Bench for prefabricating adjustable T-type beams with non-equal spans and different bottom widths and construction method of bench

The invention relates to a bench for prefabricating beams, and discloses a bench for prefabricating adjustable T-type beams with non-equal spans and different bottom widths. The bench is used for solving the problem about how to arrange a bench in a limited place so as to meet the requirements for prefabrication of T-type beams with different spans and the requirements of the production schedule. The bench comprises a base foundation, a bench foundation located on the base foundation, and a bench plane located on the bench foundation. Base foundation rebars for reserving steel channel opposite-pull holes are embedded into the base foundation. PVC pipes for reserving formwork opposite-pull holes are embedded into the bench foundation. The length of the bench plane is set according to long T-type beams needing to be prefabricated, and the width of the bench plane is set according to bottom widths of narrow T-type beams needing to be prefabricated. According to the bench for prefabricating the adjustable T-type beams, the adjustable non-equal T-type beams with the different spans and the different bottom widths can be prefabricated on the same bench. The invention further discloses a construction method of the bench for prefabricating the adjustable T-type beams with the non-equal spans and the different bottom widths.