Wave characteristics and spectrum for Pingtan Strait Bridge location

摘要

In order to obtain the wave forces on the substructure and superstructure of the sea-crossing bridge, this paper develops a systematic series of wave spectra covering a variety of spectral shapes observed in the bridge site area of Pingtan Strait Bridge. Error identification of wave data and data reconstruction using the orthogonal matching pursuit of compressive sensing algorithm are conducted to obtain the stable and accurate water level data firstly. The characteristic of the wave is then evaluated, and the joint distribution of significant wave height and average wave period is investigated using copula models. A family of wave spectra is proposed to represent a set of 7084 spectra measured at the 6# platform of the Pingtan Strait bridge site. Analytical results show that the proposed wave spectra family (Pingtan spectra) can represent the realistic wave spectra, and the Pingtan spectra characteristic can also reflect the diversity and randomness of the realistic wave spectrum. Application of the wave spectra suggests using the proposed spectra to calculate the wave force on the structure of the Pingtan Strait Bridge location.