124-高层建筑结构设计若干问题探讨.ppt

高层建筑结构设计若干问题探讨 深圳大学建筑设计研究院 傅学怡 一 框 架 柱 剪 力 调 整 受力需要 框剪结构在小震作用下 弹性计算变形协调所得 的框架柱剪力较小 大震作用下 剪力墙 筒体及连 梁出现裂缝后 刚度退化 框架柱剪力将大大增加 抗震需要 提高结构二道防线的抗震能力 现行规范剪力调整计算原则 框架层总剪力： 第i层框架剪力调整系数: 第i层j框架柱剪力 弯矩调整: 相连第i层j框架梁梁端剪力 弯矩调整： 二 框 架 柱 轴 压 比 控 制 抗震受力延性需要 避免大震作用下框架柱压屈脆性破坏 背景之一  现行规范规定框剪结构 控制框架结构承受倾覆弯矩 ≤ 50%整体结构倾覆弯矩 背景之二  现行规范尚未提及框支框架结构承受倾覆弯矩的控制背景之三  美国 日本 台湾震害表明 带转换层结构主要破坏形态为大震 作用下筒体剪力墙连梁开裂后 框支柱承受轴力过大 压屈破 坏 地基基础设计控制的要素 控制长期重力荷载作用下地基基础的变形及其差异变形 满足重力荷载水平荷载组合作用下地基基础承载能力要求 Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use Fablon correctly and efficiently Fablon consider geometrical non-linear effects automaticallyin the analysis, it is necessary to review the analysis in order to use