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A long-span heavy-duty slideway beam for dragging

A slide girder, long-span technology, applied in bridges, bridge materials, bridge construction, etc., can solve problems such as inability to meet construction requirements, and achieve the effects of high overall structural strength, strong compressive capacity, and simple structure

Active Publication Date: 2016-03-23
中铁十局集团第四工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The steel-concrete composite truss girder weighs 2400t, that is, the slideway beam on each side of the beam body needs to bear the pressure of 1200t, and under such a large pressure, the maximum deflection of the slideway at the mid-span of 14.6m is required to be ≯20mm, and general steel or It is the steel beam that cannot meet the construction requirements

Method used

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  • A long-span heavy-duty slideway beam for dragging
  • A long-span heavy-duty slideway beam for dragging
  • A long-span heavy-duty slideway beam for dragging

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with accompanying drawing and non-limiting embodiment:

[0033] as attached figure 1 - attached Figure 7 , attached Figure 14 - attached Figure 16 As shown, a long-span heavy-duty slideway beam for dragging is assembled and connected longitudinally by a plurality of assembled segments. The slideway beam shown in this embodiment is composed of an assembled segment A1, an assembled segment B2, an assembled segment C3, and an assembled segment D4. Each assembled section includes two identical I-shaped steel beams 9 arranged side by side, and the upper surfaces of the two I-shaped steel beams 9 form a plane as a sliding surface of the slideway beam. Both sides of the web of each I-beam 9 in the assembled segment are provided with several reinforcing ribs, including: transverse reinforcing ribs 6, longitudinal reinforcing ribs 10, short reinforcing ribs 11, etc. The upper and lower parts of the adja...

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Abstract

The invention discloses a large-span overload slideway beam for pulling and belongs to the technical field of bridge construction. The large-span overload slideway beam for pulling is formed by longitudinally splicing multiple splicing sections; each splicing section comprises two identical I steel beams arranged in parallel, wherein the upper surfaces of the two I steel beams serve as a plane being a slide surface of the slideway beam; the two I steel beams of each splicing section are fixedly connected together by bolts; two adjacent splicing sections are longitudinally spliced by high-strength bolts through a connection plate; the positions, with longitudinal splicing bolt holes, of the connection plates and the I steel beams are subjected to aluminum spraying treatment. The large-span overload slideway beam for pulling is reasonable in structure, high in integral structural strength, high in rigidity, high in pressure resistance, convenient to splice, smaller in hanging difficulty and favorable for reduction of a work period, the deflection of the slideway beam is effectively reduced, and the sliding safety of the combined beam is ensured while the investment is furthest reduced.

Description

technical field [0001] The invention relates to a large-span heavy-duty slideway beam for dragging, which belongs to the technical field of bridge construction. Background technique [0002] The 88m steel-concrete composite truss girder of the Zhenjiang Super Bridge on the Shaoguan decompression line adopts the "key technology of lateral dragging construction of large-span steel-concrete composite truss beams spanning busy railway trunk lines", and the beam body steel structure assembly and prestressed steel bars need to be assembled on the side of the Beijing-Guangzhou line The pouring construction of the concrete beam, and then remove the construction support at the bottom of the beam and use the traversing device to drag it in place on the slideway beam. [0003] The steel-concrete composite truss girder weighs 2400t, that is, the slideway beam on each side of the beam body needs to bear the pressure of 1200t, and under such a large pressure, the maximum deflection of the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D21/00
CPCE01D21/06E01D2101/30
Inventor 杨基好杜彪胡新贵张振伟乐叶伟王憬丁国才许岩孙后祥周亚飞王成
Owner 中铁十局集团第四工程有限公司
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