CN108343071A - A kind of foundation pit supporting construction and construction method of steel sheet pile combined deposited pile - Google Patents
A kind of foundation pit supporting construction and construction method of steel sheet pile combined deposited pile Download PDFInfo
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- CN108343071A CN108343071A CN201810226871.3A CN201810226871A CN108343071A CN 108343071 A CN108343071 A CN 108343071A CN 201810226871 A CN201810226871 A CN 201810226871A CN 108343071 A CN108343071 A CN 108343071A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 144
- 239000010959 steel Substances 0.000 title claims abstract description 144
- 238000010276 construction Methods 0.000 title claims abstract description 113
- 239000002689 soil Substances 0.000 claims abstract description 30
- 238000009412 basement excavation Methods 0.000 claims abstract description 22
- 238000013461 design Methods 0.000 claims description 14
- 238000000034 method Methods 0.000 claims description 14
- 230000003014 reinforcing effect Effects 0.000 claims description 7
- 238000004140 cleaning Methods 0.000 claims description 6
- 239000002002 slurry Substances 0.000 claims description 6
- 238000005520 cutting process Methods 0.000 claims description 5
- 238000007689 inspection Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 238000000926 separation method Methods 0.000 claims description 4
- 238000004873 anchoring Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000012937 correction Methods 0.000 claims description 3
- 238000005516 engineering process Methods 0.000 claims description 3
- 238000002474 experimental method Methods 0.000 claims description 3
- 238000002955 isolation Methods 0.000 claims description 3
- 210000003205 muscle Anatomy 0.000 claims description 3
- 238000012360 testing method Methods 0.000 claims description 3
- 241001074085 Scophthalmus aquosus Species 0.000 claims description 2
- 238000005266 casting Methods 0.000 claims description 2
- 239000011435 rock Substances 0.000 abstract description 14
- 238000007789 sealing Methods 0.000 abstract description 5
- 230000004888 barrier function Effects 0.000 abstract description 3
- 230000002093 peripheral effect Effects 0.000 abstract description 3
- 230000001681 protective effect Effects 0.000 abstract description 2
- 230000015572 biosynthetic process Effects 0.000 abstract 1
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- 238000011065 in-situ storage Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
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- 238000003466 welding Methods 0.000 description 3
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- KQTVWCSONPJJPE-UHFFFAOYSA-N etridiazole Chemical compound CCOC1=NC(C(Cl)(Cl)Cl)=NS1 KQTVWCSONPJJPE-UHFFFAOYSA-N 0.000 description 1
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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
-
- 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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
-
- 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
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
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- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
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Abstract
The invention discloses a kind of foundation pit supporting constructions and construction method of steel sheet pile combined deposited pile, including the steel sheet pile of foundation pit shallow-layer and the bored concrete pile of deep layer to combine the supporting construction to be formed；The steel sheet pile uses snapping water-stopping steel sheet pile, and steel sheet pile cross section both ends are respectively arranged with card convex structure and the notch with card convex symmetrical configuration.The supporting construction and construction method be suitable for proposed place upper formation be banket, the aquifers such as weak soil or silt；Lower part is the geological condition of the hard soil body or decayed rock.N is the integer not less than 2.The supporting construction top uses steel sheet pile, can play a dual role of earth-retaining and sealing；Earth-retaining bored concrete pile is only arranged, it is not necessary that water-seal pile, saving construction cost is arranged in the hard soil layer in lower part or rock；The steel sheet pile later stage can pull out, environmentally protective, saving construction cost；After steel sheet pile construction, you can excavate, need not conserve, during shallow-layer soil excavation, while deep layer bored concrete pile is conserved；After steel sheet pile is extracted, barrier is not stayed, building peripheral conduits is facilitated to construct.
Description
Technical field
The present invention relates to the foundation pit supporting constructions and construction method of a kind of steel sheet pile combined deposited pile in civil engineering, belong to
In field of civil engineering, the deep foundation pit support suitable for architectural engineering, dyke building, pipeline engineering, subway engineering.
Background technology
Base pit engineering not only faces excavation earth-retaining, and faces water seepage prevention, but as the foundation pit supporting pile of temporary structure,
It is short using the period, of high cost.Therefore, shorten the foundation pit duration and reduce support pile cost, it has also become must solve the problems, such as, especially
Its in the proposed foundation pit place shallow-layer soil body be banket or loose silt, sand, and foundation pit place deep soil be hard soil or
When decayed rock excavation pit, the shallow-layer soil body not only needs that retaining support stake is arranged, it is also necessary to water seepage prevention stake be arranged；But deep layer
The hard soil body and decayed rock are not necessarily to water-seal pile.Conventional deep foundation pit support all uses the supporting construction of bored concrete pile combination water-seal pile
Form.
Bored concrete pile and water-seal pile are all constructed since ground, until the lowermost designed elevation.Water-seal pile is outside bored concrete pile
Side is constructed, and the supporting construction of two campsheds is formed.But for foundation pit shallow-layer because cutting depth is small, Water And Earth Pressures are smaller, if entire stake up and down
Body diameter is identical, this is bound to cause the wasting of resources；After filling pile construction, concrete need to conserve 28 days can excavation pit,
This is bound to cause time waste again.After foundation pit construction, after major structure of construction binds, rainwater, dirt used in whole building group
The pipelines such as water, electric power, heating power are all embedded along building periphery, and the supporting bored concrete pile constructed occupies pipeline construction position, also
Bored concrete pile need to be abolished, not only difficulty of construction is big for this, and results in waste of resources.
Chinese patent（Application number：CN201610949378.5）" a kind of construction method of deep foundation pit support " is disclosed,
It is characterized in that Larsen steel sheet pile and bored pile construction in same absolute altitude, are separately positioned on the different sections of foundation pit, and in Larsen
Water-seal pile is set on the outside of steel sheet pile and cast-in-situ bored pile, bracing members are set among two rows of Larsen steel sheet piles and cast-in-situ bored pile.This
Although kind of an engineering method steel sheet pile can be extracted, bracing members can be removed, and recycling has the disadvantages that：（1）Unresolved deep
Layer pattern foundation pit supporting structure is not required to the problem of setting water-seal pile, still not economical enough；（2）Bored concrete pile pile body is still started setting up from ground, after
Phase pipeline is embedded, it is still necessary to abolish bored concrete pile；（3）It is to banket and loose earth for foundation pit place shallow-layer, place deep layer is heavily fortified point
The case where pan soil body or decayed rock, Larsen steel sheet pile can not can not be formed effectively in inserting piling to the hard soil body and decayed rock
Foundation pit supporting construction.
Chinese patent（Application number：CN201710236901.4）Disclose a kind of " foundation pit branch that campshed is combined with steel sheet pile
Maintaining method ", including：Using several bored concrete piles as campshed, steel sheet pile, this method then are installed between two adjacent bored concrete piles
Organically it is combined with bored concrete pile supporting intensity height and the characteristics of steel sheet pile is easily installed dismounting.But still it has the following defects：（1）Cause
Bored concrete pile is arranged with steel sheet pile interval in the invention, therefore the maintenance problem of still unresolved bored concrete pile, and it is big still to occupy entire engineering
The part duration；（2）Steel sheet pile is arranged at intervals between bored concrete pile, because bored concrete pile cast in situs is formed, when bored concrete pile appearance is expanding
When situation, steel sheet pile will be unable to construct；（3）Bored concrete pile is arranged with steel sheet pile interval, and after excavation of foundation pit, stress occurs for bored concrete pile
After deformation, it certainly will so that steel sheet pile such as also bends at the deformations, is stuck between bored concrete pile, later stage steel sheet pile will be unable to extract.
Therefore, it can banket in shallow-layer there is an urgent need to one kind or loose earth, the field of the hard soil body of deep layer or decayed rock
Ground, design one kind can fully consider foundation pit earth-retaining and sealing requirement and shorten the construction period, saving construction cost, and will not give the later stage
The embedded foundation pit supporting construction and method for bringing constructional difficulties of pipeline.The foundation pit supporting construction of steel sheet pile combined deposited pile is this
Under the conditions of come into being, become and solve the problems, such as this effective ways.
Invention content
The present invention changes Larsen steel sheet pile on the basis of traditional Larsen steel sheet pile, bored concrete pile are individually used for pattern foundation pit supporting structure
Snap fit, and change the combining form and construction method of former supporting construction, form foundation pit shallow-layer soil body steel sheet pile earth-retaining
And sealing, the new supporting structure of foundation pit Deep Rock soil body bored concrete pile earth-retaining.Concrete engineering can according to soil body thickness and range,
Model and the diameter of driving depth and bored concrete pile, the strength grade of concrete and arrangement of reinforcement of steel sheet pile is determined by calculation；According to
The protection requirement of the cutting depth and surrounding enviroment of foundation pit, is arranged one or multi-channel inner support.
The object of the present invention is achieved like this：
A kind of foundation pit supporting construction of steel sheet pile combined deposited pile, including 2 groups of the steel sheet pile 1 of foundation pit shallow-layer and the bored concrete pile of deep layer
Close the supporting construction formed；
The steel sheet pile 1 uses snapping water-stopping steel sheet pile, and 1 cross section both ends of steel sheet pile are respectively arranged with 102 He of card convex structure
With 102 symmetrical notch 101 of card convex structure；
The steel sheet pile 1 is in stake top 1.0m H profile steel purlins 4 arranged below, and sectional dimension is determined according to calculating, while basis
Calculating and setting inner support 401；4 lower section of steel purlin is provided with steel purlin shelf bracket 5；Is provided among steel purlin 4
Support 3 together；
The cast-in-place concrete pile that the bored concrete pile 2 is formed using drill-pouring method or pressure filling；2 stake top of bored concrete pile is set
Concrete Guan Liang 7 is set, while according to calculating, concrete Guan Liang inner support is set；
The steel sheet pile 1 passes through concrete force transmitting board band 9 and 7 one-piece casting of bored concrete pile top concrete Guan Liang with bored concrete pile 2
It links together；It is provided with steel sheet pile separation layer 6 between the concrete force transmitting board band 9 and bored concrete pile 2；
Second support 8 is provided between the bored concrete pile top concrete Guan Liang 7；Second supports 8 both ends and concrete
Steel end plate 10 is provided between Guan Liang 7；
The inside of the bored concrete pile 2 is provided with concrete purlin 11, and third road support 12 is provided between concrete purlin 11；
The construction method of the foundation pit supporting construction of the steel sheet pile combined deposited pile, it is characterised in that including step of constructing as follows
Suddenly：
Step1. surveying setting-out：After levelling of the land, the coordinate of each steel sheet pile and bored concrete pile is measured, and makees detailed label,
The axis of measuring building structure simultaneously checks the exterior wall relationship of foundation pit supporting pile and hypogee structure, it is ensured that supporting construction is not
Influence the construction of hypogee structure；
Step2. support pile test pile：Report is surveyed in base area, selects the region of stratum big rise and fall, first experiment examination beat steel sheet pile with
Bored concrete pile is no less than 5, checks specific buried depth and the position of underground hard stratum, and then determines that the construction of every steel sheet pile is grown
Degree；Then the specific cutting depth on upper layer cubic metre of earth, the i.e. position of bored concrete pile hat bottom elevation are checked according to current specifications；
Step3. steel sheet pile construction：Steel sheet pile is according to fixed position, depth, and the position of corresponding foundation pit, surveying and locating
By root inserting piling steel sheet pile, and perform construction note；
Step4. filling pile construction：After steel sheet pile construction, bored concrete pile is according to excavation stock tank, slurry ditch → shield-tube embedment → brill
Machine is in place, hole bit correction → pore-forming, mud cycle, removes useless slurry, body refuse → first time borehole cleaning → inspection of quality → descending reinforcing cage
→ second of borehole cleaning → pours underwater concrete → pile process and carries out with steel conduit；
Step5. foundation pit first layer earth excavation：After waiting for filling pile construction, layering, piecemeal, symmetrical earth excavation, until
It is excavated to first of support bottom absolute altitude；
Step6. first of Construction of Supporting finishes, and after reaching design strength requirement, continues downward excavation construction, until construction
It is preced with bottom elevation to bored concrete pile；
Step7. patch isolation malthoid on the inside of steel sheet pile, abolishes bored concrete pile stake top concrete laitance, bored concrete pile Exposed reinforcement is gone out
Come, length reaches anchoring and requires, and then binds Guan Liang and power transmission Strip muscle, installs Guan Liang and force transmitting board band template, pours mixed
Solidifying soil, while second support is set；
Step8. after Guan Liang and second support reach design strength requirement, downward excavation construction, and be arranged according to design requirement
The roads N support, and wherein construction technology and method and second support phase is same.
Positive beneficial effect：The foundation pit shallow-layer of the present invention uses steel sheet pile, can not only play earth-retaining, but also can play the work of sealing
With；Because foundation pit top Water And Earth Pressures are smaller, using steel sheet pile supporting, support pile section is comparable small very in foundation pit deep support stake
It is more, supporting cost can be saved；When foundation pit deep soil is the hard soil body or elegance and talent rock, it is not necessary that water-seal pile, therefore, foundation pit is arranged
Bored concrete pile earth-retaining, saving construction cost is only arranged in deep support structure；Engineering site, because grout pile top mark height is certain in below ground
Depth, therefore, steel sheet pile of first constructing, bored concrete pile of constructing afterwards, to the end of filling pile construction, you can excavation pit first layer soil
Body, at this time the bored concrete pile of deep layer can be conserved, therefore, the entire duration of a project can be saved；After pit earthwork backfill, steel sheet pile is
It can pull out, environmentally protective while saving construction cost；According to bored concrete pile supporting, the construction of later stage architecture pipe needs to abolish, no
But waste of resource, and waste working measure and take, and after steel sheet pile is extracted, barrier is not stayed, and later stage building peripheral conduits is facilitated to apply
Work.
Description of the drawings
Fig. 1 is supporting construction diagrammatic cross-section in the present invention；
Fig. 2 is Steel Sheet Pile supporting construction floor map of the present invention；
Fig. 3 is main construction process figure in construction method of the present invention；
Fig. 4 is Steel Sheet Pile of the present invention and steel purlin connection figure；
Fig. 5 is load transfering strip figure between Steel Sheet Pile and bored concrete pile of the present invention；
Fig. 6 is bracing members and concrete Guan Liang connecting node figure one in the present invention；
Fig. 7 is bracing members and concrete Guan Liang connecting node figure two in the present invention.
It is in figure：Steel sheet pile 1, bored concrete pile 2, first support 3, steel purlin 4, steel purlin shelf bracket 5, steel sheet pile separation layer 6,
Concrete Guan Liang 7, second support 8, load transfering strip 9, steel end plate 10, concrete purlin 11, third road support 12.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, with the following group
Close the drawings and specific embodiments to the foundation pit supporting construction and construction method of steel sheet pile combined deposited pile proposed by the present invention make into
One step explanation.According to following explanation, advantages and features of the invention will become apparent from.It should be noted that attached drawing is all made of non-normalizing
Form use non-accurate ratio, only for the purpose of facilitating and clarifying the purpose of the embodiments of the invention.
Below constitutional diagram 1 to Fig. 7 steel sheet pile combined deposited piles that the present invention will be described in detail supporting construction and construction method.
It is characterized in that：It include mainly foundation pit shallow-layer steel sheet pile（1）, deep layer bored concrete pile（2）With vertically arranged inner support.
The foundation pit supporting construction and construction method of the steel sheet pile combined deposited pile of the present invention, basic ideas are：Root first
Place shallow-layer is further investigated according to geological exploration data to banket or point of loose earth and the hard soil layer of deep layer or decayed rock
Then cloth range and thickness calculate separately determining foundation pit shallow-layer steel sheet pile（1）With deep layer bored concrete pile（2）Length and section ruler
It is very little；After figure detailed design to be onstructed, live measuring determines the Specific construction position of steel sheet pile and bored concrete pile, and steel plate of first constructing
Stake, bored concrete pile of constructing afterwards；Then the excavation pit soil body, and required according to design drawing, construction steel purlin（4）, steel shelf bracket
（5）And first of support（3）；Continue to excavate the soil body downwards, steel sheet pile separation layer of constructing（6）, and it is mixed at the top of bored concrete pile of constructing
Solidifying soil Guan Liang（7）, concrete load transfering strip between steel sheet pile and bored concrete pile（9）It is supported with second（8）；Continue to excavate rock downwards
The soil body, and required according to design drawing, concrete purlin on the inside of construction bored concrete pile（11）And embedded supporting steel end plate (10) and the
Three inner supports（12）；Continue to excavate Rock And Soil downwards, until excavating the foundation pit bottom absolute altitude to design.
The supporting construction and construction method of the steel sheet pile combined deposited pile of the present invention, specifically include following steps：
Step1. surveying setting-out after levelling of the land, measures the coordinate of each steel sheet pile and bored concrete pile, and makees detailed label；
The axis of measuring building structure simultaneously checks the exterior wall relationship of foundation pit supporting pile and hypogee structure, it is ensured that supporting construction is not
Influence the construction of hypogee structure；The position setting-out for carrying out pile foundation to the principle of part from entirety, planning row are pressed in stake position setting-out
When bus or train route line, sidewalk is made to be maintained a certain distance with the position of steel sheet pile and bored concrete pile, in order to avoid influence piling and pore-forming hole wall
Stablize.
Step2. support pile test pile.Report is surveyed in base area, selects the region of stratum big rise and fall, and steel plate is broken in first experiment examination
Stake and bored concrete pile are no less than 5, check specific buried depth and the position of underground hard stratum, and then further determine that every steel sheet pile
Construction length.Then the specific cutting depth on upper layer cubic metre of earth, i.e. bored concrete pile top concrete Guan Liang are checked according to current specifications
The position of bottom absolute altitude.Steel sheet pile rejects connection fore shaft rust to steel sheet pile before piling using loop wheel machine band vibration hammer injection by root inspection
It loses, deform serious stake, just can be used after failure is to be trimmed, the preceding grease in the fore shaft of sheet pile of piling is beaten with facilitating
Enter to extract；Gradient of the monitoring per pile is measured during inserting piling at any time and is no more than 2%, when deflection is excessive cannot be with pulling together method tune
Timing is pulled up and is beaten again.
Step3. steel sheet pile construction.Steel sheet pile is according to fixed position, depth, to correspond to the position of foundation pit, by correspondence
Sideline in foundation pit surveying and locating by root inserting piling steel sheet pile, and perform construction note.Steel sheet pile injection squeezes into method using screen-type,
10 ~ 20 sheet piles are in a row inserted into saddle when construction, it is in screen shape, then injection again, usually by screen panel both ends to make it
One group of steel sheet pile is beaten to designed elevation, and strictly controls verticality, and electricity consumption solid welding is scheduled in steel purlin, then it is intermediate in order
1/3 or 1/2 steel sheet pile height is divided to squeeze into.
Step4. filling pile construction.After steel sheet pile construction, bored concrete pile is according to excavation stock tank, slurry ditch → shield-tube embedment
→ drilling machine is in place, hole bit correction → pore-forming, mud cycle, removes useless slurry, body refuse → first time borehole cleaning → inspection of quality → lower steel
The process that muscle cage and steel conduit → second of borehole cleaning → pour underwater concrete → pile carries out.
Step5. foundation pit first layer earth excavation.After waiting for filling pile construction, layering, piecemeal, symmetrical earth excavation,
Until being excavated to first layer support bottom absolute altitude.Construction steel purlin, wherein steel purlin use the Q235B grades of shaped steel of H400 × 400, steel to enclose
Q235B grades are arranged under purlin, and [the equilateral right angled triangle bracket of 32b channel steels, the triangular right-angle length of side are more than the wide 200mm of steel purlin；Steel
After the completion of purlin and the construction of steel bracket, sets up first of support and be fixed in steel purlin by welding or bolt.
Step6. first layer Construction of Supporting finishes, and after application prestressing force reaches design requirement, continues to excavate ground downwards
Body, until construction to concrete is preced with bottom elevation.
Step7. the cementing isolation malthoid of II type pitch binder applied is pasted on the inside of steel sheet pile；Bored concrete pile stake top concrete laitance is abolished,
Bored concrete pile Exposed reinforcement is come out, length reaches anchoring and requires, and load transfering strip reinforcing bar is then bound, wherein in the use of load transfering strip reinforcing bar
Layer is up and down HPB grades 16, and outer layer is HPB grades 18, and spacing is 200mm；Guan Liang reinforcing bar is bound, while in Guan Liang reinforcing bar
Support connection steel end plate is buried in cage, it is -600 × 600 × 20 that wherein steel end plate, which uses Q235B steel, section,；Reinforcing bar is bound
After, supporting module pours Guan Liang and load transfering strip concrete；Second support is set up, wherein second supporting welding is pre-
On the steel end plate buried, it is made to be closely joined together with concrete Guan Liang.
Step8. Guan Liang and power transmission band strength reach design requirement, and after second support applies prestressing force, continuation is opened downwards
Excavation construction, according to the construction method of above-mentioned second support and Guan Liang, is applied until excavating Rock And Soil to third road supports bottom absolute altitude
Work cast-in-place pile concrete purlin and the support of third road.
Step9. wait for that concrete purlin reaches design strength, after the support of third road applies prestressing force, continuation is opened downwards
Rock And Soil is dug, until foundation pit bottom absolute altitude；The subsequent construction method of foundation pit is consistent with traditional foundation ditch construction method, repeats no more.
The foundation pit shallow-layer of the present invention uses steel sheet pile, can not only play earth-retaining, but also can play the role of sealing；Because of foundation pit top
Water And Earth Pressures are smaller, and using steel sheet pile supporting, support pile section is comparable much smaller in foundation pit deep support stake, can save supporting
Cost；When foundation pit deep soil is the hard soil body or elegance and talent rock, it is not necessary that water-seal pile is arranged, therefore, foundation pit deep support structure
Only setting bored concrete pile earth-retaining, saving construction cost；Engineering site, because of the grout pile top mark height depth certain in below ground, because
This, steel sheet pile of first constructing, bored concrete pile of constructing afterwards, to the end of filling pile construction, you can the first layer soil body of excavation pit, at this time deep layer
Bored concrete pile can be conserved, therefore, the entire duration of a project can be saved；After pit earthwork backfill, steel sheet pile can be pulled out, green
Environmental protection while saving construction cost；According to bored concrete pile supporting, the construction of later stage architecture pipe needs to abolish, not only waste of resource,
And waste working measure takes, and after steel sheet pile is extracted, barrier is not stayed, facilitates later stage building peripheral conduits construction.
Basic principles and main features and advantages of the present invention described above and that describe the present invention, only of the invention
Preferred embodiment is not intended to limit the invention, all within the spirits and principles of the present invention made by it is any modification, etc.
With replace and improve etc., should be included in the present invention claims protection domain within.
Claims (8)
1. a kind of foundation pit supporting construction of steel sheet pile combined deposited pile, it is characterised in that：Steel sheet pile including foundation pit shallow-layer and depth
The bored concrete pile of layer combines the supporting construction to be formed.
2. a kind of foundation pit supporting construction of steel sheet pile combined deposited pile according to claim 1, it is characterised in that：Described
Steel sheet pile use snapping water-stopping steel sheet pile, steel sheet pile cross section both ends be respectively arranged with card convex structure and with card convex symmetrical configuration
Notch.
3. a kind of foundation pit supporting construction of steel sheet pile combined deposited pile according to claim 1, it is characterised in that：Described
In stake top 1.0m H profile steel purlins arranged below, sectional dimension is determined according to calculating steel sheet pile, while according to being propped up in calculating and setting
Support；It is provided with steel purlin shelf bracket below the steel purlin；First of support is provided among steel purlin.
4. a kind of foundation pit supporting construction of steel sheet pile combined deposited pile according to claim 1, it is characterised in that：Described
The cast-in-place concrete pile that bored concrete pile is formed using drill-pouring method or pressure filling；The bored concrete pile stake top setting concrete is preced with
Beam, while according to calculating, concrete Guan Liang inner support is set.
5. a kind of foundation pit supporting construction of steel sheet pile combined deposited pile according to claim 1, it is characterised in that：Described
Steel sheet pile is linked together with bored concrete pile by concrete force transmitting board band and bored concrete pile top concrete Guan Liang one-piece casting；It is described
Concrete force transmitting board band and bored concrete pile between be provided with steel sheet pile separation layer.
6. a kind of foundation pit supporting construction of steel sheet pile combined deposited pile according to claim 1, it is characterised in that：Described
Second support is provided between bored concrete pile top concrete Guan Liang；Second supports to be provided between both ends and concrete Guan Liang
Steel end plate.
7. a kind of foundation pit supporting construction of steel sheet pile combined deposited pile according to claim 1, it is characterised in that：Described
It is provided with concrete purlin on the inside of bored concrete pile, the support of third road is provided between concrete purlin.
8. the construction method of the foundation pit supporting construction of steel sheet pile combined deposited pile as described in claim 1, it is characterised in that packet
Include following construction procedure：
Step1. surveying setting-out：After levelling of the land, the coordinate of each steel sheet pile and bored concrete pile is measured, and makees detailed label,
The axis of measuring building structure simultaneously checks the exterior wall relationship of foundation pit supporting pile and hypogee structure, it is ensured that supporting construction is not
Influence the construction of hypogee structure；
Step2. support pile test pile：Report is surveyed in base area, selects the region of stratum big rise and fall, first experiment examination beat steel sheet pile with
Bored concrete pile is no less than 5, checks specific buried depth and the position of underground hard stratum, and then determines that the construction of every steel sheet pile is grown
Degree；Then the specific cutting depth on upper layer cubic metre of earth, the i.e. position of bored concrete pile hat bottom elevation are checked according to current specifications；
Step3. steel sheet pile construction：Steel sheet pile is according to fixed position, depth, and the position of corresponding foundation pit, surveying and locating
By root inserting piling steel sheet pile, and perform construction note；
Step4. filling pile construction：After steel sheet pile construction, bored concrete pile is according to excavation stock tank, slurry ditch → shield-tube embedment → brill
Machine is in place, hole bit correction → pore-forming, mud cycle, removes useless slurry, body refuse → first time borehole cleaning → inspection of quality → descending reinforcing cage
→ second of borehole cleaning → pours underwater concrete → pile process and carries out with steel conduit；
Step5. foundation pit first layer earth excavation：After waiting for filling pile construction, layering, piecemeal, symmetrical earth excavation, until
It is excavated to first of support bottom absolute altitude；
Step6. first of Construction of Supporting finishes, and after reaching design strength requirement, continues downward excavation construction, until construction
It is preced with bottom elevation to bored concrete pile；
Step7. patch isolation malthoid on the inside of steel sheet pile, abolishes bored concrete pile stake top concrete laitance, bored concrete pile Exposed reinforcement is gone out
Come, length reaches anchoring and requires, and then binds Guan Liang and power transmission Strip muscle, installs Guan Liang and force transmitting board band template, pours mixed
Solidifying soil, while second support is set；
Step8. after Guan Liang and second support reach design strength requirement, downward excavation construction, and be arranged according to design requirement
The roads N support, and wherein construction technology and method and second support phase is same.
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| CN108842819A (en) * | 2018-09-07 | 2018-11-20 | 中国能源建设集团安徽电力建设第工程有限公司 | A kind of urban track traffic cable run method for tunnel construction |
| CN109505299A (en) * | 2018-12-28 | 2019-03-22 | 广州市建筑科学研究院新技术开发中心有限公司 | Recoverable version Retaining Structure with Double-row Piles |
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| CN113266362A (en) * | 2021-05-25 | 2021-08-17 | 中铁四局集团第三建设有限公司 | Top pipe cover excavation construction method for penetrating through existing dense anchor cable area |
| CN113266392A (en) * | 2021-05-25 | 2021-08-17 | 中铁四局集团第三建设有限公司 | Pipe jacking construction method for penetrating through existing anchor cable group |
| CN113622421A (en) * | 2021-08-04 | 2021-11-09 | 深圳宏业基岩土科技股份有限公司 | Anchor cable arrangement structure of steel sheet pile slope protection area |
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| CN115110535A (en) * | 2022-07-20 | 2022-09-27 | 山西四建集团有限公司 | Comprehensive construction method for foundation pit construction |
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