Fast Hybrid Test Platform for Seismic Performance Evaluation of Structural Systems

用于结构系统抗震性能评估的快速混合测试平台

• 批准号: 0086592
• 负责人: P. Benson Shing
• 金额: $ 198.36万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Cooperative Agreement
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-01-01 至 2004-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0086592&HistoricalAwards=false
• 关键词: Fast; Hybrid; Test; Platform; Seismic

The George E. Brown, Jr. Network for Earthquake Engineering Simulation (NEES) Program is a project funded under the NSF Major Research Equipment Program. This cooperative agreement, under the NEES Program, establishes a NEES fast hybrid test platform for seismic response simulation of structural components, subassemblages, and systems at the University of Colorado at Boulder, Colorado. The University of Colorado at Boulder will specify, develop, purchase/upgrade, construct, install, commission, and operate a fast hybrid test system consisting of high speed actuators, digital controller, data acquisition system, computers, and simulation software for full size and large-scale models of walls, columns, frames and subassemblies under experimental hybrid testing at loading rates between 10% and 100% of that experienced during an earthquake. This capability is one to two orders of magnitude higher than currently available in pseudodynamic tests. This equipment will be operational by 2004 or earlier and will be managed as a national shared-use NEES equipment site, with teleobservation and teleoperation capabilities, to provide new earthquake engineering research testing capabilities for large structural systems through 2014. This NEES equipment site will be connected to the NEES collaboratory through the CU Engineering Center, which already has Gigabit Ethernet connection. Shared-use access and training will be coordinated through the NEES Consortium award. This award is an outcome of the peer review of proposals submitted to program solicitation NSF 00-6, NEES: "Earthquake Engineering Research Equipment." The following equipment is provided under this award: (1) One high-speed actuator, 220 kip load capacity, +5 in stroke, 250 gpm servo valve, maximum velocity of 9 in/sec; (2) Upgrade two existing 110 kip, +5 in. stoke actuators with 250 gpm servo valves to attain a maximum velocity of 18 in/sec; (3) High-performance digital servo-controller with three control channels and three-variable control capability; (4) High-speed data acquisition system with 32 data channels; (5) Three digital displacement transducers; (6) Ten analog displacement transducers; (7) Three accelerometers with frequency range up to 500 Hz; (8) Three personal computers for numerical simulation, data processing using Matlab and C++ complier, and data display/teleobservation connection; (9) Expansion of existing data acquisition system to accommodate teleobservation, teleoperation, teletransmission, and telestorage; and (10) Equipment for teleobservation and teleoperation capabilities so that experiments on the equipment will be observable and controllable via high performance network connections. The core of the facility is the digital controller, the computer where the dynamics of the structure being evaluate is modeled and numerical computation is performed to solve the equations of motion, and the software (to be developed as part of this project) which controls and links the physical and mathematical subassemblages. Sophisticated actuator control algorithms will be developed as a part of this project and they are the keys to project success. The facility would be the only one of its kind in the United States (multiple actuators) with full substructuring capability. It would serve as the test bed for future large scale, multi-degree-of-freedom fast hybrid testing systems. The University has committed $190,685 for the control room construction and refurbishing work, equipment purchase and partial support for a laboratory technician from 2001 through 2004. The University will integrate this fast hybrid testing system into its undergraduate and graduate curricula, and it will promote the use of the results by other educational institutions mainly through the use of the World Wide Web. Further, the experimental observations obtained from the test will be incorporated in an ongoing NSF sponsored K-12 educational program. The University will also provide training opportunities for outside researchers through seminars and workshops.

小乔治·E·布朗地震工程模拟网络 (NEES) 计划是 NSF 重大研究设备计划资助的一个项目。 该合作协议根据 NEES 计划，在科罗拉多州博尔德市的科罗拉多大学建立了一个 NEES 快速混合测试平台，用于结构部件、组件和系统的地震响应模拟。 科罗拉多大学博尔德分校将指定、开发、购买/升级、建造、安装、调试和运行一个快速混合测试系统，该系统由高速执行器、数字控制器、数据采集系统、计算机和全尺寸和模拟软件组成。墙体、柱子、框架和组件的大型模型，以地震期间的 10% 到 100% 的加载速率进行实验混合测试。 这种能力比目前伪动力测试中可用的能力高一到两个数量级。 该设备将于 2004 年或更早投入运行，并将作为国家共享 NEES 设备站点进行管理，具有远程观测和远程操作能力，到 2014 年为大型结构系统提供新的地震工程研究测试能力。该 NEES 设备站点将通过CU工程中心连接到NEES协作实验室，该中心已经拥有千兆以太网连接。 共享使用和培训将通过 NEES 联盟奖项进行协调。 该奖项是对提交给 NSF 00-6、NEES 项目征集的提案进行同行评审的结果：“地震工程研究设备”。 该奖项提供以下设备： (1) 一台高速执行器，220 kip 负载能力，+5 行程，250 gpm 伺服阀，最大速度 9 英寸/秒； (2) 升级两个现有的 110 kip、+5 英寸冲程执行器，配备 250 gpm 伺服阀，以获得 18 英寸/秒的最大速度； (3)高性能数字伺服控制器，具有三个控制通道和三变量控制能力； (4) 32个数据通道的高速数据采集系统； (5) 三个数字位移传感器； (6) 十个模拟位移传感器； (7) 三个加速度计，频率范围高达500 Hz； (8) 3台个人计算机，用于数值模拟、Matlab和C++编译器的数据处理、数据显示/遥测连接； (9) 扩展现有数据采集系统，以适应远程观测、远程操作、远程传输和远程存储； (10)具有远程观测和远程操作能力的设备，以便通过高性能网络连接对设备上的实验进行观测和控制。该设施的核心是数字控制器、对被评估结构的动力学进行建模并进行数值计算以求解运动方程的计算机，以及控制和控制的软件（将作为该项目的一部分开发）。链接物理和数学子组合。 复杂的执行器控制算法将作为该项目的一部分进行开发，它们是项目成功的关键。 该设施将是美国同类设施中唯一具有完整基础结构能力的设施（多个执行器）。 它将作为未来大规模、多自由度快速混合测试系统的测试平台。该大学已承诺投入 190,685 美元，用于 2001 年至 2004 年控制室建设和翻新工作、设备采购以及对实验室技术人员的部分支持。该大学将把这种快速混合测试系统纳入其本科生和研究生课程，并将推广使用其他教育机构主要通过使用万维网来获取结果。 此外，从测试中获得的实验观察结果将纳入正在进行的 NSF 赞助的 K-12 教育计划中。 该大学还将通过研讨会和讲习班为外部研究人员提供培训机会。