关键词: 桥梁工程, 人行悬索桥, 人工地震波, 反应谱法

Abstract: Taking Chengkou pedestrian suspension bridge as the research object, the response spectrum analysis was carried out by using ABAQUS. Three groups of artificial seismic waves were simulated by using trigonometric series method, and the artificial seismic waves which had the greatest impact on the structure were selected for time history analysis. The results were compared with the results of response spectrum analysis. The results show that: the most disadvantageous position of main cable and main beam occurs at the east pylon and middle span respectively; the pedestrian suspension bridge structure is soft and in the long period range in the response spectrum; the seismic excitation response is small, but the response of self-weight load is large, so the self-weight load must be considered when the response spectrum results are output; the results of the time history analysis are generally larger than those of response spectrum analysis, and the peak response value of internal force of pedestrian suspension bridge is in good agreement, while the peak displacement response deviation is mostly between 10% and 30%, and the coincidence degree basically meets the requirements of seismic code.

Key words: bridge engineering, pedestrian suspension bridge, artificial seismic wave, response spectrum method