WAVE REFLECTION AND TRANSMISION ANALYSIS OF PILE BREAKWATER
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permeable breakwater, pile breakwater, reflection, transmission
Abstract
The muddy beach vulnerable to wave damage, coastal protection is needed by using permeable breakwaters type. Permeable breakwaters are being developed, namely with Pile Breakwater. The material used for the protoype in laboratory is rounded insulated bamboo, which is round bamboo from Pringgodani garden with a diameter of 1 cm, height of 20 cm with a multiblock wooden bulkhead with thick of 2 cm. Reflection and transmission analysis on the results of 2D physical modelling of the breakwater is needed to achieve optimization in its use. Breakwater is effective in scenarios that have smaller Kt values and larger Kr values. In this study the test was carried out with water level at Mean Sea Level (MSL) (44 cm) and High Water Level (HWL) (50 cm) with 2 spatial scenarios between 1 cm and 2 cm. Then the calculation results of Kt and Kr are compared with nondimensional wave steepness variables (Hi/gT2 ) and wave slope (Hi/L)). From this laboratory study, it is shown that has lower values at MSL and has higher values at MSL. This fact shows that the permeable breakwater with bamboo more effective at low water level than at high water level.
References
Ajiwibowo, H. 2011. 2-D physical modeling to measure the effectiveness of perforated skirt breakwater for short-period waves. ITB J. Eng. Sci., 42(1): 57-78. http://doi.org/10.5614%2Fitbj.eng.sci.2011.43.1.5
Herbich, J.B. & B. Douglas. 1988. Wave transmission through a double-row pile breakwater. Coastal Engineering Proceedings. 2229-2241 pp. https://doi.org/10.9753/icce.v21.165
Koftis, T., P. Prinos, & M. Aftias. 2012. Experimental study of a multiple - row pile breakwater. Researchgate, 1-9. https://www.researchgate.net/publication/257251761
Putra, A.O., H.D. Armono, & Sujantoko. 2013. Pengaruh elevasi muka air laut pada koefisien transmisi dan refleksi composite breakwater. J. Teknik Pomits, 2(1): 2301-9271. http://doi.org/10.12962/j23373539.v2i1.3106
Scarlatos, P. 2011. Effects of permeable breakwater on shallow wave propagation. Oceans '86, 18(1): 392-397. https://doi.org/10.1109/OCEANS.1986.1160434
Somervell, L.T., S. Thampi, & A. Shashikala. 2014. Wave reflection from corrugated perforated beach and vertical upright breakwater. International J. of Engineering Research and Technology, 3(12): 26-29. https://www.ijert.org/wave-reflection-from-corrugated-perforated-beach-and-vertical-upright-breakwater
Sulaiman, D.M. 2017. Proposal kegiatan model pemecah gelombang tiang pancang Bali: Balai Pantai. Unpublished.
Sulaiman, D.M. & A.A. Larasari. 2017. Rehabilitasi pantai dengan pemecah gelombang tiang pancang dari bambu bulat bersekat. Prosiding Simposium II–UNIID 2017. 443-449 pp. http://conference.unsri.ac.id/index.php/uniid/article/view/637/249
Thaha, M., S. Pongmanda, & M. Reza. 2015. Studi pengaruh kedalaman puncak pemecah gelombang tenggelam tipe blok beton berpori terhadap transmisi gelombang. J. Teknik Sipil UNHAS. http://repository.unhas.ac.id/handle/123456789/13000
Umar. 2011. Kajian pengaruh gelombang terhadap kerusakan pantai matang danau Kabupaten Sambas. J. Teknik Sipil UNTAN, 11(1): 93-102. http://doi.org/10.26418/jtsft.v11i1.1068
Wurjanto, A., H. Ajiwibowo, & R. Zamzami. 2010. Pemodelan fisik 2-D untuk mengukur tingkat efektivi-tas perforated skirt breakwater pada kategori gelombang panjang. J. Teknik Sipil, 17(03): 211-226. http://doi.org/10.5614%2Fjts.2010.17.3.7
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