CN111501800A - Sluice gate foundation steel sheet pile seepage prevention structure - Google Patents
Sluice gate foundation steel sheet pile seepage prevention structure Download PDFInfo
- Publication number
- CN111501800A CN111501800A CN202010445093.4A CN202010445093A CN111501800A CN 111501800 A CN111501800 A CN 111501800A CN 202010445093 A CN202010445093 A CN 202010445093A CN 111501800 A CN111501800 A CN 111501800A
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- steel sheet
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- inserted bar
- sheet pile
- foundation steel
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 40
- 239000010959 steel Substances 0.000 title claims abstract description 40
- 230000002265 prevention Effects 0.000 title claims description 4
- 239000007787 solid Substances 0.000 claims description 22
- 239000000314 lubricant Substances 0.000 claims description 20
- 230000007246 mechanism Effects 0.000 claims description 8
- 230000008878 coupling Effects 0.000 claims description 5
- 238000010168 coupling process Methods 0.000 claims description 5
- 238000005859 coupling reaction Methods 0.000 claims description 5
- 238000010030 laminating Methods 0.000 claims description 2
- 239000002689 soil Substances 0.000 abstract description 26
- 238000003780 insertion Methods 0.000 abstract description 11
- 230000037431 insertion Effects 0.000 abstract description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 6
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 7
- 238000010276 construction Methods 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 238000012938 design process Methods 0.000 description 2
- 230000008595 infiltration Effects 0.000 description 2
- 238000001764 infiltration Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D19/00—Keeping dry foundation sites or other areas in the ground
- E02D19/02—Restraining of open water
- E02D19/04—Restraining of open water by coffer-dams, e.g. made of sheet 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
- E02D5/02—Sheet piles or sheet pile bulkheads
- E02D5/03—Prefabricated parts, e.g. composite sheet piles
- E02D5/04—Prefabricated parts, e.g. composite sheet piles made of steel
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- 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)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Bulkheads Adapted To Foundation Construction (AREA)
Abstract
The invention relates to a sluice gate foundation steel sheet pile seepage-proofing structure which comprises a plate body and locking notches arranged on two sides of the plate body, wherein inserting rods parallel to the locking notches are inserted into the locking notches, and the outer walls of the inserting rods are attached to the inner walls of the locking notches. The invention utilizes the insertion rod to limit the shape of the locking notch, so that the shape of the locking notch can not be changed after the locking notch is inserted into soil, thereby enabling the connection between adjacent locking notches to be tighter, and further enabling water not to leak easily.
Description
Technical Field
The invention relates to the technical field of pile foundation waterproof structures, in particular to a sluice gate foundation steel sheet pile seepage-proofing structure.
Background
At present when the floodgate base to the sluice is under construction, need use the steel sheet pile to enclose and close, utilize the steel sheet pile to block the infiltration of construction section, prevent water infiltration construction position.
In the steel sheet pile need be beaten it into soil through the vibratory hammer when the installation, at the in-process that the steel sheet pile inserted soil, the fore shaft of steel sheet pile can receive the pressure that soil was applyed and produce deformation, can lead to the fore shaft of adjacent steel sheet pile clearance appearing when connecting this moment to influence the water-proof effects of steel sheet pile.
Therefore, a new technical solution is needed to solve the above problems.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide the anti-seepage structure for the sluice gate foundation steel sheet pile, and when the steel sheet pile is inserted into soil, the shape of the locking notch cannot be changed, so that the connection of the adjacent locking notches is tighter, and the leakage of water is reduced.
The above object of the present invention is achieved by the following technical solutions: the utility model provides a sluice gate foundation steel sheet pile seepage prevention structure, includes the plate body and sets up in the fore shaft of plate body both sides, all insert in the fore shaft and be on a parallel with the inserted bar of fore shaft, the outer wall of inserted bar and the inner wall laminating of fore shaft.
Through adopting above-mentioned technical scheme, utilize the inserted bar to restrict the shape of fore shaft, make its shape can not change after the fore shaft inserts in soil to make the connection between the adjacent fore shaft inseparabler, and then make the difficult seepage that produces of water.
The present invention in a preferred example may be further configured to: the lower end of the inserted bar is connected with a guide block, and the end face of the guide block, which is close to the inserted bar, is abutted to the lower end face of the lock opening.
Through adopting above-mentioned technical scheme, utilize the guide block to seal the opening of fore shaft lower extreme, thereby make soil can not get into the fore shaft and lead to the inserted bar rebound this moment to make the design process of inserted bar be difficult for receiving the influence.
The present invention in a preferred example may be further configured to: the inserted bar is connected with and can dismantle the coupling mechanism who is connected with it and guide block, coupling mechanism is including wearing to locate the connecting rod in the inserted bar and being fixed in the turning block of connecting rod upper end, the connecting rod rotates with the inserted bar to be connected, and the turning block is close to the terminal surface and the inserted bar upper end butt of connecting rod, the one end and the guide block threaded connection of turning block are kept away from to the connecting rod.
Through adopting above-mentioned technical scheme, when taking out the fore shaft from soil, utilize coupling mechanism to connect the guide block, can take out the guide block simultaneously at the in-process of taking out the fore shaft this moment.
The present invention in a preferred example may be further configured to: the guide block upper end fixedly connected with extends the piece, it laminates with the fore shaft inner wall to extend a piece outer wall.
Through adopting above-mentioned technical scheme, utilize the extension piece to inject the relative position between guide block and the fore shaft, be difficult for producing relative movement between guide block and the fore shaft after the fore shaft is inserted and is arranged in soil to make the connecting rod change and be connected with the guide block again.
The present invention in a preferred example may be further configured to: the inserted bar upper end can be dismantled and be connected with the anticreep piece, the terminal surface and the fore shaft butt that the anticreep piece is close to the inserted bar.
Through adopting above-mentioned technical scheme, utilize anticreep piece to inject the relative position between inserted bar and the fore shaft, make the fore shaft can not produce the removal when rebound to make the inserted bar change and take out the guide block from soil.
The present invention in a preferred example may be further configured to: the upper end of the inserted bar is fixedly connected with a fixing ring, a movable ring penetrates through the fixing ring, and the anti-falling block penetrates through the movable ring and abuts against the upper end of the locking notch.
Through adopting above-mentioned technical scheme, directly pass the movable ring with the anticreep piece and just can realize the relatively fixed of inserted bar and fore shaft to it is more convenient to make the installation of anticreep piece.
The present invention in a preferred example may be further configured to: the inserted bar all sets up a plurality of shrink grooves that are vertical setting with the lateral wall of fore shaft inner wall contact.
Through adopting above-mentioned technical scheme, utilize the shrink groove to reduce the area of contact between inserted bar and the fore shaft inner wall to the process of making the inserted bar insert and extracting is more convenient.
The present invention in a preferred example may be further configured to: the lower end of the connecting rod is in threaded connection with a supporting plate, and a solid lubricant is arranged between the inserting rod and the supporting plate.
By adopting the technical scheme, the friction coefficient of the inner wall of the locking notch is further reduced by utilizing the solid lubricant, so that the connection of the adjacent locking notches is more convenient.
The present invention in a preferred example may be further configured to: the utility model discloses a solid lubricant, including the inserted bar, the inserted bar is close to the terminal surface fixedly connected with extension pipe of layer board, extension pipe outer wall and fore shaft inner wall butt, solid lubricant arranges in the extension pipe, the extension groove of intercommunication each other is seted up to the position that the extension pipe outer wall is close to the inserted bar, the extension inslot wall runs through there is the connecting hole with extension pipe inner chamber intercommunication, the layer board is close to the terminal surface fixedly connected with ejector pad of inserted bar, the lateral wall and the extension inside pipe inner wall butt of ejector pad.
By adopting the technical scheme, more solid lubricant can be accommodated by utilizing the extension pipe, so that the situation that the inner wall of the locking notch is not completely coated by the solid lubricant is not easy to occur.
In summary, the invention has the following beneficial technical effects:
1. when the steel sheet piles are inserted into soil, the insertion rods are inserted into the locking openings, and the locking openings are not easy to deform under the pressure exerted by the soft drawing, so that the adjacent locking openings are connected more tightly, and water leakage is not easy to generate;
2. the lower end opening of the locking notch is sealed by the guide block, and the inserted rod cannot move under the action of upward thrust applied by soil when the steel sheet pile is inserted into the soil, so that the process of shaping the locking notch by the inserted rod is more stable;
3. the solid lubricant is smeared on the inner wall of the locking notch by the extrusion of the supporting plate and the inserted rod, so that the friction coefficient of the inner wall of the locking notch is reduced, and the connection process between adjacent locking notches is more convenient.
Drawings
FIG. 1 is a perspective view of the present embodiment;
FIG. 2 is a schematic view of the present embodiment showing a structure of the insert rod;
fig. 3 is an enlarged view of a portion a of fig. 2.
In the figure, 1, a plate body; 11. a substrate; 12. a wing plate; 2. locking the opening; 3. inserting a rod; 31. an extension pipe; 32. an extension groove; 33. connecting holes; 34. a contraction groove; 4. a guide block; 41. an extension block; 5. a connecting mechanism; 51. a connecting rod; 52. rotating the block; 53. an anti-drop block; 54. a fixing ring; 55. a movable ring; 56. a support plate; 57. and (7) pushing the block.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
According to the anti-seepage structure for the sluice foundation steel sheet pile, disclosed by the invention, when the steel sheet pile is inserted into soil, the shape of the locking notch 2 is limited, so that the locking notches 2 of adjacent steel sheet piles are more tightly connected, and the waterproof effect is improved. As shown in fig. 1, the locking device comprises a plate body 1 and locking notches 2 integrally formed at two sides of the plate body 1, wherein the plate body 1 comprises a base plate 11 and wing plates 12 integrally formed at two sides of the base plate 11, an included angle is formed between each wing plate 12 and the base plate 11, the included angles formed between each wing plate 12 and the base plate 11 are equal, and the locking notches 2 are arranged at one ends of the wing plates 12 far away from the base plate 11. An inserting rod 3 parallel to the locking notch 2 is inserted in the locking notch 2, the side wall of the inserting rod 3 is attached to the inner wall of the locking notch 2, so that the inserting rod 3 is used for sealing the lower end opening of the locking notch 2, soil cannot enter the locking notch 2 from the lower end opening of the locking notch 2, the locking notch 2 cannot deform outwards, meanwhile, the inserting rod 3 is used for supporting the inner wall of the locking notch 2, the locking notch 2 cannot deform inwards when pressure applied by the soil is received, at the moment, when the locking notches 2 between subsequent steel sheet piles are connected, the adjacent locking notches 2 are connected tightly, and water leakage is reduced.
As shown in fig. 1, when the steel sheet pile is inserted into soil, the soil exerts an upward force on the insertion rod 3, and at this time, the insertion rod 3 cannot keep moving synchronously with the locking notch 2, thereby affecting the shaping of the locking notch 2 by the insertion rod 3. Therefore, the lower end of the inserted rod 3 is connected with the guide block 4, the end face of the guide block 4 close to the inserted rod 3 is abutted against the lower end face of the lock opening 2, and the guide block 4 seals the opening at the lower end of the lock opening 2. Utilize guide block 4 to after the position restriction of fore shaft 2 this moment, soil can't get into in the fore shaft 2, inserted bar 3 no longer receives the ascending pressure that soil was applyed this moment to make inserted bar 3 can with fore shaft 2 synchronous motion, make inserted bar 3 more stable to the design process of fore shaft 2.
As shown in fig. 2, since the steel sheet pile needs to be pulled out of the soil after the construction is completed, and at this time, the guide block 4 needs to be taken out at the same time, the insertion rod 3 is connected with a connecting mechanism 5 detachably connected with the guide block 4, the connecting mechanism 5 includes a connecting rod 51 inserted into the insertion rod 3 and a rotating block 52 integrally formed at the upper end of the connecting rod 51, and the connecting rod 51 is parallel to the insertion rod 3. The connecting rod 51 rotates with the insert rod 3. The upper end of the guide block 4 is integrally formed with an extension block 41, the extension block 41 is inserted into the locking opening 2, the side wall of the extension block 41 is abutted against the inner wall of the locking opening 2, one end of the connecting rod 51 far away from the rotating block 52 is in threaded connection with the extension block 41, and the end face of the rotating block 52 close to the connecting rod 51 is abutted against the upper end of the inserted rod 3. At this time, when the steel sheet pile is pulled out, the insertion rod 3 is inserted into the locking notch 2 and the connecting rod 51 is rotated to be connected to the guide block 4, and then, when the steel sheet pile is pulled out from the soil, the guide block 4 can be simultaneously taken out from the soil.
As shown in fig. 2, when the guide block 4 is taken out of the soil, the guide block 4 and the inserted rod 3 connected thereto are both subjected to a downward force, and at this time, the movement of the inserted rod 3 needs to be restricted, so that the anti-drop block 53 is detachably connected to the upper end of the inserted rod 3, the end surface of the anti-drop block 53 close to the inserted rod 3 abuts against the upper end surface of the fore shaft 2, and the upper end surface of the inserted rod 3 is lower than the upper end surface of the fore shaft 2. The welding of inserted bar 3 upper end has and is semicircular solid fixed ring 54, wears to be equipped with annular loose ring 55 in the solid fixed ring 54, and anticreep piece 53 passes loose ring 55 and butt in the upper end of fore shaft 2 to prescribe a limit to the relative position of inserted bar 3 and fore shaft 2, make inserted bar 3 and steel sheet pile can not produce relative movement when the steel sheet pile removes, thereby make the process of taking out of guide block 4 more convenient.
In order to make the inserted bar 3 more smooth and easy when taking out from the fore shaft 2, a plurality of shrink grooves 34 parallel to the inserted bar 3 are all seted up to the lateral wall of inserted bar 3 and the contact of the inner wall of fore shaft 2, utilize shrink grooves 34 to reduce the area of contact between inserted bar 3 and the inner wall of fore shaft 2, reduced the frictional force between inserted bar 3 and the inner wall of fore shaft 2 this moment to the process that makes the inserted bar 3 insert and extract the fore shaft 2 is more smooth and easy.
As shown in fig. 3, when the adjacent locking notches 2 are connected, the connection between the two is tight, and the process of inserting the two into each other is troublesome. Therefore, the lower end of the connecting rod 51 is connected with a supporting plate 56 in a threaded manner, and the side wall of the supporting plate 56 parallel to the axis of the connecting rod 51 is abutted against the inner wall of the locking opening 2. An extension pipe 31 is integrally formed on the end face of the insertion rod 3 close to the supporting plate 56, the outer wall of the extension pipe 31 is abutted against the inner wall of the locking notch 2, a solid lubricant is arranged in the extension pipe 31, the solid lubricant can be grease, and the connecting rod 51 penetrates through the solid lubricant. The outer wall of the extension pipe 31 is provided with extension grooves 32 which are communicated with each other at the position close to the inserted link 3, the side wall of the extension groove 32 close to the axis of the connecting link 51 is penetrated with a plurality of connecting holes 33 which are communicated with the inner cavity of the extension pipe 31, and the solid lubricant in the extension pipe 31 enters the extension groove 32 through the connecting holes 33 and is then smeared on the inner wall of the locking notch 2. The end face of the support plate 56 close to the insert rod 3 is integrally formed with a push block 57, one end of the push block 57 far from the support plate 56 is inserted into the extension pipe 31, and the side wall of the push block 57 abuts against the inner wall of the extension pipe 31 and pushes the solid lubricant to be extruded from the connecting hole 33 into the extension groove 32. When the insert rod 3 is pushed towards the inside of the locking notch 2, the supporting plate 56 can be moved towards the insert rod 3 by the force applied by the locking notch 2 to hinder the movement of the insert rod, and the solid lubricant is applied to the force to cause the solid lubricant to be in contact with the inner wall of the locking notch 2 and be smeared on the inner wall of the locking notch 2, so that the friction force generated when the adjacent locking notches 2 are connected is reduced by the solid lubricant, and the adjacent locking notches 2 are more conveniently connected.
The implementation principle of the embodiment is as follows: before inserting the steel sheet pile into soil, filling a solid lubricant into the extension pipe 31, then inserting the inserted rod 3 into the locking notch 2, applying force to the inserted rod 3 to completely insert the inserted rod 3 into the locking notch 2, extruding the solid lubricant in the process to enable the solid lubricant to be smeared on the inner wall of the locking notch 2, then placing the guide block 4 at one end of the locking notch 2 close to the connecting rod 51, rotating the connecting rod 51 to enable the connecting rod to be in threaded connection with the guide block 4, then inserting one end of the steel sheet pile close to the guide block 4 downwards into the soil, rotating the connecting rod 51 to enable the connecting rod to be separated from the guide block 4 and enable the inserted rod 3 to be pulled out of the locking notch 2, and then continuing the installation of the subsequent steel sheet pile. When the steel sheet pile is pulled out, the insertion rod 3 is inserted into the fore shaft 2, the connecting rod 51 is rotated to be connected with the guide block 4, then the movable ring 55 is moved upwards, the anti-falling block 53 penetrates through the movable ring 55 and abuts against the upper end of the fore shaft 2, and at the moment, the steel sheet pile is pulled out.
The embodiments of the present invention are preferred embodiments of the present invention, and the scope of the present invention is not limited by these embodiments, so: all equivalent changes made according to the structure, shape and principle of the invention are covered by the protection scope of the invention.
Claims (9)
1. The utility model provides a sluice gate foundation steel sheet pile seepage prevention structure, includes plate body (1) and sets up in fore shaft (2) of plate body (1) both sides, its characterized in that: the lock is characterized in that an inserting rod (3) parallel to the lock (2) is inserted into the lock (2), and the outer wall of the inserting rod (3) is attached to the inner wall of the lock (2).
2. The sluice foundation steel sheet pile seepage-proofing structure according to claim 1, characterized in that: the lower end of the inserted bar (3) is connected with a guide block (4), and the end face of the guide block (4) close to the inserted bar (3) is abutted to the end face of the lower end of the locking notch (2).
3. The sluice foundation steel sheet pile seepage-proofing structure according to claim 2, characterized in that: inserted bar (3) are connected with and can dismantle coupling mechanism (5) of being connected with guide block (4), coupling mechanism (5) are including wearing to locate connecting rod (51) in inserted bar (3) and being fixed in turning block (52) of connecting rod (51) upper end, connecting rod (51) rotate with inserted bar (3) and are connected, and turning block (52) are close to terminal surface and inserted bar (3) upper end butt of connecting rod (51), the one end and guide block (4) threaded connection of turning block (52) are kept away from in connecting rod (51).
4. The sluice foundation steel sheet pile seepage-proofing structure according to claim 2, characterized in that: guide block (4) upper end fixedly connected with extends piece (41), extend piece (41) outer wall and fore shaft (2) inner wall laminating.
5. The sluice foundation steel sheet pile seepage-proofing structure according to claim 1, characterized in that: the anti-falling device is characterized in that the upper end of the inserted bar (3) is detachably connected with an anti-falling block (53), and the anti-falling block (53) is close to the end face of the inserted bar (3) and abutted against the locking notch (2).
6. The sluice foundation steel sheet pile seepage-proofing structure according to claim 5, characterized in that: the upper end of the inserted bar (3) is fixedly connected with a fixing ring (54), a movable ring (55) penetrates through the fixing ring (54), and the anti-falling block (53) penetrates through the movable ring (55) and abuts against the upper end of the locking notch (2).
7. The sluice foundation steel sheet pile seepage-proofing structure according to claim 1, characterized in that: a plurality of shrink grooves (34) which are vertically arranged are formed in the side wall, in contact with the inner wall of the locking notch (2), of the inserted rod (3).
8. The sluice foundation steel sheet pile seepage-proofing structure according to claim 3, characterized in that: the lower end of the connecting rod (51) is in threaded connection with a supporting plate (56), and a solid lubricant is arranged between the inserted rod (3) and the supporting plate (56).
9. The sluice foundation steel sheet pile seepage-proofing structure according to claim 8, characterized in that: the utility model discloses a lock catch, including inserted bar (3), extension pipe (31) outer wall and fore shaft (2) inner wall butt, solid lubricant arranges in extension pipe (31), extension pipe (31) outer wall is close to the position of inserted bar (3) and sets up extension groove (32) that communicate each other, extension groove (32) inner wall runs through connecting hole (33) with extension pipe (31) inner chamber intercommunication, end face fixedly connected with ejector pad (57) that inserted bar (3) is close to in layer board (56), the lateral wall and the extension pipe (31) inner wall butt of ejector pad (57).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010445093.4A CN111501800A (en) | 2020-05-23 | 2020-05-23 | Sluice gate foundation steel sheet pile seepage prevention structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010445093.4A CN111501800A (en) | 2020-05-23 | 2020-05-23 | Sluice gate foundation steel sheet pile seepage prevention structure |
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| Publication Number | Publication Date |
|---|---|
| CN111501800A true CN111501800A (en) | 2020-08-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010445093.4A Pending CN111501800A (en) | 2020-05-23 | 2020-05-23 | Sluice gate foundation steel sheet pile seepage prevention structure |
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| CN (1) | CN111501800A (en) |
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| CN210315581U (en) * | 2019-07-02 | 2020-04-14 | 广东晟丰建设工程有限公司 | Epoxy type steel pile convenient to install |
| CN212223923U (en) * | 2020-05-23 | 2020-12-25 | 深圳市东深工程有限公司 | Sluice gate foundation steel sheet pile seepage prevention structure |
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2020
- 2020-05-23 CN CN202010445093.4A patent/CN111501800A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20080190838A1 (en) * | 2003-08-15 | 2008-08-14 | Angus Reardon | Bailing Apparatus |
| CN102535439A (en) * | 2011-11-24 | 2012-07-04 | 东南大学 | Steel sheet pile joint structure |
| CN202881933U (en) * | 2012-10-25 | 2013-04-17 | 中铁上海工程局有限公司第五分公司 | Plumbing pipe combination type lock mouth steel pipe pile |
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