Abstract
The main objective of this study is to investigate the influence of uncertainties associated with the material properties on the seismic performance of pile-supported wharves. For this purpose a two-dimensional finite difference model, representing typical pile-supported wharf structures from western United States has been constructed using software FLAC2D. Incremental dynamic analysis has been applied to evaluate the response of wharf structure under different levels of seismic loading. The uncertainties at both structural and geotechnical parameters have been investigated using a tornado diagram and a Wrst-Order Second-Moment (FOSM) analysis. It has been found that the uncertainties at the dead load of structure, friction angle of rock fill and the porosity of rock fill contribute most to the variability of the displacement ductility factor of the pile- supported wharf structures. Based on the results, design considerations have been provided.
Highlights
Seaport transportation systems play a significant role in the world’s economy
Berthing Facilities are one of the main components of seaport transportation networks and wharf structures are the main component of berthing facilities
Wharf structures play a crucial role in the transportation system in terms of evacuation of people before and after natural or man-maid disasters like earthquakes and explosions, especially when other transportation systems fail to deliver
Summary
Seaport transportation systems play a significant role in the world’s economy. They are important components of regional and local transportation network, since they provide a financially beneficial method for transporting a large amount of cargoes into and out of a region via water (Shinozuka, 2009). Berthing Facilities are one of the main components of seaport transportation networks and wharf structures are the main component of berthing facilities. Wharf structures play a crucial role in the transportation system in terms of evacuation of people before and after natural or man-maid disasters like earthquakes and explosions, especially when other transportation systems (like as land and air) fail to deliver. Past experience have demonstrated that seaports facilities are often vulnerable to severe damage during in the case of a strong earthquake and under moderate earthquakes (Werner, 1998). A number of pile-supported wharves have suffered extensive earthquake induced damage due to poor seismic design
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