CN208907225U - A kind of double-row pile foundation pit enclosure structure of arch arrangement - Google Patents
A kind of double-row pile foundation pit enclosure structure of arch arrangement Download PDFInfo
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- CN208907225U CN208907225U CN201821200404.5U CN201821200404U CN208907225U CN 208907225 U CN208907225 U CN 208907225U CN 201821200404 U CN201821200404 U CN 201821200404U CN 208907225 U CN208907225 U CN 208907225U
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- foundation pit
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- campshed
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Abstract
The utility model is a kind of double-row pile foundation pit enclosure structure of arch arrangement, is related to a kind of mixing pile combination double-row pile, foundation pit enclosure structure system suitable for soft clay area.The foundation pit system includes double-row pile building enclosure, mixing pile, capping beam, coupling beam (for large span foundation pit, can also be equipped with internal support of foundation pit).Capping beam is along the inside and outside campshed that parallel margin of foundation pit direction is arranged in double-row pile, and coupling beam is for connecting inside and outside campshed.The characteristic of the utility model is that mixing pile and double-row pile are all made of arch arrangement, arch bottom is connected with hole inner support, give full play to the strong feature of domes compression capability, promote the rigidity and safety of foundation pit enclosure structure, realize foundation pit without inner support or large span without inner support, supported amount inside foundation pit is reduced, cost is reduced, shortens the construction period.
Description
Technical field
The utility model belongs to geotechnical engineering foundation pit enclosure technical field, is related to a kind of double-row pile foundation pit support structure.
Background technique
In Soft Deep Foundation Pit engineering, the stability for how guaranteeing foundation pit, is reduced to week the deformation for controlling pattern foundation pit supporting structure
The influence in collarette border increasingly causes the attention of design, construction and geotechnical engineering scientific research personnel.Double-row pile building enclosure is
A kind of more novel building enclosure form, due to its front and back, the reasonable stress of campshed is shared, and there is stronger deformation to resist energy
Power has had certain research and application in soft clay area at present.For the foundation pit of smaller size, traditional double-row pile maintenance
The cost heavy force height of dam of system.For large scale foundation pit, the non-deformability of traditional double-row pile retaining design is compared to campshed
It is weak in conjunction with horizontal struts system.Also there is part engineering to use the form of construction work of double-row pile combination horizontal struts system at present.It is such
Mode is not only at high cost, and the unearthed space in foundation pit, which is also horizontally supported, to be tied up, and seriously affects construction efficiency.
Utility model content
In view of the deficiencies of the prior art, the purpose of the utility model is to provide a kind of double-row pile pattern foundation pit supporting structures of arch form
Structure can improve the non-deformability of traditional Double-row Piles Support form under same cost and improve the unearthed efficiency of foundation pit.
The foundation pit supporting construction of the utility model includes two parts: lattice Gravity Wall 7 and double-row pile.Lattice Gravity Wall
7 are made of multiple 3 reinforcing bodies of mixing pile, and multiple mixing pile 3 is arranged to form the lattice Gravity Wall 7 of arch using dome grating
It is whole.Cement mixing method body carries out reinforcing formation to the original state soil body by twin shaft or three axes agitating pile machine, as double-row pile and weak soil
Between power transmission medium.Double-row pile drills in the lattice Gravity Wall 7 of formation and pile.Wherein, double-row pile is divided into close to base
The rear campshed 2 inside preceding campshed 1 and separate foundation pit inside hole, the spacing and pilespacing of front and back campshed can be according to engineering practices
Adjustment.Coupled between preceding campshed by capping beam 4, coupled between rear campshed by another road capping beam 4, passes through coupling beam between the campshed of front and back
5 connections, entire double-row pile form the entirety being coupled to each other.Preceding campshed 1, rear campshed 2 and capping beam 4 thereon are respectively formed
Domes.
When foundation pit is larger, inner support 6 can be set at domes both ends, such as reinforced concrete support or steel branch
Support, is quickly scattered and conducted to the periphery soil body for the axle power of domes.
Specifically, the lattice Gravity Wall 7 is arranged in parallel using arch；The preceding campshed 1 and rear campshed 2 are using arch
Shape parallel arrangement, and the shape of arch ring matches with 7 shape of lattice Gravity Wall, makes to enhance whole knot with global consistency
The stabilization of structure.
Specifically, the lattice Gravity Wall 7 includes but is not limited to be stirred by two axis mixing piles, three axes agitating pile, five axis
Stake, six axis mixing piles or rotary churning pile is mixed to constitute.
Specifically, cast-in-situ bored pile, square pile, tubular pole or prestressed pile etc. can be used in the double-row pile.
Specifically, the axle power that double-row pile domes are transmitted directly is born in support inside foundation pit.
Specifically, the ground that the utility model is mentioned also can be used for the ground after slope.
Specifically, inner support is not provided within the scope of the arch of arch double-row pile.
Specifically, inside foundation pit can before abutting campshed the position reserved part soil body to guarantee the requirement of excavation deformation.
Specifically, the connection place of arch double-row pile and common double-row pile or Single row pillars carries out the soil body using intensive mixing pile
It reinforces.
The practical beneficial effect of the utility model is:
By carrying out arch arrangement and both ends support to double-row pile, double-row pile can be effectively improved under the conditions of same cost
Bending stiffness, can reduce construction cost under same bending resistance requirement, more effectively control fender body deformation.The utility model due to
Be utilized arch ring self-supporting effect, the supported amount inside foundation pit can be effectively reduced, for foundation pit be unearthed and building it is fast
Speed construction provides convenience.Domes can more effectively control foundation pit deformation, expand this reality in conjunction with a small amount of inner support simultaneously
With novel application range.
Detailed description of the invention
Fig. 1 be the utility model proposes arch double-row pile pattern foundation pit supporting structure overlooking structure diagram.
Fig. 2 be the utility model proposes arch double-row pile pattern foundation pit supporting structure lateral structure cross-sectional view.
Appended drawing reference in figure are as follows:
Preceding campshed 1, rear campshed 2, mixing pile 3, capping beam 4, coupling beam 5, inner support 6, lattice Gravity Wall 7, ground A, base
Cheat bottom surface B.
Specific embodiment
Further illustrate the practical specific embodiment of the utility model with reference to the accompanying drawing.
Double-row pile foundation pit support structure provided by the utility model includes mixing pile 3, double-row pile and internal support of foundation pit 6.
When foundation pit construction, Double shaft stirring stake machine or the domed undisturbed soil being arranged in around foundation pit of three axes agitating pile machine are used
The interior mixing pile 3 for forming arch arrangement, that is, 7 entirety of lattice Gravity Wall is formed by each mixing pile 3.To lattice gravity
It is 2 pore-forming of preceding campshed 1 and rear campshed on lattice Gravity Wall 7 using drilling machine after wall 7 (i.e. each mixing pile 3) forms intensity,
Drilling should be distributed and located in 3 pile body of mixing pile of lattice Gravity Wall 7 using the arch with 7 identical radian measure of Gravity Wall.
It hangs steel reinforcement cage perfusion pile or squeezes into prefabricated pile, the rear campshed for forming preceding campshed 1 and being set side by side with preceding campshed 1
2.Capping beam 4 is poured at the top of preceding campshed 1 and rear campshed 2；Interval pours coupling beam 5 between preceding campshed 1 and rear campshed 2, uses
It is in grid-like connection in making preceding campshed 1 and rear campshed 2, is collectively formed by preceding campshed 1, rear campshed 2, capping beam 4 and coupling beam 5 double
Stake is whole.
If foundation pit size is larger, bracing members or concrete support can be used when excavation of foundation pit to the depth for performing support
It is supported as both ends of the inner support to arch ring.Foundation pit side is transferred to by truss structure or directly by the axle power of domes
On the soil body of edge.
Specifically, same arch ring locating for the axis that preceding campshed 1 and the mixing pile 3 inside foundation pit are arranged, rear 2 He of campshed
Same arch ring locating for axis far from the mixing pile arrangement inside foundation pit.
Specifically, inner support is not provided within the scope of the arch of arch double-row pile.
Specifically, the connection place of arch double-row pile and common double-row pile or Single row pillars can be used intensive mixing pile and carry out soil
Body is reinforced.
Construction of the double-row pile foundation pit enclosure structure system of arch arrangement applied to underground structure foundation pit enclosure, including with
Lower step:
S1: arch lattice weight is formed in the undisturbed soil around foundation pit using Double shaft stirring stake machine or three axes agitating pile machine
Power wall 7.Mixing pile is also arranged using the arch with front and back campshed identical radian measure.
S2: being 2 pore-forming of preceding campshed 1 and rear campshed using drilling machine after stake to be mixed forms intensity, domed distribution is answered in drilling
And it is located in mixing pile pile body.It hangs steel reinforcement cage perfusion pile or squeezes into prefabricated pile.It forms preceding campshed 1 and is set side by side with preceding campshed
The rear campshed 2 set.
S7: the coupling beam 5 connected between preceding campshed 1 and the capping beam 4 and preceding campshed 1 and rear campshed 2 of rear campshed 2 is poured.It is formed
Double-row pile is whole.
S4: if foundation pit size is larger, bracing members or concrete branch can be used when excavation of foundation pit to the depth for performing support
Support is supported the both ends of arch ring.
Above disclosure is merely preferred embodiments of the utility model, cannot with this come limit the utility model it
Interest field, therefore according to equivalent variations made by application scope of the utility model, it still falls within the scope of the utility model.
Claims (6)
1. a kind of double-row pile foundation pit enclosure structure of arch arrangement, it is characterised in that: including lattice Gravity Wall (7) and double
Stake；
The lattice Gravity Wall (7) includes multiple mixing piles (3), and multiple mixing pile (3) arranges shape using dome grating
Arched lattice Gravity Wall (7) is whole；
The double-row pile is drilling and pile in the lattice Gravity Wall (7) of formation, which includes inside foundation pit
Preceding campshed (1), far from the rear campshed (2) and capping beam (4) and coupling beam (5) inside foundation pit；
The preceding campshed (1) and rear campshed (2) is internal in the lattice Gravity Wall (7) using arch parallel arrangement, setting；
The capping beam (4) is arranged at the top of preceding campshed (1) and rear campshed (2)；
It is connected between the preceding campshed (1) and rear campshed (2) by coupling beam (5)；
Entire double-row pile forms the entirety being coupled to each other.
2. the double-row pile foundation pit enclosure structure of arch arrangement according to claim 1, it is characterised in that: the lattice
Gravity Wall (7) is arranged in parallel using arch；The preceding campshed (1) and rear campshed (2) are arranged in parallel using arch, and arch ring is outer
Shape matches with lattice Gravity Wall (7) shape, makes to enhance integrally-built stabilization with global consistency.
3. the double-row pile foundation pit enclosure structure of arch arrangement according to claim 1, it is characterised in that: further include inner support
(6), the both ends that double-row pile is arranged in the inner support (6) are used to the pressure of the foundation pit enclosure structure being transferred to the periphery soil body.
4. the double-row pile foundation pit enclosure structure of arch arrangement according to claim 1, which is characterized in that the lattice
Gravity Wall (7) includes but is not limited to by two axis mixing piles, three axes agitating pile, five axis mixing piles, six axis mixing piles or rotary churning pile structure
At.
5. the double-row pile foundation pit enclosure structure of arch arrangement according to claim 1, which is characterized in that the preceding campshed
(1) and rear campshed (2) cast-in-situ bored pile, square pile, tubular pole or prestressed pile, are including but not limited to used.
6. the double-row pile foundation pit enclosure structure of arch arrangement according to claim 1, which is characterized in that the preceding campshed
(1) and within the scope of the arch of rear campshed (2) it is not provided with inner support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200404.5U CN208907225U (en) | 2018-07-27 | 2018-07-27 | A kind of double-row pile foundation pit enclosure structure of arch arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821200404.5U CN208907225U (en) | 2018-07-27 | 2018-07-27 | A kind of double-row pile foundation pit enclosure structure of arch arrangement |
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| Publication Number | Publication Date |
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| CN208907225U true CN208907225U (en) | 2019-05-28 |
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ID=66612729
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756315A (en) * | 2021-08-25 | 2021-12-07 | 杭州市市政工程集团有限公司 | Construction method of foundation pit supporting structure spanning important building structures below |
-
2018
- 2018-07-27 CN CN201821200404.5U patent/CN208907225U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113756315A (en) * | 2021-08-25 | 2021-12-07 | 杭州市市政工程集团有限公司 | Construction method of foundation pit supporting structure spanning important building structures below |
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