Study on the Mechanical Characteristic and Safety Measures of Bowl-scaffold

The Cuplok Steel Tubular Scaffolding (hereinafter referred to as Bowl-scaffold) is an important temporary facility in bridge construction, which is widely used in the overpass bridge, viaduct and other long-span constructions. But its importance is often overlooked, because compared with the whole project, the Bowl-scaffold is only a temporary facility and its quantity is limited. In recent years several serious collapses have taken place in China which occurred in accident-prone scaffold areas. Therefore, its stability and safety should attract more attention. The mechanical characteristics of the Bowl- scaffold is deeply researched through the analysis of scaffolding features, the node status, the type and distribution of load, and the arrangement of the bars. Then, based on the mechanical characteristics analysis and on-site construction work, the factors that affect the stability and bearing capacity of the scaffoldings are analyzed. At last, measures ensuring the bearing capacity, stability and safety are put forward from design to construction.