CN112302210A - Assembled built-in corrugated steel plate reinforced concrete cross-section member and construction process - Google Patents
Assembled built-in corrugated steel plate reinforced concrete cross-section member and construction process Download PDFInfo
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- CN112302210A CN112302210A CN202011312933.6A CN202011312933A CN112302210A CN 112302210 A CN112302210 A CN 112302210A CN 202011312933 A CN202011312933 A CN 202011312933A CN 112302210 A CN112302210 A CN 112302210A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 250
- 239000010959 steel Substances 0.000 title claims abstract description 250
- 239000011150 reinforced concrete Substances 0.000 title claims abstract description 51
- 238000010276 construction Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 12
- 230000008569 process Effects 0.000 title claims abstract description 8
- 239000004567 concrete Substances 0.000 claims abstract description 58
- 238000005452 bending Methods 0.000 claims description 10
- 210000001503 joint Anatomy 0.000 claims description 9
- 239000011241 protective layer Substances 0.000 claims description 8
- 239000002245 particle Substances 0.000 claims description 5
- 238000003466 welding Methods 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 3
- 239000011372 high-strength concrete Substances 0.000 claims description 2
- 239000011376 self-consolidating concrete Substances 0.000 claims description 2
- 230000007547 defect Effects 0.000 description 4
- 230000008901 benefit Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000010008 shearing Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000011065 in-situ storage Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
- E04B2/60—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members
- E04B2/62—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal characterised by special cross-section of the elongated members the members being formed of two or more elements in side-by-side relationship
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/64—Insulation or other protection; Elements or use of specified material therefor for making damp-proof; Protection against corrosion
- E04B1/642—Protecting metallic construction elements against corrosion
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/62—Insulation or other protection; Elements or use of specified material therefor
- E04B1/66—Sealings
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B2/00—Walls, e.g. partitions, for buildings; Wall construction with regard to insulation; Connections specially adapted to walls
- E04B2/56—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members
- E04B2/58—Load-bearing walls of framework or pillarwork; Walls incorporating load-bearing elongated members with elongated members of metal
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- Engineering & Computer Science (AREA)
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Abstract
The invention discloses an assembled cross-section member with a built-in corrugated steel plate reinforced concrete and a construction process, wherein the assembled cross-section member comprises a corrugated steel plate, concrete, batten strips and horizontal butt-joint steel plates; the four corrugated steel plates are vertically spliced together, and steel batten strips are welded on the side surfaces of the corrugated steel plates to form a ten-shaped steel framework, wherein the corrugated steel plates are in an isosceles trapezoid shape; concrete is poured on the cross-shaped steel framework to form the assembled built-in corrugated steel plate reinforced concrete cross-shaped section component. According to the invention, the corrugated steel plate is used for replacing vertical distribution ribs and longitudinal ribs in the special-shaped column of the traditional shear wall to form the area constraint concrete, so that the constraint strength of the concrete can be effectively improved, and the vertical load bearing capacity of the member is greatly improved.
Description
Technical Field
The invention relates to the field of building fabricated structure design, in particular to a fabricated built-in corrugated steel plate reinforced concrete cross-section member and a construction process.
Background
Nowadays, with the rapid development of building industrialization represented by assembly type buildings in China, the application of the assembly type shear wall structure building in civil houses is more extensive. The assembled shear wall structure is mainly used for buildings such as high-rise and small high-rise residential houses and has the advantages of high industrialization degree, controllable cost, higher construction speed than a cast-in-place shear wall and the like. However, the existing fabricated shear wall has many defects in construction, such as: the connection is more complicated, the quantity of projects at the nodes is more, the construction efficiency is low, the construction precision is not good enough, the technical requirements on workers are high, and the like.
Meanwhile, the assembled shear wall and the special-shaped column component have a plurality of defects in the aspect of structural stress:
1. the overall rigidity of the fabricated shear wall and the special-shaped column is poorer than that of a cast-in-place structure. Particularly, the rigidity is easy to suddenly change at the joint of the upper member and the lower member, so that the shear slip damage is easy to occur at the position of the sudden change of the rigidity of the shear wall.
2. In the case of a shear wall member with a relatively large axial compression ratio, buckling failure may occur in the fabricated shear wall member, and at this time, the stressed steel bars are buckled, and the concrete is crushed, which may eventually lead to structural failure.
3. When the assembled shear wall is low, under the action of horizontal force, an oblique diagonal crack or a cross oblique crack appears on the wall, so that concrete is crushed, blocks are stripped, stirrups bulge or break, and finally the component is subjected to shear oblique pressure damage.
Therefore, in order to overcome the conventional defects, a new fabricated shear wall structure and a new construction method are urgently needed, so that the construction quality and efficiency are improved, and the stress performance of the fabricated shear wall structure is enhanced.
Disclosure of Invention
The purpose of the invention is as follows: in order to overcome the defects in the prior art, the invention provides an assembled built-in corrugated steel plate reinforced concrete cross-section member and a construction process, wherein the assembled built-in corrugated steel plate reinforced concrete cross-section member has good overall performance, shock resistance and bearing capacity, can be produced in a factory on a large scale, is convenient to construct and install, greatly shortens the construction period, improves the efficiency, and is beneficial to building industrialization and development of assembled buildings.
The technical scheme adopted by the invention is as follows: an assembled cross-section member with a built-in corrugated steel plate reinforced concrete comprises a corrugated steel plate, concrete, batten strips and horizontal butt-joint steel plates;
the four corrugated steel plates are vertically spliced together, and steel batten strips are welded on the side surfaces of the corrugated steel plates to form a ten-shaped steel framework, wherein the corrugated steel plates are in an isosceles trapezoid shape;
concrete is poured on the cross-shaped steel framework to form the assembled built-in corrugated steel plate reinforced concrete cross-shaped section component; the integrity of the steel skeleton can be better ensured, the concrete is better restrained, and the mechanical engaging force between the corrugated steel plate and the concrete is increased, so that the bearing capacity of the component is improved.
The crossed steel skeleton is in a crossed area in two orthogonal directions of the crossed section, the steel lacing bars are arranged in a staggered and through mode, longitudinal steel bars are configured at the positions close to the staggered steel lacing bars in a staggered mode, a structure similar to stirrups and longitudinal steel bars is formed, the bearing capacity of the crossed area is enhanced, and the overall performance of the member is improved. The distance between the end part of the corrugated steel plate and the longitudinal bar is about 40mm, so that the pouring and the vibrating of concrete are facilitated.
The corrugated steel plate is changed into a vertical steel plate vertical to the length direction of the column limb or the wall limb at the end part of the wall limb or the column limb so as to enhance the strength and the stability of the end part of the cross-shaped profiled steel plate member;
the upper end and the lower end of the corrugated steel plate are welded with horizontal butt-joint steel plates, the outer side surfaces of the horizontal butt-joint steel plates are flush with the end parts of the corrugated steel plates, and the clear sections of the horizontal butt-joint steel plates are provided with bolt holes;
the thickness interval of the corrugated steel plate is 4-6 mm, and the corrugated steel plate has good ductility. The thin steel plate can also realize the integral weight reduction of the structure and reduce the cost. The thickness of the transverse concrete protective layer along the column and the beam is 30mm, and the value range of the thickness of the longitudinal concrete protective layer along the column and the beam is 40-50 mm;
the thickness of the assembled built-in corrugated steel plate reinforced concrete cross-section component is 200-300 mm, and the assembled built-in corrugated steel plate reinforced concrete cross-section components which are adjacent up and down are connected through connecting bolts.
Preferably, the ratio of the length h of the column body of the column to the thickness b of the column is less than or equal to 4, the maximum bending angle of a corrugated steel plate arranged in the column is 30 degrees, the wavelength of the corrugated steel plate at the non-connecting end of the corrugated steel plate is 40mm to 60mm, the grading of concrete poured in the corrugated steel plate is two-grade, the maximum particle size of coarse aggregate is not more than 25mm, and the horizontal butt-joint steel plates are fully distributed at the upper end and the lower end of the corrugated steel plate arranged in the column.
Preferably, the ratio of the wall length h to the wall thickness b of the wall is between 4 and 6, the maximum bending angle of the corrugated steel plate arranged in the wall is 45 degrees, the wavelength of the corrugated steel plate at the non-connecting end of the corrugated steel plate is 50mm to 80mm, the grading of concrete poured in the corrugated steel plate is two grades, and the maximum particle size of coarse aggregate is not more than 30 mm; the horizontal butt-joint steel plate is arranged at the upper end part and the lower end part of the corrugated steel plate arranged in the wall at intervals of at most two corrugations, and the arrangement of the two sides of the corrugated steel plate is ensured.
Therefore, when concrete is poured, the coarse aggregate in the concrete can not be clamped by the corrugated steel plate, and the concrete is convenient to vibrate.
Preferably, the section of the steel lacing bar is circular, the diameter of the steel lacing bar is 6mm to 12 mm, and the space between lacing bars is 100 mm to 200 mm.
Preferably, the steel lacing bars are welded along the whole length of the corrugated steel plate, and lacing bars in two orthogonal directions are staggered with each other, wherein the staggered distance is about one half of the space between lacing bars.
Preferably, the thickness of the horizontally butted steel plates is 6mm to 8 mm.
Preferably, the connection between the horizontal butt-joint steel plate and the corrugated steel plate is strengthened by a triangular stiffening rib, the triangular stiffening rib is in the shape of an isosceles right triangle, and two right-angle sides are respectively welded with the corrugated steel plate and the horizontal butt-joint steel plate. The rigidity and the stability of the horizontal steel plate are improved, and dislocation caused by insufficient rigidity of the horizontal steel plate in connection is prevented.
Preferably, the connecting bolts are high-strength bolts.
Preferably, the concrete can be ordinary concrete, self-compacting concrete or high-strength concrete.
Therefore, different concretes can be selected according to different working conditions, and the application range of the frame column and the shear wall is expanded.
The construction process of the fabricated built-in corrugated steel plate reinforced concrete cross-section member comprises the following steps:
the method comprises the following steps: prefabricating a cross-shaped steel skeleton in a factory, pouring concrete to form an assembled built-in corrugated steel plate reinforced concrete cross-shaped section member, and reserving steel plates with the lengths of 100 millimeters at the upper end part and the lower end part of the assembled built-in corrugated steel plate reinforced concrete cross-shaped section member for on-site splicing;
step two: when in on-site assembly, firstly, hoisting an assembled built-in corrugated steel plate reinforced concrete cross-section member to align the reserved bolt holes of the upper and lower cross-shaped steel frameworks;
step three: after the assembled built-in corrugated steel plate reinforced concrete cross-section component is in place, long and short inclined supports are installed, and the perpendicularity of the assembled built-in corrugated steel plate reinforced concrete cross-section component is adjusted through the support length;
step four: fixing an upper assembled built-in corrugated steel plate reinforced concrete cross-section member and a lower assembled built-in corrugated steel plate reinforced concrete cross-section member which are the same by using connecting bolts through bolt holes of horizontally butted steel plates at the upper end and the lower end, and then connecting the members into a whole in a welding mode;
step five: supporting a template at the connecting node and sticking a waterproof coiled material;
step six: and finally, the concrete cast-in-place connecting joint with the strength grade higher than that of the fabricated built-in corrugated steel plate reinforced concrete cross-section member is used.
The invention has the beneficial effects that:
1. the corrugated steel plate is used for replacing vertical distribution ribs and longitudinal ribs in the special-shaped column of the traditional shear wall to form the regional confined concrete, so that the confined strength of the concrete can be effectively improved, and the vertical load bearing capacity of the member is greatly improved;
2. the batten strips are arranged on two sides of the corrugated steel plate to play a role similar to stirrups, further restrain the concrete deformation and enhance the mechanical engaging force between the corrugated steel plate and the concrete, so that the bearing capacity of the member is improved.
3. The corrugated steel plate is in a wave shape along the length direction of the pipe, so that the bending resistance inertia moment of the steel plate is increased, and the steel plate has higher bearing capacity and stability, thereby reducing the occurrence of damages such as buckling of the shear wall, out-of-plane instability and the like.
4. The shearing resistance of the corrugated steel plate is stronger than that of a straight steel plate, and when the same shearing resistance requirement is met, the steel consumption of the corrugated steel plate is smaller than that of the straight steel plate, so that steel is saved, and the economic benefit is improved.
5. Horizontal steel plates with bolt holes are welded at the upper end and the lower end of the cross-section component, are fixed by bolts and are connected by welding, and finally, concrete is integrally connected, so that the structural integrity is good, and the corrosion resistance is good.
Drawings
FIG. 1 is a schematic view of a section steel framework of an assembled cross-shaped wall with corrugated steel plate reinforced concrete inside;
FIG. 2 is a schematic view of a section steel framework of an assembled cross-shaped column with a corrugated steel plate reinforced concrete built in;
FIG. 3 is a schematic view of an assembled cross-wall of internally corrugated steel reinforced concrete;
FIG. 4 is a schematic view of an assembled cross-post of internally corrugated steel reinforced concrete;
FIG. 5 is a plan view of an assembled cross-wall of reinforced concrete with corrugated steel plates inside;
FIG. 6 is a plan view of an assembled cross-shaped column of internally corrugated steel reinforced concrete;
FIG. 7 is a schematic view of the connection of assembled cross-shaped columns and wall members with corrugated steel plate reinforced concrete built-in;
description of reference numerals: 1-corrugated steel plate, 2-batten strip, 3-horizontal butt joint steel plate, 4-bolt hole, 5-triangular stiffening rib, 6-longitudinal steel bar, 7-longitudinal concrete protective layer, 8-transverse concrete protective layer, 9-bending angle, 10-wavelength, 11-connecting bolt and 12-concrete.
Detailed Description
For a better understanding of the invention, it will be further illustrated by the following examples and the accompanying drawings:
example 1
As shown in fig. 1, 3, 5 and 7, the present embodiment discloses a corrugated steel plate 1, a concrete 12, a batten strip 2 and a horizontal butt steel plate 3; the four corrugated steel plates 1 are vertically spliced together, and steel batten strips 2 are welded on the side surfaces of the corrugated steel plates 1 to form a ten-shaped steel framework, wherein the corrugated steel plates 1 are in an isosceles trapezoid shape;
concrete 12 is poured on the cross-shaped steel framework to form the assembled built-in corrugated steel plate reinforced concrete cross-shaped section component; the integrity of the steel skeleton can be better ensured, the concrete is better restrained, and the mechanical engaging force between the corrugated steel plate and the concrete is increased, so that the bearing capacity of the component is improved.
The crossed steel skeleton is in a crossed area in two orthogonal directions of the crossed section, the steel lacing bars 2 are arranged in a staggered and through mode, longitudinal steel bars 6 are configured at the positions close to the staggered steel lacing bars 2, a structure similar to a stirrup and a longitudinal steel bar is formed, the bearing capacity of the crossed area is enhanced, and the overall performance of the member is improved. The end of the corrugated steel plate 1 is about 40mm away from the longitudinal steel bar 6, which facilitates the pouring and vibrating of the concrete 12.
The corrugated steel plate 1 is changed into a vertical steel plate vertical to the length direction of the column limb or the wall limb at the end part of the wall limb or the column limb so as to enhance the strength and the stability of the end part of the cross-shaped profiled steel plate member; horizontal butt joint steel plates 3 are welded at the upper end and the lower end of the cross-shaped special-shaped steel plate, the outer side surfaces of the horizontal butt joint steel plates 3 are flush with the end parts of the corrugated steel plates 1, and bolt holes 4 are formed in the clear sections of the horizontal butt joint steel plates 3; the upper and lower adjacent fabricated built-in corrugated steel plate reinforced concrete cross-section members are connected through connecting bolts 11.
The assembled ten-shaped wall member with the built-in corrugated steel plates in the embodiment has the advantages that the length of the wall body is 1721mm, the wall thickness is 300mm, the ratio of the length h of the wall body to the wall thickness b is between 4 and 6, the thickness of the corrugated steel plates 1 arranged in the wall body is 4-6 mm, and the waveform is isosceles trapezoid. The diameter of each steel lacing strip 2 is 6-8 mm, and the distance between every two steel lacing strips 2 is 100-150 mm. During welding, the steel batten strips 2 are welded along the full length of the corrugated steel plate, the steel batten strips 2 in two orthogonal directions are staggered with each other, and the staggered distance is about half of the distance between the steel batten strips 2.
The concrete poured by the cross-shaped wall member is graded into a second grade, and the maximum grain size of the coarse aggregate is not more than 30 mm. In order to ensure that the concrete can be smoothly vibrated and compacted, the wavelength 10 of the corrugated steel plate arranged in the cross-shaped wall member is 50-80 mm, and the maximum bending angle 9 is 45 degrees.
The thickness of the horizontal butt joint steel plate 3 is 6-8 mm, and a circular bolt hole 4 with the diameter of 30-35 mm is formed in the horizontal butt joint steel plate. The horizontal butt joint steel plate 3 is arranged at the upper end part and the lower end part of the corrugated steel plate arranged in the cross-shaped wall member at intervals by at most two corrugations, and the arrangement of the two sides of the corrugated steel plate is ensured simultaneously so as to ensure the integral performance of member connection.
A triangular stiffening rib 5 is additionally arranged between the horizontal butt joint steel plate 3 and the corrugated steel plate. The triangular stiffening ribs 5 are isosceles right-angled triangles, the lengths of the right-angle sides are 60-80 mm, one stiffening rib is arranged on each side of the isosceles trapezoid of the corrugated steel plate waveform, and the two right-angle sides are respectively welded with the corrugated steel plate and the horizontal steel plate.
When concrete is poured in a factory, the thickness of the concrete protective layer 7 along the longitudinal direction of the wall is guaranteed to be 40-50 mm, and the thickness of the concrete protective layer 8 along the longitudinal direction of the wall is guaranteed to be 30 mm. The strength grade of the concrete 12 poured in the cross-shaped wall steel framework is preferably C50 or above.
The construction process of the assembled cross-shaped wall member with the internally-arranged corrugated steel plates comprises the following steps:
the method comprises the following steps: prefabricating a cross-shaped profiled steel plate in a factory, pouring concrete to form an assembled cross-shaped wall member with a built-in corrugated steel plate, and reserving steel plates with the length of 100 mm at the upper end part and the lower end part of the assembled cross-shaped wall member with the built-in corrugated steel plate for on-site splicing;
step two: when assembling on site, firstly, hoisting the assembled cross-shaped wall member with the built-in corrugated steel plates to align the reserved bolt holes of the upper and lower cross-shaped profiled steel plates;
step three: after the assembled cross-shaped wall component with the built-in corrugated steel plates is in place, long and short inclined supports are installed, and the perpendicularity of the assembled cross-shaped wall component with the built-in corrugated steel plates is adjusted through the support length;
step four: fixing an upper assembled built-in corrugated steel plate cross-shaped wall component and a lower assembled built-in corrugated steel plate cross-shaped wall component which are the same by connecting bolts through bolt holes of horizontally butted steel plates at the upper end and the lower end, and connecting the upper assembled built-in corrugated steel plate cross-shaped wall component and the lower assembled built-in corrugated steel plate cross-shaped wall component into a;
step five: supporting a template at the connecting node and sticking a waterproof coiled material;
step six: and finally, pouring the connecting node in situ by using concrete which is higher than the prefabricated built-in corrugated steel plate cross-shaped wall member by one strength grade.
Example 2
As shown in fig. 2, 4, 6, and 7, the present embodiment discloses an assembled cross-shaped column member reinforced with corrugated steel plates, which is different from embodiment 1 in that the length of the column body of the assembled cross-shaped column member reinforced with corrugated steel plates is 1043mm, the column thickness is 300mm, the ratio of the length h of the column body to the column thickness b is less than or equal to 4, the thickness of the corrugated steel plates 1 disposed therein is 4-6 mm, and the waveform is an isosceles trapezoid. The concrete poured by the cross-shaped column member is graded into a second grade, and the maximum grain size of the coarse aggregate is not more than 25 mm. In order to ensure that the concrete can be smoothly vibrated and compacted, the wavelength 10 of the corrugated steel plate arranged in the cross-shaped column member is 40-60 mm, and the maximum bending angle 9 is 30 degrees.
In the above 2 embodiments, for the fabricated cross-section member of the reinforced concrete with the built-in corrugated steel plate, the requirement of the column member for the bearing capacity is greater than that of the wall member, so that the requirement of the bending angle of the corrugated steel plate is smaller, the requirement of the wavelength is longer to obtain a larger bending moment of inertia, and the bearing capacity and the lateral stiffness are improved. Accordingly, in order to ensure that the coarse aggregate in the concrete is not caught by the corrugated steel plate when the concrete is poured, the maximum particle size of the coarse aggregate is required to be smaller than that of the wall member.
The invention is not described in detail, but is well known to those skilled in the art.
The foregoing detailed description of the preferred embodiments of the invention has been presented. It should be understood that numerous modifications and variations could be devised by those skilled in the art in light of the present teachings without departing from the inventive concepts. Therefore, the technical solutions available to those skilled in the art through logic analysis, reasoning and limited experiments based on the prior art according to the concept of the present invention should be within the scope of protection defined by the claims.
Claims (10)
1. The utility model provides a ten shape cross-section members of built-in corrugated steel plate reinforced concrete of assembled which characterized in that: the steel plate comprises corrugated steel plates, concrete, batten strips and horizontal butt-joint steel plates;
the four corrugated steel plates are vertically spliced together, and steel batten strips are welded on the side surfaces of the corrugated steel plates to form a ten-shaped steel framework, wherein the corrugated steel plates are in an isosceles trapezoid shape;
concrete is poured on the cross-shaped steel framework to form the assembled built-in corrugated steel plate reinforced concrete cross-shaped section component;
the crossed steel skeleton is arranged in a crossed area of two orthogonal directions of the crossed section, the steel batten strips are arranged in a staggered and through mode, longitudinal steel bars are arranged at staggered positions close to the steel batten strips, and the distance between the end portions of the corrugated steel plates and the longitudinal steel bars is 40 mm;
the corrugated steel plate is changed into a vertical steel plate vertical to the length direction of the column limb or the wall limb at the end part of the column limb or the column limb;
the upper end and the lower end of the corrugated steel plate are welded with horizontal butt-joint steel plates, the outer side surfaces of the horizontal butt-joint steel plates are flush with the end parts of the corrugated steel plates, and the clear sections of the horizontal butt-joint steel plates are provided with bolt holes;
the thickness of the corrugated steel plate ranges from 4 to 6 millimeters, the thickness of the transverse concrete protective layer along the column and the beam ranges from 30 millimeters, and the thickness of the longitudinal concrete protective layer along the column and the beam ranges from 40 to 50 millimeters;
the thickness of the assembled built-in corrugated steel plate reinforced concrete cross-section component is 200-300 mm, and the assembled built-in corrugated steel plate reinforced concrete cross-section components which are adjacent up and down are connected through connecting bolts.
2. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the ratio of the length h of the column body of the column to the thickness b of the column is less than or equal to 4, the maximum bending angle of a corrugated steel plate arranged in the column is 30 degrees, the wavelength of the corrugated steel plate at the non-connecting end of the corrugated steel plate is 40mm to 60mm, the concrete cast in the corrugated steel plate is graded into two grades, the maximum particle size of coarse aggregate is not more than 25mm, and the upper end part and the lower end part of the corrugated steel plate arranged in the column are fully distributed with the horizontal butt-joint steel plates.
3. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the ratio of the wall length h to the wall thickness b of the wall is between 4 and 6, the maximum bending angle of a corrugated steel plate arranged in the wall is 45 degrees, the wavelength of the corrugated steel plate at the non-connecting end of the corrugated steel plate is 50mm to 80mm, the concrete cast in the corrugated steel plate is graded into a second grade, and the maximum particle size of coarse aggregate is not more than 30 mm; the horizontal butt-joint steel plate is arranged at the upper end part and the lower end part of the corrugated steel plate arranged in the wall at intervals of at most two corrugations, and the arrangement of the two sides of the corrugated steel plate is ensured.
4. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the section of each steel lacing bar is circular, the diameter of each steel lacing bar is 6mm to 12 mm, and the distance between lacing bars is 100 mm to 200 mm.
5. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the steel lacing bars are welded along the full length of the corrugated steel plate, the lacing bars in two orthogonal directions are staggered, and the staggered distance is about one half of the space between the lacing bars.
6. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the thickness of the horizontal butt joint steel plate is 6mm to 8 mm.
7. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the connection between the horizontal butt-joint steel plate and the corrugated steel plate is strengthened through a triangular stiffening rib, the triangular stiffening rib is in the shape of an isosceles right triangle, and two right-angle sides are respectively welded with the corrugated steel plate and the horizontal butt-joint steel plate.
8. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the connecting bolts are high-strength bolts.
9. The fabricated cross-sectional, internally corrugated, steel plate reinforced concrete member of claim 1, wherein: the concrete is common concrete, self-compacting concrete or high-strength concrete.
10. The construction process of the fabricated built-in deck plate reinforced concrete cross-section member as claimed in claim 1, 2, 3, 4, 5, 6, 7, 8 or 9, wherein: the method comprises the following steps:
the method comprises the following steps: prefabricating a cross-shaped profiled steel plate in a factory and pouring concrete to form an assembled built-in corrugated steel plate reinforced concrete cross-section member, and reserving steel plates with the lengths of 100 millimeters at the upper end part and the lower end part of the built-in corrugated steel plate reinforced concrete cross-section member for on-site splicing;
step two: when in on-site assembly, firstly, hoisting an assembled built-in corrugated steel plate reinforced concrete cross-section member to align the bolt holes reserved in an upper crossed special-shaped steel plate and a lower crossed special-shaped steel plate;
step three: after the assembled built-in corrugated steel plate reinforced concrete cross-section component is in place, long and short inclined supports are installed, and the perpendicularity of the assembled built-in corrugated steel plate reinforced concrete cross-section component is adjusted through the support length;
step four: fixing an upper assembled built-in corrugated steel plate reinforced concrete cross-section member and a lower assembled built-in corrugated steel plate reinforced concrete cross-section member which are the same by using connecting bolts through bolt holes of horizontally butted steel plates at the upper end and the lower end, and then connecting the members into a whole in a welding mode;
step five: supporting a template at the connecting node and sticking a waterproof coiled material;
step six: and finally, the concrete cast-in-place connecting joint with the strength grade higher than that of the fabricated built-in corrugated steel plate reinforced concrete cross-section member is used.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983116A (en) * | 2021-03-01 | 2021-06-18 | 常州工学院 | Prefabricated corrugated steel plate lattice type enclosure structure and construction method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983116A (en) * | 2021-03-01 | 2021-06-18 | 常州工学院 | Prefabricated corrugated steel plate lattice type enclosure structure and construction method thereof |
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