The superstructure

 

The invention relates to a bridge, namely the metal span structures, which can find application in overpasses, pedestrian bridges and galleries. The superstructure includes curved in the transverse direction of the main beam with longitudinal zones of rigidity and lateral reinforcing elements with a curvilinear shape, located along the axes of the bearing supports of the bridge deck to skip payload and protective translucent cover. What's new is that the main beam is made U - shaped sheet metal attached to its inner surface with a certain step by transverse diaphragms, having in the middle part of the horizontal platform, which laid the flooring for skipping payload, made in the form of steel plates, reinforced ribs, with the upper free ends of the sheet metal attached to the longitudinal belt rigidity of the fixing points of the protective translucent cover, and transverse reinforcing elements made in the form attached outside to the metal sheet and the longitudinal belt rigidity of the beam stiffness. The technical result of the invention is to create a rat is er="0">

The invention relates to a bridge, namely the metal span structures, which can find application in overpasses, pedestrian bridges and galleries.

Known metal superstructure of the pedestrian bridge, which includes a box-shaped in the cross section of the main beam with longitudinal belts stiffness, transverse diaphragms and horizontal space for the passage of the payload, made in the form of an orthotropic plate. Protective translucent cover attached to the lower belt span /1/.

The disadvantages described above of the superstructure of the pedestrian bridge can be attributed to increased glass area of the superstructure and the presence of inaccessible during operation of the sinus between the wall of the main beams and structural glazing.

The closest technical solution is the superstructure, including the main beam-shaped forms made of composite material, with longitudinal zones of rigidity, external transverse reinforcing elements, a horizontal platform for skipping payload, the lower zone of cellular construction, the cavity of which is filled with curable resin, and svedasztalos in large part to the complexity and mnogodelnosti manufacture and installation of joints and low durability of structures, made of composite material.

The proposed solution puts the technical problem of establishing an efficient, durable and convenient for installation and operation construction of the superstructure with a minimum consumption of glazing.

To solve the tasks in the proposed floating structure, including the main beam with longitudinal zones of hardness, transverse reinforcing elements, a horizontal platform for skipping payload, and a protective translucent cover, the main beam cross-section is made in the form of a curvilinear U-shaped sheet metal, provided with spaced with a certain step of the internal transverse orifice of variable height arranged in their middle part of the grounds, to which is attached the deck to pass the payload, and to the upper free ends of the sheet metal attached to the longitudinal belt stiffness mainly tubular form with attachment points translucent protective coating, and transverse reinforcing elements are located along the axes of the bearing supports of the bridge and made in the form attached externally to a curved metal sheet and p is aasnaes drawings, where in Fig.1 shows the superstructure cross-section along the axis of the bearing; Fig.2 shows the superstructure cross-section at mid-span Fig.3 General view of the superstructure (side view). The superstructure consists of the main beam 1, made in cross-section in the form of a curved sheet metal U - shaped 2. Transverse aperture 3 variable height attached with a certain step to the inner surface of a curved metal sheet 2. On the upper zone of the horizontal areas of the transverse diaphragms 3 stacked the deck 4 to skip payload, made in the form of steel plates, reinforced by ribs. To the upper free ends curved metal sheet 2 is attached to the longitudinal belt stiffness 5 mainly tubular form. Belt stiffness 5 installed fasteners 6 are attached with their help, translucent protective coating 7. The transverse reinforcing elements are located along the axes of the bearing supports of the bridge and made in the form of transverse beams hardness 8, attached externally to a curved metal sheet 2 and the longitudinal zones of rigidity 5.

This span is celtie into consideration:

1. Transport construction, No 6, 1998, pages 29-30 “Construction of elevated pedestrian crossings with metallic spans during the reconstruction of the ring road”.

2. French patent No 2636082, IPC: E 01 D 1/00, Appl. 06 September 1988, publ. 09 March 1990

Claims

1. The superstructure, including curved in the transverse direction of the main beam with longitudinal zones of rigidity and lateral reinforcing elements with a curvilinear shape, located along the axes of the bearing supports of the bridge deck to skip payload and translucent protective coating, characterized in that the main beam is made U-shaped sheet metal attached to its inner surface with a certain step by transverse diaphragms, having in the middle part of the horizontal platform, which laid the flooring for skipping payload, made in the form of steel plates, reinforced ribs, however, the upper free ends of the sheet metal attached to the longitudinal belt rigidity of the fixing points of the protective translucent cover, and transverse reinforcing elements made in the form attached outside Seesa fact, that longitudinal belts of rigidity made of tubular shape.



 

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