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首页> 美国政府科技报告 >Seismic Retrofit of Existing Concrete Frame Structures Using Viscoelastic DampingDevices: A Research-in-Progress Update
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Seismic Retrofit of Existing Concrete Frame Structures Using Viscoelastic DampingDevices: A Research-in-Progress Update

机译：利用粘弹性阻尼装置对现有混凝土框架结构进行抗震改造：一项正在进行的研究

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The U.S. Army and Air Force have large inventories of concrete frame buildingsbuilt before the 1971 San Francisco earthquake, when seismic provisions in U.S. building codes were enhanced. Consequently, many of these buildings may not safely withstand the ground motions associated with large intensity earthquakes. The U.S. Army Construction Engineering Research Laboratories (USACERL) has developed a program to provide improved technologies for mitigating seismic hazards in older military buildings. This study investigated the effectiveness of a nonintrusive rehabilitation technique involving the addition of viscoelastic damping devices to a concrete structure. A one-third scale model of a concrete building was built and placed on the USACERL shaking table. The building was earthquake-tested using two sizes of dampers, and with no dampers in place. Preliminary observations showed that the model with dampers sustained only minimal damage. More detailed analysis continues.

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