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Research of Observation Environment Impacting on the Strong-motion Records

Author: ChenGuangTao
Tutor: WenRuiZhi
School: China Seismological Bureau, Institute of Engineering Mechanics
Course: Structural Engineering
Keywords: Artificial boundary Local site topography Soil - structure interaction Strong motion observation room Base pier Strong motion records
CLC: P315
Type: Master's thesis
Year: 2010
Downloads: 18
Quote: 0
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Abstract


\the distance between the valley with tall buildings should be greater than the height and length of the building . However, with the development of urban planning and the construction of large-scale structure of some stations where station sites can not meet the requirements of the \above, some in the valley sides , and some relatively flat topography, but the distance is very small and the large - scale structure and compared so strong motion records obtained free venue may appear larger role in zoom in or out . This article as a starting point , select is located in Sichuan Province earthquake stations for example , combining captured on May 12, 2008 Wenchuan 8.0 earthquake strong motion records and stations within 500 meters of the structure damage investigation , numerical simulation , vertically incident SV wave under observation environment of strong ground motion records mainly from the following aspects : ( 1 ) local venue topographic effect of the strong motion records . The Shifang octagonal valley topography of the finite element model , consistent input method Analysis of changes with the peak to the the Valley edge of the horizontal distance increases ground acceleration and spectral characteristics , which fixed station of strong earthquakes in the next valley terrain site to provide theoretical basis ; ( 2 ) the impact of large-scale structure of the strong motion records . Reference the Jiangyou containing growth stage and near the signal tower of a finite element model to explore the impact of large-scale structure of its surrounding soil ground vibration dynamic action , combined with the Jiangyou containing damage survey of structures within 500 meters around the growth stage , Jiangyou containing the acceleration of growth captured records are too large . ( 3 ) strong motion observation room and its the base pier on the impact of the strong motion records . Build mathematical models in accordance with the provisions of the observation room and base pier size \impact .

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CLC: > Astronomy,Earth Sciences > Geophysics > Earth ( rock circles ) physics ( geophysics ) > Seismology
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