Bearing Capacity Analysis and Mechanism Study of Shared Caisson Under Multidirectional Loading

Abstract

Shared anchor foundations anchor multiple floating wind turbines, experiencing loads from various directions. Changes in wind and wave directions or potential anchor chain failures will alter the loading direction on the shared foundation, thereby affecting its normal operation. This study investigates the bearing capacity of the shared caisson using an advanced model and numerical methods under multidirectional loading. Additionally, the research explores soil response to elucidate bearing capacity mechanisms. The study thoroughly examines factors like angle between loads, sand density, and previous load magnitude on the shared caisson’s bearing capacity. The results indicate that subsequent loading on densified soil enhances capacity, while loading on loosened soil reduces it. Key factors influencing the shared caisson's bearing capacity include plastic deformation of the surrounding soil and density changes resulting from previous loads.

Keywords: Shared caisson, Multidirectional load, bearing capacity, plastic deformation, Sand density.