CN108930544A - A kind of broken ground underground large space method of construction - Google Patents
A kind of broken ground underground large space method of construction Download PDFInfo
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- CN108930544A CN108930544A CN201810842672.5A CN201810842672A CN108930544A CN 108930544 A CN108930544 A CN 108930544A CN 201810842672 A CN201810842672 A CN 201810842672A CN 108930544 A CN108930544 A CN 108930544A
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- 238000010276 construction Methods 0.000 title claims abstract description 52
- 238000000034 method Methods 0.000 title claims abstract description 24
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 68
- 239000010959 steel Substances 0.000 claims abstract description 68
- 239000004567 concrete Substances 0.000 claims abstract description 15
- 239000002689 soil Substances 0.000 claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 8
- 238000009434 installation Methods 0.000 claims abstract description 4
- 230000002787 reinforcement Effects 0.000 claims abstract description 4
- 230000005641 tunneling Effects 0.000 claims abstract description 4
- 238000005520 cutting process Methods 0.000 claims description 16
- 238000003466 welding Methods 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 10
- 239000002002 slurry Substances 0.000 claims description 8
- 239000011376 self-consolidating concrete Substances 0.000 claims description 6
- 230000009974 thixotropic effect Effects 0.000 claims description 5
- 239000004568 cement Substances 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 239000011150 reinforced concrete Substances 0.000 claims description 3
- 238000007569 slipcasting Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 8
- 238000011161 development Methods 0.000 description 5
- 238000007596 consolidation process Methods 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 230000003487 anti-permeability effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D13/00—Large underground chambers; Methods or apparatus for making them
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- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
The present invention provides a kind of broken ground underground large space method of construction, it is related to constructing tunnel field, key step includes: to complete active well main structure, and the orifice tube of pre-buried certain diameter；It is parallel to axis direction along the contour line in structure transverse face, is successively segmented jacking large diameter steel pipe；Carry out manual digging pile construction；The position that is bordered by of bottom steel pipe, side wall steel pipe, top plate steel pipe is cut, welded, supporting respectively, forms the gallery of connection, the installation template on the inside of gallery；The assembling reinforcement in gallery, and casting concrete；After the completion of all main structure constructions, the soil body in full face tunneling underground space structure, and the steel pipe of side wall and top board structure inner bulge part is prescinded, casting concrete between bottom plate circular arc forms smooth bottom plate, applies internal structure and finishing.This method is applicable to can be carried out all soft soil horizons of steel pipe jacking, substantially increases the safety of underground space construction, reduces removal and land occupation；It saves money.
Description
Technical field
The present invention provides a kind of broken ground underground large space methods of construction, are related to constructing tunnel field.
Background technique
21 century is the century of underground space great development, and urban development space extends from ground and upper space to underground,
It is the inexorable trend of urban development.More and more underground space development projects start to have come into people's lives, and such as: underground is fast
Fast channel, subway, underground storage and logistics, market place builet below the ground, underground parking, pipe gallery etc..
But the medium-and-large-sized railway station in city, intensive railway and highway communication, the building to stand in great numbers, all kinds of pipes to gather in length and breadth
Line, so that urban environment becomes increasingly complex.As the scale and range of underground space development constantly expand, under complex environment
Broken ground construction underground large space project is more and more, and an ultra shallow, which is buried, under such as large-scale railway station, railway, highway, Important building builds
Make the big cross section underground space.
In complex condition, conventional construction method is had the following problems:
(1) from ground, strengthening stratum usually can obtain preferable effect downwards when conditions permit, but at the train station, iron
When the underground space of constructing under the important construction of structures such as road, highway, stratum consolidation is carried out on ground without condition, it can only be in underground sky
Interior to reinforce to surrounding formations, due to being limited by execution conditions, constructional difficulties, consolidation effect is difficult to ensure；
(2) with the increasing of underground space span, for surface settlement control within the allowable range, is needed to increase advance support and
The rigidity of preliminary bracing, if stratum load and ground load act in preliminary bracing using conventional construction method, just
Degree is smaller, and ground settlement is difficult to meet the requirements；
(3) stratum consolidation when due to soil mass property it is uneven, there are discrete type, safely controllable properties for reinforcing body intensity and anti-permeability performance
Poor, there are security risks when construction.
Summary of the invention
In order to solve problem above, the present invention provides a kind of broken ground underground large space methods of construction.
Technical scheme is as follows: a kind of broken ground underground large space method of construction, key step include:
1) active well is built on the vacant lot at proposed underground space both ends, completes active well main structure, active well is close to construction
The orifice tube of pre-buried certain diameter on underground space side wall；
2) using the cross section of proposed underground space structure as construction working face in active well, along the contour line in structure transverse face
It is parallel to axis direction, jacking large diameter steel pipe is successively segmented using push bench process；
3) manual digging pile construction is carried out in the top plate steel pipe of corresponding underground space stud；
4) position that is bordered by of bottom steel pipe, side wall steel pipe, top plate steel pipe is cut, is welded, supporting respectively, form connection
Gallery, the installation template on the inside of gallery；
5) assembling reinforcement in gallery, and casting concrete；
6) circulation step 4) and step 5), the soil after the completion of all main structure constructions, in full face tunneling underground space structure
Body, and the steel pipe of side wall and top board structure inner bulge part is prescinded, casting concrete between bottom plate circular arc forms smooth bottom
Plate applies internal structure and finishing.
Technical solution of the present invention further include: thixotropic slurry is injected between tube wall and the soil body when every steel pipe jacking in step 2,
The thixotropic slurry reinforcing pipe Zhou Tuti after cement slurry displacement tube wall is used after the completion of push pipe, passes through grouting and reinforcing between adjacent two pipe.
Technical solution of the present invention further include: setting shear connector or ribs on the inside of steel pipe in step 3), when excavation pile construction,
Reinforced concrete core-tube is arranged in hole wall.
Technical solution of the present invention further include: in step 3), it is adjacent that bottom plate adjacent steel pipe is carried out while excavation pile construction
Position cutting, using steel plate by adjacent steel pipe transverse weld, and arranges support post.
To prevent from disposably all cutting open upper back or side soil body collapsing, guarantee construction safety.The technology of the present invention side
Case further include: cutting, welding, the supporting at the adjacent position of steel pipe are carried out in two times, cutting for the first time, welding, supporting odd number section,
Second of cutting, welding, supporting even number section.
Technical solution of the present invention further include: in step 5) in top plate gallery bind roof steel bar before, first in caisson
Interior binding column reinforcing bar.
Technical solution of the present invention further include: bottom plate gallery and top plate gallery are poured using self-compacting concrete.
Technical solution of the present invention further include: pouring using normal concrete for side wall gallery carries out during pouring
It vibrates.
Technical solution of the present invention further include: successively bottom steel pipe, side wall steel pipe and top steel pipe are carried out in step 4)
Construction.
The present invention provides a kind of broken ground underground large space methods of construction, specifically have the advantage that
(1) this method is applicable to can be carried out all soft soil horizons of steel pipe jacking；
(2) all construction operations of this method carry out in steel pipe, substantially increase the safety of underground space construction.
(3) normal uses such as building, pipeline are not influenced, reduce removal and land occupation.
(4) column pile driving construction is carried out in steel pipe, the underground space compared with no column is bigger, while compared with other column construction methods
It saves money.
Detailed description of the invention
Fig. 1 is Step 1: 2 half cross-section diagrams；
Fig. 2 is half cross-section diagram of step 3；
Fig. 3 is steel pipe supporting detail drawing；
Fig. 4 is half cross-section diagram of step 4；
Fig. 5 is half cross-section diagram of step 5；
Fig. 6 is half cross-section diagram of step 6；
Fig. 7 is half cross-section diagram of step 7；
Fig. 8 is half cross-section diagram of step 8；
Fig. 9 is half cross-section diagram of step 9.
Wherein, 1, the soil body, 2, steel pipe, 3, slip casting, 4, supporting construction, 4.1, support post, 4.2, interior steel plate, 4.3, outer steel
Plate, 5, caisson, 6, bottom plate self-compacting concrete, 7, template, 8, normal concrete, 9, space column, 10, top plate self-compaction it is mixed
Solidifying soil.
Specific embodiment
Below in conjunction with drawings and examples, the invention will be described further.
Embodiment one
Broken ground underground large space method of construction of the present invention, key step include:
Step 1: building active well on the vacant lot of proposed underground space both ends, active well main structure is completed.Work well depth,
Width is greater than the outer certain distance of proposed underground space structure contour line, as subsequent handling construction space.Active well is close to construction
The orifice tube of pre-buried certain diameter on underground space side wall is able to bear certain top power far from underground space side wall.
Step 2 (Fig. 1), in active well using the cross section of proposed underground space structure as construction working face, along structure
The contour line in cross section is parallel to axis direction, is successively segmented jacking large diameter steel pipe using push bench process (tool pipe or push-bench)
2。
It when underground space axis is straight line, is attached between each pipeline section using welding, is adopted between each pipeline section when being curve
With F type joint flanged joint.
Steel pipe jacking can be using one end active well as starting well, and other end active well, can also two work as received well
Well originates received well each other, when jacking artificial using tool pipe, can also originate from two active wells to top, dock in centre.Often
Thixotropic slurry is injected when root steel pipe jacking between tube wall and the soil body 1 to reduce resistance, cement slurry displacement pipe is used after the completion of push pipe
Thixotropic slurry reinforcing pipe Zhou Tuti after wall.It is reinforced between two pipes by slip casting 3.
Step 3 (Fig. 2) carries out the construction of artificial digging pile 5 in the top plate steel pipe 2 of corresponding 9 position of underground space column.
Artificial digging pile 5 applies man-hour requirement and cuts steel pipe 2, and steel pipe 2 needs using measures such as ribs that notch is all before cutting
While being reinforced.For the bearing capacity for increasing steel pipe and concrete, steel pipe inside setting shear connector or ribs.Caisson 5 is constructed
Reinforced concrete core-tube need to be arranged in Shi Kongbi, guarantee not collapse hole.
The cutting of bottom plate adjacent steel pipe adjacency section position is carried out simultaneously, using interior steel plate 4.2 and outer steel plate 4.3 by adjacent steel pipe 2
Transverse weld, and arrange that support post 4.1 forms supporting construction 4.The cutting at the adjacent position of steel pipe 2, welding, supporting in two times into
Row, cutting for the first time, welding, supporting odd number section, second of cutting, welding, supporting even number section.Cutting twice, welding, supporting are complete
The gallery of connection is formed at rear all Bottom Board Steel pipes.The interior steel plate 4.2 and 4.3 thickness of outer steel plate and steel pipe walls of adjacent position welding
It is thick identical.Support post 4.1 is concrete filled steel tube.
Step 4 (Fig. 4) binds baseplate reinforcing bar in bottom plate gallery, and pours self-compacting concrete 6.Reinforcing bar connection uses
Mechanical connection.Column reserved steel bar should stay in caisson.Concrete reserves gas vent and injected hole using pumping.
Step 5 (Fig. 5), cutting, welding, the supporting for carrying out the adjacent position of side wall steel pipe 2, form the gallery of connection, simultaneously
Lateral template 7 is installed in inside.The same step 3 of construction method.
Step 6 (Fig. 6), the assembling reinforcement in side wall gallery, and pour normal concrete 8.According to specification in casting process
It vibrates.Concrete is using pumping.
Step 7 (Fig. 7), cutting, welding, the supporting for carrying out the adjacent position of top plate steel pipe 2, form the gallery of connection.Simultaneously
The installation template 7 in downside.The same step 3 of construction method.
Step 8 (Fig. 8) first binds column reinforcing bar in caisson 5, then binds roof steel bar in top plate gallery, and pour
Build caisson self-compacting concrete and top plate self-compacting concrete 10.The same step 4 of construction method.
Step 9 (Fig. 9) circuits sequentially step 3 to eight, after the completion of all main structure constructions, full face tunneling underground
The soil body in space structure, and side wall and top board structure inner bulge part steel pipe are prescinded, casting concrete between bottom plate circular arc, shape
At smooth bottom plate, internal structure and finishing are applied, that is, the decoration of construct internal anti-collision structure etc. and exterior wall.
Embodiment two
It when construction, in addition to using the sequence successively constructed to bottom-side-top, can also do, such as use in two steps
Bottom side-top sequence is constructed, or is constructed using the sequence at the top of bottom-side.
Preferably, points three safer for construction.
The above is only presently preferred embodiments of the present invention, not does limitation in any form to the present invention, all at this
Done any modifications, equivalent replacements, and improvements etc., should be included in protection scope of the present invention within the spirit and principle of invention
Within.
Claims (9)
1. a kind of broken ground underground large space method of construction, key step include:
1) active well is built on the vacant lot at proposed underground space both ends, completes active well main structure, active well is close to construction
The orifice tube of pre-buried certain diameter on underground space side wall；
2) using the cross section of proposed underground space structure as construction working face in active well, along the contour line in structure transverse face
It is parallel to axis direction, jacking large diameter steel pipe (2) are successively segmented using push bench process；
3) artificial digging pile (5) are carried out in the top plate steel pipe (2) of corresponding underground space column (9) position to construct；
4) position that is bordered by of bottom steel pipe, side wall steel pipe, top plate steel pipe is cut, is welded, supporting respectively, form connection
Gallery, installation template (7) on the inside of gallery；
5) assembling reinforcement in gallery, and casting concrete；
6) circulation step 4) and step 5), the soil after the completion of all main structure constructions, in full face tunneling underground space structure
Body, and the steel pipe (2) of side wall and top board structure inner bulge part is prescinded, casting concrete between bottom plate circular arc is formed smooth
Bottom plate applies internal structure and finishing.
2. a kind of broken ground underground large space method of construction as described in claim 1, it is characterised in that: every in step 2
Thixotropic slurry is injected when steel pipe (2) jacking between tube wall and the soil body, the thixotroping mud after cement slurry displacement tube wall is used after the completion of push pipe
Reinforcing pipe Zhou Tuti is starched, is reinforced between adjacent two pipe by slip casting (3).
3. a kind of broken ground underground large space method of construction as described in claim 1, it is characterised in that: steel pipe in step 3)
(2) inside setting shear connector or ribs, when caisson (5) is constructed, reinforced concrete core-tube is arranged in hole wall.
4. a kind of broken ground underground large space method of construction as described in claim 1, it is characterised in that: in step 3),
The adjacent position cutting of the adjacent steel pipe (2) of bottom plate is carried out while caisson (5) is constructed, it is using steel plate that adjacent steel pipe (2) is lateral
Welding, and arrange support post (4.1).
5. a kind of broken ground underground large space method of construction as claimed in claim 4, it is characterised in that: to steel pipe (2) neighbour
Cutting, welding, the supporting of socket part position carry out in two times, first time cutting, welding, supporting odd number section, cut, weld for the second time,
Supporting even number section.
6. a kind of broken ground underground large space method of construction as described in claim 1, it is characterised in that: right in step 5)
In top plate gallery before binding roof steel bar, column reinforcing bar is first bound in caisson (5).
7. a kind of broken ground underground large space method of construction as described in claim 1, it is characterised in that: bottom plate gallery and top
Plate gallery is poured using self-compacting concrete.
8. a kind of broken ground underground large space method of construction as claimed in claim 7, it is characterised in that: side wall gallery pours
It builds using normal concrete (8), vibrates during pouring.
9. a kind of broken ground underground large space method of construction as described in claim 1, it is characterised in that: in step 4) according to
It is secondary to construct to bottom steel pipe, side wall steel pipe and top steel pipe.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810842672.5A CN108930544A (en) | 2018-07-27 | 2018-07-27 | A kind of broken ground underground large space method of construction |
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| CN201810842672.5A CN108930544A (en) | 2018-07-27 | 2018-07-27 | A kind of broken ground underground large space method of construction |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723443A (en) * | 2018-12-30 | 2019-05-07 | 中铁十四局集团有限公司 | Method for tunnel construction |
| CN110273696A (en) * | 2019-06-11 | 2019-09-24 | 中铁十四局集团第二工程有限公司 | A kind of tunnel or underground space claustra formula construction method |
| CN113685187A (en) * | 2021-08-16 | 2021-11-23 | 北京市市政一建设工程有限责任公司 | Small-clear-distance multi-hole underground excavation tunnel construction process |
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| CN102536273A (en) * | 2012-03-30 | 2012-07-04 | 中建市政建设有限公司 | One-step forming construction method for 26m large-span space |
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| CN106351670A (en) * | 2016-10-25 | 2017-01-25 | 中铁第四勘察设计院集团有限公司 | Closed pre-support tunnel structure |
| CN106437781A (en) * | 2016-10-25 | 2017-02-22 | 中铁第四勘察设计院集团有限公司 | Upper-soft lower-hard stratum tunnel supporting structure and construction method thereof |
| CN106930321A (en) * | 2017-04-14 | 2017-07-07 | 东北大学 | Underground structure novel construction method is built in a kind of pipe-jacking with large diameter combination hole stake |
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2018
- 2018-07-27 CN CN201810842672.5A patent/CN108930544A/en active Pending
Patent Citations (7)
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| US20120155968A1 (en) * | 2010-12-16 | 2012-06-21 | Korea Engineering & Consultant Co., Ltd. | Construction method of cellar for building completed |
| CN102536273A (en) * | 2012-03-30 | 2012-07-04 | 中建市政建设有限公司 | One-step forming construction method for 26m large-span space |
| CN103244143A (en) * | 2013-05-27 | 2013-08-14 | 中铁工程设计咨询集团有限公司 | Underground engineering tunneling construction method and underground station |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109723443A (en) * | 2018-12-30 | 2019-05-07 | 中铁十四局集团有限公司 | Method for tunnel construction |
| CN109723443B (en) * | 2018-12-30 | 2021-07-20 | 中铁十四局集团有限公司 | Tunnel construction method |
| CN110273696A (en) * | 2019-06-11 | 2019-09-24 | 中铁十四局集团第二工程有限公司 | A kind of tunnel or underground space claustra formula construction method |
| CN113685187A (en) * | 2021-08-16 | 2021-11-23 | 北京市市政一建设工程有限责任公司 | Small-clear-distance multi-hole underground excavation tunnel construction process |
| CN113685187B (en) * | 2021-08-16 | 2023-12-01 | 北京市市政一建设工程有限责任公司 | Construction process of small-clear-distance multi-hole undercut tunnel |
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