Prestressed short to round hole plate installation
1 scope
This technology standard is suitable for the brick structure, exterior brick mold, plate within internal model, frame structure, prestressed round orifice (long and short to the board) installation.
2 construction preparation
2.1 material and main equipments:
2.1.1 prestressed hole board: there should be no defects such as crack, warp. Products should comply with the quality requirements, should have the factory certificate. Member state shall practise a product license, product license Numbers should be in accordance with the provisions.
2.1.2 cement: the label above no. 325 slag Portland cement and ordinary Portland cement, Portland cement. Cement should be the factory certificate, according to the rules for a second interview.
2.1.3 sand, medium sand.
2.1.4 tools: steel board, pry root, casing, pipe support, 100 mm x 100 mm wood square pillar, tool type rigid frame module and fixture, etc.
2.2 operation conditions
2.2.1 piled up in the designated place, after round orifice play yard should level off ramming, stow-wood to near rings or 300 mm from the plate end, stow-wood and alignment, can not have the basis of the stacking height is not more than 10 pieces. Different number plate piled.
2.2.2 before installation according to the design drawing check the plate number of the floor slab, and check the round hole plate quality, deformation, fracture, damage phenomenon, may not be used.
2.2.3 extreme round hole, the file before delivery with 50 mm thick, M2.5 mortar block by slurry plugging. Before installation should check whether the good. For 60 mm mortar away from extreme distance. For prestressed short round orifice plate end anchorage reinforcement (beard), should be used for casing straighten out, bending 45 °, can not be bent into a dead corner, prevent fracture.
2.2.4 artifacts such as damage, but through the reinforcement reinforcement of fair use, research and design units to reinforce reinforcing measures, and after the formalities of the change of the negotiation, are allowed to install.
3 operation process
3.1 process:
Leveling layer or hard branch mode to drawing board position line, hoisting floor to adjust the plate location, binding or welding anchor reinforcement
3.2 leveling layer or hard branch mode: round hole plate up the wall or roof beam before installation clean, elevation and axis dimension inspection, according to the design requirements of cement mortar screed-coat, thickness is 1.5 ~ 20 mm commonly, mixture ratio of 1:3. In cast-in-situ concrete installation hole on the wall board, normally the wall, the concrete strength more than 4 mpa for installation. Install round orifice plate can also be hard wearing shuttering method: according to the plate bottom elevation 100 m x 100 mm (with steel pipes or wooden pillars supporting the main wall, above the supporting plate bottom (to straight, steel or wood pillar bottom cushion long scaffolding, chock back tough roots, upon application, ensure the plate bottom elevation.
3.3 row plate position line: in the retainer prestressed hole board wall or beam profile, according to the requirements of design drawings to draw plate seam line of position, should be marked on the beam or the wall plate, round orifice between open joints as stipulated in the design, when the design has no rules, plate width of 40 mm. Sew wide 60 mm, should be in accordance with the requirements of reinforcement design.
Lifting floor: 3.4 requirement each lifting point even when lifting force, board face level, avoid torsional become warped plate cracking. Like the wall USES the method of cement mortar screed-coat, before hoisting floor or the wall beam with plain cement (water cement ratio 0.45). According to the design drawing to check the wall plate number is correct, then a drunbility, no fault. Alignment position line installation plate end, slowly down, steadier before allowing decoupling.
3.5 adjustment plate location: toggle plate end his shaft, make on both ends of the plate wall length and the distance between the plate conform to the requirements of the design drawings.
3.6 binding or welding anchor reinforcement: such as short to the board, the board side out of the anchoring reinforcement (beard) after finishing a 45 ° bend, bend and cross each other. In the corner of length of 1 phi 6 through connection. Joints shall be not less than 40 mm, greater than 60 mm, should according to the design requirements of reinforcement. It is strictly prohibited on the anchoring reinforcement curved 90 ° or pressure under the plate. Bending anchoring reinforcement on casing slow, prevent bending is broken. To plate, such as long in place after welding the anchoring reinforcement will be according to the requirements of drawings, with 1 phi 12 long tendons, the board side every board outstretched prestressed with another piece of plate plate end protruding reinforced root welding, but at least four spot welding every board. Welding quality comply with the provisions of the welding procedures.
4 quality standards
4.1 ensure projects:
4.4.1 hoisting strength component must comply with the design requirements, such as design requirements, should not be less than 70% of the design strength grade. Check the component factory certificate.
4.1.2 component types, location and protection anchor must comply with the design requirements, and no deformation and damage phenomenon. Check the lifting record.
4.2 the basic items:
2 level, sit pulp, plate end plug hole, slit width should comply with the design requirements and construction norms.
4.2.2 component joint welding should be smooth, no sag, flash, weld length conforms to the requirements, no cracks, porosity, slag inclusion and joint bite edge.
Holdings allow deviation project
Aside the floor length: plus or minus 10 mm feet quantity check.
Adjacent small floor surface elevation difference:
5 mm plaster
Don't plaster 3 mm
5 finished product protection
5.1 round orifice during transport and storage, different number plate should be piled up. Yard to formation compaction, pile up when leaving gaps between the plate and the ground, and drainage measures, plate during transportation will be binding and firm, in case of mobile, beating or dump on the board end all contact with the rope in concrete, the gasket should be used to protect.
5.2 big mould structure concrete wall installation floor, in general, should be in the wall concrete strength of more than 4 mpa, party must install the floor.
5.3 short to prestressed hole board only allow carved small chisel holes, and shall not be hurt two consecutive root ribs, carved chisel gently, not the rest of the damage plate; When the board needs to take larger hole, designers should be invited for accounting, reinforcement measures. For long to the plate also allows only take small holes, and shall not be helped and advocate muscle injury, if you have difficulty, designers should be invited for accounting, make the corresponding reinforcement processing.
5.4 round orifice anchoring reinforcement shall be properly protected, shall not bend or break.
After 5.5 buckle plate, plate in the middle should add a support, to ensure the construction safety and quality of the installation of the floor.
5.6 installation shall not be trampled ring beam floor.
6 should pay attention to quality problems
6.1 installation unqualified floor: before installation of floor not only to check the product certificate, should also check whether there are cracks or other defects. Prevent in place after the found board is unqualified.
6.2 the length of the lap on the bearing plate end enough: plate in place, the lap length depending on both ends. Or plate in place after a random prize.
6.3 floor blind stitching: before installation not in accordance with the requirements of design drawings to draw seam width line of position; Don't look at line when hoisting in place; In place after the other researchers randomly move plate, can create floor blind stitch.
6.4 floor and pedestal lap false: should check before gusset plate wall elevation, the good mortar screed-coat, gusset plate when pouring cement slurry.
6.5 plug hole too shallow and floor anchoring reinforcement broken: gusset plate inspection hole plugging will points before the design requirements. Short anchor reinforcement to the board to rationalize, tied to a reinforced by the regulation, to prevent the pressure into the wall, the length to the plate welding anchor reinforcement according to stipulations.
7 quality records
This technology standard should have the following quality records
7.1 steel factory quality certificate or test report.
7.2 steel mechanical test report.
7.3 component factory certificate.
7.4 electrode factory certificate.
7.5 prefabricated segments record record (preview).
7.6 component installation engineering quality inspection record separately.
1 scope
This technology standard is suitable for the brick structure, exterior brick mold, plate within internal model, frame structure, prestressed round orifice (long and short to the board) installation.
2 construction preparation
2.1 material and main equipments:
2.1.1 prestressed hole board: there should be no defects such as crack, warp. Products should comply with the quality requirements, should have the factory certificate. Member state shall practise a product license, product license Numbers should be in accordance with the provisions.
2.1.2 cement: the label above no. 325 slag Portland cement and ordinary Portland cement, Portland cement. Cement should be the factory certificate, according to the rules for a second interview.
2.1.3 sand, medium sand.
2.1.4 tools: steel board, pry root, casing, pipe support, 100 mm x 100 mm wood square pillar, tool type rigid frame module and fixture, etc.
2.2 operation conditions
2.2.1 piled up in the designated place, after round orifice play yard should level off ramming, stow-wood to near rings or 300 mm from the plate end, stow-wood and alignment, can not have the basis of the stacking height is not more than 10 pieces. Different number plate piled.
2.2.2 before installation according to the design drawing check the plate number of the floor slab, and check the round hole plate quality, deformation, fracture, damage phenomenon, may not be used.
2.2.3 extreme round hole, the file before delivery with 50 mm thick, M2.5 mortar block by slurry plugging. Before installation should check whether the good. For 60 mm mortar away from extreme distance. For prestressed short round orifice plate end anchorage reinforcement (beard), should be used for casing straighten out, bending 45 °, can not be bent into a dead corner, prevent fracture.
2.2.4 artifacts such as damage, but through the reinforcement reinforcement of fair use, research and design units to reinforce reinforcing measures, and after the formalities of the change of the negotiation, are allowed to install.
3 operation process
3.1 process:
Leveling layer or hard branch mode to drawing board position line, hoisting floor to adjust the plate location, binding or welding anchor reinforcement
3.2 leveling layer or hard branch mode: round hole plate up the wall or roof beam before installation clean, elevation and axis dimension inspection, according to the design requirements of cement mortar screed-coat, thickness is 1.5 ~ 20 mm commonly, mixture ratio of 1:3. In cast-in-situ concrete installation hole on the wall board, normally the wall, the concrete strength more than 4 mpa for installation. Install round orifice plate can also be hard wearing shuttering method: according to the plate bottom elevation 100 m x 100 mm (with steel pipes or wooden pillars supporting the main wall, above the supporting plate bottom (to straight, steel or wood pillar bottom cushion long scaffolding, chock back tough roots, upon application, ensure the plate bottom elevation.
3.3 row plate position line: in the retainer prestressed hole board wall or beam profile, according to the requirements of design drawings to draw plate seam line of position, should be marked on the beam or the wall plate, round orifice between open joints as stipulated in the design, when the design has no rules, plate width of 40 mm. Sew wide 60 mm, should be in accordance with the requirements of reinforcement design.
Lifting floor: 3.4 requirement each lifting point even when lifting force, board face level, avoid torsional become warped plate cracking. Like the wall USES the method of cement mortar screed-coat, before hoisting floor or the wall beam with plain cement (water cement ratio 0.45). According to the design drawing to check the wall plate number is correct, then a drunbility, no fault. Alignment position line installation plate end, slowly down, steadier before allowing decoupling.
3.5 adjustment plate location: toggle plate end his shaft, make on both ends of the plate wall length and the distance between the plate conform to the requirements of the design drawings.
3.6 binding or welding anchor reinforcement: such as short to the board, the board side out of the anchoring reinforcement (beard) after finishing a 45 ° bend, bend and cross each other. In the corner of length of 1 phi 6 through connection. Joints shall be not less than 40 mm, greater than 60 mm, should according to the design requirements of reinforcement. It is strictly prohibited on the anchoring reinforcement curved 90 ° or pressure under the plate. Bending anchoring reinforcement on casing slow, prevent bending is broken. To plate, such as long in place after welding the anchoring reinforcement will be according to the requirements of drawings, with 1 phi 12 long tendons, the board side every board outstretched prestressed with another piece of plate plate end protruding reinforced root welding, but at least four spot welding every board. Welding quality comply with the provisions of the welding procedures.
4 quality standards
4.1 ensure projects:
4.4.1 hoisting strength component must comply with the design requirements, such as design requirements, should not be less than 70% of the design strength grade. Check the component factory certificate.
4.1.2 component types, location and protection anchor must comply with the design requirements, and no deformation and damage phenomenon. Check the lifting record.
4.2 the basic items:
2 level, sit pulp, plate end plug hole, slit width should comply with the design requirements and construction norms.
4.2.2 component joint welding should be smooth, no sag, flash, weld length conforms to the requirements, no cracks, porosity, slag inclusion and joint bite edge.
Holdings allow deviation project
Aside the floor length: plus or minus 10 mm feet quantity check.
Adjacent small floor surface elevation difference:
5 mm plaster
Don't plaster 3 mm
5 finished product protection
5.1 round orifice during transport and storage, different number plate should be piled up. Yard to formation compaction, pile up when leaving gaps between the plate and the ground, and drainage measures, plate during transportation will be binding and firm, in case of mobile, beating or dump on the board end all contact with the rope in concrete, the gasket should be used to protect.
5.2 big mould structure concrete wall installation floor, in general, should be in the wall concrete strength of more than 4 mpa, party must install the floor.
5.3 short to prestressed hole board only allow carved small chisel holes, and shall not be hurt two consecutive root ribs, carved chisel gently, not the rest of the damage plate; When the board needs to take larger hole, designers should be invited for accounting, reinforcement measures. For long to the plate also allows only take small holes, and shall not be helped and advocate muscle injury, if you have difficulty, designers should be invited for accounting, make the corresponding reinforcement processing.
5.4 round orifice anchoring reinforcement shall be properly protected, shall not bend or break.
After 5.5 buckle plate, plate in the middle should add a support, to ensure the construction safety and quality of the installation of the floor.
5.6 installation shall not be trampled ring beam floor.
6 should pay attention to quality problems
6.1 installation unqualified floor: before installation of floor not only to check the product certificate, should also check whether there are cracks or other defects. Prevent in place after the found board is unqualified.
6.2 the length of the lap on the bearing plate end enough: plate in place, the lap length depending on both ends. Or plate in place after a random prize.
6.3 floor blind stitching: before installation not in accordance with the requirements of design drawings to draw seam width line of position; Don't look at line when hoisting in place; In place after the other researchers randomly move plate, can create floor blind stitch.
6.4 floor and pedestal lap false: should check before gusset plate wall elevation, the good mortar screed-coat, gusset plate when pouring cement slurry.
6.5 plug hole too shallow and floor anchoring reinforcement broken: gusset plate inspection hole plugging will points before the design requirements. Short anchor reinforcement to the board to rationalize, tied to a reinforced by the regulation, to prevent the pressure into the wall, the length to the plate welding anchor reinforcement according to stipulations.
7 quality records
This technology standard should have the following quality records
7.1 steel factory quality certificate or test report.
7.2 steel mechanical test report.
7.3 component factory certificate.
7.4 electrode factory certificate.
7.5 prefabricated segments record record (preview).
7.6 component installation engineering quality inspection record separately.
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