基于刚接梁理论的分段虚拟横梁计算方法  

Calculation Method of Sectional Virtual Beam Based on Rigid-connected Beam Theory

作　　者：耿涛 张力文[1] 孙卓[1] 金腾飞 

机构地区：[1]广州大学土木工程学院,广东广州510006

出　　处：《城市道桥与防洪》2018年第11期144-147,共4页Urban Roads Bridges & Flood Control

基　　金：国家青年科学基金项目(51608137)

摘　　要：根据小箱梁构造特点,通过设置虚拟横梁模拟纵梁之间的连接。横梁沿横向设置5节点,分成4段。基于刚接梁理论计算小箱梁荷载横向分布,根据横向分布特点发现荷载在翼板与顶板的分布不同,将翼板、顶板的横梁刚度分别赋予横梁对应截面的刚度与零值,通过实例验证表明:与查表法相比,提出方法具有较好的精确度和适用性。Based on the construction features of small-box beam, the virtual beam is provided to simulate the connection of longitudinal beams. The beam is provided with five nodes along the horizontal direction and is divided into four segments. Based on the rigid-connected beam theory, the horizontal loading distribution of small-box beam is calculated. According to the horizontal distribution characteristic, it is found that the loading distribution of wing plate is different from the top plate. The beam rigidities of wing plate and top plate are respectively given to the corresponding section of beam rigidities and zero values. The example verification shows that the mentioned method has the better accuracy and applicability compared with the look-up table.

关 键 词：梁格法 分段虚拟横梁 刚接梁 荷载横向分布 

分 类 号：U441[建筑科学—桥梁与隧道工程]