CONSTRUCTION METHOD OF DIAGONAL HOLLOW FLOOR SLAB BRIDGE

摘要

PURPOSE:To make unnecessary a rigid connection method of bearings by arranging a specific number of T-shape steels on the bottom steel plate of a composite floor slab bridge, and placing concrete between the upper part of the T-shape steels and web element to form a hollow section between the bottom steel plate and concrete. CONSTITUTION:Four T-shape steels 2 are arranged on the bottom steel plate 1 of a composite floor slab bridge, an upper distribution bar 3 is placed to a position slightly higher than an upper flange 2a of each of the T-shape steels 2, and a lower distribution bar 4 is placed to the approximate 1/2 element of the height of a web. Concrete 5 is placed between the upper distribution bar 3 and lower distribution bar 4, and a hollow section 6 is formed between the bottom steel plate 1 and concrete 5, or the hollow section 6 is filled with foamable resin plate 7. According to the constitution, uplifts generated in acute angle sections of the floor slab bridge can be eliminated by substituting the concrete 5 for concrete having weight heavier than that commensurate with the uplifts generated in bearings in the acute angle sections thereof.