CN110080249A - A kind of pressure filling formula Diaphragm Wall Support Structure and its construction method - Google Patents
A kind of pressure filling formula Diaphragm Wall Support Structure and its construction method Download PDFInfo
- Publication number
- CN110080249A CN110080249A CN201910515090.0A CN201910515090A CN110080249A CN 110080249 A CN110080249 A CN 110080249A CN 201910515090 A CN201910515090 A CN 201910515090A CN 110080249 A CN110080249 A CN 110080249A
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- China
- Prior art keywords
- wall
- construction
- work
- rotary digging
- word steel
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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
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Abstract
The invention discloses a kind of pressure filling formula Diaphragm Wall Support Structure and its construction methods, its main feature is that ground-connecting-wall of the supporting construction by several width interpolation " work " word steel, it is formed by overlapping between its two adjacent width ground-connecting-wall using rotary digging stake, form the building enclosure being integrated without cold seam water-stop curtain and earth-retaining, several " work " word steel that the ground-connecting-wall and rotary digging stake interpolation are engaged by crotch fore shaft, ground-connecting-wall is constructed using skip frame, rotary digging stake drilling and forming hole is used between two width, forms the building enclosure being integrated without cold seam water-stop curtain and earth-retaining.The present invention has the continuous barrier performance of good entirety compared with prior art, and structure is simple, easy for construction, is particularly suitable for surrounding enviroment complexity, existing building is more, and excavating sideline is apart from the closer Deep Foundation Pit Supporting Project of red line.
Description
Technical field
The present invention relates to Base hole supporting technology field, specifically a kind of pressure filling formula Diaphragm Wall Support Structure and its
Construction method.
Background technique
With the continuous expansion of China's urban construction scale, foundation pit technology constantly develops toward deep big foundation pit, especially exists
In subway work project, the development of underground continuous wall construction technique is either economically or technically all to the hair of the underground space
Exhibition plays the role of very important.Diaphram wall is used widely in deep basal pit, the wall of diaphragm wall have rigidity it is big,
Intensity is high, and barrier performance is good, and Construction Vibration is small, low noise, the advantages that periphery soil body undisturbed, is adapted to different soil
Layer, such as soft layer, sandy gravel stratum, various soft rocks etc..
Currently, the construction of diaphram wall is generally used dedicated grooving equipment, under conditions of mud off, along depth
Excavation of foundation pit goes out long and narrow deep trouth together, after clear slot, steel reinforcement cage is hung in slot, then concrete perfusion, forms a unit groove
Section uses rigidity or flexible joint, is allowed to form continuous reinforced concrete wall, can be used as foundation pit and open between slot section and slot section
Dig the provisional and permanent soil-baffling structure with hypogee.
The construction of diaphragm wall of the prior art is there is the joint quality between each slot section is more difficult to control, knot easy to form
Structure weak spot, if construction method is improper, the problem of adjacent slot section is likely to occur misalignment and leak, and also project cost is high,
It is not economical enough.
Summary of the invention
The purpose of the present invention is provide in view of the deficiencies of the prior art a kind of pressure filling formula Diaphragm Wall Support Structure and
Its construction method, the building enclosure being formed by overlapping using the rotary digging stake and adjacent diaphram wall of interpolation fashioned iron are had good whole
The continuous barrier performance of body, structure is simple, easy for construction, and Steel Reinforced Concrete Members can reduce member section, and economic benefit is aobvious
It writing, without carrying out connector processing, greatly reduces the risk of leakage, be particularly suitable for surrounding enviroment complexity, existing building is more,
Excavating sideline is apart from the closer Deep Foundation Pit Supporting Project of red line, and not only speed of application is fast, engineering cost economy, and quality can
Lean on, barrier performance it is good.
The object of the present invention is achieved like this: a kind of pressure filling formula Diaphragm Wall Support Structure, its main feature is that the supporting
Structure is overlapped between two adjacent width diaphram walls by the diaphram wall of several width interpolation " work " word steel using rotary digging stake
It forms, forms the building enclosure being integrated without cold seam water-stop curtain and earth-retaining, the diaphram wall and rotary digging stake interpolation are by curved
Several " work " word steel of hook lock mouth occlusion；The crotch fore shaft is to be symmetricly set on " work " word steel two sides, and be with " work " word steel
Welding.
The diaphram wall and rotary digging stake are perfused using ultra-retardation concrete, and the length of overlapping part is 0.2~
0.3m, the cross-sectional width of the rotary digging stake diameter > diaphram wall.
A kind of construction method for pressing filling formula Diaphragm Wall Support Structure, its main feature is that diaphram wall is applied using skip frame
Work uses rotary digging stake drilling and forming hole between two width, and pours into ultra-retardation concrete, and " work " word steel is inserted into before concrete initial set,
And be engaged with " work " word steel of diaphram wall, the building enclosure being integrated without cold seam water-stop curtain and earth-retaining is formed, is specifically applied
Work includes the following steps:
(1), construction of diaphragm wall
A, guide channel is excavated
Construction layout is carried out to diaphram wall center line according to coordinate basis point and design requirement, then excavates guide channel.
B, it builds and leads wall
Wall is led using monolithic reinforced-concrete structures masonry before construction of diaphragm wall.
C, slurry coat method is prepared
NV-1 sodium bentonite in powder and dispersing agent, sodium hydroxymethyl cellulose and water are configured by 100:5:0.2:1000 weight ratio
Stand-by at slurry coat method, the dispersing agent is Na2CO3Or NaHCO3。
D, trenching construction and grooving quality testing
According to design requirement by diaphram wall framing, a length of 3 ~ 5m injects retaining wall after removing guide channel completely before excavating
Mud, when grooving, must assure that cell wall verticality.
E, the clear sediment of slurry is changed
It is grabbed bucket clear bottom using chute forming machine, is subject to sampling test and slot bottom sediment, examine clear bottom whether qualified.
F, casting concrete
It hangs and pours frame, pour the diaphram wall of ultra-retardation concrete in slot section using two conduits, the extra retarded set is mixed
Retarding time >=60h of soil；The conduit mouth is 30 ~ 50cm away from bottom hole；The water proof ball that diameter is Φ 250mm is placed in the conduit
Gallbladder.
G, it is inserted into fashioned iron
Several " work " word steel that underthrust is engaged by crotch fore shaft before concrete initial set, the crotch lock of every width diaphram wall two sides
Mouth applies butter and wraps up oilpaper protection, in case being connected with interior " work " word steel for being inserted in rotary digging stake.
(2), the construction of rotary digging stake
The construction rotary digging stake between the diaphram wall of adjacent two width, the rotary digging stake use rotary digging drilling and forming hole, routinely bore
Hole pouring pile successively carries out shield-tube embedment, telephone-moving positioning, milling drilling, drilled-hole inspecting, borehole cleaning and casting concrete process
Construction, is inserted into " work " word steel before concrete initial set, and is adjacent to " work " word steel of lower diaphragm wall with interior be inserted in and is connected.
(3), the construction of soil-baffling structure
Alternately operating successively is carried out to diaphram wall and rotary digging stake by above-mentioned (one)~(two) step, until completing entire
Continuous waterproof, the supporting construction of earth-retaining.
The present invention has the continuous barrier performance of good entirety compared with prior art, and structure is simple, easy for construction, by
It not being limited by reinforcing bar steel ratio in fashioned iron, the rigidity of Steel Reinforced Concrete Members is higher than the reinforced concrete member of same shape,
Thus it can reduce member section, remarkable in economical benefits, due to comparing existing Diaphragm Wall without carrying out connector processing
Speed of application faster, diaphram wall between rotary digging stake occlusion compared to routine interlocking pile, since the latter is mostly circular cross-section stake,
Since seam is more, there are the risks of leakage.And the former connector is then relatively smaller, is particularly suitable for surrounding enviroment complexity, existing building
Object is more, and excavating sideline is apart from the closer Deep Foundation Pit Supporting Project of red line, and not only speed of application is fast, engineering cost economy, Er Qiezhi
Amount is reliable, barrier performance is good.
Detailed description of the invention
Fig. 1 is supporting construction schematic diagram of the invention；
Fig. 2 is Fig. 1 top view；
Fig. 3 is fore shaft occlusion structure schematic diagram；
Fig. 4 is construction process figure of the invention.
Specific embodiment
Refering to 1 ~ Fig. 2 of attached drawing, supporting construction of the invention after diaphram wall 1 interpolation " work " word steel 3 and rotary digging stake 2 by inserting
" work " word steel 3 form, diaphram wall 1 and rotary digging stake 2 are perfused using ultra-retardation concrete, and 2 underground diameter > of rotary digging stake connects
The horizontal cross-section width of continuous wall 1, the crotch connector 6 are arranged in 3 two sides of " work " word steel, and are welding with " work " word steel 3；It is described
Diaphram wall 1 and rotary digging stake 2 are perfused using ultra-retardation concrete, and the length of overlapping part 5 is 0.2~0.3m.
Refering to attached drawing 3, the crotch fore shaft 6 is welding with " work " word steel 3 to be symmetricly set on 3 two sides of " work " word steel,
Adjacent two " work " words steel 3 is connected by two sides crotch fore shaft 6.
With the embodiment of a certain foundation pit enclosure, present invention is further described in detail and explanation below:
Embodiment 1
Refering to attached drawing 4, chute forming machine grooving is used along excavation line direction, pours into ultra-retardation concrete, and is inserted before concrete initial set
Enter " work " word steel 3, engaged by crotch fore shaft 6 between " work " word steel 3 and " work " word steel 3, every width diaphram wall 1 retains
It is inserted after last root " work " word steel 3, diaphram wall 1 is constructed using skip frame, 2 drilling and forming hole of rotary digging stake is used between two width, and
Pour into ultra-retardation concrete, be inserted into before concrete initial set " work " word steel 3 and in diaphram wall 1 after slotting " work " word steel 3
It is engaged, forms the building enclosure being integrated without cold seam water-stop curtain and earth-retaining, Specific construction includes the following steps:
(1), construction of diaphragm wall
A, guide channel is excavated
Construction layout is carried out to the center line of diaphram wall 1 according to coordinate basis point and design requirement, then excavates guide channel.
B, it builds and leads wall
Before carrying out diaphram wall 1 and constructing, it should first build and lead wall, lead wall using monolithic reinforced-concrete structures, lead wall and apply
Work setting-out is to lead center line of wall with the center line of diaphram wall 1, and width is 4cm wider than diaphram wall 1.
C, slurry coat method is prepared
NV-1 sodium bentonite in powder and dispersing agent, sodium hydroxymethyl cellulose and water are configured by 100:5:0.2:1000 weight ratio
It is stand-by at slurry coat method.
D, trenching construction and grooving quality testing
According to design requirement by 1 framing of diaphram wall, width is long to be no more than 6m, generally 3m ~ 5m, will construct in guide channel before excavating
Rubbish is removed clean, injects mud, and when grooving must assure that cell wall verticality.
E, the clear sediment of slurry is changed
It is grabbed bucket clear bottom using chute forming machine, whether clear bottom is qualified, is subject to sampling test and slot bottom sediment.
F, casting concrete
It hangs and pours frame and connect conduit, using two conduits, conduit mouth is about 30 ~ 50cm away from bottom hole, it should not be too large or too small,
The water proof bladders that sphere diameter is Φ 250mm is put into conduit, concrete uses extra retarded set mixed mud, retarding time >=60h.
G, it is inserted into fashioned iron
" work " word steel 3 is inserted into before the concrete initial set of I slot section and II slot section, crotch fore shaft 6 is welded in 3 two sides of " work " word steel,
Surface iron rust should be removed before 3 underthrust of " work " word steel, and is applied butter at 6 position of crotch fore shaft and wrapped oilpaper protection, to avoid
The pollution of concrete butt joint position.
(2), the construction of rotary digging stake
After I slot section and II slot section initial set, corresponding rotary digging stake 2 is carried out between adjacent two width diaphram wall 1 and is constructed, rotary digging
Stake 2 is using the forming hole methods of rotary diggings drilling, routinely cast-in-situ bored pile successively shield-tube embedment, telephone-moving positioning, milling drilling, pore-forming
Detection, borehole cleaning, casting concrete sequence construction, before the concrete initial set of rotary digging stake 2 be inserted into " work " word steel 3, and be adjacent to
" work " word steel 3 in lower diaphragm wall 1 is connected.
(3), the construction of soil-baffling structure
Alternately operating successively is carried out to diaphram wall 1 and rotary digging stake 2 by above-mentioned (one)~(two) step, until completing whole
A continuous waterproof, the supporting construction of earth-retaining.
Above only the present invention is further illustrated, and not to limit this patent, all is equivalence enforcement of the present invention,
It is intended to be limited solely by within the scope of the claims of this patent.
Claims (3)
1. a kind of pressure filling formula Diaphragm Wall Support Structure, it is characterised in that the supporting construction is by several width interpolation " work " word steel
Diaphram wall is formed by overlapping between two adjacent width diaphram walls using rotary digging stake, formed without cold seam water-stop curtain and
Several " work " word steel that the building enclosure that earth-retaining is integrated, the diaphram wall and rotary digging stake interpolation are engaged by crotch fore shaft；
The crotch fore shaft is welding with " work " word steel to be symmetricly set on " work " word steel two sides.
2. pressing filling formula Diaphragm Wall Support Structure according to claim 1, it is characterised in that the diaphram wall and rotation
It digs stake to be perfused using ultra-retardation concrete, the length of overlapping part is 0.2~0.3m, and the underground the rotary digging stake diameter > is continuous
The cross-sectional width of wall.
3. pressing the construction method of filling formula Diaphragm Wall Support Structure described in a kind of claim 1, it is characterised in that underground is continuous
Wall is constructed using skip frame, rotary digging stake drilling and forming hole is used between two width, and pour into ultra-retardation concrete, is inserted before concrete initial set
Enter " work " word steel, and be engaged with " work " word steel of diaphram wall, formation is gone along with sb. to guard him without cold seam water-stop curtain with what earth-retaining was integrated
Structure, Specific construction include the following steps:
(1), construction of diaphragm wall
A, guide channel is excavated
Construction layout is carried out to diaphram wall center line according to coordinate basis point and design requirement, then excavates guide channel；
B, it builds and leads wall
Wall is led using monolithic reinforced-concrete structures masonry before construction of diaphragm wall；
C, slurry coat method is prepared
NV-1 sodium bentonite in powder and dispersing agent, sodium hydroxymethyl cellulose and water are configured by 100:5:0.2:1000 weight ratio
Stand-by at slurry coat method, the dispersing agent is Na2CO3Or NaHCO3；
D, trenching construction and grooving quality testing
According to design requirement by diaphram wall framing, a length of 3 ~ 5m injects retaining wall after removing guide channel completely before excavating
Mud, when grooving, must assure that cell wall verticality；
E, the clear sediment of slurry is changed
It is grabbed bucket clear bottom using chute forming machine, is subject to sampling test and slot bottom sediment, examine clear bottom whether qualified；
F, casting concrete
It hangs and pours frame, pour the diaphram wall of ultra-retardation concrete in slot section using two conduits, the extra retarded set is mixed
Retarding time >=60h of soil；The conduit mouth is 30 ~ 50cm away from bottom hole；The water proof ball that diameter is Φ 250mm is placed in the conduit
Gallbladder；
G, it is inserted into fashioned iron
Several " work " word steel that underthrust is engaged by crotch fore shaft before concrete initial set, the crotch of every width diaphram wall two sides
Fore shaft applies butter and wraps up oilpaper protection, in case being connected with interior " work " word steel for being inserted in rotary digging stake；
(2), the construction of rotary digging stake
The construction rotary digging stake between the diaphram wall of adjacent two width, the rotary digging stake use rotary digging drilling and forming hole, routinely bore
Hole pouring pile successively carries out shield-tube embedment, telephone-moving positioning, milling drilling, drilled-hole inspecting, borehole cleaning and casting concrete process
Construction, is inserted into " work " word steel before concrete initial set, and is adjacent to " work " word steel of lower diaphragm wall with interior be inserted in and is engaged；
(3), the construction of soil-baffling structure
Alternately operating successively is carried out to diaphram wall and rotary digging stake by above-mentioned (one)~(two) step, until completing entire
Continuous waterproof, the supporting construction of earth-retaining.
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| CN201910515090.0A CN110080249A (en) | 2019-06-14 | 2019-06-14 | A kind of pressure filling formula Diaphragm Wall Support Structure and its construction method |
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| CN201910515090.0A CN110080249A (en) | 2019-06-14 | 2019-06-14 | A kind of pressure filling formula Diaphragm Wall Support Structure and its construction method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900447A (en) * | 2021-01-19 | 2021-06-04 | 深圳宏业基岩土科技股份有限公司 | Construction method for milling deep-layer stirring curing waterproof curtain and combining with rotary digging pile |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001220763A (en) * | 2000-02-08 | 2001-08-17 | Nippon Steel Corp | Draining method for underground wall and underground wall constructed using it |
| CN104631433A (en) * | 2015-01-13 | 2015-05-20 | 金天德 | Box-shaped steel plate meshing continuous wall structure system and construction technology |
| CN204475311U (en) * | 2015-01-13 | 2015-07-15 | 金天德 | The occlusion structure of box-shaped steel plate occlusion diaphragm wall |
| CN106088102A (en) * | 2016-06-22 | 2016-11-09 | 南京工业大学 | Lattice combined steel plate pile cement-soil composite pile and construction method thereof |
| CN106638616A (en) * | 2016-11-30 | 2017-05-10 | 上海市机械施工集团有限公司 | Foundation pit engineering steel box cement-soil diaphragm wall and construction method thereof |
| CN109403338A (en) * | 2018-10-12 | 2019-03-01 | 江苏省送变电有限公司 | A kind of assembly lattice configuration steel TRD engineering method diaphram wall and its construction method |
| CN210288421U (en) * | 2019-06-14 | 2020-04-10 | 上海智平基础工程有限公司 | Pressure irrigation type underground continuous wall supporting structure |
-
2019
- 2019-06-14 CN CN201910515090.0A patent/CN110080249A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001220763A (en) * | 2000-02-08 | 2001-08-17 | Nippon Steel Corp | Draining method for underground wall and underground wall constructed using it |
| CN104631433A (en) * | 2015-01-13 | 2015-05-20 | 金天德 | Box-shaped steel plate meshing continuous wall structure system and construction technology |
| CN204475311U (en) * | 2015-01-13 | 2015-07-15 | 金天德 | The occlusion structure of box-shaped steel plate occlusion diaphragm wall |
| CN106088102A (en) * | 2016-06-22 | 2016-11-09 | 南京工业大学 | Lattice combined steel plate pile cement-soil composite pile and construction method thereof |
| CN106638616A (en) * | 2016-11-30 | 2017-05-10 | 上海市机械施工集团有限公司 | Foundation pit engineering steel box cement-soil diaphragm wall and construction method thereof |
| CN109403338A (en) * | 2018-10-12 | 2019-03-01 | 江苏省送变电有限公司 | A kind of assembly lattice configuration steel TRD engineering method diaphram wall and its construction method |
| CN210288421U (en) * | 2019-06-14 | 2020-04-10 | 上海智平基础工程有限公司 | Pressure irrigation type underground continuous wall supporting structure |
Non-Patent Citations (1)
| Title |
|---|
| 黄运飞: "《深基坑工程实用技术》", 兵器工业出版社, pages: 268 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112900447A (en) * | 2021-01-19 | 2021-06-04 | 深圳宏业基岩土科技股份有限公司 | Construction method for milling deep-layer stirring curing waterproof curtain and combining with rotary digging pile |
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