High rod lights refer to high -rod lighting facilities such as urban roads and highways such as urban roads and highways, squares, stadiums, airports, ports, etc. The high rod light is a towering structure, so the load design of the high rod light meets the load design requirements of the towering structure. The load on the towering structure can be divided into the following three categories.

(1) Permanent load: Structural self -weight, fixed equipment weight, material weight, soil heavy, soil pressure, line tension, etc.

(2) Variable load: wind load, ice load, common seismic effects, snow load, installation and maintenance load, living load on the floor or platform of the tower, temperature change, foundation sinking, etc.

(3) Occasionally load: Wire breaks, cable breaks, impact, explosion, rare earthquake effects, etc. Snow loaded the snow on the building roof or other structures. Snow load value s is determined by the snow -capped weight of the ground area, that is, the basics of the basics of the house area of the snow distribution coefficient of the house area:

S = μRSO [3]

Basic snow pressure generally refers to specifications or local meteorological records. The specifications have given basically snow pressure in some large and medium -sized cities in China for 10 years, 50 years, and 100 years. Generally, the basic snow pressure is taken for 50 years, temporary buildings, warehousing, and unimportant structures can be taken in 10 years or 30 years. The main factor affecting the size of the structure of the structure is the local area of snow and the snow distribution on the structural parts. They are directly related to the value and structural safety of the snow load. Wrap ice loads The freezing weight surrounded by tower rods, cables, and wire surfaces. In winter or early spring, under specific climate conditions, it is formed by frozen, frozen hair, frozen rain, and temperature below 0 ℃ in some areas. The value can be determined according to the thickness of the ice and ice capacity.

        Ice -wrapped load is often an important load for structures such as transmission tower and lines. Because the ice wrapping increases the cross section of the rods and cables, or the gap between the structure of the structure, it not only increases the weight of the structure or component, but also increases the wind load due to the increase in the windshield of the structure. Make the structural force more unfavorable. Earthquake loads are very serious for damage to the towering structure, and the damage is often hidden with potential dangers.