CN210013107U - Stay cable and bridge tower anchoring structure - Google Patents
Stay cable and bridge tower anchoring structure Download PDFInfo
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- CN210013107U CN210013107U CN201920586515.2U CN201920586515U CN210013107U CN 210013107 U CN210013107 U CN 210013107U CN 201920586515 U CN201920586515 U CN 201920586515U CN 210013107 U CN210013107 U CN 210013107U
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Abstract
The utility model relates to a stay cable and bridge tower anchoring structure, which comprises cast steel anchor heads at two sides and a connecting pull plate in the middle; the cast steel anchor head main body is an anchor pipe with the top inclined inwards, and two vertical and parallel pull plate joints horizontally extend inwards along the tangential direction of the outer diameter of the wall of the anchor pipe; the connecting pull plate is vertically arranged, and two ends of the connecting pull plate are respectively butted with pull plate joints of the cast steel anchor heads on two sides. The utility model discloses a cast steel anchor head one shot casting shaping, then fix with being connected the arm-tie, form a novel steel anchor roof beam structure, compare original all-welded steel anchor roof beam, simple structure and atress are clear and definite, have avoided a large amount of weldment work, and the structure size can be adjusted according to the atress needs are nimble, and fatigue resistance can be good.
Description
Technical Field
The utility model belongs to the technical field of bridge engineering, concretely relates to suspension cable and bridge tower anchor structure.
Background
The weight of the bridge span structure of the cable-stayed bridge and the load on the bridge are mostly transmitted to the bridge tower through the stay cable, and the anchoring structure of the stay cable and the bridge tower is a core component of the cable-stayed bridge. The method for anchoring the stayed cable and the bridge tower is usually characterized by comprising circumferential prestress, a steel anchor box and a steel anchor beam, wherein the steel anchor beam is the main method for anchoring the stayed cable and the bridge tower of the large-span cable-stayed bridge in recent years. The anchoring structure effectively reduces the level of tensile stress generated by the horizontal component of the inclined stay cable on the concrete tower wall under the normal use condition in a mode of bearing the horizontal force of the stay cable by the anchoring structure, and avoids the arrangement of the annular prestressed tendons. However, the steel anchor beam is formed by welding all plates, and particularly, the anchor head part has the defects of large steel plate thickness, narrow space, more welding joints, large welding stress, difficult welding deformation control and the like, so that the manufacturing cost of the anchor head position of the steel anchor beam is high, and the quality is difficult to control. In addition, the hoisting weight of the steel anchor beam is large, and the type selection of the cable tower construction tower crane is often controlled by the hoisting weight of the steel anchor beam. The weight of the anchor head of one welded steel anchor beam is about 3000-4000 kg, and the weight of the whole steel anchor beam anchoring structure reaches 16000-20000 kg. Therefore, a new structure for anchoring a stay cable and a pylon, which has a simple structure, is easy to manufacture, and uses a small amount of steel, is required.
Disclosure of Invention
The utility model provides a suspension cable and bridge tower anchor structure has overcome the welding anchor head structure that exists among the original steel anchor beam anchor structure complicated, make the degree of difficulty big, the material quantity is many and fatigue resistance can subalternation shortcoming.
The utility model discloses the technical scheme who adopts does:
the utility model provides a suspension cable and bridge tower anchor structure which characterized in that:
comprises cast steel anchor heads at two sides and a connecting pull plate in the middle;
the cast steel anchor head main body is an anchor pipe with the top inclined inwards, and two vertical and parallel pull plate joints horizontally extend inwards along the tangential direction of the outer diameter of the wall of the anchor pipe;
the connecting pull plate is vertically arranged, and two ends of the connecting pull plate are respectively butted with pull plate joints of the cast steel anchor heads on two sides.
The anchor pipe, the pull plate joint, the bearing plate, the baffle plate and the bottom plate are integrally cast.
The outside end of the anchor pipe is provided with a vertical baffle, and the shape of the opening of the baffle is arranged according to the size of the inner wall of the anchor pipe.
The bottom surface of the bottom end of the anchor pipe is horizontal, and a horizontal bottom plate is arranged.
The top end of the anchor pipe orifice is provided with a perforated bearing plate which is vertical to the center line of the anchor pipe;
when the area of the bearing plate is larger than the area of the pipe orifice of the anchor pipe, the opening of the bearing plate is connected with the inner wall of the anchor pipe in a direct-current mode, and the outer edge of the bearing plate is in arc transition with the outer wall of the anchor pipe;
when the area of the bearing plate is equal to the area of the opening of the anchor pipe, the outer edge of the bearing plate is in direct connection with the outer wall of the anchor pipe, and the opening of the bearing plate and the inner wall of the anchor pipe are in arc transition.
The connecting pulling plate is of a strip-shaped plate structure and can also be of a box-shaped structure.
The connection pulling plate is in butt joint with the pulling plate joint by welding;
or the connection pulling plate and the pulling plate joint are in bolted butt joint.
The anchor pipe is in a circular pipe, a square pipe or a polygonal pipe structure.
The utility model has the advantages of it is following:
the utility model discloses a cast steel anchor beam anchor structure of steel anchor head, both sides anchor head position is with cast steel one shot casting shaping, adopt the arm-tie to connect both sides anchor head, form a novel steel anchor beam structure, compare original all-welded steel anchor beam, simple structure and atress are clear and definite, have avoided a large amount of weldment work, and the structure size can be adjusted according to the atress needs are nimble, and fatigue resistance can be good, and 3D prints the mould technique and can guarantee that the accurate atress angle that satisfies the suspension cable of anchor structure. Compared with an all-welded anchor head, the steel consumption of the cast steel anchor head is reduced by about 20-30%.
Drawings
Fig. 1 is a front view of embodiment 1 of the present invention;
fig. 2 is a cross-sectional view of an anchor head part in embodiment 1 of the present invention;
fig. 3 is a front view of embodiment 2 of the present invention;
fig. 4 is a cross-sectional view of the anchor head portion according to embodiment 3 of the present invention.
Fig. 5 is a perspective view of the anchor head portion according to embodiment 1 of the present invention.
Fig. 6 is an elevation view of the anchor head portion according to embodiment 1 of the present invention.
Fig. 7 is a plan view of an anchor head portion according to embodiment 1 of the present invention.
In the figure, 1-cast steel anchor head, 2-connecting pull plate, 3-splicing plate, 4-bearing plate, 5-pull plate joint, 6-bottom plate, 7-baffle plate and 8-anchor pipe.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to a suspension cable and bridge tower anchor structure seeks the clear and definite anchor structure in power route through entity unit topological optimization, carries out finite element atress analysis to the shape after the improvement again, obtains ultimate anchor structure form, cast steel anchor head 1 and middle connection arm-tie 2 including both sides. The outside of cast steel anchor head 1 is the top inwards slope's anchor pipe 8, and anchor pipe 8 pipe wall inwards extends the tangent two vertical parallel flaky arm-tie joints 5 that are extended. The connecting pull plate 2 is vertically arranged, and two ends of the connecting pull plate are respectively butted and fixed with the pull plate joints 5 of the cast steel anchor heads 1 at two sides.
The anchor pipe 8 can be a circular pipe, a square pipe or a polygonal pipe structure. The outer side of the bottom end of the anchor pipe 8 is vertical, and a baffle 7 with an opening in direct connection with the inner wall of the anchor pipe 8 is arranged at the pipe orifice. The bottom surface level of 8 bottoms of anchor pipes to be provided with horizontally bottom plate 6, undertake the vertical pressure of anchor pipe transmission, the bottom plate 6 both sides set up the bolt hole, can select suitable opportunity according to structure atress needs to fix this bottom plate 6 and for the bolt of steel bracket roof.
The plane of the top end orifice of the anchor pipe 8 is vertical to the axial direction of the anchor pipe, and the orifice is provided with a perforated bearing plate 4. The area of the bearing plate 4 is larger than that of the pipe orifice of the anchor pipe 8, the opening of the bearing plate 4 is connected with the inner wall of the anchor pipe 8 in a direct mode, and the outer edge of the bearing plate 4 is in arc transition with the outer wall of the anchor pipe 8; or the area of the pressure bearing plate 4 is equal to the area of the pipe orifice of the anchor pipe 8, the outer edge of the pressure bearing plate 4 is in direct connection with the outer wall of the anchor pipe 8, and the opening of the pressure bearing plate 4 is in circular arc transition with the inner wall of the anchor pipe 8.
The connecting pull plate 2 is used as a tension member to balance horizontal force caused by the stay cables on two sides, is of a strip-shaped plate structure, is vertically and parallelly provided with two pieces, and is respectively butted and fixed with the pull plate joints 5 on two sides; or the connecting pull plate 2 is of a box-shaped structure and is respectively butted and fixed with the pull plate joints 5 at the two sides.
The connecting pulling plate 2 and the pulling plate joint 5 are directly welded and fixed; or the connecting pulling plate 2 and the pulling plate joint 5 are additionally provided with the splicing plate 3 through the outer side and fixed through the bolt.
The anchor pipe 8, the connecting pull plate 2, the bearing plate 4 and the baffle 7 are integrally cast, and the anchor head part is integrally cast by a 3D printing die, so that the shape of a casting die can be accurately controlled, and the requirements of different space angles of the stay cable are met.
The anchor head parts are arranged in pairs, and during hoisting, the anchor heads can be respectively hoisted and then the connecting pull plate and the anchor heads are connected into a whole, and the anchor heads and the pull plate can also be connected into a whole for hoisting. The anchor head part is not provided with stiffening ribs, the wall thickness of the anchor head is equal or thickened according to the stress requirement, the anchor head part is adjusted according to the angle of the stay cable, but the bearing surface is always vertical to the axis of the stay cable.
The utility model discloses there are following several kinds of realization forms:
example 1:
the bearing plate 4 is a rectangular plate with the side length of 490-730 mm and the thickness of 80-100 mm, and the diameter of the middle opening is 295-430 mm. The anchor pipe 8 is a hollow cylinder, the wall thickness is adjusted according to the stress requirement, the diameter of the outer wall is 455-630 mm, the diameter of the inner wall is unchanged, and the outer wall and the edge of the bearing plate 4 are in arc transition with the radius of 50 mm. In the horizontal direction, the edge of the anchor pipe 8 and the pulling plate joint 5 adopts circular arc transition, and the radius of the transition circular arc is not less than 300 mm. The pulling plate joint 5 is vertical to the horizontal plane, the thickness of the pulling plate joint gradually changes from 80mm to 40mm, and 9-12 bolt holes M22-M30 are formed and used for being bolted with the connecting pulling plate 2. The size of the bottom plate 6 needs to be matched with that of a steel corbel top plate of the tower wall.
Example 2:
the bearing plate 4 is a rectangular plate with the side length of 490-730 mm and the thickness of 80-100 mm, and the diameter of the middle opening is 295-430 mm. The anchor pipe 8 is a hollow cylinder, the wall thickness is adjusted according to the stress requirement, the diameter of the outer wall is 455-630 mm, the diameter of the inner wall is unchanged, and the outer wall and the edge of the bearing plate 4 are in arc transition with the radius of 50 mm. In the horizontal direction, the edge of the anchor pipe 8 and the pulling plate joint 5 adopts circular arc transition, and the radius of the transition circular arc is not less than 300 mm. The pulling plate joint 5 is vertical to the horizontal plane, the thickness of the pulling plate joint is gradually changed from 80mm to 40mm, the pulling plate 2 and the pulling plate joint 5 are connected for butt welding, and the welding seam is required to be a full penetration welding seam. The size of the bottom plate 6 needs to be matched with that of a steel corbel top plate of the tower wall.
Example 3:
the bearing plate 4 is a rectangular plate with the side length of 490-730 mm and the thickness of 80-100 mm, and the diameter of the middle opening is 295-430 mm. The anchor pipe 8 is a hollow cylinder and can also be a hollow cube, the wall thickness can be adjusted according to the stress requirement, the diameter of the outer wall is unchanged, the diameter of the inner wall is 395 mm-530 mm, and the inner wall of the anchor pipe and the chamfer of the pressure bearing plate 4 are in arc transition with the radius of 50 mm. In the horizontal direction, the edge of the anchor pipe 8 and the pulling plate joint 5 adopts circular arc transition, and the radius of the circular arc is not less than 300 mm. The pulling plate joint 5 is vertical to the horizontal plane, the thickness of the pulling plate joint gradually changes from 80mm to 40mm, and 9-12 bolt holes M22-M30 are formed and used for being bolted with the connecting pulling plate 2. The size of the bottom plate 6 needs to be matched with that of a steel corbel top plate of the tower wall.
Example 4:
the bearing plate 4 is a rectangular plate with the side length of 490-730 mm and the thickness of 80-100 mm, and the diameter of the middle opening is 295-430 mm. The anchor pipe 8 is a hollow cylinder and can also be a hollow cube, the wall thickness can be adjusted according to the stress requirement, the diameter of the outer wall is unchanged, the diameter of the inner wall is 395 mm-530 mm, and the inner wall of the anchor pipe and the chamfer of the pressure bearing plate 4 are in arc transition with the radius of 50 mm. In the horizontal direction, the edge of the anchor pipe 8 and the pulling plate joint 5 adopts circular arc transition, and the radius of the circular arc is not less than 300 mm. The pulling plate joint 5 is vertical to the horizontal plane, the thickness of the pulling plate joint is gradually changed from 80mm to 40mm, the pulling plate 2 and the pulling plate joint 5 are connected for butt welding, and the welding seam is required to be a full penetration welding seam. The size of the bottom plate 6 needs to be matched with that of a steel corbel top plate of the tower wall.
The content of the present invention is not limited to the examples, and any equivalent transformation adopted by the technical solution of the present invention is covered by the claims of the present invention by those skilled in the art through reading the present invention.
Claims (8)
1. The utility model provides a suspension cable and bridge tower anchor structure which characterized in that:
comprises cast steel anchor heads (1) at two sides and a connecting pull plate (2) in the middle;
the main body of the cast steel anchor head (1) is an anchor pipe (8) with the top inclined inwards, and two vertical and parallel pull plate joints (5) horizontally extend inwards along the tangential direction of the outer diameter of the pipe wall of the anchor pipe (8);
the connecting pull plate (2) is vertically arranged, and two ends of the connecting pull plate are respectively butted with pull plate joints (5) of the cast steel anchor heads (1) at two sides.
2. A stay cable and pylon anchoring arrangement as in claim 1, wherein:
the anchor pipe (8), the pull plate joint (5), the bearing plate (4), the baffle plate (7) and the bottom plate (6) are integrally cast.
3. A stay cable and pylon anchoring arrangement as in claim 2, wherein:
the outer side end of the anchor pipe (8) is provided with a vertical baffle (7), and the shape of the opening of the baffle is set according to the size of the inner wall of the anchor pipe (8).
4. A stay cable and pylon anchoring arrangement as in claim 2, wherein:
the bottom surface of the bottom end of the anchor pipe (8) is horizontal, and a horizontal bottom plate (6) is arranged.
5. A stay cable and pylon anchoring arrangement as in claim 2, wherein:
the top end of the pipe orifice of the anchor pipe (8) is provided with a perforated bearing plate (4), and the bearing plate is vertical to the center line of the anchor pipe;
when the area of the bearing plate (4) is larger than the area of the pipe orifice of the anchor pipe (8), the opening of the bearing plate (4) is in direct connection with the inner wall of the anchor pipe (8), and the outer edge of the bearing plate (4) and the outer wall of the anchor pipe (8) adopt circular arc transition;
when the area of the bearing plate (4) is equal to the area of the pipe orifice of the anchor pipe (8), the outer edge of the bearing plate (4) is in direct connection with the outer wall of the anchor pipe (8), and the opening of the bearing plate (4) is in circular arc transition with the inner wall of the anchor pipe (8).
6. A stay cable and pylon anchoring arrangement as in claim 2, wherein:
the connecting pulling plate (2) is of a strip-shaped plate structure and can also be of a box-shaped structure.
7. A stay cable and pylon anchoring arrangement as in claim 2, wherein:
the connecting pulling plate (2) is in butt joint with the pulling plate joint (5) by welding;
or the connection pulling plate (2) and the pulling plate joint (5) adopt bolt butt joint.
8. A stay cable and pylon anchoring arrangement as in claim 2, wherein:
the anchor pipe (8) is in a circular pipe, square pipe or polygonal pipe structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920586515.2U CN210013107U (en) | 2019-04-26 | 2019-04-26 | Stay cable and bridge tower anchoring structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920586515.2U CN210013107U (en) | 2019-04-26 | 2019-04-26 | Stay cable and bridge tower anchoring structure |
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| CN210013107U true CN210013107U (en) | 2020-02-04 |
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| CN201920586515.2U Active CN210013107U (en) | 2019-04-26 | 2019-04-26 | Stay cable and bridge tower anchoring structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972497A (en) * | 2019-04-26 | 2019-07-05 | 中交第一公路勘察设计研究院有限公司 | Suspension cable and bridge tower anchoring structure |
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2019
- 2019-04-26 CN CN201920586515.2U patent/CN210013107U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109972497A (en) * | 2019-04-26 | 2019-07-05 | 中交第一公路勘察设计研究院有限公司 | Suspension cable and bridge tower anchoring structure |
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