A New p-y Curve for Laterally Loaded Large-Diameter Monopiles in Soft Clays

被引：7

作者：

Wang, Mingyuan ^{[1
]}

Wang, Miao ^{[2
]}

Cheng, Xinglei ^{[2
]}

Lu, Qun ^{[2
]}

Lu, Jiaqing ^{[2
]}

机构：

[1] Powerchina Huadong Engn Corp Ltd, Hangzhou 310014, Peoples R China

[2] Tianjin Chengjian Univ, Key Lab Soft Soil Engn Character & Engn Environm, Tianjin 300384, Peoples R China

来源：

SUSTAINABILITY | 2022年 / 14卷 / 22期

基金：

中国国家自然科学基金;

关键词：

p-y curve; lateral loading; large-diameter monopile; BNWF method; soft clays; PILE; FOUNDATIONS; MODEL;

D O I：

10.3390/su142215102

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

In harsh offshore environmental conditions, the monopile foundations supporting offshore wind turbines must be designed for lateral loads such as winds, waves, and currents. The Beam on Nonlinear Winkler Foundation (BNWF) method has been widely used because of its clear concept and lower calculation cost. The selection of a reasonable p-y curve is critical to the calculation accuracy of this method. This paper clarified the defects of widely used API p-y curves for soft clays and then proposed a new p-y curve with better versatility and applicability. The suitability of the proposed p-y curve was validated by comparing it with the calculation results from the three-dimensional finite element method (3D FEM). Compared with the API p-y curve, the proposed p-y curve can better predict the lateral behavior of large-diameter piles in soft clays, such as the load-displacement curve of the pile head, lateral deflection profile, and bending moment profile. The research findings can provide guidance for the design of monopile foundations supporting offshore wind turbines in soft clays.

引用

页数：16

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