Traffic signal lamp is an important part of traffic engineering, which provides powerful equipment support for safe travel of road traffic. However, the traffic signal function needs to be continuously played during the installation process, and the mechanical strength, stiffness and stability when receiving load shall be fully considered in the structural planning. Next, I will introduce the method of correctly installing traffic signal lamp poles and the commonly used signal lamp decoration methods for you to understand.
Method of correctly installing traffic signal lamp pole
There are two common accounting methods for signal lamp poles: one is to simplify the signal lamp structure into a pole system by applying the principles of structural mechanics and material mechanics, and select the limit condition planning method for checking calculation.
The other is to use the approximate accounting method of the finite element method for checking. Although the finite element method is more accurate by using the accounting machine, it was widely used in practice at that time because the limit state method can give accurate conclusions and the accounting method is simple and easy to understand.
The upper structure of the signal pole is generally steel structure, and the limit condition planning method based on the probability theory is selected. The planning is based on the limit condition of bearing capacity and normal use. The lower foundation is concrete foundation, and the theoretical planning of the foundation engineering is selected.
The common traffic signal pole devices in traffic engineering are as follows
1. Column type
Pillar type signal lamp poles are often used to install auxiliary signal lamps and pedestrian signal lamps. Auxiliary signal lamps are often installed on the left and right sides of the parking lane.
2. Cantilever type
Cantilevered signal light pole is composed of vertical pole and cross arm. The advantage of this device is to use the device and control of signal equipment at multi-phase intersections, which reduces the difficulty of laying engineering electricity. Especially, it is easier to plan multiple signal control schemes at complex traffic intersections.
3. Double cantilever type
The double cantilever signal light pole is composed of a vertical pole and two cross arms. It is often used for the main and auxiliary lanes, main and auxiliary roads or T-shaped intersections. The two cross arms can be horizontally symmetrical and can be used for multiple purposes.
4. Gantry type
The gantry type signal light pole is often used in the situation where the intersection is wide and multiple signal facilities are required to be installed at the same time. It is often used at tunnel entrance and urban entrance.
Post time: Aug-12-2022
