| DOI: | 10.2172/1235205
|
| 报告号: | INL/EXT--15-35687
|
| 报告题名: | Light Water Reactor Sustainability Program Advanced Seismic Soil Structure Modeling |
| 作者: | Bolisetti, Chandrakanth; Coleman, Justin Leigh
|
| 出版年: | 2015
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| 发表日期: | 2015-06-01
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| 总页数: | 27
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| 国家: | 美国
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| 语种: | 英语
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| 英文关键词: | seismic
; soil structure
|
| 中文主题词: | 土壤结构
; 铅
; 地震
; 可持续性
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| 主题词: | SOIL STRUCTURE
; LEAD
; EARTHQUAKES
; SUSTAINABILITY
|
| 英文摘要: | Risk calculations should focus on providing best estimate results, and associated insights, for evaluation and decision-making. Specifically, seismic probabilistic risk assessments (SPRAs) are intended to provide best estimates of the various combinations of structural and equipment failures that can lead to a seismic induced core damage event. However, in some instances the current SPRA approach has large uncertainties, and potentially masks other important events (for instance, it was not the seismic motions that caused the Fukushima core melt events, but the tsunami ingress into the facility). SPRAâs are performed by convolving the seismic hazard (this is the estimate of all likely damaging earthquakes at the site of interest) with the seismic fragility (the conditional probability of failure of a structure, system, or component given the occurrence of earthquake ground motion). In this calculation, there are three main pieces to seismic risk quantification, 1) seismic hazard and nuclear power plants (NPPs) response to the hazard, 2) fragility or capacity of structures, systems and components (SSC), and 3) systems analysis. Two areas where NLSSI effects may be important in SPRA calculations are, 1) when calculating in-structure response at the area of interest, and 2) calculation of seismic fragilities (current fragility calculations assume a lognormal distribution for probability of failure of components). Some important effects when using NLSSI in the SPRA calculation process include, 1) gapping and sliding, 2) inclined seismic waves coupled with gapping and sliding of foundations atop soil, 3) inclined seismic waves coupled with gapping and sliding of deeply embedded structures, 4) soil dilatancy, 5) soil liquefaction, 6) surface waves, 7) buoyancy, 8) concrete cracking and 9) seismic isolation The focus of the research task presented here-in is on implementation of NLSSI into the SPRA calculation process when calculating in-structure response at the area of interest. The specific nonlinear soil behavior included in the NLSSI calculation presented in this report is gapping and sliding. Other NLSSI effects are not included in the calculation. The results presented in this report document initial model runs in the linear and nonlinear analysis process. Final comparisons between traditional and advanced SPRA will be presented in the September 30th deliverable. |
| URL: | http://www.osti.gov/scitech/servlets/purl/1235205
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| Citation statistics: |
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| 资源类型: | 研究报告
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/41855
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| Appears in Collections: | 过去全球变化的重建
影响、适应和脆弱性
科学计划与规划
气候变化与战略
全球变化的国际研究计划
气候减缓与适应
气候变化事实与影响
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| File Name/ File Size |
Content Type |
Version |
Access |
License |
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| 1235205.pdf（1146KB） | 研究报告 | -- | 开放获取 | | View
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| Recommended Citation: | |
Bolisetti, Chandrakanth,Coleman, Justin Leigh. Light Water Reactor Sustainability Program Advanced Seismic Soil Structure Modeling. 2015-01-01.
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