Double reinforced composite plate installation
1 scope
This technology is applicable to a variety of multi-storey and high-rise civil building composite floor or roof panel installation. The conditions for industrial buildings can also be used.
2 construction preparation
2.1 material and main equipments:
2.1.1 double reinforced composite board: a board thickness is divided into two series of 50 mm and 63 mm. Plane size based on three mode, 50 mm series, 4.2 m to 6.3 m long, wide, l. 5 m to 3.9 m., 72; Series of 63 mm, 4.2 m to 7.2 m long, 1.5 m to 3.9 m wide, a total of 99 kinds. Prefabricated composite plate composite surface concave and convex differential should have not less than 4 mm artificial rough surface, surface can not have loose layer and bleeding. Double reinforced composite plate to have the factory certificate.
2.1.2 bearing hard mode branch and the plate seam of wood, wood square, or finalize the pillar should be according to the construction plan.
2.1.3 machines; Vertical transportation machinery, steel tape, crowbar, etc.
2.2 operation conditions:
2.2.1 according to drawings, specifications, superimposed slab atlas and negotiation requirements, map composite plate installation. Which should show composite board plane position, type, the size of the joints, bearing on length, bearing hard mode branch location, temporary support, so that composite plate installation.
2.2.2 checks on the quality of composite plate: check the presence of cracks and defects, check the quality of the surface of the composite plate. Whoever does not meet the requirements of the quality shall not be used. And according to the installation drawing check composite plate type and specification.
Then check the wall or beam elevation and axis. Beam and ring beam reinforcement and completed implicit, preview the template.
2.2.4 superimposed slab pile and site requirements:
2.2.4.1 field should be copy in advance, the whole firm, built 3:7 and lime soil two steps.
2.2.4.2 heap fulcrum position with lifting point. Each composite plate under the composite board to close to the rings should be put on long stow-wood, alignment, up and down to is, mat, mat. Different number plate should be shelved, don't allow different overlap stacking number plate. Stacking height should be no greater than 6 layer. When conditions permit, should to go upstairs.
2.2.5 wall around the hard mode branch and makeup seam hard support and plates of temporary support, according to the construction scheme, the installation and finish preview.
3 operation process
3.1 process flow diagram:
Check bearings and joints stiff frame shuttering elevation to draw superimposed slab line of position, flat on the hoisting composite plate - >
Adjust the joints of composite plate reinforced the suspended length - finishing composite plate
3.2 aside on the bearing with composite board length is small (or not bearing), so the wall around the appropriate USES generally hard mode branch, general pillar and wall body for single row locking, spacing between 60-100 cm. Wall or beam top elevation should decline the l ~ 3 cm. Plate flat-fell seam place is also a hard frame support, generally for the double row pillars, spacing is 60 ~ 100 cm. Check carefully before assembling composite plate hard shuttering support system, check the wall or beam elevation, the axis, and the level of rigid frame shuttering stare blankly top surface elevation, and correction.
Line of position: 3.3 drawing composite board on the wall, beam or hard horizontal stare blankly side, according to the installation drawing plate seam line of position, and mark number plate. Makeup plate between the general need for 100 mm, such as board, can change between 80 mm to 170 mm. But more than 100 mm flat-fell seam should be placed close to plate edge on one side of the row. As shown in figure 4-39.
Figure 4-39 plate seam lien schematic diagram
3.4 superimposed slab hoisting in place: if the composite plate with reserved holes, find out its location before lifting, defined the direction of plate let. At the same time to check, removing the steel bar in place such as obstacles. Reserve should press when hoisting rings, to take eight rings synchronizing lifting way. But when, should make the composite plate on the designated by the composite board position line, according to the design bearing on annual slow fall in place, stable implementation.
3.5 adjust the superimposed slab joints of suspended length:
3.5.1 track of shaft bearing of the suspended length according to the requirements of drawings, gently adjusted. Tightening when it is necessary to use the crane hook line (but not support), supplemented by artificial shaft common on length adjustment.
3.5.2 drawings for bearing on length requirements, aside the plate on concrete members, generally to + 20 mm (that is, into the pedestal 20 mm). If board need, or between ~ + 30 mm to 50 mm. But if the wall thickness of 160 mm or less, drum supported edge should shelve length > 0. If must be smaller than - 50 mm, reinforcement length should be increased according to design requirements. On the length of the state as shown in figure 4-40.
3.5.3 in brick structure, board into the length of the bearing general should be greater than 50 mm.
3.6 according to the rules of design, finishing steel composite board has thrown around, not curved 90 °, nor shall it under pressure in the plate.
4 quality standards
Figure 4-40
4.1 ensure projects:
4.4.1 artifacts when lifting concrete strength must comply with the design requirements and construction norms.
Inspection method: inspect component factory certificates and test reports with condition maintenance test specimen.
4.1.2 seams superimposed slab concrete must be measured accurately, and cast close-grained, curing, its strength must meet the design requirements or construction norms.
Inspection method: observe and check the standard curing age 28 d block compression test report and record of construction.
4.1.3 composite plate type, location, protection anchor must comply with the design requirements, has no deformation failure phenomenon.
Inspection methods: observation or feet quantity inspection and check the lifting record.
4.2 the basic items:
Superimposed slab elevation, sit pulp, plate width, should comply with the design requirements and norms.
Inspection methods: observation, adequate inspection.
4.3 allowable deviation projects, see table 4-37.
Table 4-37
Will project allowable deviation check method (mm)
1 axis position displacement quantity of 5 'inspection
Layer 2 + 10 with high level or feet quantity check
Aside the 3 plate length + 10 feet quantity check
With grey 5
Don't plaster 3
5 finished product protection
5.1 superimposed slab pile and requirements should be strictly in accordance with clause 2.2.4 stacking area.
5.2 cast-in-situ wall, beam installation superimposed slab, the concrete strength to achieve 4 mpa in party construction.
5.3 composite board to jilt reinforcement (anchoring reinforcement) to be completed in the process of storage, transportation and loading for protection, shall not be repeated bend and break.
5.4 hoisting composite board, and shall not use "out", and more pieces of lifting. Should be used according to the reserved rings, synchronization of single block lifting of eight points. May not collision composite board in the trolley.
5.5 rigid frame shuttering plate supporting system of temporary support should be completed before the hoisting in place. Along every board to adding flux in the plate width take long wood shocked as a temporary support. All pillars in the bottom bedding shall be long scaffolding, and scaffolding for the foundation soil, leveling and compaction.
5.6 shall not be arbitrarily cut hole in the plate, such as the need to make hole on plate, mechanical drilling, and accordingly according to the requirements of design and atlas of reinforcement.
6 should pay attention to quality problems
6.1 overcome plate deflection, crack: hard mode branch and flat-fell seam support its epithelial elevation must be accurate, and must have enough stiffness, strength and stability, in order to make sure its not sink, not tilt.
6.2 overcome plate aside the bearing length, should be carefully adjusted when hoisting in place.
6.3 unqualified shall not be lifting plate in place, check carefully before assembly. Especially artificial roughness surface composite plate in accordance with the requirements, the loose layer and laitance should be cleared, to ensure that the concrete in composite surface combination is good.
7 quality records
This technology standard quality records should possess the following:
7.1 concrete components factory certificate.
7.2 structure lifting record.
7.3 prefabricated hoisting construction engineering.
7.4 component project technical disclosure.
7.5 kinds of construction quality test evaluation.
1 scope
This technology is applicable to a variety of multi-storey and high-rise civil building composite floor or roof panel installation. The conditions for industrial buildings can also be used.
2 construction preparation
2.1 material and main equipments:
2.1.1 double reinforced composite board: a board thickness is divided into two series of 50 mm and 63 mm. Plane size based on three mode, 50 mm series, 4.2 m to 6.3 m long, wide, l. 5 m to 3.9 m., 72; Series of 63 mm, 4.2 m to 7.2 m long, 1.5 m to 3.9 m wide, a total of 99 kinds. Prefabricated composite plate composite surface concave and convex differential should have not less than 4 mm artificial rough surface, surface can not have loose layer and bleeding. Double reinforced composite plate to have the factory certificate.
2.1.2 bearing hard mode branch and the plate seam of wood, wood square, or finalize the pillar should be according to the construction plan.
2.1.3 machines; Vertical transportation machinery, steel tape, crowbar, etc.
2.2 operation conditions:
2.2.1 according to drawings, specifications, superimposed slab atlas and negotiation requirements, map composite plate installation. Which should show composite board plane position, type, the size of the joints, bearing on length, bearing hard mode branch location, temporary support, so that composite plate installation.
2.2.2 checks on the quality of composite plate: check the presence of cracks and defects, check the quality of the surface of the composite plate. Whoever does not meet the requirements of the quality shall not be used. And according to the installation drawing check composite plate type and specification.
Then check the wall or beam elevation and axis. Beam and ring beam reinforcement and completed implicit, preview the template.
2.2.4 superimposed slab pile and site requirements:
2.2.4.1 field should be copy in advance, the whole firm, built 3:7 and lime soil two steps.
2.2.4.2 heap fulcrum position with lifting point. Each composite plate under the composite board to close to the rings should be put on long stow-wood, alignment, up and down to is, mat, mat. Different number plate should be shelved, don't allow different overlap stacking number plate. Stacking height should be no greater than 6 layer. When conditions permit, should to go upstairs.
2.2.5 wall around the hard mode branch and makeup seam hard support and plates of temporary support, according to the construction scheme, the installation and finish preview.
3 operation process
3.1 process flow diagram:
Check bearings and joints stiff frame shuttering elevation to draw superimposed slab line of position, flat on the hoisting composite plate - >
Adjust the joints of composite plate reinforced the suspended length - finishing composite plate
3.2 aside on the bearing with composite board length is small (or not bearing), so the wall around the appropriate USES generally hard mode branch, general pillar and wall body for single row locking, spacing between 60-100 cm. Wall or beam top elevation should decline the l ~ 3 cm. Plate flat-fell seam place is also a hard frame support, generally for the double row pillars, spacing is 60 ~ 100 cm. Check carefully before assembling composite plate hard shuttering support system, check the wall or beam elevation, the axis, and the level of rigid frame shuttering stare blankly top surface elevation, and correction.
Line of position: 3.3 drawing composite board on the wall, beam or hard horizontal stare blankly side, according to the installation drawing plate seam line of position, and mark number plate. Makeup plate between the general need for 100 mm, such as board, can change between 80 mm to 170 mm. But more than 100 mm flat-fell seam should be placed close to plate edge on one side of the row. As shown in figure 4-39.
Figure 4-39 plate seam lien schematic diagram
3.4 superimposed slab hoisting in place: if the composite plate with reserved holes, find out its location before lifting, defined the direction of plate let. At the same time to check, removing the steel bar in place such as obstacles. Reserve should press when hoisting rings, to take eight rings synchronizing lifting way. But when, should make the composite plate on the designated by the composite board position line, according to the design bearing on annual slow fall in place, stable implementation.
3.5 adjust the superimposed slab joints of suspended length:
3.5.1 track of shaft bearing of the suspended length according to the requirements of drawings, gently adjusted. Tightening when it is necessary to use the crane hook line (but not support), supplemented by artificial shaft common on length adjustment.
3.5.2 drawings for bearing on length requirements, aside the plate on concrete members, generally to + 20 mm (that is, into the pedestal 20 mm). If board need, or between ~ + 30 mm to 50 mm. But if the wall thickness of 160 mm or less, drum supported edge should shelve length > 0. If must be smaller than - 50 mm, reinforcement length should be increased according to design requirements. On the length of the state as shown in figure 4-40.
3.5.3 in brick structure, board into the length of the bearing general should be greater than 50 mm.
3.6 according to the rules of design, finishing steel composite board has thrown around, not curved 90 °, nor shall it under pressure in the plate.
4 quality standards
Figure 4-40
4.1 ensure projects:
4.4.1 artifacts when lifting concrete strength must comply with the design requirements and construction norms.
Inspection method: inspect component factory certificates and test reports with condition maintenance test specimen.
4.1.2 seams superimposed slab concrete must be measured accurately, and cast close-grained, curing, its strength must meet the design requirements or construction norms.
Inspection method: observe and check the standard curing age 28 d block compression test report and record of construction.
4.1.3 composite plate type, location, protection anchor must comply with the design requirements, has no deformation failure phenomenon.
Inspection methods: observation or feet quantity inspection and check the lifting record.
4.2 the basic items:
Superimposed slab elevation, sit pulp, plate width, should comply with the design requirements and norms.
Inspection methods: observation, adequate inspection.
4.3 allowable deviation projects, see table 4-37.
Table 4-37
Will project allowable deviation check method (mm)
1 axis position displacement quantity of 5 'inspection
Layer 2 + 10 with high level or feet quantity check
Aside the 3 plate length + 10 feet quantity check
With grey 5
Don't plaster 3
5 finished product protection
5.1 superimposed slab pile and requirements should be strictly in accordance with clause 2.2.4 stacking area.
5.2 cast-in-situ wall, beam installation superimposed slab, the concrete strength to achieve 4 mpa in party construction.
5.3 composite board to jilt reinforcement (anchoring reinforcement) to be completed in the process of storage, transportation and loading for protection, shall not be repeated bend and break.
5.4 hoisting composite board, and shall not use "out", and more pieces of lifting. Should be used according to the reserved rings, synchronization of single block lifting of eight points. May not collision composite board in the trolley.
5.5 rigid frame shuttering plate supporting system of temporary support should be completed before the hoisting in place. Along every board to adding flux in the plate width take long wood shocked as a temporary support. All pillars in the bottom bedding shall be long scaffolding, and scaffolding for the foundation soil, leveling and compaction.
5.6 shall not be arbitrarily cut hole in the plate, such as the need to make hole on plate, mechanical drilling, and accordingly according to the requirements of design and atlas of reinforcement.
6 should pay attention to quality problems
6.1 overcome plate deflection, crack: hard mode branch and flat-fell seam support its epithelial elevation must be accurate, and must have enough stiffness, strength and stability, in order to make sure its not sink, not tilt.
6.2 overcome plate aside the bearing length, should be carefully adjusted when hoisting in place.
6.3 unqualified shall not be lifting plate in place, check carefully before assembly. Especially artificial roughness surface composite plate in accordance with the requirements, the loose layer and laitance should be cleared, to ensure that the concrete in composite surface combination is good.
7 quality records
This technology standard quality records should possess the following:
7.1 concrete components factory certificate.
7.2 structure lifting record.
7.3 prefabricated hoisting construction engineering.
7.4 component project technical disclosure.
7.5 kinds of construction quality test evaluation.
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