论文部分内容阅读
结合洪泽市某综合楼斜向平移工程,对复杂结构斜向平移工程中的托换结构和轨道进行了协同工作分析。以杆件单元模拟水平托换桁架和轨道,移动支座(滚轴)和地基均采用弹簧单元进行模拟,上部结构用竖向荷载代替,采用SAP2000软件建立了协同分析有限元计算模型,讨论了滚轴摆放方式、斜梁尺寸、地基基床系数、轨道刚度变化时托换结构的内力、轨道的内力和变形、滚轴压力、地基反力的特点。分析表明:斜向平移时,各轨道的竖向荷载总和基本不受上述参数的影响;摆放方式对托换结构斜向连梁内力影响较大,对纵横梁内力的影响较小;轨道内力随连梁刚度的增大、移动轨道刚度的减小、地基弹性系数的增大而减小;滚轴通长布置时轨道内力减小;轨道外伸长度取值对轨道内力分布有明显影响。
Combined with the oblique translation project of a complex building in Hongze City, the collaborative work analysis was conducted on the underpinning structure and the orbit in the oblique translation project of complex structures. The horizontal truss truss and track are simulated by the bar element. The moving support (roller) and the foundation are simulated by the spring element. The superstructure is replaced by the vertical load. The finite element calculation model of the collaborative analysis is established by SAP2000 software. Roller placement, diagonal slab size, foundation bed coefficient, inner force of underpinning structure when track rigidity changes, inner force and deformation of track, roller pressure and foundation reaction force. The analysis shows that the vertical load of each track is basically unaffected by the above parameters when it is diagonally translated. The placement mode has a great influence on the internal force of the obliquely connected beam of the underpinning structure, but has little effect on the internal force of the longitudinal and transverse beams. With the increase of the rigidity of the connecting beam, the reduction of the orbital stiffness decreases with the increase of the elastic coefficient of the foundation. The internal force of the orbit reduces when the roller is extended and the value of the extension of the orbit has a significant effect on the internal force distribution.