케이슨 방파제 바닥판 단부 지지력 저감방안에 대한 고찰 KCI

Title
케이슨 방파제 바닥판 단부 지지력 저감방안에 대한 고찰
Alternative Title
Consideration on Ways to Reduce a Edge Pressure at Bottom Plate of Caisson Breakwaters
Author(s)
Park, Woo Sun; Lee, Byeong Wook
KIOST Author(s)
Park, Woo Sun(박우선)
Publication Year
2020-10
Abstract
In this study, ways to reduce the edge pressure at the bottom plate of the caisson breakwater were considered. The water depth, freeboard, design wave height and period, and the location of the center of gravity on the super-structure of the breakwater were selected as key design variables that influence the edge pressure, and analyzed how the edge pressure changes according to the change of this key variables. The pressure distribution formulae suggested in the design standard was applied for the calculation of design wave forces. Based on the wave forces, the required effective self-weight of the super-structure and the minimum width of the caisson were determined to have a safety factor of 1.2 against sliding and overturning. From the results, it was found that the edge pressure rapidly increased as the water depth increased, and could exceed the allowable bearing capacity when it reached a certain water depth which is 20 m within the analysis conditions. It was also confirmed that the edge pressure gradually increased linearly as the freeboard increased, but decreased with the increase of the wave height and period. This edge pressure could be significantly reduced up to more than 20% by moving the center of gravity of the super-structure to the seaside, which is 5% of the caisson width. Based on the analysis results and the recently conducted research results, a method was proposed to reduce the edge pressure that can be used in the design.
ISSN
1976-8192
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/37574
DOI
10.9765/kscoe.2020.32.5.331
Bibliographic Citation
한국해안·해양공학회논문집, v.32, no.5, pp.331 - 339, 2020
Publisher
한국해안,해양공학회
Keywords
harbor; caisson breakwater; edge pressure; allowable bearing capacity; Goda’s pressure distribution formulae
Type
Article
Language
Korean
Publisher
한국해안,해양공학회
Related Researcher
Research Interests

Development of harbor structures,Analysis of harbor structures,Design of harbor structures,항만구조물개발,항만구조물해석,항만구조물설계

Files in This Item:
There are no files associated with this item.

qrcode

Items in ScienceWatch@KIOST are protected by copyright, with all rights reserved, unless otherwise indicated.

Browse