1, general requirements
Vertical structural reinforcement and other hidden works acceptance is completed, construction joints are ready for template installation. Before installing the column mold, to remove debris, welding or trimming template positioning embedded parts, do a good job of measuring and placing lines, wipe the template under the leveling mortar.
2, ± 0.000 template installation requirements
(1) bottom plate template installation order and technical points
Bedding construction is completed for the bottom plate template installation, the bottom plate side of the template all use brick mold, along the bottom plate side line extension 50mm masonry 240mm thick brick wall, the height of the second bottom plate thickness +450mm, in the thickness of the bottom plate within the range of masonry permanent protective wall, mortar using 1:3:3, the mortar is used to protect the bottom plate. Wall, mortar using 1:3 cement mortar, above 450nnn part of the masonry temporary protective wall, with mixed mortar masonry, brick wall inside 20mm thick 1:3 cement mortar.
The waterlogged pit, elevator shaft template using 15mm thick multi-layer plate according to the size of the pit processed into a shaped template. The template should be fixed firmly, and use the steel wire rope to pull the template on the bottom plate reinforcement to prevent the template from floating when pouring concrete.
(2) wall template installation order and technical points
①Template installation order
Template positioning, verticality adjustment → template reinforcement → acceptance → concrete pouring → dismantle the mold
②Technical Points
Prior to installing the wall template, we should chisel the stubble on the wall, remove debris inside the wall with the compressor, and do a good job of measuring and placing the line. In order to prevent the root of the wall template leakage "rotten root" phenomenon, before the installation of the wall mold, in accordance with the size of the bottom of the line on the paste sponge strips, to achieve flat, accurate, firmly bonded and pay attention to the quality of the installation of bolts through the wall.
3, ± 0.000 above the template installation requirements
(1) wall template installation sequence and technical points
①Template installation sequence
Template positioning, verticality adjustment → template reinforcing → acceptance → concrete pouring → demolding
②Technical points
The cylinder template supporting mold are double-sided support, the use of tension Bolts are fixed, and the bolt holes are plugged with conical plugs to prevent slurry leakage. Simple body with the change in height wall thickness changes, the use of changing the yin and yang corners of the mold and B-board (d-board) size adjustment of the mold.
4, template assembly
Template assembly should be strictly in accordance with the template board drawing dimensions assembled into a whole, template assembly in the field, to control the adjacent board between the joints, two board joints should be added at the card in order to prevent the leakage of slurry, assembly is completed with a steel wire to the template and the vertical steel pipe tied firmly in order to maintain the integrity of the template. The precision requirements of assembling are as follows:
1, splicing seam between two templates ≤1
2, height difference between adjacent templates ≤1
3, template flatness ≤2
4, template planar dimensional deviation ±3
5, template positioning
When the bottom plate or the top plate of the concrete has been poured and has a certain strength (≥1.2 MPa), that is to say, when hand-pressing, the template is pressed by the hand, it will be pressed by the hand, and then the template is pressed by the hand. MPa), that is, by hand, no flimsy, no traces, before you can start on the axial casting. According to the position of the axis put out the wall column section position size line, template 500 control line, in order to facilitate the installation and correction of the wall template. When the wall concrete is poured, after the removal of the template, began to lead the floor 500mm elevation control line, and according to the 500mm line will be the bottom of the control line directly to the wall.
First of all, according to the floor axis measuring holes to quote the main axis of the building control line, and the control line as a starting point, quote each wall axis, according to the axis and the construction drawings with an ink line pop-up template of the inner line, side lines and the outer control line, construction before the three lines must be in place, in order to facilitate the template installation and calibration.
6, the template support
The template support before the air compressor will clean the floor. There shall be no water, debris, and the construction joints surface slurry removed, rinse with water. All inner templates must be brushed with oil-based mold release agent.
7, wall template
Bamboo plywood before using the template surface cleanup, brush isolation agent, isolation agent is strictly prohibited staining of reinforcing steel and concrete hew. Vertical back flute 60 × 80 wood spacing 300 mm (starting 200 mm, above 400 mm spacing, the rest of the spacing 600 mm), horizontal flute 80 × 100 wood spacing 500 mm. reinforcement through the back flute on the perforated tie through the wall bolts horizontal spacing of 600 mm, vertical spacing of 500 mm, diagonal support with a steel pipe in the lower three spacing of 600 mm reinforcement to ensure its stability. ensure its stability. The outer wall of the basement is reinforced with M14 tie bolts with water-stopping piece and small wooden block limit piece at the end to prevent groundwater from seeping into the wall along the tie bolts. The bottom three tie bolts are equipped with double nuts on both sides. The inner wall uses ordinary recyclable through-wall bolts.
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