CN108222024A - A kind of novel foundation pit supporting pile and its construction method - Google Patents
A kind of novel foundation pit supporting pile and its construction method Download PDFInfo
- Publication number
- CN108222024A CN108222024A CN201810215096.1A CN201810215096A CN108222024A CN 108222024 A CN108222024 A CN 108222024A CN 201810215096 A CN201810215096 A CN 201810215096A CN 108222024 A CN108222024 A CN 108222024A
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- China
- Prior art keywords
- steel
- foundation pit
- lattice column
- ontology
- pit supporting
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Classifications
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
Abstract
The present invention provides a kind of novel foundation pit supporting pile and its construction methods, ontology includes concrete, steel lattice column and two steel reinforcement cage compositions, two steel reinforcement cages are connected to the both ends of steel lattice column, steel reinforcement cage includes stirrup and high-strength prestressed concrete rod iron, and the size of steel lattice column part is accurately to be calculated and obtained according to terrace absolute altitude and operation side absolute altitude.Present invention mainly solves under campshed support form, because of foundation pit surrounding enviroment complexity, this law is by increasing oblique fulcrum, strengthening supporting stake bending resistance, control deformation is substantially shorter construction period, cost-effective by this method, this method is calculated by precision determines foundation pit supporting pile construction terrace absolute altitude, part where foundation pit supporting pile steel lattice column is located at and is calculated at absolute altitude, construction in later period is facilitated to handle, and achieve the purpose that safe, time saving, laborsaving, economical, environmentally friendly with rear step bottom plate patching process seamless connection in work progress.
Description
Technical field
The invention belongs to Base hole supporting technology field, more particularly, to a kind of novel foundation pit supporting pile and its construction method.
Background technology
Existing pattern foundation pit supporting structure form (mode) mainly has slope, Gravity Retaining Wall, soil nail wall, campshed, diaphram wall, inverse
Make arch wall etc., being used alone sometimes can also be applied in combination, and because of the difference of geological conditions, used support form is not yet
Together, under campshed support form, because of foundation pit surrounding enviroment complexity, there are important protection object, campshed cantilever (friction pile) in ground, underground
Design can not meet deep pit monitor requirement (demand), and must add the ancillary methods control excavation of foundation pit such as horizontally-supported and construction
Period soil mass of foundation pit displacement, deformation.
Invention content
In view of this, the present invention is directed to propose a kind of novel foundation pit supporting pile and its construction method, mainly solve campshed branch
Under shield form, because of foundation pit surrounding enviroment complexity, there are important protection object in ground, underground, and campshed cantilever (friction pile) design can not
Meet deep pit monitor requirement, and the ancillary methods control excavation of foundation pit such as horizontally-supported and construction period foundation pit earth position must be added
It moves, deformation, this law is by increasing oblique fulcrum, and strengthening supporting stake bending resistance, control deformation is substantially shorter by this method to be applied
In the work period, saving construction cost, this support pile bottom, which adds in high pressure jet grouting stake, increases its bearing capacity, and this method is calculated by precision
Determine that foundation pit supporting pile is constructed terrace absolute altitude, and part where foundation pit supporting pile steel lattice column is located at and is calculated at absolute altitude, after convenient
Phase construction processing.And reach safe, time saving, laborsaving, warp with rear step bottom plate patching process seamless connection in work progress
Ji, the purpose of environmental protection.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of novel foundation pit supporting pile, including：Ontology, the ontology include concrete, steel lattice column and two steel reinforcement cages
Composition, two steel reinforcement cages are connected to the both ends of steel lattice column, and steel reinforcement cage includes stirrup and high-strength prestressed concrete
Rod iron is fixedly connected between stirrup and high-strength prestressed concrete stick, and one end that two steel reinforcement cages are located remotely from each other connects respectively
The outside of first end plate there are one connecing, steel lattice column and two steel reinforcement cages has poured concrete.
Further, the steel lattice column includes angle steel and steel plate.
Further, the steel reinforcement cage is connected with spiral bar close to one end of first end plate, steel reinforcement cage and steel lattice column it
Between be fixedly connected by the second end plate.
Further, multiple prestress anchorage cables are connected on the outside of the ontology, prestress anchorage cable in advance should into " Qian " font
The both ends of power anchor cable are all connected to first end plate.
Further, wherein one end of the ontology is connected with high-pressure rotary jet grouting pile.
Further, cross sectional shape is round, square, rectangle or triangle.
A kind of base pit stand construction, includes the following steps：
Step A, preparative work before construction, pile compacting equipment admission, surveying setting-out.
Step B, piling：Ontology is tilted to calculating absolute altitude by the press-in soil body by pile press machine.
Step C, slip casting prepare：High-pressure rotary-spray equipment connects nozzle, and nozzle is connected to drill bit, make drill bit and nozzle from
The stake holes top of foundation pit supporting pile penetrates, and stretches into the soil body of body lower part.
Step D, rotary jet grouting：High-pressure rotary-spray equipment controls nozzle to carry out rotary jet grouting to the soil body of body lower part.
According to construction demand, the concrete on the outside of steel lattice column is rejected, steel lattice column is made to be exposed to outside by step E, will
The ontology processing recycling on soil body top.
Further, in the step A, the axis of ontology and the angle of vertical direction are 20 °~40 °.
Further, in the step D, high-pressure rotary-spray equipment by pipeline connection in nozzle, and by nozzle from ontology
Stake holes enters, and is then passed through steel lattice column, finally stretches into the soil body of body lower part.
Further, in the step E, nozzle whitewashes to the soil body of 10~20cm of body lower part, forms high pressure rotation
Spray stake.
Relative to the prior art, a kind of novel foundation pit supporting pile of the present invention and its construction method are with following excellent
Gesture：
A kind of novel foundation pit supporting pile of the present invention and its construction method, by increasing oblique fulcrum, strengthening supporting
Stake bending resistance, control deformation are substantially shorter construction period, saving construction cost by this method, this support pile bottom adds in high pressure rotation
Preventing slurry injection stake increases its bearing capacity, and this method is calculated by precision determines novel foundation pit supporting pile construction terrace absolute altitude, will be novel
Part where foundation pit supporting pile steel lattice column, which is located at, to be calculated at absolute altitude, and construction in later period is facilitated to handle.
Description of the drawings
The attached drawing for forming the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the front view of ontology in Fig. 1；
Fig. 3 is the internal structure schematic diagram of Fig. 2；
Fig. 4 is the structure diagram of ontology in Fig. 1；
Fig. 5 is Fig. 2 vertical views.
Reference sign：
1- high-strength prestressed concrete rod irons；2- first end plates；The second end plates of 3-；4- stirrups；5- steel lattice columns；6- is pre-
Stress anchor cable；7- spiral bars；8- steel plates；9- angle steel；10- concrete；11- high-pressure rotary jet grouting piles.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
In the description of the present invention, it is to be understood that term " " center ", " longitudinal direction ", " transverse direction ", " on ", " under ",
The orientation or position relationship of the instructions such as "front", "rear", "left", "right", " vertical ", " level ", " top ", " bottom ", " interior ", " outer " are
Based on orientation shown in the drawings or position relationship, it is for only for ease of the description present invention and simplifies description rather than instruction or dark
Show that signified device or element there must be specific orientation, with specific azimuth configuration and operation, therefore it is not intended that right
The limitation of the present invention.In addition, term " first ", " second " etc. are only used for description purpose, and it is not intended that instruction or hint phase
To importance or the implicit quantity for indicating indicated technical characteristic.The feature for defining " first ", " second " etc. as a result, can
To express or implicitly include one or more this feature.In the description of the present invention, unless otherwise indicated, " multiple "
It is meant that two or more.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " installation ", " phase
Even ", " connection " should be interpreted broadly, for example, it may be being fixedly connected or being detachably connected or be integrally connected；It can
To be mechanical connection or be electrically connected；It can be directly connected, can also be indirectly connected by intermediary, Ke Yishi
Connection inside two elements.For the ordinary skill in the art, above-mentioned term can be understood by concrete condition
Concrete meaning in the present invention.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
As shown in Fig. 1~5, a kind of novel foundation pit supporting pile, including：Ontology, the ontology include concrete 10, steel latticework
Column 5 and two steel reinforcement cage compositions, two steel reinforcement cages are connected to the both ends of steel lattice column 5, and steel reinforcement cage includes stirrup 4 and height
Intensity prestressed concrete steel stick 1 is fixedly connected between stirrup 4 and high-strength prestressed concrete stick 1, two steel reinforcement cage phases
Mutually separate one end is connected separately with a first end plate 2, and the outside of steel lattice column 5 and two steel reinforcement cages has poured concrete
10。
The steel lattice column 5 includes angle steel 9 and steel plate 8.
The steel reinforcement cage is connected with spiral bar 7 close to one end of first end plate 2, passes through between steel reinforcement cage and steel lattice column 5
Second end plate 3 is fixedly connected.
It is connected with multiple prestress anchorage cables 6 on the outside of the ontology, prestress anchorage cable 6 is into " Qian " font, prestress anchorage cable 6
Both ends be all connected to first end plate 2.
Wherein one end of the ontology is connected with high-pressure rotary jet grouting pile 11.
The cross sectional shape of the ontology is round, square, rectangle or triangle.
A kind of base pit stand construction, includes the following steps：
Step A, preparative work before construction, pile compacting equipment admission, surveying setting-out.
Step B, piling：Ontology is tilted to calculating absolute altitude by the press-in soil body by pile press machine.
Step C, slip casting prepare：High-pressure rotary-spray equipment connects nozzle, and nozzle is connected to drill bit, make drill bit and nozzle from
The stake holes top of foundation pit supporting pile penetrates, and stretches into the soil body of body lower part.
Step D, rotary jet grouting：High-pressure rotary-spray equipment controls nozzle to carry out rotary jet grouting to the soil body of body lower part.
Step E according to construction demand, the concrete 10 in 5 outside of steel lattice column is rejected, is exposed to steel lattice column 5 outer
The ontology on soil body top is handled recycling by side.
In the step A, the axis of ontology and the angle of vertical direction are 20 °~40 °.
In the step D, high-pressure rotary-spray equipment is entered by pipeline connection in nozzle, and by nozzle from the stake holes of ontology,
Steel lattice column 5 is then passed through, finally stretches into the soil body of body lower part.
In the step E, nozzle whitewashes to the soil body of 10~20cm of body lower part, forms high-pressure rotary jet grouting pile 11.
In Fig. 1, by 10 cross-section of concrete of body exterior, for observing the steel lattice column 5 of body interior, reality is originally
The outside of body is the concrete 10 uniformly poured.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (10)
1. a kind of foundation pit supporting pile, which is characterized in that including：Ontology, the ontology include concrete (10), steel lattice column (5)
With two steel reinforcement cages, two steel reinforcement cages are connected to the both ends of steel lattice column (5), and steel reinforcement cage includes stirrup (4) and high-strength
Prestressed concrete steel stick (1) is spent, is fixedly connected between stirrup (4) and high-strength prestressed concrete stick (1), two reinforcing bars
One end that cage is located remotely from each other is connected separately with a first end plate (2), and the outside of steel lattice column (5) and two steel reinforcement cages pours
There is concrete (10).
2. a kind of foundation pit supporting pile according to claim 1, it is characterised in that：The steel lattice column (5) includes angle steel (9)
With steel plate (8).
3. a kind of foundation pit supporting pile according to claim 1, it is characterised in that：The steel reinforcement cage is close to first end plate (2)
One end be connected with spiral bar (7), be fixedly connected between steel reinforcement cage and steel lattice column (5) by the second end plate (3).
4. a kind of foundation pit supporting pile according to claim 1, it is characterised in that：It is connected on the outside of the ontology multiple pre-
Stress anchor cable (6), prestress anchorage cable (6) are all connected to first end plate (2) into " Qian " font, the both ends of prestress anchorage cable (6).
5. a kind of foundation pit supporting pile according to claim 1, it is characterised in that：Wherein one end of the ontology is connected with height
Pressure rotary-spraying stake (11).
6. a kind of foundation pit supporting pile according to claim 1, it is characterised in that：The cross sectional shape of the ontology for it is round,
Square, rectangle or triangle.
7. a kind of base pit stand construction, using a kind of foundation pit supporting pile of any one of claim 1~6, which is characterized in that
Include the following steps：
Step A, preparative work before construction, pile compacting equipment admission, surveying setting-out；
Step B, piling：Ontology is tilted to calculating absolute altitude by the press-in soil body by pile press machine；
Step C, slip casting prepare：High-pressure rotary-spray equipment connects nozzle, and nozzle is connected to drill bit, makes drill bit and nozzle from foundation pit
The stake holes top of support pile penetrates, and stretches into the soil body of body lower part；
Step D, rotary jet grouting：High-pressure rotary-spray equipment controls nozzle to carry out rotary jet grouting to the soil body of body lower part；
Step E according to construction demand, the concrete (10) on the outside of steel lattice column (5) is rejected, is exposed to steel lattice column (5)
The ontology on soil body top is handled recycling by outside.
8. a kind of base pit stand construction according to claim 7, it is characterised in that：In the step A, the axis of ontology
The angle of line and vertical direction is 20 °~40 °.
9. a kind of base pit stand construction according to claim 7, it is characterised in that：In the step D, high-pressure rotary-spray
Equipment is entered by pipeline connection in nozzle, and by nozzle from the stake holes of ontology, is then passed through steel lattice column (5), is finally stretched into this
The soil body of body lower part.
10. a kind of base pit stand construction according to claim 7, it is characterised in that：In the step E, nozzle pair
The soil body of 10~20cm of body lower part is whitewashed, and forms high-pressure rotary jet grouting pile (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810215096.1A CN108222024A (en) | 2018-03-15 | 2018-03-15 | A kind of novel foundation pit supporting pile and its construction method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810215096.1A CN108222024A (en) | 2018-03-15 | 2018-03-15 | A kind of novel foundation pit supporting pile and its construction method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108222024A true CN108222024A (en) | 2018-06-29 |
Family
ID=62658462
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810215096.1A Pending CN108222024A (en) | 2018-03-15 | 2018-03-15 | A kind of novel foundation pit supporting pile and its construction method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108222024A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176327A (en) * | 1996-12-17 | 1998-06-30 | Kajima Corp | Combined pile and execution working method thereof |
| CN202688989U (en) * | 2012-07-18 | 2013-01-23 | 上海建工二建集团有限公司 | Upright pile |
| CN103422493A (en) * | 2013-08-15 | 2013-12-04 | 东通岩土科技（杭州）有限公司 | Upright column pile for foundation pit |
| CN105113492A (en) * | 2015-08-17 | 2015-12-02 | 化学工业岩土工程有限公司 | Construction method of composite pile applicable to cohesive soil, sandy soil and muddy soil foundations |
| JP2017057616A (en) * | 2015-09-16 | 2017-03-23 | 前田製管株式会社 | Steel pipe concrete composite pile, its manufacturing method and pile head processing method |
| CN106677170A (en) * | 2017-01-24 | 2017-05-17 | 上海长凯岩土工程有限公司 | Construction method for combining steel member with cement paste to form force body |
| CN206457811U (en) * | 2017-01-16 | 2017-09-01 | 建研地基基础工程有限责任公司 | A kind of prefabricated rectangular hollow pile |
| CN208328941U (en) * | 2018-03-15 | 2019-01-04 | 天津建城基业集团有限公司 | A kind of novel foundation pit supporting pile |
-
2018
- 2018-03-15 CN CN201810215096.1A patent/CN108222024A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10176327A (en) * | 1996-12-17 | 1998-06-30 | Kajima Corp | Combined pile and execution working method thereof |
| CN202688989U (en) * | 2012-07-18 | 2013-01-23 | 上海建工二建集团有限公司 | Upright pile |
| CN103422493A (en) * | 2013-08-15 | 2013-12-04 | 东通岩土科技（杭州）有限公司 | Upright column pile for foundation pit |
| CN105113492A (en) * | 2015-08-17 | 2015-12-02 | 化学工业岩土工程有限公司 | Construction method of composite pile applicable to cohesive soil, sandy soil and muddy soil foundations |
| JP2017057616A (en) * | 2015-09-16 | 2017-03-23 | 前田製管株式会社 | Steel pipe concrete composite pile, its manufacturing method and pile head processing method |
| CN206457811U (en) * | 2017-01-16 | 2017-09-01 | 建研地基基础工程有限责任公司 | A kind of prefabricated rectangular hollow pile |
| CN106677170A (en) * | 2017-01-24 | 2017-05-17 | 上海长凯岩土工程有限公司 | Construction method for combining steel member with cement paste to form force body |
| CN208328941U (en) * | 2018-03-15 | 2019-01-04 | 天津建城基业集团有限公司 | A kind of novel foundation pit supporting pile |
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