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Seismic response of large-span spatial structures under multi-support and multidimensional excitations including rotational components
- Source :
- Earthquake Engineering and Engineering Vibration. 20:141-159
- Publication Year :
- 2021
- Publisher :
- Springer Science and Business Media LLC, 2021.
-
Abstract
- To achieve rational and precise seismic response predictions of large span spatial structures (LSSSs), the inherent non-uniformity and multidimensionality characteristics of earthquake ground motions should be properly taken into consideration. However, due to the limitations of available earthquake stations to record seismic rotational components, the effects of rocking and torsional earthquake components are commonly neglected in the seismic analyses of LSSSs. In this study, a newly developed method to extract the rocking and torsion components at any point along the area of a deployed dense array from the translational earthquake recordings is applied to obtain the rotational seismic inputs for a LSSS. The numerical model of an actual LSSS, the Dalian International Conference Center (DICC), is developed to study the influences of multi-support and multidimensional excitations on the seismic responses of LSSSs. The numerical results reveal that the non-uniformity and multidimensionality of ground motion input can considerably affect the dynamic response of the DICC. The specific degree of influence on the overall and local structural displacements, deformations and forces are comprehensively investigated and discussed.
- Subjects :
- Ground motion
021110 strategic, defence & security studies
Dense array
Mechanical Engineering
0211 other engineering and technologies
Torsion (mechanics)
020101 civil engineering
02 engineering and technology
Building and Construction
Geotechnical Engineering and Engineering Geology
Span (engineering)
Physics::Geophysics
0201 civil engineering
Point (geometry)
Seismology
Geology
Civil and Structural Engineering
Subjects
Details
- ISSN :
- 1993503X and 16713664
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- Earthquake Engineering and Engineering Vibration
- Accession number :
- edsair.doi...........5b3570bb8060216f511fd83d76dd35e7