CN104775417B - The mattress layer and major diameter rigid pile composite foundation of major diameter rigid pile composite foundation - Google Patents
The mattress layer and major diameter rigid pile composite foundation of major diameter rigid pile composite foundation Download PDFInfo
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- CN104775417B CN104775417B CN201510192767.3A CN201510192767A CN104775417B CN 104775417 B CN104775417 B CN 104775417B CN 201510192767 A CN201510192767 A CN 201510192767A CN 104775417 B CN104775417 B CN 104775417B
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- mattress layer
- pressure cell
- reinforcing bar
- composite foundation
- major diameter
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D1/00—Investigation of foundation soil in situ
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Structural Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Soil Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Analytical Chemistry (AREA)
- Chemical & Material Sciences (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of mattress layer of major diameter rigid pile composite foundation and major diameter rigid pile composite foundation, for solving the existing ropy problem of ground mattress layer.The upper surface of the mattress layer of the present invention is provided with least one upper pressure cell, the lower surface of the mattress layer is provided with least one lower pressure cell, the upper pressure cell and lower pressure cell are correspondingly arranged up and down, and reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer.The present invention can monitor the compacting situation of each position of mattress layer so that the mattress layer of each position can uniformly be tamped, and improve the quality of mattress layer by setting pressure cell on the upper and lower surface of mattress layer.
Description
Technical field
The invention belongs to major diameter rigid pile composite foundation technical field, and in particular to a kind of major diameter rigid pile is compoundly
The mattress layer and major diameter rigid pile composite foundation of base.
Background technology
When subsoil can not meet requirement of the building to ground, it is necessary to carry out basement process, artificial foundation is formed,
To ensure the safety and normal use of building.Main methods of the composite foundation as artificial foundation are buildings frequently with
Artificial foundation's method.
Composite foundation is mainly that subsoil part soil during basement process is strengthened or is replaced or in day
Reinforcement material is set in right ground, stabilization zone is by the subsoil soil body and reinforcement artificial foundation dimerous, on top
Under structural loads, the effect of the subsoil soil body and reinforcement shared load, the condition of form compound foundation be matrix and
Reinforcement shares load jointly in the presence of load, by both compatibilities of deformation.
Composite foundation be generally divided into Composite Foundation of Soil cement Mixing Piles, high pressure jet grouting pile composite foundation, sand pile ground,
Vibroflotation pile composite foundation, soil and dirt both close pile composite foundation, CFG Compound Foundation and rammed concrete pile
Composite foundation.
CFG stakes are English Cement Fly-ash Gravel abbreviations, CFG are meant, by rubble, stone
Bits, sand, flyash mixed cement plus water mix, and have the variable intensity stake of some strength made of various forming machinery.CFG stakes
It is a kind of Low Intensity Concrete Piles, the bearing capacity collective effect of inter-pile soil can be made full use of, and load can be transmitted to deep foundation base
In, there is preferable technical skills and economic effect.
By adjusting cement mixing content and proportioning, its strength grade changes between C15-C25, is between rigid pile and flexibility
A kind of pile-type between stake.CFG stakes and inter-pile soil form CFG pile composite foundation cooperations together, by mattress layer, therefore can root
According to composite foundation character and calculate progress engineering design.CFG stakes do not have to typically calculate arrangement of reinforcement, and also using Industry Waste feed powder
Coal ash and aggregate chips make admixture, reduce further construction costs, and therefore, CFG stakes have extremely strong practicality.
Such as the utility model patent of Application No. 201320732862.4 discloses a kind of spiral pump pressure CFG stakes, including
CFG pile bodies, block is provided with CFG pile bodies, sandy gravel stratum is provided with block, ground is provided with above sandy gravel stratum；
Sandy gravel stratum thickness is 0.5~3m.
CFG pile constructing process mainly includes the following steps that：
1st, stake machine enters scene, determines bracket height and immersed tube length according to designing pile length, immersed tube embedded depth, and carry out
Equipment assembles；
2nd, stake machine is just that adjustment immersed tube is perpendicular to the ground, it is ensured that perpendicularity deviation meets technological requirement（Ordinary circumstance is sagging
Straight degree deviation is not more than 1%）；
3rd, starter motor, the predetermined absolute altitude in immersed tube road, shut down；
4th, made a record during immersed tube, the electric current often to sink on 1m recording ammeters once, and to being given at soil layer change
Explanation；
5th, the concrete perfusion into pipe immediately after shutting down, until concrete is concordant with charging aperture, after pile, laitance thickness is not
It is advisable more than 10cm；
6th, starter motor, 5-10s of vibration staying, start tube drawing, pipe-drawn speed is generally 1.2-1.5m/min, such as pre- mud or
Muck soil, pipe-drawn speed should also slow down, and anti-plug is not allowed during tube drawing；, must be aerial during tube drawing such as feeding deficiency
Feed intake, to ensure that top mark up to arrives design requirement after pile；
7th, immersed tube extracts ground, after confirming the requirement of pile composite design, is bound with bulk material or wet cohesive soil.
Due to the restriction of pile body diameter, making that the topside area of its pile body is small, and area replacement ratio is relatively low, pile-soil stress is larger,
The punching failure of stake is easily lead to, therefore, bulk material is needed at the top of pile body or wet cohesive soil binds, in industry
It is called mattress layer.
Such as the patent of invention of Application No. 201410217327.4 discloses a kind of expand at the base expanding and base expanding CFG pile composite foundations of top
Reason method, the composite foundation include pile body, pile cover, stake bottom, mattress layer, mattress thickness are set between pile cover and building basis
Degree takes 0.4~0.6 times of pile body diameter, and the width of mattress layer is more than building bottom of foundation width 400mm, and mattress layer uses grain
Middle sand of the footpath less than 30mm, coarse sand, graded sand and stone and rubble laying, its sand coarse aggregate ratio are that 3: 7 bottoms are compacting filler, and compacting is filled out
Expect the brickbat for 50~100mm of diameter, broken concrete, cement mixture, rubble, cobble and slag or its combination, stake bottom
Volume is 0.5m3~1.8m3。
Existing mattress layer is mostly directly to mattress layer material（Middle sand, coarse sand, rubble etc.）Compacting processing is carried out, however,
Because the soft degree of the earth's surface soil body is inconsistent, and the variable thickness of mattress layer material-paving causes, and causes each position of mattress layer
The tightness degree put is inconsistent, so as to cause whole mattress layer of poor quality.
The content of the invention
The present invention can not cause mattress to solve prior art to mattress layer stress deformation measuring method imperfection
The ropy problem of layer, and the mattress layer and major diameter rigid pile composite foundation of a kind of major diameter rigid pile composite foundation are provided,
The uniform force of each position of mattress layer is enabled to, improves the quality of mattress layer, so as to improve whole major diameter rigid pile
The bearing capacity of composite foundation.
In order to solve the above technical problems, the technical solution adopted in the present invention is：
A kind of mattress layer of major diameter rigid pile composite foundation, it is characterised in that the upper surface of the mattress layer is provided with
At least one upper pressure cell, the lower surface of the mattress layer are provided with least one lower pressure cell, the upper pressure cell and push
Power box is correspondingly arranged up and down, and reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer.Mattress layer is arranged on pile body
Top, those skilled in the art can be appreciated and understood that, will not be repeated here.
An at least reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer.
The reinforcing bar is uniformly connected with reinforcing rib meter.
The periphery of the reinforcing bar is connected with hangnail.
The periphery for being arranged on reinforcing bar at the hangnail interval.
A kind of major diameter rigid pile composite foundation, including pile body and the mattress layer for being arranged on pile body upper end, the mattress layer
Lower section at least provided with a pile body, it is characterised in that the upper surface of the mattress layer is provided with least one upper pressure cell,
The lower surface of the mattress layer is provided with least one lower pressure cell, and the upper pressure cell and lower pressure cell are correspondingly arranged up and down,
Reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer.
An at least reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer.
The reinforcing bar is uniformly connected with reinforcing rib meter.
The periphery of the reinforcing bar is connected with hangnail.
The periphery for being arranged on reinforcing bar at the hangnail interval.
Compared with prior art, the invention has the advantages that：
The mattress layer of the major diameter rigid pile composite foundation of the present invention, by setting pressure on the upper and lower surface of mattress layer
Box, the compacting situation of each position of mattress layer can be monitored so that the mattress layer of each position can uniformly be tamped, and improve cotton-padded mattress
The quality of bed course.
Reinforcing bar is provided with the mattress layer of invention simultaneously, if the mattress layer discontinuity of adjacent position, passes through reinforcing bar energy
Enough drive mattress layer material to slide, so as to disperse the distribution of material in mattress layer, improve the quality of mattress layer.
Reinforcing rib meter is also associated with the reinforcing bar of the present invention, the stress feelings of each position inside mattress layer can be monitored in time
Condition, it is easy to the adjustment of compacting process, so as to improve the quality of mattress layer.
The CFG pile composite foundations of the present invention, pass through the improvement to mattress layer, it is possible to increase the quality of mattress layer, so as to carry
The quality of high composite foundation.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment of mattress layer one of the present invention；
Fig. 2 is the structural representation of another embodiment of the mattress layer of the present invention；
Fig. 3 is the structural representation of an embodiment of the composite foundation of the present invention；
Fig. 4 is the structural representation of another embodiment of the composite foundation of the present invention；
Marked in figure：1st, mattress layer, 2, pile body, 3, lower pressure cell, 4, upper pressure cell, 5, reinforcing bar, 6, reinforcing rib meter, 7, fall
Thorn.
Embodiment
With reference to embodiment, the invention will be further described, and described embodiment is only a present invention part
Embodiment, it is not whole embodiments.Based on the embodiment in the present invention, one of ordinary skill in the art is not making
Other embodiments used obtained under the premise of creative work, belong to protection scope of the present invention.
With reference to Fig. 1, Fig. 2, the mattress layer of major diameter rigid pile composite foundation of the invention, the upper surface of mattress layer 1 is set
There is at least one upper pressure cell 4, the lower surface of the mattress layer 1 is provided with least one lower pressure cell 3, the upper pressure cell 4
It is correspondingly arranged with lower pressure cell about 3, reinforcing bar 5 is equipped with the horizontal direction of the interior edge mattress layer 1 of mattress layer 1.Mattress layer 1
The top of pile body is arranged on, those skilled in the art can be appreciated and understood that, will not be repeated here.It is of the invention only to exist
The lower surface of mattress layer 1 sets lower pressure cell, and mainly the compacting situation of the lower surface of mattress layer is monitored.
Mattress is during construction, because the soft degree of ground layer soil body differs, while the material when laying mattress layer
The variable thickness of accumulation so that the compacting of each position of mattress layer is inconsistent, causes mattress layer of poor quality.
The mattress layer of the major diameter rigid pile composite foundation of the present invention, by setting pressure on the upper and lower surface of mattress layer 1
Box, the compacting situation of each position of mattress layer can be monitored so that the mattress layer of each position can uniformly be tamped, and improve cotton-padded mattress
The quality of bed course.
Reinforcing bar 5 is provided with the mattress layer of invention simultaneously, if the discontinuity of mattress layer 1 of adjacent position, passes through reinforcing bar 5
Mattress layer material can be driven to slide, so as to disperse the distribution of material in 1 layer of mattress, improve the quality of mattress layer.Wherein this hair
Bright told about upper and lower pressure cell, reinforcing rib meter belong to prior art products, and those skilled in the art can understand and manage
Solution, will not be repeated here.
An at least reinforcing bar 5 is equipped with the horizontal direction of the interior edge mattress layer 1 of mattress layer 1, the quantity of reinforcing bar can basis
The thickness of mattress layer is laid, and those skilled in the art can be appreciated and understood that, will not be repeated here.
As a kind of preferable mode of the present invention, reinforcing bar 5 is uniformly connected with reinforcing rib meter 6, can monitored in time in mattress layer
The stressing conditions of each position in portion, are easy to the adjustment of compacting process, so as to improve the quality of mattress layer.
In order to improve regulating power of the reinforcing bar to the material of mattress layer 1, the periphery of reinforcing bar 5 is connected with hangnail 7, carried by hangnail
The regulating power of high reinforcing bar, further improve the practicality of the present invention.
As a kind of preferable mode of the present invention, the periphery for being arranged on reinforcing bar 5 that hangnail 7 is spaced.
With reference to Fig. 3 and Fig. 4, present invention also offers a kind of major diameter rigid pile composite foundation, including pile body 2 and it is arranged on
The mattress layer 1 of the upper end of pile body 2, the lower section of the mattress layer 1 are set at least provided with a pile body 2, the upper surface of the mattress layer 1
At least one upper pressure cell 4 is equipped with, the lower surface of the mattress layer 1 is provided with least one lower pressure cell 3, the upper pressure cell
4 and lower pressure cell be correspondingly arranged about 3, be equipped with reinforcing bar 5 in the horizontal direction of the interior edge mattress layer 1 of mattress layer 1.The present invention
CFG pile composite foundations the improvement also improvement to mattress layer, before done detailed description, will not be repeated here.
Embodiment one
The mattress layer of the major diameter rigid pile composite foundation of the present embodiment, the upper surface of the mattress layer are provided with least one
Individual upper pressure cell, the lower surface of the mattress layer are provided with least one lower pressure cell, on the upper pressure cell and lower pressure cell
Under be correspondingly arranged, be equipped with reinforcing bar in the horizontal direction of the mattress layer interior edge mattress layer.
Embodiment two
The mattress layer of the major diameter rigid pile composite foundation of the present embodiment, the upper surface of the mattress layer are provided with least one
Individual upper pressure cell, the lower surface of the mattress layer are provided with least one lower pressure cell, on the upper pressure cell and lower pressure cell
Under be correspondingly arranged, an at least reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer.
Embodiment three
The mattress layer of the major diameter rigid pile composite foundation of the present embodiment, the upper surface of the mattress layer are provided with least one
Individual upper pressure cell, the lower surface of the mattress layer are provided with least one lower pressure cell, on the upper pressure cell and lower pressure cell
Under be correspondingly arranged, an at least reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer；The reinforcing bar uniformly connects
It is connected to reinforcing rib meter.
Example IV
The mattress layer of the major diameter rigid pile composite foundation of the present embodiment, the upper surface of the mattress layer are provided with least one
Individual upper pressure cell, the lower surface of the mattress layer are provided with least one lower pressure cell, on the upper pressure cell and lower pressure cell
Under be correspondingly arranged, an at least reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer；The reinforcing bar uniformly connects
It is connected to reinforcing rib meter；The periphery of the reinforcing bar is connected with hangnail.
Embodiment five
The mattress layer of the major diameter rigid pile composite foundation of the present embodiment, the upper surface of the mattress layer are provided with least one
Individual upper pressure cell, the lower surface of the mattress layer are provided with least one lower pressure cell, on the upper pressure cell and lower pressure cell
Under be correspondingly arranged, an at least reinforcing bar is equipped with the horizontal direction of the mattress layer interior edge mattress layer；The reinforcing bar uniformly connects
It is connected to reinforcing rib meter；The periphery of the reinforcing bar is connected with hangnail；The periphery for being arranged on reinforcing bar at the hangnail interval.
Embodiment six
The major diameter rigid pile composite foundation of the present embodiment, including pile body and the mattress layer for being arranged on pile body upper end, it is described
At least provided with a pile body, the upper surface of the mattress layer is provided with least one upper pressure cell, described for the lower section of mattress layer
The lower surface of mattress layer is provided with least one lower pressure cell, and the upper pressure cell and lower pressure cell are correspondingly arranged up and down, described
Reinforcing bar is equipped with the horizontal direction of mattress layer interior edge mattress layer.
Embodiment seven
The major diameter rigid pile composite foundation of the present embodiment, including pile body and the mattress layer for being arranged on pile body upper end, it is described
At least provided with a pile body, the upper surface of the mattress layer is provided with least one upper pressure cell, described for the lower section of mattress layer
The lower surface of mattress layer is provided with least one lower pressure cell, and the upper pressure cell and lower pressure cell are correspondingly arranged up and down, described
Reinforcing bar is equipped with the horizontal direction of mattress layer interior edge mattress layer；The reinforcing bar is uniformly connected with reinforcing rib meter.
Embodiment eight
The major diameter rigid pile composite foundation of the present embodiment, including pile body and the mattress layer for being arranged on pile body upper end, it is described
At least provided with a pile body, the upper surface of the mattress layer is provided with least one upper pressure cell, described for the lower section of mattress layer
The lower surface of mattress layer is provided with least one lower pressure cell, and the upper pressure cell and lower pressure cell are correspondingly arranged up and down, described
Reinforcing bar is equipped with the horizontal direction of mattress layer interior edge mattress layer；The reinforcing bar is uniformly connected with reinforcing rib meter；Outside the reinforcing bar
Enclose and be connected with hangnail.
Claims (6)
1. the mattress layer of major diameter rigid pile composite foundation, it is characterised in that the upper surface of the mattress layer is provided with least one
Individual upper pressure cell, the lower surface of the mattress layer are provided with least one lower pressure cell, on the upper pressure cell and lower pressure cell
Under be correspondingly arranged, be equipped with reinforcing bar in the horizontal direction of the mattress layer interior edge mattress layer；The mattress layer interior edge mattress layer
An at least reinforcing bar is equipped with horizontal direction；The reinforcing bar is uniformly connected with reinforcing rib meter；The periphery of the reinforcing bar is connected with down
Thorn；The periphery for being arranged on reinforcing bar at the hangnail interval.
2. major diameter rigid pile composite foundation, including pile body and the mattress layer for being arranged on pile body upper end, the lower section of the mattress layer
At least provided with a pile body, it is characterised in that the upper surface of the mattress layer is provided with least one upper pressure cell, the cotton-padded mattress
The lower surface of bed course is provided with least one lower pressure cell, and the upper pressure cell and lower pressure cell are correspondingly arranged up and down, the cotton-padded mattress
Reinforcing bar is equipped with the horizontal direction of bed course interior edge mattress layer.
3. major diameter rigid pile composite foundation according to claim 2, it is characterised in that the mattress layer interior edge mattress layer
Horizontal direction on be equipped with an at least reinforcing bar.
4. major diameter rigid pile composite foundation according to claim 3, it is characterised in that the reinforcing bar is uniformly connected with steel
Muscle meter.
5. according to any described major diameter rigid pile composite foundation of claim 2-4, it is characterised in that outside the reinforcing bar
Enclose and be connected with hangnail.
6. major diameter rigid pile composite foundation according to claim 5, it is characterised in that the hangnail interval is arranged on
The periphery of reinforcing bar.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192767.3A CN104775417B (en) | 2015-04-22 | 2015-04-22 | The mattress layer and major diameter rigid pile composite foundation of major diameter rigid pile composite foundation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510192767.3A CN104775417B (en) | 2015-04-22 | 2015-04-22 | The mattress layer and major diameter rigid pile composite foundation of major diameter rigid pile composite foundation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104775417A CN104775417A (en) | 2015-07-15 |
| CN104775417B true CN104775417B (en) | 2017-12-26 |
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ID=53617158
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510192767.3A Active CN104775417B (en) | 2015-04-22 | 2015-04-22 | The mattress layer and major diameter rigid pile composite foundation of major diameter rigid pile composite foundation |
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| CN (1) | CN104775417B (en) |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2710008B2 (en) * | 1993-12-28 | 1998-02-10 | 株式会社国土基礎 | Steel pipe pile with wing for load test |
| JP5984085B2 (en) * | 2012-01-16 | 2016-09-06 | 株式会社グレイプ | Foundation structure and foundation construction method |
| CN103556620B (en) * | 2013-09-26 | 2015-06-10 | 南京雨桩建筑科技有限公司 | Method for enhancing bearing capacity of composite foundation and rigid pile thereof |
| CN204530662U (en) * | 2015-04-22 | 2015-08-05 | 中冶成都勘察研究总院有限公司 | The mattress layer of major diameter rigid pile composite foundation and major diameter rigid pile composite foundation |
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2015
- 2015-04-22 CN CN201510192767.3A patent/CN104775417B/en active Active
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