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Steel-structured passenger foot bridge

A portal frame and overpass technology, which is applied in erecting/assembling bridges, bridges, bridge construction, etc., can solve the problems of increased steps of overpasses, poor landscape effects, and lack of humanity, etc., and achieves the reduction of natural frequency, The effect of reducing engineering investment and preventing fatigue tearing

Active Publication Date: 2014-08-13
TIANJIN MUNICIPAL ENG DESIGN & RES INST
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of such a large beam height will bring a series of disadvantages: the structure is heavy and the landscape effect is not good; under the premise of satisfying the 5-meter clearance under the bridge, the number of steps to be set up for the overpass will increase, which is not humane enough

Method used

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  • Steel-structured passenger foot bridge
  • Steel-structured passenger foot bridge
  • Steel-structured passenger foot bridge

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Embodiment Construction

[0073] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:

[0074] Such as Figure 1 to Figure 3 As shown, this embodiment discloses a portal frame bridge structure, the tops of the No. 1 pier column 2-1 and the No. 2 pier column 2-2 are respectively inserted into the structure of the main girder 1 and integrated with the main girder 1 to ensure that the main girder 1, No. 1 pier column 2-1, and No. 2 pier column 2-2; the No. 1 pier column 2-1 at one end of the main beam 1 and the No. 1 concrete cap 3-1 are of a consolidated structure, The No. 2 pier column 2-2 at the other end of the main girder 1 and the No. 2 concrete cap 3-2 are hinged structures; an integral portal-type rigid frame flyover structure with one side consolidated and the other side hinged is adopted instead of the traditional simply ...

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Abstract

The invention discloses a portal frame overbridge structure and a construction method thereof; two ends of a main beam are supported on a 1# pier column and a 2# pier column respectively; the main beam is solidified with the 1# pier column and the 2# pier column; the connecting position of the 1# pier column and a 1# concrete bearing platform is a solidification construction; the connecting position of the 2# pier column and a 2# concrete bearing platform is an articulation construction; the depth-span ratio of the portal frame overbridge structure disclosed by the invention reaches to 1 / 28-1 / 35 and belongs to typical ultrathin beams; about 1 / 20-1 / 22 conventional depth-span ratio of a simply-supported steel case beam passenger foot bridge is broken greatly; the landscape demand of urban passenger foot bridge is satisfied; the base frequency of a foot bridge is improved greatly, thus, passengers feel more safely, more stably and more comfortably. According to the invention, the portal frame overbridge structure is characterized by simple construction and reliable transmission force and has good antifatigue performance and good durability; engineering investment is reduced; structural design, construction and application can be more reasonable; in addition, a structure has relatively strong comprehensive economic indicators in a full-life period and has wide application prospect.

Description

technical field [0001] The invention relates to a civil engineering bridge structure, in particular to an overpass structure and a construction method thereof. Background technique [0002] Pedestrian bridges are an important part of the urban landscape. On the basis of meeting the pedestrian traffic functions, they are gradually moving towards the comprehensive requirements of light structure, unique shape, large span, high bearing capacity, and convenient installation. Steel structures have gradually replaced concrete. The main material of the pedestrian bridge. Most of the current pedestrian bridges adopt the structural form of simply supported steel box girders. [0003] According to the design specification for urban pedestrian bridges and pedestrian tunnels (CJJ69-95), when the main span of pedestrian bridges with simply supported steel box girders is large, the girder height also needs to be increased accordingly. For example, when the span of the main span is 50m, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01D1/00E01D19/02E01D19/00E01D19/04E01D21/00
Inventor 曹景周莉刘旭锴张洪海唐颖田川孙东利邢锦姜锋陈龙
Owner TIANJIN MUNICIPAL ENG DESIGN & RES INST
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