The Study Of Progressive Collapse For New Type Radar In Qinhuangdao

The progressive collapse of the structures has become a serious threat to the public safety. However, codes in China have not yet provided details on the resistance of progressive collapse. There in forced concrete structure is usual in our country. The paper analyses the study actuality about progressive collapse of buildings, talk about the significance of studying structure measures of reinforced concrete structure to resist progressive collapse currently. The characteristic of the earthquake load and the blast load is talked about, and the structural characteristic of reinforced concrete buildings is analyzed. By the process analysis of structure collapse, the paper summarizes structure measures of reinforced concrete structure to resist progressive collapse for domestic construction. The four grades of building are classified due to the level of protection. At this project, the different strategy to resist progressive collapse is taken in different buildings. In the Tie Force approach, the building is mechanically tied together, enhancing continuity, ductility, and development of alternate load paths. Tie forces are typically provided by the existing structural elements and connections that are designed using conventional design procedures to carry the standard loads imposed upon the structure. Structure measures: enhancing the positive moment reinforcement at the bottom of abeam and the negative moment reinforcement at the top of a beam, increasing the length of the stirrups areas at the end of a beam, enhancing the concrete strength, increasing the height of frame beam, choosing a fit bay of columns, etc. In addition, any collapse must not extend beyond the bays immediately adjacent to the removed element.