Free-Fall Penetration Behaviors of A New Dynamically Installed Plate Anchor in Marine Clay  

作　　者：LAI Ying HUANG Yun-han CHEN Chuan ZHU Bin 

机构地区：[1]MOE Key Laboratory of Soft Soils and Geoenvironmental Engineering,College of Civil Engineering and Architecture,Zhejiang University,Hangzhou 310058,China [2]College of Civil and Harbour Engineering,Jiangsu Ocean University,Lianyungang 222005,China

出　　处：《China Ocean Engineering》2020年第6期795-805,共11页中国海洋工程（英文版）

基　　金：financially supported by the National Natural Science Foundation of China (Grant Nos. 51809231 and 51988101)。

摘　　要：A new dynamically installed plate anchor, the Flying Wing Anchor~?, has been developed as a sustainable anchor concept for deep-water offshore wind turbines. The anchor is firstly installed by free-fall penetration and then followed by drag embedment. If the anchor is subjected to environmental loads, it dives deeper to mobilize a higher capacity. This study presents a series of free-fall penetration tests with model anchors in different weights to assess the anchor behavior during the free-fall penetration performance in one-layer soil with a constant shear strength profile. Anchor velocities and embedment depths were measured by a magnetometer. An energy-based model and a force-based model were calibrated against the test results of model anchors with different weights. Based on the calibrated force-based model, a series of design charts were developed to estimate the embedment depth of anchors in different sizes and with different impact velocities in various marine clays. The framework to plot design charts presented herein can be potentially applied to other dynamically installed anchors to predict embedment depth in engineering practice.

关 键 词：dynamic anchor dynamic installation plate anchor scale effect design chart 

分 类 号：P75[天文地球—海洋科学] TU475[建筑科学—结构工程]