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Long Span Composite Beam And Long Span Structure Construction Method Using The Same
Long Span Composite Beam And Long Span Structure Construction Method Using The Same
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机译：大跨度组合梁及使用该组合梁的大跨度结构施工方法
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摘要
The present invention relates to a long span structure for securing a large space of a pillar, and is constructed by allowing a slab structure to be constructed while maintaining a shape in which the steel beam is bent upward from the center so as to correspond to the stress form received by the beam member in the building structure. Prevents the deflection of the beam in the state of securing the main long span (primary resistance), and even if the deflection occurs in the center of the steel beam constructed in the above bending state by the load applied to the slab later, it does not sag downward but will be flattened. Since it is only (secondary resistance), it relates to a long span structure and a construction method of a long span structure that does not lead to a decrease in durability of a building. The present invention is "steel frame beam composed of an upper and lower flanges and webs; A lower surface concrete coated on an intermediate region of a lower surface flange of the steel beam; And upper concrete covered at both ends of the upper flange of the steel beam. It provides a long span composite beam comprising a. In addition, the present invention "(a) installing the composite beam of claim 1 between the pillar members; (b) deriving a curvature inflection point when the composite beam is bent at a bending rate to correspond to a stress form received by the center and both ends of the beam member of the building structure; (c) disposing a hydraulic jack at the center of the composite beam and below the curvature inflection points on both sides; (d) pushing up the composite beam with the hydraulic jack, and bending the composite beam at a bending rate to correspond to the stress forms received by the center and both ends of the structural structure beam member; (e) While maintaining the pressing force of the hydraulic jack, a copper bar with a height adjusted under the composite beam is installed, and the height of the copper bar is adjusted according to the shape of the composite beam, so that the copper bar supports the composite beam and is curved. Installing to maintain, and recovering the hydraulic jack; And (f) pouring and curing the concrete covering the composite beam as a whole and the slab concrete on the top of the composite beam, and then dismantling the copper bar. A method of constructing a long span structure including the same is provided.
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