Comfort evaluation and dynamic performance of
suspension footbridge
1.School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan, Hubei 430074, China; 2.Transportation Bureau of Siyang County, Suqian City, Jiangsu Province, Suqian, Jiangsu 223700, China
Abstract： Using block Lanczos method, the vibration characteristic of suspension footbridge was analyzed by finite element program of ANSYS. According to the standard of bases for design of structuresserviceability of buildings and walkways against vibrations (ISO 10137), the pedestrian load was simulated. The lateral and vertical bridge accelerations caused by single person and crowd loads were analyzed, respectively. The comfort of pedestrian bridge was analyzed by comprehensive comfort evaluation method. The results show that the comfort performance of suspension footbridge structure meets the requirements. Compared with common suspension bridge, the new suspension footbridge with upper main cables, lower bridge deck cables and suspenders not only meets the requirements of comfort and serviceability, but also reduces the mass and the economic costs.
2014, Vol. 35 
