CN1195130C - Sand concrete free small pile foundation consolidation process by stone throwing and squeezing - Google Patents
Sand concrete free small pile foundation consolidation process by stone throwing and squeezing Download PDFInfo
- Publication number
- CN1195130C CN1195130C CNB021306400A CN02130640A CN1195130C CN 1195130 C CN1195130 C CN 1195130C CN B021306400 A CNB021306400 A CN B021306400A CN 02130640 A CN02130640 A CN 02130640A CN 1195130 C CN1195130 C CN 1195130C
- Authority
- CN
- China
- Prior art keywords
- pile
- hole
- sand concrete
- soil
- squeezing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Piles And Underground Anchors (AREA)
Abstract
The present invention relates to a method for reinforcing sand-concrete-free small pile foundations by throwing and squeezing stones. The present invention is characterized in that engineering drillers, Luoyang shovels, etc. are used for drilling holes; grouting pipes are respectively inserted into the holes; graded broken stones are thrown into the holes; after the holes are sealed, mortar is injected in a pressure mode to form piles. Pile bodies after the piles are formed and pile periphery soil after mortar intrusion reinforcement form a composite foundation; in this way, poor foundations can be sufficiently improved, and the bearing capacity of the foundations is increased by a large margin. The present invention has the functions of displacement, vertical reinforcement, water drainage, air discharge and consolidation of soil among the piles to the foundations.
Description
Technical field
The present invention relates to a kind of sand concrete free small pile foundation consolidation process by stone throwing and squeezing, refer in particular to the job practices that a kind of ground stabilization that is applied in the geotechnical engineering is handled.
Background technology
Foundation treatment technology is the important component part of architectural engineering technology, and the existing famous pile foundation treatment technology of comparative maturity has following several:
1, the paxilla technology is a kind of bored concrete pile technology of European Suo Le hall house company exploitation, it is characterized in that the minor diameter pressed grouting pile.The stake footpath of paxilla is 70～250mm, draw ratio is greater than 30, (process method construction of grouting pressure 1～2.5MPa), its main feature are that the stake footpath is little, specific area big, the folk prescription concrete can provide bigger bearing capacity to adopt boring, strong arrangement of reinforcement (reinforcement ratio is greater than 1%) and slip casting.
2, bore slurry pressuring pile-forming, after its method is to use the long-spiral drilling machine pore-forming, when carrying brill by being located at drill bit nozzle to hole inner high voltage spray cement paste; In the hole, lay reinforcing cage after pulling out of hole.Insert Grouting Pipe, throw in pellet, carry out high-voltage secondary then and mend slurry.The hole problem of collapsing when being characterized in solving concrete cast under water and pore-forming is than the high 20%-30% of general concrete pile capacity.
3, pressure of the hole in the bottom grouting pile-forming method has another name called post-grouting technology, be in the concrete stake of having watered, to reserve madjack pipe to insert at the bottom of the stake hole, treat after the concrete initial set high-pressure slip-casting at the bottom of stake,, exceed 30%-50% than unidimensional pile capacity to solve the problem of stake end loosened soil and stake side mud skin.
4, pressure grouting technology is to insert Grouting Pipe in soil layer, utilizes grouting pump to inject soil layer cement paste, and cement paste tamps the hole in the soil, plays filling and cementation.This method can be three kinds of slip casing by pressure, compaction grouting and fracture groutings according to pressure size and degree of consolidation branch.
Though above-mentioned pile foundation treatment technology has advantage separately, can not use simultaneously, therefore use occasion separately all is subjected to certain restriction.
Summary of the invention
The objective of the invention is to, a kind of length that can raise above-mentioned foundation treatment technology is provided, weak point, the compliance of keeping away above-mentioned foundation treatment technology is strong, material source is wide, system easy to control the quality, method for processing foundation low for equipment requirements.
The objective of the invention is to realize by following technological means: a kind of sand concrete free small pile foundation consolidation process by stone throwing and squeezing is characterized in that: adopt machinery or manual pore-forming to projected depth, insert Grouting Pipe, Grouting Pipe is not all extracted in the whole formation of pile; The rubble of throwing in certain grating in the hole is to the aperture immediately, and vibration compacting; In the hole, inject the cement grout of an amount of flyash of admixture behind the sealing of hole stage by stage by Grouting Pipe, part slurries wherein infiltrate and form cement-soil in the soil layer body, the part slurries are then stayed in the hole, form the sand concrete free pile body with broken, cobble, and the inter-pile soil after pile body and the reinforcing forms composite foundation.
Described a kind of sand concrete free small pile foundation consolidation process by stone throwing and squeezing can insert reinforcing cage in the stake hole, lapidation slip casting forms arrangement of reinforcement sand concrete free paxilla.
In slip casting process stage by stage, at first inject cement grout, when second pulp feeding, inject cement mortar, the compactness of pile body further improves in the middle of can making.
The invention has the advantages that: the first, the present invention is very strong to the compliance of soil property, can be used for soil layer nearly all except that gravelly soil; And wide, the easy to control the quality system of the material source of its use, low for equipment requirements.The second, adopt the present invention to carry out Measures for Making Ground and Foundation, can reduce investment outlay 15%～20%, the reduction of erection time 30%, and foundation strength to improve scope big, the amplitude adjustment is flexible.The 3rd, because technical characterstic of the present invention is except that forming mud jacking pile body (vertically strengthening body), also have the double technique effect of pressure grouting, therefore both can form composite foundation also can make pile foundation.By in displacement of the rubble of foundation soil and the broken stone pile slip casing by pressure of steel Grouting Pipe being set, forming by the rubble concrete and strengthen the dual composite foundation that body and slip casting soil layer constitute jointly.The stake side end resistance after the slip casting and the bearing capacity of soil layer and modulus of deformation all have the raising of suitable amplitude.The 4th, the present invention can be widely used in building, the ground stabilization of highway, municipal engineering is handled, and both can be used for having the ground stabilization of building, also can be used for the post processing of the soft base of the high embankment of speedway, especially the latter is had unique treatment effect.
Description of drawings
Fig. 1 is for using the schematic diagram of drill bit pore-forming in the present invention's application.
Fig. 2 is for descending the schematic diagram of Grouting Pipe in pore-forming in the present invention's application.
Fig. 3 for the present invention use in to the schematic diagram of pore-forming lapidation material.
Fig. 4 is for carrying out the schematic diagram of low-pressure grouting in the present invention's application.
Fig. 5 is the schematic diagram of sealing of hole in the present invention's application.
Fig. 6 is the schematic diagram of the laggard horizontal high voltage slip casting of sealing of hole in the present invention's application.
Fig. 7 for the present invention use in the schematic diagram of secondary grouting after the pile body initial set.
The specific embodiment
Describe technical characterstic of the present invention in detail below in conjunction with accompanying drawing.
As shown in Figure 1, the present invention adopts machinery or manual pore-forming earlier (the stake footpath is 150～450mm) to projected depth, and (Grouting Pipe is not extracted, as shown in Figure 2) to insert Grouting Pipe; The rubble of throwing in certain grating in the hole is to the aperture immediately, and vibration compacting (as shown in Figure 3); Carry out sealing of hole (as shown in Figure 4 and Figure 5) behind the low-pressure grouting; Inject cement grout (but an amount of flyash of admixture) stage by stage by Grouting Pipe in the hole behind the sealing of hole, part slurries wherein infiltrate and form cement-soil in the soil body, and the part slurries are stayed in the hole, form sand concrete free pile body (as shown in Figure 6) with broken (ovum) stone; After the pile body initial set, carry out secondary grouting (as shown in Figure 7) pile.Stake week soil behind pile body behind the pile and the grouting reinforcement forms composite foundation, can substantially improve unfavorable foundation and increase substantially its bearing capacity, has displacement, vertically strengthens the multiple action mechanism of body and the fixed inter-pile soil of drainage exhaust.
The present invention also can insert reinforcing cage (but steel Grouting Pipe equivalent substitution part longitudinal reinforcement) in the stake hole, lapidation slip casting forms arrangement of reinforcement sand concrete free paxilla, can bear uplift force and horizontal loading.In slip casting process stage by stage, at first inject cement grout, inject cement mortar during second pulp feeding, the compactness of pile body further improves in the middle of can making.
Claims (3)
1, a kind of sand concrete free small pile foundation consolidation process by stone throwing and squeezing is characterized in that: adopt machinery or manual pore-forming to projected depth, insert Grouting Pipe, Grouting Pipe is not all extracted in the whole formation of pile; The rubble of throwing in certain grating in the hole is to the aperture immediately, and vibration compacting; In the hole, inject the cement grout of an amount of flyash of admixture behind the sealing of hole stage by stage by Grouting Pipe, part slurries wherein infiltrate and form cement-soil in the soil layer body, the part slurries are then stayed in the hole, form the sand concrete free pile body with broken, cobble, and the inter-pile soil after pile body and the reinforcing forms composite foundation.
2, a kind of sand concrete free small pile foundation consolidation process by stone throwing and squeezing according to claim 1 is characterized in that: can insert reinforcing cage in the stake hole, lapidation slip casting forms arrangement of reinforcement sand concrete free paxilla.
3, a kind of sand concrete free small pile foundation consolidation process by stone throwing and squeezing according to claim 1, it is characterized in that: in slip casting process stage by stage, at first inject cement grout, inject cement mortar when second pulp feeding, the compactness of pile body further improves in the middle of can making.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021306400A CN1195130C (en) | 2002-09-10 | 2002-09-10 | Sand concrete free small pile foundation consolidation process by stone throwing and squeezing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB021306400A CN1195130C (en) | 2002-09-10 | 2002-09-10 | Sand concrete free small pile foundation consolidation process by stone throwing and squeezing |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1482307A CN1482307A (en) | 2004-03-17 |
| CN1195130C true CN1195130C (en) | 2005-03-30 |
Family
ID=34144547
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB021306400A Expired - Fee Related CN1195130C (en) | 2002-09-10 | 2002-09-10 | Sand concrete free small pile foundation consolidation process by stone throwing and squeezing |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1195130C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355991C (en) * | 2005-04-18 | 2007-12-19 | 河海大学 | Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material |
| CN100501011C (en) * | 2007-12-31 | 2009-06-17 | 浙江省一建建设集团有限公司 | Hole drilling mudjack pile construction method |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100376750C (en) * | 2004-11-26 | 2008-03-26 | 王平 | Construction method of high-performance cement soil pile |
| CN102465524B (en) * | 2010-11-11 | 2016-05-25 | 上海市政工程设计研究总院 | Double radial mesh-cage sand-gravel pile and construction technology thereof |
| CN106638579A (en) * | 2016-10-17 | 2017-05-10 | 重庆大学 | Construction method of coral sand foundation expanding cement mortar injection pile |
| CN108343077A (en) * | 2018-04-23 | 2018-07-31 | 中铁二院昆明勘察设计研究院有限责任公司 | A kind of Miniature anti-slide pile composite structure and its construction method |
| CN109083143A (en) * | 2018-09-27 | 2018-12-25 | 上海勘察设计研究院(集团)有限公司 | A kind of preexisting hole burried pipe grouting aperture slurry seal construction method and constructing device |
| CN110106869A (en) * | 2019-04-23 | 2019-08-09 | 中铁四局集团第四工程有限公司 | A kind of construction method of neighbouring Business Line crushed stone grouting pile |
| CN111441358A (en) * | 2020-03-05 | 2020-07-24 | 南方电网科学研究院有限责任公司 | Deep well pressure grouting process |
| CN111410475B (en) * | 2020-03-23 | 2022-04-01 | 西华大学 | Pre-filled aggregate concrete, preparation method and steel tube concrete prepared from pre-filled aggregate concrete |
| CN112049102B (en) * | 2020-09-08 | 2021-06-15 | 广东省水利水电第三工程局有限公司 | Construction method for reinforcing complex stratum by grouting steel pipe pile |
-
2002
- 2002-09-10 CN CNB021306400A patent/CN1195130C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100355991C (en) * | 2005-04-18 | 2007-12-19 | 河海大学 | Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material |
| CN100501011C (en) * | 2007-12-31 | 2009-06-17 | 浙江省一建建设集团有限公司 | Hole drilling mudjack pile construction method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1482307A (en) | 2004-03-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN1193141C (en) | Combined grouting construction process of reinforcing foundation | |
| CN101736738B (en) | Production method of pressure resistance and pull-out resistance grouted gravel pile | |
| CN102011399B (en) | PHC pile-based multiple high jet pedestal pile construction method | |
| CN101812843B (en) | Centre grouted poured post-grouting pile construction methods, and grouter and grout injector used thereby | |
| CN101858077B (en) | Construction method of composite foundation with bagged compacting and slurry cementing small-diameter gravel pile | |
| CN1195130C (en) | Sand concrete free small pile foundation consolidation process by stone throwing and squeezing | |
| CN101634143A (en) | Method for treating spiral oil-extruding filling pile composite foundation in stratum containing soft clay | |
| CN103184734A (en) | Implanted and grouted compound pile and construction method | |
| KR100762991B1 (en) | Precast piling method injected with high-strength mortar | |
| CN111074883A (en) | Post-grouting permeable concrete pipe pile and construction method thereof | |
| CN106337413A (en) | Water-draining stiff geo-textile bag cement-soil composite pile and construction method thereof | |
| CN1067453C (en) | Foundation pit slope flat anchor spray net supporting method | |
| CN103741670A (en) | Negative skin friction (NSF) removing foundation treatment method | |
| CN206070508U (en) | Device for reinforcing foundation | |
| CN101899838A (en) | Bottom-grouting-enlarged small-diameter prestressed tubular pile composite foundation construction method | |
| KR101057487B1 (en) | Grouting Method Using Enlarged Concrete Consolidation Grouting Apparatus | |
| CN110685272A (en) | Method for treating soft foundation settlement overrun by utilizing inclined-hole cloth bag pile | |
| CN113445516A (en) | Drilling and pouring type cement soil pile and construction method thereof | |
| CN105421446B (en) | A kind of construction method of composite soil extruding solidification prefabricated pile for treatment of soft foundation | |
| CN100355991C (en) | Method for constructing composite foundation of piles and ground interactive slurry bonded dispersed body material | |
| CN106087957A (en) | Power distribution room cable duct anti-settling method is built on a kind of coastal sludge matter soil | |
| CN1461857A (en) | Construction method and its use | |
| CN1209489A (en) | Construction method for composite foundation by tamping expanding piles and compacting soil around piles | |
| CN102433882A (en) | Construction method for forming foundation pit support through combining concrete pile wall and jet grouting anchor piles and anchor bar structural piece | |
| CN112267457A (en) | Water guide grouting pile reinforcement treatment method for overlying miscellaneous filling silt foundation |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Application publication date: 20040317 Assignee: Zhengzhou University Multi-Functional Design and Research Academy Co., Ltd. Assignor: Zhou Tonghe Contract record no.: 2013410000079 Denomination of invention: Sand concrete free small pile foundation consolidation process by stone throwing and squeezing Granted publication date: 20050330 License type: Exclusive License Record date: 20130910 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20050330 Termination date: 20200910 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |