Study on the Influence of Aspect Ratio on the Seismic Response and Overturning Resistance of a New Staggered Story Isolated Structure

The aspect ratio of the structure has a significant impact on the overall stability of the ultra high-rise building. A large aspect ratio of the structure increases the risk of overturning and reduces the lateral stiffness of the structure, leading to significant tensile and compressive stresses in the isolated bearings. To study the effect of aspect ratio on the seismic response and overturning resistance of a new staggered story isolated structure, three models with different aspect ratios were established. Nonlinear time-history analysis of the three models was conducted using ETABS finite element software. The results indicate that the overturning moment and overturning resistance moment of the superstructure in the new staggered story isolated structure increase with an increasing aspect ratio. However, the increase in the overturning moment of the superstructure is much greater than the increase in the overturning resistance moment, resulting in a decrease in the overturning resistance ratio of the superstructure with an increasing aspect ratio. The overturning moment and overturning resistance moment of the substructure in the new staggered story isolated structure decrease with an increasing aspect ratio. However, the decrease in the overturning moment of the substructure is greater than the decrease in the overturning resistance moment, leading to an increase in the overturning resistance ratio of the substructure with an increasing aspect ratio. The decrease in the overturning resistance ratio of the superstructure in the new staggered story isolated structure is much greater than the increase in the overturning resistance ratio of the substructure. Therefore, as the aspect ratio of the overall structure increases, the overturning resistance ratio of the superstructure and the entire structure decreases.

Progressive Collapse Resistance of a New Staggered Story Isolated System

A new staggered isolated system developed from the mid-story isolated system is the new staggered story isolated system. There are not many studies on this structure currently. In this study, an 18-story new staggered story isolated system model is established using SAP2000. The dynamic nonlinear dynamic alternate method is used to analyze the structure against progressive collapse. Results show that the structure has good resistance to progressive collapse, and there is no progressive collapse under each working condition. The progressive collapse does not occur for the case of removing only one vertical structural member of the new staggered of isolated system. The side column has big influence on this isolated structures’ progressive collapse;the removal of vertical structural member of the isolation layer has less impact on the structure than the removal of the bottom vertical structural member. After the removing of the member, the internal force of the structure will be redistributed, and the axial force of the adjacent columns will change obviously, showing a trend of “near large and far small”.

Spatial Aesthetics, Female Perspective, and Storytelling of New Villages - On Qiao Ye's Baoshui Village

In her novel Baoshui Village,Qiao Ye narrates from a keen female perspectiveabout theawakening and transformationof contemporary rural women,portraying the great changes in rural China in the new era.The"Baoshui Village"in the novel is not only a rural space as the object of writing,but also provides a significant background against which the great changes in rural China are depicted.It also serves as an important means to advance the plot of the novel and provides a way to organize the time of the novel.In the novel,Qiao Ye connects the village and the world outside the village from the dual perspectives of the heroine Di Qingping,to create a new relationship between people and countryside,and between rural areas and cities from a perspective of totality to paint a new picture of rural China.

New Chapter in Sino-Canadian Trade Story

This year marks the 30th anniversary of the establishment of the Canada China Business Council(CCBC),a private,membership-based association that seeks to facilitate trade and investment between Canada and China. In an exclusive interview with Beijing Review reporter Chen Ran,Sergio Marchi,President of the CCBC,shares his views on the current situation and prospects for Sino-Canadian trade links. For a video presentation of the interview, please visit www.bjreview.com.

“Literary Light Cavalry”in the Main Battlefield of Targeted Poverty Alleviation--On Ouyang Qiansen's Reportage“Poverty Alleviation Trilogy”

The great social changes since China's reform and opening up have facilitated the revival and development of reportage.Life in the New Era has provided infinitely rich and valuable themes and materials for the creation of reportage.Among them,the theme of targeted poverty reduction and poverty alleviation has become the focus of reportage writing in recent years.The“Poverty Alleviation Trlogy”:In Leaf and Bloom,Listening to the Voices of the Blooming Flowers(Huafan Yemao,Qingting Huakai de Shengyin),The Sunshine of the Blissful Spring(Baode Sanchunhui),and A New Lease of Life:The Story of Wanshan(Kan Wanshan Hongbian),written by famous writer Ouyang Qiansen,is not only a self-evident breakthrough of Guizhou-themed reportage and its status within national literary circles,but is also strong evidence of the reflection on major themes and the spirit of the times through reportage,which,in this sense,is of irreplaceable significance.