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Beam spanning multilayer deck

A panel and bottom layer technology, applied in bridges, buildings, etc., can solve problems such as unfavorable full utilization, unfavorable girder height, difficulty in adapting to long-span girder bridge structures, etc., to save land resources and urban space, and improve vertical overall stability , Improve the effect of passing ability

Inactive Publication Date: 2010-09-15
马兴华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is to provide a beam spanning multi-layer bridge decks, which solves the problem that the beam bridge structure has been difficult to adapt to large spans, and the high beam height is not conducive to the setting of multi-layer bridge decks, and is not conducive to making full use of land and space. resource problem

Method used

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  • Beam spanning multilayer deck

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0096] Example 1: A1-type cross-story beam with grid-shaped cross section

[0097] see figure 1 , The cross-floor beam is integrally connected by the web 14 , the upper flange 12 , the lower flange 13 and the face plate 15 . The cross section is in the shape of a "Japanese" grid, with two webs 14 on both sides in the horizontal direction, and a layer of panels 15 between the upper flange 12 and the lower flange 13, forming a horizontal single hole and a vertical two-story beam inner channel , The net width of a single hole in the channel in the beam is ≥3.5m, ≤15m. The web 14 spans the inner channel of the second floor beam. Web 14 adopts straight web. The cross-story beam adopts a simply supported beam structure, a continuous beam structure or a rigid frame structure formed with the bottom column 10 . The cross-story beam adopts prestressed reinforced concrete structure, steel structure or combined structure of prestressed reinforced concrete and steel. The web 14 is rei...

Embodiment 2

[0098] Embodiment 2: A2-type cross-story beam with grid-shaped cross section

[0099] see figure 2 , A second-layer panel 15 is arranged between the upper flange 12 and the lower flange 13 to form a horizontal single hole and a vertical three-layer beam inner passage, and the web 14 spans the three-layer beam inner passage. All the other are the same as embodiment one.

Embodiment 3

[0100] Embodiment 3: A3-type cross-story beam with grid-shaped cross section

[0101] see image 3 , two webs 14 on both sides and one web 14 in the middle are arranged horizontally, and a layer of panels 15 is arranged between the upper flange 12 and the lower flange 13 to form a horizontal double hole and a vertical two-story beam inner channel, and the beam inner channel Single hole clear width ≥ 3.5m, ≤ 10m. The web 14 is not provided with ribs 16 , and the upper flange 12 , lower flange 13 and panel 15 are not provided with ribs 17 . All the other are the same as embodiment one.

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Abstract

The invention relates to a beam spanning a multilayer deck, which has the technical scheme that a web spans the multilayer deck; an upper flange, a lower flange, the web and a panel are integrally connected to work together to be used as a common beam in an interior passageway of the beam, and the interior passageway of the beam is used as a motor vehicle passageway, a trolleybus passageway, a track traffic passageway, a magnetic suspension passageway, a pipeline passageway and a pedestrian passageway. The invention has the technical effect that the beam can adapt to a large span when being used for a beam bridge and has economical efficiency; the trafficability can be improved when the beam is used for stayed-cable bridges or suspension bridges; and the beam has small solid thickness, and is favorable for the arrangement of the multilayer deck, utilization of land and space resources and intensive utilization of traffic passageway resources. The beam of the invention is suitable to be used as a simply-supported beam, a continuous beam, a rigid frame bridge main beam, a stayed-cable bridge main beam and a suspension bridge main beam of an elevated track, an elevated high-speed railway, an elevated magnetic suspension, an elevated trolleybus, an elevated road, a comprehensive elevated passageway, a multilayer river-crossing large bridge, a multilayer ocean-crossing large bridge and the like.

Description

Technical field: [0001] The invention belongs to the field of bridge engineering, and in particular relates to a beam used for bridge structures, a web spanning multi-layer bridge decks and integrally connected with upper flanges and lower flanges to work together as a common multi-layer bridge deck. Background technique: [0002] At present, there are various forms of bridge structures, which can generally be divided into arch bridge structures, beam bridge structures (including rigid frame bridge structures), cable-stayed bridge structures, suspension bridge structures, and truss bridge structures. Among them, the girder bridge structures with a span of more than 30m mainly include prestressed reinforced concrete simply supported T-beams and prestressed reinforced concrete continuous box girders. [0003] The prestressed reinforced concrete simply supported T-beam is composed of upper flange and web. The T-beam bridge is used for a single layer. Multiple T-beams are connec...

Claims

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Application Information

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IPC IPC(8): E01D2/00
Inventor 马兴华
Owner 马兴华
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