CN207760848U - A kind of grouting component of composite foundation pile - Google Patents
A kind of grouting component of composite foundation pile Download PDFInfo
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- CN207760848U CN207760848U CN201820079703.1U CN201820079703U CN207760848U CN 207760848 U CN207760848 U CN 207760848U CN 201820079703 U CN201820079703 U CN 201820079703U CN 207760848 U CN207760848 U CN 207760848U
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Abstract
The utility model is related to a kind of grouting components of composite foundation pile, it include the prefabricated pile in ground, with the soil cement solidification layer for being coated on the prefabricated pile periphery, the soil cement solidification layer is mixed by cement and the soil body to be formed, wherein, Grouting Pipe is also set up on the prefabricated pile, the Grouting Pipe is used for the gap cement injection between the soil cement solidification layer and the prefabricated pile outer surface.When after scheduled curing time, by Grouting Pipe cement mortar is re-injected to the gap between the outer surface and soil cement of prefabricated pile, this so that the shrinkage joint due to being generated by contraction in soil cement process of setting is filled, ensure reliable contacts between soil cement and prefabricated pile, or the cement mortar by being subsequently perfused makes reliable contacts between soil cement and prefabricated pile, to ensure that the composite foundation pile has enough bearing capacity and withdrawal resistance, the construction quality hidden danger brought by shrinkage joint is eliminated.
Description
Technical field
The utility model is related to technical field of civil engineering, more particularly to the grouting component of a kind of composite foundation pile.
Background technology
Stir a kind of effective form that cement earth pile is current treatment of soft foundation deeply, be using cement as the host agent of curing agent,
Cement jet is entered using mixing pile machine and is sufficiently stirred with the soil body after the soil body, it is anti-that with soil a series of physical chemistry occurs for cement
It answers, weak soil is made to harden, in order to further enhance the deep bearing capacity for stirring cement earth pile, have also appeared a kind of composite foundation pile, this is multiple
It is to wait mixing by the stake holes of the prefabricated pile snubbing soil body and cement admixture after stirring cement earth pile deeply and completing drilling to close foundation pile
It closes and is formed by bonding course after the pile body periphery of prefabricated pile and bottom package cement and soil shear failure after object solidifies, this kind multiple
The bearing capacity for closing pile foundation is greatly improved.
But there is following technical problems for this kind of composite foundation pile：After the completion of construction, cement is mixed with the soil body and is formed by
Native stake will gradually condense, and the native stake in condensation process will will produce apparent contraction, and prefabricated pile is since intensity itself is higher, and
And prefabricated, therefore the shrinking percentage of prefabricated pile and spreading rate very little have been completed in factory, it can ignore substantially, this makes originally
Separation is produced between the native stake being close together and prefabricated pile.
It is well known that the bearing capacity of stake itself largely comes from the frictional force between pile body and its surrounding matrix, especially
It is the anti-pulling ability of stake, relys more on the frictional force between pile body and surrounding matrix, and when between native stake and prefabricated pile points
From later, the bearing capacity of composite foundation pile will substantially reduce, this can cause serious security risk to construction quality.
Therefore, the shrinkage joint between native stake and prefabricated pile in composite foundation pile how is eliminated, to ensure that composite foundation pile has
The technical issues of enough bearing capacities and withdrawal resistance are current those skilled in the art's urgent need to resolve.
Utility model content
In view of the above technical problems, the utility model provides a kind of grouting component of composite foundation pile, so as to eliminate multiple
The shrinkage joint between native stake and prefabricated pile in foundation pile is closed to ensure that composite foundation pile has enough bearing capacity and withdrawal resistance to disappear
Except security risk.
In order to achieve the above objectives, the grouting component of composite foundation pile provided by the utility model includes pre- in ground
Stake processed, and it is coated on the soil cement solidification layer of the prefabricated pile periphery, the soil cement solidification layer is stirred by cement and soil body mixing
Mix to be formed, wherein also set up Grouting Pipe on the prefabricated pile, the Grouting Pipe be used for the soil cement solidification layer with it is described pre-
Gap cement injection between stake outer surface processed.
Preferably, the prefabricated pile is solid core prefabricated pile or hollow prefabricated pile.
Preferably, the prefabricated pile is cross-section prefabricated pile or variable cross-section prefabricated pile.
Preferably, it is embedded with the Grouting Pipe in the prefabricated pile or the Grouting Pipe is arranged in the prefabricated pile
Outer surface.
Preferably, the Grouting Pipe is fixed on the outer surface of the prefabricated pile by pipeline buckle.
Preferably, the Grouting Pipe is arranged in a vertical direction, and in the vertical direction, is offered in the Grouting Pipe multiple
The grouting port being spaced apart.
Preferably, the spacing between two grouting ports of arbitrary neighborhood is equal, and is additionally provided with list in the grouting port
To conducting structure.
Preferably, the Grouting Pipe includes slip casting supervisor and slip casting branch pipe, and lateral arrangement is embedded in the prefabricated pile
One end of the slip casting branch pipe, the slip casting branch pipe is connected to the outer surface of the prefabricated pile, and what is be arranged in a vertical direction is described
Slip casting supervisor is connected to the other end of the slip casting branch pipe, wherein if the prefabricated pile is solid core prefabricated pile, the slip casting master
Pipe is embedded in the prefabricated pile；If the prefabricated pile is hollow pile, slip casting supervisor be embedded in the prefabricated pile or
It is threaded through in the mesoporous of the prefabricated pile.
Preferably, in the short transverse of the prefabricated pile, multiple slip casting branch pipes are intervally distributed with.
Preferably, the spacing between the slip casting branch pipe of arbitrary neighborhood two is equal, and is provided in the slip casting branch pipe
One-way conduction structure.
Include prefabricated pile and packet in ground in the grouting component of composite foundation pile disclosed in the utility model
Overlay on the soil cement solidification layer of prefabricated pile periphery, also set up Grouting Pipe on prefabricated pile, Grouting Pipe be used for soil cement solidification layer with
Gap cement injection between prefabricated pile outer surface, after scheduled curing time, by Grouting Pipe to outside prefabricated pile
Gap between surface and soil cement re-injects cement mortar, this makes due to being generated because of contraction in soil cement process of setting
Shrinkage joint is filled, it is ensured that reliable contacts between soil cement and prefabricated pile, or the cement mortar by being subsequently perfused make cement
Reliable contacts between soil and prefabricated pile are eliminated to ensure that the composite foundation pile has enough bearing capacity and withdrawal resistance because shrinking
The construction quality hidden danger stitched and brought.
Description of the drawings
Fig. 1 is formed by the structural schematic diagram of shrinkage joint between prefabricated pile and soil cement；
Fig. 2 is the schematic cross-sectional view of the grouting component of the composite foundation pile disclosed in first embodiment；
Fig. 3 is the partial enlarged view of part A in Fig. 2；
The status diagram of slip casting is carried out when Fig. 4 soil cements do not solidify to form shrinkage joint；
Fig. 5-Fig. 7 uses schematic top plan view when different prefabricated piles for the grouting component in first embodiment；
Fig. 8 is the schematic cross-sectional view of the grouting component of the composite foundation pile disclosed in second embodiment；
Fig. 9-Figure 11 uses schematic top plan view when different prefabricated piles for the grouting component in second embodiment；
Figure 12 is the schematic cross-sectional view of the grouting component of the composite foundation pile disclosed in 3rd embodiment；
Figure 13-Figure 15 uses schematic top plan view when different prefabricated piles for the grouting component in 3rd embodiment；
Figure 16 is the schematic cross-sectional view of the grouting component of the composite foundation pile disclosed in fourth embodiment；
Figure 17-Figure 19 uses schematic top plan view when different prefabricated piles for the grouting component in fourth embodiment；
Figure 20 is the schematic cross-sectional view of the grouting component of the composite foundation pile disclosed in the 5th embodiment；
Figure 21-Figure 23 uses schematic top plan view when different prefabricated piles for the grouting component in the 5th embodiment；
Figure 24 is the schematic cross-sectional view of the grouting component of the composite foundation pile disclosed in sixth embodiment；
Figure 25-Figure 27 uses schematic top plan view when different prefabricated piles for the grouting component in sixth embodiment；
Figure 28 is the reducing and expansion mouth structure schematic diagram that the Grouting Pipe of two adjacent sections prefabricated pile connects.
Wherein, 1 is soil cement, and 2 be prefabricated pile, and 3 be shrinkage joint, and 4 be Grouting Pipe, and 41 are responsible for for slip casting, and 42 be slip casting branch
Pipe, 5 be connecting cavity, and 6 be one-way conduction structure, and 7 be peripheral hardware pipeline, and 8 buckle for pipeline, and B is reducing and expansion mouth structure.
Specific implementation mode
The core of the utility model is to provide a kind of grouting component of composite foundation pile, so as to eliminate native in composite foundation pile
Shrinkage joint between stake and prefabricated pile ensures that composite foundation pile has enough bearing capacity and withdrawal resistance, eliminates security-hidden trouble.
In order to make those skilled in the art more fully understand the utility model, below in conjunction with the accompanying drawings and it is embodied
The utility model is described in further detail for mode.
Before being illustrated to grouting component disclosed in the utility model, first the forming method of composite foundation pile is carried out
It introduces：
In the forming method of composite foundation pile, include the following steps：
S1：Selected foundation pile position；
S2：The soil body is set to be mixed to form soil cement 1 with cement mixing (at selected foundation pile position) in selected location, using side
Spraying into the mode of cement mortar stirring after the mode of drilling side water-spray type slurry, or completion drilling again makes the soil body mix shape with cement mortar
At soil cement 1 (soil cement forms native stake after solidification), cement can adopt common silicate cement, and ratio of mud example preferably controls
In the range of 0.4~0.5, according to design requirement, the cement consumption of every meter of soil cement 1 is no less than 50kg；When jet cement, open
Slurry pump, by the stirring-head grout outlet of pipeline pumping cement mortar to stake machine, the drilling rod of stake machine is promoted while stirring after pulp, is carried
Lifting speed is 0.5~0.8m/min, so that cement mortar and the soil body is fully mixed and stirred, if necessary, should also be promoted in the drilling rod of stake machine
To ground, slurry pump is closed, so that drilling rod is repeated stirring and sinks, need to illustrate, the drilling in this step is mainly
Refer to towards earth drilling, soil cement is formed in hole；
S3：The tripping in prefabricated pile 2 into soil cement；
S4：Grout injection in shrinkage joint 3, after scheduled curing time, by soil cement be formed by native stake with it is pre-
The outer surface of stake processed will produce shrinkage joint 3, re-inject cement mortar into shrinkage joint 3 at this time.
After scheduled curing time, claimed technical solution is also to the outer surface of prefabricated pile in the utility model
Gap between soil cement 1 re-injects cement mortar, this makes the receipts due to being generated by contraction in 1 process of setting of soil cement
Contracting seam 3 is filled, it is ensured that reliable contacts between soil cement 1 and prefabricated pile 2, or the cement mortar by being subsequently perfused make cement
Reliable contacts between soil 1 and prefabricated pile 2 are eliminated to ensure that the composite foundation pile has enough bearing capacity and withdrawal resistance because receiving
Contract the construction quality hidden danger stitched 3 and brought.
It needs to illustrate, curing time is different according to the difference for the cement mortar for forming soil cement, therefore conserves
Time may be 5~10 days, it is also possible to be 10~15 days, be not specifically limited to curing time in the utility model.
It is had to when slip casting by scheduled curing time, the otherwise slip casting when soil cement does not solidify, cement mortar can be everywhere
Diffusion pollution surrounding soil, as shown in Figure 4.
The prefabricated pile 2 being lowered into soil cement can be that solid prefabricated pile is alternatively hollow preformed pile, and prefabricated pile 2 can
Think the prismatic prefabricated pile of entire body, or the changed variable cross-section prefabricated pile of area of section in the axial direction, this field skill
Art personnel are, it is understood that in order to ensure that cement mortar can thoroughly fill out the gap between prefabricated pile outer surface and soil cement
It is real, it carries out needing to reach preset pressure when grout pouring in step S4, according to the requirement of different engineerings, the preset pressure
It may change, to the preset pressure equally not restriction in the utility model.
Prefabricated pile 2 can be embedded with Grouting Pipe 4 in production, or at the construction field (site) tripping in prefabricated pile 2 when in prefabricated pile 2
Upper setting Grouting Pipe 4, will be in grout pouring to the gap between soil cement 1 and prefabricated pile 2 by Grouting Pipe 4.
If at the construction field (site) be arranged Grouting Pipe 4, need to be carried out in tripping in prefabricated pile 2, no matter prefabricated pile 2 be hollow pile or
Solid core stake, Grouting Pipe 4 may be provided on the outer surface of prefabricated pile, pass through the fixing pieces such as steel nail, iron wire, buckle and prefabricated pile 2
Fixed, Grouting Pipe 4 is distributed along vertical direction, in order to ensure the uniformity of slurrying and reduce grouting pressure, in the perpendicular of prefabricated pile 2
Histogram is upward, multiple grouting ports being spaced apart is offered in Grouting Pipe 4, it is preferred that the spacing between two neighboring grouting port
It is equal, and external mud enters in grouting pipe grouting pipe is caused to block in order to prevent, is additionally provided in grouting port unidirectional
Conducting structure 6 (such as check valve).
More preferably, multiple Grouting Pipes 4 are disposed in the circumferentially-spaced of prefabricated pile 2, this may further ensure that
The uniformity of slip casting in gap.
Grouting Pipe 4 can be a VERTICAL TUBE being arranged along 2 axis direction of prefabricated pile, and in addition to this, Grouting Pipe 4 can be with
It is made of slip casting supervisor 41 and slip casting branch pipe 42,42 lateral arrangement of slip casting branch pipe, slip casting branch pipe 42 should be embedded in prefabricated pile 2
It is interior, and one end of slip casting branch pipe 42 is connected to the outer surface of prefabricated pile 2, to inject cement mortar, slip casting supervisor into gap
41 are arranged in a vertical direction, and slip casting supervisor 41 is connected to the other end of slip casting branch pipe 42, so as to defeated into slip casting branch pipe 42
Enter cement mortar, when prefabricated pile 2 is solid core stake, slip casting supervisor 41 should also be as being embedded in prefabricated pile 2, when prefabricated pile 2 is hollow
When stake, slip casting supervisor 41 is embedded in prefabricated pile 2 or is threaded through at the construction field (site) in the mesoporous of prefabricated pile 2.
Certainly, in order to ensure the uniformity of grout pouring, in the short transverse of prefabricated pile 2, it should also be spaced apart
Have multiple slip casting branch pipes 42, the spacing between two slip casting branch pipes 42 of arbitrary neighborhood is equal, and in order to prevent external mud into
Entering in grouting pipe causes grouting pipe to block, and one-way conduction structure 6 is additionally provided in slip casting branch pipe 42, more preferably,
More slip casting supervisors 41 are also arranged at intervals in the circumferential direction of prefabricated pile 2.
In order to ensure the connection of Grouting Pipe 4 in two neighboring prefabricated pile 2,4 top of Grouting Pipe in each prefabricated pile 2 is also set
It is equipped with the connecting cavity 5 for being connected with the Grouting Pipe 4 in contiguous prefabricated stake 2；Or in two adjacent sections prefabricated pile 2, wherein one
Throat structure is set in a Grouting Pipe 4, flaring structure is provided on another, throat structure is inserted in flaring structure with reality
The connection of Grouting Pipe 4 in existing two adjacent sections prefabricated pile 2, as shown in Figure 24,28；Certainly, if installing Grouting Pipe at the construction field (site),
And the length of Grouting Pipe 4 is met the requirements, and also connecting cavity 5 can not be arranged at the top of Grouting Pipe 4.
To the grouting component of composite foundation pile disclosed in an embodiment of the present invention, below intend by six kinds of embodiments come
It is specifically described.
First embodiment：Please first refering to fig. 2 to Fig. 7, in the first embodiment, grouting component includes being located in ground
Shape is mixed by cement and the soil body in prefabricated pile 2 and the soil cement solidification layer for being coated on 2 periphery of prefabricated pile, soil cement solidification layer
At, and Grouting Pipe 4 is additionally provided on prefabricated pile 2, the Grouting Pipe 4 be used for soil cement solidification layer and 2 outer surface of prefabricated pile it
Between gap in grout injection, peripheral hardware pipeline 7 with pulper for being connected.
Prefabricated pile 2 is hollow pile, and Grouting Pipe 4 is embedded in prefabricated pile 2, in order to realize the note in two adjacent sections prefabricated pile 2
The connection for starching pipe 4 is provided with connecting cavity 5, as shown in Figures 2 and 3, the water flowed out out of grouting port at the top of prefabricated pile 2
In mud dispersed filler to the gap of each position, external mud, which enters in grouting pipe 4, in order to prevent causes grouting pipe 4 stifled
It fills in, one-way conduction structure 6 is provided at grout outlet, the cross section of hollow pile can be diversified forms, such as Fig. 5 to Fig. 7, hollow pile
Cross section can be round, rectangle or regular hexagon, and certainly, the cross-sectional shape of hollow pile can also be other shapes, empty
The concrete shape of core stake cross section does not influence for realizing the utility model, therefore to hollow pile in the present embodiment
Other cross-sectional shapes will not enumerate.
Second embodiment：Fig. 8 to Figure 11 is please referred to, difference lies in the Grouting Pipes 4 in the present embodiment with first embodiment
Positioned at the outer surface of prefabricated pile 2, therefore the Grouting Pipe 4 can be arranged at the construction field (site), at the construction field (site) will note by pipeline buckle 8
Slurry pipe 4 is fixed at the outer surface of prefabricated pile 2, and Grouting Pipe 4 is lowered into stake holes jointly with prefabricated pile 2, and peripheral hardware pipeline 7 is used
It is connected in pulper.
In a second embodiment, prefabricated pile 2 is hollow pile, and such as Fig. 9 to Figure 11, hollow pile cross section can be round, square
Shape or regular hexagon, certainly, the cross-sectional shape of hollow pile can also be other shapes, the concrete shape of hollow pile cross section
It is not influenced for realizing the utility model, therefore same to other cross-sectional shapes of hollow pile in the present embodiment
It will not enumerate.
3rd embodiment：2 to Figure 15 are please referred to Fig.1, difference lies in the Grouting Pipes in the present embodiment with second embodiment
4 specifically include slip casting supervisor 41 and slip casting branch pipe 42, and wherein slip casting branch pipe 42 is embedded in prefabricated pile 2, and is transversely distributed,
One end of slip casting branch pipe 42 passes to the outer surface of prefabricated pile 2, and slip casting supervisor 41 is arranged in the vertical direction, and slip casting supervisor 41
It is connected to the other end of slip casting branch pipe 42.Prefabricated pile 2 in the present embodiment is similarly hollow pile, and slip casting supervisor 41 is arranged pre-
In the mesoporous of stake 2 processed, as shown in figure 12, slip casting supervisor 41 can be equally arranged by pipeline buckle 8 prefabricated at the construction field (site)
It in the mesoporous of stake 2, is then lowered into soil cement jointly with prefabricated pile 2, peripheral hardware pipeline 7 with pulper for being connected.
In the third embodiment, hollow pile cross section can be round, rectangle or regular hexagon, in Figure 13 to Figure 15
Shown, certainly, the cross-sectional shape of hollow pile can also be other shapes, and the concrete shape of hollow pile cross section is for realizing this
It does not influence for utility model scheme, therefore other cross-sectional shapes of hollow pile is equally no longer arranged one by one in the present embodiment
It lifts.
Fourth embodiment：Please refer to Fig.1 6 to Figure 19, with first embodiment difference lies in：Prefabricated pile in the present embodiment
2 be solid core stake, and Grouting Pipe 4 specifically includes slip casting supervisor 41 and slip casting branch pipe 42, wherein slip casting branch pipe 42 are embedded in prefabricated pile 2
It is interior, and be transversely distributed, one end of slip casting branch pipe 42 passes to the outer surface of prefabricated pile, and slip casting supervisor 41 sets in the vertical direction
It sets, slip casting supervisor 41 is embedded in prefabricated pile 2 and is connected to the other end of slip casting branch pipe, and the top of slip casting supervisor 41 is provided with
It is connected for being responsible for 41 with the slip casting in contiguous prefabricated stake 2, or the connecting cavity 5 being connected with peripheral hardware pipeline 7.
In the fourth embodiment, solid core stake cross section can be round, rectangle or regular hexagon, in Figure 17 to Figure 19
Shown, certainly, the cross-sectional shape of solid pile can also be other shapes, and the concrete shape of solid core stake cross section is for realizing this
It does not influence for utility model scheme, therefore other cross-sectional shapes of solid core stake will not enumerate in the present embodiment.
5th embodiment：Please refer to Fig.2 0 to Figure 23, with second embodiment difference lies in：Prefabricated pile in the present embodiment
2 be solid core stake.
In the 5th embodiment, solid core stake cross section can be round, rectangle or regular hexagon, in Figure 21 to Figure 23
Shown, certainly, the cross-sectional shape of solid pile can also be other shapes, and the concrete shape of solid core stake cross section is for realizing this
It does not influence for utility model scheme, therefore other cross-sectional shapes of solid core stake will not enumerate in the present embodiment.
Sixth embodiment：4 to Figure 27 are please referred to Fig.2, difference lies in the prefabricated piles in the present embodiment with second embodiment
2 be variable cross-section hollow preformed pile.
In the sixth embodiment, hollow pile cross section can be round, rectangle or regular hexagon, in Figure 25 to Figure 27
Shown, certainly, the cross-sectional shape of hollow pile can also be other shapes, and the concrete shape of hollow pile cross section is for realizing this
It does not influence for utility model scheme, therefore other cross-sectional shapes of hollow pile is equally no longer arranged one by one in the present embodiment
It lifts.
The grouting component of composite foundation pile provided by the utility model is described in detail above.It is used herein
Specific case is expounded the principles of the present invention and embodiment, and the explanation of above example is only intended to help to manage
Solve the method and its core concept of the utility model.It should be pointed out that for those skilled in the art, not
Under the premise of being detached from the utility model principle, several improvements and modifications can be made to this utility model, these improve and repair
Decorations are also fallen into the protection domain of the utility model claims.
Claims (10)
1. a kind of grouting component of composite foundation pile, which is characterized in that include the prefabricated pile in ground, and be coated on described pre-
The soil cement solidification layer of stake periphery processed, the soil cement solidification layer is mixed by cement and the soil body to be formed, wherein described prefabricated
Grouting Pipe is also set up in stake, the Grouting Pipe is used for the gap between the soil cement solidification layer and the prefabricated pile outer surface
Cement injection.
2. the grouting component of composite foundation pile according to claim 1, which is characterized in that the prefabricated pile is solid core prefabricated pile
Or hollow prefabricated pile.
3. the grouting component of composite foundation pile according to claim 1, which is characterized in that the prefabricated pile is that cross-section is prefabricated
Stake or variable cross-section prefabricated pile.
4. the grouting component of composite foundation pile according to claim 1, which is characterized in that be embedded in the prefabricated pile described
Grouting Pipe or the Grouting Pipe are arranged in the outer surface of the prefabricated pile.
5. the grouting component of composite foundation pile according to claim 4, which is characterized in that the Grouting Pipe is buckled by pipeline
It is fixed on the outer surface of the prefabricated pile.
6. the grouting component of composite foundation pile according to claim 4, which is characterized in that the Grouting Pipe vertically cloth
It sets, and in the vertical direction, multiple grouting ports being spaced apart is offered in the Grouting Pipe.
7. the grouting component of composite foundation pile according to claim 6, which is characterized in that two grouting ports of arbitrary neighborhood
Between spacing it is equal, and one-way conduction structure is additionally provided in the grouting port.
8. the grouting component of composite foundation pile according to claim 1, which is characterized in that the Grouting Pipe includes slip casting supervisor
With slip casting branch pipe, the slip casting branch pipe of lateral arrangement is embedded in the prefabricated pile, one end of the slip casting branch pipe is connected to
The outer surface of the prefabricated pile, the slip casting supervisor being arranged in a vertical direction are connected to the other end of the slip casting branch pipe,
In, if the prefabricated pile is solid core prefabricated pile, the slip casting supervisor is embedded in the prefabricated pile；If the prefabricated pile is sky
Core stake, then the slip casting, which is responsible for, is embedded in the prefabricated pile or is threaded through in the mesoporous of the prefabricated pile.
9. the grouting component of composite foundation pile according to claim 8, which is characterized in that in the short transverse of the prefabricated pile
On, it is intervally distributed with multiple slip casting branch pipes.
10. the grouting component of composite foundation pile according to claim 9, which is characterized in that two slip castings of arbitrary neighborhood
Spacing between branch pipe is equal, and is provided with one-way conduction structure in the slip casting branch pipe.
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| CN201820079703.1U CN207760848U (en) | 2018-01-18 | 2018-01-18 | A kind of grouting component of composite foundation pile |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695242A (en) * | 2018-12-21 | 2019-04-30 | 兰州有色冶金设计研究院有限公司 | Eliminate the prefabricated pile and its construction method of breathing soil layer frictional force |
-
2018
- 2018-01-18 CN CN201820079703.1U patent/CN207760848U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109695242A (en) * | 2018-12-21 | 2019-04-30 | 兰州有色冶金设计研究院有限公司 | Eliminate the prefabricated pile and its construction method of breathing soil layer frictional force |
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