Study on Seismic Performance of Archaized Steel Tower

Abstract

Combined with the design of Tiantang Site Protection Exhibition Project in Luoyang, China, the seismic performance of an archaized steel tower is studied in this paper. Firstly, a finite element model of whole structure is built accurately with ANSYS software. Then the dynamic behaviors of steel tower are analyzed. The natural vibration frequency and mode shape are obtained. Compared with dynamic test at site, the theoretical values are verified and it is reasonable about adopted loads and boundary conditions in the finite element model. After that, the seismic behaviors of steel tower are calculated and analyzed under seismic intensity 7 degree with methods of spectrum analysis and time-history analysis. The distribution characteristics of displacements and stresses are revealed. The results prove that the seismic performance of the given archaized steel tower can meet the code requirements. It is believed that the results in this paper would give some reference for the design of similar steel tower structures.

Finite Analysis and Research of Lift-sliding Stereo Garage Structure

“…After modal analysis, it needs to expand modal. In the processing of spectrum analysis, the parameter settings are as follows: "Type of response spectr" is set as "Seismic accel", "Excitation direction" is set as horizontal direction, "DMPRAT" and "Damping ratio for this curve" are 0.35 [13,14] . After spectrum analysis, it can obtain response spectrum analysis results of single point of steel structure under the action of seismic load with the post-processing module, the results are shown as figure 10 and figure 11.…”