ABSTRACT
Aiming at the safety problem of derrick steel structure under wind load, the wind vibration response analysis of derrick steel structure is carried out. The linear filtering method is used to simulate the wind load on the derrick steel structure. The algorithm is simple and the simulation results are accurate. The finite element model of the ZJ70 derrick steel structure is established, and the dynamic response analysis of the derrick steel structure under wind load under different working conditions is carried out. The results show that: First, compared with the equivalent static wind load analysis, the response peak of the derrick steel structure under the wind vibration time domain analysis is much larger than that under the equivalent static load analysis. Second, under the condition of preservation equipment, the stress response of the middle-inclined bar member of the ZJ70 derrick steel structure exceeds the allowable value of the specification, and the strength of the ZJ70 derrick steel structure under this condition does not meet the requirements. Third, the wind level of wind load has a great influence on the safety of the derrick steel structure, and the middle and low parts of the ZJ70 derrick steel structure are sensitive to the change in wind load strength. Fourth, the overall damage and local damage of the derrick steel structure have a great influence on its wind resistance safety, and the local damage is not easy to be directly found by observation.
