1, design basic wind speed should be adopted in the local flat open ground, lOm high from the ground, for the 50 year return period lOmin average maximum wind speed value, Solar Traffic Sign and shall not be less than 22m/s.
2, the traffic sign structure should be designed according to the state of bearing capacity limit state and serviceability limit, and should also meet the requirements of structure and process.
3, the traffic sign structure importance coefficient can be divided into two levels:
(1) located in the highway, a road seven, the cantilever gantry sign, structure importance coefficient
(2) traffic signs in other types of highway, a road on the traffic signs and in other grade highway, structure importance coefficient Y. =0.9.
4, the structure of traffic sign design load calculation and combination, the limit state design method, the foundation shall accord with the design of highway bridges and led traffic signs culverts "standard" (JTC D60), "specifications for design of ground and foundation of highway bridges and culverts" (JTJ 024), "code for design of steel structures" (JB 50017) and "road traffic signs and the marking" (JB 5768) and other provisions.
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