A method of manufacturing a focused super-long rear anchor beam
A production method and focused technology, applied in bridges, bridge materials, bridge construction, etc., can solve problems affecting the durability of anchorage systems, concrete stress concentration, concrete cracking, etc., to ensure strength, reduce cumulative errors, reduce The effect of welding deformation
Active Publication Date: 2019-03-19
中铁山桥(南通)有限公司
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Problems solved by technology
The disadvantage of this steel frame rear anchor beam anchorage system is that the force transmission is concentrated on the single bearing surface of the upper flange of the rear anchor beam, resulting in excessive concentration of concrete stress and the risk of cracking inside the concrete. The joint surface of solid concrete is subject to tension, and it is easy to form gap water, which affects the durability of the anchorage system
Method used
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Embodiment
[0020] The manufacturing method of the focused super-long rear anchor beam in this embodiment includes the following steps:
[0021] (1) Groove unit 1 unit production: such as figure 2 As shown, the upper cover 11, lower cover 12, web 13, horizontal longitudinal rib 14 and vertical stiffener 15 are prepared first, and then the upper cover 11, lower cover 12, web 13, horizontal Longitudinal ribs 14 and vertical stiffeners 15 are leveled, and the flatness is strictly controlled to be ≤0.3mm. Then, the web 13 is marked to draw a longitudinal center line, that is, the horizontal longitudinal rib position line. Draw a mid-span line perpendicular to the longitudinal center line, then assemble the upper and lower cover plates and webs on the platform, initially form a groove, and assemble the assembled upper cover plate 11, web plate 13, and lower cover plate 12 Weld with the web 13; then assemble and weld the horizontal longitudinal rib 14 along the position line of the horizontal...
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The invention relates to a manufacturing method for a focused overlong back anchor beam. The manufacturing method for the focused overlong back anchor beam includes the following steps of (1) manufacturing of a trough-type unit; (2) manufacturing of an anchor rod connector unit; (3) manufacturing of a baffle unit; and (4) whole assembly. The manufacturing method for the focused overlong back anchor beam has the advantages that the manufacturing method for the focused overlong back anchor beam fully considers the requirements for the shape and the high precision of each component, and achieves the purpose of reducing welding deformation by adopting a reasonable assembly sequence and a welding sequence, and meanwhile, unqualified vertexes do not enter a next procedure so as to reduce accumulative errors by enhancing control over the procedure process, and accordingly the machining precision of the back anchor beam is ensured greatly.
Description
technical field [0001] The invention belongs to the technical field of bridge manufacture, and in particular relates to a method for manufacturing a focused super-long rear anchor beam. Background technique [0002] In the design of suspension bridges, the main cables are the main load-bearing members. There are two main types of traditional main cable anchorage systems: one is the steel frame rear anchor beam anchorage system, and the other is the prestressed anchorage system. The steel frame rear anchor beam anchorage system is welded by anchor rods arranged along the main cable strand direction and rear anchor beams arranged perpendicular to the center of the main cable. The anchor rod has an "I" shaped cross-section, and the rear anchor beam adopts a lattice structure with solid webs along the direction of the anchor rod. The upper end of the anchor rod is connected with the main cable strand, and the lower end extends into the interior of the rear anchor beam and is w...
Claims
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IPC IPC(8): E01D19/14E01D21/00E01D101/30
CPCE01D19/14E01D21/00E01D2101/30
Inventor 宋红飞王钦国王文谈马浩鹏谢洲赵天宇杨超
Owner 中铁山桥(南通)有限公司