CN105256794A - Cement soil mixing pile with strong variable-diameter core piles - Google Patents
Cement soil mixing pile with strong variable-diameter core piles Download PDFInfo
- Publication number
- CN105256794A CN105256794A CN201510604543.9A CN201510604543A CN105256794A CN 105256794 A CN105256794 A CN 105256794A CN 201510604543 A CN201510604543 A CN 201510604543A CN 105256794 A CN105256794 A CN 105256794A
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- CN
- China
- Prior art keywords
- strength core
- stake
- reducing strength
- pile
- mixing method
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/34—Concrete or concrete-like piles cast in position ; Apparatus for making same
- E02D5/46—Concrete or concrete-like piles cast in position ; Apparatus for making same making in situ by forcing bonding agents into gravel fillings or the soil
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D5/00—Bulkheads, piles, or other structural elements specially adapted to foundation engineering
- E02D5/22—Piles
- E02D5/48—Piles varying in construction along their length, i.e. along the body between head and shoe, e.g. made of different materials along their length
Abstract
The invention belongs to the technical field of buildings and relates to a cement soil mixing pile with variable-diameter core piles. The cement soil mixing pile with the variable-diameter core piles comprises a cement soil mixing pile body. At least one variable-diameter core pile is inserted into the cement soil mixing pile body. The sectional area of each variable-diameter core pile becomes smaller gradually from the top to the bottom. The cement soil mixing pile with the variable-diameter core piles is high in bearing capacity, high in material utilization rate and more environmentally friendly.
Description
Technical field
The invention belongs to technical field of buildings, relate to the cement mixing method of a kind of reducing strength core stake.
Background technology
Cement mixing method is a kind of method for reinforcing the low ground of saturated soft clay, it utilizes cement as curing compound, by special Mixing Machine, in ground depths by weak soil and curing compound action of forced stirring, utilize the series of physical chemical reaction produced between curing compound and weak soil, weak soil is hardened into have the high-quality ground of globality, water stability and some strength.
But the bearing capacity of cement mixing method is poor, in order to improve bearing capacity, people consider to insert preformed pile in cement mixing method, but existing preformed pile is Uniform-section Piles substantially, show according to detection, the axle power that the pile body being positioned at underground preformed pile is more down subject to is less, and therefore Uniform-section Piles is a kind of waste seriously on material.
Summary of the invention
The object of the invention is for the problems referred to above, a kind of cement mixing method with the stake of reducing strength core saving material is provided.
For achieving the above object, present invention employs following technical proposal: a kind of cement mixing method with the stake of reducing strength core, comprise cement mixing method pile body, the stake of at least one reducing strength core is inserted with in described cement mixing method pile body, the sectional area of described reducing strength core stake is diminished to bottom gradually by top, has some dowels in described cement mixing method pile body.
Have in the cement mixing method of reducing strength core stake above-mentioned, described reducing strength core stake is preformed pile, and described preformed pile is hollow pile or solid pile.
Have in the cement mixing method of reducing strength core stake above-mentioned, the cross section of described preformed pile is square, H-shaped, triangle, circle, hexagon or octagon, the sectional area at described reducing strength core stake top is 4-10:1 with the ratio of the sectional area of bottom, and the external surface of described reducing strength core stake is smooth plane.
Have in the cement mixing method of reducing strength core stake above-mentioned, the external surface of described reducing strength core stake the axis along the stake of reducing strength core is densely covered with step, and plane residing for the surface of described step is vertical with the axial line of reducing strength core stake, the height of described each step is identical.
Have in the cement mixing method of reducing strength core stake above-mentioned, the two ends of described reducing strength core stake are fixed with some attaching nuts, and the two ends of dowel are fixedly connected with the attaching nut at reducing strength core stake two ends respectively.
Have in the cement mixing method of reducing strength core stake above-mentioned, chuck is formed after reducing bottom described attaching nut, rear formation boss is expanded at the two ends of described dowel, and described boss is with chuck snap-fit engagement thus dowel is fixedly connected with attaching nut.
Have in the cement mixing method of reducing strength core stake above-mentioned, the cavity of taper is provided with bottom described attaching nut, be provided with the tapered snap ring be made up of at least two panels card in cavity, card inwall has concave/convex-shaped structure, and the end of dowel to be placed in snap ring and to be clamped by card inwall.
Have in the cement mixing method of reducing strength core stake above-mentioned, the inwall that described attaching nut is positioned at above snap ring has internal thread, is positioned at below snap ring and has flange circle bottom attaching nut.
Have in the cement mixing method of reducing strength core stake above-mentioned, described pile body two ends are respectively arranged with one piece of end plate be fixedly connected with pile body, end plate is provided with some taper fastener holes, the tapered snap ring be made up of at least two panels card is provided with in described taper fastener hole, card inwall has concave/convex-shaped structure, and the end of dowel to be placed in snap ring and to be clamped by card inwall.
Have in the cement mixing method of reducing strength core stake above-mentioned, described end plate is provided with the T-shaped connecting hole of cross section, is connected with the fastener nut that cross section is T-shaped in described connecting hole, has taper fastener hole in described fastener nut.
Compared with prior art, the invention has the advantages that: bearing capacity is high, crushing resistance is good, and stock utilization is high, more environmental protection.
Accompanying drawing explanation
Fig. 1 is the structural representation that embodiment 1 provides;
The another kind of structural representation that Fig. 2 embodiment 2 provides;
Fig. 3 is pile shaft force figure under the loads at different levels of the Plotting data provided according to table 1;
Structural representation when Fig. 4 is reducing strength core stake connection;
Fig. 5 is the A place enlarged drawing of Fig. 2;
Fig. 6 is the structural representation of embodiment 3;
Fig. 7 is the structural representation of embodiment 4;
Fig. 8 is the connection diagram of embodiment 3 pile body;
Fig. 9 is the connection diagram of embodiment 4 pile body;
Figure 10 is the another kind of schematic diagram of the connection of embodiment 4 pile body;
Figure 11 is the structural representation of embodiment 5 end plate;
Figure 12 is the another kind of structural representation of embodiment 6 end plate;
Figure 13 is the B place enlarged drawing of Fig. 6.
In figure: cement mixing method pile body 1, reducing strength core stake 2, chuck 3, attaching nut 4, dowel 5, step 6, boss 7, card 8, snap ring 9, flange circle 10, end plate 11, taper fastener hole 12, connecting hole 13, fastener nut 14, card interface 15, connector 100, shackle member 101.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
Embodiment 1
As shown in Figure 1, a kind of cement mixing method with the stake of reducing strength core, comprise cement mixing method pile body 1, cement mixing method pile body 1 stirs Post RDBMS by cement paste and soil and forms, and about the preparation method of cement mixing method, is the common practise of those skilled in the art, repeat no more herein, in this application, be inserted with at least one reducing strength core stake 2 in cement mixing method pile body 1, the sectional area of described reducing strength core stake 2 is diminished to bottom gradually by top.The external surface of reducing strength core stake 2 is smooth plane, and that is, the external surface of reducing strength core stake 2, for smoothly transitting, has some dowels 5 in described cement mixing method pile body 1.
Reducing strength core stake 2 is preformed pile.The cross section of preformed pile is square, H-shaped, triangle, circle, hexagon or octagon.Preformed pile is hollow pile or solid pile.The sectional area at described reducing strength core stake 2 top is 4-10:1 with the ratio of the sectional area of bottom.
Those skilled in the art are to be understood that, reducing strength core stake 2 represents a complete stake, he can be an independent preformed pile, also can be that many preformed piles are axially connected to form the reducing strength core stake 2 with certain length, as for the method that preformed pile connects, be then the common practise of those skilled in the art, have the preformed pile of end plate end plate can be adopted to weld thus axially connect, the preformed pile of end-plate-free can adopt connector shaft to connection.
Those skilled in the art it should also be understood that, when reducing strength core stake 2 has some, the axial line of reducing strength core stake 2 is parallel to each other and carries out corresponding layout according to the shape of cross section of cement mixing method pile body 1, and the shape Sum fanction of also i.e. some reducing strength core stake 2 arrangements does corresponding adjustment according to the shape of cement mixing method pile body 1 or the geological conditions of locality and requirement of designing and constructing.
The shape of cross section of the application to cement mixing method pile body 1 does not limit, and namely the cross section of cement mixing method pile body 1 can be circular, square, quincunx or is interconnected by the cement mixing method of multiple circle thus forms pile body.
The advantage of the application is, when guaranteed strength, effectively can save material, reduce unnecessary material consumption.Table 1 is pile shaft force table under load at different levels.
Wherein, load force and axle unit of force are KN, and the DU of pile body is m.
Pile shaft force table under table 1 load at different levels
Fig. 3 is pile shaft force figure under the loads at different levels according to table 1 drafting, can directly draw according to table 1 and Fig. 2, pile body more down time, suffered axle power is less, therefore, existing prismatic preformed pile wastes greatly, and the reducing strength core stake 2 of the application can obtain the saving of material when guaranteed strength.
The from top to bottom that is all load of all loads on stake top all to be born responsibility load by stake, the power of resistance to compression bearing peg is from stake periphery frictional force, so the bearing capacity size of stake is again the frictional force quality coming from a periphery soil, the better bearing capacity of frictional force of stake periphery is larger, as everyone knows, cement mixing method is a kind of method for reinforcing the low ground of saturated soft clay, it utilizes cement as curing compound, by special Mixing Machine, in ground depths by weak soil and curing compound action of forced stirring, utilize the series of physical chemical reaction produced between curing compound and weak soil, weak soil is hardened into there is globality, the high-quality ground of water stability and some strength.Therefore reducing strength core stake 2 and cement mixing method pile body 1 can improve frictional force, improve the bearing capacity of whole stake, can save material simultaneously.
Embodiment 2
The present embodiment is substantially identical with principle with the structure of embodiment 1, difference is, as shown in Figure 2, the external surface of reducing strength core stake 2 axis along reducing strength core stake 2 is densely covered with step 6, and the plane residing for surface of described step 6 is vertical with the axial line of reducing strength core stake 2.Preferably, the height L of each step 6 is identical.
The two ends of reducing strength core stake 2 are fixed with some attaching nuts 4, some dowels 5 are provided with in described reducing strength core stake 2, dowel 5 can be rod iron, reinforcing bar, steel strand, carbon fiber rod etc., and the two ends of dowel 5 are fixedly connected with the attaching nut 4 at reducing strength core stake 2 two ends respectively.As shown in Figure 5, form chuck 3 bottom attaching nut 4 after reducing, rear formation boss 7 is expanded at the two ends of described dowel 5, and described boss 7 is with chuck 3 snap-fit engagement thus dowel 5 is fixedly connected with attaching nut 4.
As shown in Figure 4, reducing strength core stake 2 can many be formed by connecting, thus reach the length of needs, the material connecting reducing strength core stake 2 can be connector, the patent that the concrete structure of connector and operating principle are applied for before seeing the applicant.If application number is 201510314380.0; 200810060180.7; 200810060181.1 patent.Because connector is prior art, therefore repeat no more herein.
Embodiment 3
Structure and the principle of the present embodiment are substantially the same manner as Example 2, difference is, as shown in fig 6 and fig 13, the cavity of taper is provided with bottom described attaching nut 4, the tapered snap ring 9 be made up of at least two panels card 8 is provided with in cavity, card 8 inwall has concave/convex-shaped structure, and the end of dowel 5 to be placed in snap ring 9 and to be clamped by card 8 inwall.Dowel 5 is rod iron, reinforcing bar, chemical industry section bar, carbon fiber rod, but is preferably steel strand, is convenient to clamp with snap ring 9.
The inwall that described attaching nut 4 is positioned at above snap ring 9 has internal thread, is positioned at below snap ring 9 and has flange circle 10 bottom attaching nut 4.
As shown in Figure 8, when two adjacent cement mixing method pile bodies 1 need to connect, connected by connector 100, the structure of connector 100 is as embodiment 1.
Embodiment 4
Structure and the principle of the present embodiment are substantially the same manner as Example 3, difference is, as shown in Figure 7, described cement mixing method pile body 1 two ends are respectively arranged with one piece of end plate 11 be fixedly connected with cement mixing method pile body 1, as shown in figure 12, end plate 11 is provided with some taper fastener holes 12, the tapered snap ring 9 be made up of at least two panels card 8 is provided with in described taper fastener hole 12, card 8 inwall has concave/convex-shaped structure, and the end of dowel 5 to be placed in snap ring 9 and to be clamped by card 8 inwall.
When above-mentioned cement mixing method pile body 1 needs to connect, as shown in Figure 9, two pieces of adjacent end plates 11 can be screwed tight with bolt, adjacent end plate 11 can certainly be welded.
Preferred version, as shown in figure 11, described end plate 11 is provided with the T-shaped connecting hole of cross section 13, is connected with the fastener nut 14 that cross section is T-shaped in described connecting hole 13, has taper fastener hole 12 in described fastener nut 14.Described end plate 11 outer wall is inwardly recessed the card interface 15 being formed and can insert for shackle member 101.As shown in Figure 9, shackle member 101 is split-type structural, is inserted into after in card interface 15, shackle member 101 to be screwed tight thus make adjacent end plate 11 threaded with bolt, and cement mixing method pile body 1 is axially connected.
Specific embodiment described herein is only to the explanation for example of the present invention's spirit.Those skilled in the art can make various amendment or supplement or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present invention or surmount the scope that appended claims defines.
Claims (10)
1. one kind has the cement mixing method of reducing strength core stake, comprise cement mixing method pile body (1), it is characterized in that, at least one reducing strength core stake (2) is inserted with in described cement mixing method pile body (1), the sectional area of described reducing strength core stake (2) is diminished to bottom gradually by top, has some dowels (5) in described cement mixing method pile body (1).
2. the cement mixing method with the stake of reducing strength core according to claim 1, is characterized in that, described reducing strength core stake (2) is preformed pile, and described preformed pile is hollow pile or solid pile.
3. the cement mixing method with the stake of reducing strength core according to claim 2, it is characterized in that, the cross section of described preformed pile is square, H-shaped, triangle, circle, hexagon or octagon, the sectional area at described reducing strength core stake (2) top is 1:4-5 with the ratio of the sectional area of bottom, and the external surface of described reducing strength core stake (2) is smooth plane.
4. the cement mixing method with the stake of reducing strength core according to claim 1, it is characterized in that, the external surface of described reducing strength core stake (2) the axis along reducing strength core stake (2) is densely covered with step (6), and plane residing for described step (6) surface is vertical with the axial line of reducing strength core stake (2).
5. the cement mixing method with the stake of reducing strength core according to claim 1, it is characterized in that, the two ends of described reducing strength core stake (2) are provided with some attaching nuts (4), and the two ends of dowel (5) are fixedly connected with the attaching nut (4) at reducing strength core stake (2) two ends respectively.
6. the cement mixing method with the stake of reducing strength core according to claim 5, it is characterized in that, chuck is formed after described attaching nut (4) bottom reducing, rear formation boss is expanded at the two ends of described dowel (5), and described boss is with chuck snap-fit engagement thus dowel (5) is fixedly connected with attaching nut (4).
7. compressive pile according to claim 5, it is characterized in that, described attaching nut (4) bottom is provided with the cavity of taper, the tapered snap ring (9) be made up of at least two panels card (8) is provided with in cavity, card (8) inwall has concave/convex-shaped structure, and the end of dowel (5) to be placed in snap ring (9) and to be clamped by card (8) inwall.
8. compressive pile according to claim 7, it is characterized in that, described attaching nut (4) be positioned at snap ring (9) top inwall there is internal thread, attaching nut (4) bottom and be positioned at snap ring (9) below there is flange circle (10).
9. compressive pile according to claim 1, it is characterized in that, described pile body (1) two ends are respectively arranged with one piece of end plate (11) be fixedly connected with pile body (1), end plate (11) is provided with some taper fastener holes (12), the tapered snap ring (9) be made up of at least two panels card (8) is provided with in described taper fastener hole (12), card (8) inwall has concave/convex-shaped structure, and the end of dowel (5) to be placed in snap ring (9) and to be clamped by card (8) inwall.
10. compressive pile according to claim 9, it is characterized in that, described end plate (11) is provided with the T-shaped connecting hole of cross section (13), be connected with the fastener nut (14) that cross section is T-shaped in described connecting hole (13), in described fastener nut (14), there is taper fastener hole (12).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604543.9A CN105256794A (en) | 2015-09-21 | 2015-09-21 | Cement soil mixing pile with strong variable-diameter core piles |
| PCT/CN2016/000500 WO2017049809A1 (en) | 2015-09-21 | 2016-08-29 | Cement-soil mixing pile having stiffening core pile with variable diameter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510604543.9A CN105256794A (en) | 2015-09-21 | 2015-09-21 | Cement soil mixing pile with strong variable-diameter core piles |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105256794A true CN105256794A (en) | 2016-01-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510604543.9A Pending CN105256794A (en) | 2015-09-21 | 2015-09-21 | Cement soil mixing pile with strong variable-diameter core piles |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN105256794A (en) |
| WO (1) | WO2017049809A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105804062A (en) * | 2016-03-02 | 2016-07-27 | 广州市第四建筑工程有限公司 | Mixing rotary-jet concrete-embedded stiffening pile and construction method thereof |
| WO2017049809A1 (en) * | 2015-09-21 | 2017-03-30 | 周兆弟 | Cement-soil mixing pile having stiffening core pile with variable diameter |
| CN107642040A (en) * | 2017-08-17 | 2018-01-30 | 华东交通大学 | The construction method heavy stone used as an anchor of the hollow clump of piles anchorage of super-large diameter |
| CN110543734A (en) * | 2019-09-06 | 2019-12-06 | 山东省建筑科学研究院有限公司 | Variable-rigidity cement-soil core-insert combined pile and design method |
| CN111593727A (en) * | 2020-05-29 | 2020-08-28 | 山东省建筑科学研究院有限公司 | Variable cross-section cement-soil core-insert combined pile, construction device and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103741672B (en) * | 2014-01-24 | 2016-01-13 | 俞向阳 | A kind of pre-tensioning system centrifugal concrete pile and manufacture method with steel strand |
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| JPH08246448A (en) * | 1995-03-08 | 1996-09-24 | Nippon Hume Pipe Co Ltd | Friction pile |
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| CN103741672A (en) * | 2014-01-24 | 2014-04-23 | 俞向阳 | Pretensioned centrifugal concrete pile with steel stranded wires and manufacturing method |
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| CN205134309U (en) * | 2015-09-21 | 2016-04-06 | 周兆弟 | Cement mixing method with reducing strength core pile |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105256794A (en) * | 2015-09-21 | 2016-01-20 | 周兆弟 | Cement soil mixing pile with strong variable-diameter core piles |
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2015
- 2015-09-21 CN CN201510604543.9A patent/CN105256794A/en active Pending
-
2016
- 2016-08-29 WO PCT/CN2016/000500 patent/WO2017049809A1/en active Application Filing
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| JPH08246448A (en) * | 1995-03-08 | 1996-09-24 | Nippon Hume Pipe Co Ltd | Friction pile |
| CN200964590Y (en) * | 2005-09-21 | 2007-10-24 | 周兆弟 | Plugging-in type pipe connection fastener and preform |
| CN202543914U (en) * | 2012-04-28 | 2012-11-21 | 从卫民 | Uplift pile with prestress reinforced plastic rod |
| CN203475701U (en) * | 2013-05-10 | 2014-03-12 | 周兆弟 | Steel bar joint fastener of prestressed concrete member |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017049809A1 (en) * | 2015-09-21 | 2017-03-30 | 周兆弟 | Cement-soil mixing pile having stiffening core pile with variable diameter |
| CN105804062A (en) * | 2016-03-02 | 2016-07-27 | 广州市第四建筑工程有限公司 | Mixing rotary-jet concrete-embedded stiffening pile and construction method thereof |
| CN107642040A (en) * | 2017-08-17 | 2018-01-30 | 华东交通大学 | The construction method heavy stone used as an anchor of the hollow clump of piles anchorage of super-large diameter |
| CN110543734A (en) * | 2019-09-06 | 2019-12-06 | 山东省建筑科学研究院有限公司 | Variable-rigidity cement-soil core-insert combined pile and design method |
| CN111593727A (en) * | 2020-05-29 | 2020-08-28 | 山东省建筑科学研究院有限公司 | Variable cross-section cement-soil core-insert combined pile, construction device and method |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2017049809A1 (en) | 2017-03-30 |
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