Practical study on structural performance index considering human performance limit in buildings

考虑建筑人体性能极限的结构性能指标实用研究

基本信息

批准号：
17360264
负责人：
OTANI Shunsuke
金额：
$ 9.91万
依托单位：
Chiba University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2005
资助国家：
日本
起止时间：
2005 至 2007
项目状态：
已结题

项目摘要

We have paid attention with indoor human response and evacuation action in the strong ground motion. The evacuation action does not mean refuge from the building, but means hiding under the table or turning off the kitchen stove, for example. The reason why we paid attention with the evacuation action was that the safety of human inside the buildings was more important than the safety of the buildings itself. The concept might lead us to the situation that the structural performance could represent with the ease of evacuation action. We developed wire-driven long stroke shaking table, because long period ground motion is more important to consider with off shore huge earthquakes. This table is driven by wire connected with dynamic actuator and its displacement is increased by 6 sets of tackles and 13 times of actuator's deformation, theoretically. It could be said that high frequency floor response causes strong anxiety for indoor people. Low frequency floor response cause stagger for indoor people proportional with velocity in the range of 1.0 s to 3.3 s. For longer period than 3.3 s, it seems proportional with acceleration. After the analysis with motion capture system, the authors got unsteadiness indices and one of them (index using the record of 1.6 s) has very strong correlation with action difficulty. After the analytical study on structural system with connected vibration control and base isolation system, we got the preferable floor response for performance-based design.

我们在室内的人类反应和疏散行动中关注了强烈的地面运动。例如，撤离行动并不意味着建筑物的避难所，而是意味着隐藏在桌子下面或关闭厨房炉灶。我们关注疏散行动的原因是，建筑物内人的安全比建筑物本身的安全更为重要。这个概念可能会导致我们遇到结构性绩效的情况，可以轻松撤离行动。我们开发了电线驱动的长冲程摇桌，因为长时间的地面运动是在岸上巨大的地震中考虑的更为重要。该表由与动态执行器连接的电线驱动，其位移增加了6组铲球和执行器变形的13倍。可以说，高频响应会给室内人员带来强烈的焦虑。低频地板响应会导致室内人士的错失，速度为1.0 s至3.3 s的速度。比3.3 s更长的时间，它似乎与加速度成正比。在对运动捕获系统进行分析后，作者获得了不稳定指数，其中一个（使用1.6 s的索引）与动作难度具有非常强的相关性。在对结构系统进行了连接振动控制和基础隔离系统的分析研究之后，我们获得了基于性能设计的优选地板响应。