Design method of movable wind barriers synchronized with vehicles on long-span bridges

Abstract

A novel movable wind barrier design method applied on long-span bridges synchronously with vehicles, including wind barrier main body, slide rail and power device. The power device includes a moving wind barrier following system and a power system. The follow-up system utilizes video recognition technology and is implemented by installing a camera on the supporting structure of the mobile wind barrier; the position of the mobile wind barrier and the camera are located on both sides of the bridge, and the recognition and positioning of the vehicle is realized by capturing the wheels of the vehicle. The power system uses an electric motor as an energy source, and realizes the movement of the entire mobile wind barrier by driving the rollers of the power device; the wind barrier part of the mobile wind barrier is attached with a solar panel, which supplies power to the electric motor, and when the mobile wind barrier is not working The electric energy can be stored at any time; the power system can control its own power output by following the relative position information of the vehicle fed back by the system, and adjust the movement speed to realize synchronous movement with the protected vehicle.

Description

technical field [0001] The invention belongs to the technical field of traffic safety design, and in particular relates to a movable wind barrier applied to a long-span bridge that can move synchronously with vehicles traveling on the bridge. Background technique [0002] Due to my country's vast territory and changeable climate, traffic safety is affected by various weather factors. Among them, there are generally strong cross winds in sections such as mountain passes, passes, high roadbed bends, and long-span bridges. The wind in the natural environment is an important external factor that affects the stability and safety of vehicles such as vehicles. For vehicles, the main hazard is the effect of crosswinds. In coastal cities where typhoons are frequent, there are reports of vehicles overturning caused by crosswinds every year, and this phenomenon is particularly serious on bridges. Crosswind has a great influence on the stability of the vehicle, because when the wind ...

AI Technical Summary

Problems solved by technology

Traditional bridge wind barriers are divided into two types: continuous wind barriers and partial wind barriers. Although continuous wind barriers are more effective, they are less cost-effective and tend to be conservative. Although local wind barriers can ensure driving safety in most cases, they are not It is difficult to guarantee its function when there is an occasional crosswind, and the reliability is low

The main problem of traditional wind barriers is that the installation, construction and post-maintenance are more complicated. At the same time, the most serious problem is that the installation of wind barriers will add a large lateral force load to bridges (especially suspension bridges), which makes the failure probability of bridges Greatly improved, facing greater security and economic risks

[0005] In previous studies, few movable local wind barrier safety facilities were involved

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