CN206956717U - Marine rock drilling strike-on type large diameter pile structure - Google Patents
Marine rock drilling strike-on type large diameter pile structure Download PDFInfo
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- CN206956717U CN206956717U CN201720595092.1U CN201720595092U CN206956717U CN 206956717 U CN206956717 U CN 206956717U CN 201720595092 U CN201720595092 U CN 201720595092U CN 206956717 U CN206956717 U CN 206956717U
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Abstract
It the utility model is related to a kind of marine rock drilling strike-on type large diameter pile structure.The purpose of this utility model is to provide a kind of marine rock drilling strike-on type large diameter pile structure simple in construction, easy for construction, to improve efficiency of construction, reduces construction cost.The technical solution of the utility model is：A kind of marine rock drilling strike-on type large diameter pile structure, the ground suitable for being from top to bottom followed successively by loose overlying soil, closely knit soil layer and lithosphere, ground are provided with the stake holes extended in lithosphere, steel-pipe pile are squeezed into stake holes；Stake holes is from top to bottom divided into the rock interval of the loose ground interval of corresponding loose overlying soil, the closely knit soil layer section of corresponding closely knit soil layer and corresponding lithosphere, for wherein loose ground interval to be formed after the steel pipe sunk pile, closely knit soil layer section and rock interval are to be formed using pile sinking after the steel-pipe pile of loose overlying soil creeps into row hole as construction passage to closely knit soil layer and lithosphere.The utility model is applied to offshore wind farm and other field of ocean engineering.
Description
Technical field
It the utility model is related to a kind of marine rock drilling strike-on type large diameter pile structure.Suitable for offshore wind farm and other oceans
Field of engineering technology.
Background technology
Single-pile foundation is a kind of most widely used structural shape in domestic and international offshore wind farm field, and single-pile foundation has structure
Simply, convenient, high efficient construction is implemented.With the Large scale construction of domestic offshore wind farm, in engineerings such as Fujian, Guangdong
Marine site complex geologic conditions, mud and sand silting depth is limited in the subsea strata of part, and bottom has weathered rock formation, and pile foundation is disposably beaten
Enter it is larger to projected depth difficulty, tradition merely using hammer piling method limit single-pile foundation the engineering marine site should
With.
For above-mentioned geological conditions, part engineering is using traditional high-rise pile cap rock-socketed pile basis or the embedding batholith of jacket
Plinth, but the embedding batholith plinth of high-rise pile cap, complicated construction technique, process is more, and efficiency is low, and basic overall cost is higher；Jacket
Foundation structure, because stake top is located at below the water surface, it is not easy to drilling construction.
The content of the invention
The technical problems to be solved in the utility model is：For above-mentioned problem, there is provided a kind of simple in construction, construction
Convenient marine rock drilling strike-on type large diameter pile structure, to improve efficiency of construction, reduce construction cost.
Technical scheme is used by the utility model：A kind of marine rock drilling strike-on type large diameter pile structure, suitable for by
The ground of loose overlying soil, closely knit soil layer and lithosphere is followed successively by under above, it is characterised in that：The ground is provided with extension
Stake holes in lithosphere, steel-pipe pile is squeezed into stake holes；
The stake holes is from top to bottom divided into the loose ground interval of corresponding loose overlying soil, corresponds to the close of closely knit soil layer
The rock interval of real soil layer section and corresponding lithosphere, wherein loose ground interval are described closely knit to be formed after the steel pipe sunk pile
Soil layer section and rock interval be using pile sinking in the steel-pipe pile of loose overlying soil be construction passage to closely knit soil layer and rock
Layer drilling row is formed behind hole.
The closely knit soil layer sector hole footpath of the stake holes is less than the stake footpath of the steel-pipe pile, and the lithosphere sector hole footpath of stake holes is slightly larger than
The stake footpath of steel-pipe pile.
The rock interval of the stake holes is perfused with underwater concrete, and the steel-pipe pile passes through underwater concrete and the rock of stake holes
Rock layers section is connected.
A kind of construction method of marine rock drilling strike-on type large diameter pile structure, it is characterised in that step is as follows：
1st, pile sinking is carried out to it by pile hammer at the top of steel-pipe pile, until steel-pipe pile lower end is supported in closely knit soil layer surface；
2nd, drilling equipment is set up at the top of steel-pipe pile, the embedding rock drilling machine drill bit of drilling equipment is by steel-pipe pile internal channel to steel
Bore operation is carried out in pipe pile and below stake bottom, until the design bottom elevation in lithosphere, boring aperture is less than steel-pipe pile
Stake footpath；Reaming is carried out to lithosphere internal drilling to the stake footpath for being slightly larger than steel-pipe pile；
3rd, drilling equipment, cleaning drilling are removed；
4th, the pouring underwater concrete in the drilling of lithosphere；
5th, pile sinking is carried out to it by pile hammer at the top of steel-pipe pile, until it is high that bottom is designed in steel-pipe pile lower end to lithosphere
Journey.
A kind of marine rock drilling strike-on type large diameter pile structure, suitable for being from top to bottom followed successively by loose overlying soil, closely knit
The ground of soil layer and lithosphere, it is characterised in that：The ground is provided with the stake holes extended in closely knit soil layer, is squeezed into stake holes
Steel-pipe pile；
The stake holes is from top to bottom divided into the loose ground interval of corresponding loose overlying soil and corresponds to closely knit soil layer
To be formed after the steel pipe sunk pile, the closely knit soil layer section is in loose with pile sinking for closely knit soil layer section, wherein loose ground interval
The steel-pipe pile of overlying soil is formed after being drilled for construction passage to closely knit soil layer.
The closely knit soil layer sector hole footpath of the stake holes is less than the stake footpath of the steel-pipe pile.
A kind of construction method of marine rock drilling strike-on type large diameter pile structure, it is characterised in that step is as follows：
1st, pile sinking is carried out to it by pile hammer at the top of steel-pipe pile, until steel-pipe pile lower end is supported in closely knit soil layer surface；
2nd, drilling equipment is set up at the top of steel-pipe pile, the embedding rock drilling machine drill bit of drilling equipment is by steel-pipe pile internal channel to steel
Bore operation is carried out in pipe pile and below stake bottom, until the design bottom elevation in closely knit soil layer, boring aperture are less than steel-pipe pile
Stake footpath；
3rd, drilling equipment, cleaning drilling are removed；
4th, pile sinking is carried out to it by pile hammer at the top of steel-pipe pile, until it is high that bottom is designed in steel-pipe pile lower end to closely knit soil layer
Journey.
The beneficial effects of the utility model are：Drilling equipment is directly erected at the top of steel-pipe pile by the utility model, with steel
Pile tube is rig supporting mechanism and drilling casing structure, reduces and sets up embedding rock platform construction process, shortens the construction period, is dropped
The expense of low embedding rock construction.Steel-pipe pile is supported in closely knit soil by pile sinking mode through loose overlying soil in the utility model
Layer, it itself can keep stable, the requirement of satisfaction erection drilling equipment of standing.The utility model structure type is simple, boring work
Measure small, effectively shorten construction period, substantially reduce project inputs.
Brief description of the drawings
Fig. 1 is the structural representation of embodiment 1.
Fig. 2~Fig. 4 is the work progress schematic diagram of embodiment 1.
Fig. 5 is the structural representation of embodiment 2.
Embodiment
Embodiment 1：As shown in figure 1, the present embodiment is marine rock drilling strike-on type large diameter pile structure, the structure be applied to by
The ground of loose overlying soil 9 (can drive piles), closely knit soil layer 10 (piling is difficult) and lithosphere 11, the ground are followed successively by under above
Geological conditions it is limited for mud and sand silting depth, pile foundation can squeeze into certain depth, but it is high to be disposably sink to design bottom
Journey.Stake holes 3 is provided with the present embodiment on ground, the design bottom elevation of the stake holes is located in lithosphere 11, the perfusion of the bottom of stake holes 3
There is underwater concrete 6, steel-pipe pile 1 is squeezed into stake holes 3 by pile hammer 4, the lower end of steel-pipe pile 1 is through underwater concrete 6 and rock
Layer 11 is connected.
Stake holes 3 is from top to bottom divided into loose ground interval 31 in the loose overlying soil 9, is located in the present embodiment
Closely knit soil layer section 32 in closely knit soil layer 10 and the rock interval 33 in lithosphere 11.Wherein loose ground interval 31 is steel pipe
Stake 1 is formed after the pile sinking of pile hammer 4 is supported in closely knit soil layer 10 in loose soil bed 9, closely knit soil layer section 32 and rock interval 33
It is that to be supported in the steel-pipe pile 1 of closely knit soil layer 10 with pile sinking posterior end be construction passage to the closely knit soil layer below the bottom of steel-pipe pile 1
10 and lithosphere 11 creep into row hole after formed.The closely knit aperture of soil layer section 32 of stake holes 3 is less than the stake of the steel-pipe pile 1 in this example
Footpath, the aperture of rock interval 33 of stake holes 3 are slightly larger than the stake footpath of steel-pipe pile 1.
The construction method of the present embodiment is as follows：
1st, it is identical with common foundation pile, pile sinking is carried out by pile hammer 4 at the top of steel-pipe pile 1, set without increasing other auxiliary
Standby or measure, but need in strict accordance with hammer standard control pile sinking is stopped, avoid by force pile sinking pile body is shone into damage, until steel-pipe pile 1
Lower end is supported in the closely knit surface of soil layer 10 (see Fig. 2), and the pile foundation first strike depth of steel-pipe pile 1 can meet the steady of drilling machine construction process
It is fixed；
2nd, set up rig as rig supporting construction and drilling casing structure with steel-pipe pile 1 at the top of steel-pipe pile 1 and set
Standby 5, the embedding rock drilling machine drill bit 5-1 of drilling equipment are by the internal channel of steel-pipe pile 1 to closely knit soil layer below in steel-pipe pile 1 and stake bottom
10 and lithosphere 11 carry out bore operation, until lithosphere 11 in design bottom elevation, boring aperture be less than steel-pipe pile 1 stake
Footpath, specific size can suitably be adjusted according to live drilling situation；The internal drilling of lithosphere 11 (the rock interval of stake holes) is entered
Row reaming is extremely slightly larger than the stake footpath of steel-pipe pile (see Fig. 3)；
3rd, drilling equipment 5, cleaning drilling are removed；
4th, the pouring underwater concrete 6 in the drilling of lithosphere 11, underwater concrete is slightly above the top surface of rock interval 33；
5th, the top of steel-pipe pile 1 carries out pile sinking by pile hammer 4, is designed until the lower end of steel-pipe pile 1 is sunk down into lithosphere 11
Bottom elevation (see Fig. 4).
Embodiment 2：As shown in figure 5, the present embodiment is marine rock drilling strike-on type large diameter pile structure, the structure be applied to by
The ground of loose overlying soil 9 (can drive piles), closely knit soil layer 10 (piling is difficult) and lithosphere 11, the ground are followed successively by under above
Geological conditions it is limited for mud and sand silting depth, pile foundation can squeeze into certain depth, but it is high to be disposably sink to design bottom
Journey.Stake holes 3 is provided with the present embodiment on ground, the design bottom elevation of the stake holes is located in closely knit soil layer 10, steel-pipe pile 1 is led to
Pile hammer 4 is crossed to squeeze into stake holes 3.
Stake holes 3 is from top to bottom divided into loose ground interval 31 in the loose overlying soil, is located in the present embodiment
The rock interval 33 of closely knit soil layer section 32 and corresponding lithosphere in closely knit soil layer.Wherein loose ground interval 31 is steel-pipe pile through beating
Pile monkey pile sinking is formed after being supported in closely knit soil layer in loose soil bed, closely knit soil layer section 32 be supported in pile sinking posterior end it is closely knit
The steel-pipe pile of soil layer is formed after creeping into row hole to the closely knit soil layer and lithosphere of steel-pipe pile bottom once for construction passage, in this example
The closely knit soil layer sector hole footpath of stake holes is less than the stake footpath of the steel-pipe pile.
The construction method of the present embodiment is as follows：
1st, it is identical with common foundation pile, pile sinking is carried out by pile hammer 4 at the top of steel-pipe pile 1, set without increasing other auxiliary
Standby or measure, but need in strict accordance with hammer standard control pile sinking is stopped, avoid by force pile sinking pile body is shone into damage, until under steel-pipe pile
End is supported in closely knit soil layer surface, and steel-pipe pile pile foundation first strike depth can meet the stabilization of drilling machine construction process；
2nd, set up rig as rig supporting construction and drilling casing structure with steel-pipe pile 1 at the top of steel-pipe pile 1 and set
Standby 5, the embedding rock drilling machine drill bit 5-1 of drilling equipment are by steel-pipe pile internal channel in steel-pipe pile stake and closely knit soil layer 10 below stake bottom
Bore operation is carried out, until the design bottom elevation in closely knit soil layer, boring aperture is less than the stake footpath of steel-pipe pile 1, and specific size can
According to live drilling situation, suitably adjusted；
3rd, drilling equipment 5, cleaning drilling are removed；
4th, the top of steel-pipe pile 1 carries out pile sinking by pile hammer 4, until the lower end of steel-pipe pile 1 sinks down into closely knit soil layer 10 and set
Count bottom elevation.
The utility model need to survey parameter over the ground and be analyzed in implementation process, deep to basic first strike by related software
Pile sinking feasibility is analyzed again after degree and borehole cleaning, and by numerical simulation or other means, is analyzed in boring procedure,
Under wave current load and rig vibration load action, behind basis+rig resistance to overturning, and drilling borehole cleaning, basis is vertically held
Loading capability.After drilling, strike-on can smooth pile sinking geological conditions, using the construction technology of embodiment 2；It is hard for that need to enter
Lithosphere, strike-on difficulty situation is still suffered from after drilling, the construction technology of embodiment 1 can be used.
Above-described embodiment and construction technology are mainly used in offshore wind farm single-pile foundation, but are not limited thereto, for sea
Other foundation structures involved by foreign engineering structure also can be designed and construct with technical solutions of the utility model.
Claims (5)
1. a kind of marine rock drilling strike-on type large diameter pile structure, suitable for being from top to bottom followed successively by loose overlying soil (9), closely knit
The ground of soil layer (10) and lithosphere (11), it is characterised in that：The ground is provided with the stake holes extended in lithosphere (11)
(3) steel-pipe pile (1), is squeezed into stake holes；
The stake holes (3) is from top to bottom divided into the loose ground interval (31) of corresponding loose overlying soil (9), corresponding closely knit soil
The closely knit soil layer section (32) of layer (10) and the rock interval (33) of corresponding lithosphere (11), wherein loose ground interval (31) is described
Formed after steel-pipe pile (1) pile sinking, the closely knit soil layer section (32) and rock interval (33) are in loose overlying soil (9) with pile sinking
The steel-pipe pile (1) be construction passage to being formed after closely knit soil layer (10) and lithosphere (11) drilling row hole.
2. marine rock drilling strike-on type large diameter pile structure according to claim 1, it is characterised in that：The stake holes (3)
Closely knit soil layer section (32) aperture is less than the stake footpath of the steel-pipe pile (1), and rock interval (33) aperture of stake holes is slightly larger than steel-pipe pile
(1) stake footpath.
3. marine rock drilling strike-on type large diameter pile structure according to claim 1 or 2, it is characterised in that：The stake holes (3)
Rock interval (33) be perfused with underwater concrete (6), the steel-pipe pile (1) passes through underwater concrete and the rock interval of stake holes
It is connected.
4. a kind of marine rock drilling strike-on type large diameter pile structure, suitable for being from top to bottom followed successively by loose overlying soil (9), closely knit
The ground of soil layer (10) and lithosphere (11), it is characterised in that：The ground is provided with the stake extended in closely knit soil layer (10)
Hole (3), steel-pipe pile (1) is squeezed into stake holes；
The stake holes (3) is from top to bottom divided into the loose ground interval (31) of corresponding loose overlying soil (9) and corresponded to closely knit
The closely knit soil layer section (32) of soil layer (10), wherein loose ground interval (31) are described closely knit to be formed after the steel-pipe pile (1) pile sinking
Soil layer section (32) be with pile sinking in the steel-pipe pile (1) of loose overlying soil (9) be construct passage closely knit soil layer is bored
Formed behind hole.
5. marine rock drilling strike-on type large diameter pile structure according to claim 4, it is characterised in that：The stake holes (3)
Closely knit soil layer sector hole footpath is less than the stake footpath of the steel-pipe pile (1).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720595092.1U CN206956717U (en) | 2017-05-25 | 2017-05-25 | Marine rock drilling strike-on type large diameter pile structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720595092.1U CN206956717U (en) | 2017-05-25 | 2017-05-25 | Marine rock drilling strike-on type large diameter pile structure |
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| Publication Number | Publication Date |
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| CN206956717U true CN206956717U (en) | 2018-02-02 |
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ID=61376204
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299632A (en) * | 2017-05-25 | 2017-10-27 | 中国电建集团华东勘测设计研究院有限公司 | Marine rock drilling strike-on type large diameter pile structure and construction method |
| CN108505534A (en) * | 2018-05-24 | 2018-09-07 | 中能电力科技开发有限公司 | A kind of embedding rock single pile construction method of offshore wind turbine base expanding and base expanding formula and system |
| CN115030213A (en) * | 2022-05-26 | 2022-09-09 | 上海勘测设计研究院有限公司 | Tool suitable for offshore wind power foundation pile and application method |
-
2017
- 2017-05-25 CN CN201720595092.1U patent/CN206956717U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107299632A (en) * | 2017-05-25 | 2017-10-27 | 中国电建集团华东勘测设计研究院有限公司 | Marine rock drilling strike-on type large diameter pile structure and construction method |
| CN108505534A (en) * | 2018-05-24 | 2018-09-07 | 中能电力科技开发有限公司 | A kind of embedding rock single pile construction method of offshore wind turbine base expanding and base expanding formula and system |
| CN115030213A (en) * | 2022-05-26 | 2022-09-09 | 上海勘测设计研究院有限公司 | Tool suitable for offshore wind power foundation pile and application method |
| CN115030213B (en) * | 2022-05-26 | 2023-04-11 | 上海勘测设计研究院有限公司 | Tool suitable for offshore wind power foundation pile and application method |
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