Wind-resistant design method for long-span overhead cable belt material transportation system

Abstract

The present application relates to the field of material conveying, and specifically discloses a wind resistance design method for a large-span overhead steel cable belt material conveying system; comprising the following steps: step 1, preliminary calculation, calculating the basic wind pressure, the wind load standard value of the belt and the steel cable; step 2, establishing a mechanical model and performing static calculation and modal analysis to obtain the displacement value of the belt and the steel cable, determine the wind resistance design position, and calculate the fundamental frequency of the structure at the position; step 3, performing wind tunnel experiment and CFD numerical simulation on the conveying system after all the steel cables and the belt are matched, re-determining the wind vibration coefficient and the shape coefficient of the belt and the steel cable and calculating the vortex shedding frequency at the wind resistance design position; step 4, calculating the frequency ratio; step 5, selecting a damper according to the frequency ratio and installing the damper at the bottom of the hanger or on the steel wire rope at the wind resistance design position; the wind resistance design method for the large-span overhead steel cable belt material conveying system in the present application can reduce the vibration of the system and improve the safety.

Images