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

该奖项为科罗拉多大学博尔德分校(CU)提供资金，以提升小乔治·E·布朗的实验能力。地震工程模拟网络(NEES)用于结构系统场地地震性能评估的快速混合测试平台，将由NEES Consortium，Inc.在2005财年至2014财年作为国家共享设施运营。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、数据采集和联网系统。根据该合同，将为该现场购买以下设备：数据采集单元、LVD组件和反应墙系统。为了充分利用快速混合测试技术，提出了一种双向反应墙系统。反应墙系统将由4.1米(13.5英尺)长的主反应墙组成。长3.66米(12英尺)高墙和两面2.29米(7.5英尺)高的垂直方向的小墙长3.66米(12英尺)高的。目前的DAQ只允许48个通道与样品对接。一个补充的数据采集单元将提供额外的56个数据通道和16个LVDT(线性可变差动变压器)。这种升级的设备，包括反应墙，将在NEES现场充分利用FHT的能力。地震工程研究界将通过科罗拉多州立大学NEES设施向NEES联盟提供这种设备。该奖项由NSF NEES重大研究设备和设施建设(MREFC)项目资助，是国家减少地震灾害计划(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).