut method and removing body 2 both sides cuts off the full end face partition 8b of 8a and B, promotes the view that the profiling end face removed on the left of body 2 cuts off 9.
Figure 10 removes the view that body 2 extracts gradually in creep formula cofferdam open cut method.
Figure 11 removes being tried hard in body 2 floating-upward process.
Figure 12 be creep formula cofferdam body is removed body 2 extract after view.
Figure 13 is the original state schematic diagram building body 3.
Figure 14 is the schematic diagram after construction body 3 tentatively inserts soil.
Figure 15 is the cross sectional view of Figure 14.
Figure 16 builds the pressure schematic diagram suffered by body 3.
Figure 17 is the schematic diagram after construction body 3 is pressed into soil.
Figure 18 builds body 3 to turn into new construction body 1 schematic diagram.
Figure 19 is the front view that full end face cuts off 8.
Figure 20 is the axis side view that full end face cuts off 8.
Figure 21 is the front view that profiling end face cuts off 9.
Figure 22 is the upward view that full end face cuts off 8 or profiling end face partition 9.
In figure 1 to be construction body, 2 be remove body, 3 be build body, 4 to be cabin body, 5 be that left end cuts off, 6 is that right-hand member cuts off, 7 is that side cuts off, 8 is that full end face cuts off, 8-1 be cut off, to be cuboid, 9 be 8-2 that profiling end face cuts off, 9-1 be cut off, 9-2 is cuboid, 9-3 be profiling limit, 10 be concatenation unit, 11 be box body, 12 be closed chamber, 13 is cut off lifting device.
Embodiment
As shown in Fig. 2～Figure 22, in being suitable for, the creep formula cofferdam open cut method of deep water conditions, comprise the steps:
1) creep formula cofferdam body is surrounded: the box body 11(using back-off is as shown in Figure 2 and Figure 3) surround construction body 1 successively, remove body 2 and build body 3;
2) dig the earth in construction body 1, build tunnel;
3) remove and remove body 2: as shown in Figure 4, remove body 2 and construction body 1 through, tunnel has completed to remove the construction at body 2 place, remove the full end face in body 2 cut off 8 and profiling end face cut off 9 state as shown in Figure 7; Step comprises:
1. isolation construction body 1 and dismounting body 2;
As shown in Figure 8, the profiling end face on the left of press-in construction body 1 cuts off 9, is cut off by profiling end face around 9 and fills, and makes construction body 1 and remove body 2 to isolate;
2. extract and remove body 2; Comprise
A puts down the full end face of A removing body 2 both sides and cuts off the full end face partition 8b of 8a and B, as shown in Figure 9;
B promotes the profiling end face removed on the left of body 2 and cuts off 9, as shown in Figure 9;
C discharges water in cabin body 4, leads to into gas to dismounting body 2 bottom, makes suffered by dismounting body 2 power upwards be greater than downward power, thus dismounting body 2 is floated, as shown in figure 11;
D removes in body 2 floating-upward process, and the full end face of the A of both sides cuts off the full end face partition 8b of 8a and B also constantly to be put down thereupon, removes body 2 until extracting, as shown in figure 12;
4) body 3 is built: comprise
1. build body 3 to dock with construction body 1: the right side that construction body 3 is transported to construction body 1, and make the concatenation unit docking of construction body 3 and construction body 1, as shown in figure 13;
2. sink to building body 3: put down the full end face of A building body 3 left and right sides and cut off the full end face partition 8b of 8a and B;Discharge the air in cabin body 4, and to water-filling in cabin body 4, construction body 3 sinks gradually and tentatively inserts soil, make cabin body 4, side partition 7, left end partition 5, right-hand member cut off 6 and Zinc fractions closed chamber 12, as shown in Figure 14, Figure 15;
3. build body 3 and it is pressed into soil layer: discharge the water built in body 3 bottom closed chamber 12, make to be partially formed negative pressure in closed chamber 12, due to build body 3 downward make a concerted effort much larger than build body 3 upwards make a concerted effort, tried hard to as shown in figure 16, therefore, in the process of draining, build body 3 under downward force action, progressively it is pressed into soil layer, until desired location, as shown in figure 17;
4. body 3 is built through with construction body 1: the water continuing to discharge closed chamber and box body 11 junction, promoting the A full end face partition 8a on the left of construction body 3 and cut off 8b with the full end face of B on the right side of construction body 1, construction body 3 and body 1 of constructing are through, now, build body 3 and turn into new construction body 1, as shown in figure 18.
5) repeating step 2) to 4), until completing constructing tunnel.
Step 3) is removed in the step removing body, and the dismounting body 2 after disengaging can be used as new construction body 3 and reuses.
As shown in Fig. 2～Fig. 5, the box body 11 of back-off, its structure comprises cabin body 4, side cuts off 7, left end cuts off 5, right-hand member cuts off 6 and tightness system, described cabin body 4 is arranged on the top that side cuts off 7, left end partition 5 and right-hand member cut off the two ends that 6 are arranged on described cabin body 4 respectively, described cabin body 4, side cuts off 7, left end cuts off sealing between 5 and right-hand member partition 6, the full end face of A is installed in described left end partition 5 and cuts off 8a and profiling end face partition 9, B full end face is installed in right-hand member partition 6 and cuts off 8b, the full end face of described A cuts off 8a, the top that the full end face of B cuts off 8b and profiling end face partition 9 is respectively provided with a set of partition lifting device 13, the two ends of described box body 11 are also provided with the concatenation unit for docking between box body 11, described concatenation unit is provided with tightness system, when the full end face partition 8 at box body 11 two ends puts down, cabin body 4, side cuts off 7, left end partition 5 and right-hand member cut off the box body 11 that 6 surround described back-off jointly.
The effect of box body 11 is the construction space built to form tunnel.
The effect of cabin body 4 increases the buoyancy of box body 11 by inflation or increased the gravity of box body 11 by water filling.
It is the water and soil for barrier box body 11 rear end that left end cuts off the effect of 5.
It is the water and soil for barrier box body 11 front end that right-hand member cuts off the effect of 6.
The effect cutting off lifting device 13 promotes or put down the full end face of A to cut off the full end face partition 8b of 8a, B and profiling end face partition 9.
The effect of tightness system makes to seal between box body 11 and box body 11.
It is sheet pile that described side cuts off 7, cuts off the water and soil of 7 both sides for side of isolation, to carry out soil the excavating construction with tunnel.
The splicing that described concatenation unit is used between box body 11 and box body 11, can install tightness system in concatenation unit.
Described full end face cuts off 8 and cuts off 9 with profiling end face, and as shown in Figure 19～Figure 22, full end face cuts off 8 for the water and soil of barrier box body 11 front end or rear end; Profiling end face partition 9 is for the water and soil of barrier box body rear end.
Described full end face cuts off 8, and its structure comprises cuts off 8-1, cuboid 8-2, and described partition 8-1 is arranged on the bottom of cuboid 8-2.
It is roughly the same with the structure of full end face partition 8 that described profiling end face cuts off 9, as shown in figure 21, comprising and cut off 9-1, cuboid 9-2, difference is that profiling limit 9-3 is arranged at the bottom of described profiling end face partition 9, and described profiling limit 9-3 is close to both sides and the top of tunnel outline.
The effect cutting off 8-1 or partition 9-1 is the water and soil of barrier box body 11 front end or rear end.
The effect of cuboid 8-2 or cuboid 9-2 is: for ease of cutting off 8-1 or cut off extracting or being pressed into of 9-1, namely when extracting or be pressed into, it is provided that extract power or pressing-in force uniformly.
The effect of profiling limit 9-3 is in order to profiling end face cuts off 9 when isolating the water and soil of construction body rear end, avoids producing to interfere with tunnel.
Claims (3)
1. creep formula cofferdam open cut method, is characterized in that comprising the steps:
1) creep formula cofferdam body is surrounded, it may also be useful to the box body (11) of back-off surrounds construction body (1) successively, removes body (2) and build body (3); And remove body (2) and construction body (1) through, build body (3) with construction body (1) through;
2) dig the earth in construction body (1), build tunnel;
3) dismounting body (2) is removed;
4) body (3) is built;
5) repeating step 2) to 4), until completing constructing tunnel;
Step 3) is removed in the step removing body, and the dismounting body (2) after disengaging can be used as new construction body (3) and reuses;
The box body (11) of described back-off, its structure comprises cabin body (4), side cuts off (7), left end cuts off (5), right-hand member cuts off (6) and tightness system, described cabin body (4) is arranged on the top that side cuts off (7), left end cuts off (5) and right-hand member cuts off the two ends that (6) are arranged on described cabin body (4) respectively, described cabin body (4), side cuts off (7), left end cuts off (5) and right-hand member cuts off sealing between (6), the full end face of A is installed in described left end partition (5) and cuts off (8a) and profiling end face partition (9), B full end face is installed in right-hand member partition (6) and cuts off (8b), the full end face of described A cuts off (8a), the top that the full end face of B cuts off (8b) and profiling end face partition (9) is respectively provided with a set of partition lifting device (13), the two ends of described box body (11) are also provided with the concatenation unit for docking between box body (11), described concatenation unit is provided with tightness system, when full end face partition (8) at box body (11) two ends puts down, cabin body (4), side cuts off (7), left end cuts off (5) and right-hand member cuts off the box body (11) that (6) surround described back-off jointly.
2. creep formula cofferdam open cut method as claimed in claim 1, it is characterised in that described step 3) is removed and removed body (2), specifically comprises:
1. isolation construction body (1) and dismounting body (2);
When dismounting body (2) and construction body (1) are through, after tunnel has completed to remove the construction at body (2) place, the profiling end face in press-in construction body (1) left side cuts off (9), profiling end face is cut off (9) and around fills, and makes construction body (1) and removes body (2) isolation;
2. extract and remove body (2), comprising:
A puts down the full end face of A removing body (2) both sides and cuts off (8a) and full end face partition (8b) of B,
B promotes the profiling end face removing body (2) left side and cuts off (9);
C discharges cabin body (4) interior water, leads to into gas to dismounting body (2) bottom, makes suffered by dismounting body (2) power upwards be greater than downward power, thus dismounting body (2) is floated;
D removes in body (2) floating-upward process, and the full end face of the A of both sides cuts off (8a) and full end face partition (8b) of B is also constantly put down thereupon, removes body (2) until extracting.
3. creep formula cofferdam open cut method as claimed in claim 1, step 4) described in its feature builds body (3): comprising:
1. build body (3) to dock with construction body (1): the right side that body (3) is transported to construction body (1) will be built, and make the concatenation unit docking of construction body (3) and construction body (1);
2. sink to building body (3): put down the full end face of A building body (3) left and right sides and cut off (8a) and full end face partition (8b) of B; Discharge the air in cabin body (4), and to cabin body (4) interior water-filling, construction body (3) is sunk gradually and tentatively inserted soil, make cabin body (4), side cut off (7), left end partition (5), right-hand member partition (6) and Zinc fractions closed chamber (12);
3. body (3) press-in soil layer is built: discharge the water built in body (3) bottom closed chamber (12), make to be partially formed negative pressure in closed chamber (12), due to build body (3) downward make a concerted effort much larger than build body (3) upwards make a concerted effort, therefore, in the process of draining, build body (3) under the effect of hydraulic pressure, progressively it is pressed into soil layer, until desired location;
4. body (3) is built through with construction body (1): the water continuing to discharge closed chamber and box body (11) junction, the full end face of B promoting A full end face partition (8a) building body (3) left side and construction body (1) right side cuts off (8b), build body (3) through with construction body (1), now, build body (3) and turn into new construction body (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510156679.8A CN104727343B (en) | 2015-04-03 | 2015-04-03 | Creep formula cofferdam open cut method |
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| CN201510156679.8A CN104727343B (en) | 2015-04-03 | 2015-04-03 | Creep formula cofferdam open cut method |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104878774B (en) * | 2015-04-03 | 2017-01-11 | 王燏斌 | Movable cofferdam open-cutting method |
| CN108612116A (en) * | 2018-06-07 | 2018-10-02 | 深圳市市政设计研究院有限公司 | Storehouse cofferdam construction method is divided in long range seabed across municipal tunnel greatly |
| CN113789797A (en) * | 2021-07-05 | 2021-12-14 | 长沙理工大学 | Steel sheet pile cofferdam construction method for deeply covering sand and gravel layer |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH10102520A (en) * | 1996-09-27 | 1998-04-21 | Mitsubishi Heavy Ind Ltd | Submerged tunnel construction method |
| CN101603315B (en) * | 2009-05-18 | 2011-06-22 | 中铁隧道集团有限公司 | Method for constructing seepage prevention system of secondary cofferdam for immersed tube tunnel |
| CN102061706B (en) * | 2010-12-09 | 2013-06-05 | 江苏省水利机械制造有限公司 | Assembly steel box cofferdam and construction method thereof |
| CN102644290A (en) * | 2012-05-14 | 2012-08-22 | 中国十九冶集团有限公司 | Steel cofferdam construction method suitable for deep silt-layer bridge construction in shallow sea area |
| CN103981879A (en) * | 2014-06-03 | 2014-08-13 | 上海隧道工程股份有限公司 | Cofferdam structure and construction method thereof |
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