CN105951712A - Underground diaphragm wall construction method for cutting through underground structure under ground limitation condition - Google Patents
Underground diaphragm wall construction method for cutting through underground structure under ground limitation condition Download PDFInfo
- Publication number
- CN105951712A CN105951712A CN201610377884.1A CN201610377884A CN105951712A CN 105951712 A CN105951712 A CN 105951712A CN 201610377884 A CN201610377884 A CN 201610377884A CN 105951712 A CN105951712 A CN 105951712A
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- Prior art keywords
- wall
- underground
- underground structure
- deeply
- lead
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/18—Bulkheads or similar walls made solely of concrete in situ
- E02D5/187—Bulkheads or similar walls made solely of concrete in situ the bulkheads or walls being made continuously, e.g. excavating and constructing bulkheads or walls in the same process, without joints
Abstract
The invention discloses an underground diaphragm wall construction method for cutting through an underground structure under the ground limitation condition. The underground diaphragm wall construction method for cutting through the underground structure under the ground limitation condition comprises the steps of building deep guide walls at two sides of an proposed underground diaphragm wall in the underground structure in a fitting way, and building brackets on gaps between the outer sides of the deep guide walls and a base plate; carrying out step-slope excavation on soil mass above a top plate within the range of the proposed underground diaphragm wall, cutting and breaking the top plate within the range of the proposed underground diaphragm wall, and alternatively arranging horizontal supports in an upper cutting groove formed by the top plate; carrying out precipitation construction on the underground structure, and cutting and breaking the base plate between the deep guide walls to form a lower cutting groove; backfilling cemented soil, and constructing inverted L-shaped guide walls. According to the underground diaphragm wall construction method for cutting through the underground structure under the ground limitation condition, on the premise of ensuring the safety of the existing underground structure and surrounding building structures, the underground diaphragm wall is ensured to successfully cut through the underground structure, and the traffic above the underground structure is ensured to be normal.
Description
Technical field
The present invention relates to the deep basal pit works such as track traffic, underground space development, building construction
Journey field, in particular to the underground passing through existing underground structure under the confined condition of a kind of place
Continuous wall construction method.
Background technology
Diaphram wall, as a kind of common foundation pit enclosure structure pattern, is widely used in
In Metro station excavation engineering.Along with the development of subway construction cause, subway erect-position can not
Avoid with city below the underground such as built underground people's air defense cave depot, market place builet below the ground, underground garage
There is conflict situations such as intersecting, overlapping in structure.This kind of situation, it is common practice that put slope and break
Remove the underground structure affecting continuous wall trench underground region, after element earthen backfill is compacted this region
Carry out normal construction of diaphragm wall again, when site condition is by limited time, do not possess
Put slope excavation and abolish the condition of underground structure, abolish impact residue underground knot the most on a large scale
The stability in the large of structure, still needs and takes the protection residue underground structure peace of measure targetedly
Entirely, it is ensured that road traffic normal pass above construction period residue underground structure.How to exist
Under the confined condition of place, it is ensured that diaphram wall can pass through the same of existing underground structure smoothly
Time ensure that underground structure self and safety of surrounding environment are to need in engineering to solve in work progress
Important Problems certainly.
Summary of the invention
Present invention aim to solve the deficiency of above-mentioned background technology, it is provided that a kind of place
The construction method of underground continuous wall of underground structure is passed through, it is ensured that existing underground is tied under confined condition
On the premise of structure self and periphery construction of structures safety, it is ensured that diaphram wall can be worn smoothly
More underground structure, it is ensured that traffic normal pass above underground structure.
The technical scheme is that the ground passing through underground structure under the confined condition of a kind of place
Lower continuous wall construction method, it is characterised in that step is:
A. in existing underground structure, the diaphram wall both sides planned to build of laminating build and deeply lead wall,
Deeply lead wall to be connected with top board, the base plate of underground structure, described deeply lead outside wall and between base plate between
Every building bracket；
B. the soil body in the range of the diaphram wall planned to build, above top board is put slope excavation,
Cutting is abolished top board and is deeply led top board between wall two and form cutting groove, is spaced in upper cutting groove
Arrange horizontal support；
C. underground structure is carried out dewatering construction, after level of ground water is reduced to below base plate,
Cutting is abolished base plate and is deeply led between wall base plate two and form incision and cut groove；
D. soil cement is backfilled above top board at excavation, at soil cement edge, the ground planned to build of laminating
Lower diaphragm wall both sides construction inverted L shape leads wall, leads pouring diaphram wall between wall two.
Preferably, in step d, first lower cutting groove, two deeply lead between wall, on cutting groove even
Backfill element soil in the logical space formed；Soil cement is backfilled at excavation, at soil cement above top board
The diaphram wall both sides construction inverted L shape that edge, laminating are planned to build leads wall；Treat to the design duration
Time lead two again and between wall, pour diaphram wall.
Preferably, deeply leading wall in step a is the armored concrete using water-proof concrete cast
Structure.
Preferably, step a is led deeply wall upper and lower side respectively with top board, the base plate of underground structure
Bar planting connects.
Preferably, light well point of first constructing in step c, well point arranges outside wall along deeply leading,
After making level of ground water be reduced to below base plate by well point, cutting is abolished base plate and is deeply led wall two
Between base plate formed incision cut groove.
Preferably, step d is led wall bottom to be connected with top board bar planting.
Wall of leading in the present invention is that in prior art, inverted L shape leads wall, and galianconism is positioned horizontally in earth's surface,
Long-armed vertically stretching into underground, it act as: provides to chute forming machine grooving and guides；Store mud
Cave in preventing notch.
The invention have the benefit that
1. the present invention is by rebuilding underground structural support system, it is ensured that diaphram wall is executed
Underground structure inherently safe between the duration.The present invention solves diaphram wall in prior art and needs
Pass through the technical problem of constructional difficulties under existing underground structure, place confined condition, it is ensured that
Construction period underground structure self and the safety of surrounding enviroment, for safe construction, control
Risk has good effect.
2. the present invention be applicable to diaphram wall need to pass through earth's surface site condition limited, cannot
Put slope excavation abolish, abolish on a large scale impact residue underground structure stability in the large existingly
Lower structure situation, the most built underground people's air defense cave depot of existing underground structure, market place builet below the ground,
Underground Garage.It is particularly suited under the conditions of site condition is limited, road can not break, working as subway
The construction of foundation pit enclosure structure diaphram wall when station scope exists built underground structure.
Construction method the most of the present invention reduces construction risk, it is ensured that construction quality, accelerates
Construction speed, method is simple, economical rationality, technology maturation, have a extensive future, benefit
Well.
Accompanying drawing explanation
Fig. 1 is that the present invention constructs schematic diagram
Wherein: 1. diaphram wall 2. underground structure 3. is deeply led wall 4. bracket 5. and put slope line 6.
Horizontal support 7. well point 8. native 9. soil cements 10. of element lead wall 2.1 top board 2.2 base plate 2.3
2.4 times cutting grooves of upper cutting groove.
Detailed description of the invention
The present invention is described in further detail with specific embodiment below in conjunction with the accompanying drawings.
As it is shown in figure 1, the present invention provides passes through underground structure under the confined condition of a kind of place
Construction method of underground continuous wall, existing underground structure 2 includes top board 2.1, the base plate 2.2 (end
Plate includes concrete layer and lower section bed course), construction method concretely comprises the following steps:
A. in underground structure 2, diaphram wall 1 both sides planned to build of laminating build and deeply lead wall 3,
Deeply lead wall 3 to be connected, by structure again with top board 2.1, base plate 2.2 bar planting of underground structure 2
Build underground structural support system, it is ensured that diaphram wall 1 construction period underground structure self is pacified
Entirely.Deeply leading wall 3 is the reinforced concrete structure using water-proof concrete cast, seepage-resistant grade
P8, it is ensured that diaphram wall 1 slurry coat method (or cast concrete) not spillage.Deeply lead wall
Build bracket 4 along deeply leading wall 3 length direction interval outside 3 and between base plate 2.2.
B. in the range of the diaphram wall 1 planned to build, above top board 2.1, the soil body puts slope
Excavation, both sides are formed and put slope line 5, put bottom slope line 5 until the diaphram wall 1 planned to build
Scope both sides, cutting is abolished top board 2.1 and is deeply led (the diaphram wall planned to build between wall 3 two
In the range of 1) the upper cutting groove 2.3 of top board 2.1 formation, in upper cutting groove 2.3, water is arranged at interval
Flat support 6, the lateral Water And Earth Pressures that opposing both sides pass over, it is ensured that construction period foundation ditch
The phenomenons such as periphery construction of structures is not ftractureed, sidesway, sedimentation.
C. underground structure 2 being carried out dewatering construction, the dewatering construction of the present embodiment is light for construction
Type well point 7, well point 7, along deeply leading layout outside wall 3, makes subsoil water potential drop by well point 7
As little as base plate less than 2.2 0.5m, then cutting abolishes base plate 2.2 and deeply leads between wall 3 two and (intend
In the range of the diaphram wall 1 built) the lower cutting groove 2.4 of base plate 2.2 formation, it is ensured that do not occur
Retention of excessive fluid, gush the dangerous situations such as sand.
It is not to connect under construction ground immediately after a lot of work progress abolish existing underground structure
Continuous wall, therefore after abolishing existing underground structure, can select to construct or treat suitable work immediately
Phase constructs diaphram wall again.
Abolish existing underground structure construct immediately diaphram wall time, step d is:
D. above top board 2.1, backfill soil cement 9 is to putting slope line 5, and soil cement 9 is close to for outside
Putting the triangle stack of slope line 5, wherein concordant with horizontal earth's surface, inner side is the most somewhat
Towards tilted hypotenuse, horizontal sides and inner side construction inverted L shape at soil cement 9 lead wall 10,
Lead diaphram wall 1 both sides that wall 10 laminating is planned to build, lead wall 10 bottom and plant with top board 2.1
Muscle connects, it is ensured that notch is stable, leads pouring diaphram wall 1 between wall 10 two.
When the suitable durations such as abolishing existing underground structure constructs diaphram wall 1 again, step
D is:
D. wall 3 edge, upper cutting groove 2.3 both sides of the edge, lower cutting groove 2.4 is deeply led due to two
Both sides of the edge are all corresponding with diaphram wall 1 both sides planned to build, therefore descend cutting groove 2.4,
Two deeply lead between wall 3, the most through in space that upper cutting groove 2.3 connection is formed,
Back-filling in layers element soil 8 in this space, to top board 2.1 upper surface, then executes immediately with above-mentioned
Equally backfill soil cement 9 during work diaphram wall, construction inverted L shape leads wall 10, leads wall 10
Bottom is connected with top board 2.1 bar planting.Treat to the suitable duration to lead two again and pour underground between wall 10
Diaphragm wall 1.
Claims (6)
1. under the confined condition of place, pass through a construction method of underground continuous wall for underground structure,
It is characterized in that, step is:
A. in existing underground structure (2), diaphram wall (1) both sides planned to build of fitting
Build and deeply lead wall (3), deeply lead wall (3) and the top board (2.1) of underground structure (2), the end
Plate (2.2) connect, described deeply lead wall (3) outside with base plate (2.2) between be spaced build cattle
Lower limb (4)；
B. in the range of the diaphram wall (1) planned to build, top board (2.1) top the soil body enter
Row puts slope excavation, and cutting is abolished top board (2.1) and deeply led top board (2.1) between wall (3) two
Cutting groove (2.3) in formation, in upper cutting groove (2.3), horizontal support (6) is arranged at interval；
C. underground structure (2) is carried out dewatering construction, treat that level of ground water is reduced to base plate (2.2)
After below, cutting is abolished base plate (2.2) and is deeply led base plate (2.2) formation between wall (3) two
Lower cutting groove (2.4)；
D. soil cement (9) is backfilled, on soil cement (9) limit at the excavation of top board (2.1) top
Diaphram wall (1) the both sides construction inverted L shape that edge, laminating are planned to build leads wall (10), two
Lead and between wall (10), pour diaphram wall (1).
2. construction method as claimed in claim 1, it is characterised in that in step d, first
Lower cutting groove (2.4), two deeply lead between wall (3), upper cutting groove (2.3) connection is formed
Space in backfill element soil (8)；Soil cement (9) is backfilled at the excavation of top board (2.1) top,
At soil cement (9) edge, laminating plan to build diaphram wall (1) both sides construction inverted L shape
Lead wall (10)；Lead two again when to the design duration and pour diaphram wall between wall (10)
(1)。
3. construction method as claimed in claim 1, it is characterised in that deeply lead in step a
Wall (3) is the reinforced concrete structure using water-proof concrete cast.
4. construction method as claimed in claim 1, it is characterised in that deeply lead in step a
Wall (3) upper and lower side top board (2.1), base plate (2.2) with underground structure (2) respectively is planted
Muscle connects.
5. construction method as claimed in claim 1, it is characterised in that first execute in step c
Work light well point (7), well point (7) are arranged, by well point (7) along deeply leading wall (3) outside
Make level of ground water be reduced to base plate (2.2) below after, cutting abolish base plate (2.2) two
Deeply lead base plate (2.2) between wall (3) and form lower cutting groove (2.4).
6. construction method as claimed in claim 1, it is characterised in that lead wall in step d
(10) bottom is connected with top board (2.1) bar planting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610377884.1A CN105951712A (en) | 2016-05-31 | 2016-05-31 | Underground diaphragm wall construction method for cutting through underground structure under ground limitation condition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610377884.1A CN105951712A (en) | 2016-05-31 | 2016-05-31 | Underground diaphragm wall construction method for cutting through underground structure under ground limitation condition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105951712A true CN105951712A (en) | 2016-09-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610377884.1A Pending CN105951712A (en) | 2016-05-31 | 2016-05-31 | Underground diaphragm wall construction method for cutting through underground structure under ground limitation condition |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869110A (en) * | 2016-12-29 | 2017-06-20 | 上海市基础工程集团有限公司 | The construction method of underground continuous wall of existing underground structure |
| CN108018865A (en) * | 2017-12-01 | 2018-05-11 | 姚燕明 | The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall |
| CN108775009A (en) * | 2018-06-28 | 2018-11-09 | 中国建筑第四工程局有限公司 | A kind of measure method preventing grooving spillage and leak |
| CN109706915A (en) * | 2018-12-11 | 2019-05-03 | 北京建工土木工程有限公司 | The construction method of guide wall of underground continuous wall in a kind of tunnel |
| CN110387887A (en) * | 2019-06-28 | 2019-10-29 | 同济大学建筑设计研究院(集团)有限公司 | It is oriented to the construction method of partition wall and its construction method and foundation pit enclosure structure |
| CN110924428A (en) * | 2019-11-08 | 2020-03-27 | 中天建设集团有限公司 | Pile-forming construction method for cast-in-place pile to penetrate existing basement structure |
| CN112593546A (en) * | 2020-12-03 | 2021-04-02 | 中铁广州工程局集团有限公司 | Construction method for underground diaphragm wall to penetrate through underground structure |
Citations (2)
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| JPS5530039A (en) * | 1978-08-23 | 1980-03-03 | Kajima Corp | Method for constructing underground structures |
| CN102561361A (en) * | 2012-03-05 | 2012-07-11 | 中交第四航务工程局有限公司 | Ultra-deep T-shaped trench-wall pile in soft-toped hard-bottomed soil layer and trench forming method |
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2016
- 2016-05-31 CN CN201610377884.1A patent/CN105951712A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5530039A (en) * | 1978-08-23 | 1980-03-03 | Kajima Corp | Method for constructing underground structures |
| CN102561361A (en) * | 2012-03-05 | 2012-07-11 | 中交第四航务工程局有限公司 | Ultra-deep T-shaped trench-wall pile in soft-toped hard-bottomed soil layer and trench forming method |
Non-Patent Citations (1)
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| 贺小强: ""地下连续墙直穿既有地下人防工程施工"", 《山西建筑》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106869110A (en) * | 2016-12-29 | 2017-06-20 | 上海市基础工程集团有限公司 | The construction method of underground continuous wall of existing underground structure |
| CN108018865A (en) * | 2017-12-01 | 2018-05-11 | 姚燕明 | The grooving technology of wall is led by the use of existing underpass as construction of diaphragm wall |
| CN108775009A (en) * | 2018-06-28 | 2018-11-09 | 中国建筑第四工程局有限公司 | A kind of measure method preventing grooving spillage and leak |
| CN109706915A (en) * | 2018-12-11 | 2019-05-03 | 北京建工土木工程有限公司 | The construction method of guide wall of underground continuous wall in a kind of tunnel |
| CN110387887A (en) * | 2019-06-28 | 2019-10-29 | 同济大学建筑设计研究院(集团)有限公司 | It is oriented to the construction method of partition wall and its construction method and foundation pit enclosure structure |
| CN110924428A (en) * | 2019-11-08 | 2020-03-27 | 中天建设集团有限公司 | Pile-forming construction method for cast-in-place pile to penetrate existing basement structure |
| CN112593546A (en) * | 2020-12-03 | 2021-04-02 | 中铁广州工程局集团有限公司 | Construction method for underground diaphragm wall to penetrate through underground structure |
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Application publication date: 20160921 |