CN201512806U - Micro-pile combined digging composite foundation - Google Patents
Micro-pile combined digging composite foundation Download PDFInfo
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- CN201512806U CN201512806U CN200920247010XU CN200920247010U CN201512806U CN 201512806 U CN201512806 U CN 201512806U CN 200920247010X U CN200920247010X U CN 200920247010XU CN 200920247010 U CN200920247010 U CN 200920247010U CN 201512806 U CN201512806 U CN 201512806U
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- digging
- pile
- dug
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Abstract
The utility model provides a micro-pile combined digging composite foundation, which includes a digging foundation and a micro-pile, wherein the digging foundation is made by reinforcing bars and concrete casting, the micro-pile includes a reinforcement cage and concrete around the reinforcement cage, and the top part of the micro-pile extends into the digging foundation. The micro-pile combined digging composite foundation reduce the soil body digging amount, and reduce the upper part manual digging part depth, thereby facilitating construction.
Description
Technical field
The utility model relates to power system basic engineering construction field, relates in particular to a kind of micro-pile combined dug composite foundation.
Background technology
Mini pile refers to the slim hole castinplace pile of diameter between 0.10m～0.40m, and traditional mini pile generally adopts reinforcement cage skeleton to put into boring, and penetration concrete forms in the boring again.Or reinforcing cage put into boring, and in boring, drop into crushed stone aggregate again, inject cement paste toward the boring mesohigh again and form.The mini pile basis generally is applied in the soft foundation at present, forms multi-column pier foundation by many piles simultaneously.
Digging foundation is a kind of base form that adopt in loess foundation on the electric power line pole tower basis, its working procedure is: press the artificial digging foundation hole of base shape, cloth muscle, fluid concrete moulding, its constructional drawing as shown in Figure 1, this basis has following defective in actual applications: when the pole and tower foundation load is big, need draw and dig the very big degree of depth, difficulty of construction is bigger, digs owing to drawing to dig to manually drawing simultaneously, the need workman enters to draw in the foundation pit and digs, and draws to dig to have the personal security problem too deeply.
The utility model content
In order to overcome defective of the prior art, the utility model provides a kind of minimizing to draw and has dug the degree of depth, the micro-pile combined dug composite foundation of being convenient to construct.
For this reason, the utility model proposes a kind of micro-pile combined dug composite foundation, comprise digging foundation and mini pile, the top of described mini pile is stretched in the digging foundation.
Wherein, described digging foundation is formed by arrangement of reinforcement and concreting, and described mini pile comprises reinforcing cage and is centered around reinforcing cage concrete or cement mortar on every side.
Wherein, described reinforcing cage comprises main muscle and stirrup, and described stirrup is located at the main muscle outside, and the top of described main muscle extend in the digging foundation.
Wherein, described main muscle extend into length in the digging foundation more than or equal to 40 times of main muscle diameter.
Wherein, the top of described mini pile extend into height h in the digging foundation more than or equal to 10 centimetres.
Wherein, described digging foundation is convex or rectangle or trapezoidal at the cross sectional shape of vertical direction.
The utility model is used the mini pile that originally is applied in the soft foundation in the loess foundation, unites with digging foundation to form the micro-pile combined dug basis.
The beneficial effects of the utility model are: this micro-pile combined dug composite foundation is compared with traditional digging foundation, has both reduced the soil body and has drawn the amount of digging, and has reduced top again and has manually drawn and dig partial depth, is convenient to construction.
Description of drawings
Fig. 1 is the structural representation of the electric power line pole tower digging foundation of prior art;
Fig. 2 is the structural representation of micro-pile combined dug composite foundation described in the utility model;
Fig. 3 is the concrete structure dimensional drawing of micro-pile combined dug composite foundation described in the utility model;
Wherein, 1-digging foundation, 11-arrangement of reinforcement, 12-concrete, 2-mini pile, 21-reinforcing cage, 211-master's muscle, 212-stirrup, 22-are centered around reinforcing cage concrete or cement mortar on every side.
The specific embodiment
Below in conjunction with accompanying drawing micro-pile combined dug composite foundation of the present utility model is described in further detail.
As shown in Figure 2, this routine described micro-pile combined dug composite foundation comprises digging foundation 1 and four mini piles 2 by arranged in squares, described digging foundation 1 is built by arrangement of reinforcement 11 and concrete 12 and is formed, described mini pile 2 comprises reinforcing cage 21 and is centered around reinforcing cage concrete or cement mortar 22 on every side that the top of described mini pile 2 is stretched in the digging foundation.Described reinforcing cage 21 comprises main muscle 211 and stirrup 212, described four main muscle are arranged to square and per two all intrinsic stirrups 212 that are provided with by zigzag in the main muscle outside, described digging foundation 1 is connected by the main muscle 211 that extend in the digging foundation with mini pile 2, digging foundation 1 is convex at the cross sectional shape of vertical direction, and its cross sectional shape also can be set to rectangle or trapezoidal as required.
As shown in Figure 3, the physical dimension of micro-pile combined dug composite foundation of the present utility model can adopt following parameter: described digging foundation 1 and mini pile 2 all are arranged in the loess formation, described digging foundation 1 is the narrow end of convex and top to lower enlarged end and is provided with the gentle slope, the diameter of its narrow end in top is 0.8m, the diameter of lower enlarged end is 1.1cm, and the vertical height of digging foundation is 1m.Four height by the mini pile 2 of arranged in squares are 6m, spacing between each mini pile is 0.5m, each mini pile all is square, its length of side is 0.2m, main muscle 211 and stirrup 212 adopt the HRB335 II level screw-thread steel of 36mm diameter, water to be filled in reinforcing cage 21 concrete on every side or the cement mortar of cement mortar 22 employing C20 concrete or M20 that is made of main muscle 211 and stirrup 212.
In order to make this composite foundation can bear bigger uplift force, the length that the main muscle 211 that mini pile 2 should be set is imbedded digging foundation 1 is not less than 40 times of main muscle 211 diameters, mini pile 2 tops is set imbeds the height h of digging foundation 1 and be not less than 10cm.Adopt the micro-pile combined dug composite foundation of this routine structure can bear 150 tons even higher uplift force.
The concrete job practices of this routine described micro-pile combined dug composite foundation is as follows:
1) pore-forming
According to design stake footpath and design stake position, iris out the excavation circle with lime on ground.Carry out pore-forming with luoyang spade, every 1m checks a vertical degree of the peg hole in pore forming process.Inspection method can freely be transferred plumb bob around hole wall, if transfer in the process, magnetic is not to hole wall for plumb bob, and then this hole is vertical.
2) after pore-forming finishes, should check aperture and hole depth.Draw by design cushion cap scope and to dig cushion cap scope soil.
3) reinforcing cage and installation
Reinforcing cage is by design and construction regulations requirement construction, and the stirrup of putting more energy into is located at the main muscle outside.
When burying reinforcing cage underground, the mating holes position to hang and directly hold up surely, slowly sink along it, avoid bumping hole wall, sink when not going down, reinforcing cage must be hung out the position, hole if reinforcing cage takes place, carry out cleaning bottom of hole, forbid to flump or method such as manpower twisting forces reinforcing cage sink with the reinforcing cage of slinging.
Behind design attitude, weld a lancet immediately in the above and mention reinforcing cage and be shelved on the steel pipe on ground under the reinforcing cage, prevent from the fluid concrete process reinforcing bar to be thrust in the loess downwards.
4) perfusion mini pile pile concrete
Concrete perfusion pile in the hole.The pvc pipe that can use different length pours into pea gravel concreten in the hole piecemeal, and with vibrating head segmentation vibratory compaction, irritates to design height until concrete as perfusion cannula.
5) the digging foundation part soil body is drawn and is dug
Draw by design basis shape shown in Figure 2 and to dig the top foundation ditch;
6) digging foundation portion distribution bar and concreting
In digging foundation, arrange arrangement of reinforcement by the design drawing requirement, afterwards concreting.
The utility model is described according to specific exemplary embodiment herein.To carry out suitable replacement under the scope of the present utility model or revise will be conspicuous not breaking away to one skilled in the art.Exemplary embodiment only is illustrative, rather than to the restriction of scope of the present utility model, scope of the present utility model is by appended claim definition.
Claims (7)
1. micro-pile combined dug composite foundation, it is characterized in that: this composite foundation comprises digging foundation (1) and mini pile (2), and the top of described mini pile (2) is stretched in the digging foundation.
2. micro-pile combined dug composite foundation as claimed in claim 1, it is characterized in that: described digging foundation (1) is built by arrangement of reinforcement (11) and concrete (12) and is formed, and described mini pile (2) comprises reinforcing cage (21) and is centered around reinforcing cage concrete or cement mortar (22) on every side.
3. micro-pile combined dug composite foundation as claimed in claim 2 is characterized in that: described reinforcing cage (21) comprises main muscle (211) and stirrup (212), and described stirrup is located at main muscle (211) outside, and the top of described main muscle extend in the digging foundation (1).
4. micro-pile combined dug composite foundation as claimed in claim 3 is characterized in that: described main muscle (211) extend into length in the digging foundation (1) more than or equal to 40 times of main muscle (211) diameter.
5. as the arbitrary described micro-pile combined dug composite foundation of claim 1-4, it is characterized in that: the top of described mini pile (2) extend into height h in the digging foundation (1) more than or equal to 10 centimetres.
6. as the arbitrary described micro-pile combined dug composite foundation of claim 1-4, it is characterized in that: described digging foundation (1) is convex or rectangle or trapezoidal at the cross sectional shape of vertical direction.
7. micro-pile combined dug composite foundation as claimed in claim 5 is characterized in that: described digging foundation (1) is convex or rectangle or trapezoidal at the cross sectional shape of vertical direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920247010XU CN201512806U (en) | 2009-11-09 | 2009-11-09 | Micro-pile combined digging composite foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920247010XU CN201512806U (en) | 2009-11-09 | 2009-11-09 | Micro-pile combined digging composite foundation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201512806U true CN201512806U (en) | 2010-06-23 |
Family
ID=42484213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920247010XU Expired - Lifetime CN201512806U (en) | 2009-11-09 | 2009-11-09 | Micro-pile combined digging composite foundation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201512806U (en) |
-
2009
- 2009-11-09 CN CN200920247010XU patent/CN201512806U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20100623 Effective date of abandoning: 20091109 |