WAVE TRANSMISSION THROUGH CURTAINWALL PILE BREAKWATER (CPB)

The harbor basin should provide calm water so the process of ship loadingunloading is easy and safe. One method to be minimize wave disturbances is by constructing breakwater to protect the habor basin. There are many types of breakwaters, but this research uses “curtainwall-pile breakwater” (CPB) to protect the harbor basin. The objective of research is to examine wave transmission through CPB (curtainwall-pile breakwater). The transmission wave can be symbolized by the wave transmission coefficient. The wave transmission through the curtainwall-pile breakwater (CPB) was experimentally studied with a physical model. The parameters of wave transmission was determined by utilizing the non-dimensional analysis and most important parameters were the porosity of CPB (a/A) and wave steepness (H/L). The experiment utilized a wave flume which had 15 meter length, 0.30 meter wide, and 0.45 meter height. The wave flume was equipped with wave maker (wave generator), wave absorbers, and wave probes. The results study of curtain wall-pile breakwater (CPB) show that the increasing porosity of CPB would cause greater the wave transmission, and increasing wave steepness (H/L) would cause smaller wave transmission. The relation of wave transmission coefficient function porosity of CPB (a/A) and wave steepness (H/L) is shown by this equation: ????????=1.0550( ???? ???? ) 0.439 - 16.367( ???? ???? ) 1.296 + 0.196