Double reinforced composite plate steel binding
1 scope
This technology standard is suitable for multi-storey and high-rise civil building composite floor or roof plate steel binding. The conditions for industrial buildings can also be used.
2 construction preparation
2.1 material and main equipments:
2.1.1 reinforced: reinforced level, diameter must comply with the design requirements, should be no rust and oil. Want to have the factory quality certificate and second-round exam report reinforced.
2.1.2 tie wire: 20 ~ 22 HuoShaoSi.
2.1.3 block: water slurry made from 50 mm x 50 mm, thickness is equal to the thickness of protection layer design.
2.1.4 major equipment: electric welding machine, steel spanner, steel hook, etc.
2.2 operation conditions:
2.2.1 composite plate has finished lifting beam steel has binding and composite layer template has been installed, the wall out lap steel etc have been check after repair, according to the drawings and its scale, grout clean up dirt, etc. All these items have completed implicit inspection or preview procedures, respectively.
2.2.2 composite layer reinforced in processing and shaping, according to the design requirements check its specification, type, size and quantity is correct, and according to the location specified in the construction plan, and according to the specifications, part and serial number set up respectively, wood piles.
3 operation process
3.1 process:
Clean up the plate and the plate seam, and finishing plate out of the steel - plate joint rebar - binding rings and two-way reinforcement
Short bearing negative bending rebar and quality inspection
3.2 composite panel and the joints of sundry, smacked a requirement of composite slab reinforcement according to the drawing, as shown in figure 4 to 25.
Figure 4-25
3.3 binding splicing joints 5 long tendons. To use phi 5 cold drawing mild steel wire flat welding forming double bar, tie plate seam reinforcement are divided into Ⅳ level, according to the drawing design implementation, the requirements of the seam binding makeup as shown in figure 4 to 25.
3.4 rings two-way rebar, along the rings of the two directions are used on long phi 8 jin two-way connection, into the adjacent cross 400 mm, 180 ° hook end. And rings to through rectangular rings, and the other has always been put under the rectangular steel and binding, as shown in figure 4-26 (three spell, for example).
Figure 4-26
3.5 bearing negative bending rebar and its protective layer to ensure no greater than 20 mm, with each frame stud buckle are binding, which is set under negative moment reinforcement bar stool, to ensure the space position of negative moment reinforcement correctly.
4 quality standards
4.1 ensure projects:
4.4.1 the variety and quality of steel must comply with the design requirements and the provisions of the relevant standards.
Inspection method: inspect the factory quality certificate and test report.
4.1.2 the mechanical properties of the mild steel cold drawn steel must comply with the design requirements and norms.
Inspection method: inspect the factory quality certificate, test report and cold drawing record.
4.1.3 steel surface must be clean, with granule or flake old rust, remains after derusting pitting reinforcement, it is forbidden to use according to the original specifications.
Inspection method: to observe the examination.
4.1.4 reinforced specifications, shape, size, quantity, anchorage length and joint setting, must comply with the design requirements and norms.
Methods: to observe the or feet quantity check.
4.2 the basic items:
2 button missing, string does not exceed the number of bound of the number of 10%, and should not be concentrated.
Inspection methods: observation and lever.
4.2.2 steel hook towards right, binding joint, lap length conform to the requirements of construction specifications.
Inspection method: to observe the feet and check.
Holdings peace hook Angle straight length comply with the norms of construction.
Inspection method: to observe the feet and check.
4.2.4 spot-welded joints no crack and porosity defects, solder joints in molten metal uniform, no burns.
Inspection methods. With a small hammer, a magnifying glass to check.
4.3 allowable deviation projects, see table 4-13.
Table 4-13
Will project allow deviation (mm) test method
To force spacing 1 + 10 feet at both ends, the middle point from each, take its maximum value
Colligation tectonic spacing 2 + 20 feet three gears, take its maximum value
3 welding structure space plus or minus 10 feet three gears, take its maximum value
Displacement of the center line of the five
Level elevation difference + 3 to 0
5 reinforced protective layer plus or minus 3 feet, quantity check
5 finished product protection
5.1 after bearing negative moment reinforcement tie up, not on the job or walk, and hold people care and repair, maintain its correct location.
5.2 hydropower pipeline installation, shall not be arbitrarily cut and displacement has good steel.
6 should pay attention to quality problems
6.1 support negative bending space position, should strengthen the finished product protection and set the bar stool, a moderate amount of encryption. Negative bending moment uneven spacing, the end is not in a straight line. Should strengthen the spacing between the logo and end thread binding.
6.2 rings two-way access phi 8 jin long, into the span length is insufficient, or end, long side short, reinforcement to correctly, binding to overcome obstacles, carefully into the span length, evenly on both ends.
Jilt a reinforced plastic composite plate is not standard 6.3: plate seam 5 through reinforcement is not straight, long tie not firm. Should be seriously in accordance with the provisions, plastic, adhere to the rational binding sequence.
7 quality records
This technology standard should have the following quality records:
7.1 steel quality certificate or test report.
7.2 steel (raw material, welding) test report.
7.3 steel inspection records.
7.4 steel component project technical disclosure.
7.5 steel component engineering quality inspection.
1 scope
This technology standard is suitable for multi-storey and high-rise civil building composite floor or roof plate steel binding. The conditions for industrial buildings can also be used.
2 construction preparation
2.1 material and main equipments:
2.1.1 reinforced: reinforced level, diameter must comply with the design requirements, should be no rust and oil. Want to have the factory quality certificate and second-round exam report reinforced.
2.1.2 tie wire: 20 ~ 22 HuoShaoSi.
2.1.3 block: water slurry made from 50 mm x 50 mm, thickness is equal to the thickness of protection layer design.
2.1.4 major equipment: electric welding machine, steel spanner, steel hook, etc.
2.2 operation conditions:
2.2.1 composite plate has finished lifting beam steel has binding and composite layer template has been installed, the wall out lap steel etc have been check after repair, according to the drawings and its scale, grout clean up dirt, etc. All these items have completed implicit inspection or preview procedures, respectively.
2.2.2 composite layer reinforced in processing and shaping, according to the design requirements check its specification, type, size and quantity is correct, and according to the location specified in the construction plan, and according to the specifications, part and serial number set up respectively, wood piles.
3 operation process
3.1 process:
Clean up the plate and the plate seam, and finishing plate out of the steel - plate joint rebar - binding rings and two-way reinforcement
Short bearing negative bending rebar and quality inspection
3.2 composite panel and the joints of sundry, smacked a requirement of composite slab reinforcement according to the drawing, as shown in figure 4 to 25.
Figure 4-25
3.3 binding splicing joints 5 long tendons. To use phi 5 cold drawing mild steel wire flat welding forming double bar, tie plate seam reinforcement are divided into Ⅳ level, according to the drawing design implementation, the requirements of the seam binding makeup as shown in figure 4 to 25.
3.4 rings two-way rebar, along the rings of the two directions are used on long phi 8 jin two-way connection, into the adjacent cross 400 mm, 180 ° hook end. And rings to through rectangular rings, and the other has always been put under the rectangular steel and binding, as shown in figure 4-26 (three spell, for example).
Figure 4-26
3.5 bearing negative bending rebar and its protective layer to ensure no greater than 20 mm, with each frame stud buckle are binding, which is set under negative moment reinforcement bar stool, to ensure the space position of negative moment reinforcement correctly.
4 quality standards
4.1 ensure projects:
4.4.1 the variety and quality of steel must comply with the design requirements and the provisions of the relevant standards.
Inspection method: inspect the factory quality certificate and test report.
4.1.2 the mechanical properties of the mild steel cold drawn steel must comply with the design requirements and norms.
Inspection method: inspect the factory quality certificate, test report and cold drawing record.
4.1.3 steel surface must be clean, with granule or flake old rust, remains after derusting pitting reinforcement, it is forbidden to use according to the original specifications.
Inspection method: to observe the examination.
4.1.4 reinforced specifications, shape, size, quantity, anchorage length and joint setting, must comply with the design requirements and norms.
Methods: to observe the or feet quantity check.
4.2 the basic items:
2 button missing, string does not exceed the number of bound of the number of 10%, and should not be concentrated.
Inspection methods: observation and lever.
4.2.2 steel hook towards right, binding joint, lap length conform to the requirements of construction specifications.
Inspection method: to observe the feet and check.
Holdings peace hook Angle straight length comply with the norms of construction.
Inspection method: to observe the feet and check.
4.2.4 spot-welded joints no crack and porosity defects, solder joints in molten metal uniform, no burns.
Inspection methods. With a small hammer, a magnifying glass to check.
4.3 allowable deviation projects, see table 4-13.
Table 4-13
Will project allow deviation (mm) test method
To force spacing 1 + 10 feet at both ends, the middle point from each, take its maximum value
Colligation tectonic spacing 2 + 20 feet three gears, take its maximum value
3 welding structure space plus or minus 10 feet three gears, take its maximum value
Displacement of the center line of the five
Level elevation difference + 3 to 0
5 reinforced protective layer plus or minus 3 feet, quantity check
5 finished product protection
5.1 after bearing negative moment reinforcement tie up, not on the job or walk, and hold people care and repair, maintain its correct location.
5.2 hydropower pipeline installation, shall not be arbitrarily cut and displacement has good steel.
6 should pay attention to quality problems
6.1 support negative bending space position, should strengthen the finished product protection and set the bar stool, a moderate amount of encryption. Negative bending moment uneven spacing, the end is not in a straight line. Should strengthen the spacing between the logo and end thread binding.
6.2 rings two-way access phi 8 jin long, into the span length is insufficient, or end, long side short, reinforcement to correctly, binding to overcome obstacles, carefully into the span length, evenly on both ends.
Jilt a reinforced plastic composite plate is not standard 6.3: plate seam 5 through reinforcement is not straight, long tie not firm. Should be seriously in accordance with the provisions, plastic, adhere to the rational binding sequence.
7 quality records
This technology standard should have the following quality records:
7.1 steel quality certificate or test report.
7.2 steel (raw material, welding) test report.
7.3 steel inspection records.
7.4 steel component project technical disclosure.
7.5 steel component engineering quality inspection.
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