RU174293U1 - Bridge span package - Google Patents

Abstract

The utility model relates to the field of bridge construction, in particular to the span of a bridge of small spans, and is aimed at improving the operational reliability of the elements and components of the structure, reducing the construction time and reducing the complexity of mounting the bridge. The specified technical result is achieved by using the bridge span packages, which are a welded structure made in the form of a main beam with a horizontal thrust element and oblique thrust beams, while the main beam has additional connections for connecting with a horizontal supporting element, while the oblique beams are angled 20-60 ° to the main beam and are rigidly connected with a horizontal thrust element.

Description

The utility model relates to the field of bridge construction, in particular to the span bridge of small spans, and is intended for use in the construction of pedestrian and road small bridges.

From the prior art it is known span beam structure containing supports and / or abutments with racks and installed on them, at least one span, for example in the form of beams, and retaining walls in the area of the racks. Each retaining wall is made in a box-shaped form from profiled sheet elements, and is located in such a way that the pillars of abutments extend inside or outside the retaining wall, while the opposite sides of the retaining wall are interconnected by diaphragms (RU 60538, January 27, 2007).

Known span of the bridge from the unified elements of the plate-ribbed, box-shaped or U-shaped cross-section, made in the form of a crossbar of a single or multi-span closed frame with V-shaped supports from a set of struts of constant thickness along the facade, forming inclined walls in the transverse direction, the upper ends which have nodal associations with the crossbar of the frame, at an angle from 60 to 30 °, and the lower ones are interconnected, forming supporting sections for setting the span structure to high, above the level of high water and ice drift, channel supports, sn abzhennye supporting parts, or directly with the foundation, creating, respectively, undivided and spacer structures (RU 2291242, 10.01.2007).

The technical problem, which the proposed utility model is aimed at, is to expand the arsenal of technical means and create a bridge span, the parameters of which provide improved operational characteristics.

The technical result achieved by the implementation of this utility model is to increase the operational reliability of the work, reducing the erection time and reducing the complexity of mounting the bridge.

The specified technical result is achieved in the bridge span package, which is a welded structure made in the form of a main beam with a horizontal thrust element and oblique thrust beams, while the main beam has additional connections for connecting with a horizontal thrust element, while the oblique thrust beams are located under angle of 20-60 ° to the main beam and rigidly connected with it by a horizontal thrust element.

The main beam and the horizontal thrust element have a square or rectangular cross section, while the main beam has shelves for setting cross-links.

This design of the bridge span provides the ability to mount it in place in the shortest possible time.

The essence of the utility model is illustrated by drawings, where in FIG. 1 shows a side view of the bridge span; in FIG. 2 is a section AA in FIG. one.

The bridge span package is a prefabricated welded structure (supporting structure) - a unified factory-made package of horizontal beams rigidly connected into one system with oblique beams.

The bridge span is made in the form of a main longitudinal beam 1, rigidly (by welding) connected by means of additional connections 3 to a horizontal thrust element located under the main longitudinal beam 2, and oblique thrust beams 4.

Slanting beams 4 are located at an angle α 20-60 ° to the main beam 1 and are rigidly connected with the horizontal thrust element 2 and through additional connections 3 with the main beam 1.

The main beam 1 has shelves 5 for installing transverse ties (not shown).

The main beam 1 and the horizontal support element 2 have a square or rectangular section.

The angle between the oblique thrust beams and the main longitudinal beam is selected from the condition of ensuring permissible loads at the base of the bridge abutments, depending on the physicomechanical characteristics of the soil base of the shore supports.

The main beam and the horizontal thrust element of the span, as well as its oblique thrust beams, are manufactured at the factory. Connection of the elements of the package with each other is carried out by welding.

The bridge span consists of several unified packages identical to each other. The amount of packet data depends on the width of the bridge.

The fabricated packages are delivered to the construction site, then they are sequentially mounted on the bridge supports with the help of a crane and temporarily unfastened between themselves to ensure spatial rigidity. Then, permanent cross beams are installed that combine the packages (the packages are connected by transverse beams) into a single span structure of the bridge.

Claims (3)

1. The span package of the bridge, characterized in that it is a welded structure made in the form of a main beam with a horizontal thrust element and oblique thrust beams, while the main beam has additional connections for connection with a horizontal thrust element, while the oblique thrust beams are located at an angle of 20-60 ° to the main beam and are rigidly connected with a horizontal thrust element. 2. The bridge span package according to claim 1, characterized in that the main beam and the horizontal thrust element have a square or rectangular section. 3. The bridge span package according to claim 1, characterized in that the main beam has shelves for installing transverse connections.

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