CN107542098A - A kind of ultra-deep foundation pit supporting construction and its construction method - Google Patents
A kind of ultra-deep foundation pit supporting construction and its construction method Download PDFInfo
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- CN107542098A CN107542098A CN201710951447.0A CN201710951447A CN107542098A CN 107542098 A CN107542098 A CN 107542098A CN 201710951447 A CN201710951447 A CN 201710951447A CN 107542098 A CN107542098 A CN 107542098A
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- enclosing
- shaped steel
- soil nailing
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- foundation pit
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Abstract
The present invention relates to a kind of ultra-deep foundation pit supporting construction and its construction method, including the first enclosing, the second enclosing, connecting portion to form；First enclosing includes the first concrete walls, the first shaped steel, and some first shaped steel are uniformly inserted in first concrete walls and consolidated and are integrated, and first concrete walls are exposed on the first shaped steel top；Second enclosing includes the second concrete walls, the second shaped steel, and some second shaped steel are uniformly inserted in second concrete walls and consolidated and are integrated, and second concrete walls are exposed on the second shaped steel top；The connecting portion is used to connect the first enclosing and the second enclosing, including connector, articulamentum and connection soil nailing.Each component in the structure is connected as an entirety, effectively solves the problems, such as to incline and collapses, especially suitable for the supporting of ultra-deep foundation pit, excavation area excavates compared to slope to be greatly reduced, and the backfill earthwork also greatly reduces.
Description
Technical field
The present invention relates to Super Deep Foundation Pit Construction field, especially a kind of ultra-deep foundation pit supporting construction and its construction method.
Background technology
When base pit engineering refers to the construction of building under ground portion, excavation pit needed, carry out precipitation and to crater wall enclosing, simultaneously
Buildings or structures around, road and underground utilities are detected and safeguarded, it is ensured that normal, the safe construction of whole process.
With urban economy and build fast development, it is possible to provide space also become more and more small, generally require narrow
The excavation of deep basal pit is carried out on place, slope space is not present in surrounding, and cutting depth is constantly deepened, it is necessary to takes supporting to arrange
Apply the safe construction that just can guarantee that foundation ditch.
With the development in epoch and the raising of living standards of the people, the importance and safe class more and more higher of building.
The development that major Urban Underground Space Excavation utilizes, the surrounding enviroment of skyscraper require that high, deep basal pit area is big and engineering ring
Factor changeable situation engineering in border is more and more.How rationally to meet that surrounding enviroment protection requires, ensureing base pit engineering safety
Under the premise of, reduce foundation ditch temporary support structures quantities, have become the main research direction of China's the design of deep foundation project it
One.
The content of the invention
In order to solve problems of the prior art, the invention provides a kind of ultra-deep foundation pit supporting construction and its construction
Method, by using new structure, effectively solve the problems, such as that ultra-deep foundation pit easily inclines and collapse.
It is as follows that the present invention solves the technical scheme that its technical problem uses：The structure includes the first enclosing, the second enclosing, connected
Socket part forms；
First enclosing includes the first concrete walls, the first shaped steel, and some first shaped steel uniformly insert described the
In one concrete walls and consolidation is integrated, and first concrete walls are exposed on the first shaped steel top；
Second enclosing includes the second concrete walls, the second shaped steel, and some second shaped steel uniformly insert described the
In two concrete walls and consolidation is integrated, and second concrete walls are exposed on the second shaped steel top；
The connecting portion is used to connect the first enclosing and the second enclosing, forms an entirety, including connector, company
Connect layer and connection soil nailing, the connector is used to connecting the first shaped steel and the second shaped steel, and the articulamentum is used to connecting described the
One concrete walls and the second concrete walls, the connection soil nailing are used to connect the articulamentum；
The height of first enclosing is higher than the height of the second enclosing.
The present invention solves the further technical scheme of its technical problem：The connection soil nailing includes coagulation outer layer and soil nailing
Core, the concrete outer layer covers form an overall structure on soil nailing core.
The present invention solves the further technical scheme of its technical problem：The soil nailing core is in shaped steel, reinforcing bar or steelframe
One kind.
The present invention solves the further technical scheme of its technical problem：The connection soil nailing layering is set, and institute of staggering
State the first shaped steel on the first enclosing.
The present invention solves the further technical scheme of its technical problem：The articulamentum includes connection net and the company of being wrapped in
Connect online concrete layer.
The present invention solves the further technical scheme of its technical problem：The outer end of the soil nailing core and the connection net phase
Even.
The present invention solves the further technical scheme of its technical problem：The slope angle of the articulamentum is 70 °~90 °, even
The thickness for connecing layer is 10~250mm.
The present invention solves the further technical scheme of its technical problem：The thickness of first enclosing is less than described second
The thickness of enclosing even.
The present invention solves the further technical scheme of its technical problem：The connector includes connection ring and connecting rod,
Two connection rings are hinged on the both ends of the connecting rod, and the connection ring is used to be socketed in first shaped steel or Second-Type
On steel.
A kind of ultra-deep foundation pit support construction method, comprises the following steps：
S1. mechanical model is established according to the projected depth of foundation ditch, the data of soil, determines the first enclosing 1 and the second enclosing 2
Position, the thickness of depth thickness and connecting portion 3, slope angle；
S2. carry out the first enclosing 1 using fountain type drilling mixer to set, inserted before the first concrete walls 11 do not consolidate
Enter to carry the first shaped steel 12 of separating layer；
S3. the excavation of foundation ditch is carried out after the first enclosing 1 of S2 steps reaches the intensity of design requirement, formation meets design will
The slope for asking connecting portion 3 to set；
S4. carry out the second enclosing 2 using fountain type drilling mixer to set, inserted before the second concrete walls 21 do not consolidate
Enter to carry the second shaped steel 22 of separating layer；
S5. the drilling of the mounting hole of soil nailing 33, peace are attached after the second enclosing 2 of S4 steps reaches the intensity of design requirement
It is standard that Kong Yineng, which is filled, through the first enclosing 1, and then according to mounting hole by soil nailing core loading mounting hole, soil nailing core is can pass through
First enclosing 1 is standard；
S6. after the completion of the S5 steps connection soil nailing 33, then the laying of net and the connection with soil nailing core are attached；
S7. pouring in the online progress concrete of connection, forming one will connection soil nailing 33, the first enclosing 1, the second enclosing
2 concrete layers being connected as a single entity；
S8, before concrete layer does not consolidate in the step s 7, the both ends of connector 32 are connected into the first shaped steel 12 and respectively
Two shaped steel 22, and the connector 32 with separating layer is pressed into concrete layer；
S9, after the structure of articulamentum 31 reaches design strength in S8 steps, carrying out the excavation of remaining foundation ditch；
S10. after the completion of ultra-deep foundation pit excavates construction, the dismounting of part 32 is attached first, then carries out the second shaped steel 22
Dismounting, finally carry out the dismounting of the first shaped steel 12 again；
S11. after the completion of step S10, then backfilling of earthwork is carried out, completes the construction of whole foundation ditch.
The present invention achieves following beneficial effect：
By the way that each component in the structure is connected as into an entirety, effectively solves the problems, such as to incline and collapse, especially
Suitable for the supporting of ultra-deep foundation pit, excavation area excavates compared to slope to be greatly reduced, and the backfill earthwork also greatly reduces.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of structural representation of supporting construction of the present invention；
Specific reference is as follows in figure：
1st, the first enclosing；11st, the first concrete walls；12nd, the first shaped steel；2nd, the second enclosing；21st, the second concrete walls；22、
Second shaped steel；3rd, connecting portion；31st, articulamentum；32nd, connector；33rd, soil nailing is connected.
Embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
Part of the embodiment of the present invention, rather than whole embodiments.The present invention implementation being generally described and illustrated herein in the accompanying drawings
The component of example can be configured to arrange and design with a variety of.
Therefore, below the detailed description of the embodiments of the invention to providing in the accompanying drawings be not intended to limit it is claimed
The scope of the present invention, but be merely representative of the present invention selected embodiment.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, belong to the model that the present invention protects
Enclose.
It should be noted that：Similar label and letter represents similar terms in following accompanying drawing, therefore, once a certain Xiang Yi
It is defined, then it further need not be defined and explained in subsequent accompanying drawing in individual accompanying drawing.
In the description of the invention, it is necessary to explanation, term " " center ", " on ", " under ", "left", "right", " vertical ",
The orientation or position relationship of the instruction such as " level ", " interior ", " outer " be based on orientation shown in the drawings or position relationship, or should
Invention product using when the orientation usually put or position relationship, be for only for ease of the description present invention and simplify description, without
It is instruction or implies that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore not
It is understood that as limitation of the present invention.In addition, term " first ", " second ", " the 3rd " etc. are only used for distinguishing description, and can not manage
Solve to indicate or implying relative importance.
In addition, the term such as term " level ", " vertical " is not offered as requiring part abswolute level or pendency, but can be slightly
Low dip.Such as " level " only refers to that its direction is more horizontal with respect to for " vertical ", is not to represent that the structure must be complete
It is complete horizontal, but can be slightly tilted.
In the description of the invention, it is also necessary to explanation, unless otherwise clearly defined and limited, term " setting ",
" installation ", " connected ", " connection " should be interpreted broadly, for example, it may be fixedly connected or be detachably connected, or one
Connect body；Can be mechanical connection or electrical connection；Can be joined directly together, can also be indirect by intermediary
It is connected, can is the connection of two element internals.For the ordinary skill in the art, on being understood with concrete condition
State the concrete meaning of term in the present invention.
A kind of ultra-deep foundation pit supporting construction, referring to shown in accompanying drawing 1, the structure includes the first enclosing 1, the second enclosing 2, connection
Portion 3 forms；
First enclosing 1 includes the first concrete walls 11, the first shaped steel 12, and some first shaped steel 12 uniformly insert
In first concrete walls 11 and consolidation is integrated, and first concrete walls 11 are exposed on the top of the first shaped steel 12；
Second enclosing 2 includes the second concrete walls 21, the second shaped steel 22, and some second shaped steel 22 uniformly insert
In second concrete walls 21 and consolidation is integrated, and second concrete walls 21 are exposed on the top of the second shaped steel 22；
The connecting portion 3 is used to connect the first enclosing 1 and the second enclosing 2, forms an entirety, including connector
32nd, articulamentum 31 and connection soil nailing 33, the connector 32 are used to connect the first shaped steel 12 and the second shaped steel 22, the articulamentum
31 are used to connect the concrete walls 21 of the first concrete walls 11 and second, and the connection soil nailing 33 is used to connect the articulamentum
31；
The height of first enclosing 1 is higher than the height of the second enclosing 2.
By the way that each component in the structure is connected as into an entirety, effectively solves the problems, such as to incline and collapse, especially
Suitable for the supporting of ultra-deep foundation pit, excavation area excavates compared to slope to be greatly reduced, and the backfill earthwork also greatly reduces.
In order to which the enclosing 1 of articulamentum 31 and first is preferably combined, the shearing resistance of connection soil nailing 33 is improved, as preferred side
Case, the connection soil nailing 33 include coagulation outer layer and soil nailing core, the concrete outer layer covers formed on soil nailing core one it is whole
Body structure.Preferably, the soil nailing core is one kind in shaped steel, reinforcing bar or steelframe.
In order to get into the first shaped steel 12 on the first enclosing 1, the connection soil nailing when preventing and connecting the mounting hole of soil nailing 33
33 layerings are set, and the first shaped steel 12 on first enclosing 1 that staggers.The connection soil nailing 33 of different layers can set different
Angle, connection soil nailing 33 just form multiple triangles, the power that the structure of the first enclosing 1 is subject to smoothly are transmitted into the second enclosing 2
On, the second enclosing 2 can support the first enclosing 1, form an extremely stable structure.
In order to more preferably connect the first enclosing 1 and the second enclosing 2, while and can will preferably connect soil nailing 33 and connect
Connect layer 31 to connect, preferably, the articulamentum 31 includes connection net and be wrapped in connect online concrete layer.It is described
The outer end of soil nailing core is connected with the connection net.Preferably, soil nailing core using welding by the way of be connected in connection.
Preferably, the slope angle of the articulamentum 31 is 70 °~90 °, and the thickness of articulamentum 31 is 10~250mm.
Because the power that the first enclosing 1 is subject to is less than the power that the second enclosing 2 is subject to, preferably, described first encloses
The thickness of gear 1 is less than the thickness of second enclosing 2 even.
Because the depth of ultra-deep foundation pit is all higher than 15m, further, in practice of construction, the thickness of first enclosing 1
Spend for 600mm.
For the ease of installing and connector 32 recycles and reuses, the connector 32 includes connection ring and connecting rod,
Two connection rings are hinged on the both ends of the connecting rod, and the connection ring is used to be socketed in first shaped steel 12 or the second
On shaped steel 22.
Construction method using above-mentioned supporting construction is as follows：
S1. mechanical model is established according to the projected depth of foundation ditch, the data of soil, determines the first enclosing 1 and the second enclosing 2
Position, the thickness of depth thickness and connecting portion 3, slope angle；
S2. carry out the first enclosing 1 using fountain type drilling mixer to set, inserted before the first concrete walls 11 do not consolidate
Enter to carry the first shaped steel 12 of separating layer；
S3. the excavation of foundation ditch is carried out after the first enclosing 1 of S2 steps reaches the intensity of design requirement, formation meets design will
The slope for asking connecting portion 3 to set；
S4. carry out the second enclosing 2 using fountain type drilling mixer to set, inserted before the second concrete walls 21 do not consolidate
Enter to carry the second shaped steel 22 of separating layer；
S5. the drilling of the mounting hole of soil nailing 33, peace are attached after the second enclosing 2 of S4 steps reaches the intensity of design requirement
It is standard that Kong Yineng, which is filled, through the first enclosing 1, and then according to mounting hole by soil nailing core loading mounting hole, soil nailing core is can pass through
First enclosing 1 is standard；
S6. after the completion of the S5 steps connection soil nailing 33, then the laying of net and the connection with soil nailing core are attached；
S7. pouring in the online progress concrete of connection, forming one will connection soil nailing 33, the first enclosing 1, the second enclosing
2 concrete layers being connected as a single entity；
S8, before concrete layer does not consolidate in the step s 7, the both ends of connector 32 are connected into the first shaped steel 12 and respectively
Two shaped steel 22, and the connector 32 with separating layer is pressed into concrete layer；
S9, after the structure of articulamentum 31 reaches design strength in S8 steps, carrying out the excavation of remaining foundation ditch；
S10. after the completion of ultra-deep foundation pit excavates construction, the dismounting of part 32 is attached first, then carries out the second shaped steel 22
Dismounting, finally carry out the dismounting of the first shaped steel 12 again；
S11. after the completion of step S10, then backfilling of earthwork is carried out, completes the construction of whole foundation ditch.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those familiar with the art the invention discloses technical scope in, change or replacement can be readily occurred in, should all be contained
Cover within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of ultra-deep foundation pit supporting construction, it is characterised in that including the first enclosing, the second enclosing, connecting portion composition；
First enclosing includes the first concrete walls, the first shaped steel, and it is mixed that some first shaped steel uniformly insert described first
In solidifying cob wall and consolidation is integrated, and first concrete walls are exposed on the first shaped steel top；
Second enclosing includes the second concrete walls, the second shaped steel, and it is mixed that some second shaped steel uniformly insert described second
In solidifying cob wall and consolidation is integrated, and second concrete walls are exposed on the second shaped steel top；
The connecting portion is used to connect the first enclosing and the second enclosing, forms an entirety, including connector, articulamentum
With connection soil nailing, the connector is used to connect the first shaped steel and the second shaped steel, and the articulamentum is mixed for connecting described first
Solidifying cob wall and the second concrete walls, the connection soil nailing are used to connect the articulamentum；
The height of first enclosing is higher than the height of the second enclosing.
2. ultra-deep foundation pit supporting construction according to claim 1, it is characterised in that the connection soil nailing includes coagulation outer layer
With soil nailing core, the concrete outer layer covers form an overall structure on soil nailing core.
3. ultra-deep foundation pit supporting construction according to claim 2, it is characterised in that the soil nailing core be shaped steel, reinforcing bar or
One kind in steelframe.
4. ultra-deep foundation pit supporting construction according to claim 3, it is characterised in that the connection soil nailing layering is set, and
The first shaped steel to stagger on first enclosing.
5. ultra-deep foundation pit supporting construction according to claim 4, it is characterised in that the articulamentum includes connection net and bag
It is rolled in and connects online concrete layer.
6. ultra-deep foundation pit supporting construction according to claim 5, it is characterised in that the outer end of the soil nailing core and the company
Net is connect to be connected.
7. ultra-deep foundation pit supporting construction according to claim 5, it is characterised in that the slope angle of the articulamentum be 70 °~
90 °, the thickness of articulamentum is 10~250mm.
8. ultra-deep foundation pit supporting construction according to claim 1, it is characterised in that the thickness of first enclosing is less than institute
State the thickness of the second enclosing even.
9. ultra-deep foundation pit supporting construction according to claim 1, it is characterised in that the connector includes connection ring and company
Extension bar, two connection rings are hinged on the both ends of the connecting rod, the connection ring be used to being socketed in first shaped steel or
On second shaped steel.
A kind of 10. ultra-deep foundation pit support construction method, it is characterised in that comprise the following steps：
S1. mechanical model is established according to the projected depth of foundation ditch, the data of soil, determines the position of the first enclosing 1 and the second enclosing 2
Put, thickness, the slope angle of depth thickness and connecting portion 3；
S2. carry out the first enclosing 1 using fountain type drilling mixer to set, the insert band before the first concrete walls 11 do not consolidate
There is the first shaped steel 12 of separating layer；
S3. the excavation of foundation ditch is carried out after the first enclosing 1 of S2 steps reaches the intensity of design requirement, formation meets design requirement company
The slope that socket part 3 is set；
S4. carry out the second enclosing 2 using fountain type drilling mixer to set, the insert band before the second concrete walls 21 do not consolidate
There is the second shaped steel 22 of separating layer；
S5. the drilling of the mounting hole of soil nailing 33, mounting hole are attached after the second enclosing 2 of S4 steps reaches the intensity of design requirement
That can be standard through the first enclosing 1, then soil nailing core be loaded in mounting hole according to mounting hole, soil nailing core is with can be through first
Enclosing 1 is standard；
S6. after the completion of the S5 steps connection soil nailing 33, then the laying of net and the connection with soil nailing core are attached；
S7. pouring in the online progress concrete of connection, form one and connect connection soil nailing 33, the first enclosing 1, the second enclosing 2
The concrete layer being integrated；
S8, before concrete layer does not consolidate in the step s 7, the both ends of connector 32 are connected into the first shaped steel 12 and Second-Type respectively
Steel 22, and the connector 32 with separating layer is pressed into concrete layer；
S9, after the structure of articulamentum 31 reaches design strength in S8 steps, carrying out the excavation of remaining foundation ditch；
S10. after the completion of ultra-deep foundation pit excavates construction, the dismounting of part 32 is attached first, then carries out tearing open for the second shaped steel 22
Remove, finally carry out the dismounting of the first shaped steel 12 again；
S11. after the completion of step S10, then backfilling of earthwork is carried out, completes the construction of whole foundation ditch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951447.0A CN107542098B (en) | 2017-10-12 | 2017-10-12 | Ultra-deep foundation pit supporting structure and construction method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710951447.0A CN107542098B (en) | 2017-10-12 | 2017-10-12 | Ultra-deep foundation pit supporting structure and construction method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN107542098A true CN107542098A (en) | 2018-01-05 |
| CN107542098B CN107542098B (en) | 2023-07-25 |
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ID=60967908
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710951447.0A Active CN107542098B (en) | 2017-10-12 | 2017-10-12 | Ultra-deep foundation pit supporting structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108951651A (en) * | 2018-08-08 | 2018-12-07 | 东莞坂盈实业有限责任公司 | A kind of pattern foundation pit supporting structure that stablizing effect is good |
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| KR100818504B1 (en) * | 2006-12-27 | 2008-03-31 | (주) 공인건설 | Tension soil nail and construction method of precast concrete panel using the same |
| CN204418187U (en) * | 2014-12-31 | 2015-06-24 | 广东省重工建筑设计院有限公司 | Subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction |
| CN205421276U (en) * | 2016-02-03 | 2016-08-03 | 华侨大学 | Strut heterotypic double row pile of foundation ditch lateral wall |
| CN207362855U (en) * | 2017-10-12 | 2018-05-15 | 中国建筑第二工程局有限公司 | A kind of ultra-deep foundation pit supporting construction |
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2017
- 2017-10-12 CN CN201710951447.0A patent/CN107542098B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100818504B1 (en) * | 2006-12-27 | 2008-03-31 | (주) 공인건설 | Tension soil nail and construction method of precast concrete panel using the same |
| CN204418187U (en) * | 2014-12-31 | 2015-06-24 | 广东省重工建筑设计院有限公司 | Subway protection region soil nail wall is in conjunction with double-row pile deep foundation ditch composite supporting construction |
| CN205421276U (en) * | 2016-02-03 | 2016-08-03 | 华侨大学 | Strut heterotypic double row pile of foundation ditch lateral wall |
| CN207362855U (en) * | 2017-10-12 | 2018-05-15 | 中国建筑第二工程局有限公司 | A kind of ultra-deep foundation pit supporting construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108951651A (en) * | 2018-08-08 | 2018-12-07 | 东莞坂盈实业有限责任公司 | A kind of pattern foundation pit supporting structure that stablizing effect is good |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107542098B (en) | 2023-07-25 |
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