CN218147799U - Box combination cable tower anchor structure of roll over flute profile steel anchor - Google Patents
Box combination cable tower anchor structure of roll over flute profile steel anchor Download PDFInfo
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- CN218147799U CN218147799U CN202222142906.XU CN202222142906U CN218147799U CN 218147799 U CN218147799 U CN 218147799U CN 202222142906 U CN202222142906 U CN 202222142906U CN 218147799 U CN218147799 U CN 218147799U
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Abstract
The application discloses an anchoring structure of a folded-web groove-shaped steel anchor box type combined cable tower, which relates to the technical field of bridge structures and comprises a plurality of folded-web groove-shaped steel anchor boxes, a concrete tower wall and stay cables, wherein the folded-web groove-shaped steel anchor boxes are connected in an up-and-down stacked mode; the concrete tower wall is arranged around and connected with the outer side of the folded bellyband-shaped steel anchor box; the folded web channel-shaped steel anchor box comprises two folded webs and two channel-shaped steel anchor boxes; two ends of the folded web plate are respectively connected with the two trough-shaped steel anchor boxes to form an annular closed structure in an enclosing manner; the concrete tower wall comprises an end tower wall and a side tower wall, the end tower wall and the groove-shaped steel anchor box are arranged at intervals, and the side tower wall is connected with the groove-shaped steel anchor box; the stay cable penetrates through the end tower wall and is connected with the channel-shaped steel anchor box. This application can reduce the tensile stress of end tower wall concrete, improves the steel utilization ratio, and the construction is convenient, adapts to the suspension cable arrangement of many anchor heads, space cable face.
Description
Technical Field
The utility model belongs to the technical field of bridge structures's technique and specifically relates to a roll over box combination cable tower anchor structure of abdomen flute profile steel anchor.
Background
The cable tower anchoring structure needs to disperse and transmit concentrated force of a stay cable to the full cross section of the cable tower, and is a key structural design part influencing the full-bridge safety of a cable-stayed bridge. In recent years, examples of the large-span cable-stayed bridge adopting a combined cable tower anchoring structure are gradually increased, and a steel anchor beam or a steel anchor box and the like are utilized for bearing horizontal tension of a stay cable and vertical pressure of a concrete tower wall, so that the material performance advantages of steel and concrete are fully exerted, and the cable tower anchoring structure is a reasonable cable tower anchoring form.
The steel anchor beam type combined cable tower anchoring structure is characterized in that a steel anchor beam on a bracket on the inner wall of a cable tower bears the horizontal cable force of a stay cable, and the wall of the concrete tower only bears the vertical cable force and the unbalanced horizontal cable force. The method has the advantages that no circumferential prestress is required to be applied, and the construction is rapid and convenient; the defects that the installation and the positioning need higher precision, the joint part of the steel wall plate and the tower wall bears the bending shear effect, and the concrete has the problem of local tensile stress; for the stay cable anchoring of a cable plane with multiple anchor heads and space, the bracket needs to be widened along the transverse bridge direction, so that the insufficient anchoring space of the tower wall at the end is easily caused.
The steel anchor box type combined cable tower anchoring structure is characterized in that a built-in or exposed steel anchor box bears the horizontal cable force of a stay cable. The anchor block has the advantages of good integrity of the anchor block, clear stress mode and accurate positioning of the anchor point; the disadvantages are that the steel consumption is large, the concrete of the end tower wall of the built-in scheme is easy to crack, the exposed scheme must apply the circumferential prestress, the structure and the stress of the bottom section steel anchor box are complicated, and the steel anchor box web plate interval is narrow, so the requirements of the stay cable anchoring of a multi-anchor head and a space cable plane are difficult to adapt.
Therefore, it is necessary to design a combined cable tower anchoring structure which can reduce the local tensile stress of the concrete of the end tower wall, improve the utilization rate of steel, is convenient to construct and adapts to the spatial arrangement of the stay cables.
SUMMERY OF THE UTILITY MODEL
In order to solve the problems, the application provides a folded web groove-shaped steel anchor box type combined cable tower anchoring structure. The following technical scheme is adopted:
a kind of folding abdomen trough-shaped steel anchor box type combination cable tower anchoring structure, including several sections fold the trough-shaped steel anchor box of the abdomen, concrete tower wall and stay cable that connect up and down; the concrete tower wall is connected to the outer side of the folded bellyband-shaped steel anchor box in a surrounding manner; the folded web channel-shaped steel anchor box comprises two folded webs and two channel-shaped steel anchor boxes; two ends of the folded web plate are respectively connected with the two groove-shaped steel anchor boxes to form an annular closed structure in an enclosing mode; the concrete tower wall comprises an end tower wall and side tower walls, the end tower wall and the groove-shaped steel anchor box are arranged at intervals, and the side tower walls are connected with the groove-shaped steel anchor box; the stay cable penetrates through the end tower wall and is connected with the channel-shaped steel anchor box.
Optionally, the channel-shaped steel anchor box comprises an end plate and two side plates, and two ends of the end plate are respectively connected with the two side plates to form a channel-shaped structure; two ends of the folded web plate are respectively connected with the side plates; the end plates and the end tower wall are arranged at intervals, and the side plates are connected with the side tower wall.
Optionally, the end plate is provided with a through hole for the stay cable to pass through.
Optionally, the channel steel anchor box further comprises an anchor backing plate, a bearing plate, a support plate and a seat plate; the two support plates are arranged in a groove-shaped structure in parallel up and down; the seat plate is connected to one side of the two support plates away from the end plate; the pressure bearing plate is arranged between the two supporting plates, one end of the pressure bearing plate is connected with the end plate, and the other end of the pressure bearing plate is connected with the seat plate; the anchor backing plate is arranged on the seat plate, and the anchor backing plate is provided with an anchor head for connecting the stay cable with the anchor head after penetrating through the seat plate and the anchor backing plate.
Optionally, the support plate is parallel to the stay cable.
Optionally, each groove-shaped steel anchor box is connected with two stay cables in a penetrating manner.
Optionally, a plurality of rows of welding nails are vertically arranged on the side plate, and the side plate is connected with the concrete tower wall through the welding nails; the welding nails are uniformly distributed along the horizontal direction and the vertical direction of the side plate.
Optionally, the end plate is vertically connected with the side plates at two sides.
To sum up, the present application includes the following beneficial effects:
1. reducing the tensile stress of the end tower wall concrete: compared with a steel anchor beam type anchoring structure, the concrete tensile stress of the steel anchor box scheme mainly occurs on the inner side of the end tower wall, and the concrete tensile stress of the steel anchor box scheme mainly occurs on the outer side of the end tower wall; and the folded web groove-shaped steel anchor box is disconnected with the end tower wall, unbalanced horizontal cable force is transmitted to the side tower wall in a shearing force mode, and concrete of the end tower wall is only acted by vertical pressure.
2. The utilization rate of steel is improved: the zigzag web plate can be telescopically deformed along the bridge direction, and the horizontal component force of the stay cable is transmitted to the two groove-shaped steel anchor boxes to form a self-balancing structure, so that the excessive transmission of the horizontal cable force to the wall of the concrete tower is avoided, the proportion of the horizontal component force of the stay cable borne by the steel structure in the anchoring structure is increased, and the utilization rate of steel is improved.
3. Construction is convenient: the side plates and the folded webs of the groove-shaped steel anchor boxes can be used as templates of concrete side tower walls, the difficulty of concrete pouring of the side tower walls is reduced, and the anchor boxes are connected up and down to enable anchoring points to be more accurate, so that the construction efficiency of anchoring areas is improved.
4. Adaptive space anchoring: the anchoring support of the groove-shaped steel anchor box extends to the side tower wall along the transverse bridge direction, increases the anchoring space of the steel anchor head, is suitable for single cable surface, double cable surfaces and multiple cable surfaces, and can also be suitable for the stay cable anchoring of parallel cable surfaces and space cable surfaces.
Drawings
FIG. 1 is a schematic view of the overall structure of the present embodiment;
FIG. 2 is a schematic structural view of a single-segment steel anchor box and a stay cable in this embodiment;
FIG. 3 is an overall plan view of the present embodiment;
FIG. 4 is a top view of the single-segment steel anchor box and the stay cable in this embodiment;
FIG. 5 is a schematic view of the channel steel anchor boxes in this embodiment;
fig. 6 is a schematic view of the anchor backing plate, the support plate, the pressure bearing plate, and the seat plate in the present embodiment.
Description of reference numerals: 1. a concrete tower wall; 101. an end tower wall; 102. a side tower wall; 2. a stay cable; 3. a folded web; 4. a groove-shaped steel anchor box; 5. an end plate; 6. a side plate; 7. an anchor backing plate; 8. a pressure bearing plate; 9. a support plate; 10. a seat plate; 11. an anchor head; 12. welding nails; 13. and a through hole.
Detailed Description
The present application is described in further detail below with reference to figures 1-6.
The embodiment of the application discloses box combination cable tower anchor structure of folding abdomen flute profile steel anchor, refers to figure 1, and including folding abdomen flute profile steel anchor case, concrete tower wall 1 and suspension cable 2 that a plurality of segments are stacked and are connected from top to bottom. Concrete tower wall 1 encloses to establish and connects in the bellowed channel-shaped steel anchor case outside. The folded web channel-shaped steel anchor box comprises two folded web plates 3 and two channel-shaped steel anchor boxes 4. The two ends of the folded web plate 3 are respectively connected with the two groove-shaped steel anchor boxes 4 to form an annular closed structure in an enclosing mode. The concrete tower wall 1 comprises an end tower wall 101 and a side tower wall 102, the end tower wall 101 and the channel steel anchor boxes 4 are arranged at intervals, and the side tower wall 102 is connected with the channel steel anchor boxes 4. The stay cable 2 is arranged through the end tower wall 101 and is connected with the channel-shaped steel anchor box 4.
Referring to fig. 2 and 3, two stay cables 2 are connected to each channel steel anchor box 4 in a penetrating manner. The channel-shaped steel anchor box 4 comprises an end plate 5 and two side plates 6, and two ends of the end plate 5 are respectively welded and fixed with the two side plates 6 to form a channel-shaped structure. The end plate 5 and the two side plates 6 are welded perpendicularly to each other. Two ends of the folded web 3 are respectively welded with the side plates 6. The end plate 5 is provided with a through hole 13 for the stay cable 2 to pass through.
Referring to fig. 4, a plurality of rows of welding nails 12 are vertically welded on the side plate 6, and after the concrete tower wall 1 is poured, the side plate 6 is connected with the welding nails 12. Wherein, the side wall of the concrete tower wall 1 connected with the side plate 6 is a side tower wall 102, and the tower wall close to the end plate 5 is an end tower wall 101; the end plates 5 are arranged at intervals with the end tower wall 101 so as to reduce the tensile stress on the concrete of the end tower wall 101; the side plates 6 are connected with the side tower wall 102 through welding nails 12.
Referring to fig. 5 and 6, the channel steel anchor box 4 further includes an anchor backing plate 7, a pressure bearing plate 8, a support plate 9, and a seat plate 10. The support plates 9 are parallel to the stay cables 2, and the two support plates 9 are arranged in parallel up and down along the groove-shaped structure. The seat plate 10 is attached to the side of the two support plates 9 remote from the end plate 5. The bearing plate 8 is provided with a plurality of and along end plate length direction interval distribution between two backup pads 9, and the one end and the end plate 5 of bearing plate 8 are connected, and the other end is connected with bedplate 10. The anchor backing plate 7 is arranged on the seat plate 10, and the anchor backing plate 7 is connected with the anchor head 11 in a supporting mode and used for enabling the stay cable 2 to penetrate through the end plate 5, the seat plate 10 and the anchor backing plate 7 and then to be fixedly connected with the anchor head 11 in an inserting mode.
In this embodiment, a construction method of an anchoring structure of a folded web groove-shaped steel anchor box type combined cable tower includes:
(1) And (4) processing and manufacturing the channel steel anchor box 4. The anchor backing plate 7, the seat plate 10 and the support plate 9 are welded together. A plurality of bearing plates 8 are welded in a supporting plate 9, and a semi-closed box-shaped structure is formed by welding an end plate 5, a side plate 6 and the supporting plate 9 to form a groove-shaped steel anchor box 4. Wherein, the end plate 5 is provided with a through hole 13, and the side plate 6 is welded with a plurality of rows of welding nails 12. The two groove-shaped steel anchor boxes 4 are connected through the folded web 3, and the folded web 3 is welded with the side plates 6 of the two groove-shaped steel anchor boxes 4.
(2) And (5) mounting and splicing the folded bellowed channel-shaped steel anchor box. The two channel-shaped steel anchor boxes 4 are connected into a single-section folded web channel-shaped steel anchor box through the folded web 3. The sections are hoisted one by one and stacked up and down, and the end plate 5 and the side plate 6 of the channel-shaped steel anchor box 4 are connected with each other by on-site welding or bolts to form a whole.
(3) And (4) pouring the concrete tower wall 1. And (3) casting concrete by sections from bottom to top by utilizing the template to form the concrete tower wall 1. Wherein the concrete is poured outside the channel-shaped steel anchor boxes 4, the end plates 5 do not contact with the concrete tower wall 1, and contact with the concrete tower wall 1 through the side plates 6.
(4) And the stay cable 2 is tensioned and anchored. The stay cable 2 is fixed on the anchor head 11 through the through hole 13 on the end plate 5, and the anchor head 11 is supported on the anchor backing plate 7 to form an anchoring device. The horizontal component force of the stay cable 2 is born by a side plate 6 of the channel-shaped steel anchor box 4, and the vertical component force is transmitted to the side plate 6 through a support plate 9 and then transmitted to the concrete tower wall 1 through a welding nail 12.
The anchoring structure of the folded-web groove-shaped steel anchor box type combined cable tower can reduce the tensile stress of concrete on the end tower wall 101, the two groove-shaped steel anchor boxes 4 form a self-balancing structure to bear the horizontal component force of the stay cable 2, so that the steel utilization rate is improved, the construction is convenient, the pouring difficulty of the concrete tower wall 1 is reduced, and the spatial arrangement of the stay cable 2 is adapted.
The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: equivalent changes in structure, shape and principle of the present application shall be covered by the protection scope of the present application.
Claims (8)
1. The utility model provides a roll over box combination cable tower anchor structure of abdomen flute profile steel anchor which characterized in that: the tower comprises a plurality of sections of folded web groove-shaped steel anchor boxes, a concrete tower wall and stay cables which are connected in an up-and-down stacked manner; the concrete tower wall is connected to the outer side of the folded bellyband-shaped steel anchor box in a surrounding manner; the folded web channel-shaped steel anchor box comprises two folded webs and two channel-shaped steel anchor boxes; two ends of the folded web plate are respectively connected with the two groove-shaped steel anchor boxes to form an annular closed structure in an enclosing mode; the concrete tower wall comprises an end tower wall and side tower walls, the end tower wall and the groove-shaped steel anchor box are arranged at intervals, and the side tower walls are connected with the groove-shaped steel anchor box; the stay cable penetrates through the end tower wall and is connected with the channel-shaped steel anchor box.
2. The anchoring structure of the folded web groove-shaped steel anchor box type combined cable tower as claimed in claim 1, wherein: the groove-shaped steel anchor box comprises an end plate and two side plates, wherein two ends of the end plate are respectively connected with the two side plates to form a groove-shaped structure; two ends of the folded web are respectively connected with the side plates; the end plates and the end tower wall are arranged at intervals, and the side plates are connected with the side tower wall.
3. The anchoring structure of the folded web groove-shaped steel anchor box type combined cable tower as claimed in claim 2, wherein: the end plate is provided with a through hole for the stay cable to pass through.
4. The anchoring structure of the folded-web groove-shaped steel anchor box type combined cable tower as claimed in claim 2, wherein: the channel steel anchor box also comprises an anchor backing plate, a bearing plate, a supporting plate and a seat plate; the two support plates are arranged in a groove-shaped structure in parallel up and down; the seat plate is connected to one side of the two support plates away from the end plate; the pressure bearing plate is arranged between the two support plates, one end of the pressure bearing plate is connected with the end plate, and the other end of the pressure bearing plate is connected with the seat plate; the anchor backing plate is arranged on the seat plate, and the anchor backing plate is provided with an anchor head for connecting the stay cable with the anchor head after penetrating through the seat plate and the anchor backing plate.
5. The anchoring structure of the folded-web groove-shaped steel anchor box type combined cable tower as claimed in claim 4, wherein: the supporting plate is parallel to the stay cable.
6. The anchoring structure of the folded web groove-shaped steel anchor box type combined cable tower as claimed in claim 1, wherein: and each trough-shaped steel anchor box is connected with two stay cables in a penetrating way.
7. The anchoring structure of the folded-web groove-shaped steel anchor box type combined cable tower as claimed in claim 2, wherein: a plurality of rows of welding nails are vertically arranged on the side plate, and the side plate is connected with the concrete tower wall through the welding nails; the welding nails are uniformly distributed along the horizontal direction and the vertical direction of the side plate.
8. The anchoring structure of the folded-web groove-shaped steel anchor box type combined cable tower as claimed in claim 2, wherein: the end plates are vertically connected with the side plates at the two sides.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222142906.XU CN218147799U (en) | 2022-08-15 | 2022-08-15 | Box combination cable tower anchor structure of roll over flute profile steel anchor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222142906.XU CN218147799U (en) | 2022-08-15 | 2022-08-15 | Box combination cable tower anchor structure of roll over flute profile steel anchor |
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| Publication Number | Publication Date |
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| CN218147799U true CN218147799U (en) | 2022-12-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222142906.XU Active CN218147799U (en) | 2022-08-15 | 2022-08-15 | Box combination cable tower anchor structure of roll over flute profile steel anchor |
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| CN (1) | CN218147799U (en) |
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2022
- 2022-08-15 CN CN202222142906.XU patent/CN218147799U/en active Active
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