This paper presents two possible construction methods that could be adopted in the Wenchuan post-earthquake reconstruction.One is the composite tubular construction and the other is FRP(Fibre Reinforced Polymer) retro...This paper presents two possible construction methods that could be adopted in the Wenchuan post-earthquake reconstruction.One is the composite tubular construction and the other is FRP(Fibre Reinforced Polymer) retrofitting technology.The background of these two methods,the existing research and relevance to Whenchuan post-earthquake reconstruction are described.展开更多
Lijiang, an ancient town in southwestern China that has now become one of the country＇s top tourist destinations, experienced a similar fate in 1996 to that which befell Wenchuan in May - it was almost completely des...Lijiang, an ancient town in southwestern China that has now become one of the country＇s top tourist destinations, experienced a similar fate in 1996 to that which befell Wenchuan in May - it was almost completely destroyed by a powerful earthquake. The town, in western Yunnan, used the earthquake as an opportunity to build a better way of life. After the 7.0 magnitude quake, which caused a direct loss of RMB 6 billion （USD 857 million）, the city successfully applied to become a UNESCO World Heritage Site.展开更多
The earthquake is a natural phenomenon, which often brings serious hazard to the human life and material possession. It is a physical process of releasing interior energy of the earth, which is caused by interior and ...The earthquake is a natural phenomenon, which often brings serious hazard to the human life and material possession. It is a physical process of releasing interior energy of the earth, which is caused by interior and outer forces in special tectonic environment in the earth, especially within the lithosphere. The earthquake only causes casualty and loss in the place where people inhabit. Seismic hazard reduction is composed of four parts as seismic prediction, hazard prevention and seismic engineering, seismic response and seismic rescuing, and rebuilding.展开更多
Yes,the earthquake is a desper- ate disaster to China,but what we could see from this havoc is more than ruin itself.Every story under the name of love touched our hearts and souls.With their moving and touching voice...Yes,the earthquake is a desper- ate disaster to China,but what we could see from this havoc is more than ruin itself.Every story under the name of love touched our hearts and souls.With their moving and touching voices hovering above the seis- mic zone,let's dry our tears and do our best to rebuild the land of abundance...展开更多
地震数据重建对地震资料处理和成像具有重要意义。基于压缩感知的地震数据重建方法是应用较广泛的一类方法,其中的稀疏变换、迭代算法和阈值模型等的选取将影响最终地震数据重建的效果和计算效率。本文着重分析了Fourier、Curvelet和Sei...地震数据重建对地震资料处理和成像具有重要意义。基于压缩感知的地震数据重建方法是应用较广泛的一类方法,其中的稀疏变换、迭代算法和阈值模型等的选取将影响最终地震数据重建的效果和计算效率。本文着重分析了Fourier、Curvelet和Seislet这三种稀疏变换对地震数据重建的影响,比较了POCS(Projection onto Convex Sets)、IHT(Iterative Hard Thresholding)、Bregman和JRSI(Joint Reconstruction by Sparsity-promoting Inversion)四种迭代算法各自的优缺点,研究了线性、指数和数据驱动三种不同阈值模型的特性。通过模拟和实际算例对比分析了压缩感知地震数据重建过程中上述三个关键因素的影响,得到了三方面的重要认识和结论,为在实际地震数据重建中选择上述因素提供了可靠依据和现实建议。展开更多
文摘This paper presents two possible construction methods that could be adopted in the Wenchuan post-earthquake reconstruction.One is the composite tubular construction and the other is FRP(Fibre Reinforced Polymer) retrofitting technology.The background of these two methods,the existing research and relevance to Whenchuan post-earthquake reconstruction are described.
文摘Lijiang, an ancient town in southwestern China that has now become one of the country＇s top tourist destinations, experienced a similar fate in 1996 to that which befell Wenchuan in May - it was almost completely destroyed by a powerful earthquake. The town, in western Yunnan, used the earthquake as an opportunity to build a better way of life. After the 7.0 magnitude quake, which caused a direct loss of RMB 6 billion （USD 857 million）, the city successfully applied to become a UNESCO World Heritage Site.
文摘The earthquake is a natural phenomenon, which often brings serious hazard to the human life and material possession. It is a physical process of releasing interior energy of the earth, which is caused by interior and outer forces in special tectonic environment in the earth, especially within the lithosphere. The earthquake only causes casualty and loss in the place where people inhabit. Seismic hazard reduction is composed of four parts as seismic prediction, hazard prevention and seismic engineering, seismic response and seismic rescuing, and rebuilding.
文摘Yes,the earthquake is a desper- ate disaster to China,but what we could see from this havoc is more than ruin itself.Every story under the name of love touched our hearts and souls.With their moving and touching voices hovering above the seis- mic zone,let's dry our tears and do our best to rebuild the land of abundance...
文摘地震数据重建对地震资料处理和成像具有重要意义。基于压缩感知的地震数据重建方法是应用较广泛的一类方法,其中的稀疏变换、迭代算法和阈值模型等的选取将影响最终地震数据重建的效果和计算效率。本文着重分析了Fourier、Curvelet和Seislet这三种稀疏变换对地震数据重建的影响,比较了POCS(Projection onto Convex Sets)、IHT(Iterative Hard Thresholding)、Bregman和JRSI(Joint Reconstruction by Sparsity-promoting Inversion)四种迭代算法各自的优缺点,研究了线性、指数和数据驱动三种不同阈值模型的特性。通过模拟和实际算例对比分析了压缩感知地震数据重建过程中上述三个关键因素的影响,得到了三方面的重要认识和结论,为在实际地震数据重建中选择上述因素提供了可靠依据和现实建议。
