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原文传递 Influence of Macroroughness on Tsunami Loading of Coastal Structures

题名：	Influence of Macroroughness on Tsunami Loading of Coastal Structures
其他题名：	ASCE.(2011)."Minimum design loads for buildings and other structures."ASCE 7-10,Reston,VA.
正文语种：	英文
作者：	Seth Thomas
关键词：	Tsunamis;Macroroughness;Coastal structures;Hydraulic models;Tsunami design;Tsunami forces
摘要：	This paper presents experimental laboratory data to show how macroroughness affects tsunami flow as it travels across the inundation zone. The effects of macroroughness have been observed in several tsunamis, most recently in the Tohoku tsunami in March 2011. The hydraulic experiments presented here were conducted at Oregon State University's Tsunami Wave Basin, which is equipped with a piston-style wavemaker capable of producing long-period waves that best simulate the effects of tsunamis on shore (i.e., long inundation lengths without large offshore wave heights). The basin was set up with a multitiered bathymetry representing a flat beach similar to those seen in the Pacific Northwest of the United States. The experiment was conducted by measuring the run-ups and forces on an instrumented specimen being fronted with macroroughness elements. These elements were systematically positioned around the beach section of the basin, creating multiple configurations to evaluate the effects on the specimen. To best quantify each unique layout of macroroughness, a new measure, the wake clearance angle (b), was developed. This measure was then used to show the relative effects of the macroroughness, which was seen to increase the loads on the specimen by more than 100％ or to decrease the loads on the specimen by as much as 75％.
出版年：	2015
论文唯一标识：	P-108Y2015V141N01005
英文栏目名称：	Technical Papers
doi：	10.1061/(ASCE)WW.1943-5460.0000268
期刊名称：	Journal of Waterway, Port, Coastal, and Ocean Engineering
拼音刊名(出版物代码)：	P-108
卷：	141
期：	01
页码：	25-38