The protection device bridge from side winds


E01D6 - Truss-type bridges
E01D19/10 - Railings; Protectors against smoke or gases, e.g. of locomotives; Maintenance travellers; Fastening of pipes or cables to bridges

 

(57) Abstract:

The protection device bridge from side winds refers to the construction of bridges, protect the bridge from side winds, leading to its destruction. The invention provides a simplification of the automation device control deformation of the bridge from the side of the wind through the use of wind power and simple mechanical devices and can increase the reliability of the bridge from the deformation of the crosswind (blast wave). The protection device bridge from side winds includes a bridge on piers and is equipped with automatic control device, consisting of sails-batteries, wind power, located on the guides with the ability to move them. Each end of the sail-battery wind power cable associated with meranoplini lever located on the fixed bearing and the other end neravnovesnogo lever connected managing cable respectively with adjacent construction of the bridge, and the sails, batteries, wind energy is either located in the middle part of the bridge or on the bridge in several places, either on both sides of the bridge on the Bank not less than four points. 6 Il.

The invention relates to the construction of bridges, protection cnie the construction of bridges, including kicking bridge to drive across the bottom and in the middle with a rigid lattice arches and puffs. Nodes belts arches are located on concentric circles, each zone consists of the same direct elements, all the diagonals are the same, the design is made with a minimum number of conductors. In the construction of bridges has a special wind farm, they are stationary, the efforts they do not change and are not regulated (see Belenja E. Streletskaya, I. N. N. and other Metal structures. A special course. - M.: Stroiizdat, 1982, S. 421).

The known device for absorbing vibrations from wind action, which uses aerodynamic fairings, through the device of the slits and cracks in the roadway and farms, installation of damping marks (see Bondar N. G. How are bridges. - Kiev: Naukova Duma, 1986, S. 116 - 117).

The lack of data structures of bridges is unreliable protection from side winds (blast wave), resulting in the destruction of the bridge, as proposed device is not fully or partially remove the deformation of the bridge from the effects of wind and not use the power of the wind.

Known protection device hanging bridge from exposure Vetrov, processing this information and implementation, and managed solutions using hydraulic devices and input power. This device is used as a prototype. (see A. Carotti, M. De. Miranda. E. Turel An activ protection system for wind induced vibrations of the pipe-line suspension bridges; struktral Control: Proceedings of the second International Symposium on Structural Control, University of Waterloo, Ontario, Canada, July 15-17; 1985, 1987, Martinus Nijhoff Publishers, Dordrecht-Boston-Lancaster, R j Mechanics, No. 12, 1995, 12B406).

The disadvantage of this device is the unreliability of the automatic protection of the bridge from the side of the wind due to the possible failure of the power supply, which is very likely with significant wind. In addition, the presence of a large number of devices (hydraulic actuators, load-bearing cables, devices, cables, devices for measuring and processing information) does not ensure the reliability of the protection of the bridge. Scattered around the wind energy is not used to protect structures from lateral wind.

The objective of the invention is to simplify the automation device control deformation of the bridge from the side of the wind through the use of wind power and simple mechanical devices and improving the reliability of the bridge from the deformation of the crosswind (blast wave).

The problem is solved due to the fact the CSO control consisting of sails-batteries, wind power, located on the guides with the ability to move thereon, each end of the sail-battery wind power cable associated with meranoplini lever located on the fixed bearing, the other end neravnovesnogo lever connected managing cable respectively with adjacent construction of the bridge, and the sails, batteries, wind energy is either located in the middle part of the bridge or on the bridge in several places, or on both sides on the Bank not less than four points.

Introduction guarding the bridge from side winds, consisting of sails-akkumulatorov side wind, accumulated wind energy and its impact on the bridge to keep it in steady state, increases reliability, increases strength and reduces vibrations of the bridge and automatically controls the loads on the bridge, greatly reducing their due to wind power.

The protection device bridge from the effects of side winds is illustrated by drawings, where

Fig. 1 shows a view of the bridge from the side with the location of sails-battery wind energy in the middle part of the bridge of Fig. 2 - the same, in plan, Fig. 3 is a view of the bridge from the side with rospoligrafsnabzhenie sails-battery wind energy outside of the bridge, on the shore of Fig. 6 is the same as in the plan.

The device consists of a suspension bridge 1 truss 2, made on the supports 3. It is equipped with automatic control device, consisting of sails-battery wind energy 4, located in the middle part of the bridge 1. Sails-batteries, wind energy 4 is installed on the bridge 1 on the guides 5 and can be moved by him, tugging the rope 6. Each end of the sail-battery wind energy 4 are connected by a cable 6 with meranoplini lever 7 located on the support 8. The other end neravnovesnogo lever 7 managing cable 9 is connected to the axle 1 in span bridge construction (see Fig. 1).

The protection device bridge from side winds can be performed and thus, when the sails, batteries, wind energy 4 are located on the bridge in at least two places on the guides 5 with the ability to move them across the axis of the bridge (see Fig. 2) or outside of the axle 1 and is fixed on the shore (see Fig.3).

The device operates as follows.

In the absence of wind protection device of the bridge from the side the wind is at rest. In the presence of wind from the side, the action of the sail-battery 4 wind energy from wind nplaim lever 7. The other end neravnovesnogo lever 7 is drawn and pulls the control cable 9 connected with the axle 1 and thus acts on the axle to remove the lateral loads from wind (see Fig. 1).

The device operates similarly, if you run it as a sail-battery wind energy 4 located at several points of the bridge 1. Sails-batteries, wind energy 4 are located on the guides 5 with the ability to move under the action of wind, while pulling the cable 6, is associated with meranoplini lever 7. The other end neravnovesnogo lever 7 is drawn and pulls managing cable 9 span bridge construction 1 in the initial position (see Fig. 2).

The device works similarly in the case of the arrangement of sails-battery wind energy 4 out of the bridge on the shore, for example, in four symmetric points (see Fig. 3).

The use of the device protecting the bridge from side winds allows you to automatically control the deformation of the bridge from side winds or gusts, captures wind energy and directs it to "good", using a simple mechanical device that increases the reliability of the bridge from the action of wind.

The protection device of the bridge from the side ve the standing of the sails of batteries, wind energy, located on the guides with the ability to move thereon, each end of the sail-battery wind power cable associated with meranoplini lever located on the fixed bearing and the other end neravnovesnogo lever connected managing cable respectively with adjacent construction of the bridge, and the sails, batteries, wind energy is either located in the middle part of the bridge or on the bridge in several places, either on both sides of the bridge on the Bank not less than four points.

 

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