Vol. 12, No. 1, pp. 1-16 (2016)
WIND-INDUCED RESPONSE ON LARGE-SPAN STRUCTURES BASED ON POD-PSEUDO-EXCITATION METHOD
Zhongwei Zhao 2, Zhihua Chen 1,2,3, Xiaodun Wang 2, *, HaoXu 2 and Hongbo Liu 2
1 State Key Laboratory of Hydraulic Engineering Simulation and Safety,
Tianjin University, Tianjin 300072, China
2 School of Civil Engineering, Tianjin University, Tianjin 300072, China;
3 Key Laboratory of Coast Civil Structure and Safety of Ministry of Education, Tianjin University,
Tianjin 300072, China;
*(Corresponding author: E-mail:This email address is being protected from spambots. You need JavaScript enabled to view it.">This email address is being protected from spambots. You need JavaScript enabled to view it. )
Received: 12 January 2014; Revised: 3 June 2015; Accepted: 18 June 2015
DOI:10.18057/IJASC.2016.12.1.1
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ABSTRACT
This paper proposes a new method to analyze wind-induced response in frequency domain for long-span spatial structures. This method is based on proper orthogonal decomposition (POD) and pseudo-excitation methods, which could significantly reduce computational cost. Based on the POD-pseudo-excitation method and the wind pressure coefficient obtained from a wind tunnel test, ANSYS general purpose software package was developed for the analysis of wind-induced response of YUJIAPU Railway Station Building, which is designed in the form of a conch-shaped single-layer lattice shell. The wind vibration coefficient in wind direction of 0° was obtained. Results obtained by frequency- and time-domain methods were compared. The results were consistent with each other, establishing the foundation for further application of these methods in wind-induced analysis. The relationship between wind-induced response and the frequency of wind load was also determined. This paper provides effective guidance on equivalent wind load.
KEYWORDS
POD-pseudo-excitation method, wind vibration coefficient, wind-induced response, harmonic response analysis, conch-shaped single-layer lattice shell
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