The stirrup binding the longitudinal reinforcement at the upper part of the beam shall be bound by the buckle method.
2.
2.
Stirrups at the junction of beam end and column shall be densified, and their spacing and length of densified area shall meet the design requirements.
The stirrup shall be perpendicular to the main reinforcement, the intersection of the stirrup corner and the main reinforcement shall be bound, and the intersection of the main reinforcement and the non corner part of the stirrup shall be bound in a plum blossom staggered manner.
3.
（5） Beam longitudinal reinforcement structure requires grade III and IV seismic grade floor frame beam KL (VI) roof beam node standard practice seismic roof frame beam WKl longitudinal reinforcement structure (I) (VII) beam reinforcement standard installation of the second row of non-through reinforcement ln / 4 (VIII) wrong practice of beam longitudinal reinforcement extension, the upper longitudinal reinforcement extension of the beam shall be within ln / 3 in the middle of the span, and the longitudinal reinforcement of the beam shall be extended in the wall Within ln / 3 at column support.
The joints of stirrups (hook overlap) shall be staggered on the four corner longitudinal reinforcement.
When the design requires that the stirrup is provided with tie bar, the tie bar shall hook the stirrup.
5.
The wall reinforcement is a two-way stressed reinforcement.
Except that the intersection points of the two peripheral reinforcements shall be bound, the other points can be bound alternately.
When the main reinforcement is double-layer, cement precast strips can be used to pad between the two layers of reinforcement, and the row spacing of cement precast strips shall be ≥ 1.5m and not less than 2.
The wall reinforcement cushion block adopts plastic cushion block, which is arranged in quincunx shape, and the vertical and horizontal spacing shall not exceed 800 * 800mm.
The door and window openings shall be bound with coupling beam reinforcement according to the design requirements, and the length anchored into the wall shall meet the design requirements.
5.
Wrong practice Correct practice 6.
shall be installed in time.
The installation of beam reinforcement 1.
（1） Marking and positioning before beam stirrup installation (II) standard installation of beam reinforcement Stirrup hook position splayed installation The beam reinforcement cushion block is set at the corner reinforcement Stirrup vertical The stirrup hook is 135 ° (III) the core hoop is set at the junction of primary and secondary beams (IV) the structure of the longitudinal reinforcement extension position of the beam requires that the longitudinal reinforcement extension at the upper part of the beam shall be within ln / 3 of the midspan, and the longitudinal reinforcement extension at the lower part of the beam shall be within ln / 3 of the wall and column support.
If the deviation of main reinforcement exceeds the specification range, it shall be reported in time, After the technical director makes the treatment scheme, the construction shall be carried out according to the treatment scheme, and the site shall not deal with it by itself.
When binding the beam reinforcement, prevent the water and electricity pipeline from lifting or pressing down the reinforcement, and prevent lightning protection grounding before the beam reinforcement passes the acceptance, and weld its end or the intersection of main and secondary beams firmly.
Each intersection point of negative moment reinforcement shall be bound.
Binding of column stirrups: move the sheathed stirrups upward according to the marked stirrup position line and bind them from top to bottom.
2 reinforcement anchoring requirements the minimum anchorage length La and seismic anchorage length Lae of tensile reinforcement shall meet the requirements of 16g101-1 specification: 3 column reinforcement installation (I) column reinforcement binding 1.
In order to ensure that the wall reinforcement will not shift during concrete pouring, a wall reinforcement positioning frame welded with A8 reinforcement is proposed to be set on the top of each floor for the positioning of the relative position between the two layers of reinforcement and the positioning of a single reinforcement.
（1） When there are end columns in the shear wall structure, the horizontal reinforcement anchorage of the shear wall (II) the anchorage structure of the plate at the support at the end of the wall and column (III) the standard practice of the shear wall (IV) the reserved hole of the wall and plate to strengthen the reinforcement structure 5.
（4） Structural requirements for variable cross-section column longitudinal reinforcement structure at variable cross-section position of column (V) structural requirements for densification of column stirrups (VI) scope of densification area of column stirrups (VII) core stirrup requirements method Stirrup 100mm each (VIII) setting of cushion block of reinforcement protective layer requires symmetrical setting around the column (IX) welding connection of column longitudinal reinforcement requires welding connection of column longitudinal reinforcement (x) setting of positioning hoop requires that the initial stirrup is about 50mm from the ground and the column longitudinal reinforcement and beam reinforcement are firmly bound (XI) initial stirrup of column 4 installation of wall reinforcement 1.
Main reinforcement damaged by electric welding of formwork positioning reinforcement (II) correct practice of longitudinal reinforcement extension (III) treatment of column reinforcement deviation node Treatment of internal deviation of structural column reinforcement Treatment of structural column reinforcement out of position node note: if the basement column reinforcement is out of position outside the column, the column reinforcement can not be bent, the column size can be appropriately increased, and the column reinforcement can be wrapped into the concrete.
Place the stressed main reinforcement and the rear distribution reinforcement according to the marked spacing.
First set the stirrups on the lap bars protruding from the lower layer, and then weld the column reinforcement.
3.
The overlap of hooks of stirrups shall be staggered along the column vertical bars and bound firmly.
The first stirrup at the beam end shall be set 50mm away from the edge of the column node.
Set column stirrups: calculate the number of stirrups for each column according to the spacing required in the drawing.
1.
4.
4.
Then tie the horizontal bar spacing clamp, and then fix the horizontal distribution bar on the wall from top to bottom.
Clean the sundries on the formwork, mark the main reinforcement on the formwork with chalk, and distribute the spacing of reinforcement.
7.
Plastic cushion blocks shall be used at the side of the beam, and the vertical and horizontal spacing shall not exceed 1000mm.
Snap the position line of wall body and door and window openings on the floor concrete, The embedded dowel bars shall be corrected again.
Placement sequence of distribution bars in the wall body: the vertical bar spacing card shall be bound first, and the vertical distribution bars required for the wall body shall be placed at the side of the wall column and slightly fixed with the wall column.
Generally, the plate reinforcement shall be bound with straight buckle or eight shaped buckle.
Firstly, put the beam reinforcement from bottom to top, draw the stirrup spacing on the main reinforcement of the beam, set the beam stirrup, and then separate the stirrup one by one according to the drawn spacing.
In order to ensure the correct elevation position of door and window openings, mark the elevation line on the vertical reinforcement of the openings.
Before binding the reinforcement at the site of reinforcement installation and construction preparation, the garbage on the cushion and in the formwork shall be cleaned first.
Finally, fix the longitudinal distribution reinforcement.
If there is displacement, it shall be treated with the main reinforcement of the column.
The concealed acceptance of reinforcement can be organized..
The hooks of stirrups at the overlap shall be bound staggered in the beam.
Installation of cushion blocks: Marble cushion blocks shall be placed at the intersection of main and secondary beam stirrups and main reinforcement.
Installation of column cushion blocks: plastic cushion blocks shall be used for columns, and the vertical and horizontal spacing shall not exceed 800mm, and the horizontal spacing shall not be less than 2.
When there is a slab with beam in the cast-in-situ slab, the slab with beam reinforcement shall be bound first, and then the slab reinforcement shall be placed.
When the reinforcement at the joint is very dense, special attention shall be paid to the clear distance between the main reinforcement on the beam top surface of 30mm, which shall be subject to the minimum clear distance between the main reinforcement.
The extension area at the same section is greater than 50% (IX) beam reinforcement binding (unqualified) (x) standard binding of beam bottom reinforcement (qualified) full binding of beam bottom plate corner reinforcement, jumping binding of middle longitudinal reinforcement and setting of pull hook in place (XI) beam reinforcement spacing requirements: clear distance of upper longitudinal reinforcement of beam: ≥ 30mm and ≥ 1.5D; Clear distance of longitudinal reinforcement at the lower part of beam: ≥ 25mm and ≥ 1.0d.
It is advisable to bind them with buckles.
Finished horse stool of plate gluten, and the distance between horse stools shall not be greater than 1000mm * 1000mm.
4.
Pop up the column positioning control line on the floor concrete to check the column position.
In addition, cooperate with other types of work to install embedded pipe fittings and reserved holes, and their positions and elevations shall meet the design requirements.
After the formwork working face is cleaned, it shall be delivered to the reinforcement team as a whole.
All reinforcement intersections shall be bound point by point, and their overlapping degree and position shall meet the requirements of the design drawings and construction specifications.
2.
6.
Stirrups at the upper and lower ends of the column shall be densified, and the length of the densified area and the spacing of stirrups in the densified area shall meet the requirements of the design drawings.
The spacing of cushion blocks shall not exceed 800mm.
2.
3.
Installation of slab reinforcement 1.
The binding of beam reinforcement shall follow the principle of first frame beam and then non frame beam, first main beam and then secondary beam, first bind low span beam and then high span beam.
When binding, draw the position line of reinforcement on the formwork first: the bottom plate reinforcement shall be marked on the cushion; Wall plate reinforcement shall be scribed on the formwork; The column stirrup shall be marked on two diagonal lines, and the beam stirrup shall be marked on the erection reinforcement.
5.
When binding the plate bottom reinforcement, check whether both ends extend into the beam.
Draw stirrup spacing points: draw stirrup spacing points with chalk on the welded column vertical reinforcement according to the drawing requirements.
Embedded parts, wire pipes, reserved holes, etc.
