CN207047834U - A kind of construction system of hollow preformed pile - Google Patents
A kind of construction system of hollow preformed pile Download PDFInfo
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- CN207047834U CN207047834U CN201720998133.1U CN201720998133U CN207047834U CN 207047834 U CN207047834 U CN 207047834U CN 201720998133 U CN201720998133 U CN 201720998133U CN 207047834 U CN207047834 U CN 207047834U
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- pile
- push rod
- prefabricated
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- pile body
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Abstract
The utility model provides a kind of construction system of hollow preformed pile, including humping section, and humping section includes pile top, wall set of screening, the prefabricated pile pile body of cavity structure and the push rod that is arranged in prefabricated pile pile body cavity from the bottom to top.It is mutually coupled respectively between two adjacent groups prefabricated pile pile body between two adjacent groups push rod；It is connected or is in contact with pile top positioned at the lower end of the push rod of bottom；Wall of screening set is open column shape body structure, and its lower end is connected with pile top, and its upper end parcel can move up and down positioned at the lower end of the prefabricated pile pile body of bottom, prefabricated pile in wall set of screening；The push rod of the top and the upper end of prefabricated pile pile body are acted on by heavy pressure.Pile top and pile cutoff can separately be sunk during construction of prefabricated piles using construction system of the present utility model, realize end resistance and side friction efficiently separating over time and space, the larger diameter that can be constructed under same sinking apparatus and (or) deeper prefabricated pile.
Description
Technical field
Hollow preformed pile construction field is the utility model is related to, more particularly to a kind of construction system of hollow preformed pile.
Background technology
With the development of national economy and the base such as the raising of living standards of the people, skyscraper, high-speed railway, highway bridge
Infrastructure construction demand is continuously increased, and pile foundation is because of its high capacity and deforms the advantages of small, turns into all kinds of buildings and constructs
The commonly used foundation structure form of thing.
Pile installation mainly divides prefabricated pile and bored concrete pile by construction method, and the pile sinking process of existing prefabricated pile substantially divides
For：Hammering method, vibratory drilling method, static pressure method, middle pick method.
Hammering method is by diesel combustion or hydraulic-driven, and hammer body is carried to certain altitude freely falling body, impacts stake top, is utilized
The impact energy of hammering overcomes soil stake is sink to the pile sinking construction method of desired depth or supporting course stake resistance；Vibratory drilling method is
Using a high-power electric vibrator (vibration hammer), during pile sinking, vibration hammer is arranged in stake top, using its dither,
Pile body is vibrated with high acceleration, makes the soil structures around stake because vibration changes, intensity decreases, so as to reduce a side and soil
The frictional resistance of body, makes stake sink in soil；Static pressure pile method is implemented by the pile compacting equipment of static pile press, is conducted oneself with dignity with pile press machine
Counter-force is provided with the counterweight in frame, to overcome the soil-entering resistance during piling, prefabricated pile merogenesis is pressed into desired depth
Pile sinking construction method.
But three of the above method is complete soil compaction in pile driving process, to overcome the soil body to rub the side of pile foundation and hinder
The collective effect of power and end resistance, penetrating resistance is big, it is difficult to the construction for prefabricated pile of completing to grow up, and during piling
Easily there is broken pile.
Middle pick method is a kind of in stake hollow bulb insertion target drill, the method for pile sinking in boring extracting soil.This method is being bored
When head closes on supporting course, open to expand by fuel tap and bore the wing, bottom grouting stirring is carried out after certain depth is crept into supporting course,
Mixed and stirred with the soil (sand) of supporting course and form the napiform root of expansion, and stake is inserted in napiform root and forms bellend, held with improving single pile
Carry power.
This method pile driving process is complex, and scene needs to include piling machine, slip casting backstage, air compressor machine, crawler crane, digging machine
Etc. multinomial full-blown equipment, applied for the region of the intensive down town of narrow field, surrounding building or place out-of-flatness
Work difficulty is larger.The foundation pile of this method construction is non-Squeezing Soil Pile, and rotary drill, which fetches earth, causes Pile side soil body to unload and disturb, and causes pile
Stake lateral pressure and pile side resistance afterwards is greatly attenuated, and the bearing capacity of stake is difficult to ensure that.
Therefore, it is necessary to improve the construction system of hollow preformed pile so that the prefabricated pile constructed using the construction system
Bearing capacity, reliable in quality, while efficiency of construction is high, adapts to the construction of the prefabricated pile in various length and diameter, has weight
Want meaning and broad prospect of application.
Utility model content
The utility model purpose is to provide a kind of construction system of hollow preformed pile, carried out using the construction system hollow
The construction of prefabricated pile, to overcome the shortcomings of several pile sinking process of prior art, and existing sinking apparatus is utilized, complete that there is height
The construction for the hollow preformed pile that bearing capacity is grown up.
To achieve the above object, the utility model provides a kind of construction system of hollow preformed pile, including humping section；
The humping section includes the pile top, screening arm protective sleeve and connection member set from the bottom to top, the connection member
Single-piece is connected including N groups setting up and down, N is the natural number more than or equal to 2；
The connection single-piece includes being realized the prefabricated pile pile body and push rod of sedimentation by heavy pressure, the heavy pressure effect
The upper end of the push rod and the prefabricated pile pile body in the connection single-piece of the top；The prefabricated pile pile body is middle part
Structure provided with cavity, interconnect between prefabricated pile pile body described in two groups be disposed adjacent；In the same connection single-piece
The push rod is set through the cavity of the corresponding prefabricated pile pile body；Institute in the connection single-piece of bottom
The lower end for stating push rod is connected or is in contact with the pile top, and the lower end and i-th -1 of the push rod in single-piece is connected described in i-th group
The upper end connection of the push rod in the group connection single-piece, i are the natural number for being less than or equal to N more than or equal to 2；
The wall set of screening is open column shape body structure, and its lower end is connected with the pile top, and its upper end parcel is positioned at most lower
The lower end of the prefabricated pile pile body in the connection single-piece at end, the prefabricated pile pile body can be carried out in the wall set of screening
Move up and down.
Especially, the pile top is inverted pyramidal structure；The push rod in the connection single-piece of bottom
Lower end and the pile top upper end end detachable connection.Push rod sectional extraction recovery after construction terminates.
Especially, the inside dimension for screening wall set is not more than the upper surface external dimensions of the pile top；It is described to screen
The height of wall set is 1-2 times of the stake footpath of the prefabricated pile, and the inside dimension for screening wall set is more than the prefabricated pile pile body
External dimensions 0.01-1cm.Hide arm protective sleeve can not it is long can not be too short, it is long, do not reach the optimum efficiency of construction；It is too short
The length then constructed every time is too small, too time-consuming.
Especially, at least four positioning banks, the positioning bank are provided with the cavity inner wall of described prefabricated pile pile body one end
Circumferentially disposed along the cavity inner wall, the positioning bank is used for the spacing and fixed push rod, prevents the push rod described pre-
Off normal and unstability in the cavity of stake pile body processed.
Especially, the thickness of the positioning bank is 5mm-10mm, and the height of the positioning bank is not less than 30mm, the positioning
The region that bank is circumferentially surrounded along the cavity inner wall is in up big and down small horn-like so that the push rod can accurately be pushed into described
Region is fixed and spacing.Positioning bank can not be too thick, if too thick, can influence the size of push rod so that the stabilization of push rod itself
Property and rigidity be unsatisfactory for construction requirement；Positioning bank can not be too low, the too low positioning that can be influenceed to push rod and the work for maintaining stabilization
With.
Especially, the push rod both ends are respectively arranged with the first nipple and the second nipple, two be disposed adjacent
The group push rod passes through first nipple and the matching connection of the second nipple.Be connected through a screw thread, be easy to construction and
Dismounting, save the time.
Especially, connected between prefabricated pile pile body described in two groups be disposed adjacent using ring flange.Connected using ring flange,
Prefabricated pile pile body structure is firm and easy construction.
Using the technical solution of the utility model, have the advantages that：
1st, construction system of the present utility model can guarantee that pile top in sinking watching using the cooperation for positioning bank and push rod
Perpendicularity.
2nd, the utility model using push rod and hides arm protective sleeve cooperation, pushing-type pile sinking in progress, each pile foundation submergence depth
Necessarily, before construction can according to needed for calculating designing pile length the length of hollow preformed pile pile body and tube coupling quantity, can effectively ensure that
Stake sinks down into designed elevation.
3rd, due to prefabricated pile pile body in work progress simultaneously by pile top and the resistance of stake side, it is total when stake side and pile top
Resistance reaches certain value, is also difficult to squeeze into stake globality with the peak power of sinking apparatus, and is applied using of the present utility model
Pile top and pile cutoff can separately be sunk in pile driving process, be successfully realized end resistance and stake side skin friction by work system
Efficiently separate over time and space, larger diameter and/or deeper can be sunk under same sinking apparatus rated power
Prefabricated pile, solves conventional sinking apparatus and method can not construct the difficulty of prefabricated pile of growing up.
Prior art mainly varies widely in structure, and pile top such as is made into spiral saw dentation carries out rotary brill soil
Construction either hollow shoveling, construction technology is complex, and the method for prior art or structure are all that need to overcome an end simultaneously
Resistance and pile side resistance.
4th, need not be fetched earth in pile driving process drilling using construction system of the present utility model, no mud overflows, construction
Method environmental protection.
5th, the load of pile side resistance decay, the stake of middle pick method institute pile is overcome using construction system of the present utility model
The shortcomings that being difficult to ensure that, the bearing capacity of the bearing capacity of institute's pile and traditional construction of prefabricated piles method institute pile is basically identical, and
Cost is relatively low, efficiency of construction is high, environmentally friendly, has good economic results in society.
In addition to objects, features and advantages described above, the utility model also has other purposes, feature and excellent
Point.Below with reference to figure, the utility model is described in further detail.
Brief description of the drawings
The accompanying drawing for forming the part of the application is used for providing further understanding to of the present utility model, of the present utility model
Schematic description and description is used to explain the utility model, does not form to improper restriction of the present utility model.
In the accompanying drawings：
Fig. 1 is the construction system schematic diagram of the hollow preformed pile of embodiment 1 and embodiment 2；
Fig. 2 is the structure of push rod and connection exploded perspective view in embodiment 1 and embodiment 2；
Fig. 3 is Fig. 1 1-1 profiles；
Reference：
1st, cavity, 2, prefabricated pile pile body, 3, push rod, 4, positioning bank, 5, hide arm protective sleeve, 6, pile top, the 7, first nipple,
8th, the second nipple, 9, heavy pressure equipment.
Embodiment
Embodiment of the present utility model is described in detail below in conjunction with accompanying drawing, but the utility model can be according to power
Profit requires to limit and the multitude of different ways of covering is implemented.
Embodiment 1
Refer to Fig. 1-Fig. 3, a kind of construction system of hollow preformed pile, including humping section and heavy laminate section；The heavy pressure
Part includes being used to provide down the heavy pressure equipment 9 of pressure (when needs construct longer prefabricated pile, heavy for the humping section
Connector is additionally provided between pressure equipment and prefabricated pile pile body and push rod, for protecting pile body not to be damaged)；The humping section
Including the pile top 6, screening arm protective sleeve 5 and connection member set from the bottom to top, the connection member includes N groups setting up and down
Connect single-piece, N be more than or equal to natural number.
The connection single-piece includes being realized the prefabricated pile pile body 2 and push rod of sedimentation by the heavy pressure that heavy laminate section provides
3, the prefabricated pile pile body is the structure that middle part is provided with cavity 1, and method is used between prefabricated pile pile body described in two groups be disposed adjacent
Blue disk interconnects.
The push rod in the same connection single-piece is set through the cavity of the corresponding prefabricated pile pile body；Institute
State push rod both ends and be respectively arranged with the first nipple 7 and the second nipple 8, pushed away described in connection single-piece described in i-th group
The upper end of the push rod of the lower end of bar with being connected described in the i-th -1 group in single-piece passes through first nipple and described second
Nipple connects, and i is the natural number for being less than or equal to N more than or equal to 2, is pushed away described in the connection single-piece of the top
The upper end of bar and the prefabricated pile pile body is connected with providing the sinking apparatus of heavy pressure.
The pile top is inverted pyramidal structure；The lower end of the push rod in the connection single-piece of bottom with
The upper end end detachable connection of the pile top or contact.
The wall set of screening is set for open column shape body structure, and its lower end is connected with the pile top, the interior of wall set of screening
Portion's size is not more than the upper surface external dimensions of the pile top；The height that the wall of screening covers is the 1- in the stake footpath of the prefabricated pile
2 times, the lower end of the prefabricated pile pile body of its upper end parcel in the connection single-piece of bottom, and the wall set of screening
Inside dimension be more than the prefabricated pile pile body external dimensions 0.01-1cm so that the prefabricated pile pile body can screen described
Moved up and down in wall set.
The positioning bank 4 of four is provided with the cavity inner wall of described prefabricated pile pile body one end, the bank that positions is along the sky
Cavity wall is circumferentially disposed, and the thickness of the positioning bank is 5mm-10mm, and the height of the positioning bank is not less than 30mm, the positioning
The region that bank is circumferentially surrounded along the cavity inner wall is in up big and down small horn-like so that the push rod can accurately be pushed into described
Region is fixed and spacing, prevents the push rod off normal and unstability in the cavity of the prefabricated pile pile body.
The method constructed with the construction system of above-mentioned hollow preformed pile, comprises the following steps：
Step 1: stake position repetition measurement, is positioned using total powerstation to the center point coordinate of pile sinking position.
Step 2: sinking apparatus moves to pile sinking position；By with the pile top of wall set and the prefabricated pile pile body of bottom of screening
Socket, then push rod is inserted in the cavity of bottom prefabricated pile pile body, and the centre of four positioning banks is held in, positioning bank can have
Effect ground limitation push rod off normal and raising flexing are stable；Correcting the perpendicularity of prefabricated pile pile body, it is ensured that prefabricated pile pile body vertically buries,
Then using sinking apparatus by one group of prefabricated pile pile body, the push rod set and pile top press-in soil.
Step 3: by the second section prefabricated pile pile body and push rod bottom surface respectively with the bottom prefabricated pile pile body that has buried and pushing away
Bar top surface is respectively adopted ring flange and connected with nipple, then using sinking apparatus by second section and bottom prefabricated pile stake
Body, push rod and pile top are sunk in soil together.
Step 4: repeat step three, until sinking apparatus reaches maximum sinking power.Because prefabricated pile pile body is being constructed
During simultaneously by pile top and the resistance of stake side, i.e., when the drag overall of stake side and pile top reaches certain value, with sinking apparatus
When peak power is also difficult to squeeze into stake globality.
Step 5: first being sunk to pile top in soil separately through push rod using sinking apparatus, single sinks to stroke of push rod etc.
In the clear height for wall set of screening；Individually prefabricated pile pile body is sunk in soil again, the stroke of the prefabricated pile pile body is equal to the push rod
Stroke；After the bottom of hollowcore precast pile tube pile body contacts with pile top top surface stop push, guarantee screen wall set with it is hollow pre-
Stake pile body processed does not separate.
In step 5, pile top of first sinking, now only need to overcome end-resistance；Sink pile body again, now only needs to overcome
Pile side resistance, therefore the step is effective must separate pile top and pile side resistance so that sinking apparatus can squeeze into it is bigger or
Longer stake.
Step 6: repeat step five and ensure described in screen wall set with first segment described in prefabricated pile pile body end face regardless of
From until the bottom of the pile top reaches projected depth, merogenesis extraction push rod and disassembly ＆ recycling complete the construction of pile sinking.
Embodiment 2
The construction system of prefabricated pile is same as Example 1 in the present embodiment, the construction method and embodiment 1 of the present embodiment
Difference is not use step 3 and step 4, when being constructed most directly using step 5 carry out pile sinking up to
The bottom of pile top reaches projected depth.
Preferred embodiment of the present utility model is the foregoing is only, is not limited to the utility model, for this
For the technical staff in field, the utility model can have various modifications and variations.It is all in the spirit and principles of the utility model
Within, any modification, equivalent substitution and improvements made etc., it should be included within the scope of protection of the utility model.
Claims (7)
1. a kind of construction system of hollow preformed pile, it is characterised in that including humping section；
Pile top, screening arm protective sleeve and connection member, the connection member that the humping section includes setting from the bottom to top include
N groups connection single-piece setting up and down, N is the natural number more than or equal to 2；
The connection single-piece includes being realized the prefabricated pile pile body and push rod of sedimentation by heavy pressure, and the heavy pressure acts on most
The upper end of the push rod and the prefabricated pile pile body in the connection single-piece of upper end；The prefabricated pile pile body is provided with for middle part
The structure of cavity, interconnect between prefabricated pile pile body described in two groups be disposed adjacent；It is described in the same connection single-piece
Push rod is set through the cavity of the corresponding prefabricated pile pile body；Pushed away described in the connection single-piece of bottom
The lower end of bar is connected or is in contact with the pile top, the lower end of the push rod in connection single-piece described in i-th group and the i-th -1 group institute
The upper end connection of the push rod in connection single-piece is stated, i is the natural number for being less than or equal to N more than or equal to 2；
The wall set of screening is open column shape body structure, and its lower end is connected with the pile top, and its upper end parcel is positioned at bottom
The lower end of the prefabricated pile pile body in the connection single-piece, the prefabricated pile pile body can be carried out up and down in the wall set of screening
It is mobile.
2. the construction system of a kind of hollow preformed pile according to claim 1, it is characterised in that the pile top is inverted
Pyramidal structure；The lower end and the upper end end of the pile top of the push rod in the connection single-piece of bottom are detachable
Formula connects.
A kind of 3. construction system of hollow preformed pile according to claim 1, it is characterised in that the interior of wall set of screening
Portion's size is not more than the upper surface external dimensions of the pile top；The height that the wall of screening covers is the 1- in the stake footpath of the prefabricated pile
2 times, the inside dimension for screening wall set is more than the external dimensions 0.01-1cm of the prefabricated pile pile body.
4. the construction system of a kind of hollow preformed pile according to claim 1-3 any one, it is characterised in that described pre-
At least four positioning banks are provided with the cavity inner wall of stake pile body one end processed, the positioning bank is circumferentially set along the cavity inner wall
Put, the positioning bank is used for the spacing and fixed push rod, prevents push rod off normal in the cavity of the prefabricated pile pile body
And unstability.
A kind of 5. construction system of hollow preformed pile according to claim 4, it is characterised in that the thickness of the positioning bank
For 5mm-10mm, the height of the positioning bank is not less than 30mm, the region that the positioning bank circumferentially surrounds along the cavity inner wall
In up big and down small horn-like so that the push rod can accurately be pushed into the region and fix and spacing.
A kind of 6. construction system of hollow preformed pile according to claim 4, it is characterised in that the push rod both ends difference
Be provided with the first nipple and the second nipple, push rod described in two be disposed adjacent group by first nipple and
The matching connection of second nipple.
A kind of 7. construction system of hollow preformed pile according to claim 4, it is characterised in that two groups of institutes being disposed adjacent
State and connected using ring flange between prefabricated pile pile body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998133.1U CN207047834U (en) | 2017-08-10 | 2017-08-10 | A kind of construction system of hollow preformed pile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720998133.1U CN207047834U (en) | 2017-08-10 | 2017-08-10 | A kind of construction system of hollow preformed pile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207047834U true CN207047834U (en) | 2018-02-27 |
Family
ID=61499572
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720998133.1U Expired - Fee Related CN207047834U (en) | 2017-08-10 | 2017-08-10 | A kind of construction system of hollow preformed pile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207047834U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268604A (en) * | 2017-08-10 | 2017-10-20 | 中南大学 | The construction system and construction method of a kind of hollow preformed pile |
| CN112252311A (en) * | 2020-10-12 | 2021-01-22 | 山东鼎鲁建筑有限公司 | Small-size precast pile stake soil composite foundation weak soil slope protection stake |
-
2017
- 2017-08-10 CN CN201720998133.1U patent/CN207047834U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107268604A (en) * | 2017-08-10 | 2017-10-20 | 中南大学 | The construction system and construction method of a kind of hollow preformed pile |
| CN107268604B (en) * | 2017-08-10 | 2022-08-19 | 中南大学 | Construction system and construction method of hollow precast pile |
| CN112252311A (en) * | 2020-10-12 | 2021-01-22 | 山东鼎鲁建筑有限公司 | Small-size precast pile stake soil composite foundation weak soil slope protection stake |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180227 Termination date: 20190810 |