Steel reinforcement structure of bubbledeck slab elements and procedure of manufactur-ing bubbledeck slab elements

摘要

(71) DO, Due Thang [VNINA]; A201-M3 M4, Nguyen Chi Thanh Str., Dong Da District, Hanoi W). (57) (57) The invention relates to the steel reinforcement structure of hollow concrete deck and the procedure to manufacture such kind of bubbledeck. The steel structure of bubbledeck element includes upper steel mesh (110); lower steel mesh (120) g at bottom place and in parallel to the upper steel mesh (110); hollow plastic balls (130) are arranged between upper mesh (110) and lower steel mesh (120) creating many ranges of hollow plastic balls placed in parallel with each other in horizontal and vertical directions; many connectors (140) to joint upper steel mesh (110) and lower steel mesh (120); formwork system (150) is fit into lower steel mesh (120), in which each connector (140) is connected to a steel bar (111) of a grid cell (112) where no hollow plastic bodies (130) of upper steel mesh (110) is fixed to a steel bar (121 ) in a skew angle of a lower corresponding grid cell (122) 5 where no hollow plastic balls (130) of lower steel mesh (120) is fixed, creating a diagonal connecting system composes of many connectors (140) of sinuous shape go along with the longest side of deck ele- ment, and formwork system (150) consists of many connector parts (160) which are arranged into grid cells (122) of the lower steel mesh (120) separated by 3 grid cells (122) in each grid range and in alternate positions in two adjacent grid cell range separated by 2 ranges of grid, and many formwork plates (170) s of designed size which can be removed or fit.