CN106638732A - Underground foundation pile pipe-roof support structure and construction method thereof - Google Patents
Underground foundation pile pipe-roof support structure and construction method thereof Download PDFInfo
- Publication number
- CN106638732A CN106638732A CN201710019635.XA CN201710019635A CN106638732A CN 106638732 A CN106638732 A CN 106638732A CN 201710019635 A CN201710019635 A CN 201710019635A CN 106638732 A CN106638732 A CN 106638732A
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- Prior art keywords
- foundation pile
- pipe
- underground
- steel pipe
- supporting construction
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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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
- E02D37/00—Repair of damaged foundations or foundation structures
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G23/00—Working measures on existing buildings
- E04G23/06—Separating, lifting, removing of buildings; Making a new sub-structure
Abstract
The invention discloses an underground foundation pile pipe-roof support structure, comprising a foundation pile and horizontal pipe-roofs arranged around the foundation pile, and the horizontal pipe-roofs comprises support pipes, support pipe attachments, an embedded reinforcing attachment and filler; the support pipes are arranged at both sides of the foundation pile horizontally, and connected by the support pipe attachments to form a through cavity; the embedded reinforcing attachment is arranged in the cavity transversely, and passes through a location hole on the foundation pile; the filler is filled in the cavity. The invention also discloses a construction method of the underground foundation pile pipe-roof support structure. In the underground foundation pile pipe-roof support structure and the construction method thereof disclosed by the invention, the support pipes, the support pipe attachments, the embedded reinforcing attachment and the filler are arranged around the foundation pile to form the horizontal pipe-roofs so as to achieve the purpose of transferring the support and load of the foundation pile; the safety risk of this method is low; at the same time, there is no limit to the span of new underground structure when this method is used for underpinning the foundation pile, with obvious advantages.
Description
Technical field
The present invention relates to underground construction technical field, in particular to a kind of underground foundation pile pipe curtain supporting construction and construction
Method.
Background technology
At present, no matter at home or external with a large amount of expansion of underground engineering construction, existing engineering structure lower section is again
The case for implementing underground engineering is more and more.For the existing engineering using pile foundation, need to carry out pile foundation underpinning to carry
It is consequently increased for the example of newly-built underground engineering passage.
The key problem of pile foundation underpinning is the conversion of existing pile foundation load, i.e., will be existing using actively or passively underpinning technique
Load on pile foundation is transformed on newly-built structure.In general, present load conversion is by newly building base in the both sides of existing foundation pile 1
Stake 2 after, then two newly build pour on foundation pile 2 transform beams 3 formed door type structure, so as to be completed to underpin, concrete structure such as Fig. 1
Shown in.
It is clear that door type structure span is bigger, enforcement difficulty is underpined also bigger.In view of newly building door during pile foundation underpinning
Formula structural span is greater than the width of newly-built underground structure, thus for it is this kind of underpin mode for, limit to a certain extent
The horizontal span of newly-built underground structure, has certain restriction to constructing large space underground structure.
Meanwhile, if door type structure is constructed in the lower section of existing foundation pile structure without space, or need to carry out underground in advance dark
Operation is dug, entirety can be caused to underpin cost and the relative raising of implement general plan.
The content of the invention
It is an object of the present invention to provide a kind of underground foundation pile pipe curtain supporting construction, can underground foundation pile be realized supporting and
Load transfer and the span of newly-built underground structure is not below limited.
For achieving the above object, the underground foundation pile pipe curtain supporting construction designed by the present invention includes foundation pile and is arranged on described
Horizontal tube curtain around foundation pile, the horizontal tube curtain includes that connector and filling are strengthened in a trustship, rest pipe connections, implantation
Thing；Described trustship is horizontally set on the foundation pile both sides, and connects to form an insertion by the rest pipe connections
Cavity；The implantation is strengthened connector and is laterally disposed in the cavity, and through the location hole on the foundation pile；The filler
It is filled in the cavity.
Preferably, connection window is offered vertically on corresponding tube wall between two adjacent described trustships；Two
Described trustship is respectively equipped between the bottom and upper segment of the two relative connection windows between adjacent described trustship to connect
Fitting is connected.
Preferably, described trustship is steel pipe, and the rest pipe connections are junction steel plate, and the implantation is strengthened
Connector is implantation reinforcing bar.
Preferably, filler is cast-in-place concrete.
Preferably, the rest pipe connections with described trustship the length phase in the axial direction of described trustship
Deng.
Preferably, the axial length of described trustship is 5～6 times of the diameter of the foundation pile.
Preferably, described trustship be arranged in parallel and in same level.
Preferably, respectively horizontal parallel is provided with described in many a trustship, the implantation for the both sides of the foundation pile
Strengthen connector to extend transversely into each described trustship.
Preferably, it is provided with consolidated subsoil with grouting mode between the horizontal tube curtain lower section and underground structure.
The present invention also aims to, there is provided a kind of underground foundation pile pipe curtain supporting construction construction method, can be to underground foundation pile
Realize supporting with load transfer and not limiting the span of newly-built underground structure below.
For achieving the above object, the underground foundation pile pipe curtain supporting construction construction method designed by the present invention, including following step
Suddenly：A () distinguishes the steel pipe of jacking level in the both sides of foundation pile predetermined position；B () opens up slip casting on the inwall of the steel pipe
Hole, from the steel pipe from the injected hole to stratum slip casting, the steel pipe is fixed in the earth formation；C () is from the steel pipe
Slot vertically on the adjacent steel pipe tube wall, form corresponding connection window；D () is by between the two adjacent steel pipes
Soil removing；E () is adjacent by the top of the connection window between the two adjacent steel pipes and two respectively with junction steel plate
The steel pipe between the connection window following transverse weld connection；F () opens determining of extending transversely through on the foundation pile
Position hole, by implantation reinforcing bar the location hole is passed through, and is placed in the steel pipe of the foundation pile both sides；G () is in the foundation pile both sides
The steel pipe and the junction steel plate between formed cavity in injection cast-in-place concrete, formation be arranged on around the foundation pile
Horizontal tube curtain, the steel pipe, the junction steel plate, the implantation reinforcing bar and the existing foundation pile are linked into an integrated entity；H () cuts
Cut part of the foundation pile below the horizontal tube curtain；Build newly-built in the stratum of (i) at the cut foundation pile
Underground structure.
Preferably, it is further comprising the steps of after (i) step：(j) the horizontal tube curtain with it is described
Slip casting between newly-built underground structure forms consolidated subsoil.
Preferably, in the step (a), vertical shaft is constructed near the foundation pile or using the newly-built underground
The vertical shaft of structure, steel pipe described in jacking.
The invention has the beneficial effects as follows：The underground foundation pile pipe curtain supporting construction and construction method of the present invention is by foundation pile week
Enclose a setting trustship, rest pipe connections, connector is strengthened in implantation and filler forms horizontal tube curtain, realize foundation pile support and
Load transfer, this mode security risk is little, while also unrestricted to the span of newly-built underground structure when underpining for foundation pile, tool
There is significant advantage.
Description of the drawings
Fig. 1 is the structural representation of existing pile foundation underpinning structure.
Fig. 2 is the structural representation of the underground foundation pile pipe curtain supporting construction of the first preferred embodiment of the present invention.
Fig. 3 is the mplifying structure schematic diagram in Fig. 2 at I.
Fig. 4 is the amplification sectional view in the A-A directions along Fig. 2.
Fig. 5 is the structural representation of the underground foundation pile pipe curtain supporting construction of second preferred embodiment of the present invention.
Each part numbers are as follows in figure：Existing foundation pile 1, newly build foundation pile 2, transform beams 3, (wherein, the steel pipe of horizontal tube curtain 4
4.1st, junction steel plate 4.2, implantation reinforcing bar 4.3, cast-in-place concrete 4.4), consolidated subsoil 5, newly-built underground structure 6.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail with specific embodiment.
According to above-mentioned the deficiencies in the prior art, the underground foundation pile pipe curtain supporting construction of the present invention adopts pipe curtain mode to building
The underground pile foundation of thing is supported or existing foundation pile is underpined.Refer to Fig. 2, the underground foundation pile pipe of first preferred embodiment of the invention
Curtain supporting construction includes being arranged on the horizontal tube curtain 4 around existing foundation pile 1 and connecting horizontal tube curtain 4 with newly-built underground structure 6
The consolidated subsoil 5 for connecing.
Fig. 3 and Fig. 4 is please referred to, horizontal tube curtain 4 includes steel pipe 4.1, junction steel plate 4.2, is implanted into reinforcing bar 4.3 and cast-in-place
Concrete 4.4.Steel pipe 4.1 is horizontally set on the both sides of existing foundation pile 1, and the steel pipe 4.1 of both sides is towards on the tube wall of existing foundation pile 1
Accordingly it is provided with connection window.Two pieces of junction steel plates 4.2 are respectively from being vertically connected with both sides steel pipe 4.1, one of junction steel plate
The top edge of the connection window of the existing both sides steel pipe 4.1 of foundation pile 1 of 4.2 connections, another piece of junction steel plate 4.2 connects existing foundation pile 1
The lower limb of the connection window of both sides steel pipe 4.1.Junction steel plate 4.2 is welded to connect with steel pipe 4.1.Implantation reinforcing bar 4.3 was through both
Have foundation pile 1 and pass through steel pipe 4.1 tube wall on connection window stretch into the steel pipe 4.1 of both sides.The steel pipe 4.1 of both sides and two pieces
Cast-in-place concrete 4.4 is perfused between in the cavity that junction steel plate 4.2 is formed, so as to horizontal tube curtain 4 be formed with existing foundation pile 1
It is integrated, completes load transfer foundation pile and underpin, the existing foundation pile 1 of the lower section of horizontal tube curtain 4 can be clipped.
For further reinforcement structure, consolidated subsoil 5 is had with grouting mode between horizontal tube curtain 4 and newly-built underground structure 6,
By on the load conversion of horizontal tube curtain 4 to newly-built underground structure 6.
It is noted that the axial length of steel pipe 4.1 should be greater than the diameter of existing foundation pile 1, preferably existing foundation pile 1 it is straight
5～6 times of footpath.Junction steel plate 4.2 and the equal length in the axial direction of steel pipe 4.1 of steel pipe 4.1.
Fig. 5 is referred to, the underground foundation pile pipe curtain supporting construction of second preferred embodiment of the invention includes being arranged on existing base
Horizontal tube curtain 4 around stake 1.
Horizontal tube curtain 4 includes steel pipe 4.1, junction steel plate 4.2, implantation reinforcing bar 4.3 and cast-in-place concrete 4.4.Horizontal tube curtain 4
In the steel pipe 4.1 for being respectively provided on two sides with two levels of existing foundation pile 1, between adjacent steel pipe 4.1 in the horizontal direction just to
Offer connection window on tube wall, two pieces of junction steel plates 4.2 are respectively from being vertically connected with two adjacent steel pipes 4.1.One of company
Connect steel plate 4.2 connect two adjacent steel pipes 4.1 just to connection window top edge, another piece of junction steel plate 4.2 connect two-phase
Adjacent steel pipe 4.1 just to connection window lower limb.Implantation reinforcing bar 4.3 passes through existing foundation pile 1 and the tube wall for passing through steel pipe 4.1
On connection window stretch into the steel pipe 4.1 of both sides.In the cavity that the steel pipe 4.1 of both sides and two pieces of junction steel plates 4.2 are formed it
Between be perfused with cast-in-place concrete 4.4, so as to horizontal tube curtain 4 be formed as one with existing foundation pile 1, complete load transfer foundation pile support
Change, the existing foundation pile 1 of the lower section of horizontal tube curtain 4 can be clipped.
In the present embodiment, also can arrange below horizontal tube curtain 4 and identical consolidated subsoil 5 in first embodiment.
By the description to first embodiment and second embodiment, the underground foundation pile pipe curtain supporting construction of the present invention
In, the quantity of the steel pipe 4.1 of the both sides of existing foundation pile 1 determines according to the load of existing foundation pile 1 in horizontal tube curtain 4, also can set per side
Put many parallel steel pipes 4.1.
It is pointed out that the underground foundation pile pipe curtain supporting construction of the present invention is except for the existing foundation pile 1 in underground of building
Outside underpining, the ground prop of newly-built foundation pile is also can be directly used for.
Below so that the existing foundation pile in the underground to building is underpined as an example, the underground foundation pile pipe curtain supporting construction of the present invention is applied
Work method is described in detail, and it is comprised the following steps：
A () first, near the existing foundation pile 1 for intending being underpined vertical shaft is constructed, or using existing newly-built underground structure 6
Vertical shaft, in the both sides of the predetermined position of existing foundation pile 1 for intending underpining the steel pipe 4.1 of jacking level is distinguished.Existing foundation pile 1 it is each
The quantity of side steel pipe 4.1 can be one or many be arranged in parallel, and be determined according to the load of existing foundation pile 1.
B () opens up injected hole on the inwall of steel pipe 4.1, from steel pipe 4.1 from injected hole to stratum slip casting, by steel pipe
4.1 fix in the earth formation.The diameter of steel pipe 4.1 need to meet and be available for workmen to enter, and such as diameter of steel pipe 4.1 can be 1.8
～2 meters.
C () is slotted vertically from steel pipe 4.1 on the adjacent tube wall of steel pipe 4.1, form corresponding connection window.
D () removes in the soil between two adjacent steel pipes 4.1, in order to the construction of next step.
(e) with junction steel plate 4.2 respectively by steel plate by between two adjacent steel pipes 4.1 connection window top and two-phase
The following transverse weld connection of the connection window between adjacent steel pipe 4.1.
F () opens the location hole for extending transversely through on existing foundation pile 1, implantation reinforcing bar 4.3 is passed through into location hole, is placed in existing base
In the steel pipe 4.1 of 1 both sides of stake.Because being limited by underground construction operating space, implantation reinforcing bar 4.3 is welded using multistage bar dowel
It is formed by connecting, can welds in implantation in work progress.
Cast-in-place coagulation is injected in g cavity that () is formed between the steel pipe 4.1 and junction steel plate 4.2 of the both sides of existing foundation pile 1
Soil 4.4, formation is arranged on the horizontal tube curtain 4 around existing foundation pile 1.Horizontal tube curtain 4 by steel pipe 4.1, junction steel plate 4.2, implantation
Reinforcing bar 4.3 links into an integrated entity with existing foundation pile 1.
H () horizontal tube curtain 4 is constructed after the completion of, that is, the load transfer to existing foundation pile 1 is formed, now cleavable existing foundation pile
1 is located at part of the horizontal tube curtain below 4, completes foundation pile and underpins.
In the stratum of (i) at cut existing foundation pile 1, newly-built underground structure 6 can be built, newly-built underground structure 6 can
Newly-built subterranean tunnel and its supporting construction etc..
J () is last, depending on the situation of newly-built underground structure 6, decide whether between horizontal tube curtain 4 and newly-built underground structure 6
Slip casting forms consolidated subsoil 5, by load conversion to newly-built underground structure 6.
The underground foundation pile pipe curtain supporting construction and construction method of the present invention around foundation pile by arranging horizontal tube curtain, in water
Flat pipe curtain lower section arranges support and load transfer of the consolidated subsoil realization to foundation pile, and this mode security risk is little, while being used for
It is also unrestricted to the span of newly-built underground structure when foundation pile is underpined, with significant advantage.
Embodiment described above only expresses the several embodiments of the present invention, and its description is more concrete and detailed, but and
Therefore the restriction to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art
For, without departing from the inventive concept of the premise, some deformations and improvement can also be made, these belong to the guarantor of the present invention
Shield scope.Therefore, the protection domain of patent of the present invention should be defined by claims.
Claims (12)
1. a kind of underground foundation pile pipe curtain supporting construction, it is characterised in that：Including foundation pile (1) and it is arranged on around the foundation pile (1)
Horizontal tube curtain (4), the horizontal tube curtain (4) includes that connector is strengthened in trustship (4.1), rest pipe connections (4.2), implantation
And filler (4.4) (4.3)；Described trustship (4.1) is horizontally set on the foundation pile (1) both sides, and by described trustship
Connector (4.2) connects to form an insertion cavity；The implantation is strengthened connector (4.3) and is laterally disposed in the cavity,
And through the location hole on the foundation pile (1)；The filler (4.4) is filled in the cavity.
2. underground foundation pile pipe curtain supporting construction according to claim 1, it is characterised in that：Two adjacent described trustships
(4.1) connection window is offered between on corresponding tube wall vertically；Between two adjacent described trustships (4.1) two are relative
The rest pipe connections (4.2) are respectively equipped between the bottom and upper segment of the connection window to be connected.
3. underground foundation pile pipe curtain supporting construction according to claim 1, it is characterised in that：Described trustship (4.1) is steel
Pipe, the rest pipe connections (4.2) are junction steel plate, and the implantation strengthens connector (4.3) to be implanted into reinforcing bar.
4. underground foundation pile pipe curtain supporting construction according to claim 1, it is characterised in that：Filler (4.4) is cast-in-place mixed
Solidifying soil.
5. underground foundation pile pipe curtain supporting construction according to claim 1, it is characterised in that：The rest pipe connections
(4.2) with described trustship (4.1) in the axial direction of described trustship (4.1) equal length.
6. underground foundation pile pipe curtain supporting construction according to claim 5, it is characterised in that：The axle of described trustship (4.1)
To 5～6 times of the diameter that length is the foundation pile (1).
7. underground foundation pile pipe curtain supporting construction according to claim 1, it is characterised in that：Described trustship (4.1) is parallel
Arrange and in same level.
8. underground foundation pile pipe curtain supporting construction according to claim 1, it is characterised in that：The both sides of the foundation pile (1) point
Other horizontal parallel is provided with a trustship (4.1) described in many, and the implantation strengthens connector (4.3) and extends transversely into each described
In trustship (4.1).
9. underground foundation pile pipe curtain supporting construction according to any one of claim 1 to 8, it is characterised in that：The level
Consolidated subsoil (5) is provided between pipe curtain (4) lower section and underground structure (6) with grouting mode.
10. a kind of underground foundation pile pipe curtain supporting construction construction method, comprises the following steps：
A () distinguishes the steel pipe (4.1) of jacking level in the both sides of foundation pile (1) predetermined position；
B () opens up injected hole on the inwall of the steel pipe (4.1), from the steel pipe (4.1) from the injected hole to stratum
Slip casting, the steel pipe (4.1) is fixed in the earth formation；
C () is slotted vertically from the inherent adjacent steel pipe (4.1) tube wall of the steel pipe (4.1), form corresponding connection
Window；
D () removes in the soil between the two adjacent steel pipes (4.1)；
E () is with junction steel plate (4.2) respectively by the top and two of the connection window between the two adjacent steel pipes (4.1)
The following transverse weld connection of the connection window between the adjacent steel pipe (4.1)；
F () opens the location hole for extending transversely through on the foundation pile (1), by implantation reinforcing bar (4.3) through the location hole, be placed in institute
State in the steel pipe (4.1) of foundation pile (1) both sides；
Note in g cavity that () is formed between the steel pipe (4.1) and the junction steel plate (4.2) of the foundation pile (1) both sides
Enter cast-in-place concrete (4.4), formation is arranged on the horizontal tube curtain (4) around the foundation pile (1), by the steel pipe (4.1), described
Junction steel plate (4.2), implantation reinforcing bar (4.3) link into an integrated entity with the existing foundation pile (1)；
H () cuts part of the foundation pile (1) positioned at the horizontal tube curtain (4) below；
I () builds newly-built underground structure (6) in the stratum at the cut foundation pile (1) place.
11. underground foundation pile pipe curtain supporting construction construction methods according to claim 10, it is characterised in that at (i)
It is further comprising the steps of after step：
J () slip casting between the horizontal tube curtain (4) and the newly-built underground structure (6) forms consolidated subsoil (5).
12. underground foundation pile pipe curtain supporting construction construction methods according to claim 10, it is characterised in that：In the step
In (a), vertical shaft or the vertical shaft using the newly-built underground structure (6), steel pipe described in jacking are constructed near the foundation pile (1)
(4.1)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710019635.XA CN106638732B (en) | 2017-01-11 | 2017-01-11 | Underground foundation pile pipe curtain support construction and construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710019635.XA CN106638732B (en) | 2017-01-11 | 2017-01-11 | Underground foundation pile pipe curtain support construction and construction method |
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| Publication Number | Publication Date |
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| CN106638732A true CN106638732A (en) | 2017-05-10 |
| CN106638732B CN106638732B (en) | 2019-01-01 |
Family
ID=58844051
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| JPH1025734A (en) * | 1996-07-11 | 1998-01-27 | Okumura Corp | Bearing-pile reinforcing structure of existing structure and reinforcing method thereof |
| CN1641114A (en) * | 2004-01-17 | 2005-07-20 | 上海市城市建设设计研究院 | Method for constructing deep-large foundation pit over operating tunnel an ddeformation-preventing strucutre |
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| CN106638732B (en) | 2019-01-01 |
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