Chen, F.M.; Tan, H.M.; Chen, J., and Jiao, Z.B., 2018. Influences of Earthquake Characteristics on Seismic Performance of Anchored Sheet Pile Quay with Barrette Piles. In: Shim, J.-S.; Chun, I., and Lim, H.S. (eds.), Proceedings from the International Coastal Symposium (ICS) 2018 (Busan, Republic of Korea). Journal of Coastal Research, Special Issue No. 85, pp. 701–705. Coconut Creek (Florida), ISSN 0749-0208.
Earthquake waves generated along crustal faults propagate through the bedrock and the local site deposits, impacting on any structure such as coastal structures. Seismic waves acting on the foundation of a sheet pile quay cause an oscillatory motion of the quay structure, and the seismic dynamic effect and soil liquefaction can significantly affect the safety of port structures. This paper reports the dynamic behaviour of a new sheet pile quay structure under seismic loads by using finite element method, and the new anchored sheet pile quay with barrette piles is developed to satisfy the requirements of higher elevation of retained soils and smaller wall deflection in practice. Both EL-Centro wave and Kobe wave are adopted in simulation to analyze the effect of earthquake characteristics on seismic performances of structure. The numerical calculation results show that the barrette piles are still effective to carry lateral earth pressure under the earthquake loads, and the maximum bending moment of structure does not occur when earthquake acceleration reaches the peak value. With the increase of earthquake peak acceleration value, the dynamic responses of structure are all increased at different degrees, and the amplification of barrette pile bending moment is the largest. The amplification coefficients of structure response under the Kobe wave loads are greater than those under the EL-Centro wave with the same PGA value, which indicates besides the peak value of earthquake wave, the responses of structure were also affected by other earthquake characteristics, such as spectrum, wave energy density and wave total energy.