CN104120714A - Manual hole digging pile and construction method thereof - Google Patents
Manual hole digging pile and construction method thereof Download PDFInfo
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- CN104120714A CN104120714A CN201410359761.6A CN201410359761A CN104120714A CN 104120714 A CN104120714 A CN 104120714A CN 201410359761 A CN201410359761 A CN 201410359761A CN 104120714 A CN104120714 A CN 104120714A
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- main body
- enlarged footing
- wing plate
- hand excavated
- excavated pile
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Abstract
The invention provides a manual hole digging pile, and relates to the field of electric power engineering. The manual hole digging pile comprises a body and wing plates. The body is columnar, one end of the body is provided with at least two wing plates, the wing plates are arranged on the side walls of the body, the top faces of the wing plates are flush with the end face of the body, and the wing plates stretch in the length direction of the body. The manual hole digging pile and a construction method of the manual hole digging pile have the advantages that the diameter and the burial depth of the manual hole digging pile are reduced, and structural materials are saved.
Description
Technical field
The present invention relates to power engineering field, in particular to a kind of hand excavated pile.
Background technology
One of basic pattern that common hand excavated pile is mountain area, hilly ground iron tower of power transmission line is conventional.The type basis belongs to undisturbed soil basis, does not adopt heavy excavation, but adopts concrete guard wall supporting, then manually draw and dig to design buried depth, finally with soil for mould basis of formation physical dimension model, descending reinforcing cage concreting moulding.
The top earth resistance of the hand excavated pile on undisturbed soil basis is less, is easily subject to the interference of horizontal force, produces larger moment of flexure, causes hand excavated pile top that larger displacement occurs.For this reason, diameter and the buried depth of having to increase hand excavated pile improve the crystallized ability of ground to hand excavated pile, and then reduce the displacement on hand excavated pile top.
Summary of the invention
The object of the present invention is to provide a kind of hand excavated pile, to solve the above problems.
Hand excavated pile provided by the invention, comprise main body and wing plate, described main body is the column that comprises two ends and a sidewall, one end of described main body is provided with the wing plate of at least two, described wing plate is arranged on the sidewall of described main body, the end face of described wing plate and the end face of described main body, described wing plate extends along the length direction of described main body.
Wing plate is arranged on one end of main body, and at least two identical wing plates are arranged on one end of described main body, and the end face of wing plate and the end face of main body while wing plate extend along the length direction of main body, and wing plate radially extends on the sidewall of the one end that is arranged on main body.
Hand excavated pile as above, preferably, described main body is cylinder, and described wing plate is rectangular slab, and the 1-2 that the width of described wing plate is main diameter is doubly.Doubly, the value of this scope can provide enough passive earth pressures to the 1-2 that the value of general width is main diameter, can not waste too much material simultaneously.
Hand excavated pile as above, preferably, the length of described wing plate equals the width of described wing plate.The length of wing plate is identical with width, described wing plate be shaped as square, the passive earth pressure that this foursquare wing plate is subject to is more even, makes the top of hand excavated pile more stable.
Hand excavated pile as above, preferably, also comprises reinforcing cage, and described reinforcing cage is embedded in described main body and described wing plate, and the reinforcing cage in the reinforcing cage in described wing plate and described main body intersects.Reinforcing cage in wing plate and the reinforcing cage in main body intersect the bonding strength that can improve wing plate and main body, make the combination of wing plate and main body more firm.
Hand excavated pile as above, preferably, also comprise the first enlarged footing, described the first enlarged footing is arranged on described main body away from the other end of described wing plate, described the first enlarged footing extend out the outer profile size that size is greater than described main body, described enlarged footing end face is lower arcuate surface.Utilize the enlarged footing of the first enlarged footing lower arcuate surface can further improve the foundation bearing capacity of hand excavated pile.
Hand excavated pile as above, preferably, also comprise at least one second enlarged footing, described the second enlarged footing is arranged between the two ends of described main body, described the second enlarged footing extend out the outer profile size that size is greater than described main body, described the second enlarged footing is frustum.Because the impact of single enlarged footing is only confined in the scope of 4～10 times of more than enlarged footing diameters, vertical bearing capacity of single pile is limited.Adopt multiple tracks enlarged footing, in the buried depth scope of whole manually digging hole post, be all subject to like this impact of enlarged footing, further reduce the diameter of hand excavated pile.
Hand excavated pile as above, preferably, described second enlarged footing is arranged on the middle part of described main body, and the diameter of described the second enlarged footing is identical with the diameter of described the first enlarged footing.Arrange after two enlarged footings, the vertical bearing capacity of stake can be greatly improved, thereby can reduce pile body diameter or buried depth, thereby saves structural meterials consumption, has certain Technological Economy comparative advantages.
The present invention also provides the construction method of hand excavated pile described in more than one, comprises step:
On ground, draw the model that digs main body top;
In Liang Ge side, the top of main body, draw the model that digs wing plate;
Waist in main body excavates the second enlarged footing;
Below the second enlarged footing, continue to draw the lower model of digging main body;
In the bottom of main body, excavate the first enlarged footing;
In drawing the model of the main body of digging and the model of wing plate, place reinforcing cage, first in the model of main body, place reinforcing cage, then in the model of wing plate, place reinforcing cage;
In the model of main body and in the model of wing plate, add packing material.
Adopt this construction method can high efficiencyly complete the construction of hand excavated pile.
The construction method of hand excavated pile as above, preferably, described enlarged footing is two, described the first enlarged footing and described the second enlarged footing expand measure-alike, described on ground, draw the model that digs main body before, also comprise according to single manually digging hole pile vertical carrying capacity, calculate the large-sized value of expansion of main body, the first enlarged footing and second enlarged footing of single hand excavated pile.The value of the diameter of the first enlarged footing calculating, the expansion size of the second enlarged footing and main body, buried depth etc., meets the requirement of construction more, can meet strength demand.
The construction method of hand excavated pile as above, preferably, described main body is cylinder, utilizes formula Q
uk=u ∑ ψ
siq
sikl
si+ ψ
p1q
pk1a
p1+ ψ
p2q
pk2a
p2carry out the large-sized exploitation of expansion of main body, the first enlarged footing and second enlarged footing of described single hand excavated pile, wherein,
Q
ukfor vertical ultimate bearing capacity of single pile standard value;
U is hand excavated pile perimeter of section;
ψ
silarge diameter pile side resistance coefficient, experience value;
Q
sikthe limit collateral resistance standard value of stake side i layer soil, experience value;
L
sithe buried depth of hand excavated pile, experience value;
ψ
p1first expands head end resistance dimensional effect coefficient, experience value;
Q
pk1the extreme end resistance standard value of the first enlarged footing, experience value;
A
p1the end stake area of the first enlarged footing;
ψ
p2second expands head end resistance dimensional effect coefficient, experience value;
Q
pk2the extreme end resistance standard value of the second enlarged footing, experience value;
A
p2the end stake area of the second enlarged footing;
Bring single hand excavated pile vertical applied force into vertical ultimate bearing capacity of single pile standard value in formula, then draw the expansion size span of main diameter, the first enlarged footing and second enlarged footing of single hand excavated pile.Utilize formula, can calculate quickly and accurately the diameter span of main diameter, buried depth, the first enlarged footing and the second enlarged footing.
The beneficial effect of the construction method of hand excavated pile provided by the invention and hand excavated pile is, by the one end at hand excavated pile, set up wing plate, wing plate is arranged on to the outside of main body, the bearing of trend of wing plate is the axis direction along main body, utilize wing plate, expanded the contact area of hand excavated pile and ground, increased the passive earth pressure on hand excavated pile top, reduce the horizontal force on hand excavated pile top, and then reduce the moment of flexure that hand excavated pile top is subject to, finally reduced the horizontal movement on hand excavated pile top, diameter and the buried depth of hand excavated pile have been reduced accordingly simultaneously, saved structural meterials.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the hand excavated pile that provides of first embodiment of the invention;
Fig. 2 is the schematic diagram of the hand excavated pile that provides of second embodiment of the invention.
The specific embodiment
Below by specific embodiment, also by reference to the accompanying drawings the present invention is described in further detail.
Fig. 1 is the hand excavated pile that first embodiment of the invention provides, as shown in Figure 1, the hand excavated pile that first embodiment of the invention provides comprises main body 1 and wing plate 2, main body 1 is the cylinder that comprises two ends and a sidewall, one end of main body 1 is provided with the wing plate 2 of two identical rectangles, the wing plate 2 of rectangle is arranged on the sidewall of main body 1, the end face of the end face of wing plate 2 and main body 1, and wing plate 2 extends along the axis direction of main body 1.
Wing plate 2 is arranged on one end of main body 1, two identical wing plates 2 are arranged on one end of main body 1, the end face while wing plate 2 of one end of the end face of wing plate 2 and main body 1 extends along the axis of main body 1, and wing plate 2 radially extends on the sidewall of the one end that is arranged on main body 1.Setting up of wing plate 2, make mounted hand excavated pile utilize the clamping of ground to wing plate 2, increased the contact area of manually digging hole post top and ground, improved the passive earth pressure on hand excavated pile top, thereby reduced the maximal bending moment that top is subject to, correspondingly reduced the horizontal movement on hand excavated pile top.So just do not need to reduce the horizontal movement on hand excavated pile top by the diameter of increase hand excavated pile or the buried depth of increase hand excavated pile, saved construction cost and material cost.
Fig. 2 is the hand excavated pile that second embodiment of the invention provides, and as shown in Figure 2, the hand excavated pile that second embodiment of the invention provides comprises main body 1 and wing plate 2, and main body 1 is the column that comprises two ends and a sidewall, and column is cylinder.One end of main body 1 is provided with the wing plate 2 of at least two identical rectangles, and the wing plate 2 of rectangle is arranged on the sidewall of main body 1, the end face of the end face of wing plate 2 and main body 1, and wing plate 2 is along the Axis Extension of main body 1.
Further, the width of single rectangle wing plate 2 is 1.5 times of main body 1 diameter.The width of wing plate is the value that wing plate 2 extends in the diametric(al) of main body 1, and the length of wing plate 2 equals the width of wing plate 2, and the length of wing plate 2 is that wing plate 2 is in the value of the axis direction extension of main body 1.The value of width is 1-2 times of main body 1 diameter, and the value of this scope can provide enough passive earth pressures, can not waste too much material simultaneously.
In hand excavated pile, also comprise that reinforcing cage, reinforcing cage are embedded in main body 1 and wing plate 2, the reinforcing cage in the reinforcing cage in wing plate 2 and main body 1 intersects simultaneously.Reinforcing cage in reinforcing cage in wing plate 2 and main body 1 intersects the bonding strength that can improve wing plate 2 and main body 1, makes the combination of wing plate 2 and main body 1 more firm.
In the present embodiment, also comprise that the first enlarged footing 3 and second enlarged footing 4, the first enlarged footings 3 are arranged on main body 1 away from the other end of wing plate 2, the first enlarged footing 3 extend out the diameter that size is greater than main body 1, enlarged footing end face is lower arcuate surface.The second enlarged footing 4 is arranged between the two ends of main body 1, the second enlarged footing 4 extend out the diameter that size is greater than main body 1, the diameter of the second enlarged footing 4 is identical with the diameter of the first enlarged footing 3, the second enlarged footing 4 is frustum.
The first enlarged footing 3 is owing to extending out size and be greater than the diameter of main body 1, and when hand excavated pile is embedded in ground, the first enlarged footing 3 stretches in soil, can improve the basic supporting capacity of hand excavated pile.But, in power engineering, the buried depth of the hand excavated pile that some bearing loads are larger is all larger, simultaneously draw ratio sometimes more than ten than one, according to the calculating to the sphere of action of enlarged footing, the part of enlarged footing can only improve enlarged footing the vertical bearing capacity of nigh hand excavated pile bottom.For the anti-pulling capacity that expands end uplift pile, the anti-pulling capacity failure mode of expanded bore pile becomes with native angle of internal friction size, and angle of internal friction is larger, is expanded the destruction cylinder that the end affects longer.Expand the above length in the end and be about within the scope of 4～10 times of diameter, the column diameter that breaks just increases to bellout diameter D; Surpass the above part of this scope, the plane of fracture is contracted to a Soil Interface.Be that more than one end of the Beneficial Effect of general the first enlarged footing 3 installation the first enlarged footing 3 of being only confined to hand excavated pile length is in diameter 4-10 scope doubly, single the first enlarged footing 3 that is arranged on one end is limited for the raising of vertical bearing capacity, therefore can consider, at the waist of pile body, enlarged footing is set one again, multiple tracks enlarged footing is even set, in the buried depth scope of whole stake, be all subject to like this impact of enlarged footing, when calculating anti-pulling capacity during pile body girth, just can be all by u=π D, calculate that (u is girth, D is enlarged footing diameter), with less cost, greatly improved anti-pulling capacity.In addition, after one the second enlarged footing 4 of waist setting of pile body, being equivalent to has increased a chuck at pile body waist, can improve side and drag ground of hand excavated pile, reduce the stake top displacement of hand excavated pile, improve the pile body stiffness of hand excavated pile.Arrange after two enlarged footings, the vertical bearing capacity of stake can be greatly improved, thereby can reduce diameter or the buried depth of the shaft of main body 1, thereby saves structural meterials consumption, has certain Technological Economy comparative advantages.
Two enlarged footing hand excavated piles are when construction; should be specifically noted that the verticality in the hole, hole of the first enlarged footing 3 and the second enlarged footing 4; hole, two sections hole is centering accurately; the diameter of borehole should strictly be controlled; to guarantee reinforcing cage hoisted in position smoothly, and to guarantee that the topping of reinforcing bar meets designing requirement.The first enlarged footing 3 and the second enlarged footing 4 should be drawn and dig in strict accordance with the gradient of drawing requirement when construction, and angle of inclination must not be greater than 45 °, and before lifting reinforcing cage, the end is clean clearly.When drawing the basic hole concreting of ground of the hand excavated pile digging, should build successively from bottom to top vibration compacting, paying special attention to enlarged footing place should build closely knit, must not leave defect, should bury ultrasonic wave test tube underground if desired, to detect the integrality of hand excavated pile.
A construction method for the hand excavated pile that the second embodiment provides, comprises step:
According to single manually digging hole pile vertical carrying capacity, calculate the value of diameter of main body 1, the first enlarged footing 3 and second enlarged footing 4 of single hand excavated pile;
On ground, draw the model that digs main body top;
Upper outside face in main body is drawn the model that digs wing plate;
Waist in main body excavates the second enlarged footing;
Below the second enlarged footing, continue to draw the lower model of digging main body;
In the bottom of main body, excavate the first enlarged footing;
In drawing the model of the main body of digging and the model of wing plate, place reinforcing cage, first in the model of main body, place reinforcing cage, then in the model of wing plate, place reinforcing cage;
In the model of main body and in the model of wing plate, add packing material.
Utilize formula Q
uk=u ∑ ψ
siq
sikl
si+ ψ
p1q
pk1a
p1+ ψ
p2q
pk2a
p2carry out the exploitation of diameter of main body, the first enlarged footing 3 and second enlarged footing 4 of described single hand excavated pile, wherein,
Q
ukfor vertical ultimate bearing capacity of single pile standard value;
U is hand excavated pile perimeter of section;
ψ
sifor large diameter pile side resistance coefficient, experience value;
Q
sikfor the limit collateral resistance standard value of stake side i layer soil, experience value;
L
sifor the buried depth of hand excavated pile, experience value;
ψ
p1be the first enlarged footing 3 end resistance dimensional effect coefficients, experience value;
Q
pk1be the extreme end resistance standard value of the first enlarged footing 3, experience value;
A
p1it is the end stake area of the first enlarged footing 3;
ψ
p2be the second enlarged footing 4 end resistance dimensional effect coefficients, experience value;
Q
pk2be the extreme end resistance standard value of the second enlarged footing 4, experience value;
A
p2it is the end stake area of the second enlarged footing 4;
Bring single hand excavated pile vertical applied force into vertical ultimate bearing capacity of single pile standard value in formula, then draw the diameter span of the first enlarged footing 3 and second enlarged footing 4 of single hand excavated pile.Utilize formula, can calculate quickly and accurately the diameter span of diameter, the first enlarged footing 3 and second enlarged footing 4 of main body 1.
Two enlarged footing hand excavated piles are when construction, should be specifically noted that the verticality in the hole, hole of the first enlarged footing 3 and the second enlarged footing 4, hole, two sections hole is centering accurately, the diameter of borehole should strictly be controlled, to guarantee reinforcing cage hoisted in position smoothly, and guarantee that the topping of reinforcing bar meets designing requirement.The first enlarged footing 3 and the second enlarged footing 4 should be drawn and dig in strict accordance with the gradient of drawing requirement when construction, and angle of inclination must not be greater than 45 °, and before lifting reinforcing cage, the end is clean clearly.When drawing ground empty of the hand excavated pile digging, during concreting, should build successively from bottom to top vibration compacting, paying special attention to enlarged footing place should build closely knit, must not leave defect, should bury ultrasonic wave test tube underground if desired, to detect the integrality of hand excavated pile.
In the present invention, the shape of the column of main body 1 is not limited to cylinder, rectangular column or triangular prism etc., and the shape of wing plate 2 is not limited to the wing plate of other shapes such as rectangle, triangle.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. a hand excavated pile, it is characterized in that, comprise main body and wing plate, described main body is column, one end of described main body is provided with at least two wing plates, described wing plate is arranged on the sidewall of described main body, the end face of described wing plate and the end face of described main body, and described wing plate extends along the length direction of described main body.
2. hand excavated pile according to claim 1, is characterized in that, described wing plate is rectangular slab, and the 1-2 that the width of described wing plate is main diameter doubly.
3. hand excavated pile according to claim 2, is characterized in that, the length of described wing plate equals the width of described wing plate.
4. hand excavated pile according to claim 1, is characterized in that, also comprises reinforcing cage, and described reinforcing cage is embedded in described main body and described wing plate, and the reinforcing cage in the reinforcing cage in described wing plate and described main body intersects.
5. hand excavated pile according to claim 1, it is characterized in that, also comprise the first enlarged footing, described the first enlarged footing is arranged on described main body away from the other end of described wing plate, described the first enlarged footing extend out the outer profile size that size is greater than described main body, described enlarged footing end face is lower arcuate surface.
6. hand excavated pile according to claim 5, it is characterized in that, also comprise at least one second enlarged footing, described the second enlarged footing is arranged between the two ends of described main body, described the second enlarged footing extend out the outer profile size that size is greater than described main body, described the second enlarged footing is frustum.
7. hand excavated pile according to claim 6, is characterized in that, described second enlarged footing is arranged on the middle part of described main body, described the second enlarged footing extend out the outer profile size that size is greater than described main body.
8. a construction method for hand excavated pile described in claim 1-7 any one, is characterized in that, comprises step:
On ground, draw the model that digs main body top;
Upper outside face in main body is drawn the model that digs wing plate;
Waist in main body excavates the second enlarged footing;
Below the second enlarged footing, continue to draw the lower model of digging main body;
In the bottom of main body, excavate the first enlarged footing;
In drawing the model of the main body of digging and the model of wing plate, place reinforcing cage, first in the model of main body, place reinforcing cage, then in the model of wing plate, place reinforcing cage;
In the model of main body and in the model of wing plate, add packing material.
9. the construction method of hand excavated pile according to claim 8, it is characterized in that, described enlarged footing is two, described the first enlarged footing and described the second enlarged footing expand measure-alike, described on ground, draw the model that digs main body before, also comprise according to single manually digging hole pile vertical carrying capacity, calculate the large-sized value of expansion of main body, the first enlarged footing and second enlarged footing of single hand excavated pile.
10. the construction method of hand excavated pile according to claim 9, is characterized in that, described main body is cylinder, utilizes formula Q
uk=u ∑ ψ
siq
sikl
si+ ψ
p1q
pk1a
p1+ ψ
p2q
pk2a
p2carry out the large-sized exploitation of expansion of main body, the first enlarged footing and second enlarged footing of described single hand excavated pile, wherein,
Q
ukfor vertical ultimate bearing capacity of single pile standard value;
U is hand excavated pile perimeter of section;
ψ
silarge diameter pile side resistance coefficient, experience value;
Q
sikthe limit collateral resistance standard value of stake side i layer soil, experience value;
L
sithe buried depth of hand excavated pile, experience value;
ψ
p1first expands head end resistance dimensional effect coefficient, experience value;
Q
pk1the extreme end resistance standard value of the first enlarged footing, experience value;
A
p1the end stake area of the first enlarged footing;
ψ
p2second expands head end resistance dimensional effect coefficient, experience value;
Q
pk2the extreme end resistance standard value of the second enlarged footing, experience value;
A
p2the end stake area of the second enlarged footing;
Bring single hand excavated pile vertical applied force into vertical ultimate bearing capacity of single pile standard value in formula, then draw the expansion size span of main diameter, the first enlarged footing and second enlarged footing of single hand excavated pile.
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| CN201410359761.6A CN104120714B (en) | 2014-07-25 | 2014-07-25 | The construction method of hand excavated pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410359761.6A CN104120714B (en) | 2014-07-25 | 2014-07-25 | The construction method of hand excavated pile |
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| Publication Number | Publication Date |
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| CN104120714A true CN104120714A (en) | 2014-10-29 |
| CN104120714B CN104120714B (en) | 2016-02-10 |
Family
ID=51766331
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| CN201410359761.6A Active CN104120714B (en) | 2014-07-25 | 2014-07-25 | The construction method of hand excavated pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111485572A (en) * | 2020-03-17 | 2020-08-04 | 中国电力工程顾问集团西北电力设计院有限公司 | Construction method of prefabricated root key type wing plate foundation |
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| CN1869338A (en) * | 2005-12-02 | 2006-11-29 | 郑百翔 | Manhole pile enlarged foot and its safety construction method |
| KR100963320B1 (en) * | 2009-11-13 | 2010-06-11 | 김성수 | Vertical support and frictional reinforcement structural advanced pile |
| CN103266602A (en) * | 2013-05-15 | 2013-08-28 | 南京工程学院 | Diameter-expanding pile for manual hole digging and construction method thereof |
| CN203960852U (en) * | 2014-07-25 | 2014-11-26 | 成都城电电力工程设计有限公司 | Hand excavated pile |
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2014
- 2014-07-25 CN CN201410359761.6A patent/CN104120714B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1115347A (en) * | 1995-06-23 | 1996-01-24 | 西诺国际顾问(武汉)有限公司 | Wing disk-shape concrete casting pile and its operation method |
| JP2005163348A (en) * | 2003-12-02 | 2005-06-23 | Railway Technical Res Inst | Steel-made driving pipe steel material, steel-made driving pile and construction method of seel-made driving pipe |
| CN1869338A (en) * | 2005-12-02 | 2006-11-29 | 郑百翔 | Manhole pile enlarged foot and its safety construction method |
| KR100963320B1 (en) * | 2009-11-13 | 2010-06-11 | 김성수 | Vertical support and frictional reinforcement structural advanced pile |
| CN103266602A (en) * | 2013-05-15 | 2013-08-28 | 南京工程学院 | Diameter-expanding pile for manual hole digging and construction method thereof |
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| CN111485572A (en) * | 2020-03-17 | 2020-08-04 | 中国电力工程顾问集团西北电力设计院有限公司 | Construction method of prefabricated root key type wing plate foundation |
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| CN104120714B (en) | 2016-02-10 |
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