Investigation Of The Safety Of Seawalls Against
Scouring
Author(s)
S. A. Lashteh Neshaei & F. Ghanbarpour
Abstract
Scouring phenomena is one of the most important issues in Coastal Engineering.
Constructing protective structures such as seawalls on the shoreline can cause
scouring and the estimation of scouring depth in front of such structures is one of
the important problems in the design of their foundations. In this paper, based on
experimental data, the beach level changes and potential of scouring at different
locations in front of the constructed seawalls and in the case of a natural coast
without protective structures are estimated and compared, which can be useful in
coastal engineering studies and design and management of coastal defense
projects. The results predicted by the model are compared with the experimental
data indicating the good accuracy of the proposed model. The results obtained
from the present work clearly indicate that the construction of seawalls at the
shoreline results in a reduction of the associated seaward sediment transport and
bed profile evolution but increases the local scouring depth which may cause
damage to such structures. Incorporating the nonlinear effect of wave and wave
current interaction into the proposed model has resulted in an improvement in the
prediction of sediment transport, bed level changes and scouring depth in front of
seawalls. This, in turn, results in a more effective design of seawalls to increase
their safety against scouring.
Keywords: scouring depth, seawall, sediment transport, undertow, nonlinear
wave, wave-current interaction, safety, beach profile evolution.
Keywords
scouring depth, seawall, sediment transport, undertow, nonlinear
wave, wave-current interaction, safety, beach profile evolution
Related Book
Other papers in this volume
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