Blind Prediction of the Response of the Hualien Model to Forced Vibration Tests

9315680 Luco这个研究项目是为了响应验证数学模型和计算机代码的关键需求，这些模型和计算机代码用于计算重要结构在结构与周围土壤之间发生重大相互作用的情况下的动力响应。本案例通过对台湾花莲核电站大型模型反应堆安全壳结构强制振动试验时的动力响应进行“盲”预测。（盲目预测是在事先不知道结果会是什么的情况下做出的预测。）这些试验是由包括电力研究所（EPRI）、核管理委员会以及台湾、日本、韩国和法国的机构在内的一个组织联盟进行的。这三个任务是：(1)在基础周围的土壤进行回填之前，将观测数据与早期对围护结构模型响应的预测进行比较，以检验所采用的计算机程序，并改进结构和土壤的数学模型。(2)对基础周围土体进行回填后结构在强制振动试验中的响应进行了盲目预测。(3)将预测结果与观测结果进行比较（EPRI将在盲预测正确记录后发布观测结果），以全面评估目前部分嵌入中等强度土壤中结构在外力作用下的动力响应建模能力。该项目的资金由核管理委员会和国家科学基金会合作提供。* * *

9315680 Luco This research project is in response to a critical need to validate the mathematical models and computer codes that are used to calculate the dynamic response of important structures for those cases in which significant interaction occurs between the structure and the surrounding soil: In this case through the "blind" prediction of the dynamic response of the Hualien, Taiwan, large-scale model nuclear reactor power plant containment structure during forced vibration tests. (A blind prediction is one in which the prediction is made without knowing in advance what the result should be.) These tests are being conducted by a consortium of organizations, including the Electric Power Research Institute (EPRI), the Nuclear Regulatory Commission, and institutions from Taiwan, Japan, Korea and France. The three tasks are: (1) Comparisons of observed data with earlier predictions for the response of the containment model, prior to backfill of the soil surrounding the foundation, are used to test the computer programs employed, and to improve the mathematical models for the structure and the soil. (2) Blind predictions are made for the response of the structure during forced vibration tests, after backfill of the soil surrounding the foundation. (3) The prediction are compared with observations (which are to be released by EPRI only after the blind predictions have been properly recorded) for an overall assessment of the current capability to model the dynamic response of structures partially embedded in medium strength soils and subjected to external forces. Funding for this project is a collaboration between the Nuclear Regulatory Commission and the National Science Foundation. ***