DEVELOPMENT OF THE GEORGE E. BROWN JR. NETWORK FOR EARTHQUAKE ENGINEERING SIMULATION (NEES) LARGE HIGH PERFORMANCE OUTDOOR SHAKE TABLE AT THE UNIVERSITY OF CALIFORNIA, SAN DIEGO
DEVELOPMENT OF THE GEORGE E. BROWN JR. NETWORK FOR EARTHQUAKE ENGINEERING SIMULATION (NEES) LARGE HIGH PERFORMANCE OUTDOOR SHAKE TABLE AT THE UNIVERSITY OF CALIFORNIA, SAN DIEGO
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小乔治·E·布朗的发展
DOI：
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发表时间：
2002
期刊：
影响因子：
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通讯作者：
B. Thoen
中科院分区：
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作者：
L. V. D. Einde;J. Restrepo;J. Conte;Enrique Luco;F. Seible;A. Filiatrault;A. Clark;A. Johnson;M. Gram;D. Kusner;B. Thoen
2002 年 10 月，通过小乔治·E·布朗地震工程模拟网络 (NEES) 计划，美国国家科学基金会 (NSF) 向加州大学圣地亚哥分校 (UCSD) 拨款 590 万美元，为 NEES 产品组合提供大型高性能户外振动台 (LHPOST)。 LHPOST 将是美国第一个户外且最大 (12.2 m x 7.6 m) 的振动台。由加州交通部 (Caltrans) 资助的一个大型土坑战略性地位于 LHPOST 附近，用于土壤-基础-结构相互作用 (SFSI) 测试。这些设施将用于进行大规模和全面的测试，以研究结构和岩土抗震性能问题，这些问题无法通过较小规模的测试或在准静态或伪动态条件下（包括近场地面运动下的性能）轻易推断出来。可以在 LHPOST 上进行的潜在研究包括（a）被动和半主动消能系统对建筑响应的影响，（b）运动土壤基础-结构相互作用的大规模测试，（c）核废料干燥储存桶的地震响应，包括土壤-结构相互作用和桶之间的运动相互作用，（d）建筑物的损失估计，包括其组件之间的相互作用，（e）包括学校建筑在内的全尺寸木框架建筑的地震响应(f) 建筑隔板的响应，其中分布质量的存在限制了测试仅在动态条件下进行，(g) 液化缓解机制的评估，(g) 优化浅基础以最大限度地提高运动土壤基础相互作用，以及 (h) 研究变电站互连组件（例如高压变压器套管系统）之间的复杂相互作用。此类实验将为开发、校准和验证地震工程中的预测计算工具提供独特的机会。以下论文总结了 LHPOST 的设计问题和规范。
In October 2002, through the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) program, the National Science Foundation (NSF) awarded the University of California, San Diego (UCSD) $5.9 Million to provide the NEES portfolio with a Large High Performance Outdoor Shake Table (LHPOST). The LHPOST will be the first outdoor and largest (12.2 m x 7.6 m) shake table in the United States. A large soil pit funded by the California Department of Transportation (Caltrans) has been strategically located adjacent to the LHPOST for Soil-Foundation-Structure Interaction (SFSI) testing. The facilities will be used to conduct largeand full-scale testing to investigate structural and geotechnical seismic performance issues that cannot readily be extrapolated from testing at smaller scale, or under quasi-static or pseudo-dynamic conditions, including performance under near-field ground motions. Potential research that could be carried out on the LHPOST include (a) the effects of passive and semiactive energy dissipating systems on building response, (b) large-scale testing of kinematic soilfoundation-structure interaction, (c) seismic response of nuclear waste dry storage casks, including the soil-structure interaction and the kinematic interaction between casks, (d) loss estimation of buildings, including the interaction between their components, (e) seismic response of full-scale wood-frame construction including school buildings (f) response of building diaphragms, where the presence of a distributed mass constrains the testing to be performed solely under dynamic conditions, (g) assessment of liquefaction mitigation mechanisms, (g) optimization of shallow foundations to maximize kinematic soilfoundation interaction, and (h) the study of the complex interaction between interconnected components of electrical substations, such as high-voltage transformer-bushing systems. Such experiments will present unique opportunities to develop, calibrate, and validate predictive computational tools in earthquake engineering. The following paper summarizes design issues and specifications for the LHPOST.