A temporary skeleton system used a top down underground construction method

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The purpose of the present invention is to provide an independent temporary framework system including a temporary steel column and a temporary steel support beam to support a slab and a beam without interference of underground structures; and to facilitate assembling and dismantling. To achieve this, the present invention comprises a pair of temporary steel columns (13) installed underground through an opening (14) of the slab (15); the temporary steel support beam (11) at bottom of a steel beam (10) to support the steel beam and the slab; and a pair of fixing plates (12) at an end of the temporary steel support beam (11) at a predetermined distance from each other. Also, the present invention includes a pair of temporary steel columns (23) installed underground through an opening of (24) of a slab (25) at a predetermined distance from each other; a pair of temporary steel support beams (21) at the bottom of a steel beam (20) to support the steel beam and the slab; a connection plate (22) on which a cover plate (29) is installed to be bolted to the top and the bottom of a joint at one end, separated from each other; a gusset plate (26) separately installed on both flanges of the temporary steel columns (23) and on the bottom of a lower flange; and a brace (28) bolted to both sides of the gusset plate (26) using a pair of channels to support the temporary steel support beams (21).COPYRIGHT KIPO 2014