大型空间网架结构整体提升技术研究与仿真分析-建筑与土木工程专业论文.docx

内蒙 内蒙古科技大学硕士学位论文 II II Abstract With the increasing level of economic progress and the rapid development of science and technology, space grid structure gradually goes into large-span and high field in recent decades, while it is widely used in transportation hubs, convention centers, stadiums and industrial plants, such as a series of functional building. This opportunity allows various types of steel construction method showing a fast development trend, and the development of integral lifting technology is particularly prominent. The research of computer-controlled hydraulic jack integral lifting technology solves many problems of steel space structure construction. Meanwhile, it has important theoretical value and engineering practical significance to the installation of large steel structure. Based on the construction of a steel roof project of large space truss structure with integral lifting technology, the paper emphatically solved the key technical problems of integral lifting technology. At the same time, the author promoted lifting unit division, determined the scheme of lifting points, and calculated the bearing of steel wire and lifting force. Combined with the requirements of the actual building structure and construction site, the lifting frame and the reinforcement of the under anchor in the form of “truss joist” were designed, which ensured the stability of the main structure in lifting process. There were five steps to complete the installation of the wall-column grid in the form of an inverse construction approach. Besides, the system and principle of hydraulic integral lifting technology were presented. Furthermore, in order to strengthen the synchronization of structures in lifting process, the synchronization lifting strategies were researched on “lifting by grading load, hanging point hydraulic balancing, displacement synchronization control, reaching place by grading unload”, which provided a theoretical basis for the actual constr