Suspension bridge main cable splay section protection structure

Abstract

The invention provides a suspension bridge main cable splay section protection structure, and relates to the technical field of building structure protection, the suspension bridge main cable splay section protection structure comprises a concrete anchor and a protective cover, the protective cover is fixedly arranged on the concrete anchor, the interior of the protective cover is hollow, and a containing cavity is formed in the protective cover; the outer wall of the protective cover is provided with a reserved hole communicated with the containing cavity, the suspension bridge main cable penetrates through the reserved hole and extends into the containing cavity, the suspension bridge main cable is dispersed into a plurality of unit cable strands in the containing cavity, and the unit cable strands penetrate through the protective cover and are fixedly connected with the concrete anchorage. According to the suspension bridge main cable splay section protection structure, the main cable splay section can be effectively protected against corrosion.

Description

Technical Field

[0001] The invention relates to the technical field of building structure protection, and in particular to a main cable fan-out section protection structure for a suspension bridge. Background Art

[0002] A single main cable of a suspension bridge is composed of dozens or hundreds of unit cables, and a single unit cable is composed of dozens or hundreds of high-strength steel wires. When erecting the main cable of a suspension bridge, the main cable of the suspension bridge is dispersed into multiple unit cables through a loose cable sleeve, and then the unit cables are anchored to the front anchor plate using an anchor connector. After the erection is completed, the unit cables, anchor connectors and loose cable sleeves of the loose cable section are exposed to the air and are easily corroded by rain and corrosive gases, affecting the force performance and service life of the main cable.

[0003] In the prior art, generally, the outer surface of the main cable and the outer surface of the unit cable strands are subjected to anti-corrosion treatment, but insufficient consideration is given to the anti-corrosion of the anchor connector and the loose cable sleeve. In particular, the internal structure of the anchor connector and the loose cable sleeve is almost never subjected to anti-corrosion treatment, which results in the anchor connector and the loose cable sleeve often being corroded and damaged from the inside.

[0004] In view of this, the inventor has designed a protective structure for the main cable of a suspension bridge after repeated experiments based on many years of production design experience in this field and related fields, in order to solve the problems existing in the prior art. Summary of the invention

[0005] The object of the present invention is to provide a protective structure for a main cable fan section of a suspension bridge, which can protect the main cable fan section of the suspension bridge from corrosion.

[0006] In order to achieve the above-mentioned purpose, the present invention proposes a suspension bridge main cable cable segment protection structure, wherein the suspension bridge main cable cable segment protection structure includes a concrete anchor and a protective cover, the protective cover is fixedly arranged on the concrete anchor, the interior of the protective cover is hollow and forms a receiving cavity, the outer wall of the protective cover is provided with a reserved hole connected to the receiving cavity, the suspension bridge main cable passes through the reserved hole and extends into the receiving cavity, the suspension bridge main cable is dispersed into a plurality of unit cable strands in the receiving cavity, each of the unit cable strands passes through the protective cover and is fixedly connected to the concrete anchor.

[0007] Compared with the prior art, the present invention has the following characteristics and advantages:

[0008] The main cable loose cable section protection structure of the suspension bridge proposed by the present invention is provided with a closed protective cover on the concrete anchor, and the main cable of the suspension bridge is dispersed into a plurality of unit cable strands in the protective cover, and each unit cable strand is isolated from the external environment by the protective cover, so that each unit cable strand and its auxiliary accessories are effectively prevented from being corroded by rainwater and corrosive gases, thereby enhancing the anti-corrosion effect, extending the service life of the main cable of the suspension bridge and the suspension bridge, and ensuring the safety of the structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The accompanying drawings described herein are only for explanation purposes and are not intended to limit the scope of the present invention in any way. In addition, the shapes and proportional dimensions of the various components in the figures are only schematic, used to help understand the present invention, and are not specifically limited to the shapes and proportional dimensions of the various components of the present invention. Those skilled in the art can select various possible shapes and proportional dimensions to implement the present invention according to the teachings of the present invention.

[0010] Figure 1 It is an elevation view of the protection structure of the main cable section of the suspension bridge proposed by the present invention;

[0011] Figure 2 This is a schematic diagram of the installation of the unit cable strand in the protective cover of the present invention;

[0012] Figure 3 is a plan view of the protective cover of the present invention;

[0013] Figure 4 for Figure 1 AA section view of the middle protective cover;

[0014] Figure 5 It is a schematic structural diagram of the anchor bolt assembly in the present invention.

[0015] Description of Reference Numerals

[0016] 10. Concrete anchorage;

[0017] 20. Protective cover; 21. Bottom plate;

[0018] 22. Top plate; 23. Front side plate;

[0019] 24. Rear side panel; 25. Left side panel;

[0020] 26. Right side panel; 27. Auxiliary panel;

[0021] 40. Drain hole; 50. Maintenance manhole;

[0022] 60. Anchor bolt assembly; 61. Anchor bolt;

[0023] 62. Nut; 63. Washer;

[0024] 1. Unit cable strand; 2. Loose cable sleeve;

[0025] 3. Anchor the connector. DETAILED DESCRIPTION

[0026] The details of the present invention can be more clearly understood with reference to the accompanying drawings and the description of the specific embodiments of the present invention. However, the specific embodiments of the present invention described herein are only used for the purpose of explaining the present invention and cannot be understood as limiting the present invention in any way. Under the guidance of the present invention, technicians can conceive of any possible variations based on the present invention, which should all be considered to belong to the scope of the present invention.

[0027] like Figures 1 to 4 As shown, the present invention proposes a suspension bridge main cable cable segment protection structure, which includes a concrete anchor 10 and a protective cover 20. The protective cover 20 is fixedly arranged on the concrete anchor 10. The interior of the protective cover 20 is hollow and forms a receiving cavity. The outer wall of the protective cover 20 is provided with a reserved hole connected to the receiving cavity. The main cable of the suspension bridge (not shown in the figure) passes through the reserved hole and extends into the receiving cavity. The main cable of the suspension bridge is dispersed into a plurality of unit cables 1 in the receiving cavity. Each unit cable 1 passes through the protective cover 20 and is fixedly connected to the concrete anchor 10.

[0028] The protective structure of the main cable loose cable section of the suspension bridge proposed by the present invention is provided with a closed protective cover 20 on the concrete anchor 10, and the main cable of the suspension bridge is dispersed into a plurality of unit cable strands 1 in the protective cover 20. The protective cover 20 isolates each unit cable strand from the external environment, effectively preventing each unit cable strand 1 (i.e., the loose cable section of the suspension bridge) from being corroded by rainwater and corrosive gases, thereby enhancing the anti-corrosion effect, extending the service life of the main cable of the suspension bridge and the suspension bridge, and ensuring the safety of the structure.

[0029] In an optional embodiment of the present invention, the main cable of the suspension bridge is dispersed into a plurality of unit cable strands 1 through the loose cable sleeve 2, and the protective cover 20 also plays a protective role on the loose cable sleeve 2.

[0030] In an optional embodiment of the present invention, each unit cable strand 1 is fixedly connected to the concrete anchor 10 via an anchor connector 3 , and the anchor connector 3 is also disposed in a protective cover 20 , which effectively prevents corrosion caused by water accumulation at the port of the anchor connector 3 .

[0031] In an optional embodiment of the present invention, each unit cable strand 1 is wrapped with an anti-corrosion material to further enhance the anti-corrosion effect of the main cable fan cable section.

[0032] In an optional embodiment of the present invention, the inner diameter of the reserved hole is larger than the outer diameter of the main cable of the suspension bridge, and a sealing paste is filled between the outer wall of the main cable of the suspension bridge and the inner wall of the reserved hole. The sealing paste seals the space between the main cable of the suspension bridge and the inner wall of the reserved hole, which not only effectively prevents rainwater from entering the inner wall of the protective cover 20 through the reserved hole, but also effectively prevents friction between the main cable of the suspension bridge and the protective cover 20, thereby preventing wear of the main cable of the suspension bridge.

[0033] In an optional embodiment of the present invention, a drainage hole 40 communicating with the accommodating cavity is provided on the outer wall of the protective cover 20. The drainage hole 40 is used to drain the accumulated water inside each protective cover 20, to prevent rainwater entering the protective cover 20 due to external factors such as on-site construction from accumulating inside the protective cover 20, and to avoid rust and corrosion of the unit cable strands 1, the loose cable sleeves 2 and the anchor connector 3 due to the accumulated water.

[0034] In an optional example of this embodiment, the drain hole 40 is opened at the lowest position of the protective cover 20 to facilitate the outflow of accumulated water and avoid the accumulation of water in the protective cover 20.

[0035] In an optional example of this embodiment, the drain hole 40 is set with a small inner diameter and can be kept open all the time to facilitate the discharge of accumulated water.

[0036] In an optional example, the inner diameter of the drainage hole ranges from 5 cm to 10 cm.

[0037] In an optional embodiment of the present invention, a maintenance manhole 50 communicating with the accommodating chamber is provided on the outer wall of the protective cover 20 to facilitate maintenance personnel to inspect the main cable spreading section.

[0038] In an optional example of this embodiment, a blocking plate is detachably installed at the inspection manhole 50 to reduce the possibility of external rainwater entering the protective cover 20.

[0039] In an optional embodiment of the present invention, the protective cover 20 includes a bottom plate 21, a top plate 22 and a plurality of side plates, the bottom plate 21, the top plate 22 and the plurality of side plates are enclosed in a box-like structure, the bottom plate 21 is pre-buried in the concrete anchor 10, and a reserved hole is opened on the top plate 22. With the above structure, the main cable cable segment (that is, each unit cable strand 1 and its cable sleeve 2, anchor connector 3) is enclosed in the protective cover 20 of the box-like structure, and the protective cover 20 protects the interior thereof from being corroded by rainwater and corrosive gases.

[0040] In an optional example of this embodiment, a plate surface of the bottom plate 21 is exposed from the concrete anchor 10, a plurality of side plates are fixedly connected to the plate surface, and the top plate 22 is fixedly connected to the plurality of side plates.

[0041] Furthermore, the bottom plate 21, the top plate 22 and the side plates are all steel plates, and the bottom plate 21 and the side plates, and the top plate and the side plates are welded respectively.

[0042] Preferably, auxiliary plates 27 are welded to the outer roots of the plurality of side plates to further enhance the overall stability of the protective cover 20 .

[0043] In an optional example of this embodiment, a plurality of anchor bolt assemblies 60 are further provided between the bottom plate 21 and the concrete anchor 10, each anchor bolt assembly 60 includes an anchor bolt 61, a washer 63 and at least one nut 62, one end of the anchor bolt 61 is pre-buried in the concrete anchor 10, and the other end of the anchor bolt 61 sequentially passes through the bottom plate 21, the washer 63 and the nut 62. The plurality of anchor bolt assemblies 60 further increase the connection strength between the bottom plate 21 and the concrete anchor 10, prevent the protective cover 20 and the concrete anchor 10 from being separated, and improve the stability of the protective structure of the main cable distribution section of the suspension bridge.

[0044] Furthermore, one end of the anchor bolt 61 pre-buried in the concrete anchor 10 is bent, which further improves the connection strength between the bottom plate 21 and the concrete anchor 10 .

[0045] Furthermore, the anchor bolt assembly 60 includes a plurality of nuts 62 , and the other end of the anchor bolt 61 passes through the bottom plate 21 , the gasket 63 and the plurality of nuts 62 in sequence, thereby effectively preventing the anchor bolt 61 and the nut 62 from loosening.

[0046] In an optional example of this embodiment, a plurality of anchor bolt assemblies 60 are respectively provided on both sides of each side plate.

[0047] Furthermore, the anchor bolt assemblies 60 are arranged in pairs, and the two anchor bolt assemblies 60 in each pair of anchor bolt assemblies 60 are symmetrically arranged along the central axis of the side plate.

[0048] In an optional embodiment of the present invention, the protective cover 20 adopts a special-shaped box structure, thereby taking into account the stress, aesthetics and cost.

[0049] In this embodiment, those skilled in the art can adjust the specific shape of the protective cover 20 according to actual construction needs.

[0050] In an optional example of this embodiment, the top plate 22 is arranged to be inclined relative to the bottom plate 21. This not only takes the aesthetics into consideration, but also reduces the amount of steel plates used and saves the cost.

[0051] In an optional example of this embodiment, the plurality of side panels are respectively a front side panel 23, a rear side panel 24, a left side panel 25 and a right side panel 26. The front side panel 23, the left side panel 25, the rear side panel 24 and the right side panel 26 are connected end to end and enclose a cylindrical body with a quadrilateral cross section, and the bottom panel 21 and the top panel 22 are respectively located at two ends of the cylindrical body.

[0052] In an optional example, the left side plate 25 and the right side plate 26 are arranged perpendicular to the bottom plate 21 , and the front side plate 23 and the rear side plate 24 are arranged obliquely to the bottom plate 21 .

[0053] In an optional example, the rear side plate 24 is a V-shaped plate, and the angle between the rear side plate 24 and the left side plate 25 and the angle between the rear side plate 24 and the right side plate 26 are greater than 90 degrees, effectively preventing rainwater from accumulating on the surface of the steel plate front side plate 23.

[0054] Preferably, the included angle between the rear side plate 24 and the left side plate 25 and the included angle between the rear side plate 24 and the right side plate 26 are both 94.6°.

[0055] In an optional example, the inspection manhole 50 and the drain hole 40 are both opened at the bottom of the front side plate 23 .

[0056] In an optional example, the top plate 22 is arranged to be inclined relative to the front side plate 23 and the rear side plate 24 .

[0057] In an optional embodiment of the present invention, the top plate 22 is formed by splicing two plates, each of which is provided with a notch for matching, and after the two plates are spliced, the two notches are combined into a reserved hole. With the above structure, after the main cable of the suspension bridge is installed, the two plates are installed, which will not cause wear to the main cable.

[0058] Please refer to Figures 1 to 5 Now, a specific implementation method of the main cable scattered cable section protection structure of the suspension bridge proposed by the present invention is described in detail in conjunction with an embodiment.

[0059] In this embodiment, the main cable protection structure of the suspension bridge mainly includes a concrete anchor 10, a bottom plate 21, a top plate 22, a front side plate 23, a rear side plate 24, a left side plate 25, a right side plate 26 and a plurality of pre-buried anchor bolt assemblies 60.

[0060] During construction, the bottom plate 21 is embedded in the concrete anchor 10 and connected and fixed by the embedded anchor bolt assembly 60. The embedded anchor bolt assembly 60 is located on both sides of the side plates (front side plate 23, rear side plate 24, left side plate 25, right side plate 26) and is symmetrically arranged along the central axis of the side plates. The front side plate 23, rear side plate 24, left side plate 25, and right side plate 26 are welded to form a whole, and the angle between the rear side plate 24 and the left side plate 25 (right side plate 26) is 94.6°, which effectively prevents rainwater from accumulating on the surface of the rear side plate 24. Auxiliary plates 27 are welded on the outside of the front side plate 23, rear side plate 24, left side plate 25, and right side plate 26 to enhance the overall structural stability. A drainage hole 40 is provided at the bottom of the front side plate 23, and an inspection manhole 50 is provided at the bottom of the front side plate 23 to facilitate the inspection and maintenance of each unit cable strand 1 and its anchor connector 3 and loose cable sleeve 2. The two plates of the top plate 22 are welded together, and the middle notch is aligned to form a circular reserved hole for the main cable of the suspension bridge to pass through. The inner wall of the reserved hole and the joint between the main cable of the suspension bridge are filled with sealing paste for sealing.

[0061] The main cable cable segment protection structure of the suspension bridge proposed by the present invention embeds a bottom plate 21 in a concrete anchor 10 and sets a protection cover 20 based on the bottom plate 21. While the main cable cable segment is wrapped with an anti-corrosion material, the main cable cable segment protection structure of the suspension bridge is set, so as to further enhance the anti-corrosion effect of the main cable cable segment and prevent the main cable cable segment of the suspension bridge from being corroded by rainwater and corrosive gases.

[0062] The detailed explanation of the above-mentioned embodiments is only intended to explain the present invention so as to facilitate a better understanding of the present invention. However, these descriptions cannot be interpreted as limitations on the present invention for any reason. In particular, the various features described in different embodiments may also be arbitrarily combined with each other to form other embodiments. Unless there is a clear description to the contrary, these features should be understood to be applicable to any embodiment and are not limited to the described embodiments.

Claims

1. A suspension bridge main cable braiding section protection structure, characterized in that: The protective structure of the main cable of the suspension bridge includes a concrete anchor and a protective cover. The protective cover is fixedly arranged on the concrete anchor. The interior of the protective cover is hollow and forms a receiving cavity. The outer wall of the protective cover is provided with a reserved hole connected to the receiving cavity. The main cable of the suspension bridge passes through the reserved hole and extends into the receiving cavity. The main cable of the suspension bridge is dispersed into a plurality of unit cable strands in the receiving cavity. Each unit cable strand passes through the protective cover and is fixedly connected to the concrete anchor.

2. The main cable braiding section protection structure of a suspension bridge according to claim 1, characterized in that: The inner diameter of the reserved hole is larger than the outer diameter of the main cable of the suspension bridge, and sealing paste is filled between the outer wall of the main cable of the suspension bridge and the inner wall of the reserved hole.

3. The main cable braiding section protection structure of a suspension bridge according to claim 1, characterized in that: A water leakage hole communicating with the accommodating cavity is provided on the outer wall of the protective cover.

4. The main cable braiding section protection structure of a suspension bridge according to claim 1, characterized in that: An inspection manhole communicating with the accommodating cavity is provided on the outer wall of the protective cover.

5. The protective structure for the main cable of a suspension bridge as claimed in claim 4, characterized in that: The inspection manhole is detachably provided with a blocking plate.

6. The main cable braiding section protection structure of a suspension bridge according to claim 1, characterized in that: The protective cover includes a bottom plate, a top plate and a plurality of side plates, wherein the bottom plate, the top plate and the plurality of side plates are enclosed in a box-like structure, the bottom plate is pre-buried in the concrete anchor, and the reserved holes are opened in the top plate.

7. The protective structure for the main cable of a suspension bridge as claimed in claim 6, characterized in that: A plurality of anchor bolt assemblies are also arranged between the base plate and the concrete anchor, each of the anchor bolt assemblies comprises an anchor bolt, a gasket and at least one nut, one end of the anchor bolt is pre-buried in the concrete anchor, and the other end of the anchor bolt passes through the base plate, the gasket and the nut in sequence.

8. The protective structure for the main cable of a suspension bridge as claimed in claim 7, characterized in that: One end of the anchor bolt pre-buried in the concrete anchor is bent.

9. The main cable braiding section protection structure of a suspension bridge according to claim 7, characterized in that: A plurality of anchor bolt assemblies are respectively arranged on both sides of each of the side plates.

10. The protective structure for the main cable of a suspension bridge as claimed in claim 6, characterized in that: The top plate is arranged obliquely to the bottom plate.

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