Compatible Anchors of Silt Protector in Shallow Sea with Mud Seafloor Material

J. Ocean Eng. Technol. 2003;17(3):7-12.

KWEON GI-CHUL;HONG NAM-SEEG;SONG Mu-HYO;CHOI CHANG-GYU;

School of Civil and Urban Engineering, Dongeui University;School of Civil and Ocean Engineering, Danga University;School of Civil and Urban Engineering, Dongeui University;School of Civil and Urban Engineering, Dongeui University;

천해역 점성토 지반에 적합한 오탁방지막 기초 앵커

권기철;홍남식;송무효;최창규;

동의대학교 토목도시공학부;동아대학교 토목해양공학부;동의대학교 토목도시공학부;동의대학교 토목도시공학부;

핵심용어: Anchor 앵커, Holding Capacity 지지력, Silt Protector 오탁방지막, Suction Pile Suction말뚝, Mud 점성토

Abstract

The Navy has tested the holding capacity of many kinds of anchors in order to propose the design chart for the holding capacity of drag-embedment anchors. The design chart is only applicable up to the cable bottom angle 60 when load is raised to the ultimate weight. However, the anchor experiences a significant uplift force when the angle is above 60 in shallow seas. In this paper, the procedure for the estimation of the holding capacity of anchors in mud is proposed. Drag-embedment anchors do not function well when there is a significant uplift component of load in soft seafloor materials, such as mud. Under these loading and seafloor conditions, gravity anchors seems to be more efficient. However, they are too heavy for their holding capacity. Therefore, suction pile (hollow concrete block) is more beneficial to the foundntion of silt protector in shallow sea with mud seafloor materials.