CN113897947B - Construction method and construction structure of lock catch steel pipe pile - Google Patents
Construction method and construction structure of lock catch steel pipe pile Download PDFInfo
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- CN113897947B CN113897947B CN202111224433.1A CN202111224433A CN113897947B CN 113897947 B CN113897947 B CN 113897947B CN 202111224433 A CN202111224433 A CN 202111224433A CN 113897947 B CN113897947 B CN 113897947B
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- pipe
- steel pipe
- concave
- lock catch
- catch steel
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- 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
- E02D5/28—Prefabricated piles made of steel or other metals
- E02D5/285—Prefabricated piles made of steel or other metals tubular, e.g. prefabricated from sheet pile elements
Abstract
The invention relates to the technical field of construction methods of constructional engineering, in particular to a construction method and a construction structure of a lock catch steel pipe pile. Welding and fixing the concave pipe and the convex pipe on two sides of the main pipe to form a lock catch steel pipe pile, sealing the bottom opening of the concave pipe, respectively sealing the inner side and the outer side of the side groove by using a structure which can be damaged by a cutting knife, slotting at a construction position, placing the lock catch steel pipe pile in the slot, and pouring underwater concrete on two sides of the lock catch steel pipe pile; when constructing adjacent lock catch steel pipe piles, cutting the side surface grooves by using a cutting knife, lowering the adjacent lock catch steel pipe piles to enable the convex pipes to enter the concave pipes with the cut side surface grooves, and locking the two lock catch steel pipe piles; and sequentially performing the steps until all the construction of the lock catch steel pipe piles is completed. The construction method provided by the invention is simple to operate, has low input cost, can greatly shorten the construction period and reduce the waste of resources.
Description
Technical Field
The invention relates to the technical field of construction methods of constructional engineering, in particular to a construction method and a construction structure of a lock catch steel pipe pile.
Background
The immersed tube prefabricating method mainly comprises a factory method and a dry dock method, wherein the factory method is less in application, the immersed tube prefabricating method is only applied to a few projects such as an Herlersea isthmus immersed tube tunnel and a Hongzhao Australian bridge immersed tube tunnel at present, and the rest immersed tube tunnels are prefabricated by the dry dock method. The dry dock is a place for prefabricating concrete immersed tubes, and the prefabrication, storage and outfitting of tube sections are completed in the dry dock, and then floating transportation, sinking and butt joint are carried out. In order to solve the transition between different forms and different construction processes of a sinking pipe section in a river and a land area bank section and ensure the undocking and butt joint requirements of the sinking pipe section, the dock gate adopts a lock catch steel pipe pile and concrete combined structure for resisting high water pressure outside the dock gate and is used as a waterproof curtain for preventing outside river water from seeping into the dock. In the process of pouring concrete below the lock catch steel pipe pile, the concrete easily flows into the notch of the lock catch steel pipe pile, so that the convex opening of the next lock catch steel pipe pile cannot be inserted into the notch; meanwhile, concrete easily flows into adjacent groove sections without grabbing the groove, and the groove sections are influenced to form the groove after solidification. The conventional project adopts an impact hammer method to break the streaming concrete, the construction efficiency is low, the treatment time is long, the cost is high, and the construction quality of the lock catch steel pipe pile joint cannot be effectively guaranteed.
In order to solve the problem in the prior art, a chinese patent invention, entitled "construction method for grouting water-stop curtain accurately for deeply buried and excavated station" with patent number CN112878350A, introduces a construction method for water-stop curtain, in which adjacent first and second steel pipe piles are connected by first and second latches, the first and second latches are welded at both sides of the steel pipe pile, an internal supporting mechanism and a reinforcement are arranged in the first and second latches, the first steel pipe pile and the internal supporting mechanism are lifted at the same time, the second steel pipe pile and the internal supporting mechanism are lifted, the first and second steel pipe piles are butted and deeply buried, a first enclosure area formed by driving a groove-shaped pile plate into a soil layer is punched, the reinforcement is ejected outwards by the internal supporting mechanism, concrete is poured into the first enclosure area, after the concrete is solidified, the internal supporting mechanism is retracted and taken out, a waterproof cementing material is poured into the first and second latches, and the above steps are repeated until the water-stop curtain is formed. The construction method has the advantage of accurate positioning, but the scheme has some technical defects, because after the steel pipe piles and the lock catches are inserted and driven, the maintenance plate needs to be inserted and driven at the position between the two steel pipe piles to form a surrounding area, then concrete is poured in the surrounding area, and then a glue setting material is poured in the lock catches, the scheme does not always consider the problem of flow bypassing of the opposite side of the steel pipe piles, because the steel pipe piles are connected with each other, the scheme only considers the problem of lock catch closed connection of one side, but does not carry out any treatment on the lock catches of the other side of the steel pipe piles, the construction scheme can be applied in a dry construction environment, but cannot be well applied to an area with large water content, and therefore, the lock catch steel pipe pile construction method capable of being applied to the area with large water content is urgently needed.
Disclosure of Invention
The invention aims to solve the defects of the background technology and provide a construction method and a construction structure of a lock catch steel pipe pile.
The technical scheme of the invention is as follows: a construction method of a lock catch steel pipe pile comprises a main pipe, wherein concave pipes and convex pipes are respectively arranged on two sides of the main pipe; the convex pipe is fixed on the side part of the main pipe through a vertical connecting plate; one side of the concave pipe, which is far away from the main pipe, is provided with a side groove for the connection plate of the adjacent main pipe to pass through; the convex pipe is sleeved in the concave pipe of the adjacent main pipe from top to bottom to connect the two adjacent main pipes into a whole,
welding and fixing the concave pipe and the convex pipe on two sides of the main pipe to form a lock catch steel pipe pile, sealing an opening at the bottom of the concave pipe, respectively sealing the inner side and the outer side of the side groove by using a structure which can be damaged by a cutting knife, slotting at a construction position, placing the lock catch steel pipe pile in the slot, and pouring underwater concrete on two sides of the lock catch steel pipe pile; when constructing adjacent lock catch steel pipe piles, cutting the side surface grooves by using a cutting knife, transferring the adjacent lock catch steel pipe piles to enable the convex pipes of the adjacent lock catch steel pipe piles to enter the concave pipes of the cut side surface grooves, and locking the two lock catch steel pipe piles; and sequentially carrying out the steps until all the construction of the lock catch steel pipe piles is completed.
The method for further closing the inner side of the side groove comprises the following steps: and selecting a PVC pipe matched with the inner diameter of the concave pipe, filling and sealing the PVC pipe, and then plugging the PVC pipe into the concave pipe until the concave pipe is completely filled with the PVC pipe.
The method for filling and sealing the PVC pipe further comprises the following steps: and filling coarse sand into the PVC pipe, and sealing the upper end and the lower end of the PVC pipe by using the plug.
A further method of sealing the outside of the lateral trough comprises: and bending an iron sheet into an arc-shaped structure, and welding and fixing two sides of the iron sheet on the side part of the main pipe to ensure that the arc-shaped inner side end face of the iron sheet is attached to the outer side of the side groove to seal the side groove.
The method for cutting the side groove by using the cutter further comprises the following steps: and welding a cutting knife on the grab bucket, inserting the cutting knife into the side groove, scratching the iron sheet and the PVC pipe along the vertical movement of the cutting knife, and manually cleaning PVC pipe fragments drifting out of the concave pipe.
A further method for closing the bottom opening of the multi-concave pipe comprises the following steps: and a pocket bottom plate is welded at the bottom opening of the concave pipe, and the pocket bottom plate is larger than the bottom opening of the concave pipe to completely seal the bottom opening of the concave pipe.
And after the further lock catch steel pipe piles are put in place in the grooves, backfilling sandbags on the parts of the pocket bottom plates, which exceed the openings at the bottoms of the concave pipes.
And (3) before the adjacent lock catch steel pipe piles are further constructed, removing the sandbags backfilled on the pocket bottom plate.
The method for welding and fixing the two sides of the iron sheet on the side part of the main pipe further comprises the following steps: and spot-welding thin steel bars on two sides of the iron sheet for positioning, and welding and fixing the iron sheet on the side part of the main pipe.
Further comprises the following steps: the concave pipe and the convex pipe are welded and fixed on the side part of the main pipe, and a pocket bottom plate is welded at the opening at the bottom of the concave pipe;
1) Filling coarse sand into the PVC pipe, and sealing the upper end and the lower end of the PVC pipe by using plugs;
2) Inserting the filled and sealed PVC pipe into the concave pipe to fill and seal the inner side of the side groove on the concave pipe;
3) Bending the iron sheet into an arc-shaped structure, spot-welding thin steel bars on two sides of the iron sheet, and welding and fixing the iron sheet on the side part of the main pipe to enable the arc-shaped inner side of the iron sheet to be tightly attached to the outer side of the side groove and seal the outer side of the side groove;
4) Marking the position of the groove section on the finished guide wall, slotting, putting the lock catch steel pipe pile to a set position, backfilling a sand bag on the pocket bottom plate, and pouring underwater concrete to a set elevation;
5) Before the construction of the locking steel pipe pile of the next groove section, catching and removing the sandbags on the pocket bottom plates of the adjacent constructed locking steel pipe piles;
6) Welding a cutting knife on the grab bucket, inserting the cutting knife into a side groove of a concave pipe of the constructed lock catch steel pipe pile, scratching a PVC pipe and an iron sheet, and manually cleaning floating PVC pipe fragments;
7) And hoisting the lock catch steel pipe piles of the next groove section to enable the convex pipes to extend into the concave pipes with the side grooves cut open, locking two adjacent lock catch steel pipe piles in sequence until all the lock catch steel pipe piles are constructed.
A construction structure of a construction method of a lock catch steel pipe pile is characterized in that: comprises a PVC ring filled inside the concave pipe and an iron sheet covered outside the concave pipe; the iron sheet is of a bent structure which is bent into an arc shape and seals the side groove of the concave pipe, and two sides of the iron sheet are welded on the side part of the main pipe; the PVC pipe is filled with medium-coarse sand, and the PVC pipe is attached to the end face of the inner side of the concave pipe to seal the inner side of the side groove.
The locking steel pipe pile is characterized in that the locking steel pipe pile is provided with a concave pipe which is filled with concrete, the concave pipe is arranged in the locking steel pipe pile, and the concave pipe is arranged at the bottom of the locking steel pipe pile.
The construction method provided by the invention is simple to operate, has low input cost, can greatly shorten the construction period and reduce the waste of resources.
Drawings
FIG. 1: the invention discloses a side view for installing and constructing a lock catch steel pipe pile;
FIG. 2: the invention discloses a top view of installation construction of a lock catch steel pipe pile;
wherein: 1-main pipe; 2-a concave pipe; 3, a convex pipe; 4-pocket bottom plate; 5-PVC pipe; 6, medium coarse sand; 7-iron sheet; 8-thin steel bars; 9, a guide wall; 10-sandbag; 11-a connecting plate; 12-side groove.
Detailed Description
Reference will now be made in detail to the embodiments of the present invention, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The invention is described in further detail below with reference to the figures and the specific embodiments.
As shown in fig. 1-2, the present embodiment relates to a construction method of a locking steel pipe pile, and a specific locking steel pipe pile of the present embodiment is, as shown in fig. 2, provided with a main pipe 1, where concave pipes 2 and convex pipes 3 are respectively disposed on two sides of the main pipe 1, the convex pipes 3 are fixed on a side portion of the main pipe 1 through vertical connecting plates 11, a side groove 12 for allowing the connecting plate 11 of an adjacent main pipe 1 to pass through is disposed on one side of the concave pipe 2, which is far away from the main pipe 1, and the convex pipes 3 are sleeved in the concave pipes 2 of the adjacent main pipes 1 from top to bottom to connect the adjacent two main pipes 1 into a whole. The actual locking situation is shown in fig. 2.
The construction method of the locking steel pipe pile specifically comprises the following steps:
1. the concave pipe 2 and the convex pipe 3 are welded and fixed on the side part of the main pipe 1, a pocket bottom plate 4 is welded at the opening at the bottom of the concave pipe 2, and a welding seam is checked to ensure that the welding seam meets the requirement;
2. carrying the lock catch steel pipe pile to the site, filling coarse sand 6 into the PVC pipe 5, sealing the upper end and the lower end of the PVC pipe 5 by using plugs, and bonding the plugs on the PVC pipe 5 by using special glue;
3. filling and sealing the inner sides of the side grooves 12 on the concave pipe 2 by plugging the filled and sealed PVC pipes 5 into the concave pipe 2, and selecting the national root PVC pipes 5 to be sequentially connected with the filled concave pipe 2 under the condition that a single PVC pipe cannot completely fill the concave pipe 2;
4. bending an iron sheet 7 (an iron sheet 7 position thin galvanized iron sheet in the embodiment) into an arc-shaped structure, spot-welding thin steel bars 8 at two sides, and welding and fixing the thin steel bars on the side part of the main pipe 1 to enable the arc-shaped inner side of the iron sheet 7 to be tightly attached to the outer side of the side groove 12 and seal the outer side of the side groove 12;
5. marking the position of a groove section on the finished guide wall 9, slotting by using slotting equipment, lowering a lock catch steel pipe pile to a set position, backfilling a sandbag 10 on the pocket bottom plate 4, and pouring underwater concrete to a set elevation;
6. before the construction of the locking steel pipe pile of the next groove section, catching and removing the sandbags 10 on the pocket bottom plates 4 of the adjacent locking steel pipe piles which are constructed;
7. welding a cutter on the grab bucket, inserting the cutter into a side groove 12 of a concave pipe 2 of the constructed lock catch steel pipe pile, scratching a PVC pipe 5 and an iron sheet 7, manually cleaning floating fragments of the PVC pipe 5, allowing medium grit 6 to flow out of the side groove 12 into slurry, and removing the slurry by using a grooving device;
8. and hoisting the locking steel pipe piles of the next groove section to enable the convex pipes 3 to extend into the concave pipes 2 with the side grooves 12 cut open, locking two adjacent locking steel pipe piles in sequence until all locking steel pipe piles are constructed.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are given by way of illustration of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the invention as defined by the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (2)
1. A construction method of a lock catch steel pipe pile comprises a main pipe (1), wherein concave pipes (2) and convex pipes (3) are respectively arranged on two sides of the main pipe (1); the convex pipe (3) is fixed on the side part of the main pipe (1) through a vertical connecting plate (11); one side of the concave pipe (2) far away from the main pipe (1) is provided with a side groove (12) for the connecting plate (11) of the adjacent main pipe (1) to pass through; the convex pipe (3) is sleeved in the concave pipe (2) of the adjacent main pipe (1) from top to bottom to connect the two adjacent main pipes (1) into a whole,
the method is characterized in that: the method comprises the following steps that a concave pipe (2) and a convex pipe (3) are fixedly welded on two sides of a main pipe (1) to form a lock catch steel pipe pile, the bottom opening of the concave pipe (2) is sealed, the inner side and the outer side of a side groove (12) are respectively sealed by using a structure which can be damaged by a cutting knife, a groove is formed in a construction position, the lock catch steel pipe pile is placed in the groove, and underwater concrete is poured on two sides of the lock catch steel pipe pile; when the adjacent lock catch steel pipe piles are constructed, the side surface grooves (12) are cut off by using a cutting knife, the adjacent lock catch steel pipe piles are lowered, so that the convex pipes (3) of the adjacent lock catch steel pipe piles enter the concave pipes (2) of the cut side surface grooves (12), and the two lock catch steel pipe piles are locked; sequentially carrying out the steps until all the construction of the lock catch steel pipe piles is completed;
the method for closing the inner side of the side groove (12) comprises the following steps: selecting a PVC pipe (5) matched with the inner diameter of the concave pipe (2), filling and sealing the PVC pipe (5), then plugging the PVC pipe (5) into the concave pipe (2) until the PVC pipe (5) is completely filled in the concave pipe (2), and sealing the upper end and the lower end of the PVC pipe (5) by using a plug;
the method for closing the outside of the lateral groove (12) comprises the following steps: bending one iron sheet (7) into an arc-shaped structure, welding and fixing two sides of the iron sheet (7) on the side part of the main pipe (1), and enabling the end surface of the arc-shaped inner side of the iron sheet (7) to be attached to the outer side of the side groove (12) to seal the side groove (12);
the method for filling and sealing the PVC pipe (5) comprises the following steps: filling coarse sand (6) into the PVC pipe (5), and sealing the upper end and the lower end of the PVC pipe (5) by using plugs;
the method for cutting the side groove (12) by using a cutter comprises the following steps: welding a cutting knife on the grab bucket, inserting the cutting knife into the side groove (12), vertically moving the cutting knife to scratch the iron sheet (7) and the PVC pipe (5), and manually cleaning fragments of the PVC pipe (5) drifting out of the concave pipe (2);
the method for closing the bottom opening of the concave pipe (2) comprises the following steps: a pocket bottom plate (4) is welded at the bottom opening of the concave pipe (2), and the pocket bottom plate (4) is larger than the bottom opening of the concave pipe (2) to completely seal the bottom opening of the concave pipe (2);
after the lock catch steel pipe piles are put down in place in the grooves, a sand bag (10) is backfilled on the part, exceeding the bottom opening of the concave pipe (2), of the pocket bottom plate (4);
before constructing the adjacent lock-catch steel pipe piles, the sand bags (10) backfilled on the pocket bottom plates (4) are grabbed.
2. The method for constructing a shackled steel pipe pile according to claim 1, wherein: the method comprises the following steps: 1), fixing the concave pipe (2) and the convex pipe (3) on the side part of the main pipe (1) in a welding way, and welding a pocket bottom plate (4) at the opening at the bottom of the concave pipe (2);
2) Filling coarse sand (6) into the PVC pipe (5), and sealing the upper end and the lower end of the PVC pipe (5) by using plugs;
3) The filled and sealed PVC pipe (5) is plugged into the concave pipe (2) to fill and seal the inner side of the side groove (12) on the concave pipe (2);
4) Bending the iron sheet (7) into an arc-shaped structure, spot-welding thin steel bars (8) on two sides, and welding and fixing the thin steel bars on the side part of the main pipe (1) to enable the arc-shaped inner side of the iron sheet (7) to be tightly attached to the outer side of the side groove (12) to seal the outer side of the side groove (12);
5) Marking the position of a groove section on the finished guide wall (9), slotting, putting down a lock catch steel pipe pile to a set position, backfilling a sandbag (10) on the pocket bottom plate (4), and pouring underwater concrete to a set elevation;
6) Before the construction of the locking steel pipe pile of the next groove section, grabbing the sandbags (10) on the pocket bottom plates (4) of the adjacent constructed locking steel pipe piles;
7) Welding a cutting knife on the grab bucket, inserting the cutting knife into a side groove (12) of a concave pipe (2) of the constructed lock catch steel pipe pile, scratching the PVC pipe (5) and an iron sheet (7), and manually cleaning floating fragments of the PVC pipe (5);
8) And hoisting the locking steel pipe piles of the next groove section to enable the convex pipe (3) to extend into the concave pipe (2) with the side groove (12) cut open, locking two adjacent locking steel pipe piles, and sequentially performing the locking and the hoisting until all the locking steel pipe piles are constructed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111224433.1A CN113897947B (en) | 2021-10-19 | 2021-10-19 | Construction method and construction structure of lock catch steel pipe pile |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111224433.1A CN113897947B (en) | 2021-10-19 | 2021-10-19 | Construction method and construction structure of lock catch steel pipe pile |
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| Publication Number | Publication Date |
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| CN113897947A CN113897947A (en) | 2022-01-07 |
| CN113897947B true CN113897947B (en) | 2023-02-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111224433.1A Active CN113897947B (en) | 2021-10-19 | 2021-10-19 | Construction method and construction structure of lock catch steel pipe pile |
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54125816A (en) * | 1978-03-22 | 1979-09-29 | Kubota Ltd | Steel pipe sheet pile |
| JP2015132059A (en) * | 2014-01-10 | 2015-07-23 | 前田建設工業株式会社 | joint structure of steel pipe sheet pile |
-
2021
- 2021-10-19 CN CN202111224433.1A patent/CN113897947B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54125816A (en) * | 1978-03-22 | 1979-09-29 | Kubota Ltd | Steel pipe sheet pile |
| JP2015132059A (en) * | 2014-01-10 | 2015-07-23 | 前田建設工業株式会社 | joint structure of steel pipe sheet pile |
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| Publication number | Publication date |
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| CN113897947A (en) | 2022-01-07 |
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