[1]ZHANG Wei,SUN Rui,YUAN Xiaoming.Seismic Response Analysis of a Coral Island in Sea Area[J].Journal of Seismological Research,2020,43(03):576-581.
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Seismic Response Analysis of a Coral Island in Sea Area
Journal of Seismological Research[ISSN 1000-0666/CN 53-1062/P] Volume:
43
Number of periods:
2020 03
Page number:
576-581
Column:
Public date:
2020-09-14
- Title:
- Seismic Response Analysis of a Coral Island in Sea Area
- Keywords:
- coral island; earthquake in the sea area; site effect; fluid-solid coupling; seawater action
- CLC:
- TU435
- DOI:
- -
- Abstract:
- Based on the actual engineering geological profile of a coral island in the South China Sea,a two-dimensional island model with seawater-island-seismic coupling is established.The FLAC finite difference method is used to analyze the seismic response of islands when horizontal input seafloor ground motions are considered in the two cases.The results show that:①The PGA amplification effect at lime-sand island is significant,and the PGA amplification effect at the corner point of the lime-sand island and outer reef have achieved a maximum or minimum value; ②Compared with ignoring seawater effects,after considering the fluid-solid coupling of seawater and the dynamic effects of seawater outside the islands,the seismic response of the islands show a flat or decreasing trend; ③The amplification factor of the horizontal acceleration of the island decrease with the increase of peak value of the input earthquake and generally increase as the decrease of the sand layer depth.
- References:
- -
- Similar References:
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Last Update:
2020-09-18