RAPID: U.S. Instrumentation and Data Processing of a Large-Scale Experiment on Soil-Structure Interaction of Underground Structures on the E-Defense Shake Table in Miki, Japan

当位于地震活跃区时，特大城市地下系统的结构和岩土性能以及震后功能性非常令人关注。通常，地下系统由隧道、竖井、管道系统、公用设施或停车场/购物中心的组合组成，通过柔性或刚性连接进行耦合。2012年2月在日本三木的E-Defense振动台上进行的动荷载作用下地下结构的大规模土-结构相互作用试验为研究安装在层状土容器中的隧道-竖井系统在一系列二维地震动作用下的局部和全局行为提供了独特的机会。本合同的目的是提供安装在层状土壤容器中试样内部和周围的补充仪器，以测量工程响应量，例如动态水平压力的垂直分布、横向循环位移、轴向和横向应变分布、和相互作用（力和位移）。测量数据旨在帮助验证和改善现有的动态土壤-通过在各种地面运动下进行独特的大规模测试，构建相互作用模型并帮助填充数据库。测量将通过压力传感器、应变仪、线性可变差动Transformer传感器和加速度计提供。 在2010年和2011年期间，日本和美国研究人员积极合作规划了这项研究和测试样本。 将这些测试的额外仪器带到日本的机会将使成功整合和改进美国目前的仪器计划成为宝贵的经验教训，并将进一步加强日本和美国之间的研究合作。 来自补充仪器的数据将通过乔治E.小布朗网络地震工程（NEES）项目仓库（http：www.nees.org），并将在地震工程界的研究人员和执业工程师有价值。该奖项是国家减少地震灾害计划（NEHRP）的一部分。

The structural and geotechnical performance and post-earthquake functionality of underground systems in megacities are of great concern when located in an active seismic region. Typically, underground systems consist of combinations of tunnels, vertical shafts, pipeline systems, utility facilities, or parking/shopping centers coupled via flexible or rigid connections. The large-scale, soil-structure interaction experiment of underground structures under dynamic loading conducted on the E-Defense shake table in Miki, Japan, in February 2012 provides the unique opportunity to study local and global behavior of tunnel-shaft systems installed in a laminar soil container under a series of two-dimensional ground motions. The objective of this award is to provide supplemental instrumentation to be installed in and around the test specimen in the laminar soil container to measure engineering response quantities such as the vertical distribution of dynamic horizontal pressures, lateral cyclic displacements, axial and transverse strain distributions, and the interaction (forces and displacements) of adjacent systems.The measured data is intended to help validate and improve existing dynamic soil-structure interaction models and assist in filling the database via a unique large-scale test under various ground motions. Measurements will be provided through pressure sensors, strain gauges, linear variable differential transformer transducers, and accelerometers. Planning for this research and test specimen has been an active collaboration between Japanese and U.S. researchers during 2010 and 2011. The opportunity of bringing additional instrumentation for these tests to Japan will enable valuable lessons on successfully integrating and improving current instrumentation programs in the United States and will further strengthen research collaboration between Japan and the United States. The data from the supplemental instrumentation will be archived and broadly disseminated via the George E. Brown, Jr. Network for Earthquake Engineering (NEES) Project Warehouse (http://www.nees.org) and will be valuable for researchers and practicing engineers in the earthquake engineering community. This award is part of the National Earthquake Hazards Reduction Program (NEHRP).