碩士 / 國立交通大學 / 土木工程系 / 87 / A mildly sloping seawall provides with better functions of both recreational actions and promenade and reduces the wave reflection, runup and overtopping. The mildly sloping seawalls have been constructed in Japan for last two decades. In this paper, we designed a new kind of plain armouring block for plain-type and step-type mildly sloping seawalls and find its hydrodynamics, such as wave reflection, runup and overtopping by physical model tests. We developed measuring techniques for wave runup and overtopping. The hydrodynamics was related to the wave steepness, surf parameter, and relative freeboard and formulated by suitable regressed formula.
The experimental results showed that step-type seawalls reduce more wave reflection, runup and overtopping than plain-type seawall and that the milder seawalls reduce more than steeper ones, especially for plain-type seawalls. The blocks on plain-type seawalls are more stable than those on step-type ones.
| Identifer | oai:union.ndltd.org:TW/087NCTU0015069 |
| Date | January 1999 |
| Creators | Ching-Chung Kao, 高慶忠 |
| Contributors | Hsien-Kuo Chang, 張憲國 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 110 |
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