CN205171506U - Bored concrete pile in karst area suitable for connectivity passageway has - Google Patents

Bored concrete pile in karst area suitable for connectivity passageway has Download PDF

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Publication number
CN205171506U
CN205171506U CN201520986959.7U CN201520986959U CN205171506U CN 205171506 U CN205171506 U CN 205171506U CN 201520986959 U CN201520986959 U CN 201520986959U CN 205171506 U CN205171506 U CN 205171506U
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CN
China
Prior art keywords
pile
karst area
connectivity
passageway
connectivity path
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Expired - Fee Related
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CN201520986959.7U
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Chinese (zh)
Inventor
梅国雄
赵艳林
姚锐丹
李勇义
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Guangxi University
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Guangxi University
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Priority to CN201520986959.7U priority Critical patent/CN205171506U/en
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Publication of CN205171506U publication Critical patent/CN205171506U/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Abstract

The utility model discloses a bored concrete pile in karst area suitable for connectivity passageway has, the bored concrete pile is applicable to the karst area that has the connectivity passageway, the bored concrete pile includes: the pile body, it is located in the karst area that has the connectivity passageway, and the cladding piece, its cladding in the pile body becomes outside the steel reinforcement cage before the stake, the diameter of cladding piece is greater than the pile body becomes the diameter of the steel reinforcement cage before the stake, the length of cladding piece is greater than the pile body becomes the height of the preceding steel reinforcement cage of stake, when the concrete roof tile is used, the cladding piece to extend in the connectivity passageway in the karst area, to it has concrete mud to fill in the cladding piece that the connectivity passageway extends. The utility model discloses a bored concrete pile, the holistic combination of rock with in the connectivity karst area that makes that it can be better is in the same place, bears jointly to the stake side friction resistance who improves the pile foundation can be shown, thereby the whole bearing capacity of ground is being improved.

Description

A kind of castinplace pile being applicable to the karst area with connectivity path
Technical field
The utility model relates to building field, particularly a kind of castinplace pile being applicable to the karst area with connectivity path.
Background technology
Karst is that water carries out solublerocks such as carbonate rock, gypsum, rock salt based on chemical corrosion, and flowing water erosion, the mechanisms such as erosion and avalanche of diving are auxiliary geologic process, and act on the general name of the phenomenon produced by these.The karst area of China mainly concentrates on southwest, and the karst area area of southwest accounts for more than 1/3rd of whole southwest area, and the geological condition complex of karst area.When carrying out infrastructure design, construction in karst area, designing requirement is high, constructional difficulties is large, the cycle is long, easy generation construction accident, cause design, construction cost increases greatly, under the Major Strategic behave of national Implementation of Western Development, construction of the West Region is just in construction like a raging fire, and how designing in karst area, building the Foundation Design meeting building or the requirement of structure bearing capacity of foundation soil is the difficult problem that pendulum needs solution together badly in face of design, constructor.
For the engineering geological conditions of this complexity of karst area, what Foundation Design form conventional at present adopted is pile foundation, and the common type of pile foundation is the general stake of excavated by manual work fill orifice, Model analysis etc.
Construction of manual-excavation cast-in-place pile technique is relatively simple, technical requirements is not high, construction cost is cheap, hole quality can also be checked, the quality of easy guarantee concreting, but hand excavated pile has certain limitation, just be useful in long about 6m to the 20m of stake, and it is higher to security requirement, as pernicious gas, inflammable gas, rarefaction of air etc., when in solution cavity, groundwater table is higher, also need to take out while dig and also have particular/special requirement to earth leakage protective, and run into and have compared with during when connectivity karst area or to the Foundation Design that requirement for bearing capacity is higher, the long requirement sometimes not reaching design of stake of manually digging hole.
Model analysis uses big machinery boring, short construction period, speed is fast, technical maturity, process is reliably comparatively safe, the stake of the method construction is long reaches more than 20m, but owing to belonging to disguised engineering, quality specifications is difficult to control, but a lot of solution cavity of the Area distribution due to karst area, and skewness, not of uniform size, but also there is connectedness, in the mortar depositing construction process of reality, if construction wrong, easily there is spillage, step on hole, undergauge, the phenomenons such as stake holes deflection, if and run into the karst area of geological condition complexity, conventional that pile foundation cannot meet the requirement of bearing capacity, the effect of pile foundation cannot be played.
The information being disclosed in this background technology part is only intended to increase the understanding to general background of the present utility model, and should not be regarded as admitting or imply in any form that this information structure has been prior art that persons skilled in the art are known.
Utility model content
The purpose of this utility model is to provide a kind of castinplace pile being applicable to have the karst area of connectivity path, thus avoid the castinplace pile of the karst area with connectivity path that the phenomenon such as spillage, undergauge easily occurs, effectively can also ensure the pile quality of castinplace pile, improve stake simultaneously and there is the globality of connectivity path karst, significantly improving the bearing capacity of stake.
For achieving the above object, the utility model provides a kind of castinplace pile being applicable to have the karst area of connectivity path, and described castinplace pile is applicable to the karst area with connectivity path; Described castinplace pile comprises: pile body, and it is located at has in the karst area of connectivity path; And coating member, it is coated on outside the reinforcing cage before described pile body pile, and the diameter of described coating member is greater than the diameter of the reinforcing cage before described pile body pile, and the length of described coating member is greater than the height of reinforcing cage before described pile body pile; In a state of use, described coating member extends in the connectivity path in described karst area, in the coating member that described connectivity path extends, be filled with concrete mud.
Preferably, in technique scheme, described coating member is the open-topped composite earthwork cloth of bottom closure.Composite earthwork cloth has the physical and mechanical property indexs such as good tension, tear-proof, puncture resistance, also has higher intensity, good extension property, and has larger modulus of deformation.Also there is the feature such as good acid and alkali-resistance, anticorrosive, ageing-resistant, good permeability simultaneously.The composite earthwork cloth adopting this material to make can be good at playing its flexible effect.
Preferably, in technique scheme, the diameter 1m more than larger than the reinforcing cage diameter before described pile body pile of described coating member, the length of described coating member is than height more than the height 2m of the reinforcing cage before described pile body pile, and size can adjust according to concrete condition.
A piling method for castinplace pile, comprises the following steps:
(1) first open-topped for bottom closure composite earthwork cloth is enclosed within outside reinforcing cage;
(2) then hang in the position of pre-aligned pile the reinforcing cage being coated with the open-topped composite earthwork cloth of bottom closure, there is to pumping in reinforcing cage the concrete of certain setting time again, then inject high-pressure slurry, by high-pressure slurry, the concrete mud that compound building cloth wraps up is filled in the passage blocking up and have connective karst area.
Compared with prior art, the utility model has following beneficial effect:
(1) castinplace pile of the present utility model utilizes the flexibility of composite earthwork cloth, when composite earthwork cloth middle-high pressure grouting open-topped to bottom closure, composite earthwork cloth can stick out, extrude in the karst with connectivity path simultaneously, the connectivity path of blocking up in karst can be filled, can also be filled in the gap of karst simultaneously, enable combining of the better rock entirety with having in the karst area of connectivity path of steel concrete, common carrying, and the pile side friction of pile foundation can be significantly improved, thus improve the total bearing capacity of ground.Relative to the castinplace pile that existing karst area uses, greatly improve pile quality, and increase substantially castinplace pile and the globality with the rock in the karst area of connectivity path, pile foundation is guaranteed in the safety of karst area.
(2) castinplace pile of the present utility model can the effective disease such as mortar leakage prevention, necking down, can be good at improving pile quality, improves stake simultaneously and has the globality of the rock in the karst area of connectivity path, significantly improve the bearing capacity of stake.Castinplace pile of the present utility model can also adapt to the karst area with connectivity path being difficult to verify completely engineering geological condition, also fully can improve the globality of stake and rock, ensure that the requirement for bearing capacity of Foundation Design.
(3) construction method of the utility model castinplace pile is simple, and construction sequence is less, and workman can be made more easily to construct, and ensures the requirement of construction quality and bearing capacity, can also save engineering time and construction costs, improve efficiency of construction.
Accompanying drawing explanation
Fig. 1 is according to the geological condition schematic diagram being applicable to have the karst area of connectivity path of the present utility model.
Fig. 2 is according to the pore-forming schematic diagram being applicable to have the karst area of connectivity path of the present utility model.
Fig. 3 be according to the described pile body pile being applicable to have the karst area of connectivity path of the present utility model before reinforcing cage schematic diagram.
Fig. 4 is according to the castinplace pile schematic diagram being applicable to have the karst area of connectivity path of the present utility model.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail, but is to be understood that protection domain of the present utility model not by the restriction of detailed description of the invention.
Clearly represent unless otherwise other, otherwise in whole manual and claims, term " comprise " or its conversion as " comprising " or " including " etc. by be understood to include the element of stating or ingredient, and do not get rid of other element or other ingredient.
As shown in Figures 1 to 4, according to a kind of castinplace pile being applicable to the karst area with connectivity path of the utility model detailed description of the invention, described castinplace pile is applicable to the karst area with connectivity path, described in have in the rock 1 of the karst area of connectivity path and have connectivity path 2 and solution cavity 3.Described castinplace pile comprises: pile body 4 is reinforced concrete pile, and is located in the stake holes 8 offered connective karst area 1.Coating member, this coating member is the open-topped composite earthwork cloth 5 of bottom closure, the open-topped geotextiles of bottom closure 5 is coated on outside the reinforcing cage 7 before described pile body pile, the diameter of described coating member is greater than the diameter of the reinforcing cage 7 before described pile body pile, and the length of described coating member is greater than the height of the reinforcing cage 7 before described pile body pile.The diameter 1m more than larger than reinforcing cage 7 diameter before described pile body pile of described coating member, the length 2m more than longer than the height of the reinforcing cage 7 before described pile body pile of described coating member.In a state of use, composite earthwork cloth 5 fills in the connectivity path 2 of blocking up in described connective karst area under the effect of high-pressure slurry, and filling in the coating member that described connectivity path extends stifledly has concrete mud 6.
Castinplace pile of the present utility model utilizes the flexibility of composite earthwork cloth, when composite earthwork cloth 5 middle-high pressure grouting open-topped to bottom closure, composite earthwork cloth 5 can stick out, extrude in the karst with connectivity path simultaneously, the connectivity path of blocking up in karst can be filled, can also be filled in the gap of karst simultaneously, enable combining of the rock entirety in the better and connective karst area of steel concrete, common carrying, and the pile side friction of pile foundation can be significantly improved, thus improve the total bearing capacity of ground.Relative to the castinplace pile that existing karst area uses, greatly improve pile quality, and increase substantially castinplace pile and the globality with the rock in the karst area of connectivity path, pile foundation is guaranteed in the safety of karst area.Castinplace pile of the present utility model can also the effective disease such as mortar leakage prevention, necking down, can be good at improving pile quality, improves stake simultaneously and has the globality of the rock in connectivity path karst area, significantly improve the bearing capacity of stake.Castinplace pile of the present utility model can also adapt to the karst area with connectivity path being difficult to verify completely engineering geological condition, also fully can improve the globality of stake and rock, ensure that the requirement for bearing capacity of Foundation Design.
A piling method for castinplace pile, comprises the following steps:
(1) first open-topped for bottom closure composite earthwork cloth is enclosed within outside reinforcing cage;
(2) then hang in the position of pre-aligned pile the reinforcing cage being coated with the open-topped composite earthwork cloth of bottom closure, there is to pumping in reinforcing cage the concrete of certain setting time again, then inject water under high pressure mud, by high-pressure slurry, the concrete mud that compound building cloth wraps up is filled in the passage blocking up and have connective karst area.
The piling method of the utility model castinplace pile is simple, and construction sequence is less, and workman can be made more easily to construct, and ensures the requirement of construction quality and bearing capacity, can also save engineering time and construction costs, improve efficiency of construction.
The aforementioned description to concrete exemplary of the present utility model is to illustrate and the object of illustration.These descriptions not want the utility model to be defined as disclosed precise forms, and obviously, according to above-mentioned instruction, can much change and change.The object selected exemplary embodiment and describe is to explain certain principles of the present utility model and practical application thereof, thus those skilled in the art can be realized and utilize various different exemplary of the present utility model and various different selection and change.Scope of the present utility model is intended to limited by claims and equivalents thereof.

Claims (3)

1. be applicable to a castinplace pile for the karst area with connectivity path, it is characterized in that, described castinplace pile is applicable to the karst area with connectivity path, and described castinplace pile comprises:
Pile body, it is located at has in the karst area of connectivity path; And
Coating member, it is coated on outside the reinforcing cage before described pile body pile, and the diameter of described coating member is greater than the diameter of the reinforcing cage before described pile body pile, and the length of described coating member is greater than the height of the reinforcing cage before described pile body pile; In a state of use, described coating member extends in the connectivity path in described karst area, in the coating member that described connectivity path extends, be filled with concrete mud.
2. the castinplace pile being applicable to the karst area with connectivity path according to claim 1, is characterized in that, described coating member is the open-topped composite earthwork cloth of bottom closure.
3. the castinplace pile being applicable to the karst area with connectivity path according to claim 1, it is characterized in that, the diameter 1m more than larger than the diameter of the reinforcing cage before described pile body pile of described coating member, the length of described coating member is than height more than the height 2m of the reinforcing cage before described pile body pile.
CN201520986959.7U 2015-12-02 2015-12-02 Bored concrete pile in karst area suitable for connectivity passageway has Expired - Fee Related CN205171506U (en)

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Application Number Priority Date Filing Date Title
CN201520986959.7U CN205171506U (en) 2015-12-02 2015-12-02 Bored concrete pile in karst area suitable for connectivity passageway has

Publications (1)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544508A (en) * 2015-12-02 2016-05-04 广西大学 Cast-in-place pile applicable to karst region having communicating channels

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105544508A (en) * 2015-12-02 2016-05-04 广西大学 Cast-in-place pile applicable to karst region having communicating channels

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CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20160420

Termination date: 20191202

CF01 Termination of patent right due to non-payment of annual fee