Study on the seismic behaviour of upper masonry floor with variable stiffness for multi-story brick structures with bottom-frame based on finite element simulation

Hongyu Deng; Zhonghao Zhang; Qiang ZhouBaitao SunPeiyu YingCanbin Yin

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Study on the seismic behaviour of upper masonry floor with variable stiffness for multi-story brick structures with bottom-frame based on finite element simulation

机译：Study on the seismic behaviour of upper masonry floor with variable stiffness for multi-story brick structures with bottom-frame based on finite element simulation

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摘要

The upper masonry layers of multi-story brick structures with bottom-frame were usually severely destroyed in an actual earthquake. But, it is not clear that whether the design method of equal rigidity in vertical direction of upper masonry layer is reasonable. In this paper, four contrastive models of bottom frame structures were established though ABAQUS, and the different design methods of variable vertical stiffness were used for the upper masonry layers. The seismic response results show that the upper masonry layers especially the transitional layer is severely damaged when the design method of equal rigidity in vertical direction is used. According to the principle that the stiffness of the floor in proportion to its seismic force, which can lead to uniform failure of each layer, when the upper masonry layer uses the design method of variable stiffness along vertical direction, the seismic performance of the whole structure is greatly improved.

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来源
《International journal of critical infrastructure》 |2022年第2期|128-147|共20页
作者
Hongyu Deng; Zhonghao Zhang; Qiang ZhouBaitao SunPeiyu YingCanbin Yin;
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作者单位

College of Water Conservancy and Civil Engineering, Northeast Agricultural University;

School of Civil Engineering and Architecture, Nanchang University;

Key Laboratory of Earthquake Engineering and Engineering Vibration, China Earthquake Administration, Institute of Engineering MechanicsDepartment of Construction Engineering, Dalian University of TechnologyCollege of Civil Engineering;

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正文语种英语
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关键词
bottom frame structure; variable vertical stiffness; elastic-plastic time-history analysis; seismic behaviour;

Study on the seismic behaviour of upper masonry floor with variable stiffness for multi-story brick structures with bottom-frame based on finite element simulation

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