针对地震模拟与减灾的SimCenter计算框架
SimCenter Computational Framework for Simulating and Mitigating the Effects of Earthquakes
Mahin, S.A., Deierlein, G.G., Govindjee, S., Lowes, L.N., Kareem, A., Crittenden, C., McKenna, F., Schoettler, M.
Proceedings of the 11th National Conf. in Earthquake Engrg., Earthquake Engineering Research Institute, Los Angeles, CA. 2018
SimCenter区域震害模拟的演示视频
摘要
美国国家科学基金会资助的自然灾害工程研究基础设施（NHERI）SimCenter正在研发系列技术。该技术能提供计算建模和仿真软件工具包、用户支持和必要的教育材料，以提升（科研工作者）模拟自然灾害对土木基础设施影响的能力。SimCenter的方法是开发一系列软件技术，该技术可以完美集成诸多拥有高性能计算平台和数据存储库的仿真软件。本文简要回顾了SimCenter的计划和方法——通过开发计算工作流试验平台来模拟7级地震对旧金山湾区大量建筑物的破坏效应。
(The NSF-funded Natural Hazards Engineering Research Infrastructure (NHERI) SimCenter is developing technologies to provide access to computational modeling and simulation software tools, user support, and educational materials needed to advance the capability to simulate the impact of natural hazards on civil infrastructure. The SimCenter’s approach is to create software technologies that can seamlessly integrate a broad array of simulation software with high performance computing platforms and data repositories. This paper briefly reviews the SimCenter’s plans and approach through the development of a computational workflow testbed to simulate the damaging effects of a M7 earthquake scenario on a large inventory of buildings in the San Francisco Bay Area.)
引言
计算地震仿真工作流程
如图1所示，计算区域模拟将单个设施与基础设施网络的详细性能分析和地震地面变形与震动的高分辨率仿真相结合。此方法的整体概念与HAZUS以及其他区域性损失评估软件没有什么不同。只是所提出的方法旨在巨大的（dramatically）提高地震灾害仿真模拟的分辨率和真实感，并对建筑物和土木基础设施的震后的损坏和性能进行分析，并与城市规划工具相整合。借助（through）这些高分辨率的模型，上述仿真模拟除可以进行财务损失评估外，还可以为制定政策、采取工程措施和其他步骤提供参考信息，从而提高社区的韧性。
(As illustrated in Figure 1, the computational regional simulations combine detailed performance based analyses of individual facilities and infrastructure networks with high-resolution simulations of earthquake ground deformations and shaking. The overall concept is not unlike that of HAZUS or other regional loss assessment software, except that the proposed methods aim for dramatically higher resolution and realism in earthquake hazard simulations, analyses of damage and performance of buildings and civil infrastructure, and integration with urban planning tools. Through these higher resolution models, these simulations can move beyond financial loss assessment to informing the development of policies, engineering measures and other steps to improve community resilience.)
图1 区域地震模拟的组成部分
Fig. 1 Components of Regional Earthquake Simulation
旧金山湾区试验台模拟
图2 旧金山湾区Hayward断层地震模拟
Fig. 2 Illustration of San Francisco Bay Area Hayward Fault Earthquake Simulation
图3 Urbansim模拟结果的地块级别查询
Fig. 3 Parcel Level Interrogation of Simulation Results in UrbanSim
正在进行的研究与开发
本文描述的区域地震仿真试验台旨在作为概念证明，可以帮助开发工作流工具以及展示工作流在实际地震场景中的应用。这个测试平台是一个手段，目的是帮助增强地震工程、城市规划和社会科学研究人员的计算工作流工具，使他们能够进行有意义的多学科研究，有助于提高社区韧性。
(The regional earthquake simulation testbed described in this paper is intended as a proof of concept to help develop the workflow tools and demonstrate their application to a realistic earthquake scenario. This testbed is one means to an end to help empower earthquake engineering, urban planning and social-science researchers with computational workflow tools that will enable meaningful multi-disciplinary research that will contribute to improving community resilience.)
致谢
参考文献
[1] Xiong, C., Lu, X., Lin, X., Xu, Z., Ye, L. (2017), “Parameter Determination and Damage Assessment for THA-Based Regional Seismic Damage Prediction of Multi-Story Buildings,” Jl. Of Eq. Engrg., V 21, Iss.3, pp. 461-485.
[2] Xiong, C., Lu, X., Hori, M., Guan, H., Xu, Z. (2015), “Building seismic response and visualization using 3D urban polygonal modeling,” Automation in Construction, V55, pp. 25-24.
本文翻译：郑哲
场地-城市耦合弹塑性分析+神威太湖之光+无人机 | 三项黑科技助力新北川县城震害预测
美国NSF SimCenter+清华城市弹塑性分析=旧金山184万建筑地震模拟
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