CN104389305B - A kind of back-up sand bamboo joint pile and construction method thereof - Google Patents
A kind of back-up sand bamboo joint pile and construction method thereof Download PDFInfo
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- CN104389305B CN104389305B CN201410653595.0A CN201410653595A CN104389305B CN 104389305 B CN104389305 B CN 104389305B CN 201410653595 A CN201410653595 A CN 201410653595A CN 104389305 B CN104389305 B CN 104389305B
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- 235000017166 Bambusa arundinacea Nutrition 0.000 title claims abstract description 80
- 235000017491 Bambusa tulda Nutrition 0.000 title claims abstract description 80
- 241001330002 Bambuseae Species 0.000 title claims abstract description 80
- 235000015334 Phyllostachys viridis Nutrition 0.000 title claims abstract description 80
- 239000011425 bamboo Substances 0.000 title claims abstract description 80
- 238000010276 construction Methods 0.000 title claims abstract description 33
- 239000004576 sand Substances 0.000 title claims abstract description 30
- 239000002689 soil Substances 0.000 claims abstract description 49
- 239000000463 material Substances 0.000 claims abstract description 43
- 238000003860 storage Methods 0.000 claims abstract description 41
- 239000000945 filler Substances 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 19
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 238000000465 moulding Methods 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 3
- 238000000151 deposition Methods 0.000 claims description 3
- 239000004927 clay Substances 0.000 abstract description 9
- 239000011148 porous material Substances 0.000 abstract description 5
- 238000007596 consolidation process Methods 0.000 abstract description 4
- 239000006185 dispersion Substances 0.000 abstract description 4
- 238000012856 packing Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010923 batch production Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 229920006395 saturated elastomer Polymers 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000005056 compaction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- -1 more piece Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 238000009628 steelmaking Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
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
- E02D5/24—Prefabricated piles
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D3/00—Improving or preserving soil or rock, e.g. preserving permafrost soil
- E02D3/02—Improving by compacting
- E02D3/08—Improving by compacting by inserting stones or lost bodies, e.g. compaction piles
-
- 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
-
- 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
- E02D5/52—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments
- E02D5/523—Piles composed of separable parts, e.g. telescopic tubes ; Piles composed of segments composed of segments
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D7/00—Methods or apparatus for placing sheet pile bulkheads, piles, mouldpipes, or other moulds
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D2200/00—Geometrical or physical properties
- E02D2200/16—Shapes
Landscapes
- Engineering & Computer Science (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Paleontology (AREA)
- Civil Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Agronomy & Crop Science (AREA)
- Environmental & Geological Engineering (AREA)
- Soil Sciences (AREA)
- Piles And Underground Anchors (AREA)
Abstract
The invention discloses a kind of back-up sand bamboo joint pile and construction method thereof, back-up sand bamboo joint pile is connected pile sinking in a joint manner by more piece and forms to the bamboo joint pile in soil layer and pile tube and sandstone filler.Its construction method is: centered by stake position, arrange on ground and deposit the material storage tube of sandstone filler, after bamboo joint pile or pile tube are attached, by stake machine stake are squeezed into or be pressed in soil layer, rely on bamboo joint pile or the pile tube frictional force to sandstone filler, by sandstone filling packing between stake and pile soil horizon.The present invention can complete back-up sand construction fast, easily, pile quality and durability are reliable, can promote the super quiet pore pressure rapid dispersion produced during the traditional method construction prefabricated pile of soft clay area, accelerate foundation soil consolidation, improve the side friction of soil around pile, and reduce the final settlement of building.
Description
Technical field
The present invention relates to piling Technology field, particularly relate to a kind of construction of prefabricated piles technology, a kind of back-up sand bamboo joint pile and construction method thereof.
Background technology
At present prefabricated pile all uses batch production to make, and the prefabricated pile that batch production makes has the advantages that steady quality, pile shaft material intensity height and cost are relatively low, and prefabricated pile is in the important part of construction project pile foundation market share.Tradition prefabricated pile has a wide range of applications in coastal soft clay area, and the clay distribution feature of soft clay area is that overlying Soft Soil Layer is thicker, and supporting course is relatively deep, and foundation soil water content is high, and bearing capacity is relatively low.Thus, in order to reach design require bearing capacity ability, generally require use increase considerably stake long or increase stake footpath mode realize.Under this kind of foundation soil condition and stress condition, the bearing capacity that pile soil horizon is provided that is relatively low, and bearing capacity of single pile is low, and pile shaft material intensity is not also utilized effectively.Tradition prefabricated pile, when constructing in soft clay area, owing to having significant soil compaction effect, causes excess pore water pressure to steeply rise, and dissipating slowly, the shearing strength of the soil body reduces, and the most easily deforms, if it is improper to control when construction, easily surrounding building and stake itself are caused damage.
The most promote saturated soft soil draining, the method improving bearing capacity by the back-up sand of stake week, it is broadly divided into two classes, one class is the method using steel pile casting, steel pile casting is sunk in soil, being taken out by the soil body between precast pile or cast-in-place pile body and casing, fill such as the inserts such as sandstone in the space between pile body and casing, such method needs sink to sleeve pipe and fetch earth, work progress is loaded down with trivial details, and efficiency of construction is the most relatively low；During sandstone band is buried by the another kind of prefabricated pile for employing band pile section; but this pile section is for using steel prefabricated; connected with the pile tube waiting external diameter by certain method; forming the pile body structure of band pile section, but the connection of this kind of method pile section and pile body is wasted time and energy, cost is higher; and quality of connection is difficult to ensure that; meanwhile, the ring of steel making and attachment structure unprotect layer, durability is difficult to ensure that.
Summary of the invention
The technical problem to be solved is for above-mentioned prior art present situation, and provide and can complete back-up sand construction fast, easily, pile quality and durability be reliable and the super quiet pore pressure rapid dispersion that produces during can promote soft clay area traditional method construction prefabricated pile, accelerate foundation soil consolidation, improve the side friction of soil around pile, reduce a kind of back-up sand bamboo joint pile and the construction method thereof of the final settlement of building.
The present invention solves the technical scheme that above-mentioned technical problem used: a kind of back-up sand bamboo joint pile, pile sinking is connected in a joint manner to the bamboo joint pile in soil layer and pile tube and sandstone filler including more piece, bamboo joint pile and pile tube are the prefabricated pile of the molding that is prefabricated in the factory, and being shaped with at equal intervals on the pile body of bamboo joint pile around protruding ring, sandstone filler is by passing through pile body when bamboo joint pile or pile tube pile sinking to its frictional force band underground layer medium ring produced around being filled between pile body and pile soil horizon.
For optimizing technique scheme, the measure taked also includes:
The slub space of above-mentioned bamboo joint pile is 50cm to 200cm.
The external diameter of above-mentioned bamboo joint pile ring is than the big 5cm to 20cm of external diameter of non-ring part pile body.
Above-mentioned bamboo joint pile and the compound mode of pile tube are that bottom stake, first segment is bamboo joint pile, and remainder is bamboo joint pile or pile tube.
Present invention also offers the construction method of a kind of back-up sand bamboo joint pile, the method comprises the following steps successively:
A), centered by stake position, the material storage tube depositing sandstone filler is set at ground, in material storage tube, is pre-filled with sandstone filler；
B), sling first segment bamboo joint pile, it is located at stake position, by stake machine bamboo joint pile squeezed into or be pressed in soil layer, by rubbing action and the interlocking of bamboo joint pile, sandstone filler is brought in pile soil horizon, make sandstone packing ring around being filled between pile body and pile soil horizon, be supplemented in time in material storage tube during sandstone filler lazy weight；
D), slinging, another saves bamboo joint pile or pile tube, after connecting with first segment bamboo joint pile, squeezed into or be pressed into by stake machine in soil layer, by the rubbing action of bamboo joint pile and the rubbing action of interlocking or pile tube, sandstone filler is brought in pile soil horizon, make sandstone packing ring around being filled between pile body and pile soil horizon, be supplemented in time in material storage tube during sandstone filler lazy weight；
E), repeat step d process, until pile sinking is complete.
Above-mentioned material storage tube is the steel cylinder with upper and lower both ends open.
The profile of above-mentioned material storage tube includes column type or funnel type.
The height of above-mentioned material storage tube is 50cm to 120cm.
The profile of above-mentioned material storage tube is column type, the internal diameter 30cm to 80cm bigger than the diameter of pile body of material storage tube.
The profile of above-mentioned material storage tube is down funnel type, the internal diameter 10cm to 40cm bigger than the diameter of pile body of material storage tube end opening, the internal diameter 30cm to 100cm bigger than the diameter of pile body that material storage tube is suitable for reading.
Compared with prior art, the present invention includes that more piece connects pile sinking in a joint manner to the bamboo joint pile in soil layer and pile tube and sandstone filler, bamboo joint pile and pile tube are the prefabricated pile of the molding that is prefabricated in the factory, and being shaped with at equal intervals on the pile body of bamboo joint pile around protruding ring, sandstone filler is by passing through pile body when bamboo joint pile or pile tube pile sinking to its frictional force band underground layer medium ring produced around being filled between pile body and pile soil horizon.It is an advantage of the current invention that: pile body ring is prefabricated, there is not pile section and pile body quality of connection is unstable and the problem of poor durability；The fillers such as sandstone get final product in band underground layer by the interlocking of ring etc. in pile driving process, are filled in stake week, and work progress is convenient.
Accompanying drawing explanation
Fig. 1 is view during back-up sand bamboo joint pile of the present invention construction；
Fig. 2 is one of final effect schematic diagram of back-up sand bamboo joint pile of the present invention；
Fig. 3 is the two of the final effect schematic diagram of back-up sand bamboo joint pile of the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in further detail.
Fig. 1 to Fig. 3 is the structural representation of the present invention.
Reference therein is: bamboo joint pile 1, ring 11, pile tube 2, sandstone filler 3, material storage tube 4.
As shown in Figure 1 to Figure 3, a kind of back-up sand bamboo joint pile of the present invention, pile sinking is connected in a joint manner to the bamboo joint pile 1 in soil layer and pile tube 2 and sandstone filler 3 including more piece, bamboo joint pile 1 and pile tube 2 are the prefabricated pile of the molding that is prefabricated in the factory, and being shaped with at equal intervals on the pile body of bamboo joint pile 1 around protruding ring 11, sandstone filler 3 is by passing through pile body when bamboo joint pile 1 or pile tube 2 pile sinking to its frictional force band underground layer medium ring produced around being filled between pile body and pile soil horizon.When being constructed in soft clay area at present, the commonly used bearing capacity by promoting the method for saturated soft soil draining to improve stake in the back-up sand of stake week.Traditional construction method work progress is loaded down with trivial details, and efficiency of construction is low, and pile section is for using steel prefabricated, is connected with the pile tube waiting external diameter by certain method, and this pile section cost is higher, and quality of connection is difficult to ensure that.The ring 11 of the bamboo joint pile 1 of the present invention is the most prefabricated in factory and stake is one-body molded, thus pile quality and durability are reliable, utilize pile body to its frictional force band underground layer medium ring produced around being filled between pile body and pile soil horizon when sandstone filler 3 is by pile sinking.The super quiet pore pressure rapid dispersion produced during the traditional method construction prefabricated pile of soft clay area can be promoted, accelerate foundation soil consolidation, improve the side friction of soil around pile, and reduce the final settlement of building.
The spacing between ring 11 and ring 11 in bamboo joint pile 1 of the present invention is 50cm to 200cm.It is preferably 100cm to 150cm.Minima 50cm can be selected, it is also possible to select maximum 200cm.
In embodiment, the external diameter of bamboo joint pile 1 ring 11 is than the big 5cm to 20cm of external diameter of non-ring part pile body.
Bottom the compound mode most preferably stake of bamboo joint pile 1 of the present invention and pile tube 2, the stake of first segment is bamboo joint pile 1, and the stake of remaining coupling part can be bamboo joint pile 1, also can be pile tube 2.
Present invention also offers the construction method of a kind of back-up sand bamboo joint pile, the method comprises the following steps successively:
A), centered by stake position, the material storage tube 4 depositing sandstone filler 3 is set at ground, in material storage tube 4, is pre-filled with sandstone filler 3；
B), sling first segment bamboo joint pile 1, it is located at stake position, by stake machine, bamboo joint pile 1 is squeezed into or is pressed in soil layer, by rubbing action and the interlocking of bamboo joint pile 1, sandstone filler 3 is brought in pile soil horizon, makes sandstone filler 3 around being filled between pile body and pile soil horizon, wherein, it is noted that sandstone filler 3 is the most enough, if will supplement in material storage tube 4 in time during sandstone filler 3 lazy weight；
D), slinging, another saves bamboo joint pile 1 or pile tube 2, after connecting with first segment bamboo joint pile 1, squeezed into or be pressed into by stake machine in soil layer, by the rubbing action of bamboo joint pile 1 and the rubbing action of interlocking or pile tube 2, sandstone filler 3 is brought in pile soil horizon, make sandstone filler 3 around being filled between pile body and pile soil horizon, to be supplemented in time equally in material storage tube 4 during sandstone filler 3 lazy weight；
E), repeat step d process, until pile sinking is complete.
Pile extension of the present invention saves the pile crown of stake at present and stops pile sinking when pile sinking to 1 meter of ground of distance, the stake that the stake that will connect the most again is sling with lower joint is docked, pile sinking can be continued after having docked, namely by stake machine, the bamboo joint pile 1 connected or pile tube 2 are squeezed into or be pressed in soil layer.
In embodiment, the material storage tube 4 of the present invention is the steel cylinder with upper and lower both ends open.When pile sinking, stake wears the both ends open up and down of material storage tube 4.
In embodiment, the profile of material storage tube 4 includes column type and funnel type.Material storage tube 4 can use column type, it would however also be possible to employ falls funnel type, the most also can use other to be suitable to any one shape bucket of blanking.
In embodiment, the height of material storage tube 4 is 50cm to 120cm.The optimum height of material storage tube 4 is 80cm.
In embodiment, when the profile of material storage tube 4 is column type, the internal diameter 30cm to 80cm bigger than the diameter of pile body of material storage tube 4.
In embodiment, if material storage tube 4 uses profile for funnel type, then the internal diameter 10cm to 40cm bigger than the diameter of pile body of material storage tube 4 end opening, the internal diameter 30cm to 100cm bigger than the diameter of pile body that material storage tube 4 is suitable for reading.
A kind of back-up sand bamboo joint pile of the present invention and construction method thereof, back-up sand construction can be completed fast, easily, pile quality and durability are reliable, the super quiet pore pressure rapid dispersion produced during the traditional method construction prefabricated pile of soft clay area can be promoted, accelerate foundation soil consolidation, improve the side friction of soil around pile, and reduce the final settlement of building.
It is an advantage of the current invention that: pile body ring is prefabricated, there is not pile section and pile body quality of connection is unstable and the problem of poor durability；The fillers such as sandstone get final product in band underground layer by the interlocking of ring etc. in pile driving process, are filled in stake week, and work progress is convenient.
Claims (9)
1. the construction method of a back-up sand bamboo joint pile, it is characterized in that: back-up sand bamboo joint pile includes that more piece connects pile sinking in a joint manner to the bamboo joint pile (1) in soil layer and pile tube (2) and sandstone filler (3), described bamboo joint pile (1) and pile tube (2) are the prefabricated pile of the molding that is prefabricated in the factory, and it is shaped with around protruding ring (11) on the pile body of described bamboo joint pile (1) at equal intervals, described sandstone filler (3) is by passing through pile body when bamboo joint pile (1) or pile tube (2) pile sinking to its frictional force band underground layer medium ring produced around being filled between pile body and pile soil horizon；The construction method of back-up sand bamboo joint pile comprises the following steps successively:
A), centered by stake position, the material storage tube (4) depositing sandstone filler (3) is set at ground, in material storage tube (4), is pre-filled with sandstone filler (3)；
B) first segment bamboo joint pile of, slinging (1), it is located at stake position, by stake machine, bamboo joint pile (1) is squeezed into or is pressed in soil layer, by rubbing action and the interlocking of bamboo joint pile (1), sandstone filler (3) is brought in pile soil horizon, make sandstone filler (3) around being filled between pile body and pile soil horizon, be supplemented in time during sandstone filler (3) lazy weight in material storage tube (4)；
D), slinging, another saves bamboo joint pile (1) or pile tube (2), after connecting with first segment bamboo joint pile (1), squeezed into or be pressed into by stake machine in soil layer, by the rubbing action of bamboo joint pile (1) and the rubbing action of interlocking or pile tube (2), sandstone filler (3) is brought in pile soil horizon, make sandstone filler (3) around being filled between pile body and pile soil horizon, be supplemented in time during sandstone filler (3) lazy weight in material storage tube (4)；
E), repeat step d process, until pile sinking is complete.
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 1, is characterized in that: described material storage tube (4) is the steel cylinder with upper and lower both ends open.
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 2, is characterized in that: the profile of described material storage tube (4) includes column type or funnel type.
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 3, is characterized in that: the height of described material storage tube (4) is 50cm to 120cm.
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 4, is characterized in that: the profile of described material storage tube (4) is column type, the internal diameter 30cm to 80cm bigger than the diameter of pile body of described material storage tube (4).
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 4, it is characterized in that: the profile of described material storage tube (4) is funnel type, the internal diameter 10cm to 40cm bigger than the diameter of pile body of described material storage tube (4) end opening, the internal diameter 30cm to 100cm bigger than the diameter of pile body that material storage tube (4) is suitable for reading.
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 1, is characterized in that: ring (11) spacing of described bamboo joint pile (1) is 50cm to 200cm.
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 1, is characterized in that: the external diameter of described bamboo joint pile (1) ring (11) is than the big 5cm to 20cm of external diameter of non-ring part pile body.
The construction method of a kind of back-up sand bamboo joint pile the most according to claim 1, it is characterized in that: described bamboo joint pile (1) and the compound mode of pile tube (2) are that bottom stake, first segment is bamboo joint pile (1), and remainder is bamboo joint pile (1) or pile tube (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201410653595.0A CN104389305B (en) | 2014-11-18 | 2014-11-18 | A kind of back-up sand bamboo joint pile and construction method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410653595.0A CN104389305B (en) | 2014-11-18 | 2014-11-18 | A kind of back-up sand bamboo joint pile and construction method thereof |
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| CN104389305B true CN104389305B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106192994A (en) * | 2016-08-30 | 2016-12-07 | 浙江大学建筑设计研究院有限公司 | Assembly concrete prefabricated pile |
| CN110206014A (en) * | 2019-03-27 | 2019-09-06 | 河海大学 | Fill out sand tube stake Bridgehead by Blastig reinforced construction method and its structure |
| CN111321729A (en) * | 2020-04-07 | 2020-06-23 | 凌晓明 | Precast pile, sand filling cylinder and construction method |
| CN111622273B (en) * | 2020-05-08 | 2021-04-23 | 浙江大学 | Test device and test method for simulating pile foundation bearing performance of precast pile filled with discrete drainage materials around |
| CN112343042A (en) * | 2020-12-01 | 2021-02-09 | 宁波中淳高科股份有限公司 | UHPC prefabricated special-shaped pile and preparation method thereof |
| CN113279419A (en) * | 2021-07-14 | 2021-08-20 | 四川藏区高速公路有限责任公司 | Anti-slide pile and tunnel portal anti-slide pile simulation test device |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH02232416A (en) * | 1989-03-06 | 1990-09-14 | Takechi Koumushiyo:Kk | Foundation pile structure |
| JPH1072825A (en) * | 1996-08-30 | 1998-03-17 | Geotop Corp | Construction method of footing pile |
| CN102900078A (en) * | 2011-07-26 | 2013-01-30 | 邹宗煊 | Anticorrosive preformed pile and manufacturing and constructing method thereof |
| CN103362122A (en) * | 2012-04-04 | 2013-10-23 | 邹宗煊 | High-bearing-capacity sand filling pipe pile with pile joints and manufacturing and construction method of pile |
| CN202767059U (en) * | 2012-06-29 | 2013-03-06 | 上海中技桩业股份有限公司 | High-friction type hollow square pile |
| CN203924045U (en) * | 2013-12-23 | 2014-11-05 | 中淳高科桩业股份有限公司 | Compound pile |
| CN204238209U (en) * | 2014-11-18 | 2015-04-01 | 中淳高科桩业股份有限公司 | A kind of back-up sand bamboo joint pile |
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Effective date of registration: 20180910 Address after: 315105 159 building 23, Qiming Road, Yinzhou District, Ningbo, Zhejiang, 159 Patentee after: Ningbo Zhong Chun Pile Foundation Engineering Technology Co., Ltd. Address before: 315145 Zhongchun Gaoke Pile Co., Ltd. No. 166 Linjiang Road, Ningbo Economic and Technological Development Zone, Zhejiang Province Patentee before: Zhongchun Gaoke Pile Industry Co., Ltd. |