CN112267618A - Assembled built-in corrugated steel plate reinforced concrete vertical folded column, wall and construction process - Google Patents
Assembled built-in corrugated steel plate reinforced concrete vertical folded column, wall and construction process Download PDFInfo
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- CN112267618A CN112267618A CN202011308340.2A CN202011308340A CN112267618A CN 112267618 A CN112267618 A CN 112267618A CN 202011308340 A CN202011308340 A CN 202011308340A CN 112267618 A CN112267618 A CN 112267618A
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04C—STRUCTURAL ELEMENTS; BUILDING MATERIALS
- E04C3/00—Structural elongated elements designed for load-supporting
- E04C3/30—Columns; Pillars; Struts
- E04C3/36—Columns; Pillars; Struts of materials not covered by groups E04C3/32 or E04C3/34; of a combination of two or more materials
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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
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
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Abstract
本发明公开了一种装配式内置波纹钢板增强混凝土垂直折形柱、墙及施工工艺，包括垂直折形异型钢板、波纹钢板、混凝土、钢缀条和水平对接钢板；所述垂直折形异型钢板为装配式构件，包括L形异型钢板和Z形异型钢板；所述L形异型钢板由两块波纹钢板的端部垂直相交连接构成，所述Z形异型钢板由三块波纹钢板的端部依次垂直相交连接构成；两块所述波纹钢板连接端设有钢节点，所述垂直折形异型钢板的侧表面焊接有钢缀条形成钢骨架，在所述钢骨架上浇筑混凝土形成所述装配式内置波纹钢板增强混凝土垂直折形柱、墙。本发明用波纹钢板代替传统柱、剪力墙的竖向钢筋和部分横向钢筋，形成区域约束混凝土从而提高构件的承载能力和抗侧刚度。
The invention discloses an assembled built-in corrugated steel plate reinforced concrete vertical folded column, wall and construction process, including vertical folded special-shaped steel plate, corrugated steel plate, concrete, steel strips and horizontal butt-jointed steel plate; the vertical folded special-shaped steel plate; It is a prefabricated component, including an L-shaped special-shaped steel plate and a Z-shaped special-shaped steel plate; the L-shaped special-shaped steel plate is formed by the vertical intersection of the ends of two corrugated steel plates, and the Z-shaped special-shaped steel plate is composed of three corrugated steel plates. It is constituted by a vertical intersection connection; the connecting ends of the two corrugated steel plates are provided with steel nodes, the side surfaces of the vertical folded special-shaped steel plates are welded with steel studs to form a steel skeleton, and concrete is poured on the steel skeleton to form the assembled type Built-in corrugated steel plate reinforced concrete vertical folding column and wall. In the invention, corrugated steel plates are used to replace the vertical steel bars and part of the transverse steel bars of traditional columns and shear walls, so as to form regional confinement concrete so as to improve the bearing capacity and lateral stiffness of the components.
Description
Technical Field
The invention relates to the field of building assembled structure design, in particular to an assembled built-in corrugated steel plate reinforced concrete vertical folded column, wall and 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 disadvantages, such as: the bearing capacity and the lateral stiffness are poorer than those of a cast-in-place shear wall structure, the connection is more complex, the engineering quantity at the node is more, the construction efficiency is low, the construction precision is not good enough, 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 the construction efficiency are improved, and the stress performance 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 vertical folded column, wall and construction process.
The technical scheme adopted by the invention is as follows: an assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall comprises a vertical folded profiled steel plate, a corrugated steel plate, concrete, batten strips and a horizontal butt-joint steel plate;
the vertical folded special-shaped steel plate is an assembled component and comprises an L-shaped special-shaped steel plate and a Z-shaped special-shaped steel plate; the L-shaped deformed steel plate is formed by vertically connecting the end parts of two corrugated steel plates, and the Z-shaped deformed steel plate is formed by sequentially and vertically connecting the end parts of three corrugated steel plates; the wave form of the corrugated steel plate is isosceles trapezoid;
the connecting ends of the two corrugated steel plates are provided with steel nodes, and the steel nodes are prefabricated section steel formed by extending the wavelengths of the connecting ends of the two corrugated steel plates to be intersected; the connecting ends of the two corrugated steel plates are provided with steel nodes, and the steel nodes are prefabricated section steel formed by extending the wavelengths of the connecting ends of the two corrugated steel plates to be intersected;
the side surface of the vertical folded special-shaped steel plate is welded with a steel batten strip to form a steel framework, and concrete is poured on the steel framework to form the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall;
the inner side of the corrugated steel plate is welded with a vertical steel plate, the steel plate and the corrugated steel plate are equal in thickness, the width value interval is 1/2 corrugated steel plate width to 5/6 corrugated steel plate width, the outer side surface of the steel plate and the side plane of the corrugated steel plate on the opposite side are positioned on the same horizontal plane at the welding position of the steel plate, and the batten strip and the steel plate are flatly and tightly welded at the inner edge of the steel node;
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 vertical folded profiled steel plate member;
the upper end and the lower end of the vertical folded special-shaped 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 value interval of the vertical folded deformed steel plate is 4-6 mm, the thickness of the concrete protective layer at the welding side of the steel batten strip is 30 mm, and the thickness value interval of the other side protective layers is 40-50 mm;
the thickness of the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall member is 200 mm to 300 mm, and the assembled built-in corrugated steel plate reinforced concrete vertical folded column and the assembled built-in corrugated steel plate reinforced concrete vertical folded wall member 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 bending angle of a corrugated steel plate arranged in the column is 30 degrees at most, the wavelength of the corrugated steel plate at the non-connecting end of the corrugated steel plate is 40 mm to 60 mm, the concrete poured in the corrugated steel plate is graded into two grades, the maximum particle size of coarse aggregate is not more than 25 mm, 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 50 mm to 80 mm, 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 6 mm 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 6 mm 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.
Preferably, the connecting bolts are high-strength bolts.
The construction process of the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall comprises the following steps:
the method comprises the following steps: prefabricating vertical folded profiled steel plates in a factory and pouring concrete to form assembled built-in corrugated steel plate reinforced concrete vertical folded columns and walls, and reserving steel plates with the length of 100 mm at the lower end parts of the assembled built-in corrugated steel plate reinforced concrete vertical folded columns and the walls for on-site splicing;
step two: when in on-site assembly, an upper assembled type built-in corrugated steel plate reinforced concrete vertical folded column and a lower assembled type built-in corrugated steel plate reinforced concrete vertical folded column are fixed through bolt holes of horizontal butt joint steel plates at the upper end and the lower end by connecting bolts, and then are connected into a whole in a welding mode;
step three: and finally, the concrete cast-in-place connection node which is higher than the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall by one strength level is used.
The invention has the beneficial effects that:
1. the corrugated steel plate is arranged in the concrete-reinforced composite floor slab, so that the area-constrained concrete can be formed, and the steel batten strip can effectively increase the mechanical engaging force between the corrugated steel plate and the concrete, further constrain the deformation of the concrete and improve the bearing capacity of a component; the corrugated steel plate bears the wave shape along the length direction of the pipe, the bending resistance inertia moment of the steel plate is increased, and the steel plate has higher bearing capacity and stability, so that the shock damage of buckling and out-of-plane instability of the shear wall is reduced.
2. The horizontal butt-joint steel plate and the corrugated steel plate are convenient to butt joint and easy to connect, and the construction efficiency and the construction precision are greatly improved.
3. The invention is used as an assembly type component, is convenient to install, reserves post-cast strips and welding space, and gives better consideration to the integrity of the column and the wall.
Drawings
FIG. 1 is a schematic view of a section steel framework of an assembled L-shaped wall with built-in corrugated steel plates for reinforcing concrete;
FIG. 2 is a schematic view of a section steel framework of an assembled L-shaped column with a built-in corrugated steel plate reinforced concrete;
FIG. 3 is a schematic view of an assembled L-shaped wall with corrugated steel plate-reinforced concrete built in;
FIG. 4 is a schematic view of an assembled built-in corrugated steel reinforced concrete L-shaped column;
FIG. 5 is a plan view of an assembled L-shaped wall with corrugated steel plate reinforced concrete inside;
FIG. 6 is a plan view of an assembled L-shaped column of internally corrugated steel reinforced concrete;
FIG. 7 is a schematic view of the assembled L-shaped column and wall member connection with the corrugated steel plate reinforced concrete built-in;
FIG. 8 is a schematic view of a section steel framework of an assembled Z-shaped wall with built-in corrugated steel reinforced concrete;
FIG. 9 is a schematic view of a section steel framework of an assembled Z-shaped column with built-in corrugated steel reinforced concrete;
FIG. 10 is a schematic view of an assembled Z-wall of internally corrugated steel reinforced concrete;
FIG. 11 is a schematic view of an assembled Z-pillar of internally corrugated steel reinforced concrete;
FIG. 12 is a plan view of an assembled Z-shaped wall with built-in corrugated steel reinforced concrete;
FIG. 13 is a plan view of an assembled Z-shaped column of internally corrugated steel reinforced concrete;
FIG. 14 is a schematic view of the assembled Z-shaped column and wall member connection of the reinforced concrete with the built-in corrugated steel plate;
description of reference numerals: 1-L-shaped special-shaped steel plate, 2-corrugated steel plate, 3-steel batten strip, 4-horizontal butt joint steel plate, 5-triangular stiffening rib, 6-steel node, 7-bending angle, 8-wavelength, 9-connecting bolt, 10-concrete and 11-steel plate.
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 fabricated vertical folded column and wall reinforced with corrugated steel plates, which includes: concrete 10, a vertical folded special-shaped steel plate 1 and a batten strip 3, wherein the vertical folded special-shaped steel plate 1 is an L-shaped special-shaped steel plate, the L-shaped deformed steel plate is formed by vertically intersecting and connecting the end parts of two corrugated steel plates, the connecting end of the corrugated steel plate 2 is provided with a steel node 6, the corrugated steel plate 2 at the other end, namely the end part of the wall limb, is changed into a vertical steel plate vertical to the length direction of the wall limb, the steel node 6 is formed by extending the wavelength 8 of the connecting end of the corrugated steel plate 2 to intersect, the intersecting part is connected into the steel section prefabricated in a factory without welding, and the steel plate 11 is welded on the inner side of the corrugated steel plate 2, the steel plate 11 and the corrugated steel plate 2 are equal in thickness, the thickness value interval is 4-6 mm, the width value interval is 1/2, the width of the corrugated steel plate 2 is 5/6, and the outer side surface of the steel plate 11 and the side plane of the corrugated steel plate 2 on the opposite side are required to be in the same horizontal plane at the welding position so as to ensure that the batten strip 3 and the steel plate 11 are smoothly and tightly welded. Steel node 6 connects two corrugated steel plate 2 and forms L shape deformed steel plate, and 3 cross sectional shape of steel lacing bar are circular, and the diameter can be taken 6 millimeters to 12 millimeters, and lacing bar interval is 100 millimeters to 200 millimeters, should lead to long welding along corrugated steel plate 2 during the welding, and the lacing bar of two directions of quadrature should stagger each other, and the distance of staggering is about the half of lacing bar interval to be connected with corrugated steel plate 2 vertically steel lacing bar 3 with the welded mode steel node 6's inner edge department forms the steel skeleton concrete 10 forms pouring on the steel skeleton the vertical book shape post of corrugated steel plate reinforcing concrete, wall are built into to the assembled.
In this embodiment, the length of the wall body is 1800 mm, the wall thickness is 300 mm, the ratio of the length h of the wall body to the wall thickness b is between 4 and 6, the waveform of the corrugated steel plate 2 arranged in the wall body is isosceles trapezoid, the maximum bending angle 7 of the corrugated steel plate 2 is 45 degrees, and the wavelength 8 of the corrugated steel plate 2 is 50 mm to 80 mm. The concrete poured inside the corrugated steel plate 2 is graded into a second grade, and the maximum grain size of the coarse aggregate is not more than 30 mm.
The horizontal butt joint steel plate 4 is welded at the upper end part and the lower end part of the L-shaped profiled steel plate, the thickness is 6 mm to 8 mm, the upper end part and the lower end part of the horizontal butt joint steel plate 4, which are arranged at the upper end part and the lower end part of the corrugated steel plate arranged in the vertical folded wall component, are at most arranged at two corrugations at intervals, and the arrangement of the two sides of the corrugated steel plate is ensured simultaneously so as to ensure the integral performance of component. The clean cross section of the horizontal butt joint steel plate 4 is provided with a bolt hole, the outer side surface of the horizontal butt joint steel plate 4 is flush with the end part of the corrugated steel plate, and a triangular stiffening rib 5 is additionally arranged between the transverse steel plate and the corrugated steel plate. The shape of the triangular stiffening rib 5 is an isosceles right triangle, and two right-angle sides are respectively welded with the corrugated steel plate 2 and the horizontal butt-joint steel plate 4.
The length, thickness and diameter of the right angle of the triangular stiffening rib 5 and the diameter of the high-strength bolt are determined according to the stress and meet the requirements of corresponding specifications; the distance between the bolt holes is determined according to the specification, and the hole diameter is determined according to the engineering condition and the specification.
When concrete is poured in a factory, the thickness of the concrete protective layer at the welding side of the batten strip is ensured to be 30 mm, and the thickness value intervals of the other side protective layers are 40-50 mm.
The vertically folded concrete columns and walls which are adjacent up and down and are internally provided with the corrugated steel plates are connected through connecting bolts 9.
The construction process of the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall comprises the following steps:
the method comprises the following steps: prefabricating an L-shaped deformed steel plate in a factory, pouring concrete to form an assembled L-shaped wall with built-in corrugated steel plate reinforced concrete, and reserving a steel plate with the length of 100 mm at the lower end part of the assembled L-shaped wall with built-in corrugated steel plate reinforced concrete for on-site splicing;
step two: when in on-site assembly, an upper and a lower identical assembled built-in corrugated steel plate reinforced concrete L-shaped wall components are fixed by connecting bolts through bolt holes of horizontally butted steel plates at the upper and lower ends and then connected into a whole in a welding mode;
step three: and finally, the concrete cast-in-place connecting node with the strength grade higher than that of the assembled built-in corrugated steel plate reinforced concrete L-shaped wall member is used.
Example 2
As shown in fig. 2, 4, 6, and 7, the present embodiment discloses a fabricated vertical folded column with built-in corrugated steel plate reinforced concrete, which is different from embodiment 1 in that the length of the column shaft in this embodiment is 900 mm, the column thickness is 300 mm, the ratio of the length h of the column shaft to the column thickness b is less than or equal to 4, the waveform of the corrugated steel plate 2 disposed therein is an isosceles trapezoid, the maximum bending angle 7 of the corrugated steel plate 2 is 30 degrees, and the wavelength 8 of the corrugated steel plate is 40 mm to 60 mm. The concrete poured inside the corrugated steel plate is graded into two grades, and the maximum grain size of the coarse aggregate is not more than 25 mm.
Example 3
As shown in fig. 8, 10, 12 and 14, the present embodiment discloses a fabricated built-in corrugated steel plate reinforced concrete vertical folded column and wall, comprising: concrete 10, a vertical folded special-shaped steel plate 1 and steel batten strips 3, wherein the vertical folded special-shaped steel plate 1 is a Z-shaped special-shaped steel plate, the Z-shaped deformed steel plate is formed by sequentially and vertically connecting the end parts of three corrugated steel plates, a steel node 6 is arranged at the connecting end of the corrugated steel plate 2, the corrugated steel plate 2 is changed into a vertical steel plate vertical to the length direction of the wall limb at the other end, namely the end part of the wall limb, the steel node 6 is formed by extending the wavelength 8 of the connecting end of the corrugated steel plate 2 to be intersected, the intersected part is connected with the prefabricated section steel of a factory instead of welding, and the steel plate 11 is welded on the inner side of the corrugated steel plate 2, the steel plate 11 and the corrugated steel plate 2 are equal in thickness, the thickness value interval is 4-6 mm, the width value interval is 1/2, the width of the corrugated steel plate 2 is 5/6, and the outer side surface of the steel plate 11 and the side plane of the corrugated steel plate 2 on the opposite side are required to be in the same horizontal plane at the welding position so as to ensure that the batten strip 3 and the steel plate 11 are smoothly and tightly welded. The steel node 6 connects two corrugated steel plate 2 and forms Z shape deformed steel plate, and 3 cross sectional shape of steel lacing bar are circular, and the diameter can be taken 6 millimeters to 12 millimeters, and lacing bar interval is 100 millimeters to 200 millimeters, should lead to long welding along corrugated steel plate 2 during the welding, and the lacing bar of two directions of quadrature should stagger each other, and the distance of staggering is about the half of lacing bar interval to be connected with corrugated steel plate 2 vertically steel lacing bar 3 with the welded mode steel node 6's inner edge department forms the steel skeleton concrete 10 forms pouring on the steel skeleton the vertical book shape post of built-in corrugated steel plate reinforcing concrete of assembled, wall.
In this embodiment, the length of the wall body is 1800 mm, the wall thickness is 300 mm, the ratio of the length h of the wall body to the wall thickness b is between 4 and 6, the waveform of the corrugated steel plate 2 arranged in the wall body is isosceles trapezoid, the maximum bending angle 7 of the corrugated steel plate 2 is 45 degrees, and the wavelength 8 of the corrugated steel plate 2 is 50 mm to 80 mm. The concrete poured inside the corrugated steel plate 2 is graded into a second grade, and the maximum grain size of the coarse aggregate is not more than 30 mm.
The horizontal butt joint steel plate 4 is welded at the upper end part and the lower end part of the Z-shaped profiled steel plate, the thickness is 6 mm to 8 mm, the upper end part and the lower end part of the horizontal butt joint steel plate 4, which are arranged at the upper end part and the lower end part of the corrugated steel plate arranged in the vertical folded wall component, are at most arranged at two corrugations at intervals, and the arrangement of the two sides of the corrugated steel plate is ensured simultaneously so as to ensure the integral performance of component. The clean cross section of the horizontal butt joint steel plate 4 is provided with a bolt hole, the outer side surface of the horizontal butt joint steel plate 4 is flush with the end part of the corrugated steel plate, and a triangular stiffening rib 5 is additionally arranged between the transverse steel plate and the corrugated steel plate. The shape of the triangular stiffening rib 5 is an isosceles right triangle, and two right-angle sides are respectively welded with the corrugated steel plate 2 and the horizontal butt-joint steel plate 4.
The length, thickness and diameter of the right angle of the triangular stiffening rib 5 and the diameter of the high-strength bolt are determined according to the stress and meet the requirements of corresponding specifications; the distance between the bolt holes is determined according to the specification, and the hole diameter is determined according to the engineering condition and the specification.
When concrete is poured in a factory, the thickness of the concrete protective layer at the welding side of the batten strip is ensured to be 30 mm, and the thickness value intervals of the other side protective layers are 40-50 mm.
The vertically folded concrete columns and walls which are adjacent up and down and are internally provided with the corrugated steel plates are connected through connecting bolts 9.
The construction process of the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall comprises the following steps:
the method comprises the following steps: prefabricating a Z-shaped profiled steel plate in a factory and pouring concrete to form an assembled built-in corrugated steel plate reinforced concrete Z-shaped wall, and reserving a steel plate with the length of 100 mm at the lower end part of the assembled built-in corrugated steel plate reinforced concrete Z-shaped wall for on-site splicing;
step two: when in on-site assembly, an upper built-in corrugated steel plate reinforced concrete Z-shaped wall component and a lower built-in corrugated steel plate reinforced concrete Z-shaped wall component which are the same in assembly type are fixed by connecting bolts through bolt holes of horizontally butted steel plates at the upper end and the lower end, and are connected into a whole in a welding mode;
step three: and finally, the concrete cast-in-place connection node with the strength grade higher than that of the assembled built-in corrugated steel plate reinforced concrete Z-shaped wall member is used.
Example 4
As shown in fig. 9, 11, 13 and 14, the present embodiment discloses a fabricated vertical folded column with built-in corrugated steel plate reinforced concrete, which is different from embodiment 1 in that the length of the column shaft in the present embodiment is 900 mm, the column thickness is 300 mm, the ratio of the length h of the column shaft to the column thickness b is less than or equal to 4, the waveform of the corrugated steel plate 2 disposed therein is isosceles trapezoid, the maximum bending angle 7 of the corrugated steel plate 2 is 30 degrees, and the wavelength 8 of the corrugated steel plate is 40 mm to 60 mm. The concrete poured inside the corrugated steel plate is graded into two grades, and the maximum grain size of the coarse aggregate is not more than 25 mm.
In the above 4 embodiments, for the fabricated vertical folded column and wall reinforced with the built-in corrugated steel plate, the column member has a greater requirement for bearing capacity than the wall member, so that the bending angle of the corrugated steel plate is required to be smaller, the wavelength is required to be 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 (9)
1. The utility model provides a built-in corrugated steel board of assembled reinforced concrete is folded shape post, wall perpendicularly which characterized in that: the steel plate comprises a vertical folded special-shaped steel plate, a corrugated steel plate, concrete, batten strips and a horizontal butt-joint steel plate;
the vertical folded special-shaped steel plate is an assembled component and comprises an L-shaped special-shaped steel plate and a Z-shaped special-shaped steel plate; the L-shaped deformed steel plate is formed by vertically connecting the end parts of two corrugated steel plates, and the Z-shaped deformed steel plate is formed by sequentially and vertically connecting the end parts of three corrugated steel plates; the wave form of the corrugated steel plate is isosceles trapezoid;
the connecting ends of the two corrugated steel plates are provided with steel nodes, and the steel nodes are prefabricated section steel formed by extending the wavelengths of the connecting ends of the two corrugated steel plates to be intersected;
the side surface of the vertical folded special-shaped steel plate is welded with a steel batten strip to form a steel framework, and concrete is poured on the steel framework to form the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall;
the inner side of the corrugated steel plate is welded with a vertical steel plate, the steel plate and the corrugated steel plate are equal in thickness, the width value interval is 1/2 corrugated steel plate width to 5/6 corrugated steel plate width, the outer side surface of the steel plate and the side plane of the corrugated steel plate on the opposite side are positioned on the same horizontal plane at the welding position of the steel plate, and the batten strip and the steel plate are flatly and tightly welded at the inner edge of the steel node;
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 vertical folded special-shaped 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 value interval of the vertical folded deformed steel plate is 4-6 mm, the thickness of the concrete protective layer at the welding side of the steel batten strip is 30 mm, and the thickness value interval of the other side protective layers is 40-50 mm;
the thickness of the assembled built-in corrugated steel plate reinforced concrete vertical folded column and the wall is 200 mm to 300 mm, and the assembled built-in corrugated steel plate reinforced concrete vertical folded column and the assembled built-in corrugated steel plate reinforced concrete vertical folded wall which are adjacent up and down are connected through connecting bolts.
2. The fabricated vertical folded concrete column and wall reinforced by built-in corrugated steel plates according to 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 40 mm to 60 mm, the concrete cast in the corrugated steel plate is graded into two grades, the maximum particle size of coarse aggregate is not more than 25 mm, 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.
3. The fabricated vertical folded concrete column and wall reinforced by built-in corrugated steel plates according to 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 50 mm to 80 mm, 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 vertical folded concrete column and wall reinforced by built-in corrugated steel plates according to claim 1, wherein: the section of each steel lacing bar is circular, the diameter of each steel lacing bar is 6 mm to 12 mm, and the distance between lacing bars is 100 mm to 200 mm.
5. The fabricated vertical folded concrete column and wall reinforced by built-in corrugated steel plates according to 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 vertical folded concrete column and wall reinforced by built-in corrugated steel plates according to claim 1, wherein: the thickness of the horizontal butt joint steel plate is 6 mm to 8 mm.
7. The fabricated vertical folded concrete column and wall reinforced by built-in corrugated steel plates according to 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 vertical folded concrete column and wall reinforced by built-in corrugated steel plates according to claim 1, wherein: the connecting bolts are high-strength bolts.
9. The construction process of the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall according to claim 1, 2, 3, 4, 5, 6, 7 or 8, comprising the following steps:
the method comprises the following steps: prefabricating vertical folded profiled steel plates in a factory and pouring concrete to form assembled built-in corrugated steel plate reinforced concrete vertical folded columns and walls, and reserving steel plates with the length of 100 mm at the lower end parts of the assembled built-in corrugated steel plate reinforced concrete vertical folded columns and the walls for on-site splicing;
step two: when in on-site assembly, an upper assembled type built-in corrugated steel plate reinforced concrete vertical folded column and a lower assembled type built-in corrugated steel plate reinforced concrete vertical folded column are fixed through bolt holes of horizontal butt joint steel plates at the upper end and the lower end by connecting bolts, and then are connected into a whole in a welding mode;
step three: and finally, the concrete cast-in-place connection node which is higher than the assembled built-in corrugated steel plate reinforced concrete vertical folded column and wall by one strength level is used.
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Inventor after: Xu Jinjun Inventor after: Sheng Yuwen Inventor after: Ji Chenheng Inventor after: Luo Junbin Inventor after: Huang Xinliang Inventor after: Chen Zongping Inventor after: Zhao Xinyu Inventor after: Wu Yuntian Inventor after: Yu Yong Inventor before: Xu Jinjun Inventor before: Luo Junbin Inventor before: Huang Xinliang Inventor before: Chen Zongping Inventor before: Zhao Xinyu Inventor before: Wu Yuntian Inventor before: Yu Yong |