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首页> 外文期刊>Earthquake Engineering & Structural Dynamics >Disorder and damage of base-isolated medical facilities when subjected to near-fault and long-period ground motions
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Disorder and damage of base-isolated medical facilities when subjected to near-fault and long-period ground motions

机译：遭受近断层和长时间地面运动时，与基地隔离的医疗设施的故障和损坏

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摘要

A series of full-scale shaking table tests were conducted at E-Defense for a four-story base-isolated hospital. The operation room in the specimen was chosen for detailed examination of its disorder and damage during large ground motions. It was arranged with various medical appliances in as a realistic manner as possible, and the appliances were characterized by casters installed at the bottom to ensure mobility. Two types of ground motion, the near-fault ground motion and long-period ground motion, were adopted, and the responses of the appliances were recorded using the motion capture technique. Thanks to the base isolation, the floor response was greatly reduced, and no disorder or damage was observed in the operation room except for the case when subjected to a long-period ground motion. In this case, the unlocked appliances moved seriously (by more than 3 m), and collisions occurred between the appliances and between appliances and the surrounding wall. The force of collision reached 36 kN, which is sufficient to injure a person. The acceleration due to collision was as high as 10 g, which is far beyond what can be tolerated by acceleration-sensitive appliances. It is notable that such large motion was not observed once the appliances were locked. The test was also carried out for the corresponding fixed-base structure. Among all cases in the experiment, by far the most serious damage occurred in the fixed-base structure when subjected to the near-fault ground motion, clearly because the floor response was significantly amplified from the ground motion.
机译：在E-Defense对一家四层基础隔离医院进行了一系列全面的振动台测试。选择标本中的手术室来详细检查其在大地面运动中的混乱和损坏。它尽可能以切合实际的方式配备了各种医疗设备，并且这些设备的特点是在底部安装了脚轮以确保活动性。采用了两种类型的地震动，即近断层地震动和长周期地震动，并使用运动捕捉技术记录了设备的响应。由于基座的隔离，地板响应大大降低了，除了长时间进行地面运动外，在手术室中没有观察到混乱或损坏。在这种情况下，未锁定的设备会严重移动（超过3 m），并且设备之间以及设备与周围墙壁之间会发生碰撞。碰撞力达到36 kN，足以伤害一个人。碰撞引起的加速度高达10 g，远远超出了对加速度敏感的设备所能承受的范围。值得注意的是，一旦锁定设备，就不会观察到如此大的运动。还对相应的固定底座结构进行了测试。在实验的所有情况下，迄今为止，最严重的破坏发生在近断层地震动下的固定基础结构中，这显然是因为地面响应已从地震动中大大放大了。

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