DOI: 10.11908/j.issn.0253-374x.19502

作者:

作者单位: 1.同济大学 工程结构服役性能演化与控制教育部重点实验室，上海 200092;2.同济大学 土木工程学院，上海 200092


作者简介: 陈 涛（1980—)，男，教授，博士生导师，工学博士，主要研究方向为新型材料和结构体系研究。E-mail: t.chen@tongji.edu.cn


通讯作者:

中图分类号: TK83


基金项目: 广东省促进经济发展专项基金（粤自然资源合[2019]019）




Numerical Study on Axial Load Bearing Capacity of Grouted Connections in Offshore Wind Turbine Foundation
Author:

Affiliation: 1.Key Laboratory of Performance Evolution and Control for Engineering Structures of the Ministry of Education，Tongji University， Shanghai 200092， China;2.College of Civil Engineering， Tongji University， Shanghai 200092， China


Fund Project:




摘要
| 图/表
| 访问统计
| 参考文献
|相似文献
| 引证文献
| 资源附件

摘要:采用有限元分析方法，对海上风机基础灌浆连接段进行数值参数分析，主要研究了径向刚度、长径比和剪力键高距比对轴心受压承载力的影响，分析了套管与灌浆料之间接触压力的分布规律。研究结果表明，径向刚度的增加可以增强套管和桩管对灌浆料的约束效应，提升灌浆连接段的轴心受压极限承载力和延性；长径比能够提升灌浆连接段轴心受压承载力，但随着长径比的提高，等效黏结强度不断减小，结构的延性也相应地降低；剪力键高距比主要通过影响灌浆段的有效剪力键对数来影响灌浆连接段的轴心受压极限承载力，因此，提升高距比能够提高灌浆连接段的轴心受压承载力。



Abstract:A finite element model for the analysis of grouted connections is established， and the effects of radial stiffness， ratio of length to diameter， and height-to-space ratio of shear keys on the ultimate axial bearing capacity are studied. Besides， the distribution of contact pressure between steel tube and grout material is also analyzed. The results show that the increase in radial stiffness can enhance the restraint effect on the grout and improve the axial ultimate bearing capacity of grouted connections. The ratio of length to diameter can significantly improve the ultimate bearing capacity， but at the same time， the interface transfer strength and ductility of grouted connections decrease continuously. The height-to-space ratio of shear keys mainly affects the number of shear keys in grouted connections， thus affecting the ultimate bearing capacity of grouted connection. The increase in the height-to-distance ratio can improve the ultimate bearing capacity of grouted connection.





PDF全文下载地址:

点我下载PDF