CN106988331A - A kind of piling strtucture and pile base construction method suitable for soft soil foundation - Google Patents

A kind of piling strtucture and pile base construction method suitable for soft soil foundation Download PDF

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Publication number
CN106988331A
CN106988331A CN201710313391.6A CN201710313391A CN106988331A CN 106988331 A CN106988331 A CN 106988331A CN 201710313391 A CN201710313391 A CN 201710313391A CN 106988331 A CN106988331 A CN 106988331A
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CN
China
Prior art keywords
soft soil
auxiliary tube
piling strtucture
pile
foundation
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Pending
Application number
CN201710313391.6A
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Chinese (zh)
Inventor
范可
黄�俊
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Shanghai Investigation Design and Research Institute Co Ltd SIDRI
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Shanghai Investigation Design and Research Institute Co Ltd SIDRI
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Priority to CN201710313391.6A priority Critical patent/CN106988331A/en
Publication of CN106988331A publication Critical patent/CN106988331A/en
Pending legal-status Critical Current

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    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D27/00Foundations as substructures
    • E02D27/10Deep foundations
    • E02D27/12Pile foundations

Abstract

The present invention provides a kind of piling strtucture suitable for soft soil foundation, the connecting rib and vertically extending auxiliary tube extended including vertically extending main bearing pile, along inward-outward direction, the connecting rib it is inner affixed with main bearing pile, the outer end of the connecting rib and auxiliary tube are affixed.In the present invention suitable for soft soil foundation piling strtucture when in use, using being engaged for its connecting rib and auxiliary tube and Soft Soil Layer, effectively enhance the bearing capacity of the piling strtucture in the present invention suitable for soft soil foundation;And can also by its auxiliary tube into Soft Soil Layer reperfusion reinforcement slurry, so as to strengthen the intensity of Soft Soil Layer at this, and further enhance the bearing capacity of the piling strtucture in the present invention suitable for soft soil foundation.

Description

A kind of piling strtucture and pile base construction method suitable for soft soil foundation
Technical field
The present invention relates to a kind of foundation structure, more particularly to a kind of piling strtucture and pile foundation suitable for soft soil foundation is applied Work method.
Background technology
With continuing to develop for, Offshore Wind Power Generation Technology, the design and construction technology of single-pile foundation is also further ripe, but Still suffer from some problems.There is horizontal displacement is big, and stake is long long, and quantities is larger etc. in the single-pile foundation in deep soft soil Problem, and may occur sliding pile in work progress, slip the phenomenons such as stake.In order to effectively solve the above problems, the invention discloses A kind of piling strtucture and its construction method suitable for soft soil foundation, horizontal bearing capacity and axial carrying for increasing Soft Soil Layer Power, and improve the anti-twisting property of single-pile foundation.
The content of the invention
The shortcoming of prior art in view of the above, is applicable it is an object of the invention to provide a kind of bearing capacity is stronger In the piling strtucture of soft soil foundation.
To achieve the above object, the present invention provides a kind of piling strtucture suitable for soft soil foundation, including along the vertical direction The main bearing pile of extension, the connecting rib and vertically extending auxiliary tube extended along inward-outward direction, the dowel Plate it is inner affixed with main bearing pile, the outer end of the connecting rib and auxiliary tube are affixed.
Further, the side wall of the auxiliary tube is provided with the side grout hole communicated with the endoporus of auxiliary tube.
Further, the auxiliary tube has multiple, and whole auxiliary tubes are circumferentially uniformly distributed along main bearing pile.
Further, the inner length of the connecting rib is more than the length of the outer end of connecting rib.
Further, the trapezoidal structure of the connecting rib.
Further, the main bearing pile is in tubular construction.
Further, the upper end of the main bearing pile is higher than the upper end of auxiliary tube.
As described above, the piling strtucture of the present invention suitable for soft soil foundation, has the advantages that:
The piling strtucture for being applied to soft soil foundation in the present invention when in use, utilizes the dowel on main bearing pile Plate, effectively increases its contact area with Soft Soil Layer, so as to effectively enhance the pile foundation for being applied to soft soil foundation in the present invention The bearing capacity of structure, particularly horizontal bearing capacity and anti-twisting property.Meanwhile, it is applied to the piling strtucture of soft soil foundation in the present invention When in use, its contact area with Soft Soil Layer is not effectively increased merely with its auxiliary tube, is fitted so as to enhance in the present invention Bearing capacity for the piling strtucture of soft soil foundation;And can also by its auxiliary tube into Soft Soil Layer reperfusion reinforcement slurry so that Strengthen the intensity of Soft Soil Layer at this, and further enhance the bearing capacity of the piling strtucture in the present invention suitable for soft soil foundation.
It is another object of the present invention to provide a kind of pile base construction method convenient to carry out.
To achieve the above object, the present invention provides a kind of pile foundation using the piling strtucture suitable for soft soil foundation and applied Work method, comprises the following steps:
S1, the making piling strtucture for being applied to soft soil foundation;
S2, the piling strtucture suitable for soft soil foundation squeezed into Soft Soil Layer;
S3, by auxiliary tube into Soft Soil Layer reperfusion reinforcement slurry.
Further, the piling strtucture suitable for soft soil foundation is being squeezed into setting Soft Soil Layer in the step S2 Positioning is postponed, and the upper end of the auxiliary tube need to be kept to be higher than the surface of Soft Soil Layer.
Further, the reinforcing slurry is cement mortar or concrete slurry.
As described above, pile base construction method of the present invention, has the advantages that:
Pile base construction method in the present invention, employs the above-mentioned piling strtucture suitable for soft soil foundation, and based on its company Connect the bearing capacity that gusset and auxiliary tube effectively enhance the pile foundation that the present invention is built.Meanwhile, the pile base construction method in the present invention, Also by auxiliary tube into Soft Soil Layer reperfusion reinforcement slurry, so as to effectively enhance Soft Soil Layer residing for the pile foundation built of the present invention Intensity, and enhance the interaction at this between Soft Soil Layer and pile foundation so that pile foundation is more firm in Soft Soil Layer, and then causes this The bearing capacity for inventing the pile foundation built is stronger.In addition, pile foundation construction method of the present invention, step is simple, it is convenient to carry out.
Brief description of the drawings
Fig. 1 for the present invention in be applied to soft soil foundation piling strtucture front view.
Fig. 2 for the present invention in be applied to soft soil foundation piling strtucture top view.
Component label instructions
1 main bearing pile
2 connecting ribs
3 auxiliary tubes
Embodiment
Embodiments of the present invention are illustrated by particular specific embodiment below, those skilled in the art can be by this explanation Content disclosed by book understands other advantages and effect of the present invention easily.
It should be clear that structure, ratio, size depicted in this specification accompanying drawing etc., only to coordinate disclosed in specification Content, so that those skilled in the art is understood with reading, is not limited to enforceable qualifications of the invention, therefore do not have Technical essential meaning, the modification of any structure, the change of proportionate relationship or the adjustment of size are not influenceing institute's energy of the present invention Under effect of generation and the purpose that can reach, it all should still fall the scope that can cover in disclosed technology contents It is interior.Meanwhile, cited such as " on ", " under ", "left", "right", " centre " and " one " term, are merely convenient in this specification Narration understands, and is not used to limit enforceable scope of the invention, and being altered or modified for its relativeness is changing skill without essence Held in art, when being also considered as enforceable category of the invention.
In the embodiment of the present invention:As shown in figure 1, the short transverse of main bearing pile 1 is defined as into above-below direction;Such as Fig. 2 institutes Show, the center of main bearing pile 1 to outer rim direction is defined as inward-outward direction.
As depicted in figs. 1 and 2, the present invention provides a kind of piling strtucture suitable for soft soil foundation, including along the vertical direction The main bearing pile 1 of extension, the connecting rib 2 and vertically extending auxiliary tube 3 extended along inward-outward direction, dowel Plate 2 it is inner affixed with main bearing pile 1, the outer end of connecting rib 2 and auxiliary tube 3 are affixed.It is applied to soft soil foundation in the present invention Piling strtucture when in use, using the connecting rib 2 on main bearing pile 1, effectively increase its connecing with Soft Soil Layer Contacting surface is accumulated, so as to effectively enhance the bearing capacity of the piling strtucture in the present invention suitable for soft soil foundation, particularly horizontal bearing Power and anti-twisting property.Meanwhile, the present invention in be applied to soft soil foundation piling strtucture when in use, not merely with its auxiliary tube 3 Its contact area with Soft Soil Layer is effectively increased, so as to enhance holding for the piling strtucture in the present invention suitable for soft soil foundation Carry power;And, so as to strengthen the intensity of Soft Soil Layer at this, can also be gone forward side by side by its reperfusion reinforcement slurry into Soft Soil Layer of auxiliary tube 3 It is applied to the bearing capacity of the piling strtucture of soft soil foundation in the one step enhancing present invention.
Meanwhile, as depicted in figs. 1 and 2, the present invention also provides a kind of using the piling strtucture for being applied to soft soil foundation Pile base construction method, comprise the following steps:
S1, the making piling strtucture for being applied to soft soil foundation;
S2, the piling strtucture suitable for soft soil foundation squeezed into Soft Soil Layer;
S3, by auxiliary tube 3 into Soft Soil Layer reperfusion reinforcement slurry.
Pile base construction method in the present invention, employs the above-mentioned piling strtucture suitable for soft soil foundation, and based on its company Connect gusset 2 and auxiliary tube 3 effectively enhances the bearing capacity for the pile foundation that the present invention is built.Meanwhile, the pile foundation construction side in the present invention Method, also by auxiliary tube 3 into Soft Soil Layer reperfusion reinforcement slurry, so as to effectively enhance weak soil residing for the pile foundation built of the present invention The intensity of layer, and enhance the interaction at this between Soft Soil Layer and pile foundation so that pile foundation is more firm in Soft Soil Layer, and then makes The bearing capacity for obtaining the pile foundation of the invention built is stronger.In addition, pile foundation construction method of the present invention, step is simple, it is convenient to carry out.
Heretofore described bearing capacity includes horizontal bearing capacity, vertical bearing capacity and anti-twisting property.
The side wall of auxiliary tube 3 is provided with the multiple side grout holes communicated with the endoporus of auxiliary tube 3 in the present embodiment, and all Side grout hole is spaced apart along in the short transverse of auxiliary tube 3.In above-mentioned steps S3, the reinforcing slurry in injection auxiliary tube 3 leads to In the Soft Soil Layer for crossing the side-walls that side grout hole flows into auxiliary tube 3, so that effectively strengthen the intensity of Soft Soil Layer at this, and enhancing should Locate the interaction between Soft Soil Layer and auxiliary tube 3 and pile foundation, and then improve the bearing capacity for the pile foundation that the present invention is built.
As depicted in figs. 1 and 2, auxiliary tube 3 has multiple in the present embodiment, and whole auxiliary tubes 3 are circumferential along main bearing pile 1 Even distribution;The quantity of connecting rib 2 is identical with the quantity of auxiliary tube 3, and whole connecting ribs 2 are circumferential uniform along main bearing pile 1 Distribution.Because whole auxiliary tubes 3 are uniformly distributed along main bearing pile 1 is circumferential in the present embodiment, so that in above-mentioned steps S3, respectively After reperfusion reinforcement slurry, it can not only be strengthened around main bearing pile 1 into the main surrounding Soft Soil Layer of bearing pile 1 by whole auxiliary tubes 3 Soft Soil Layer intensity, and can be consistent the Soft Soil Layer intensity around main bearing pile 1, and then ensure the stake that the present invention is built The restriction effect power that Soft Soil Layer suffered by base applies is uniform, it is to avoid pile foundation occurs tilting in use.
The particular number of above-mentioned auxiliary tube 3 and connecting rib 2 can be determined according to the strength conditions of Soft Soil Layer.As shown in Fig. 2 The particular number of connecting rib 2 is 4 in the present embodiment, and the particular number of auxiliary tube 3 is 4.
As shown in figure 1, the inner length of connecting rib 2 is more than the length of the outer end of connecting rib 2.And as shown in figure 1, The structure in a rectangular trapezoid of connecting rib 2 in the present embodiment, to ensure the piling strtucture in the present embodiment suitable for soft soil foundation Bulk strength is higher.
As depicted in figs. 1 and 2, in the present embodiment main bearing pile 1 in tubular construction, and main bearing pile 1 is made up of steel pipe, with It is applied to the processing of the piling strtucture of soft soil foundation in the convenient present invention, that is, facilitates above-mentioned steps S1 implementation.Meanwhile, this reality It is hollow pipe to apply auxiliary tube 3 in example, and also steel pipe is made auxiliary tube 3.And the diameter of auxiliary tube 3 is less than the diameter of main bearing pile 1.
In above-mentioned steps S2 after the piling strtucture suitable for soft soil foundation is squeezed into the setting position Soft Soil Layer, The upper end of the auxiliary tube 3 need to be kept to be higher than the surface of Soft Soil Layer, in order in subsequent step S3 from the upper end of auxiliary tube 3 to auxiliary Help reperfusion reinforcement slurry in the endoporus of pipe 3.
Piling strtucture in the present embodiment suitable for soft soil foundation is mainly used in Oversea wind power generation.Above-mentioned Soft Soil Layer refers to position Soft Soil Layer in seashore or ocean.In the present invention suitable for soft soil foundation piling strtucture when in use, by wind-driven generator Deng installed in the upper end of main bearing pile 1.Meanwhile, as shown in figure 1, the upper end of main bearing pile 1 is higher than auxiliary tube 3 in the present embodiment Upper end, after ensureing to be installed in place suitable for the piling strtucture of soft soil foundation, the upper end of its main bearing pile 1 is higher than the table of Soft Soil Layer Face.
Reinforcing slurry employed in the present embodiment is cement mortar.I.e. in the step S3 of the present embodiment, into auxiliary tube 3 Grout injection.In other embodiments, concrete slurry or other slurries with consolidation effect can be used by reinforcing slurry.
The present embodiment need to first remove the weak soil in auxiliary tube 3, then cement mortar is injected into auxiliary tube 3 in above-mentioned steps S3 In, cement mortar is flowed into Soft Soil Layer by the endoporus and side grout hole of auxiliary tube 3, treats that cement mortar reaches setting hardening index , so as to strengthen the intensity of Soft Soil Layer at this.
As depicted in figs. 1 and 2, the piling strtucture in the present embodiment suitable for soft soil foundation only includes a main bearing pile 1, The piling strtucture for being applied to soft soil foundation is a kind of single-pile foundation structure.
The specific size of connecting rib 2 can be determined according to the thickness of Soft Soil Layer in the present embodiment.It is auxiliary in the present embodiment Help the length and the length of the outer end of connecting rib 2 of pipe 3 basically identical.Meanwhile, the distance of auxiliary tube 3 and main bearing pile 1 should not be too Far, squeezed into facilitate in above-mentioned steps S2, by the piling strtucture suitable for soft soil foundation Soft Soil Layer.
Piling strtucture applicability in the present embodiment suitable for soft soil foundation is good, it is adaptable to overwhelming majority sea weak soil Base, it is easy to construct.The present embodiment pile foundation construction method operability is high.In above-mentioned steps S2, due to Soft Soil Layer quality compared with Setting position that is soft, only need to acting on main bearing pile 1 using corresponding pile driving equipment and make main bearing pile 1 squeeze into Soft Soil Layer, Just connecting rib 2 and auxiliary tube 3 can together be squeezed into the setting position in Soft Soil Layer, it is no longer necessary to which extra pile driving equipment is independent Act on connecting rib 2 and auxiliary tube 3.Meanwhile, together squeezed into connecting rib 2 and auxiliary tube 3 with main bearing pile 1 in Soft Soil Layer Afterwards, connecting rib 2 and auxiliary tube 3 are in contact with Soft Soil Layer, effectively increase this be applied to soft soil foundation piling strtucture with it is soft The contact area of soil layer.In above-mentioned steps S1, the thickness that geological mapping determines Soft Soil Layer need to be first passed through, and as determination institute Connecting rib 2 and auxiliary tube 3 in the size and subsequent step S2 of connecting rib 2 and auxiliary tube 3 is needed to squeeze into the depth of Soft Soil Layer Degree.
In summary, the present invention effectively overcomes various shortcoming of the prior art and has high industrial utilization.
The above-described embodiments merely illustrate the principles and effects of the present invention, not for the limitation present invention.It is any ripe Know the personage of this technology all can carry out modifications and changes under the spirit and scope without prejudice to the present invention to above-described embodiment.Cause This, those of ordinary skill in the art is complete without departing from disclosed spirit and institute under technological thought such as Into all equivalent modifications or change, should by the present invention claim be covered.

Claims (10)

1. a kind of piling strtucture suitable for soft soil foundation, it is characterised in that including vertically extending main bearing pile (1) connecting rib (2) and vertically extending auxiliary tube (3), extended along inward-outward direction, the connecting rib (2) It is inner affixed with main bearing pile (1), the outer end of the connecting rib (2) and auxiliary tube (3) are affixed.
2. it is applied to the piling strtucture of soft soil foundation according to claim 1, it is characterised in that the side of the auxiliary tube (3) Wall is provided with the side grout hole communicated with the endoporus of auxiliary tube (3).
3. it is applied to the piling strtucture of soft soil foundation according to claim 1, it is characterised in that the auxiliary tube (3) has many It is individual, and whole auxiliary tube (3) is circumferentially uniformly distributed along main bearing pile (1).
4. it is applied to the piling strtucture of soft soil foundation according to claim 1, it is characterised in that the connecting rib (2) Inner length is more than the length of the outer end of connecting rib (2).
5. it is applied to the piling strtucture of soft soil foundation according to claim 4, it is characterised in that the connecting rib (2) is in Trapezium structure.
6. it is applied to the piling strtucture of soft soil foundation according to claim 1, it is characterised in that the main bearing pile (1) is in Tubular structure.
7. it is applied to the piling strtucture of soft soil foundation according to claim 1, it is characterised in that the main bearing pile (1) Upper end is higher than the upper end of auxiliary tube (3).
8. a kind of pile base construction method using the piling strtucture for being applied to soft soil foundation as described in any one of claim 1 to 7, It is characterised in that it includes following steps:
S1, the making piling strtucture for being applied to soft soil foundation;
S2, the piling strtucture suitable for soft soil foundation squeezed into Soft Soil Layer;
S3, pass through auxiliary tube (3) the reperfusion reinforcement slurry into Soft Soil Layer.
9. pile base construction method according to claim 8, it is characterised in that described will be applied to weak soil in the step S2 The piling strtucture of ground is squeezed into behind the setting position in Soft Soil Layer, need to keep the upper end of the auxiliary tube (3) higher than Soft Soil Layer Surface.
10. pile base construction method according to claim 8, it is characterised in that the reinforcing slurry is cement mortar or concrete Slurry.
CN201710313391.6A 2017-05-05 2017-05-05 A kind of piling strtucture and pile base construction method suitable for soft soil foundation Pending CN106988331A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710313391.6A CN106988331A (en) 2017-05-05 2017-05-05 A kind of piling strtucture and pile base construction method suitable for soft soil foundation

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Application Number Priority Date Filing Date Title
CN201710313391.6A CN106988331A (en) 2017-05-05 2017-05-05 A kind of piling strtucture and pile base construction method suitable for soft soil foundation

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CN106988331A true CN106988331A (en) 2017-07-28

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835290A (en) * 2014-01-15 2014-06-04 夏军武 Pile foundation structure suitable for marine soft soil and design method thereof
CN105464074A (en) * 2015-11-22 2016-04-06 合肥工业大学 Manual hole digging pile high polymer grouting protection structure and construction method thereof

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103835290A (en) * 2014-01-15 2014-06-04 夏军武 Pile foundation structure suitable for marine soft soil and design method thereof
CN105464074A (en) * 2015-11-22 2016-04-06 合肥工业大学 Manual hole digging pile high polymer grouting protection structure and construction method thereof

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Application publication date: 20170728

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