风电塔架系统抗震性能分析与安全评价

2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR) Pub Date : 2021-11-06 DOI:10.1109/ICHCESWIDR54323.2021.9656241

Q. Cao

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引用次数: 0

摘要

主要风电塔系结构在地震作用下的抗震安全性和使用性能对整个风电工程的抗震可靠性至关重要。本文提出了一种基于有限元增量动力分析(IDA)的基于性能的风塔系统抗震设计方法，该方法考虑了风塔系统与土壤和地面的相互作用。针对某1.5MW风电塔架系统案例，提出了一种包含分形和易损性分析的基于ida的地震评估方法。然后，通过一系列非线性数值模拟试验，对混凝土基础裂缝的发生、发展、破坏模式及机理进行了研究。

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Seismic Performance Analysis and Safety Assessment of Wind Turbine Tower System

The seismic safety and serviceability of main wind turbine tower system structures after an earthquake is important to the seismic reliability of the whole wind engineering. This study proposed a performance-based seismic design methodology for wind towers system based on the incremental dynamic analysis (IDA) by finite element method, which taken into account the interaction of the tower system with the soil ground. An IDA-based seismic assessment method including fractile and fragility analyses for a 1.5MW wind turbine tower system case was developed. Then, the occurrence and development of the concrete foundation cracks, failure modes and mechanisms were investigated according to a series of nonlinear numerical simulation tests.

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2021 7th International Conference on Hydraulic and Civil Engineering & Smart Water Conservancy and Intelligent Disaster Reduction Forum (ICHCE & SWIDR)

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