在阐述了各国抗震设计规范对钢筋混凝土结构抗震设计使用的“地震力设计法”(force based design)及其所含的评价结构抗震能力的“设计地震力 -延性”联合准则的基础上 ,说明了不能单纯用对比同样设防烈度地面运动峰值加速度条件下设计...在阐述了各国抗震设计规范对钢筋混凝土结构抗震设计使用的“地震力设计法”(force based design)及其所含的评价结构抗震能力的“设计地震力 -延性”联合准则的基础上 ,说明了不能单纯用对比同样设防烈度地面运动峰值加速度条件下设计地震力取值的高低来评价不同抗震设计规范的安全水准。在对新西兰、欧洲共同体、美国、日本和我国抗震设计规范关于钢筋混凝土结构的设计地震力取值原则以及延性要求作了评述和对比后 ,对我国钢筋混凝土结构抗震设计的安全状况作出了评价。展开更多
Japan＇s first open sea offshore wind farm, Kamisu offshore windfarm Phase l, was stricken by an earthquake of intensity 6 on the Japanese seismic scale and a five-meter-high tsunami during the Great East Japan Earthq...Japan＇s first open sea offshore wind farm, Kamisu offshore windfarm Phase l, was stricken by an earthquake of intensity 6 on the Japanese seismic scale and a five-meter-high tsunami during the Great East Japan Earthquake on March 11,2011. The wind farm resumed operation on March 14 after checks revealed no damage to the system, even though the wind farm was temporarily forced to stop due to the grid failure caused by the earthquake. Wind turbines require a precise seismic design especially in an earthquake-prone country such as Japan. Wind power Kamisu Phase 2 was built one year after the earthquake based on the experience of Kamisu Phase 1. This paper presents the seismic design of offshore wind turbines and the situation during the earthquake and tsunami.展开更多
文摘Japan＇s first open sea offshore wind farm, Kamisu offshore windfarm Phase l, was stricken by an earthquake of intensity 6 on the Japanese seismic scale and a five-meter-high tsunami during the Great East Japan Earthquake on March 11,2011. The wind farm resumed operation on March 14 after checks revealed no damage to the system, even though the wind farm was temporarily forced to stop due to the grid failure caused by the earthquake. Wind turbines require a precise seismic design especially in an earthquake-prone country such as Japan. Wind power Kamisu Phase 2 was built one year after the earthquake based on the experience of Kamisu Phase 1. This paper presents the seismic design of offshore wind turbines and the situation during the earthquake and tsunami.
