CN211057612U - Suspension bridge anchorage main cable strand anchoring device - Google Patents
Suspension bridge anchorage main cable strand anchoring device Download PDFInfo
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- CN211057612U CN211057612U CN201921551370.9U CN201921551370U CN211057612U CN 211057612 U CN211057612 U CN 211057612U CN 201921551370 U CN201921551370 U CN 201921551370U CN 211057612 U CN211057612 U CN 211057612U
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Abstract
The utility model relates to a suspension bridge anchorage main cable strand anchoring device, which comprises a connecting backing plate and an auxiliary backing plate on the bottom surface thereof; the longitudinal center line of the connecting base plate is provided with pull rod anchoring end openings which are arranged in a row, and two sides of the connecting base plate are symmetrically provided with prestressed steel beam anchoring end openings; the auxiliary backing plate is provided with a pull rod anchoring end hole and a prestressed steel beam anchoring end hole corresponding to the connecting backing plate, a longitudinal U-shaped groove plate is arranged at the pull rod anchoring end hole of the bottom surface of the auxiliary backing plate, and a connecting bobbin is arranged at each prestressed steel beam anchoring end hole of the bottom surface of the auxiliary backing plate. The utility model discloses an anchor multi-beam prestressing force structure on single connection backing plate to adopt supplementary backing plate to solve and connect backing plate location and U-shaped frid and satisfy pull rod construction space, finally realize the purpose of large-tonnage main push-towing rope strand anchor, the power flows smoothly, and the construction is convenient.
Description
Technical Field
The utility model belongs to the technical field of suspension bridge anchorage anchor, concretely relates to suspension bridge anchorage main push-towing rope strand anchor.
Background
The AS method for erecting the suspension bridge main cable has low requirements on hoisting and transporting equipment and a traction system, so that the AS method is particularly suitable for the suspension bridge in mountainous areas. In order to improve the construction efficiency of erecting the main cable by the AS method and reduce the size of the anchor front anchor surface, the number of strand steel wires of the suspension bridge of the main cable erected by the AS method is generally more, and reaches 400 wires or even more. The anchoring force required by erecting the main cable suspension bridge strand by the AS method is more than 3 times of that of the conventional PPWS method. With the improvement of the existing steel wire production technology, the strength of the main cable strand steel wire is gradually improved, the strength of the common PPWS method strand steel wire is improved from 1670MPa to 2100MPa, and the required anchoring force is also improved by more than 1.2 times. However, the strength of the steel strand used for the anchorage pre-stressed anchoring device is still 1860MPa, and the provision of a larger anchoring force can only be realized by increasing the number of the steel strands.
The conventional double-pull-rod single-strand prestressed steel strand anchoring structure only adopts a large anchorage device, the number of single-hole anchoring steel strands is increased, and the problems of large local stress concentration and low safety and reliability exist in the anchoring by adopting the large anchorage device. Therefore, the anchoring structure adopting the double pull rods and the multi-beam prestressed steel strands is obviously urgent to develop. The anchoring system adopts a plurality of bundles of prestressed steel strands for anchoring, the stress of a single bundle of steel strands is reduced, the specifications of selectable anchors are multiple, the process is mature, and compared with a steel frame anchoring system, the anchoring system is easier to position, and the anchoring system has the characteristics of relatively simple structure, clear stress, convenience in construction and the like. Therefore, the anchoring structure adopting the double pull rods and the multi-beam prestressed steel strands is necessary, and the problems of large-tonnage anchoring of main cable strands of a suspension bridge erected by an AS method and high-strength steel wire strand anchoring by a PPWS method can be solved more safely and reasonably.
Disclosure of Invention
The utility model aims at providing a suspension bridge anchorage main push-towing rope strand anchor device solves suspension bridge anchorage system and adopts conventional single bundle of prestressing force steel strand wires structure local stress too big, and safe and reliable degree is low, the unable problem that adapts to AS method and erects suspension bridge main push-towing rope strand large-tonnage anchor and the high-strength steel wire push-towing rope strand anchor demand of PPWS method.
The utility model discloses the technical scheme who adopts does:
the utility model provides a suspension bridge anchorage main cable strand anchor which characterized in that:
the anchoring device comprises a connecting base plate and an auxiliary base plate on the bottom surface of the connecting base plate;
the longitudinal center line of the connecting base plate is provided with pull rod anchoring end openings which are arranged in a row, and two sides of the connecting base plate are symmetrically provided with prestressed steel beam anchoring end openings;
the auxiliary backing plate is provided with a pull rod anchoring end hole and a prestressed steel beam anchoring end hole corresponding to the connecting backing plate, a longitudinal U-shaped groove plate is arranged at the pull rod anchoring end hole of the bottom surface of the auxiliary backing plate, and a connecting bobbin is arranged at each prestressed steel beam anchoring end hole of the bottom surface of the auxiliary backing plate.
Two longitudinal tension rod anchoring end holes are formed, and a pair of two, two pairs of four or three pairs of six prestressed steel beam anchoring end holes are symmetrically formed in the two sides of each prestressed steel beam anchoring end hole.
The auxiliary backing plate is provided with a lower positioning plate and a left positioning plate, the plate thickness of the lower positioning plate is 10mm, the plane size of the lower positioning plate is 20 × 30mm, and the plane size of the left positioning plate is 10 × 30 mm.
The connecting bobbin is a variable cross-section cylinder, the length of the connecting bobbin is 300 mm-500 mm, the diameter of one end of the connecting bobbin is 140mm, and the diameter of the other end of the connecting bobbin is 156 mm.
The U-shaped groove plate is a construction space of the anchoring end of the pull rod, and is 250mm deep, 270mm wide and 6mm thick.
The width of the connecting pad is 900 mm-1200 mm, the length is 750-1990 mm, and the thickness is 200 mm-300 mm;
the size of the auxiliary backing plate is 10mm larger than that of the single side of the connecting backing plate, and the thickness of the auxiliary backing plate is 25 mm.
The utility model has the advantages of it is following:
the utility model discloses an anchorage prestressed anchorage device solves AS method and erects suspension bridge main push-towing rope strand large-tonnage anchor and the PPWS method steel wire rope strand anchor problem that excels in, and the device adopts single tie-plate upper anchorage multi beam prestressing steel strand structure, and the atress is reliable, and the power flow is smooth and easy, satisfies AS method and erects suspension bridge main push-towing rope strand, the PPWS method steel wire rope strand large-tonnage anchor's that excels in needs, has the construction swiftly, the anchor stress is little, arrange advantages such AS nimble.
Drawings
Fig. 1 is an elevation view of a suspension bridge main cable strand anchoring configuration.
Fig. 2 is a comparative plan view of three tie plates.
Fig. 3 is a plan view of the auxiliary pad.
Fig. 4 is a sectional view a-a of fig. 2.
Fig. 5 is a sectional view B-B of fig. 3.
Fig. 6 is a plan view of the lower positioning plate.
Fig. 7 is a plan view of the left positioning plate.
In the figure, 1-connecting backing plate, 2-pull rod, 3-auxiliary backing plate, 4-U-shaped groove plate, 5-connecting bobbin, 6-prestressed steel beam anchoring end hole, 7-pull rod anchoring end hole, 8-lower positioning plate and 9-left positioning plate.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
The utility model relates to a suspension bridge anchorage main cable strand anchor device, the anchor device comprises a connecting backing plate 1 and an auxiliary backing plate 3 on the bottom surface thereof, the connecting backing plate 1 is a thick backing plate, the width is 900 mm-1200 mm, the length is 750-1990 mm, and the thickness is 200 mm-300 mm; the auxiliary backing plate 3 is a thin backing plate, the size of which is 10mm larger than that of the single side of the connecting backing plate 1, and the thickness of which is 25 mm.
The connecting base plate 1 is provided with pull rod anchoring end openings 7 which are arranged in a row on the longitudinal central line, and prestressed steel beam anchoring end openings 6 are symmetrically arranged on two sides. The auxiliary backing plate 3 is provided with a pull rod anchoring end opening 7 and a prestressed steel beam anchoring end opening 6 which correspond to the connecting backing plate 1, a longitudinal U-shaped groove plate 4 is arranged at the position of the pull rod anchoring end opening 7 on the bottom surface of the auxiliary backing plate 3, and a connecting bobbin 5 is arranged at the position of each prestressed steel beam anchoring end opening 6 on the bottom surface of the auxiliary backing plate 3.
The two tie rod anchoring end openings 7 are longitudinally arranged, the two pairs of the two prestressed steel beam anchoring end openings 6 are symmetrically arranged on two sides, the two pairs of the four prestressed steel beam anchoring end openings are four pairs or the three pairs of the six prestressed steel beam anchoring end openings are six pairs, the size of the circular hole needs to meet the requirements of steel beam and tie rod anchoring structures, and the size of the opening needs to be comprehensively considered with the structures of the connecting sleeve 5 and the U-shaped groove plate 4.
The auxiliary backing plate 3 is provided with a lower positioning plate 8 and a left positioning plate 9 having a plate thickness of 10mm, the lower positioning plate 8 has a planar size of 20 × 30mm, the left positioning plate 9 has a planar size of 10 × 30mm, and the lower positioning plate 8 and the left positioning plate 9 are provided to temporarily fix the connecting backing plate 1 to the auxiliary backing plate 3 during construction.
The connecting bobbin 5 is a variable cross-section cylinder with a length of 300mm to 500mm, a diameter of 140mm at one end and a diameter of 156mm at the other end, and is welded to the auxiliary backing plate 3.
The U-shaped groove plate 4 is a construction space of the anchoring end of the pull rod, is 250mm deep, 270mm wide and 6mm thick, and is provided with an auxiliary backing plate 3.
In the device, the connecting backing plate 1 is made of No. 45 forged steel, and the heat treatment hardness is 238-269 HBW; the auxiliary backing plate 3, the connecting bobbin 5 and the U-shaped groove plate 4 are made of Q235 or Q345 steel.
Finally, each anchoring system will consist of two tie rod assemblies, one set of anchoring devices and multiple sets of prestressed steel strand anchor assemblies. The single set of prestressed steel strand anchorage device adopts a phi 15-5-phi 15-20 specification prestressed steel bundle for anchorage, and adopts an anchorage structure (comprising an anchor backing plate, a spiral steel bar, an anchor head protective cap and the like) matched with the prestressed steel bundle.
Example 1
The plane size of the connecting base plate 1 is 750 × 1100mm, the thickness is 220mm, the pull rod 2 penetrates through the connecting base plate 1 to be provided with two holes, the two holes are arranged along the structural symmetry line of the connecting base plate 1, the anchoring end of the prestressed steel beam penetrates through the connecting base plate 1 to be provided with two round holes, the two round holes are symmetrically arranged on the connecting base plate 1, and the diameter of each hole meets the requirements of the pull rod 2 and the prestressed steel beam.
The plane size of the auxiliary backing plate 3 is 770 × 1120mm, the thickness is 25mm, the positions of the tension rods 2 and the prestressed steel bundles are consistent with the connecting backing plate 1, and the size of the opening needs to be comprehensively considered with the structures of the connecting sleeve 5 and the U-shaped groove plate 4.
The connecting bobbin 5 is a variable cross-section cylinder with a length of 360mm, a diameter of 136mm at one end and a diameter of 150mm at the other end.
The U-shaped groove plate 4 adopts a groove-shaped steel plate with the depth of 240mm and the width of 260mm, and the thickness is 6 mm.
Example 2
The plane size of the connecting base plate 1 is 950 × 1100mm, the thickness is 240mm, the pull rod 2 penetrates through the connecting base plate 1 to be provided with two holes, the two holes are arranged along the structural symmetry line of the connecting base plate 1, the anchoring end of the prestressed steel bundle penetrates through the connecting base plate 1 to be provided with four round holes, the four round holes are symmetrically arranged on the connecting base plate 1, and the diameter of each hole meets the structural requirements of the pull rod 2 and the prestressed steel bundle.
The plane size of the auxiliary backing plate 3 is 970 × 1120mm, the thickness is 25mm, the positions of the tension rods 2 and the prestressed steel bundles are consistent with the connecting backing plate 1, and the size of the opening needs to be comprehensively considered with the structures of the connecting sleeve 5 and the U-shaped groove plate 4.
The connecting bobbin 5 is a variable cross-section cylinder with a length of 400mm, a diameter of 140mm at one end and a diameter of 156mm at the other end.
The U-shaped groove plate 4 is a groove-shaped steel plate with the depth of 250mm and the width of 270mm, and the thickness is 6 mm.
Example 3
The plane size of the connecting backing plate 1 is 1470 × 1100mm, the thickness is 260mm, the pull rod 2 penetrates through the connecting backing plate 1 to be provided with two holes, the two holes are arranged along the structural symmetry line of the connecting backing plate 1, the anchoring end of the prestressed steel beam penetrates through the connecting backing plate 1 to be provided with six circular holes, the six circular holes are symmetrically arranged on the connecting backing plate 1, and the diameter of each hole meets the structural requirements of the pull rod 2 and the prestressed steel beam.
The plane size of the auxiliary backing plate 3 is 1490 × 1120mm, the thickness is 25mm, the positions of the tension rods 2 and the prestressed steel beams are consistent with the connecting backing plate 1, and the size of the openings needs to be comprehensively considered with the structures of the connecting sleeve 5 and the U-shaped groove plate 4.
The connecting bobbin 5 is a variable cross-section cylinder with a length of 400mm, a diameter of 150mm at one end and a diameter of 165mm at the other end.
The U-shaped groove plate 4 is a groove-shaped steel plate with the depth of 250mm and the width of 270mm, and the thickness is 6 mm.
The utility model discloses an anchor multi beam prestressing force structure on single connection backing plate 1 to adopt supplementary backing plate 3 to solve connection backing plate 1 location and U-shaped frid 4 and satisfy 2 construction spaces of pull rod, finally realize the purpose of large-tonnage main push-towing rope strand anchor, be applicable to AS method and erect suspension bridge main push-towing rope strand or single large-tonnage main push-towing rope strand anchor needs, the power flow is smooth and easy, and it is convenient to be under construction.
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 (6)
1. The utility model provides a suspension bridge anchorage main cable strand anchor which characterized in that:
the anchoring device comprises a connecting base plate (1) and an auxiliary base plate (3) on the bottom surface of the connecting base plate;
the longitudinal center line of the connecting base plate (1) is provided with pull rod anchoring end openings (7) which are arranged in a row, and two sides of the connecting base plate are symmetrically provided with prestressed steel beam anchoring end openings (6);
the auxiliary backing plate (3) is provided with a pull rod anchoring end opening hole (7) and a prestressed steel beam anchoring end opening hole (6) which correspond to the connecting backing plate (1), a longitudinal U-shaped groove plate (4) is arranged at the pull rod anchoring end opening hole (7) in the bottom surface of the auxiliary backing plate (3), and a connecting bobbin (5) is arranged at each prestressed steel beam anchoring end opening hole (6) in the bottom surface of the auxiliary backing plate (3).
2. The suspension bridge anchorage main cable strand anchoring device of claim 1, characterized in that:
two tie rod anchoring end openings (7) are longitudinally arranged, and a pair of two, two pairs of four or three pairs of six prestressed steel beam anchoring end openings (6) are symmetrically arranged on two sides.
3. The suspension bridge anchorage main cable strand anchoring device of claim 2, characterized in that:
the auxiliary backing plate (3) is provided with a lower positioning plate (8) and a left positioning plate (9) with the plate thickness of 10mm, the plane size of the lower positioning plate (8) is 20 × 30mm, and the plane size of the left positioning plate (9) is 10 × 30 mm.
4. The suspension bridge anchorage main cable strand anchoring device of claim 3, characterized in that:
the connecting bobbin (5) is a variable cross-section cylinder, the length is 300 mm-500 mm, the diameter of one end is 140mm, and the diameter of the other end is 156 mm.
5. The suspension bridge anchorage main cable strand anchoring device of claim 4, characterized in that:
the U-shaped groove plate (4) is a construction space of the anchoring end of the pull rod, and is 250mm deep, 270mm wide and 6mm thick.
6. The suspension bridge anchorage main cable strand anchoring device of claim 5, characterized in that:
the width of the connecting backing plate (1) is 900 mm-1200 mm, the length is 750-1990 mm, and the thickness is 200 mm-300 mm;
the size of the auxiliary backing plate (3) is 10mm larger than that of one side of the connecting backing plate (1), and the thickness is 25 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921551370.9U CN211057612U (en) | 2019-09-18 | 2019-09-18 | Suspension bridge anchorage main cable strand anchoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921551370.9U CN211057612U (en) | 2019-09-18 | 2019-09-18 | Suspension bridge anchorage main cable strand anchoring device |
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| CN211057612U true CN211057612U (en) | 2020-07-21 |
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| CN201921551370.9U Active CN211057612U (en) | 2019-09-18 | 2019-09-18 | Suspension bridge anchorage main cable strand anchoring device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578296A (en) * | 2019-09-18 | 2019-12-17 | 中交第一公路勘察设计研究院有限公司 | Suspension bridge anchorage main cable strand anchoring device |
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- 2019-09-18 CN CN201921551370.9U patent/CN211057612U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110578296A (en) * | 2019-09-18 | 2019-12-17 | 中交第一公路勘察设计研究院有限公司 | Suspension bridge anchorage main cable strand anchoring device |
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