SU1366577A1 - Ferroconcrete bridge span structure - Google Patents

Abstract

The invention relates to bridge construction and can be used both in the construction of new, and in the reconstruction and strengthening of existing reinforced concrete bridges. The aim of the invention is to reduce the consumption of materials and increase the carrying capacity of the span, bridge structure. The reinforced concrete span of the bridge includes the assembly of main beams 1 combined with each other along slab 2 by a longitudinal seam 3 with monolithing and transverse diaphragms 4 connected to the walls of the 5 main beams I and the seam 3 of monolithing. The transverse diaphragm is made in the form of a horizontal strut 6, fitted at the ends with embedded metal plates 7 and a stand 8 in the middle, with the upper end of the stand 8 fixed in the concrete of the longitudinal seam 3 of monolithing through reinforcing loop release 9. The lower parts of the 5 main beams 1 are fitted with paired metal angles 10, fixed to the wall 5 by bolts 11, passed into the horizontal holes 12 of the wall 5. Free shelves. 13 corners 10 are connected to Zac. fine plates 7 spacers 6 overlays 14 by means of welded 15 or 16 bolted connections. Holes 12. form in the new main beams 1 in their manufacture, and in the existing - by drilling walls. 2 Il. i OS re C35 sd ch1

Description

1136

The invention relates to bridge construction and can be used both in the construction of new reinforced concrete bridges and in the reconstruction and strengthening of existing ones.

The purpose of the invention is to reduce the material capacity and increase the carrying capacity of the span,

Fig. 1 shows a fragment of the cross section of the span; in fig. 2 - junction of the transverse diaphragms and the wall of the main beam, bottom view.

The reinforced concrete span of the bridge includes prefabricated Tavrovy main beams 15 interconnected along slab 2 by a longitudinal seam 3 of it nolichivanie and transverse diaphragms 4 connected to the walls 5 of the main beams 1 and the monolithic gap 3. Each transverse diaphragm is made in the form of a horizontal strut 6 , provided at the ends of embedded vertical metal plates 7.

The strut 6 is made with a stand 8 in the middle, the upper end of the stand 8 is fixed in the concrete of the longitudinal joint 3 homogenized by means of a reinforcing loop release 9. The lower parts of the walls 5 of the main beams 1 are equipped with paired metal angles 10 fixed to the wall 5 with bolts 11 missed in horizontal holes x .12 walls 5. Free shelves of 13 corners 10 are connected with embedded plates 7 spacers 6 overlays 14 by means of welded 15 or 16 bolted joints.

When new bridges are erected, holes Р1 12 are formed in the walls 5 of the main beams 1 when they are made, and the corners 10 are fixed on the walls 5 before the main beams 1 are mounted. Diaphragms 4 are mounted after installing the main beams 1 in the design position before homogenising the longitudinal seams 3.

When reconstructing and reinforcing existing spans, the holes 12 are drilled in the walls 5 of the main beams 1 from below, with light scaffolding (not shown). Then, the corners 10 are installed, when working from above, the reinforcement outlets of the longitudinal seam 3 are molded in the joints of the loop outlets 9 of the pillars 8, the diaphragms 4 are mounted below, the joints of the racks 8 with the slab 2 are attached to the corners 10.

The use of this design allows to increase the carrying capacity of the span due to a more uniform inclusion of the main beams in the work on the eccentric load by taking into account the spatial work of the system, which ultimately leads to a decrease in the material intensity of the span.

Claims (1)

Invention Formula The reinforced concrete span, including prefabricated T-shaped main beams, interconnected along the slab with longitudinal homologous seams and transverse diaphragms connected to the walls of the main beams, characterized in that, in order to reduce the material intensity and increase the carrying capacity of the span, there would be in the same way, in the case of reducing the material intensity and increasing the carrying capacity of the transom, the diaphragm would have a heart and the diaphragm would have a heart and the diaphragm would have a heart and the diaphragm would have a heart and the diaphragm would have a heart and the diaphragm would have a heart and the diaphragm would have a heart and the diaphragms should have a spaced pattern and the diaphragm should have a space and the diaphragm will have the same pattern, and if the distance is greater than the diaphragm, there will be in the same time, in the case of reducing the material intensity and increasing the load capacity of the superstructure, the transverse diaphragms will have the same pattern and the diaphragm will have the same pattern, if the distance between the diaphragm and the superstructure is higher their metal plates at the ends of the struts with vertical posts in the middle, and the lower parts of the walls of the main beams are fitted with paired metal corners fastened interm COROLLARY bolts in missed formed in the walls of the horizontal openings, the ends of the spacers fixedly connected to the corners of plates, and the upper ends of the uprights are secured in the respective longitudinal seam grouting by reinforcing loop issues. 10 16/5 rs v fig.g