Main cable anchoring structure

Abstract

The utility model belongs to the technical field of bridge cables, and particularly relates to a main cable anchoring structure. The main cable anchoring structure comprises anchor body concrete, a rear anchor beam connected with the anchor body concrete, a plurality of anchor rod connectors connected to the rear anchor beam and a plurality of anchor rods with the same length, the first ends of the anchor rods can be connected with a main cable, the second ends of the anchor rods can be connected to the rear anchor beam through the anchor rod connectors, the anchor rod connectors are fixedly connected to the rear anchor beam, and the anchor rod connectors are fixedly connected to the rear anchor beam. And the mounting direction of the anchor rod joint relative to the rear anchor beam is the same as the mounting direction of the anchor rod butted with the anchor rod joint relative to the rear anchor beam, so that a plurality of anchor rods in different mounting directions are connected to the rear anchor beam. According to the main cable anchoring structure, the anchor rods with the same length are adopted, and the production efficiency of parts is improved; and each anchor rod joint is in butt joint with each anchor rod and is fixedly connected to the rear anchor beam in the mounting direction required by each anchor rod, so that the anchor rods are convenient to mount, and the field construction efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of bridge cables, and in particular relates to a main cable anchoring structure. Background Art

[0002] The construction of various suspension bridges is of great significance for promoting the optimization and development of regional traffic and improving the layout of cross-river channels. In the construction of suspension bridge projects, the anchor structure used to fix the cables is one of the main load-bearing components of the bridge. The installation accuracy of the main cable anchor structure is the key to the construction control of large-span suspension bridges. Common main cable anchor structures usually contain rear anchor beams and anchor rods. In the actual installation process, in order to ensure better installation accuracy, multiple adjustments and corrections are required. However, due to the large and heavy structural characteristics of the anchor rods and rear anchor beams, the construction efficiency on site is affected. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a main cable anchoring structure, aiming to solve the problem that the installation between the anchor rod and the rear anchor beam is inconvenient to construct.

[0004] The utility model provides a main cable anchoring structure, comprising an anchor body concrete, a rear anchor beam connected to the anchor body concrete, a plurality of anchor rod joints connected to the rear anchor beam, and a plurality of anchor rods of the same length, wherein the first end of the anchor rod can be connected to the main cable, the second end of the anchor rod can be connected to the rear anchor beam via the anchor rod joint, the anchor rod joint is fixedly connected to the rear anchor beam, and the installation direction of the anchor rod joint relative to the rear anchor beam is the same as the installation direction of the anchor rod connected to the anchor rod joint relative to the rear anchor beam, so as to connect a plurality of anchor rods with different installation directions to the rear anchor beam.

[0005] In other embodiments, the cross-sectional shape of the anchor joint is the same as the cross-sectional shape of the anchor.

[0006] In other embodiments, the cross-sectional shape is H-shaped, the anchor rod joint comprises two oppositely disposed joint panels and a joint web connected between the two joint panels, and the joint panels are welded to the rear anchor beam.

[0007] In other embodiments, a docking plate is further included, two ends of which are respectively connected to the anchor rod and the anchor rod joint, and the docking plate can be matched with bolts to achieve the connection between the anchor rod and the anchor rod joint.

[0008] In other embodiments, the rear anchor beam includes two relatively arranged "[" shaped beams, and the two relatively arranged "[" shaped beams are connected via a connecting plate to form a "][" cross-sectional structure, and a partial structure of the anchor rod joint extends between the two relatively arranged "[" shaped beams and is fixedly connected to the "[" shaped beams.

[0009] In other embodiments, the rear anchor beam further includes a plurality of stiffening ribs, and the plurality of stiffening ribs are fixedly connected to the “[”-shaped beam.

[0010] In other embodiments, a sealant layer is provided on the outer sides of the anchor rod and part of the structure in the anchor rod joint.

[0011] Beneficial effects: The utility model provides a main cable anchoring structure comprising anchor body concrete, a rear anchor beam, a plurality of anchor rod joints connected to the rear anchor beam, and a plurality of anchor rods of the same length. The anchor rod joint is fixedly connected to the rear anchor beam, and the installation direction of the anchor rod joint relative to the rear anchor beam is the same as the installation direction of the anchor rod connected to the anchor rod joint relative to the rear anchor beam, so as to connect a plurality of anchor rods with different installation directions to the rear anchor beam. The main cable anchoring structure adopts anchor rods of the same length, which improves the production efficiency of parts; each anchor rod joint is connected to each anchor rod respectively and fixedly connected to the rear anchor beam in the required installation direction of each anchor rod to facilitate the installation of the anchor rod, thereby improving the construction efficiency on site. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of assembling some structures of the main cable anchoring structure in the embodiment of the utility model;

[0013] Figure 2 This is a schematic diagram of the connection between the rear anchor beam and one of the anchor rod joints in the embodiment of the utility model;

[0014] Figure 3 It is a schematic diagram of the connection between the rear anchor beam and a plurality of anchor rod joints in the embodiment of the utility model;

[0015] Figure 4 for Figure 1 A magnified schematic diagram of the middle area A;

[0016] In the figure, 1 is a rear anchor beam, 11 is a "["-shaped beam, 12 is a stiffening rib, 13 is a connecting plate, 2 is an anchor rod, 21 is a first end, 22 is a second end, 3 is an anchor rod joint, 31 is a joint panel, 32 is a joint web, and 4 is a butt plate. DETAILED DESCRIPTION

[0017] A main cable anchoring structure, such as Figures 1 to 4As shown, it includes an anchor body concrete, a rear anchor beam 1 connected to the anchor body concrete, a plurality of anchor rod joints 3 connected to the rear anchor beam 1, and a plurality of anchor rods 2 of the same length, the first end 21 of the anchor rod 2 can be connected to the main cable, the second end 22 of the anchor rod 2 can be connected to the rear anchor beam 1 via the anchor rod joint 3, the anchor rod joint 3 is fixedly connected to the rear anchor beam 1, and the installation direction of the anchor rod joint 3 relative to the rear anchor beam 1 is the same as the installation direction of the anchor rod 2 connected to the anchor rod joint 3 relative to the rear anchor beam 3, so as to connect a plurality of anchor rods 2 with different installation directions to the rear anchor beam 1. In the application of the main cable anchoring structure, since the lengths from the cable-releasing point to the rear anchor beam 1 of each bundle after the main cable enters the anchor concrete and is spread out are different, compared with the common anchor rod structure, the main cable anchoring structure is provided with anchor rods 2 of uniform length, which is convenient for production and manufacturing, and improves the production efficiency of the main cable anchoring structure; and, the design length of the anchor rods 2 adopts a uniform size, and the length surplus of each bundle is concentrated at the anchor rod joint 3 at the connection between the anchor rod 2 and the rear anchor beam 1, and each anchor rod joint 3 is respectively connected to each anchor rod 2 and fixedly connected to the rear anchor beam 1 in the required installation direction of each anchor rod 2 to facilitate the installation of the anchor rod 2, thereby improving the on-site construction efficiency of the main cable anchoring structure.

[0018] In another embodiment, the cross-sectional shape of the anchor joint 3 is the same as the cross-sectional shape of the anchor 2. The anchor joint 3 and the anchor 2 adopt the same cross-sectional shape at the joint, which is not only convenient for jointing, but also the structure after jointing is conducive to the uniform transmission of the main cable strand force during application, reduces the adverse stress caused by different structures, and effectively improves the service life of the main cable anchoring structure. Furthermore, the cross-sectional shape of the joint between the anchor joint 3 and the anchor 2 is H-shaped, and the anchor joint 3 includes two relatively arranged joint panels 31 and a joint web 32 connected between the two joint panels 31, and the joint panel 31 is welded to the rear anchor beam 1. This joint section is not only simple in structure and easy to implement, but also has enough space to arrange the connection auxiliary parts between the two, so that the connection between the two is more firm, thereby improving the working stability of the main cable anchoring structure.

[0019] In another embodiment, the main cable anchoring structure further includes a docking plate 4, the two ends of which are respectively docked with the anchor rod 2 and the anchor rod joint 3, and the docking plate 4 can cooperate with bolts to achieve the connection between the anchor rod 2 and the anchor rod joint 3. By providing the docking plate 4 to connect the anchor rod 2 and the anchor rod joint 3, the thickness of the connection structure between the two is enhanced, that is, the structural strength between the two is enhanced, and the working stability of the main cable anchoring structure is further improved. Preferably, the connection between the docking plate 4 and the anchor rod 2 or the anchor rod joint 3 is a bolt connection, and high-strength bolts are used there to further improve the working stability of the main cable anchoring structure.

[0020] In another embodiment, the rear anchor beam 1 includes two relatively arranged "["-shaped beams 11, and the two relatively arranged "["-shaped beams 11 are connected via a connecting plate 13 to form a "]["-shaped cross-sectional structure, and a partial structure of the anchor rod joint 3 extends between the two relatively arranged "["-shaped beams 11 and is fixedly connected to the "["-shaped beams 11. The rear anchor beam 1 with the "]["-shaped cross-sectional structure forms a frame-type box structure with a certain accommodating space, which facilitates the installation between the rear anchor beam 1 and the anchor body concrete, so that the rear anchor beam 1 is more firmly connected to the anchor body concrete, thereby improving the working stability of the main cable anchoring structure. Furthermore, the rear anchor beam 1 also includes a plurality of stiffening ribs 12, and the plurality of stiffening ribs 12 are fixedly connected to the "["-shaped beam 11. The main cable anchoring structure further diffuses the main cable force along the main cable spreading direction through the anchor rod 2, and then transmits it to the rear anchor beam 1 at the rear end of the anchor body concrete. The main cable force is transmitted to the anchor body concrete through the pressure-bearing surface of the rear anchor beam 1. The setting of the stiffening rib 12 improves the strength of the pressure-bearing surface. The improvement of the pressure-bearing surface strength further improves the working stability of the main cable anchoring structure.

[0021] In another embodiment, a sealant layer is provided on the outer side of some structures in the anchor rod 2 and the anchor rod joint 3. The provision of the sealant layer can further reduce the chronic corrosion of the anchor rod 2 and the anchor rod joint 3 during use. Preferably, the embedded part of the anchor rod 2 from 20 cm above the front anchor surface of the anchor body concrete to the connection with the rear anchor beam 1, including the anchor rod joint 3 protruding from the rear anchor beam 1, adopts an ultra-low modulus high elongation polysulfide anti-corrosion sealant layer, wherein the thickness of the sealant layer is preferably 4 mm, so as to achieve a better protective effect.

[0022] In another embodiment, a plurality of anchor rods 2 of the same length include single-beam anchor rods and double-beam anchor rods, and the cross section of the first end of the single-beam anchor rod is different from the cross section of the first end of the double-beam anchor rod. By setting different anchor rod 2 structures, the main cable can be better docked and the main cable strand force can be better transmitted. The distribution of the single-beam anchor rod and the double-beam anchor rod in the anchor body concrete is adjusted according to the distribution of the main cable strand force in the main cable docking. There will be multiple combinations of anchor rods 2 in multiple rear anchor beams 1, for example, one rear anchor beam 1 docks multiple double-beam anchor rods, one rear anchor beam 1 docks multiple single-beam anchor rods, and one rear anchor beam 1 docks multiple double-beam anchor rods and single-beam anchor rods. In this embodiment, a total of 109 anchor rods are arranged on one end of the anchor body concrete corresponding to each main cable. Among them, there are 39 single-beam anchor rods and 70 double-beam anchor rods, one of which is connected to 15 single-beam anchor rods by a rear anchor beam 1, one of which is connected to 14 double-beam anchor rods, one of which is connected to 2 single-beam anchor rods and 11 double-beam anchor rods, one of which is connected to 1 single-beam anchor rod and 10 double-beam anchor rods, and one of which is connected to 9 single-beam anchor rods. The specific distribution of the anchor rods 2 can better transmit the main cable strand force, thereby improving the working stability of the main cable anchoring structure. Preferably, the cross-section of the first end of the double-beam anchor rod is a double-sided double longitudinal rib combined cross-section structure, and the cross-section of the first end of the single-beam anchor rod is a box-type cross-section structure. By setting different cross-sections to connect the main cable, different end face joints are corresponding to different distributions of the main cable strand force, so as to better transmit the main cable strand force and improve the working stability of the main cable anchoring structure.

[0023] The above implementation modes are exemplary, and their purpose is to illustrate the technical concept and features of the utility model so that people familiar with the technology in this field can understand the content of the utility model and implement it accordingly, and they cannot be used to limit the protection scope of the utility model. Any equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A main cable anchoring structure, characterized in that: It includes an anchor body concrete, a rear anchor beam connected to the anchor body concrete, a plurality of anchor rod joints connected to the rear anchor beam, and a plurality of anchor rods of the same length, wherein the first end of the anchor rod can be connected to the main cable, the second end of the anchor rod can be connected to the rear anchor beam via the anchor rod joint, the anchor rod joint is fixedly connected to the rear anchor beam, and the installation direction of the anchor rod joint relative to the rear anchor beam is the same as the installation direction of the anchor rod connected to the anchor rod joint relative to the rear anchor beam, so as to connect a plurality of anchor rods with different installation directions to the rear anchor beam.

2. The main cable anchoring structure according to claim 1, characterized in that: The cross-sectional shape of the anchor rod joint is the same as the cross-sectional shape of the anchor rod.

3. The main cable anchoring structure according to claim 2, characterized in that: The cross-sectional shape is H-shaped, and the anchor rod joint comprises two oppositely arranged joint panels and a joint web connected between the two joint panels, and the joint panels are welded to the rear anchor beam.

4. The main cable anchoring structure according to claim 1, characterized in that: It also includes a butt joint plate, two ends of which are respectively butt jointed with the anchor rod and the anchor rod joint, and the butt joint plate can be matched with bolts to achieve the connection between the anchor rod and the anchor rod joint.

5. The main cable anchoring structure according to claim 1, characterized in that: The rear anchor beam comprises two relatively arranged "[" shaped beams, the two relatively arranged "[" shaped beams are connected via a connecting plate to form a "][" cross-sectional structure, and a partial structure of the anchor rod joint extends between the two relatively arranged "[" shaped beams and is fixedly connected to the "[" shaped beams.

6. The main cable anchoring structure according to claim 5, characterized in that: The rear anchor beam also includes a plurality of stiffening ribs, and the plurality of stiffening ribs are fixedly connected to the "["-shaped beam.

7. The main cable anchoring structure according to claim 1, characterized in that: A sealing adhesive layer is provided on the outer sides of the anchor rod and a part of the structure in the anchor rod joint.

Images