CN219773007U - Water intaking head construction fore shaft steel-pipe pile cofferdam - Google Patents
Water intaking head construction fore shaft steel-pipe pile cofferdam Download PDFInfo
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- CN219773007U CN219773007U CN202223119232.8U CN202223119232U CN219773007U CN 219773007 U CN219773007 U CN 219773007U CN 202223119232 U CN202223119232 U CN 202223119232U CN 219773007 U CN219773007 U CN 219773007U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000010276 construction Methods 0.000 title claims abstract description 42
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 170
- 239000010959 steel Substances 0.000 claims abstract description 170
- 239000004570 mortar (masonry) Substances 0.000 claims description 16
- 239000000945 filler Substances 0.000 claims description 8
- 239000002689 soil Substances 0.000 description 6
- 238000003466 welding Methods 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 239000004927 clay Substances 0.000 description 4
- 238000005086 pumping Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910001294 Reinforcing steel Inorganic materials 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 210000001503 joint Anatomy 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 239000002352 surface water Substances 0.000 description 1
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Abstract
The utility model relates to a locking steel pipe pile cofferdam for water intake head construction. The utility model relates to a locking steel pipe pile cofferdam for water intake head construction, which comprises a locking steel pipe pile, a ring beam and an inner support. The square frame body structure is enclosed by the fore shaft piles buckled in pairs to form the fore shaft steel pipe pile, the ring beam is fixed in the fore shaft steel pipe pile, and meanwhile, the ring beam is supported by the inner support, so that the structure is firm, the stress is uniform, the water can be effectively prevented, and water intake or other construction can be conveniently carried out in the fore shaft steel pipe pile. Guide posts are respectively arranged on two sides of the buckling connection plate, so that when the fore shaft pipe of two adjacent fore shaft piles is buckled with the buckling connection plate, the buckling connection plate is matched with the opening of the fore shaft pipe, and the guide posts are matched with the inner side wall of the opening of the fore shaft pipe; the buckling connection plate is tightly buckled with the fore shaft pipe, so that the waterproof and plugging performance between fore shaft piles is improved.
Description
Technical Field
The utility model relates to the technical field of water intake head construction, in particular to a locking steel pipe pile cofferdam for water intake head construction.
Background
And (3) cofferdam: the temporary enclosure structure is built for building permanent water facilities in water engineering construction.
In the construction of the water intake head, the water intake head is positioned below the surface water level, and a steel pipe pile cofferdam can be adopted in a river with deeper water and larger flow velocity. The steel pipe pile cofferdam not only can prevent water and enclose water, but also can play a role in supporting a foundation pit. The construction process of the steel pipe pile cofferdam is simple, the construction period is saved, the steel pipe pile cofferdam can be recycled, the cost is low, but the existing steel pipe pile cofferdam has high construction difficulty due to the complex locking structure, the locking strength of the existing steel pipe pile cofferdam is low, the structural stability is poor, the steel pipe pile cofferdam is easy to deform under the action of external water pressure, and the leakage blocking performance is poor; the built cofferdam structure is not firm, the waterproof effect can not be effectively solved, and the construction progress and the construction cost are affected.
Disclosure of Invention
The utility model aims to provide a locking steel pipe pile cofferdam for water intake construction, which has the advantages of firm structure, uniform stress, effective water resistance and convenience in water intake or other construction in the locking steel pipe pile.
The water taking head construction fore shaft steel pipe pile cofferdam comprises fore shaft steel pipe piles, ring beams and an inner support;
the locking port steel pipe pile is of a square frame body structure, and comprises a plurality of locking port piles; the locking piles are mutually buckled in pairs to form a square frame structure; the locking piles comprise main steel pipes, locking pipes and buckling connecting plates; the locking pipe and the buckling connecting plate are respectively connected to two sides of the main steel pipe; an opening is axially formed in the side wall of one side, far away from the main steel pipe, of the fore shaft pipe; guide posts are respectively arranged on two sides of the buckling connection plate, and buckling grooves are formed between one end, close to the main steel pipe, of the buckling connection plate and the guide posts; the fore shaft pipe and the buckling connection plate of two adjacent fore shaft piles can be buckled, and the buckling groove is matched with the opening of the fore shaft pipe and the guide post is matched with the inner side wall of the opening of the fore shaft pipe during buckling;
the ring beam is arranged on the inner side of the locking steel pipe pile, and is square;
the internal support comprises a pair of steel pipes and inclined struts, the pair of steel pipes are connected to the middle parts of two opposite sides of the ring beam, and the inclined struts are connected to four corners of two adjacent sides of the ring beam.
The square frame body structure is formed by surrounding the locking port piles which are buckled in pairs, the ring beam is fixed in the locking port steel pipe pile, and meanwhile, the ring beam is supported by the inner support, so that the square frame body structure is firm in structure and uniform in stress, can effectively prevent water, and is convenient for water intake or other construction in the locking port steel pipe pile. Guide posts are respectively arranged on two sides of the buckling connection plate, so that when the fore shaft pipe of two adjacent fore shaft piles is buckled with the buckling connection plate, the buckling connection plate is matched with the opening of the fore shaft pipe, and the guide posts are matched with the inner side wall of the opening of the fore shaft pipe; the buckling connection plate is tightly buckled with the fore shaft pipe, so that the waterproof and plugging performance between fore shaft piles is improved.
Meanwhile, the buckling groove is matched with the opening of the fore shaft pipe, and the guide post is matched with the inner side wall of the opening of the fore shaft pipe. When the construction is buckled, the guide post is positioned in the fore shaft pipe and matched with the inner side wall of the opening of the fore shaft pipe, and has good guide effect, so that the fore shaft pipe between two adjacent fore shaft piles is accurately matched with the buckling connecting plate, the situation that the through groove is expanded due to the deflection of the buckling connecting plate relative to the fore shaft pipe is prevented, and the waterproof and leak-stopping performance of the fore shaft pipe is enhanced; in addition, can also further strengthen sealing effectiveness and intensity of buckling department between the fore shaft stake, prevent simultaneously when the construction the buckling department between the fore shaft steel-pipe pile receives outside water or the too big of soil's pressure, especially the middle part that is located fore shaft steel-pipe pile opposite both sides receives outside pressure too big, leads to strong buckling department between the fore shaft steel-pipe pile to leak because of intensity and sealing effectiveness are not enough.
Further, a water stop filler is arranged in the fore shaft pipe. So that when the fore shaft pipe is buckled with the buckling connecting plate, the gap in the fore shaft pipe is sealed, and the waterproofness is further enhanced.
Further, the ring beam and the fore shaft steel pipe pile are connected through a mortar shoveling pad. And a gap exists between the ring beam and the fore shaft steel pipe pile, the gap is formed by pouring mortar, the mortar is used for shoveling and cushioning, and the mortar is used for connecting and fixing the ring beam and the fore shaft steel pipe pile.
Further, limiting plates are arranged at two ends of the buckling connecting plate, the limiting plates, close to one end of the main steel pipe, of the buckling connecting plate are welded with the main steel pipe, and buckling grooves are formed between the buckling connecting plate and the guide posts. The limiting plate of one end of the main steel pipe is located in the fore shaft pipe when being buckled, the buckling connecting plate can be directly or indirectly connected with the inner side wall of the fore shaft pipe tightly under the extrusion action of the water stop filler in the fore shaft pipe, the tight connectivity of the buckling connecting plate and the fore shaft pipe is enhanced, and the connection strength of the buckling part between the fore shaft steel pipe piles is enhanced.
Further, the ring beams are divided into a first layer of ring beams, a second layer of ring beams and a third layer of ring beams from top to bottom; the opposite supporting steel pipes are divided into a first layer of inner supporting opposite supporting steel pipes, a second layer of inner supporting opposite supporting steel pipes and a third layer of inner supporting steel pipes from top to bottom; the diagonal bracing is divided into a first layer of diagonal bracing, a second layer of diagonal bracing and a third layer of diagonal bracing from top to bottom;
the two ends of the first layer internal support opposite bracing steel pipe, the two ends of the second layer internal support opposite bracing steel pipe and the two ends of the third layer internal support opposite bracing steel pipe are respectively connected with the middle parts of the two opposite sides of the first layer ring beam, the second layer ring beam and the third layer ring beam; the two ends of the first layer diagonal bracing, the two ends of the second layer diagonal bracing and the two ends of the third layer diagonal bracing are respectively connected to four corners of two adjacent sides of the first layer ring beam, the second layer ring beam and the third layer ring beam.
The steel pipes and the diagonal braces are respectively connected with the ring beams of each layer, and the external pre-jacking force of the connecting nodes of the ring beams can be provided, so that the ring beams can bear larger external force, the ring beams are further dispersed in stress, and the stress of the fore shaft steel pipe pile is further dispersed.
Further, the inner support further comprises a vertical upright post support; the vertical column supports the vertical arrangement, and is connected with the middle of the first layer internal support opposite supporting steel pipe, the middle of the second layer internal support opposite supporting steel pipe and the middle of the third layer internal supporting steel pipe from top to bottom respectively. Through the setting of vertical stand support 5, reinforcing structural strength.
Further, a reinforced steel plate is welded between the fore shaft pipe and the main steel pipe. Through the setting of strengthening the steel sheet, strengthen the fore shaft pipe with the joint strength of main steel pipe, further strengthen the intensity of fore shaft steel-pipe pile.
The water taking head construction locking steel pipe pile cofferdam also comprises a protection shed, and the protection shed is arranged at the top of the locking steel pipe pile. Through the arrangement of the protective shed, the protective shed can be used in construction under the environments of lower temperature in winter or higher temperature in summer or other conditions, and construction staff are protected.
For a better understanding and implementation, the present utility model is described in detail below with reference to the drawings.
Drawings
FIG. 1 is a schematic diagram of a construction locking steel pipe pile cofferdam structure of a water intake head;
FIG. 2 is a schematic view in section A-A of FIG. 1;
FIG. 3 is an enlarged schematic view of FIG. 1 at B;
FIG. 4 is an enlarged schematic view of FIG. 1 at C;
FIG. 5 is a schematic view showing the connection of the partial locking piles 11 of FIG. 3;
FIG. 6 is a schematic view showing the connection of the partial locking piles 11 of FIG. 4;
FIG. 7 is a schematic view of the snap tube and snap connection plate in a snap connection;
FIG. 8 is a schematic structural view of a fore shaft tube;
fig. 9 is a schematic structural view of the fastening connection plate.
Detailed Description
Example 1
Referring to fig. 1, a water intake head construction fore shaft steel pipe pile cofferdam comprises fore shaft steel pipe piles 1, ring beams 2 and an inner support.
Referring to fig. 1-4, the fore shaft steel pipe pile 1 is in a square frame structure, and the fore shaft steel pipe pile 1 comprises a plurality of fore shaft piles 11; the locking piles 11 are mutually buckled in pairs to form a square frame structure; referring to fig. 5-6, the plurality of fore shaft piles 11 each comprise a main steel pipe 111, a fore shaft pipe 112, and a buckling connection plate 113; the locking pipe 112 and the buckling connection plate 113 are respectively connected to the two sides of the main steel pipe 111; referring to fig. 8, an opening 1121 is axially formed in a side wall of the locking pipe 112 on a side far from the main steel pipe 111; referring to fig. 9, guide posts 1131 are respectively disposed on two sides of the buckling connection plate 113, and a buckling groove 1133 is formed between one end of the buckling connection plate 113, which is close to the main steel pipe, and the guide posts 1131; the fore shaft pipe 112 and the buckling connection plate 113 of two adjacent fore shaft piles 11 can be buckled, and the buckling groove 1133 is matched with the opening 1121 of the fore shaft pipe 112 and the guide post 1131 is matched with the inner side wall of the opening 1121 of the fore shaft pipe 112 during buckling;
referring to fig. 1, a ring beam 2 is disposed inside a locked steel pipe pile 1, and the ring beam 2 is square.
Referring to fig. 1, the inner support includes a pair of steel pipes 3 and diagonal braces 4, the pair of steel pipes 3 are connected to the middle parts of the two opposite sides of the ring beam 2, and the diagonal braces 4 are connected to the four corners of the two adjacent sides of the ring beam 2.
Referring to fig. 1, the square frame structure is formed by enclosing the fore shaft piles 11 buckled in pairs to form the fore shaft steel pipe pile 1, the ring beam 2 is fixed in the fore shaft steel pipe pile 1, and meanwhile, the ring beam 2 is supported by the inner support, so that the structure is firm, the stress is uniform, the water can be effectively prevented, and the water intake head 10 or other construction can be conveniently carried out in the fore shaft steel pipe pile 1. The guide posts 1131 are respectively arranged on the two sides of the buckling connection plate 113, so that when the fore shaft 112 of two adjacent fore shaft piles 11 and the buckling connection plate 113 are buckled, the buckling grooves 1133 at the buckling connection plate 113 are matched with the openings 1121 of the fore shaft 112, and the guide posts 1131 are matched with the inner side walls at the openings 1121 of the fore shaft 112; the buckling connection plate 113 and the fore shaft pipe 112 are tightly buckled, so that the waterproof and plugging performance between fore shaft piles 11 is improved.
While the snap fit groove 1133 mates with the opening 1121 of the locking collar 112 and the guide post 1131 mates with the inside wall of the opening 1121 of the locking collar 112. When the construction is buckled, the guide column 1131 is positioned in the fore shaft pipe 112 and is matched with the inner side wall of the opening 1121 of the fore shaft pipe 112, the guide column 1131 plays a good guide role, the fore shaft pipe 112 between two adjacent fore shaft piles 11 and the buckling connection plate 113 can be accurately matched, the situation that the through groove 3 is expanded due to the deflection of the buckling connection plate 113 relative to the fore shaft pipe 2 is prevented, and the waterproof plugging performance of the fore shaft pipe 112 is enhanced; in addition, the sealing effectiveness and strength of the buckling parts between the fore shaft piles 11 can be further enhanced, and meanwhile, when the buckling parts between the fore shaft piles 11 of the fore shaft steel pipe piles 1 are subjected to overlarge pressure of external water or soil during construction, particularly, the middle parts positioned on two opposite sides of the fore shaft steel pipe piles 1 are subjected to overlarge external pressure, so that the buckling parts between the fore shaft piles 11 are leaked due to insufficient strength and sealing effectiveness.
The fore shaft piles 11 at four corners of the fore shaft steel pipe pile 1 are fore shaft corner piles, and the fore shaft pipe 112 and the buckling connection plate 113 are vertically connected to two sides of the main steel pipe 111. The fore shaft piles 11 positioned between the fore shaft corner piles are fore shaft tubular piles, and fore shaft pipes 112 and buckling connection plates 113 are symmetrically connected on two sides of the main steel pipe 111.
Referring to fig. 3 and 4, the ring beam 2 and the fore shaft steel pipe pile 1 are connected by a mortar shoveling pad 6. A gap exists between the ring beam 2 and the fore shaft steel pipe pile 1, and a mortar shoveling pad 6 is formed by pouring mortar in the gap, and the mortar shoveling pad is connected and fixed with the ring beam 2 and the fore shaft steel pipe pile 1. When the mortar shoveling pad 6 is poured, the ring beam 2 is assembled in the fore shaft steel pipe pile 1, and then the mortar shoveling pad 6 is formed by mortar pouring. This action makes the framework atress that is enclosed by fore shaft stake 11 knot more even, and the circle roof beam 2 also can not produce internal stress with the connection of fore shaft stake 11, and whole wholeness is stronger, can not lead to the deformation of fore shaft stake 11 mutual lock department, has maintained the inner structure stability of fore shaft steel-pipe pile 1 effectively.
The water stop filler 114 is arranged in the fore shaft pipe 112, so that when the fore shaft pipe 112 is buckled with the buckling connection plate 113, a gap in the fore shaft pipe 112 is sealed, and the water resistance is further enhanced. Mortar water stop may be selected, i.e., mortar is used as the filler for the fore shaft tube 112. The tamping clay water stopping method can also be used, namely clay and sawdust are used as main materials, and an expanding agent is added as a filler of the locking notch pipe 112, so that the tamping clay water stopping method can fully tamp when the clay sawdust mixture is used for filling, and the water stopping effect is achieved.
The two ends of the buckling connection plate 113 are provided with limiting plates 1132, the limiting plates 1132 of one end of the buckling connection plate 113, which is close to the main steel pipe 111, are welded with the main steel pipe 113, and buckling grooves 1133 are formed between the limiting plates 1132 and the guide columns 1131. The limiting plate 1132 at one end of the buckling connection plate 113 far away from the main steel pipe 111 is positioned in the fore shaft pipe 112 during buckling, and can be directly or indirectly tightly connected with the inner side wall of the fore shaft pipe 112 under the extrusion action of water stop filler in the fore shaft pipe 112, so that the tight connectivity of the buckling connection plate 113 and the fore shaft pipe 112 and the connection strength of the buckling part between the fore shaft steel pipe piles 1 are enhanced.
Referring to fig. 2, the ring beam 2 is divided into a first ring beam 21, a second ring beam 22 and a third ring beam 23 from top to bottom; the opposite bracing steel pipe 3 is divided into a first layer of inner bracing steel pipe 31, a second layer of inner bracing steel pipe 32 and a third layer of inner bracing steel pipe 33 from top to bottom; the diagonal brace 4 is divided into a first layer diagonal brace (not shown), a second layer diagonal brace (not shown) and a third layer diagonal brace (not shown) from top to bottom.
The two ends of the first layer internal support opposite bracing steel pipe 31, the two ends of the second layer internal support opposite bracing steel pipe 32 and the two ends of the third layer internal support opposite bracing steel pipe 33 are respectively connected to the middle parts of the two opposite sides of the first layer ring beam 21, the second layer ring beam 22 and the third layer ring beam 23. Preferably, the pair of bracing steel beams 2 of each layer are respectively provided with a plurality of pairs of bracing steel beams, and the pairs of bracing steel beams are respectively arranged in parallel and side by side at the middle parts of the two opposite sides of the ring beam 2 of the corresponding layer.
The two ends of the first layer diagonal bracing, the two ends of the second layer diagonal bracing and the two ends of the third layer diagonal bracing are respectively connected to four corners of two adjacent sides of the first layer ring beam, the second layer ring beam and the third layer ring beam. Preferably, each layer of ring beam 2 has 2 parallel diagonal braces 4 at four corners of two adjacent sides, and the included angle between each diagonal brace and the side surface of the ring beam 2 is 45 degrees.
The first layer ring beam 21 is formed by welding 2HN700 multiplied by 300 section steel, and the orthogonal butt joint is equal-strength groove welding; the second layer ring beam 22 and the third layer ring beam 23 are formed by welding 3HN1000 multiplied by 300 section steel, and the orthogonal butt joint is equal-strength groove welding. The first layer internal support opposite bracing steel pipes 31 are all phi 800 multiplied by 20mm steel pipes, the second layer internal support opposite bracing steel pipes 32 and the third layer internal support opposite bracing steel pipes 33 are all phi 1000 multiplied by 14mm steel pipes, and the opposite bracing steel pipes 3 and the ring beam 2 are all connected through bolts. The first layer of diagonal bracing adopts 2HN 700X 300mm shaped steel, the second layer of diagonal bracing and the third layer of diagonal bracing adopt 3HN 1000X 300mm shaped steel, and groove welding is adopted between the diagonal bracing 4 and the ring beam 2.
Through each layer to propping steel pipe 3 and bracing 4 respectively with each layer collar tie beam 2, can provide with the outside preliminary jacking force of tie node of collar tie beam 2 for collar tie beam 2 can bear bigger external force, makes collar tie beam 2 atress further disperse, and then makes the atress of fore shaft steel-pipe pile 1 further disperse.
The inner support also comprises a vertical upright post support 5; the vertical column supports 5 are vertically arranged and are respectively connected with the middle of the first layer internal support opposite-support steel pipe 31, the middle of the second layer internal support opposite-support steel pipe 32 and the middle of the third layer internal support steel pipe 33 from top to bottom. Through the setting of vertical stand support 5, reinforcing structural strength. The vertical support columns all adopt HN588 multiplied by 300.
Referring to fig. 5 to 6, a reinforcing steel plate 115 is welded between the fore shaft 112 and the main steel pipe 111. The strength of the welded seam allowance pipe 112 and the main steel pipe 111 is reinforced by the provision of the reinforcing steel plate 115, and the strength of the welded seam allowance steel pipe pile 1 is further reinforced.
Referring to fig. 2, the water intake head construction fore shaft steel pipe pile cofferdam of the present utility model further comprises a protection shed 7, wherein the protection shed 7 is arranged at the top of the fore shaft steel pipe pile 1. The protective shed 7 can be used in construction under the environments of low winter temperature or high summer temperature or other conditions, so as to protect constructors.
After the construction of the main trestle and the branch trestle is complete, referring to fig. 1, the construction of the water intake by utilizing the water intake construction locking steel pipe pile cofferdam of the utility model comprises the following steps:
setting steel pipe pile inserting and driving guide, and inserting and driving a fore shaft pile 11 on a trestle by utilizing a crawler crane to enclose a square frame structure, namely a fore shaft steel pipe pile 1; after the insertion is completed, filling a water-stopping filler into the fore shaft pipe 112;
pumping water in the steel pipe pile 1 with the locking notch under the construction normal water level to 1.0m below the high position of the first layer ring beam, and installing the first layer ring beam 21, a first layer internal support opposite support steel pipe 31 and the first layer diagonal support; a vertical supporting upright post 5 is inserted at the middle point of the first inner supporting opposite supporting steel pipe 31, and the first inner supporting opposite supporting steel pipe is supported on the vertical supporting upright post;
pumping water in the fore shaft steel pipe pile 1 to 1.0m below the high position of the second layer ring beam, and installing the second layer ring beam 22, a second layer internal support opposite bracing steel pipe 32 and a second layer diagonal bracing; supporting the second internal support opposite supporting steel pipe 32 on the vertical supporting upright 5;
pumping water in the fore shaft steel pipe pile 1 to 1.0m below the high position of the third layer ring beam, and installing the third layer ring beam 23, a third layer internal support opposite supporting steel pipe 33 and a third layer diagonal brace; supporting the third-layer internal support opposite-supporting steel pipe 32 on the vertical support upright 5;
pumping water and taking soil continuously in the locked steel pipe pile 1, excavating to a designed elevation according to the basic size of the water intake head 10, and reserving undisturbed soil on the long side of the basic of the water intake head 10;
the vertical supporting upright post 5 below the third-layer internal supporting opposite supporting steel pipe 33 is cut off; constructing a water intake head 10 foundation; dismantling the third-layer internal support opposite-support steel pipe 33 and the third-layer diagonal brace, and cutting off the vertical support upright 5 below the second-layer internal support opposite-support steel pipe 32;
continuing to construct a second layer of the main body structure of the water intake head 10; dismantling the second-layer internal support opposite-support steel pipe 32 and the second-layer diagonal support, and cutting off the vertical support upright 5 below the first-layer internal support opposite-support steel pipe 32;
continuing to construct a third layer of the main body structure of the water intake head 10; the water filling in the lock catch steel pipe pile means that the first layer internal support opposite supporting steel pipe 31 and the lower part of the first layer diagonal bracing are 1.0m; dismantling the first layer internal support opposite support steel pipe 31 and the first layer diagonal support, and dismantling the vertical support upright 5 below the first layer internal support opposite support steel pipe 31;
continuing to construct the top structure of the water intake head 10;
the ring beam 2 and the fore shaft steel pipe pile 1 are dismantled for the next use.
In this embodiment, the fore shaft pile 11 is required to be inserted and driven to a design position, that is, according to the geological survey data, the bottom rock-in of the fore shaft pile 11 on the river-core side (low soil layer side) is not less than 4.3m, and the fore shaft pile 11 on the river-shore side (high soil layer side) is not less than 4.45m.
Meanwhile, the contact position of the fore shaft pile 11 and the ring beam 2 is ensured to be in the design and reinforcement range of the fore shaft steel pipe pile 1, so that the local stress of the fore shaft steel pipe pile 1 is ensured to meet the requirement. The contact position error of the fore shaft steel pipe pile 1 and the ring beam 2 is +/-1 mm, the ring beam 2 is pumped and installed in the fore shaft steel pipe pile 1, the contact position of the fore shaft steel pipe pile 1 and each layer of ring beam is subjected to shoveling, and mortar is poured to form a mortar shoveling pad 12.
The above examples illustrate only a few embodiments of the utility model, which are described in detail and are not to be construed as limiting the scope of the utility model. It should be noted that modifications and improvements can be made by those skilled in the art without departing from the spirit of the utility model, and the utility model is intended to encompass such modifications and improvements.
Claims (8)
1. The utility model provides a water intaking head construction fore shaft steel-pipe pile cofferdam which characterized in that: comprises a locking steel pipe pile, a ring beam and an inner support;
the locking port steel pipe pile is of a square frame body structure, and comprises a plurality of locking port piles; the locking piles are mutually buckled in pairs to form a square frame structure; the locking piles comprise main steel pipes, locking pipes and buckling connecting plates; the locking pipe and the buckling connecting plate are respectively connected to two sides of the main steel pipe; an opening is axially formed in the side wall of one side, far away from the main steel pipe, of the fore shaft pipe; guide posts are respectively arranged on two sides of the buckling connection plate, and buckling grooves are formed between one end, close to the main steel pipe, of the buckling connection plate and the guide posts; the fore shaft pipe and the buckling connection plate of two adjacent fore shaft piles can be buckled, and the buckling groove is matched with the opening of the fore shaft pipe and the guide post is matched with the inner side wall of the opening of the fore shaft pipe during buckling;
the ring beam is arranged on the inner side of the locking steel pipe pile, and is square;
the internal support comprises a pair of steel pipes and inclined struts, the pair of steel pipes are connected to the middle parts of two opposite sides of the ring beam, and the inclined struts are connected to four corners of two adjacent sides of the ring beam.
2. The water intake construction locking steel pipe pile cofferdam according to claim 1, wherein: and a water stop filler is arranged in the fore shaft pipe.
3. The water intake construction locking steel pipe pile cofferdam according to claim 1, wherein: the ring beam and the locking notch steel pipe pile are connected through a mortar shoveling pad.
4. The water intake construction locking steel pipe pile cofferdam according to claim 1, wherein: the buckling connecting plate is characterized in that limiting plates are arranged at two ends of the buckling connecting plate, the limiting plates, close to one end of the main steel pipe, of the buckling connecting plate are welded with the main steel pipe, and buckling grooves are formed between the limiting plates and the guide posts.
5. The water intake construction locking steel pipe pile cofferdam according to claim 1, wherein: the ring beams are divided into a first layer of ring beams, a second layer of ring beams and a third layer of ring beams from top to bottom; the opposite supporting steel pipes are divided into a first layer of inner supporting opposite supporting steel pipes, a second layer of inner supporting opposite supporting steel pipes and a third layer of inner supporting steel pipes from top to bottom; the diagonal bracing is divided into a first layer of diagonal bracing, a second layer of diagonal bracing and a third layer of diagonal bracing from top to bottom;
the two ends of the first layer internal support opposite-bracing steel pipe, the two ends of the second layer internal support opposite-bracing steel pipe and the two ends of the third layer internal support steel pipe are respectively connected with the middle parts of the two opposite sides of the first layer ring beam, the second layer ring beam and the third layer ring beam; the two ends of the first layer diagonal bracing, the two ends of the second layer diagonal bracing and the two ends of the third layer diagonal bracing are respectively connected to four corners of two adjacent sides of the first layer ring beam, the second layer ring beam and the third layer ring beam.
6. The water intake construction locking steel pipe pile cofferdam of claim 5, wherein: the inner support further comprises a vertical upright post support; the vertical column supports the vertical arrangement, and is connected with the middle of the first layer internal support opposite supporting steel pipe, the middle of the second layer internal support opposite supporting steel pipe and the middle of the third layer internal supporting steel pipe from top to bottom respectively.
7. The water intake construction locking steel pipe pile cofferdam according to claim 1, wherein: and a reinforced steel plate is welded between the fore shaft pipe and the main steel pipe.
8. The water intake construction locking steel pipe pile cofferdam according to claim 1, wherein: still include the protection canopy, the protection canopy sets up the top of fore shaft steel-pipe pile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223119232.8U CN219773007U (en) | 2022-11-23 | 2022-11-23 | Water intaking head construction fore shaft steel-pipe pile cofferdam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223119232.8U CN219773007U (en) | 2022-11-23 | 2022-11-23 | Water intaking head construction fore shaft steel-pipe pile cofferdam |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219773007U true CN219773007U (en) | 2023-09-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223119232.8U Active CN219773007U (en) | 2022-11-23 | 2022-11-23 | Water intaking head construction fore shaft steel-pipe pile cofferdam |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219773007U (en) |
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- 2022-11-23 CN CN202223119232.8U patent/CN219773007U/en active Active
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