期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
考虑注浆结石体影响的隧道管片上浮理论解析
1
作者 朱仰凯 张可能 +3 位作者 胡达 肖超 张云毅 王玺 《中国安全生产科学技术》 CAS CSCD 北大核心 2023年第3期93-100,共8页
为掌握隧道管片在浆液结石体包裹下的上浮变形规律,通过研究圆管抗弯刚度,将浆液结石体与隧道管片形成的圆管组合梁转变为3层叠加组合梁;基于Girhammar 2层叠加组合梁理论与微单元力学分析,推导出考虑层间滑移效应3层组合梁等效抗弯刚... 为掌握隧道管片在浆液结石体包裹下的上浮变形规律,通过研究圆管抗弯刚度,将浆液结石体与隧道管片形成的圆管组合梁转变为3层叠加组合梁;基于Girhammar 2层叠加组合梁理论与微单元力学分析,推导出考虑层间滑移效应3层组合梁等效抗弯刚度公式,进而采用温克勒弹性地基条件建立隧道管片上浮力学模型;结合工程实例,对比力学模型理论解析、实测数据和数值计算结果,并进行参数灵敏性分析。研究结果表明:力学模型理论解析、实测数据和数值计算结果吻合度较高,表明力学模型有效;浆液结石体留存厚度的增加可以有效降低隧道结构承受的弯矩,提高隧道结构安全性能;随着隧道两端约束的传递衰减,隧道上浮跨度超过140 m后,隧道变形最大值基本达到稳定。研究结果可用于预测隧道管片的上浮变形,并为隧道变形控制提供依据,促进隧道病害的安全治理。 展开更多
关键词 管片上浮 浆液结石体 叠加组合梁 等效抗弯刚度 上浮力学模型
下载PDF
Motion Characteristics of Novel Floating Foundation for Offshore Wind Turbine 被引量:1
2
作者 李嘉文 唐友刚 王宾 《Transactions of Tianjin University》 EI CAS 2016年第1期57-63,共7页
A novel floating foundation to support the NREL offshore 5 MW wind turbine was designed conceptually by combining the characteristics of barge and Spar. The main focus was structural design and hydrodynamic modelling.... A novel floating foundation to support the NREL offshore 5 MW wind turbine was designed conceptually by combining the characteristics of barge and Spar. The main focus was structural design and hydrodynamic modelling. Based on this novel floating foundation, the hydrodynamic performance was investigated in the frequency domain and time domain by using the wave analysis software Hydro D and Deep C from Det Norske Veritas. The frequency domain analysis was conducted to investigate the effects of the incident wave angle and water depth. The time-domain analysis was carried out to evaluate the response of the floating foundation under a selected operational condition. The hydrodynamic performances of this floating foundation with respect to time series and response spectra were also investigated in this study. 展开更多
关键词 offshore wind turbine floating foundation frequency domain analysis time domain analysis
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部