大直径单桩基础稳桩平台结构强度分析
Structural Strength Analysis of Pile-driven Platform for Large Diameter Monopile
张犇 1覃廖开1
作者信息
- 1. 江苏龙源振华海洋工程有限公司 海上风电工程技术研究院,江苏 南通 226014
- 折叠
摘要
针对自升式海上风电安装船/平台自带的抱桩器纠偏载荷较小、传统稳桩平台作业水深有限、均无法满足大直径单桩基础沉桩作业需求等问题,设计一款可适用于大直径单桩基础施工的新型稳桩平台.考虑稳桩平台底部有支撑和无支撑两种情况,采用SESAM软件对其整体结构强度进行计算分析;基于DNV规范,分别采用手工计算校核和ANSYS Workbench软件模拟两种方式,对其主吊耳局部结构强度进行评估.结果表明,新型稳桩平台整体结构强度和主吊耳局部结构强度均满足要求,主吊耳有限元计算应力值较手工校核应力值更大.
Abstract
Due to the lower correcting force of onboard pile holder of self-elevating offshore wind power installation vessel/platform,and the limited operating depth of traditional driven platform,both of them cannot meet the pile sinking requirements for large diameter monopile.A new type platform which can be suitable for large monopile sinking operation was designed in view of the above problems.The global structural strength of the platform was assessed using SESAM software,both supported condi-tion and unsupported condition of the bottom were considered.Hand calculation and finite element analysis were used respectively to assess the strength of the main pad-eye in light of DNV rules.The results showed that the global structural strength and the lo-cal strength of main pad-eye can meet the rules requirement,and the stress value of pad-eye by finite element analysis are greater than hand calculation.
关键词
大直径单桩基础/稳桩平台/结构强度Key words
large diameter monopile/pile-driven platform/structural strength引用本文复制引用
出版年
2024
NETL
NSTL
万方数据