期刊文献+
共找到3篇文章
< 1 >
每页显示 20 50 100
中震作用下框架结构截面约束的维修失效相关性分析
1
作者 李广慧 郭院成 王东炜 《河南科学》 2000年第2期202-205,共4页
在定义了中震作用下结构维修失效准则的基础上 ,利用编制的钢筋混凝土框架结构非线性随机地震反应分析程序 ,研究了在役结构在中震作用下的截面维修约束失效的相关性 ,并总结出了可用于可靠性分析的相关性规律。
关键词 中震作用 框架结构 维修失效 相关性 钢筋混凝土
下载PDF
剖析建筑结构抗震设计中需要注意的问题
2
作者 谷延君 周恩津 《黑龙江水利科技》 2009年第3期108-108,共1页
文章以实际结构设计经验总结了建筑抗震设计容易出现的问题;在实际结构设计中应如何准确的理解和应用规范。
关键词 建筑抗设防分类 设计 中震作用 作用
下载PDF
Heterogeneous destruction of the North China Craton: Coupled constraints from seismology and geodynamic numerical modeling 被引量:3
3
作者 Kun WANG Liang ZHAO +1 位作者 Xiaobing XU Jianfeng YANG 《Science China Earth Sciences》 SCIE EI CAS CSCD 2018年第5期515-526,共12页
The prevailing academic view regards mantle flow and the metasomatism triggered by the subduction of the Pacific plate as the cause and mechanism for the destruction of the North China Craton(NCC). However, the geodyn... The prevailing academic view regards mantle flow and the metasomatism triggered by the subduction of the Pacific plate as the cause and mechanism for the destruction of the North China Craton(NCC). However, the geodynamic destruction process remains ambiguous, necessitating detailed information at this stage. Combining the structural images obtained by the exploration of dense seismic arrays and the geodynamic simulations inspired by numerical modeling, this paper arrives at the following conclusions: the spatial variation of the P-and S-wave velocities, as well as their velocity ratio in the mantle transition zone, are key evidences of the nonuniform dehydration of the Pacific plate, the subducted plate induces hot upwellings in the mantle transition zone(MTZ), resulting in the heterogeneous distribution of the melt/fluid beneath the craton, characterized by small scale anomalies in the seismic velocity field, and as revealed by dense seismic array observation, the heterogeneities in the upper mantle structure and deformation are the synthetic results of lithospheric strain localization and the heterogeneous distribution of the melt/fluid. It is known that the nonuniform dehydration of the Pacific slab and the heterogeneous distribution of the melt/fluid have occured in the Cenozoic. If these scenarios could have already occurred in the Early Cretaceous, their interaction with the NCC lithosphere would be the dynamic mechanism for the heterogeneous lithospheric destruction of the NCC. The inference in this study is significant for further reconciling the multidisciplinary evidences in the NCC. 展开更多
关键词 North China Craton Heterogeneity Seismic tomography Numerical modeling
原文传递
上一页 1 下一页 到第
使用帮助 返回顶部