Through using finite element method, the effect of ductile connections on internal force of frame structure is discussed. The results show that： under vertical loads, compared to the rigid connection, the girder end bending moment and column base moment will decrease, while the mid-span bending moment increases, under horizontal loads, compared to the rigid connection, the girder end bending moment decreases and column base moment increase significantly, while the mid-span bending moment does not change, under vertical loads and under horizontal loads at the same time, the internal difference between rigid and ductile connection is also obvious.%通过采用有限单元法进行分析,研究了柔性连接对框架结构内力的影响。研究表明,在竖向荷载作用下,相比较于刚性连接,梁端弯矩和柱脚弯矩均减小,而梁跨中弯矩变大。在水平荷载作用下,相比较于刚性连接,梁端弯矩减小,底层柱脚弯矩明显增大,此时梁跨中的弯矩几乎没有变化。当水平荷载和竖向荷载共同作用时,刚性连接与柔性连接之间的内力差别也是显著的。
展开▼
