| 摘要 |
Structure of rigidity diaphragm of composite building placed out of column net, or in column net without connection to columns, consists in horizontal plane of at least one middle and two end reinforced-concrete elements, middle elements have reinforcement with cross-section area of vertical armature not larger than 1% of cross-section of middle element, and the end elements have improved reinforcement with cross section of vertical armature not larger than 10% of area of cross-section of the end element, at that general width of reinforced end elements is not less than 0.15 L where L is width of diaphragm. Node of connection of diaphragm and discs of inter-storey floor has cross-like monolithic reinforced-concrete seam between middle elements of diaphragm and places of disc of inter-storey floor of monolithic seam, and the end elements of diaphragm go freely through all the discs of inter-storey floor of building through structural rounded cuts in plates of floor disc. Increase of strength of diaphragm with respect to bend is provided, at economy of armature steel.
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