CN208685601U - Compound expanding anti-floating steel anchor rod - Google Patents
Compound expanding anti-floating steel anchor rod Download PDFInfo
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- CN208685601U CN208685601U CN201821180554.4U CN201821180554U CN208685601U CN 208685601 U CN208685601 U CN 208685601U CN 201821180554 U CN201821180554 U CN 201821180554U CN 208685601 U CN208685601 U CN 208685601U
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- anchor pole
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Abstract
The utility model relates to construction of underground structure fields, disclose a kind of compound expanding anti-floating steel anchor rod, including cement soil layer and column anchor pole, the anchor pole outer wall is fixed with several outwardly extending dowels, the dowel is arranged along anchor pole axis direction, the cement soil layer includes cylinder and diameter-changing body, and the diameter of the diameter-changing body is greater than the diameter of cylinder, and the diameter-changing body is integrally connected along the axis direction of cylinder with cylinder.It is constructed by the variable diameter of cement soil layer, coat weights are pressed on diameter-changing body, can give full play to the intensity of anchor pole and soil layer, substantially increase the withdrawal resistance of compound expanding anti-floating steel anchor rod.Anchor pole is equipped with several dowels, and dowel is stretched out from the surface of anchor pole to be located in cement soil layer, increases the bonding strength of anchor pole and cement soil layer, improves the globality of the two.When rockbolt stress floats, dowel and cement soil layer are contradicted, and cement soil layer prevents anchor pole from floating by dowel, to improve anti-floating effect.
Description
Technical field
The utility model relates to construction of underground structure field, in particular to a kind of compound expanding anti-floating steel anchor rod.
Background technique
With a large amount of appearance of underground engineering, since underground water generates the uplift pressure upward to underground engineering, basic is anti-
Floating influence is also increasingly taken seriously, and it is anti-to meet building to generally use two kinds of technical measures of uplift pile or anti-float anchor rod at present
Floating safety.
Notification number is that the Chinese patent of CN206581264U discloses a kind of variable diameter multinode whirl spraying anti-float anchor rod, including by
Rotary jetting apparatus whirl spraying forms and is located at the whirl spraying pile body in the pore-forming of ground, is provided with anchor structure in rotary churning pile body, anchor structure
Concrete layer is filled between internal and anchor structure and ground pore-forming, concrete layer includes successively alternate from bottom to up
The cross section of first concrete layer and the second concrete layer, the first concrete layer and the second concrete layer is rounded, and first is mixed
The outer diameter of solidifying soil layer is greater than the outer diameter of the second concrete layer.
When in use, when anchor structure stress is floated upwards, anchor pole is by between anchor pole and concrete layer for above-mentioned anti-float anchor rod
Friction power limit realize anti-floating.But anchor structure is directly threaded through in concrete layer, contact of the anchor structure with concrete layer
Face is relatively smooth, and friction is small between anchor structure and concrete layer, and anti-floating effect is poor.
Utility model content
The purpose of the utility model is to provide a kind of compound expanding anti-floating steel anchor rods, have the advantages that anti-floating effect is preferable.
The above-mentioned technical purpose of the utility model has the technical scheme that
A kind of compound expanding anti-floating steel anchor rod, including cement soil layer and column anchor pole, the anchor pole outer wall are fixed with several
Outwardly extending dowel, the dowel are arranged along anchor pole axis direction, and the cement soil layer includes cylinder and diameter-changing body, institute
The diameter for stating diameter-changing body is greater than the diameter of cylinder, and the diameter-changing body is integrally connected along the axis direction of cylinder with cylinder.
By using above-mentioned technical proposal, cement soil layer is located in ground to be combined with the soil layer in ground, cement soil layer
It is significantly larger than the adhesion strength of soil layer and anchor pole with the adhesion strength of anchor pole, is constructed by the variable diameter of cement soil layer, coat weights
It is pressed on diameter-changing body, the intensity of anchor pole and soil layer can be given full play to, substantially increase the anti-of compound expanding anti-floating steel anchor rod
Pull out force.Anchor pole is equipped with several dowels, and dowel is stretched out from the surface of anchor pole to be located in cement soil layer, increases anchor pole and cement
The bonding strength of soil layer improves the globality of the two.When rockbolt stress floats, dowel and cement soil layer are contradicted, cement soil layer
Anchor pole is prevented to float by dowel, to improve anti-floating effect.
Further, the dowel is obliquely installed in reversed acanthoid on anchor pole, and the lower end of the dowel and anchor pole are solid
Fixed to be connected, the upper end of the dowel is tilted towards far from anchor pole direction.
By using above-mentioned technical proposal, when rockbolt stress floats, dowel in cement soil layer, is connected in reversed acanthoid
Frictional force between muscle and cement soil layer is larger, and anti-floating is preferable.
Further, the dowel is set as sheet.
By using above-mentioned technical proposal, the contact area of dowel and cement soil layer is larger, cement soil layer and anchor pole
Bonding strength is higher, and cement soil layer is bigger to resistance provided by dowel, and anti-floating effect is more preferable.
Further, several slurry holes excessively are offered on the dowel.
By using above-mentioned technical proposal, when being inserted into cement soil layer, dowel is gradually inserted in cement soil layer anchor pole, water
Soil penetrates between two dowels from slurry hole is crossed, and is bonded with the outer wall of anchor pole.On the one hand the setting for crossing slurry hole increases connection
The contact area of muscle and cement soil layer improves anti-floating；On the other hand, the insertion of anchor pole is convenient in the setting for crossing slurry hole, guarantees water
The outer wall of dirt bed and anchor pole fits, and guarantees the contact area of anchor pole and cement soil layer, improves anti-floating.
Further, the dowel is divided into several layers group, is equipped with several dowels in sustained height in every layer of group,
Several layers group is along anchor pole axis directional spreding.
By using above-mentioned technical proposal, dowel is uniformly arranged on anchor pole by group setting, dowel, dowel and water
The contact area of dirt bed is larger, and anti-floating effect is preferable.
Further, the dowel in adjacent two layers group is staggered.
By using above-mentioned technical proposal, during insertion, neighbouring dowel offsets one from another anchor pole, facilitates water
Dirt bed wraps up anchor pole comprehensively, guarantees the contact area of anchor pole and cement soil layer, improves anti-floating.
Further, the anchor surface is equipped with several protrusions.
By using above-mentioned technical proposal, the protrusion of anchor surface makes anchor surface uneven.To increase anchor pole
With the contact area of cement soil layer, the frictional force between cement soil layer and anchor pole is improved, improves anti-floating.
Further, the lower end of the anchor pole is equipped with the insertion end of cone cell.
By using above-mentioned technical proposal, the insertion end of cone cell is convenient for the insertion of anchor pole.
In conclusion the utility model has the following beneficial effects:
1. passing through the setting of diameter-changing body and dowel, dowel increases the contact area of anchor pole and cement soil layer, enhancing two
Frictional force between person, diameter-changing body increase the contact area of cement soil layer and soil layer, increase frictional force between the two, to mention
The anti-floating of high anchor pole；
2. passing through the setting of sheet dowel, the contact area of dowel and cement soil layer is larger, cement soil layer and anchor pole
Bonding strength it is higher, cement soil layer is bigger to resistance provided by dowel, and anti-floating effect is more preferable.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of embodiment；
Fig. 2 is the structural schematic diagram of anchor pole in embodiment.
In figure, 1, cement soil layer；11, cylinder；12, diameter-changing body；2, anchor pole；21, raised；22, insertion end；3, dowel；
31, slurry hole is crossed.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
Wherein identical components are presented with like reference characters.It should be noted that word used in the following description
Language "front", "rear", "left", "right", "up" and "down" refer to the direction in attached drawing, word " bottom surface " and " top surface ", "inner" and
"outside" refers respectively to the direction towards or away from geometric center of specific component.
Embodiment:
A kind of compound expanding anti-floating steel anchor rod, such as Fig. 1, including cement soil layer 1 and anchor pole 2.Cement soil layer 1 is inserted in vertically
In ground, cement soil layer 1 is contacted with the soil layer in ground.Anchor pole 2 is inserted into cement soil layer 1, anchor pole 2 and 1 phase knot of cement soil layer
It closes, improves anti-floating.
Such as Fig. 1, cement soil layer 1 includes cylinder 11 and diameter-changing body 12.Cylinder 11 diametrically under it is equal, diameter-changing body 12 it is straight
Diameter is greater than the diameter of cylinder 11.Diameter-changing body 12 and cylinder 11 are wholely set.Diameter-changing body 12 is uniformly arranged along 11 axis direction of cylinder,
The diameter of diameter-changing body 12 can be different, can also be identical.By the expanding construction of soil cement, coat weights are pressed in diameter-changing body 12
On, the intensity of anchor pole 2 and soil layer can be given full play to, the withdrawal resistance of compound expanding anti-floating steel anchor rod 2 is substantially increased.
Such as Fig. 1, anchor pole 2 is that steel column is inserted into cement soil layer 1, and the lower end of anchor pole 2 is equipped with the insertion end 22 of cone cell, anchor pole 2
In insertion process, friction is small with cement soil layer 1 for anchor pole 2, and anchor pole 2 is inserted into more convenient.
Such as Fig. 2,2 surface of anchor pole is uniformly provided with several raised 21, and protrusion 21 makes anchor pole 2 form rough surface.It is convex
Play 21 and increase anchor pole 2 and cement soil layer 1(is shown in Fig. 1) contact area, improve anchor pole 2 and cement soil layer 1(be shown in Fig. 1) between
Frictional force improves anti-floating effect.
Such as Fig. 2, the outer wall of anchor pole 2 is equipped with the dowel 3 of several sheets, and dowel 3 protrudes into cement soil layer 1(and sees Fig. 1)
In.Dowel 3 is shown in Fig. 1 with cement soil layer 1() contact area it is larger, increase anchor pole 2 and cement soil layer 1(and see Fig. 1) connection
Intensity improves the globality of the two.When 2 stress of anchor pole floats, dowel 3 and cement soil layer 1(are shown in Fig. 1) it contradicts, cement soil layer 1
(see figure 1) prevents anchor pole 2 from floating by dowel 3, to improve anti-floating effect.
Such as Fig. 2, dowel 3 divides for several layers group, is equipped with several dowels 3 in sustained height in every layer of group, several
Layer group is distributed along 2 axis direction of anchor pole.Dowel 3 is uniformly distributed on anchor pole 2, and dowel 3 and cement soil layer 1(are shown in Fig. 1)
Contact area is larger, and anti-floating effect is preferable.
Such as Fig. 2, dowel 3 is staggered in adjacent two layers group.Anchor pole 2 is inserted into cement soil layer 1(and sees Fig. 1) when, dowel 3
It is staggered, sees Fig. 1 convenient for cement soil layer 1() it is filled between two dowels 3, to guarantee that cement soil layer 1(is shown in Fig. 1) and anchor
The contact area of bar 2, enhancing anchor pole 2 and cement soil layer 1(see Fig. 1) bonding strength, improve anchor pole 2 anti-floating.
Such as Fig. 2, is offered on dowel 3 and several cross slurry holes 31.Anchor pole 2 is shown in Fig. 1 in insertion cement soil layer 1() when, connection
Muscle 3 is gradually inserted cement soil layer 1(and sees Fig. 1) in, soil cement penetrates between two dowels 3 from slurry hole 31 is crossed, with anchor pole 2
Outer wall fitting.On the one hand the setting for crossing slurry hole 31 increases dowel 3 and cement soil layer 1(and sees Fig. 1) contact area, improve anti-floating
Property；On the other hand, the insertion of anchor pole 2 is convenient in the setting for crossing slurry hole 31, guarantees that cement soil layer 1(is shown in Fig. 1) outer wall phase with anchor pole 2
Fitting guarantees that anchor pole 2 and cement soil layer 1(are shown in Fig. 1) contact area, improve anti-floating.
Such as Fig. 2, dowel 3 is obliquely installed in reversed acanthoid on anchor pole 2, and lower end and the anchor pole 2 of dowel 3 are fixedly linked,
The upper end of dowel 3 is tilted towards far from 2 direction of anchor pole.When 2 stress of anchor pole floats, dowel 3 is embedded in cement soil layer 1 in reversed acanthoid
In (see figure 1), dowel 3 and cement soil layer 1(are shown in Fig. 1) between frictional force it is larger, anti-floating is preferable.
Specific implementation process: 1, the production of anchor pole 2: it is 12.5m, lower section 6.0m that anchor pole 2, which makes length, and upper section is
6.5m is welded to connect, dowel 3 is welded on the outer wall of anchor pole 2；
2, when earth excavation is to the bottom of foundation, 2 line setting of anti-float anchor rod；
3, using the construction soil cement expanding stake of crawler type jet grouting pile driving machine, 12.0m in soil is pierced, high-pressure injection pump is started
Constructing, end is expanding, and grouting pressure 30MPa, the diameter D700 of cement earth pile, drill bit promote speed 0.2m/min；
4, after drill bit promotes 1.0m, grouting pressure is adjusted to 20MPa, the diameter D400 of cement earth pile, and drill bit promotes speed
0.3m/min；
5, after drill bit promotes 6.0m, grouting pressure is adjusted to 30MPa, the expanding cement earth pile in construction middle part, and diameter D700 is bored
Head promotes speed 0.2m/min；
6, after drill bit promotes 7.0m, grouting pressure is adjusted to 20MPa, the diameter D400 of cement earth pile, and drill bit promotes speed
0.3m/min, until expanding soil cement is completed；
7, steel anchor rod 2 is lifted by crane using digging machine, and is pressed into depth of the anchor pole 2 to 12.0m, anchor at cement earth pile center by root
It emerges at the top of bar 2 ground 50cm；
8, place cleaning binds reinforcement foundation and pours base concrete, and construction is completed.
This specific embodiment is only the explanation to the utility model, is not limitations of the present invention, ability
Field technique personnel can according to need the modification that not creative contribution is made to the present embodiment after reading this specification, but
As long as all by the protection of Patent Law in the scope of the claims of the utility model.
Claims (8)
1. a kind of compound expanding anti-floating steel anchor rod, including cement soil layer (1) and column anchor pole (2), it is characterised in that: the anchor pole
(2) outer wall is fixed with several outwardly extending dowels (3), and the dowel (3) is arranged along anchor pole (2) axis direction, described
Cement soil layer (1) includes cylinder (11) and diameter-changing body (12), and the diameter of the diameter-changing body (12) is greater than the diameter of cylinder (11), institute
The axis direction that diameter-changing body (12) is stated along cylinder (11) is connected with cylinder (11).
2. compound expanding anti-floating steel anchor rod according to claim 1, it is characterised in that: the dowel (3) is in reversed acanthoid
It is obliquely installed on anchor pole (2), lower end and the anchor pole (2) of the dowel (3) are fixedly linked, the upper end of the dowel (3)
It is tilted towards far from anchor pole (2) direction.
3. compound expanding anti-floating steel anchor rod according to claim 1, it is characterised in that: the dowel (3) is set as sheet.
4. compound expanding anti-floating steel anchor rod according to claim 3, it is characterised in that: offered on the dowel (3)
It is several to cross slurry hole (31).
5. compound expanding anti-floating steel anchor rod according to claim 1, it is characterised in that: the dowel (3) is divided into several
Layer group, every layer of group is interior to be equipped with several dowels (3) in sustained height, and several layers group is distributed along anchor pole (2) axis direction.
6. compound expanding anti-floating steel anchor rod according to claim 5, it is characterised in that: the dowel in adjacent two layers group
(3) it is staggered.
7. compound expanding anti-floating steel anchor rod according to claim 1, it is characterised in that: the anchor pole (2) is if surface is equipped with
Dry protrusion (21).
8. compound expanding anti-floating steel anchor rod according to claim 1, it is characterised in that: the lower end of the anchor pole (2) is equipped with
The insertion end (22) of cone cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821180554.4U CN208685601U (en) | 2018-07-24 | 2018-07-24 | Compound expanding anti-floating steel anchor rod |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821180554.4U CN208685601U (en) | 2018-07-24 | 2018-07-24 | Compound expanding anti-floating steel anchor rod |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208685601U true CN208685601U (en) | 2019-04-02 |
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ID=65882171
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821180554.4U Active CN208685601U (en) | 2018-07-24 | 2018-07-24 | Compound expanding anti-floating steel anchor rod |
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| CN (1) | CN208685601U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922043A (en) * | 2021-02-01 | 2021-06-08 | 浙江工业大学 | Tension-compression composite anti-floating anchor rod |
-
2018
- 2018-07-24 CN CN201821180554.4U patent/CN208685601U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112922043A (en) * | 2021-02-01 | 2021-06-08 | 浙江工业大学 | Tension-compression composite anti-floating anchor rod |
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