张文福;李洋;邓云;刘迎春;邓世林;李明亮;严威;

• 1:南京工程学院建筑工程学院

• 2:东北石油大学土木建筑工程学院

摘要(Abstract)：

根据Saint-Venant扭转理论和板—梁理论,建立内置工字钢骨方钢管混凝土自由扭转的位移场、应变场及应变能计算公式;根据最小应变能原理,确定纵向位移的待定系数,获得内置工字钢骨方钢管混凝土自由扭转刚度的解析解。应用ANSYS验证理论公式的正确性,对内置工字钢骨方钢管混凝土自由扭转刚度进行扩展参数分析,包括钢骨类型、含钢率、混凝土强度等级对自由扭转刚度的影响。基于叠加法,给出内置工字钢骨方钢管混凝土自由扭转刚度简化设计公式。结果表明:有限元模拟结果良好,且最大误差不超过5.0%,验证自由扭转刚度解析解的正确性;自由扭转刚度随含钢率、混凝土强度的增大而增大;自由扭转刚度简化设计公式形式简单,易于理解,计算精度基本满足工程设计的要求。

关键词(KeyWords)：扭转刚度;内置工字钢骨方钢管混凝土;圣维南扭转理论;简化设计公式;参数分析

Abstract:

Keywords:

基金项目(Foundation):国家自然科学基金项目(51178087,51578120);; 南京工程学院校级科研基金项目(YKJ201617)

作者(Author):张文福;李洋;邓云;刘迎春;邓世林;李明亮;严威;

Email:

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