| Recently,with the development of the economic and the improvement of the living level, more andmore large-span factory,exhibition center,gymnasium have appeared. This means that the large-spanspacesteel structure is more and more used in our life,it is gaining a rapid development. The improvement of material and structure style must lead to the development of installation. The way of installation is greatly familiar with the style of structure. On one side, the structure styleconfines the selection of install way, different style means different way, also the different install points. Onthe other side, whether the structure can be install well lies much on whether the installation project is goodand how to solve the key question during the process. Combine with the steel structure installation of Nan-jing Olympic Stadium, the paper will do someresearch and analysis in the key technology and problem, such as: (1)Analyze the installation essential and problem, contrast the feasibility of the project, then determinethe best installation project and its procedure; (2)Select a good analysis method to fit the condition of installation and build a relevant model, and itis easy to monitor the all process of installation; (3)Design a good reasonable brace system through making analysis with the structure character andthe environment, then decide the location project and the uninstall project; (4)Do some research in how to ensure the process of installation; (5)Make some study in how to control the quality of the installation. In the end, the paper generalizes the research result and gives some suggestions as the reference to thesimilar installation in the future.
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