Process steps of steel bar processing
On-site elastic line, and cut chisel, clean the joint surface concrete laitance, loose sub, concrete block, etc., finishing the joint catch reinforcement.
1. Preparation
(1) on-site elastic line, and pick chisel, clean the joint surface concrete laitance, loose sub, concrete block, etc., finishing the joint bar.
(2) Check whether the gauge, diameter, shape, size and quantity of steel bars to be tied are consistent with the material list, material plate and drawings.
(3) Prepare the steel wire, tools and lashing frame for lashing.
2. Column rebar binding
(1) The binding of column reinforcement shall be carried out before the installation of column formwork.
(2) the position of the first steel joint of each layer of column should not be less than 500mm from the floor height, 1/6 of the height and column section
The larger value in the face length (or diameter).
(3) The reinforcement of frame beam, bracket and column cap shall be placed inside the longitudinal reinforcement of column.
(4) When the vertical reinforcement in the column is lapped, the hook of the corner reinforcement shall be formed with the formwork. (Polygon column is inside the template
The bisection angle of the angle, the round column should be perpendicular to the tangent line of the template), and the hook of the middle steel bar should be 90 degrees to the template.
(5) The joints of stirrup (hook superposition) shall be staggered on the longitudinal reinforcement at the four corners; The intersection point of stirrup corner and longitudinal reinforcement shall be firmly fastened (the straight part of stirrup and the intersection point of longitudinal reinforcement can be fastened at intervals). When binding stirrup, the binding buckle shall form a figure eight.
(6) If there is no special requirement in the design, when the diameter of the longitudinal stressed steel bar in the column is greater than 25mm, two stirrups shall be set up within l00mm outside the two end faces of the lap joint, and the spacing shall be 50mm.
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