气象数据是区域气候特征描述的重要基础资料,开展局地长期气象观测对提升区域气象预报准确度和防灾减灾能力、认知与应对气候变化等意义深远。气象因子是中国生态系统研究网络(Chinese Ecosystem Research Network,CERN)各定位站野外观...气象数据是区域气候特征描述的重要基础资料,开展局地长期气象观测对提升区域气象预报准确度和防灾减灾能力、认知与应对气候变化等意义深远。气象因子是中国生态系统研究网络(Chinese Ecosystem Research Network,CERN)各定位站野外观测的重要要素之一。中国科学院鼎湖山森林生态系统定位研究站(简称“鼎湖山站”)位于我国广东的南亚热带北缘,属典型湿润季风型气候,水热资源丰富。基于站内气象观测场,依据CERN大气环境观测规范,开展了局地关键气象要素的长期定位观测与数据质量控制。本数据集详实、系统地报道了鼎湖山站气象观测场2005–2018年VISILA自动观测系统监测数据,以期为区域国民经济相关行业尤其是农、林、水利等领域研究与生产提供数据支撑。展开更多
Spectrum characteristics of different types of seismic waves and dynamic response characteristics of super high-rise building structures under long-period ground motions were comparatively analyzed. First, the ground ...Spectrum characteristics of different types of seismic waves and dynamic response characteristics of super high-rise building structures under long-period ground motions were comparatively analyzed. First, the ground response wave （named LS-R wave） of a soft soil site with deep deposit, taking long-period bedrock seismic record as input, was calculated by wave propagation method. After that, a TOMAKOMAI station long-period seismic record from the Tokachi-Oki earthquake and conventional E1-Centro wave were also chosen. Spectrum characteristics of these waves were analyzed and compared. Then, a series of shaking table tests were performed on a 1：50 scale super high-rise structural model under these seismic waves. Furthermore, numerical simulation of the prototype structure under these excitations was conducted, and structure damages under different intensive ground motions were discussed. The results show that： 1） Spectrum characteristics of ground response wave are significantly influenced by soft soil site with deep deposit, and the predominant period has an increasing trend. 2） The maximum acceleration amplification factor of the structure under the TOM wave is two times that under the E1-Centro wave; while the maximum displacement response of the structure under the TOM wave is 4.4 times that under the E1-Centro wave. Long-period ground motions show greater influences on displacement responses than acceleration responses for super high-rise building structures. 3） Most inelastic damage occurs at the upper 1/3 part of the super high-rise building when subjected to long-period ground motions.展开更多
文摘气象数据是区域气候特征描述的重要基础资料,开展局地长期气象观测对提升区域气象预报准确度和防灾减灾能力、认知与应对气候变化等意义深远。气象因子是中国生态系统研究网络(Chinese Ecosystem Research Network,CERN)各定位站野外观测的重要要素之一。中国科学院鼎湖山森林生态系统定位研究站(简称“鼎湖山站”)位于我国广东的南亚热带北缘,属典型湿润季风型气候,水热资源丰富。基于站内气象观测场,依据CERN大气环境观测规范,开展了局地关键气象要素的长期定位观测与数据质量控制。本数据集详实、系统地报道了鼎湖山站气象观测场2005–2018年VISILA自动观测系统监测数据,以期为区域国民经济相关行业尤其是农、林、水利等领域研究与生产提供数据支撑。
基金Project(50978198) supported by the National Natural Science Foundation of ChinaProject(SLDRCE08-B-03) supported by the Ministry of Science and Technology of China
文摘Spectrum characteristics of different types of seismic waves and dynamic response characteristics of super high-rise building structures under long-period ground motions were comparatively analyzed. First, the ground response wave （named LS-R wave） of a soft soil site with deep deposit, taking long-period bedrock seismic record as input, was calculated by wave propagation method. After that, a TOMAKOMAI station long-period seismic record from the Tokachi-Oki earthquake and conventional E1-Centro wave were also chosen. Spectrum characteristics of these waves were analyzed and compared. Then, a series of shaking table tests were performed on a 1：50 scale super high-rise structural model under these seismic waves. Furthermore, numerical simulation of the prototype structure under these excitations was conducted, and structure damages under different intensive ground motions were discussed. The results show that： 1） Spectrum characteristics of ground response wave are significantly influenced by soft soil site with deep deposit, and the predominant period has an increasing trend. 2） The maximum acceleration amplification factor of the structure under the TOM wave is two times that under the E1-Centro wave; while the maximum displacement response of the structure under the TOM wave is 4.4 times that under the E1-Centro wave. Long-period ground motions show greater influences on displacement responses than acceleration responses for super high-rise building structures. 3） Most inelastic damage occurs at the upper 1/3 part of the super high-rise building when subjected to long-period ground motions.
