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Bambang Surendro
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Civil Engineering, Building, Construction & Architecture

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Transmisi dan Refleksi Gelombang pada Pemecah Gelombang Ambang Rendah Ganda Tumpukan Batu Surendro, Bambang; Yuwono, Nur; Darsono, Suseno
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 20, Nomor 2, DESEMBER 2014
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (718.552 KB) | DOI: 10.14710/mkts.v20i2.9259

Abstract

Protection of beaches for tourism development, protection planning in addition to aiming to keep the damage to the beach will also need to think about the authenticity and beauty of the beach area . Building protective beaches that can meet these objectives include low threshold breakwaters (submerged breakwater). Some of the excessuse of low threshold breakwaters are: 1. No disturbing beauty of the beach; 2. because construction is under water, then when the wave comes partially absorbed wave energy, will be partially reflected, and the rest will be transmitted; 3. can become breeding grounds for fish, because the construction is hollow. The disadvantages are: 1. requires a large stone with a large number, 2. in the assembly requires a supporting infrastructure such as transport  equipment, long bridge, lifting equipment etc, thus requiring a lot of cost. Based on that research conducted by the title of the transmission and reflection of waves on double sumerged breakwater. Methodology of research, conducted with with physical models, and then continued with theoretical studies in order to obtain the equation for calculating the coefficient of wave  transmission and wave reflection coefficient. The results showed that to calculate the magnitude of the coefficient of wave transmission and wave reflection coefficient can be approximated by the following equation: , .
Transmisi Gelombang pada Pemecah Gelombang Ambang Rendah Ganda Surendro, Bambang; Yuwono, Nur; Darsono, Suseno
MEDIA KOMUNIKASI TEKNIK SIPIL Volume 20, Nomor 1, JULI 2014
Publisher : Department of Civil Engineering, Diponegoro University

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (917.764 KB) | DOI: 10.14710/mkts.v20i1.9242

Abstract

Coastal protection efforts can be done in various ways, among others, by making alow threshold breakwaters (sumerged breakwater). Every building in addition there is certainly no shortage of excess. With several weaknesses breakwater low threshold, then conducted research with the title “Wave Transmission At Low Threshold Dual-breaking waves". The study was conducted in the Hydraulic laboratory of the Faculty of Engineering, Tidar Magelang University, with variations of the model as follows: Model I : single low threshold breakwater piles of stones (PGARTTB) with peak width (B)=120 cm Model II : a low threshold double breakwater piles of stones (PGARGTB) formed by reducing material PGARTTB protective stone that is in the middle as much as 8.89%, 20%, 33.33%, and 46.67%. The results showed that: a) Reduction of material protection on the stone breakwater lowthreshold single pile of stones (PGARTTB) affect the magnitude of the wave transmission, b) reduced protective stone will increase the value of the wave transmission coefficient c) for each reduction of 1% a protective stone, waves of up 0.2788% transmission, d) the increase in transmission waves are caused by the reduced friction between the base and peak wave breakwaters low threshold.
Co-Authors Nur Yuwono Suseno Darsono