The present invention relates to a hybrid mega girder, comprising: a plurality of columns (10); a plurality of first girders (100) connecting the columns (10) that are adjacent to each other; a plurality of second girders (200) connecting the first girders (100) that are adjacent to each other; and a slab (300) supported by the first girder (100) and the second girder (200), wherein the first girder (100) comprises: a frame (110); and a cross section surface expansion portion (120) formed between the frame (110) and the slab (300), thereby reducing material costs and construction costs.
展开▼
