MRI: Acquisition of a Shake Table for Research on Seismic Stability of Rock Masses

MRI：采集振动台用于研究岩体的地震稳定性

• 批准号: 1429807
• 负责人: Mary MacLaughlin
• 金额: $ 31.4万
• 依托单位: Montana Technological University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2014
• 资助国家: 美国
• 起止时间: 2014-06-01 至 2019-05-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1429807&HistoricalAwards=false
• 关键词: MRI; Acquisition; Shake; Table; Research

This Major Research Instrumentation (MRI) award is for the acquisition of a one-ton capacity shake table to be used predominately for research on the stability of rock boulders and slopes during seismic loading. As evidenced by the large number of structures destroyed and the number of people killed and injured during the Christchurch series of earthquakes, rockfalls and rock slides are serious potential dangers during earthquakes. The shake table will be used to investigate the mechanisms causing rock falls and slides with the objectives of identifying potential hazardous areas and developing methods of mitigating these hazards. Additionally, the shake table will be used for research on methods of isolating structures from seismic ground motion through base isolation techniques.A one-ton shake table will be acquired. The shake table will be delivered with the equipment to allow 1-D shaking, but could be expanded to allow 2-D shaking in the future. A unique feature, designed to allow data collection involving systems of multiple rock blocks, is a high-speed side-view video camera synched to the machine control system. Historically, a significant volume of shake table research has been done in the fields of structural engineering and structural dynamics, and soil mechanics and (soil) slope stability; much less has been done using rock or rock-like materials, as proposed here. Research activities to be enabled by the shake table include: 1) Response of Blocky Rock Systems to Seismic Loads, 2) Use of Precarious Blocks to Provide Estimates of Historic Shaking, and 3) Development/Testing of Inexpensive Infrastructure Base Isolation Systems, among others. The shake table will significantly enhance the research capabilities of Montana Tech, a primarily undergraduate institution. Use of the shake table will be incorporated into labs in two undergraduate engineering courses.

该重大研究仪器 (MRI) 奖项用于购买一吨级振动台，主要用于研究地震荷载期间巨石和斜坡的稳定性。 基督城系列地震中大量建筑物被毁、人员伤亡表明，落石和滑坡是地震中严重的潜在危险。 振动台将用于研究导致岩石坠落和滑坡的机制，目的是识别潜在危险区域并制定减轻这些危险的方法。 此外，该振动台还将用于研究通过基础隔震技术将结构与地震动隔离的方法。将购买一台一吨级的振动台。 振动台将随设备一起提供，以允许一维振动，但将来可以扩展以允许二维振动。一个独特的功能是与机器控制系统同步的高速侧视摄像机，旨在允许涉及多个岩石块系统的数据收集。 历史上，在结构工程和结构动力学、土力学和（土）坡稳定性等领域进行了大量的振动台研究；正如此处所提议的，使用岩石或类岩石材料所做的工作要少得多。振动台支持的研究活动包括：1) 块状岩石系统对地震荷载的响应，2) 使用不稳定块体来提供历史震动估计，以及 3) 廉价基础设施基础隔离系统的开发/测试等。 摇床将显着增强蒙大拿理工学院（主要是本科院校）的研究能力。 振动台的使用将被纳入两门本科工程课程的实验室中。