CN210134326U - Steel wall box type steel anchor beam combined cable tower anchoring structure - Google Patents
Steel wall box type steel anchor beam combined cable tower anchoring structure Download PDFInfo
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- CN210134326U CN210134326U CN201920225147.9U CN201920225147U CN210134326U CN 210134326 U CN210134326 U CN 210134326U CN 201920225147 U CN201920225147 U CN 201920225147U CN 210134326 U CN210134326 U CN 210134326U
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Abstract
The utility model discloses a steel wall box-type steel anchor beam combination cable tower anchoring structure, including steel wall box-type steel anchor beam, concrete tower wall and suspension cable. The steel wall box type steel anchor beam comprises a steel cross beam and two steel wall boxes, wherein the beam end is fixed on the steel wall boxes, and an anchoring device is arranged at the beam end; the inner wall plate and the outer wall plate of the steel wall box are both provided with inhaul cable through holes; the side wall plate is provided with an opening, the steel wall box is also provided with a penetrating steel bar arranged in the opening of the side wall plate, and the part of the penetrating steel bar extending out of the side wall plate forms a connecting piece of the opening plate. Concrete is poured on the periphery of the steel wall box type steel anchor beam to form a concrete tower wall, and the steel wall box type steel anchor beam and the peripheral concrete tower wall are connected together through the perforated plate connecting piece. The stay cable passes through the stay cable through hole and is anchored on the anchoring device. It has the following advantages: the horizontal component of the stay cable is mostly borne by the steel cross beam, and the vertical component is transmitted to the steel wall box through the steel support and then transmitted to the concrete tower wall through the perforated plate connecting piece.
Description
Technical Field
The utility model belongs to the technical field of bridge structures, concretely relates to steel wall box-like steel anchor beam combination cable tower anchor structure.
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. The traditional design is mainly that the hoop prestressed tendons are arranged in the anchoring area to bear the horizontal cable force of the stay cable, and the defects of the traditional design are as follows: the system works high above the ground, and the difficulty of later maintenance is increased. In recent years, the examples of the combined cable tower anchoring structure adopted by the large-span cable-stayed bridge are gradually increased, and the steel anchor box, the steel anchor plate or the steel anchor beam and the like are utilized to bear horizontal tension of a stay cable, and the concrete tower wall is utilized to bear vertical pressure, so that the material performance advantages of steel and concrete can be fully exerted, and the cable tower anchoring structure is a more reasonable cable tower anchoring form.
The steel anchor box combined cable tower anchoring structure is characterized in that a built-in or exposed steel anchor box bears the horizontal tension of a stay cable. The anchor box has the advantages that the integrity of the anchoring area is good, the stress mode is clear, and the anchor box is accurately positioned; the defects are that the steel consumption is large, concrete at the end tower wall of the built-in scheme is easy to crack, the annular prestress needs to be applied in the exposed scheme, and the structure and stress of the steel anchor box at the bottom section are complex.
The steel anchor plate combined cable tower anchoring structure transmits the diagonal cable force to the concrete tower column through the steel anchor plate wrapped inside the concrete tower column. The steel anchor plate has the advantages that the steel anchor plate bears a larger cable force proportion, the utilization rate of steel materials is high, and the force transmission mechanism is more definite; the cable-stayed bridge has the defects that the cable-stayed bridge is not suitable for the common situations of a space cable surface, asymmetric load, a hollow cable tower section and the like of a cable-stayed bridge with an ultra-large span.
The steel anchor beam on the bracket on the inner wall of the cable tower bears the balance horizontal cable force, and the concrete tower wall only bears the vertical cable force and the unbalanced horizontal cable force. The method has the advantages that no hoop prestress is required to be applied, and the steel consumption is small; the defects are 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.
SUMMERY OF THE UTILITY MODEL
The utility model provides a steel wall box-type steel anchor beam combination cable tower anchor structure, it has overcome among the background art not enough that cable tower anchor structure exists.
The utility model provides an adopted technical scheme of its technical problem is:
a steel wall box type steel anchor beam combined cable tower anchoring structure comprises:
the steel wall box type steel anchor beam comprises a steel cross beam (4) and two steel wall boxes (5); two beam ends of the steel beam (4) are respectively fixed on two steel wall boxes (5), and the beam end of the steel beam (4) is provided with an anchoring device (3); the steel wall box (5) comprises an inner wall plate (8), an outer wall plate (9) and two side wall plates (10), wherein the inner wall plate (8), the outer wall plate (9) and the side wall plates (10) are fixed together and enclose a structure shaped like a Chinese character 'kou'; the inner wall plate (8) and the outer wall plate (9) are both provided with inhaul cable through holes (13); the side wall plate (10) is provided with a first through hole, the steel wall box (5) is also provided with a through reinforcing steel bar (12) arranged in the first through hole of the side wall plate (10), and the part of the through reinforcing steel bar (12) extending out of the side wall plate (10) forms a through hole plate connecting piece (6);
the concrete tower wall (1) is formed by pouring concrete on the periphery of a steel wall box type steel anchor beam, and the steel wall box type steel anchor beam is connected with the peripheral concrete tower wall (1) through a perforated plate connecting piece (6); and
a stay cable (2) which passes through the cable through hole (13) of the outer wall plate (9) and the cable through hole (13) of the inner wall plate (8) and is anchored to the anchor device (3).
In one embodiment: the steel wall box (5) further comprises a steel support (7) fixed outside the inner wall plate (8), the steel support (7) comprises a seat plate (14) vertically and fixedly arranged on the inner wall plate (8) and a plurality of supporting plates (15) fixedly connected with the inner wall plate (8) and the seat plate (14), and the beam end of the steel beam (4) is supported on the seat plate (14).
In one embodiment: the steel support (7) also comprises a support rib plate (16) fixedly arranged on the support plate (15).
In one embodiment: a wall plate rib (11) is fixedly arranged in the steel wall box (5), a second opening is formed in the wall plate rib (11), the first opening is aligned with the second opening, and the penetrating steel bar (12) is arranged in the first opening of the side wall plate (10) and the second opening of the wall plate rib (11).
In one embodiment: the plurality of wall ribs (11) are arranged, and the plurality of wall ribs (11) are parallel to the side wall plates (10) at intervals.
In one embodiment: the beam end of the steel beam (4) is provided with two anchoring devices (3), and the two anchoring devices (3) are symmetrically positioned at two sides of the steel beam (4).
In one embodiment: the steel wall box type steel anchor beam is provided with a plurality of sections which are stacked up and down.
Compared with the background technology, the technical scheme has the following advantages:
the most part of horizontal component of suspension cable is undertaken by the steel crossbeam, and vertical component transmits to the steel wall case through the steel support, and rethread trompil board connecting piece transmits to the concrete tower wall, consequently can improve steel utilization ratio, reduce concrete tensile stress, improve the stress situation of steel-concrete junction, economic safety and construct convenient combination cable tower anchor structure.
Drawings
The present invention will be further described with reference to the accompanying drawings and the following detailed description.
Fig. 1 is a schematic structural diagram of a steel wall box type steel anchor beam combined cable tower anchoring structure.
Fig. 2 is a schematic steel structure diagram of a steel wall box type steel anchor beam combined cable tower anchoring structure.
Fig. 3 is a schematic structural view of a steel wall box of the steel anchor beam combined cable tower anchoring structure.
Reference numerals:
concrete tower wall 1, suspension cable 2, anchor 3, steel crossbeam 4, steel wall box 5, trompil board connecting piece 6, steel support 7, interior wallboard 8, exterior wallboard 9, side wall board 10, wallboard floor 11, run-through reinforcing bar 12, cable through-hole 13, bedplate 14, backup pad 15, support floor 16.
Detailed Description
A steel wall box type steel anchor beam combined cable tower anchoring structure comprises a plurality of sections of steel wall box type steel anchor beams stacked up and down, a peripheral concrete tower wall 1 and a plurality of stay cables 2, wherein the steel wall box type steel anchor beams are arranged in a vertical direction; the steel wall box type steel anchor beam is connected with the peripheral concrete tower wall 1 through the perforated plate connecting piece 6.
As shown in fig. 2, the steel wall box type steel anchor beam comprises a steel beam 4, two steel wall boxes 5 and a plurality of anchoring devices 3. Wherein: the steel beam 4 is provided with a corresponding number of anchoring devices 3 at two beam ends according to the requirements of anchoring stay cables 2; two beam ends of the steel beam 4 are respectively and fixedly arranged on the two steel wall boxes 5.
As shown in fig. 2 and 3, the steel wall box 5 includes an inner wall plate 8, an outer wall plate 9 and two side wall plates 10; the inner wall plate 8, the outer wall plate 9 and the side wall plate 10 are fixed together and form a square structure; the steel wall box 5 further comprises a steel support 7, the steel support 7 comprises a seat plate 14 vertically and fixedly arranged on the inner side surface of the inner wall plate 8, a plurality of support plates 15 and support rib plates 16, the support plates 15 are fixedly connected with the inner wall plate 8 and the seat plate 14, and the support rib plates 16 are fixedly arranged on the support plates 15. The beam end of the steel beam 4 is supported on the seat plate 14. The inner wall plate 8 and the outer wall plate 9 are both provided with a plurality of stay cable through holes 13 for the stay cables 2 to pass through. A plurality of wall plate rib plates 11 provided with second openings are welded in the steel wall box 5, a plurality of first openings are arranged on the two side wall plates 10, the first openings are aligned with the second openings, and the steel wall box 5 is provided with penetrating steel bars 12 arranged in the first openings and the second openings; the installed through-reinforcement 12 is formed with an apertured plate connection 6.
In this embodiment, a construction method for a steel wall box type steel anchor beam combined cable tower anchoring structure includes:
(1) and (5) processing and manufacturing a steel structure. A steel beam 4 and a plurality of anchoring devices 3 are welded into a whole. A steel support 7 is formed by welding a seat plate 14, a plurality of support plates 15 and support rib plates 16. A closed box-shaped structure is formed by welding an inner wall plate 8, an outer wall plate 9 and two side wall plates 10, and a steel support 7 is welded on the inner wall plate 8 to form a steel wall box 5. Wherein, the inner wall plate 8 and the outer wall plate 9 are provided with inhaul cable through holes 13; and a plurality of wall plate rib plates 11 provided with second openings are welded, and the side wall plate 10 is directly provided with first openings.
(2) And (5) mounting and splicing steel structures. A steel beam 4 is placed on two steel supports 7 and temporarily connected with two steel wall boxes 5 by bolts to form a single-segment steel wall box type steel anchor beam. The sections are hoisted one by one and stacked up and down for positioning, and an inner wall plate 8, an outer wall plate 9 and a side wall plate 10 of the steel wall box 5 are connected with the upper section and the lower section through bolts or welded on site to form a whole.
(3) And (5) pouring the concrete tower wall. The method comprises the steps of binding through steel bars 12 in first holes of side wall plates 10 and second holes of wall plate rib plates 11 by using an inner wall plate 8, an outer wall plate 9 and two side wall plates 10 of a steel wall box 5 as templates to form a hole plate connecting piece 6, and then pouring concrete in sections from bottom to top to form the concrete tower wall 1. Wherein: concrete is cast both outside the steel wall boxes 5 and inside the steel wall boxes 5, and concrete is cast inside all the steel wall boxes, the concrete surrounding the outside of the steel wall boxes constituting the tower wall surrounding the steel wall boxes.
(4) And (5) tensioning and anchoring the stay cable. The stay cable 2 passes through the stay cable through holes 13 on the inner wall plate 8 and the outer wall plate 9 and is anchored on the anchoring devices 3 at two ends of the steel cross beam 4, the horizontal component force of the stay cable 2 is mostly born by the steel cross beam 4, the vertical component force is transmitted to the steel wall box 5 through the steel support 7 and then transmitted to the concrete tower wall 1 through the perforated plate connecting piece 6.
The steel wall box type steel anchor beam combined cable tower anchoring structure can give full play to the advantages of the respective material properties of steel and concrete, enhance the stress property of a steel-concrete combination part, and is economical, safe and convenient to construct. In particular it has the following advantages: 1. the utilization rate of steel is improved. The steel wall box and the concrete tower wall are combined into a whole, the steel anchor beam is supported on a steel support of a front wall plate of the steel wall box, free deformation can be generated along the longitudinal bridge direction under the action of the stay cable force, only the balance part of the horizontal cable force is born, and the utilization rate of steel can be greatly improved compared with the scheme of the steel anchor box. 2. Reducing the tensile stress of the concrete. The concrete tensile stress of the steel anchor box scheme mainly occurs outside the end tower wall, the concrete tensile stress of the steel anchor beam scheme mainly occurs inside the end tower wall, and the closed box-shaped structure of the steel wall box plays a role in restraining and wrapping concrete on the end tower wall, so that the local tensile stress of the concrete can be reduced. 3. And the stress condition of the steel-concrete joint is improved. The stiffening rib of preceding wallboard, the back wallboard of steel wall case sets up the trompil, directly sets up the trompil on two lateral wall boards, and downthehole reinforcing bar that can run through forms the trompil board connecting piece of more quantity in the narrow and small space in anchor district, helps improving the intensity and the rigidity of steel-concrete joint portion. Meanwhile, the steel wall box can prevent the shearing-resistant bearing capacity of the connecting piece from being weakened by the drawing force under the constraint action on the concrete, so that the stress condition of the steel-concrete joint part is improved. 4. Economic and safe and convenient construction. Compared with a steel anchor box scheme, the steel consumption of the steel wall box scheme is smaller, and the economical efficiency is better. Compared with the scheme of a steel anchor beam and a steel anchor plate, the anchoring area of the scheme of the steel wall box has higher bearing capacity and is more suitable for the cable-stayed bridge with the ultra-large span. The closed box structure of the steel wall box is convenient to position and assemble when being stacked, and can be used as a template for pouring the concrete tower wall, so that the construction efficiency of an anchoring area is improved.
The above description is only a preferred embodiment of the present invention, and therefore the scope of the present invention should not be limited by this description, and all equivalent changes and modifications made within the scope and the specification of the present invention should be covered by the present invention.
Claims (7)
1. The utility model provides a steel wall box-type steel anchor beam combination cable tower anchor structure which characterized in that: the method comprises the following steps:
the steel wall box type steel anchor beam comprises a steel cross beam (4) and two steel wall boxes (5); two beam ends of the steel beam (4) are respectively fixed on two steel wall boxes (5), and the beam end of the steel beam (4) is provided with an anchoring device (3); the steel wall box (5) comprises an inner wall plate (8), an outer wall plate (9) and two side wall plates (10), wherein the inner wall plate (8), the outer wall plate (9) and the side wall plates (10) are fixed together and enclose a structure shaped like a Chinese character 'kou'; the inner wall plate (8) and the outer wall plate (9) are both provided with inhaul cable through holes (13); the side wall plate (10) is provided with a first through hole, the steel wall box (5) is also provided with a through reinforcing steel bar (12) arranged in the first through hole of the side wall plate (10), and the part of the through reinforcing steel bar (12) extending out of the side wall plate (10) forms a through hole plate connecting piece (6);
the concrete tower wall (1) is formed by pouring concrete on the periphery of a steel wall box type steel anchor beam, and the steel wall box type steel anchor beam is connected with the peripheral concrete tower wall (1) through a perforated plate connecting piece (6); and
a stay cable (2) which passes through the cable through hole (13) of the outer wall plate (9) and the cable through hole (13) of the inner wall plate (8) and is anchored to the anchor device (3).
2. The steel wall box type steel anchor beam combined cable tower anchoring structure as claimed in claim 1, wherein: the steel wall box (5) further comprises a steel support (7) fixed outside the inner wall plate (8), the steel support (7) comprises a seat plate (14) vertically and fixedly arranged on the inner wall plate (8) and a plurality of supporting plates (15) fixedly connected with the inner wall plate (8) and the seat plate (14), and the beam end of the steel beam (4) is supported on the seat plate (14).
3. The steel wall box type steel anchor beam combined cable tower anchoring structure as claimed in claim 2, wherein: the steel support (7) also comprises a support rib plate (16) fixedly arranged on the support plate (15).
4. The steel wall box type steel anchor beam combined cable tower anchoring structure as claimed in claim 1, wherein: a wall plate rib (11) is fixedly arranged in the steel wall box (5), a second opening is formed in the wall plate rib (11), the first opening is aligned with the second opening, and the penetrating steel bar (12) is arranged in the first opening of the side wall plate (10) and the second opening of the wall plate rib (11).
5. The steel wall box type steel anchor beam combined cable tower anchoring structure according to claim 4, wherein: the plurality of wall ribs (11) are arranged, and the plurality of wall ribs (11) are parallel to the side wall plates (10) at intervals.
6. The steel wall box type steel anchor beam combined cable tower anchoring structure as claimed in claim 1, wherein: the beam end of the steel beam (4) is provided with two anchoring devices (3), and the two anchoring devices (3) are symmetrically positioned at two sides of the steel beam (4).
7. The steel wall box type steel anchor beam combined cable tower anchoring structure as claimed in claim 1, wherein: the steel wall box type steel anchor beam is provided with a plurality of sections which are stacked up and down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920225147.9U CN210134326U (en) | 2019-02-22 | 2019-02-22 | Steel wall box type steel anchor beam combined cable tower anchoring structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920225147.9U CN210134326U (en) | 2019-02-22 | 2019-02-22 | Steel wall box type steel anchor beam combined cable tower anchoring structure |
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| CN210134326U true CN210134326U (en) | 2020-03-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920225147.9U Expired - Fee Related CN210134326U (en) | 2019-02-22 | 2019-02-22 | Steel wall box type steel anchor beam combined cable tower anchoring structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736183A (en) * | 2019-02-22 | 2019-05-10 | 华侨大学 | The box steel anchor beam combination bridge tower anchoring structure of steel wall and its construction method |
| CN116516794A (en) * | 2023-04-28 | 2023-08-01 | 中交公路规划设计院有限公司 | Prestress steel beam connecting device for cable tower and steel beam and construction method |
-
2019
- 2019-02-22 CN CN201920225147.9U patent/CN210134326U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109736183A (en) * | 2019-02-22 | 2019-05-10 | 华侨大学 | The box steel anchor beam combination bridge tower anchoring structure of steel wall and its construction method |
| CN116516794A (en) * | 2023-04-28 | 2023-08-01 | 中交公路规划设计院有限公司 | Prestress steel beam connecting device for cable tower and steel beam and construction method |
| CN116516794B (en) * | 2023-04-28 | 2023-11-28 | 中交公路规划设计院有限公司 | Prestress steel beam connecting device for cable tower and steel beam and construction method |
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Granted publication date: 20200310 |
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