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学者姓名：曹光伟
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Abstract ：
我国近海地震频发,地震作用对海上风电基础与风机结构的稳定性影响大.为了准确有效地计算海上风电结构地震动力响应,该文根据波动理论和斯奈尔定律,推导了基于黏弹性人工边界的三维成层土地震等效节点力计算公式,并验证了其准确性.在此基础上,以福建莆田某风电场地基为例,建立5 MW风机-单桩-成层海床三维一体化数值分析模型,进行了地震作用下的海上风电动力响应分析.研究表明:当地震发生时,地基中不同位置的土体响应不同,对于浅层桩周土体,距离桩基越近,土体加速度响应越小,桩基会对浅层桩周土体的加速度有一定抑制作用;桩基对不同深度的土层剪应变影响也相差较大.对于风机结构而言,最大位移发生在塔架顶部,最大加速度和最大应力发生在塔架中部.
Keyword ：
单桩式海上风电 单桩式海上风电 地震响应 地震响应 成层地基 成层地基 等效节点力 等效节点力 黏弹性人工边界 黏弹性人工边界
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| GB/T 7714 | 陈志波 , 刘海波 , 曹光伟 et al. 基于黏弹性人工边界的成层地基中海上风机地震响应分析 [J]. | 振动与冲击 , 2025 , 44 (3) : 291-300,308 . |
| MLA | 陈志波 et al. "基于黏弹性人工边界的成层地基中海上风机地震响应分析" . | 振动与冲击 44 . 3 (2025) : 291-300,308 . |
| APA | 陈志波 , 刘海波 , 曹光伟 , 何奔 , 曾旭明 , 潘生贵 . 基于黏弹性人工边界的成层地基中海上风机地震响应分析 . | 振动与冲击 , 2025 , 44 (3) , 291-300,308 . |
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Coral sand is characterized by the unique properties different from conventional sediments. To investigate the horizontal bearing characteristics of 2 x 2 pile groups in coral sand foundation, a series of centrifuge model tests were conducted, focusing on the effects of pile spacing and vertical dead loads. In this study, the load-displacement responses, bending moments, lateral deflections, and axial force variations were measured. Additionally, soil resistance, p-y curves, and p-multipliers were calculated and analyzed. Results show that increasing pile spacing from 3 to 5D and 7D enhanced the bearing capacity of the pile group by 24.7% and 77.0%, respectively. Compared to the leading pile, the rear pile exhibited reduced bending moments, increased lateral displacements, and lower soil resistance and p-multipliers due to pile-soil-pile interaction and the shadowing effect. Furthermore, the applied vertical dead load amplified the lateral displacement and bending moments of pile due to the P-Delta effect while enhancing soil resistance and increasing p-multipliers through vertical compression. These findings provide valuable insights for future experimental and theoretical research on pile groups in coral sand foundations.
Keyword ：
Centrifuge test Centrifuge test Coral sand Coral sand Horizontal load Horizontal load Pile group Pile group p-Multipliers p-Multipliers
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| GB/T 7714 | Wang, Chunyan , Li, Xiao , Liu, Hanlong et al. Centrifuge tests on horizontal bearing characteristics of pile groups in coral sand [J]. | ACTA GEOTECHNICA , 2025 , 20 (8) : 3973-3986 . |
| MLA | Wang, Chunyan et al. "Centrifuge tests on horizontal bearing characteristics of pile groups in coral sand" . | ACTA GEOTECHNICA 20 . 8 (2025) : 3973-3986 . |
| APA | Wang, Chunyan , Li, Xiao , Liu, Hanlong , Ding, Xuanming , Cao, Guangwei , Jiang, Chunyong et al. Centrifuge tests on horizontal bearing characteristics of pile groups in coral sand . | ACTA GEOTECHNICA , 2025 , 20 (8) , 3973-3986 . |
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Earthquakes occur frequently in China ' s offshore areas, and seismio aotions significantly affeot the stability of offshore wind power foundations and wind turbine structures. Here, to correctly and effectively calculate seismic dynamic responses of offshore wind power structures, a viscoelastic artificial boundary-based 3D layered soil seismic equivalent node force calculation formula was derived according to wave theory and Snell law, and its correctness was verified. Then, taking the foundation of a certain wind power field in Putian, Fujian Province as an example, a 3D integrated numerical analysis model for 5 MW wind turbine-single pile-layered seabed was established to analyze dynamic response of offshore wind power under earthquake. The study showed that when earthquake occurs, responses of soil bodies at different positions in foundation are different, for shallow soil body around pile, the closer the distance to pile foundation, the smaller the soil body acceleration response, pile foundation can have a certain suppressing effect on acceleration of shallow layer soil body around piles; effects of pile foundation on shear strain of soil layers at different depths also have larger differences; for wind turbine structure, the maximum displacement occurs at tower top, while the maximum acceleration and the maximum stress occur in middle of tower. © 2025 Chinese Vibration Engineering Society. All rights reserved.
Keyword ：
Dynamic response Dynamic response Earthquake effects Earthquake effects Earthquake engineering Earthquake engineering Offshore structures Offshore structures Offshore wind turbines Offshore wind turbines Pile foundations Pile foundations Piles Piles Seismic response Seismic response Shear deformation Shear deformation Shear flow Shear flow Shear strain Shear strain Structural dynamics Structural dynamics Vibration analysis Vibration analysis
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| GB/T 7714 | Chen, Zhibo , Liu, Haibo , Cao, Guangwei et al. Seismic response analysis of offshore wind turbine in layered subsoils based on viscoelastic artificial boundary [J]. | Journal of Vibration and Shock , 2025 , 44 (3) : 291-300 and 308 . |
| MLA | Chen, Zhibo et al. "Seismic response analysis of offshore wind turbine in layered subsoils based on viscoelastic artificial boundary" . | Journal of Vibration and Shock 44 . 3 (2025) : 291-300 and 308 . |
| APA | Chen, Zhibo , Liu, Haibo , Cao, Guangwei , He, Ben , Zeng, Xuming , Pan, Shenggui . Seismic response analysis of offshore wind turbine in layered subsoils based on viscoelastic artificial boundary . | Journal of Vibration and Shock , 2025 , 44 (3) , 291-300 and 308 . |
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The analytical solution for the lateral dynamic response of offshore large-diameter pipe piles embedded in seawater and layered saturated seabed soil is proposed. The hydrodynamic pressures of the outer and inner seawater are derived based on the inviscid compressible assumption of fluid, and the dynamic soil resistances of the outer and inner layered saturated seabed soil are derived based on Biot's poroelastic theory. The analytical expressions of the lateral dynamic response of the pile are obtained by using the transfer matrix method, and the dynamic characteristics of the lateral response of offshore pipe piles are parametrically investigated. It is concluded from the analysis results that the outer and inner hydrodynamic pressures significantly affect the natural frequency of the pile-water-soil system. Additionally, employing a homogeneous soil model with the same average modulus to represent the layered seabed soil can lead to significantly inaccurate estimations of the natural frequency and pile-head displacement of offshore pipe piles.
Keyword ：
Dynamic response Dynamic response Hydrodynamic pressure Hydrodynamic pressure Lateral vibration Lateral vibration Layered poroelastic soil Layered poroelastic soil Offshore pipe piles Offshore pipe piles
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| GB/T 7714 | Zheng, Changjie , Lin, Hao , Zhang, Zhichao et al. Response of offshore large-diameter pipe piles in layered poroelastic soil to lateral dynamic loading [J]. | OCEAN ENGINEERING , 2025 , 316 . |
| MLA | Zheng, Changjie et al. "Response of offshore large-diameter pipe piles in layered poroelastic soil to lateral dynamic loading" . | OCEAN ENGINEERING 316 (2025) . |
| APA | Zheng, Changjie , Lin, Hao , Zhang, Zhichao , Ding, Xuanming , Cao, Guangwei . Response of offshore large-diameter pipe piles in layered poroelastic soil to lateral dynamic loading . | OCEAN ENGINEERING , 2025 , 316 . |
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Earthquakes occur frequently in China's southeast coastal areas. Therefore, in this region, offshore wind turbine (OWT) structures are highly likely to be simultaneously affected by wind, waves and earthquakes. Firstly, based on the wave theory and Snell's law, this paper deduces the formulas for the equivalent seismic nodal force of layered soils suitable for viscoelastic artificial boundaries. Compared with a method that employs an average modulus to calculate the seismic motion input of layered soils, the proposed formulas enable more accurate simulation of seismic wave propagation in layered soils. Based on the formulas, an integrated numerical model incorporating a nacelle, tower, monopile and layered seabed is established to analyse the dynamic response of large-diameter monopiles of OWTs under stochastic wind, wave and seismic loads. The analysis results show that the displacement and stress responses under combined wind-wave loads are larger than those under the individual wind/wave load, showing obvious amplification effects, but the maximum acceleration at the mudline indicates an inhibitory effect, which is not consistent with a superposition principle. Under the combined wind-wave-seismic loads, the monopile acceleration is primarily attributable to the seismic load, with wind and wave loads mitigating the acceleration response caused by the seismic load. Moreover, the seismic load has little effect on the monopile's stress but increases its displacement, especially at the mudline. Thus, additional treatment for foundation deformation is needed for the monopile design in seismic areas. © 2025
Keyword ：
Dynamic response Dynamic response Earthquakes Earthquakes Loads (forces) Loads (forces) Offshore oil well production Offshore oil well production Offshore wind turbines Offshore wind turbines Seismic design Seismic design Seismic waves Seismic waves Stochastic models Stochastic models Stochastic systems Stochastic systems Viscoelasticity Viscoelasticity Wave propagation Wave propagation
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| GB/T 7714 | Chen, Zhibo , Chen, Feng , Liu, Haibo et al. Dynamic response of offshore wind turbine monopile foundations in layered soils under wind, wave and earthquake actions [J]. | Applied Ocean Research , 2025 , 162 . |
| MLA | Chen, Zhibo et al. "Dynamic response of offshore wind turbine monopile foundations in layered soils under wind, wave and earthquake actions" . | Applied Ocean Research 162 (2025) . |
| APA | Chen, Zhibo , Chen, Feng , Liu, Haibo , Cao, Guangwei , Huang, Wei . Dynamic response of offshore wind turbine monopile foundations in layered soils under wind, wave and earthquake actions . | Applied Ocean Research , 2025 , 162 . |
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Strain rate effects significantly alter the mechanical behavior of concrete and steel, impacting the seismic performance of concrete structures. During earthquakes, the dynamic properties of these materials fluctuate with time-varying loading rates, yet conventional seismic designs often rely on static assumptions, neglecting strain rate sensitivity and leading to potential inaccuracies. To address this gap, this study presents an enhanced fiber beam element model incorporating strain rate-dependent constitutive laws for concrete and steel, enabling precise simulations of seismic responses and collapse mechanisms. Designed for material, element-level and fullstructure analysis, the model captures dynamic material behavior, providing accurate assessments of nonlinear seismic responses and collapse potential in RC, steel, and steel-concrete composite structures. Extensive validation across multiple scales-from material properties to system-level structural performance-demonstrates strong agreement with experimental data, ensuring reliability in seismic and collapse analyses. Additionally, the model maintains computational efficiency, making it feasible for structural simulations and providing a versatile tool for enhancing structural resilience and disaster prevention in engineering applications.
Keyword ：
Collapse analysis Collapse analysis Fiber beam element model Fiber beam element model Reinforced concrete structures Reinforced concrete structures Seismic response Seismic response Strain rate effects Strain rate effects
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| GB/T 7714 | Zhang, Hao , Li, Anqi , Cao, Guangwei et al. A strain-rate-sensitive fiber beam element model for seismic dynamic response analysis of building structures [J]. | STRUCTURES , 2025 , 79 . |
| MLA | Zhang, Hao et al. "A strain-rate-sensitive fiber beam element model for seismic dynamic response analysis of building structures" . | STRUCTURES 79 (2025) . |
| APA | Zhang, Hao , Li, Anqi , Cao, Guangwei , Li, Hongnan , Hou, Shiwei , Liu, Pengfei . A strain-rate-sensitive fiber beam element model for seismic dynamic response analysis of building structures . | STRUCTURES , 2025 , 79 . |
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Abstract ：
针对海上风电单桩基础在风浪荷载作用下的受力分析方法尚不完善,以及桩、土参数对桩基动力响应的影响机制尚未明确的问题,提出塔架-桩基-土体三维一体化模型分析方法.以福建莆田某风电项目为工程背景,选用Davenport风速谱和P-M双参数波浪谱,运用自回归法和谐波叠加法分别模拟得到风荷载与波浪荷载;通过对海上风电单桩基础在风浪荷载下的动力响应进行计算,探究桩、土体参数对风浪荷载下桩基动力响应的影响规律.研究结果表明:随着桩径的增加,桩身弯矩逐渐加大,位移响应减小;随着桩基壁厚的增加,桩基在风浪荷载下的最大位移和弯矩响应逐渐减小;增大土体的弹性模量,桩基在风浪荷载下的位移和弯矩响应逐渐减弱.
Keyword ：
单桩式海上风机 单桩式海上风机 数值模拟 数值模拟 桩土参数 桩土参数 风浪荷载 风浪荷载
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| GB/T 7714 | 陈志波 , 刘海波 , 刘秋铭 et al. 风机-基础三维一体化建模的海上风电单桩基础动力响应 [J]. | 福州大学学报（自然科学版） , 2025 , 53 (2) : 193-200 . |
| MLA | 陈志波 et al. "风机-基础三维一体化建模的海上风电单桩基础动力响应" . | 福州大学学报（自然科学版） 53 . 2 (2025) : 193-200 . |
| APA | 陈志波 , 刘海波 , 刘秋铭 , 谢永宁 , 曹光伟 , 曾旭明 et al. 风机-基础三维一体化建模的海上风电单桩基础动力响应 . | 福州大学学报（自然科学版） , 2025 , 53 (2) , 193-200 . |
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In this study, the shaking table tests were conducted to investigate the seismic response of a high-filled reinforced embankment supported by pile and slab structure on slope terrain. The macroscopic damage phenomena of the test model, acceleration response, displacement, dynamic earth pressure and bending moment of the pile were thoroughly examined and discussed. The results revealed that the high-filled subgrade reinforced embankment had a favorable seismic stability. Despite the absence of collapse after 1.2 g seismic load, there was a certain extent reduction in structural resonance frequency. The dynamic earth pressure behind the pile initially increased from the top to the bottom and subsequently decreased near the soil boundary. However, with the seismic magnitude increasing, the peak value of the earth pressure near the pile bottom gradually increased due to pile rotation. The bending moment of the pile presented a bow-shaped distribution. The acceleration exhibited a notable amplification effect along the height of model, while the horizontal acceleration amplification factor decreased with seismic magnitude. Furthermore, the time-frequency domain characteristics and energy distribution of the model were investigated using the Hilbert-Huang Transform. This study provides a theoretical basis for the design of supporting structures for high-filled subgrades in high-intensity earthquake areas.
Keyword ：
Anti-slide piles Anti-slide piles High-filled embankment High-filled embankment Hilbert-Huang transform Hilbert-Huang transform Shaking table test Shaking table test
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| GB/T 7714 | Deng, Weiting , Ding, Xuanming , Yang, Changwei et al. Seismic response of high-filled reinforced embankment supported by pile and slab structure on slope terrain [J]. | TRANSPORTATION GEOTECHNICS , 2025 , 50 . |
| MLA | Deng, Weiting et al. "Seismic response of high-filled reinforced embankment supported by pile and slab structure on slope terrain" . | TRANSPORTATION GEOTECHNICS 50 (2025) . |
| APA | Deng, Weiting , Ding, Xuanming , Yang, Changwei , Ou, Qiang , Wang, Chunyan , Cao, Guangwei et al. Seismic response of high-filled reinforced embankment supported by pile and slab structure on slope terrain . | TRANSPORTATION GEOTECHNICS , 2025 , 50 . |
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At present, research on XCC piles has mainly focused on clay foundations; however, there has been little research on XCC piles in sand. In addition, the compaction effect of a pile had been mainly analyzed when the penetration of the XCC pile was studied, while ignoring the key problem that these compaction displacement loads produce additional pile responses to adjacent existing piles in actual engineering constructions. Therefore, this study adopted a Coupled Eulerian-Lagrangian (CEL) large deformation numerical technique for establishing an integrated CEL finite element numerical model of an adjacent XCC pile-sand-existing XCC pile. The numerical results were compared with the measured data from indoor model tests, which verified the feasibility and validated the CEL numerical technique for analyzing adjacent XCC pile-soil-existing XCC pile interactions. Subsequently, a series of parametric studies were performed to explore the influences of the penetration depth, spacing between adjacent piles and existing piles, and boundary conditions of the existing pile head on the lateral response of the existing pile. Finally, based on the results of the parametric analysis, a set of design charts that can be used by geotechnical engineers to evaluate the maximum lateral response of existing XCC piles caused by the penetration of adjacent XCC piles at the early design stage were developed to mitigate the risks associated with pile foundation construction. © 2024 Chang'an University. All rights reserved.
Keyword ：
Compaction Compaction Geotechnical engineering Geotechnical engineering Numerical methods Numerical methods Piles Piles Risk assessment Risk assessment
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| GB/T 7714 | Zhou, Peng , Xia, Liang-Li , Liu, Han-Long et al. Study on the Influence of Adjacent XCC Pile on Existing XCC Single Pile in Sand Based on CEL Method [J]. | China Journal of Highway and Transport , 2024 , 37 (4) : 141-154 . |
| MLA | Zhou, Peng et al. "Study on the Influence of Adjacent XCC Pile on Existing XCC Single Pile in Sand Based on CEL Method" . | China Journal of Highway and Transport 37 . 4 (2024) : 141-154 . |
| APA | Zhou, Peng , Xia, Liang-Li , Liu, Han-Long , Xu, Chang-Jie , Cui, Jie , Cao, Guang-Wei et al. Study on the Influence of Adjacent XCC Pile on Existing XCC Single Pile in Sand Based on CEL Method . | China Journal of Highway and Transport , 2024 , 37 (4) , 141-154 . |
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The bearing capacity and deformation behavior of coral sand foundations, a geotechnical structure commonly employed in coastal and island construction, are investigated in this study. Coral sand presents unique challenges due to its angularity and crushability, which affect interparticle interactions. Model tests and three-dimensional discrete-continuous coupled numerical simulations are performed to understand these complexities, focusing on the impacts of relative density, footing size and shape, and particle crushing on the foundation performance. The testing and numerical simulation data reveal that the bearing capacity of coral sand foundations significantly improves with increasing relative density and footing size. Compared with square footings, circular footings exhibit superior bearing performance at a 70% relative density. However, increased particle crushing reduces the bearing capacity. These findings are evaluated and compared with the theoretical ultimate bearing capacities. Intense crushing and occlusions are observed directly beneath the footing, with marked increases in particle fragments, microscopic contact forces, and coordination numbers within this core region. Additionally, the deformation analysis reveals a symmetrical failure pattern in the coral sand foundations. This study delves into the microscopic interactions between particle crushing and its influence on the bearing and settlement performance, offering insights into the interplay between crushing, stress, and deformation.
Keyword ：
Bearing capacity Bearing capacity Coral sand foundation Coral sand foundation Discrete element modeling Discrete element modeling Failure mechanism Failure mechanism Particle crushing Particle crushing Shallow footing Shallow footing
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| GB/T 7714 | Luo, Zhaogang , Ding, Xuanming , Zhang, Xihong et al. Experimental and numerical investigation of the bearing capacity and deformation behavior of coral sand foundations under shallow footing loads [J]. | OCEAN ENGINEERING , 2024 , 310 . |
| MLA | Luo, Zhaogang et al. "Experimental and numerical investigation of the bearing capacity and deformation behavior of coral sand foundations under shallow footing loads" . | OCEAN ENGINEERING 310 (2024) . |
| APA | Luo, Zhaogang , Ding, Xuanming , Zhang, Xihong , Ou, Qiang , Yang, Fengchun , Zhang, Ting et al. Experimental and numerical investigation of the bearing capacity and deformation behavior of coral sand foundations under shallow footing loads . | OCEAN ENGINEERING , 2024 , 310 . |
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