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学者姓名：王丕光
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摘要 ：
针对水-轴对称柱体动力相互作用问题,提出了一种地震作用下水-结构相互作用的时域子结构分析方法。基于三维不可压缩水体的波动方程和边界条件,利用分离变量法将其转换为环向解析、竖向和径向数值的二维模型;基于比例边界有限元推导了截断边界处无限域水体的动力刚度方程,并将水体内域有限元方程和人工边界处的动水压力进行耦合,从而得到结构表面的动水压力方程;将轴对称柱体结构的有限元方程与动水压力方程耦合,从而得到水-轴对称柱体结构系统的时域有限元方程;数值算例验证该文提出的水-轴对称动力相互作用的子结构方法,结果表明:该文方法具有很高的精度和计算效率。通过对水中轴对称结构地震响应和自振频率的分析表明:地震动水压...
关键词 ：
地震 地震 水-轴对称结构相互作用 水-轴对称结构相互作用 有限元 有限元 比例边界有限元 比例边界有限元 轴对称柱体 轴对称柱体
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| GB/T 7714 | 王晓静 , 赵密 , 王丕光 et al. 地震作用下水-轴对称柱体相互作用的子结构分析方法 [J]. | 工程力学 , 2021 , 38 (02) : 27-35 . |
| MLA | 王晓静 et al. "地震作用下水-轴对称柱体相互作用的子结构分析方法" . | 工程力学 38 . 02 (2021) : 27-35 . |
| APA | 王晓静 , 赵密 , 王丕光 , 杜修力 , 程星磊 . 地震作用下水-轴对称柱体相互作用的子结构分析方法 . | 工程力学 , 2021 , 38 (02) , 27-35 . |
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摘要 ：
单桩式海上风力机整体化地震反应
关键词 ：
单桩式海上风机 单桩式海上风机 风-波浪统计关系 风-波浪统计关系 地震响应 地震响应 土-结相互作用 土-结相互作用 风-波浪-地震共同作用 风-波浪-地震共同作用
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| GB/T 7714 | 席仁强 , 杜修力 , 王丕光 et al. 单桩式海上风力机整体化地震反应 [J]. | 席仁强 , 2021 , 55 (4) : 757-766 . |
| MLA | 席仁强 et al. "单桩式海上风力机整体化地震反应" . | 席仁强 55 . 4 (2021) : 757-766 . |
| APA | 席仁强 , 杜修力 , 王丕光 , 许成顺 , 许坤 , 浙江大学学报:工学版 . 单桩式海上风力机整体化地震反应 . | 席仁强 , 2021 , 55 (4) , 757-766 . |
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摘要 ：
为了探讨风-波浪-地震共同作用下单桩式海上风机(OWTs)的动力行为,以National Renewable Energy Laboratory(NREL)5 MW风力发电机为研究对象,将风、地震作为独立事件,根据风-波浪统计关系确定波浪谱参数.改进FAST软件以模拟土-结相互作用,考虑停机、运行和应急停机3种工况,采用气动-伺服-水动-弹性耦合方法分析海上风机地震响应.算例表明,工作状态显著影响海上风机支撑结构的运动和内力,规律与地震强弱有关;地震动显著影响叶片挥舞振动速度;在风-波浪-地震的共同作用下,海上风机支撑结构危险截面剪力和弯矩峰值超过极端风-波浪作用效应.
关键词 ：
地震响应 地震响应 风-波浪统计关系 风-波浪统计关系 单桩式海上风机 单桩式海上风机 土-结相互作用 土-结相互作用 风-波浪-地震共同作用 风-波浪-地震共同作用
引用：
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| GB/T 7714 | 席仁强 , 杜修力 , 王丕光 et al. 单桩式海上风力机整体化地震反应 [J]. | 浙江大学学报(工学版) , 2021 , 55 (04) : 757-766 . |
| MLA | 席仁强 et al. "单桩式海上风力机整体化地震反应" . | 浙江大学学报(工学版) 55 . 04 (2021) : 757-766 . |
| APA | 席仁强 , 杜修力 , 王丕光 , 许成顺 , 许坤 . 单桩式海上风力机整体化地震反应 . | 浙江大学学报(工学版) , 2021 , 55 (04) , 757-766 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
系统自振频率限制是海上风机结构设计中的一个关键因素。运行状态下风机动力荷载会引起基础的水平侧移,较大的水平侧移会导致基础刚度的降低,进一步影响风机系统的自振频率。该文基于有限元软件ABAQUS平台,建立单桩式海上风机结构系统的自振频率数值模型,并讨论运行状态下基础水平侧移对大直径海上风机系统自振频率的影响。模型中考虑了塔筒的变截面特性;桩-土相互作用通过p-y曲线方法模拟;桩和塔采用梁单元模拟;通过Pushover分析汇总出水平侧移引起的桩顶水平刚度。研究结果表明:桩基侧向位移会降低风机结构体系的自振频率;桩基侧向位移对基频的影响较小,对高阶频率的影响显著;大直径海上风机的频率计算中可忽略风机...
关键词 ：
单桩基础 单桩基础 桩-土相互作用 桩-土相互作用 自振频率 自振频率 海上风机 海上风机
引用：
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| GB/T 7714 | 王丕光 , 刘晶波 , 赵密 . 运行状态下海上单桩风机系统自振频率分析 [J]. | 地震工程学报 , 2021 , 43 (03) : 704-709 . |
| MLA | 王丕光 et al. "运行状态下海上单桩风机系统自振频率分析" . | 地震工程学报 43 . 03 (2021) : 704-709 . |
| APA | 王丕光 , 刘晶波 , 赵密 . 运行状态下海上单桩风机系统自振频率分析 . | 地震工程学报 , 2021 , 43 (03) , 704-709 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
地震作用下水-轴对称柱体相互作用的子结构分析方法
关键词 ：
地震 地震 有限元 有限元 比例边界有限元 比例边界有限元 水-轴对称结构相互作用 水-轴对称结构相互作用 轴对称柱体 轴对称柱体
引用：
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| GB/T 7714 | 王晓静 , 赵密 , 王丕光 et al. 地震作用下水-轴对称柱体相互作用的子结构分析方法 [J]. | 王晓静 , 2021 , 38 (2) : 27-35 . |
| MLA | 王晓静 et al. "地震作用下水-轴对称柱体相互作用的子结构分析方法" . | 王晓静 38 . 2 (2021) : 27-35 . |
| APA | 王晓静 , 赵密 , 王丕光 , 杜修力 , 程星磊 , 工程力学 . 地震作用下水-轴对称柱体相互作用的子结构分析方法 . | 王晓静 , 2021 , 38 (2) , 27-35 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
以水中圆柱体为模型,考虑水?结构?土的相互作用,研究柱体结构在地震和波浪共同作用下的动力响应.采用有限元法将柔性柱体结构离散为欧拉?伯努利梁单元,水?结构相互作用通过附加质量代替,土?结构相互作用通过线性弹簧代替.基于结构自振频率分析,讨论土?结构和水?结构相互作用对结构自振频率的影响.研究土?结构相互作用、地震动水力和波浪力对柱体结构动力响应的影响.
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| GB/T 7714 | 黄义铭 , 赵密 , 王丕光 et al. 考虑水-结构-土相互作用下深水圆柱的地震响应分析 [J]. | 振动工程学报 , 2021 , 34 (4) : 730-738 . |
| MLA | 黄义铭 et al. "考虑水-结构-土相互作用下深水圆柱的地震响应分析" . | 振动工程学报 34 . 4 (2021) : 730-738 . |
| APA | 黄义铭 , 赵密 , 王丕光 , 杜修力 , 刘晶波 . 考虑水-结构-土相互作用下深水圆柱的地震响应分析 . | 振动工程学报 , 2021 , 34 (4) , 730-738 . |
| 导入链接 | NoteExpress RIS BibTex |
摘要 ：
The increasing number of wind turbines in areas of active seismicity has attracted scientific interest to evaluate the seismic responses of offshore wind turbine (OWT). The pile-soil dynamic interaction can have significant influence on the seismic responses of OWT. This research aims at investigating the seismic responses of a 5 MW OWT considering nonlinear pile-soil dynamic interaction. The pile is assumed to be rest on the rigid bedrock. The soil nonlinearity is accounted for approximately using an inhomogeneous boundary zone around the pile and a homogeneous zone outside the boundary zone. For simplification purpose, the dynamic analysis of the OWT is divided into two stages. In the first stage, the dynamic resistance factor of soil layer with radially inhomogeneous boundary zone is obtained by using transfer matrix method. In the second stage, a substructure model for dynamic responses of OWT including structure-pile-soil interaction is proposed. A three-dimensional (3D) finite element model (FEM) in Abaqus is used to verify the proposed method. Numerical results show that the proposed model agrees well with the 3D FEM. Finally, the effects of pile-soil interaction on the seismic responses of a 5 MW OWT are investigated. © 2021 Elsevier Ltd
关键词 ：
ABAQUS ABAQUS Dynamic response Dynamic response Earthquakes Earthquakes Offshore oil well production Offshore oil well production Offshore wind turbines Offshore wind turbines Piles Piles Seismic response Seismic response Soils Soils Transfer matrix method Transfer matrix method
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| GB/T 7714 | Wang, Piguang , Xu, Yingduo , Zhang, Xiaoling et al. A substructure method for seismic responses of offshore wind turbine considering nonlinear pile-soil dynamic interaction [J]. | Soil Dynamics and Earthquake Engineering , 2021 , 144 . |
| MLA | Wang, Piguang et al. "A substructure method for seismic responses of offshore wind turbine considering nonlinear pile-soil dynamic interaction" . | Soil Dynamics and Earthquake Engineering 144 (2021) . |
| APA | Wang, Piguang , Xu, Yingduo , Zhang, Xiaoling , Xi, Renqiang , Du, Xiuli . A substructure method for seismic responses of offshore wind turbine considering nonlinear pile-soil dynamic interaction . | Soil Dynamics and Earthquake Engineering , 2021 , 144 . |
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摘要 ：
In this study, a transient seismic structure-water-sediment-rock (SWSR) interaction model is proposed to evaluate seismic response of marine structure in ocean space under obliquely incident earthquake, in which the dynamic interaction between structure and its surrounding media, and wave radiation effect of truncated semi-infinite far field domain are fully considered. One particular advantage of the model is that the sediment layer in ocean space is more realistically modelled as fluid-saturated poroelastic medium. Three main procedures are included in establishing the model: first, a finite element equation of near field domain is established to model multi-media interaction; then a viscous-spring absorbing boundary condition is used to simulate wave radiation effect of truncated far field domain; and in the last, equivalent earthquake loading is obtained from seismic free field response. The model can be solved by a standard time integration algorithm such as implicit Newmark's method. The validity of the numerical framework to establish the SWSR interaction model is demonstrated by analyzing three degenerated models and comparing with reference solutions. The seismic SWSR interaction model is finally applied to assess seismic response of an immersed tunnel, with emphasis on the effects of sediment properties here including thickness, porosity and permeability, and the seismic wave incident angle on structural dynamic responses. © 2020 Elsevier Ltd
关键词 ：
Earthquakes Earthquakes Offshore structures Offshore structures Radiation effects Radiation effects Sediments Sediments Seismic response Seismic response Structural dynamics Structural dynamics Tunnels Tunnels
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| GB/T 7714 | Zhang, Guoliang , Wang, Piguang , Zhao, Mi et al. Seismic structure-water-sediment-rock interaction model and its application to immersed tunnel analysis under obliquely incident earthquake [J]. | Tunnelling and Underground Space Technology , 2021 , 109 . |
| MLA | Zhang, Guoliang et al. "Seismic structure-water-sediment-rock interaction model and its application to immersed tunnel analysis under obliquely incident earthquake" . | Tunnelling and Underground Space Technology 109 (2021) . |
| APA | Zhang, Guoliang , Wang, Piguang , Zhao, Mi , Du, Xiuli , Zhao, Xu . Seismic structure-water-sediment-rock interaction model and its application to immersed tunnel analysis under obliquely incident earthquake . | Tunnelling and Underground Space Technology , 2021 , 109 . |
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摘要 ：
The bridges play an important transportation hub in the transportation lifeline system. The sea-crossing bridges located in earthquake-prone areas may be subjected to earthquake and wave action during their lifetime. This paper mainly investigates the seismic performance of continuous rigid frame bridges supported by group pile foundations based on the seismic fragility analysis. Based on the OpenSees software, the three-dimensional finite element model of the sea-crossing bridge is developed, where the pile-water interaction and pile-soil interaction are simulated by added mass method and p-y curve method, respectively. The uniform input ground motions are used by applying the displacement of the surface ground motion on all spring supports. Based on the traditional structural seismic vulnerability analysis and introducing the theory of reliability, the damage index is reduced by a half-trapezoidal distribution membership function, and the structural damage boundary is fuzzy analyzed to obtain the fuzzy components. Further, the damage limit about the vulnerability of the full bridge system is discussed. Finally, the influence of wave force on structural seismic vulnerability and the vulnerability of the full bridge model under different earthquake types, such as far-field, near-field pulse, and near-field non-pulse types, are analyzed.
关键词 ：
Combined earthquake and wave action Combined earthquake and wave action Fuzzy failure Fuzzy failure Pile-soil interaction Pile-soil interaction Sea-crossing bridge Sea-crossing bridge Seismic fragility Seismic fragility
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| GB/T 7714 | Zhang, Chao , Lu, Jianbin , Wang, Piguang et al. Seismic fragility analysis of sea-crossing continuous rigid frame bridges based on fuzzy failure [J]. | STRUCTURES , 2021 , 34 : 120-134 . |
| MLA | Zhang, Chao et al. "Seismic fragility analysis of sea-crossing continuous rigid frame bridges based on fuzzy failure" . | STRUCTURES 34 (2021) : 120-134 . |
| APA | Zhang, Chao , Lu, Jianbin , Wang, Piguang , Lai, Zhichao , Jia, Hongyu , Wu, Chengwang . Seismic fragility analysis of sea-crossing continuous rigid frame bridges based on fuzzy failure . | STRUCTURES , 2021 , 34 , 120-134 . |
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摘要 ：
In this study, the monopile of a 10 MW offshore wind turbine (OWT) is designed for a specific ocean site, and a new soil-structure interaction (SSI) framework is developed for the aero-servo-hydro-elastic code FAST. Taking the DTU 10 MW OWT as the prototype, a Bladed-style controller is developed to regulate the rotor speed and blade-pitch angle, and its performance is evaluated by comparisons with the DTU original controller. Subsequently, an SSI analysis model is established for FAST using the nonlinear Winkler foundation model, and this module is verified by the analysis results obtained from GL-Bladed software. In addition, the monopile of this 10 MW OWT is designed for layered sand adopting the metocean data from the North Sea. The soft-stiff design philosophy is used in this task, and the 1st-order natural frequency of the system is 0.22 Hz lying in the middle of 1P and 3P frequency bands of OWT. Besides, the dynamic response and fatigue damage of this 10 MW monopile supported OWT are investigated using the fully coupled model. The results show that SSI effect and time-variant blade-pitch angle significantly influence the dynamic response of OWT and fatigue life of the monopile.
关键词 ：
10 MW offshore Wind turbine 10 MW offshore Wind turbine Controller Controller Dynamic response analysis Dynamic response analysis Fully coupled model Fully coupled model Soil-structure interaction Soil-structure interaction
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| GB/T 7714 | Xi, Renqiang , Du, Xiuli , Wang, Piguang et al. Dynamic analysis of 10 MW monopile supported offshore wind turbine based on fully coupled model [J]. | OCEAN ENGINEERING , 2021 , 234 . |
| MLA | Xi, Renqiang et al. "Dynamic analysis of 10 MW monopile supported offshore wind turbine based on fully coupled model" . | OCEAN ENGINEERING 234 (2021) . |
| APA | Xi, Renqiang , Du, Xiuli , Wang, Piguang , Xu, Chengshun , Zhai, Endi , Wang, Suyu . Dynamic analysis of 10 MW monopile supported offshore wind turbine based on fully coupled model . | OCEAN ENGINEERING , 2021 , 234 . |
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