CN209025070U - A kind of long prefabricated tubular pile of major diameter that classification promotes - Google Patents
A kind of long prefabricated tubular pile of major diameter that classification promotes Download PDFInfo
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- CN209025070U CN209025070U CN201821759096.XU CN201821759096U CN209025070U CN 209025070 U CN209025070 U CN 209025070U CN 201821759096 U CN201821759096 U CN 201821759096U CN 209025070 U CN209025070 U CN 209025070U
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- prefabricated tubular
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- 238000010276 construction Methods 0.000 claims abstract description 25
- 238000005266 casting Methods 0.000 claims abstract description 5
- 230000008859 change Effects 0.000 claims description 3
- 239000002689 soil Substances 0.000 abstract description 10
- 238000003780 insertion Methods 0.000 abstract description 3
- 230000037431 insertion Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 21
- 230000000694 effects Effects 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 238000005553 drilling Methods 0.000 description 3
- 238000002513 implantation Methods 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 230000000994 depressogenic effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000011440 grout Substances 0.000 description 1
- 239000007943 implant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
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Abstract
The utility model provides a kind of long prefabricated tubular pile of major diameter that classification promotes, including pile body and pile top setting up and down, the pile body includes the hollow pile body of more piece equal length, sleeve is set between pile top and pile body and adjacent pile body, the lower end of the sleeve is fixedly connected and is respectively saved in the movable insertion sleeve in lower end of pile body, and supporting point of the internal cavities platform as sinking thrust is arranged between adjacent pile body；Pile top and each section pile body are successively sunk in soil, it realizes the classification of prefabricated tubular pile is promoted using push rod and the shoulder that push rod lower end is arranged in, reach after predetermined depth in the cavity of prefabricated tubular pile casting concrete to complete the embedded work of entire prefabricated tubular pile.The utility model separates the end resistance that pile top is born with the pile side resistance that pile body is born, the larger pile side resistance that also entire pile body is born is divided into the lesser pile side resistance of multistage, limitation of the existing equipment in terms of prefabricated tubular pile construction depth is efficiently solved, to realize maximally utilizing for equipment.
Description
Technical field
The utility model relates to prefabricated tubular pile technical field of construction, and in particular, to a kind of major diameter that classification promotes is long
Prefabricated tubular pile.
Background technique
Now with the development of society, more and more fields need to construct using pile foundation, are such as used as earth-retaining branch
Protection structure；As the ruggedized construction in the liquable soil layer in earthquake resistance and prevention area；As high-story house, high-rise structures and big ton
The indispensable structure of the heavy single-storey factory building of position heavy duty crane；The building larger or more important as load on soft foundation
The foundation structure of object.Be using the advantages of pile foundation: bearing capacity is higher, stability is good, biggish horizontal loading can be born and
It is more uniform with lesser settling amount, bulk settling.
Existing pile foundation can be divided into prefabricated pile and bored concrete pile according to pile making method, wherein the existing pile of prefabricated pile
Method mainly includes static pressure method, hammering method, implantation, middle pick method and vibratory drilling method.Static pressure method is the weight using Static pressure pile driver itself
Prefabricated pile is pressed into underground by power effect, and noiseless generates during entire piling, but the equipment needed is more heavy, is not easy to move
It is dynamic；Hammering method mainly carries out hammering repeatedly to stake top to prefabricated pile be sunk to, piling efficiency using diesel hammer or hydraulic hammer
Height, but vibration is obvious in the construction process, noise is larger, while meeting disturbed strata is to influence environment；Implantation is answered in foreign countries
With more, drill in the earth formation the simultaneously grout injection in hole by drilling machine, it finally again will be in whole implant holes of prefabricated pile；Vibration
Dynamic method reduces the resistance between stake soil by the continuous vibration of vibration hammer, finally reaches the mesh of pile sinking under gravity
's.
However as the increase of skyscraper, static pressure method, hammering method, implantation and vibratory drilling method are no longer desirable for having
The engineering construction of the prefabricated pile of major diameter (stake outer diameter >=800mm) and long length (stake long >=10m) feature, and middle pick is owned by France in non-
Squeezing Soil Pile, work progress more environmental protection and the construction suitable for the hollow preformed pile to major diameter, therefore often adopted in engineering at present
It is constructed with middle pick method to such prefabricated pile.But there is also the deficiencies of following aspect for middle pick method: since prefabricated pile is integrated
Molding structure and volume be big, weight weight, and the construction system being related in pile driving process is numerous and jumbled, device therefor and consuming are constructed into
This height, efficiency are lower, and the bearing capacity at end is reduced after pile, therefore the specification of applicable prefabricated pile is greatly limited
System.
In conclusion the construction method of the prefabricated tubular pile long to length, diameter is big and device is needed to improve in industry,
Under the premise of guaranteeing prefabricated quality of pile, the utilization rate of existing construction equipment is improved as far as possible and expands application range, to drop
Low difficulty of construction.
Utility model content
Existing construction limitation can be broken through the purpose of this utility model is to provide one kind and meets long length large diameter pile foundation
It is required that prefabricated tubular pile, to solve the problems, such as to propose in background technique.
To achieve the above object, the utility model provides a kind of long prefabricated tubular pile of major diameter that classification promotes, including upper
The pile body and pile top of lower setting, the pile body is hollow structure and the pile body including more piece equal length, in the pile top and stake
Sleeve is set between adjacent two pile body in body and pile body, and the lower end of the sleeve is using under the mode that is fixedly connected and each section pile body
It holds in the movable insertion sleeve, supporting point of the internal cavities platform as sinking thrust is set between adjacent pile body；Pass through
Push rod and the shoulder that the push rod lower end is arranged in realize that the classification to prefabricated tubular pile promotes, past after arrival predetermined depth
Casting concrete is in the cavity of prefabricated tubular pile to complete the embedded work of entire prefabricated tubular pile.
In order to cooperate the classification to prefabricated tubular pile to promote, the push rod also uses subsection connecting structure, can be according to prefabricated pipe
The real time length of stake is attached and dismantles, convenient for applying sinking thrust.When the push rod moves up and down inside pile body, institute
It is in closed state to state shoulder, when the push rod is promoted to loading position, the shoulder in unfolded state and with it is perpendicular
Histogram gives segmentation one downward thrust of pile body to an angle, by the interaction of shoulder and cavity platform.
Preferably, the cavity diameter of the pile body is from top to bottom to be gradually increased, and can be connected in the cavity of adjacent two pile body
Place directly forms cavity platform.
Preferably, the cavity of the pile body is divided into first part, second part and third according to diameter change from top to bottom
Part, wherein the inner and outer diameter difference of first part's highest point is 2a, and the inner and outer diameter difference of second part is fixed value 2b, third
The inner and outer diameter difference of part lowest part matches for the size of 2c, the size of a, b, c and the pile body of actual use and push rod.
It is highly preferred that the difference between a and c is 10~15cm.
Preferably, the pile top is the enclosed construction of cone.
Preferably, the internal diameter of the sleeve is greater than 0.5~2.0cm of outer diameter of the pile body.
Since sleeve will also sink to underground, excessive in order not to cause penetration resistance to increase, the outer diameter of the sleeve cannot mistake
Greatly；The internal diameter of the sleeve can not be excessive, and otherwise the excessive effect for not having a section pile body on limit value instead in gap, is easy to lead
Pile body lower end is caused phenomenon of press-offing occur；The internal diameter of the sleeve can not be too small, otherwise the too small insertion for being not easy to pile body in gap
And installation.
Equally, the height of the sleeve should be arranged to match with the length of single-unit pile body, it is excessively high, it increases every
Sinking power when the secondary progress pile sinking to merogenesis pile body, too low, the number of operations for causing classification to promote greatly increases, and process is numerous
It is trivial and required construction requirement is not achieved.
The construction method of above-mentioned prefabricated tubular pile are as follows: the pile top of prefabricated tubular pile is sunk in soil using sinking apparatus, it will be prefabricated
The pile body of tubular pole splits into the hollow pile body of more piece, realizes adjacent two pile body in the pile top and pile body and pile body by sleeve
Between free-standing connection, are carried out by classification and is promoted so that prefabricated pipe for the pile top and each section pile body from the bottom to top using push rod
Stake is gradually sunk, and continuous with prefabricated tubular pile sinks to increasing the pile body joint number of connection, when prefabricated tubular pile reaches the depth of construction
After it is required that, the push rod and casting concrete are recycled to fill the gap between pile body.
Specific step is as follows for the construction method:
1) pile body of prefabricated tubular pile is split into the hollow pile body of more piece, internal cavities platform is set between adjacent two pile body
In order to which push rod applies sinking thrust to pile body, the pile top of prefabricated tubular pile is sunk in soil using sinking apparatus；
2) sleeve is fixedly installed in the upper end of the pile top and the lower end of first segment pile body is inserted into the sleeve, directly
It is completely attached to first segment pile body and the pile top, a sleeve is also fixedly installed in the upper end of first segment pile body and by the second section
The lower end of pile body is inserted into the sleeve, the push rod is from top to bottom inserted into the cavity of pile body, using setting in the push rod
The shoulder of lower end pushes pile top and the first and second section pile body gradually to sink；
3) with the continuous sinking of prefabricated tubular pile, third section, Section four ... are added one by one in the top of the second section pile body
N-th section pile body, and the connection type between adjacent pile body is referring to step 2)；
4) sinking construction of prefabricated tubular pile is operated are as follows: pile top of sinking again first closes the shoulder and by institute
It states push rod to drop at pile top position, pushing directly on the push rod makes the pile top sink, and then successively sinks from top to bottom
Each section pile body, promotes the push rod and the cavity that the shoulder is moved between the i-th section pile body and i+1 section pile body is flat
On platform, the shoulder is unfolded, by the push rod by the i-th section pile body push down on to the pile top or the (i-1)-th section stake
Body contact；
5) it after prefabricated tubular pile reaches the depth requirements of construction, closes the shoulder and takes out the push rod, pour
Concrete is to fill the gap between pile body.
Wherein, the pile top needs to ensure to be reserved with partial sleeves above soil layer during sinking to next in order to install
Save pile body；Single submergence depth, which need to be controlled, when carrying out to the pile top and sinking and operate is lower than the clear height of the sleeve at least
0.2m, to avoid occurring the case where sleeve is separated from each other with pile body in subsequent sinking watching.
Technical solution provided by the utility model at least has the following beneficial effects:
1, technical solution provided by the utility model solves deficiency existing for existing prefabricated pile pile making method (i.e. pile sinking is set
Standby maximum power is difficult to length is long, volume is big, the prefabricated pile of weight weight is integrally depressed into projected depth), on the one hand by pile top
The pile side resistance that the end resistance of receiving is born with pile body separates, the biggish stake on the other hand also bearing entire pile body
Collateral resistance is separated into the lesser pile side resistance of multistage, can greatly reduce the resistance that each progradation need to overcome in this way, break
Limitation of the existing equipment in terms of prefabricated tubular pile construction depth, realizes and maximally utilizes to equipment, also reduce and greatly enhance
The difficulty of construction of degree, major diameter prefabricated tubular pile.
2, the utility model is arranged to the cavity of each section pile body to straighten gauge structure and from top to bottom be gradually increased, on the one hand
It is stitched together by the biggish internal diameter in i+1 section pile body lower part and the i-th lesser internal diameter in section pile body top, forms one enough
Big cavity platform plays and provides force point-supported effect for push rod, on the other hand at the minimum diameter of every section pile body
The effect of contraction to push rod is played, leads to push rod buckling to prevent occurring eccentric force during piling, the structure for increasing push rod is steady
It is qualitative.
Detailed description of the invention
It, below will be to required in embodiment description in order to illustrate more clearly of the technical scheme in the embodiment of the utility model
Attached drawing to be used is briefly described, it should be apparent that, drawings discussed below is only some implementations of the utility model
Example, for those of ordinary skill in the art, without creative efforts, can also obtain according to these attached drawings
Obtain other attached drawings, in which:
Fig. 1 is the constructing structure figure in the preferred embodiment in the utility model 1 to pile top and first segment pile body；
Fig. 2 is in the preferred embodiment in the utility model 1 to the connection structure diagram of adjacent two pile body；
Fig. 3 is the A-A of single-unit pile body in Fig. 2 to structure sectional view；
Structural schematic diagram when Fig. 4 is shoulder unfolded state in the preferred embodiment in the utility model 1；
In figure: 1 pile top, 2 pile bodies, 3 sleeves, 4 push rods, 5 shoulders.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describing, it is clear that described embodiment is only a part of the embodiment of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Embodiment 1
Referring to figs. 1 to 4, a kind of long prefabricated tubular pile of major diameter that classification promotes, including pile body and pile top setting up and down
1, the pile body is adjacent in the pile top 1 with pile body and pile body for hollow structure and including the pile body of more piece equal length 2
Sleeve 3 is set between two pile bodies, and the lower end of the sleeve 3 is using the lower end of the mode that is fixedly connected and each section pile body movably from upper
It is inserted into the sleeve 3, supporting point of the internal cavities platform as sinking thrust is set between adjacent pile body.
In the present embodiment, the pile top 1 is the enclosed construction of cone；The cavity diameter of the pile body 2 be by up to
Under be gradually increased and be divided into first part, second part and Part III from top to bottom according to diameter change, wherein first part
The inner and outer diameter difference of highest point is 2a, and the inner and outer diameter difference of second part is fixed value 2b, Part III lowest part it is inside and outside straight
Diameter difference matches for the size of 2c, the size of a, b, c and the pile body 2 of actual use and push rod 4.The present embodiment utilizes adjacent
The first part of two pile body junctions and Part III directly form cavity platform, and the difference between a and c is 10~15cm.
In the present embodiment, the internal diameter of the sleeve 3 is greater than the outer diameter 1cm of the pile body 2.
It is additionally provided with push rod 4 in the present embodiment, the lower end of the push rod 4 is provided with openable and closable shoulder 5, leads to
It crosses the push rod 4 and shoulder 5 realizes that the classification to prefabricated tubular pile promotes, reach the cavity of past prefabricated tubular pile after predetermined depth
Interior casting concrete is to complete the embedded work of entire prefabricated tubular pile.
The construction method of above-mentioned prefabricated tubular pile specifically comprises the following steps:
1) it is positioned using center point coordinate of the total station to prefabricated pile pile sinking position；
2) sinking apparatus is moved at pile sinking position, pile top 1 is connect and by sleeve 3 in first segment with first segment pile body
The upper end of pile body connects sleeve 3, is then inserted into push rod 4 in the cavity of first segment pile body, using sinking apparatus by prefabricated tubular pile
Pile top 1 and first segment pile body sink in soil, prevent from pile body occurs during the pile driving process by the constraint of limit value to push rod 4 inclined
Position；
3) when first segment pile body is depressed at the upper end sleeve 3, the second section pile body is installed, recycles sinking apparatus by pile top
1 sinks with pile body 2, is promoted at the cavity platform that 4 to the first and second section pile body of push rod is generated due to gauge structure in becoming, utilizes exhibition
The shoulder 5 opened advances downwardly prefabricated tubular pile；
4) step 3) is repeated, third section, Section four ... n-th are installed in the top of the second section pile body by sleeve 3 one by one
Pile body is saved, and pushes the continuous sinking of entire prefabricated tubular pile by push rod 4；
5) sinking of prefabricated tubular pile is operated in step 4) are as follows: sinking pile top 1 again first closes the shoulder 5
And drop to the push rod 4 at 1 position of pile top, pushing directly on the push rod 4 makes the pile top 1 sink, then from top to bottom
Ground successively sinks each section pile body, promotes the push rod 4 and the shoulder 5 is made to be moved to the i-th section pile body and the stake of i+1 section
On cavity platform between body, the shoulder 5 is unfolded, by the push rod 4 by the i-th section pile body push down on to the stake
Point 1 or the contact of the (i-1)-th section pile body；
6) after last time sinking prefabricated tubular pile, pile top 1 is more than target depth and makes each section pile body in sleeve using push rod 4
Interior connection is integral, closes shoulder 5 and takes out push rod 4, while being poured using concrete to prefabricated tubular pile cavity, with
Fill the gap between pile body.
It should be noted that the pile top 1 need to ensure to be reserved with above soil layer during sinking to partial sleeves so as to
In the next section pile body of installation；Carrying out to control single submergence depth when operation lower than the sleeve 3 to the pile top 1
Clear height 0.5m, to avoid occurring the case where sleeve is separated from each other with pile body in subsequent sinking watching.
In the present embodiment, first individually sink to pile top, only need to overcome end resistance at this time；Sink it in pile top
Afterwards, cavity structure is formd in the soil body, only needs to overcome lesser stake side skin friction that merogenesis pile body sinks i.e. one by one at this time
It can.On the one hand the construction method separates the pile side resistance that the end resistance that pile top is born is born with pile body；On the other hand
Effectively separated by the whole pile side resistance that merogenesis pile body bears pile body, existing equipment can be broken and applied in prefabricated pile
Limitation in terms of work depth is broken through under current plant capacity to realize maximally utilizing for existing sinking apparatus to prefabricated pipe
The stake depth limit of sinking construction and the specification limit of acted on prefabricated tubular pile.
The above is only the preferred embodiment of the present invention, is not intended to limit the patent protection model of the utility model
It encloses, for those skilled in the art, the present invention may have various modifications and changes.In the spirit of the utility model
Within principle, any improvement made by using the description of the utility model and the drawings or equivalent replacement, directly or
It is used in other relevant technical fields indirectly, should all include in the scope of patent protection of the utility model.
Claims (6)
1. a kind of long prefabricated tubular pile of major diameter that classification promotes, which is characterized in that including pile body and pile top (1) setting up and down,
The pile body is hollow structure and the pile body (2) including more piece equal length, the phase in the pile top (1) with pile body and pile body
Sleeve (3) are set between adjacent two pile bodies, the lower end of the sleeve (3) is movable using the lower end of the mode that is fixedly connected and each section pile body
It is inserted into the sleeve (3), supporting point of the internal cavities platform as sinking thrust is set between adjacent pile body；Pass through push rod
(4) and shoulder (5) of the setting in the push rod (4) lower end is realized and is promoted to the classification of prefabricated tubular pile, reaches pre- depthkeeping
After degree in the cavity of prefabricated tubular pile casting concrete to complete the embedded work of entire prefabricated tubular pile.
2. the long prefabricated tubular pile of the major diameter for being classified propulsion according to claim 1, which is characterized in that the sky of the pile body (2)
Chamber diameter is from top to bottom to be gradually increased, and can directly form cavity platform in the cavity junction of adjacent two pile body.
3. the long prefabricated tubular pile of the major diameter for being classified propulsion according to claim 2, which is characterized in that the sky of the pile body (2)
Chamber is divided into first part, second part and Part III according to diameter change from top to bottom, wherein first part's highest point it is interior
Overall diameter difference is 2a, and the inner and outer diameter difference of second part is fixed value 2b, and the inner and outer diameter difference of Part III lowest part is 2c, a,
B, the size of c and the size of the pile body of actual use (2) and push rod (4) match.
4. the long prefabricated tubular pile of the major diameter for being classified propulsion according to claim 3, which is characterized in that the difference between a and c is
10~15cm.
5. the long prefabricated tubular pile of the major diameter for being classified propulsion described according to claim 1~any one of 4, which is characterized in that institute
State the enclosed construction that pile top (1) is cone.
6. the long prefabricated tubular pile of the major diameter for being classified propulsion according to claim 5, which is characterized in that the sleeve (3) it is interior
Diameter is greater than the 0.5~2.0cm of outer diameter of the pile body (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821759096.XU CN209025070U (en) | 2018-10-29 | 2018-10-29 | A kind of long prefabricated tubular pile of major diameter that classification promotes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821759096.XU CN209025070U (en) | 2018-10-29 | 2018-10-29 | A kind of long prefabricated tubular pile of major diameter that classification promotes |
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| Publication Number | Publication Date |
|---|---|
| CN209025070U true CN209025070U (en) | 2019-06-25 |
Family
ID=66907548
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821759096.XU Withdrawn - After Issue CN209025070U (en) | 2018-10-29 | 2018-10-29 | A kind of long prefabricated tubular pile of major diameter that classification promotes |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024562A (en) * | 2018-10-29 | 2018-12-18 | 中南大学 | A kind of long prefabricated tubular pile of major diameter and its construction method of classification propulsion |
-
2018
- 2018-10-29 CN CN201821759096.XU patent/CN209025070U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109024562A (en) * | 2018-10-29 | 2018-12-18 | 中南大学 | A kind of long prefabricated tubular pile of major diameter and its construction method of classification propulsion |
| CN109024562B (en) * | 2018-10-29 | 2024-03-15 | 中南大学 | Graded-propulsion large-diameter long prefabricated pipe pile and construction method thereof |
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