Enhancement of the Fast Hybrid Test System at the University of Colorado

该奖项为科罗拉多-博尔德大学（CU）提供资金，以提升乔治E.小布朗地震工程模拟网络（NEES）用于结构系统场地抗震性能评估的快速混合测试平台，将由NEES联合体公司运营，2005 - 2014财政年度作为国家共享使用设施。 CU NEES现场的主要设备包括：（I）液压设备;（II）仪表包;（III）控制、计算、数据采集和网络系统。根据该合同，将为该现场购买以下设备：数据采集装置; LVD包;和反应墙系统。为了充分利用快速混合测试（FHT）技术，提出了一种双向反应墙系统。反应墙系统将包括一个4.1米（13.5英尺）的主反应墙。长3.66米（12英尺）高和两个较小的墙在正交方向，是2.29米（7.5英尺）。长3.66米（12英尺）高.目前的DAQ仅允许48个通道与样品连接。一个辅助数据采集单元将提供额外的56个数据通道和16个LVDT（线性可变差分变压器）。包括反应墙在内的升级设备将充分利用FHT的能力，使其在NEES现场发挥真正的潜力。该设备将通过NEES联盟公司提供给地震工程研究界，CU需要设施。 该奖项由NSF NEES主要研究设备和设施建设（MREFC）项目资助，是国家地震灾害减少计划（NEHRP）的一部分。

Abstract0429276WillamThis award provides funding to the University of Colorado - Boulder (CU), to upgrade the experimental capabilities of the George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Fast Hybrid Test Platform for the Seismic Performance Evaluation of Structural Systems site that will be operated by NEES Consortium, Inc., as a national shared use facility during FY 2005 - FY 2014. The major equipment at the CU NEES site includes: (I) hydraulic equipment; (II) instrumentation package; (III) control, computation, data acquisition, and networking systems.Under this award, the following equipment will be purchased for this site: Data-Acquisition unit; LVD package; and a Reaction Wall system. To fully utilize Fast Hybrid Testing (FHT) techniques, a bi-directional reaction-wall system is proposed. The reaction-wall system will consist of a main reaction wall that is 4.1-m (13.5-ft.) long and 3.66-m (12-ft.) tall and two smaller walls in the orthogonal direction that are 2.29-m (7.5-ft.) long and 3.66-m (12-ft.) tall. The current DAQ allows only 48 channels to interface with the specimen. A supplemental data-acquisition unit will provide additional 56 data channels, and 16 LVDTs (Linear Variable Differential Transformers). This upgraded equipment including the reaction wall will utilize the FHT capabilities to its true potential at this NEES site. This equipment will be available to the earthquake engineering research community through the NEES Consortium, Inc., CU NEES facility. This award is funded by the NSF NEES Major Research Equipment and Facilities Construction (MREFC) project and is a component of the National Earthquake Hazards Reduction Program (NEHRP).