| Summary: | 碩士 === 國立交通大學 === 工學院產業安全與防災學程 === 105 === The steel structure removal of high-tech factory in Taiwan is a new issue. There are not many studies regarding to the methods of steel structure removal and the tools and protective equipment used by demolition personnel. This paper is a case study on the actual demolition of a high-tech factory. It focuses on the demolition methods of truss, beam, column, dense beam, steel bearing plate, special components and so on and the risks. And then it proposes the improvement plan to provide the constructer for reference.
When the trusses or beams of the steel structure factory are removed, the cuttings may fall down due to gravity and the crane may be overturned by pulling force. If the prestressing force is too large, the cuttings may bounce and hit the construction staff. Therefore, in order to avoid the loss of personnel and property, it needs to use a crane to apply a reasonable prestressing force and use the special cutting methods.
The steel structure removal should follow the construction sequence from outside to inside and from top to bottom. Because the constructers work aloft and the risk of falling is high, the safety cable and the middle pole need constantly to be installed or removed with the work process. This is not the same as the traditional method. Steel structure removal needs to use oxyacetylene for cutting. It will cause great damage for using the traditional spark-undertaking boxes or fire blanker. And the falling sparks may ignite a safety net or a flammable safety cable, while the slag after cooling may cause the construction personnel to slip need to be cleaned regularly.
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