High-utilization-ratio rectangular open-hole accessory for corrugated web plate beam

The invention discloses a high-utilization-ratio rectangular open-hole accessory for a corrugated web plate beam. The high-utilization-ratio rectangular open-hole accessory comprises a top flange steel plate, a bottom flange steel plate, rectangular open-hole flat web plates, horizontal stiffening ribs, short stiffening ribs, and connecting plates; the rectangular open-hole flat web plates are arranged between the top flange steel plate and the bottom flange steel plate; the horizontal stiffening ribs are arranged at the upper edge and the lower edge of a rectangular open hole; the short stiffening ribs are arranged between the horizontal stiffening rib at the upper edge and the top flange steel plate as well as between the horizontal stiffening rib at the lower edge and the bottom flange steel plate; the connecting plates are arranged on two side edges of the rectangular open-hole flat web plates, wherein the connecting plates are connected with connecting plates of the corrugated web plate beam through bolt