| 摘要 |
The present invention relates to a large prefabricated composite beam comprising: a pair of web plates arranged at a distance from each other to form a side plate of a composite beam; a pair of upper flanges separately joined to an outer top of the web plates into an L shape; a lower plate which has a vertically bent end flange on both ends to come in contact with the bottom of the web plates in order to form the bottom plate of the composite beam; a first engaging bolt to engage the top of the web plates, the upper flanges, the bottom of the web plates, and the end flanges with each other in a horizontal direction through a plurality of through-holes on the top of the web plates, the upper flanges, the bottom of the web plates, and the end flanges; and a first engaging nut. According to the present invention, the large prefabricated composite beam can vary the cross section and thickness of the composite beam; can effectively arrange a transfer beam; and improve the workability of a transfer beam as the web plate and the lower plate are separately provided, and the composite beam can be assembled by the first engaging bolt and the first engaging nut. |
