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简述底部剪力法的适用范围,计算中如何鞭稍效应。
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简述底部剪力法的适用范围,计算中如何鞭稍效应。
时间:2021-09-17 13:04
关键词:
建筑结构抗震设计
土木建筑工程
大学试题
工学
答案解析
<p> 震中距--地面上任何一点到震中的直线距离称为震中距。<br> 适用范围:高度不超过40米,以剪切变形为主且质量和刚度沿高度分布比较均匀的结构,以及近似于单质点体系的结构,可采用底部剪力法计算。<br> 为考虑鞭稍效应,抗震规范规定:采用底部剪力法计算时,对突出屋面的屋顶间、女儿墙、烟囱等的地震作用效应,宜乘以增大系数3,此增大部分不应往下传递,但与该突出部分相连的构件应予以计入。</p>
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简述底部剪力法的适用范围,计算中如何鞭稍效应。
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