RU139819U1 - Cable-stayed adjustable vertical-lifting bridge - Google Patents

Abstract

1. Cable-stayed drawbridge vertical-drawbridge, consisting of cable-stayed beam spans and having in the navigable span a vertically elevated span and two pylons with four hollow racks, characterized in that all the pillar racks in the navigable span are used as lifting supports, inside of which are placed counterweights, traction winches and cable-and-hoist systems for moving up the span. 2. Cable-stayed drawbridge vertical-lifting bridge according to claim 1, characterized in that all the pylon racks at the top are rigidly interconnected along the facade and across the bridge with horizontal metal beams that are used as pedestrian bridges, while people are lifted by special viewing elevators, placed outside all pylon racks.

Description

The utility model relates to the field of bridge construction and can be used in the construction of road cable-stayed drawbridges, as a rule, in cities through wide navigable rivers.

There are various designs of large and extra-class cable-stayed drawbridge over wide and deep navigable rivers and straits (Byte bridges. A.A. Petrovsky et al. - M .: Transport, 1985. Metal bridges. NN Bychkovsky, A.F. Dankovtsev, in 2 parts, Saratov, 2005. Engineering constructions in transport construction, in 2 kN P.M. Salamakhin et al. - Moscow: Academy, 2008. Bulletin of bridge building. Journal. 2003, No. 1; 2).

To ensure the navigable overall height (up to 70 m and more), high supports are built, which requires significant material and financial costs for the bridge itself and for the installation of long overpass structures to them to provide design slopes for the entry of vehicles onto the bridge. However, such decisions are not always possible due to the lack of necessary territories, especially in the cramped conditions of urban buildings on the shores of a water barrier.

Also known is the design of a metal cable-stayed one-pylon drawbridge (Utility Model Patent No. 118319 dated 07/20/2012 "Metal cable-stayed one-pylon drawbridge"), in which a part of the cable-stayed span structure (VBPS) above the ship’s passage, adjacent directly to the pylon, It is disclosed by turning it upwards around the horizontal axis using the counterweights of the cable-and-tackle system and traction winches. These elements are placed inside both hollow pylon racks (reinforced concrete or metal).

The main disadvantage of the cable-stayed bridge is the following: during the period of the bridge layout, the non-movable part of the VBPS is kept from horizontal shift by its cables to the pylon with a special rigid metal stop placed in the bridge abutment. In addition, the non-movable part of the VBPS in the diluted position of the bridge can (like a cantilever) have significant transverse vibrations (amplitudes) when exposed to wind, which will complicate the process of disconnecting and connecting the adjustable and non-movable parts of the VBPS. The consequence of this may be the impossibility of wiring the bridge in strong winds.

There are also known constructions of vertical drawbridge (for example, across the Neva, Severnaya Dvina, Svir, and other rivers), in the navigable spans of which there are beam spans and two hoisting towers with elements of a cable-and-rail system and guides for vertical movement of the span buildings [Drawbridges. IN AND. Kryzhanovsky - M .: Transport, 1967].

The main disadvantage of the vertical drawbridge adopted for the prototype is the limitation of the navigable overall height. With the height of the towers greater than the width of the navigable span, such bridges become unprofitable due to the high cost of lifting towers.

The technical task of the utility model is to reduce material and financial costs for the construction of a cable-stayed drawbridge, as well as the use of all hollow pillar racks in the navigable span at the same time and as lifting supports for the vertical movement of the movable span to the design level.

The technical problem is solved due to the fact that the cable-stayed drawbridge vertical-lifting bridge, consisting of cable-stayed beam spans, has a vertical-lifting span and two pylons with four hollow pillars in the navigating span, characterized in that all pillar pillars in the navigating span are used as lifting supports, inside of which are placed counterweights, traction winches and cable-and-hoist systems for moving up the span. Moreover, all the pillar racks at the top are rigidly interconnected along the facade and across the bridge with horizontal metal beams that are used as pedestrian bridges. At the same time, people are lifted on them by special survey elevators located outside all pylon racks.

A utility model is illustrated in the drawing, where in FIG. 1 shows a diagram of a fragment of a cable-stayed bridge with a navigable span, where it is indicated:

a - section of the pylon strut with a counterweight, a traction winch and a rope-pulley hoist system for lifting the span;

b - a general view of the pylon strut bridge facade with cable-stayed fan system and a panoramic elevator;

c - transverse section of the bridge in the navigable span;

g - top view of the pylon support and parts of the lifting and cable-stayed beam spans;

1 - cable-stayed spans;

2 - lifting span;

3 - guys;

4 - pillar racks;

5 - stiffness beams;

6 - panoramic elevators;

7 - overview pavilions on the tops of pylon racks;

8 - counterweight;

9 - traction winch;

10 - supporting beam;

11 - pulley pulleys;

12 - console lifting (jack) beams lifting span;

13 - supporting parts;

14 - pylon support.

Cable-stayed drawbridge vertical-drawbridge is an extended structure consisting of several cable-stayed beam spans 1 and at least one vertical-lifting span 2 in the navigable span, as well as several pylon supports 14. Cable-stayed span structures 1 are supported by cables 3 fan system. The struts of the pylons 4 at the top are rigidly interconnected along the facade and across the bridge with metal beams.

Cable-stayed drawbridge vertical drawbridge works as follows. The lifting span 2 is moved upward using counterweights 8, traction winches 9, a rope-pulley system consisting of steel ropes (cables), various rollers 11, some of which are fixed on the support beam 10 and on four consoles 12 of the span 2.

In the lower (undiluted) position, the spans 1 and 2 are based on the supporting parts 13 located on the pylon supports 14 of the navigable span.

During the layout of the bridge, pedestrians, as well as maintenance personnel, can move from one part of the bridge to another along stiffeners 5, on which decking and railings are arranged. The people are lifted to the heads of the pillar racks 4 by panoramic elevators 6, which are attached to the front surfaces of the racks 4. Pavilions 7 (or canopies) with barriers can be mounted on the ends of the racks 4. These pavilions (or canopies) can also be used as observation platforms.

The mass of the counterweights, the power of the winches, and the tackles are calculated on the basis of data on the length and weight of the lifting span.

The utility model extends the use of pylon racks and simplifies the construction of supports in the navigable span.

Claims (2)

1. Cable-stayed drawbridge vertical-drawbridge, consisting of cable-stayed beam spans and having in the navigable span a vertically elevated span and two pylons with four hollow racks, characterized in that all the pillar racks in the navigable span are used as lifting supports, inside of which are placed counterweights, traction winches and cable-and-hoist systems for moving up the span. 2. Cable-stayed drawbridge vertical-drawbridge according to claim 1, characterized in that all the pylon racks at the top are rigidly interconnected along the facade and across the bridge with horizontal metal beams that are used as pedestrian bridges, while people are raised on them by special survey elevators located outside all pylon racks.

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