A cold-formed thin-walled steel-polypropylene tie rod PEC shear wall

Abstract

The invention discloses a cold-bent thin-walled steel-polypropylene tie rod PEC shear wall, comprising an intermediate skeleton, wherein the intermediate skeleton comprises two shrinkage-type corrugated steel plates, wherein the shrinkages on the two shrinkage-type corrugated steel plates correspond to each other one by one, and each shrinkage on the first shrinkage-type corrugated steel plate is buckled with the corresponding shrinkage on the second shrinkage-type corrugated steel plate to form a plurality of channels, two cold-bent thin-walled C-shaped steels are arranged at both ends of the intermediate skeleton, wherein the web of the first cold-bent thin-walled C-shaped steel backs against the first shrinkage-type corrugated steel plate, and the web of the second cold-bent thin-walled C-shaped steel backs against the second shrinkage-type corrugated steel plate, and a connecting piece passes through the web of the first cold-bent thin-walled C-shaped steel, the first shrinkage-type corrugated steel plate, the second shrinkage-type corrugated steel plate and the second cold-bent thin-walled C-shaped steel in sequence, and the shear wall has high ductility and does not have welding residual stress.

Description

Technical Field

[0001] The invention belongs to the technical field of steel structures and relates to a cold-bent thin-walled steel-polypropylene tie rod PEC shear wall. Background Art

[0002] The existing double steel plate concrete composite shear wall is mainly composed of steel plate, concrete and shear connectors. However, in order to ensure that the steel plate and concrete work together as a whole, a large number of shear connectors need to be welded on the steel plate, which makes the production process of the composite shear wall complicated and increases the cost. At the same time, it is prone to shear failure under horizontal loads and welding residual stress exists inside the steel plate, which restricts the promotion and application of this structure in engineering practice. Summary of the invention

[0003] The purpose of the present invention is to overcome the disadvantages of the prior art and provide a cold-bent thin-walled steel-polypropylene tie rod PEC shear wall, which has high ductility and no welding residual stress.

[0004] To achieve the above-mentioned purpose, the cold-bent thin-walled steel-polypropylene tie rod PEC shear wall of the present invention includes an intermediate skeleton, wherein the intermediate skeleton includes two shrinkage-type corrugated steel plates, wherein the shrinkages on the two shrinkage-type corrugated steel plates correspond to each other, and each shrinkage on the first shrinkage-type corrugated steel plate is buckled with the corresponding shrinkage on the second shrinkage-type corrugated steel plate to form a plurality of channels, and two cold-bent thin-walled C-shaped steels are arranged at both ends of the intermediate skeleton, wherein the web of the first cold-bent thin-walled C-shaped steel backs against the first shrinkage-type corrugated steel plate, and the web of the second cold-bent thin-walled C-shaped steel backs against the second shrinkage-type corrugated steel plate, and the connecting piece passes through the web of the first cold-bent thin-walled C-shaped steel, the first shrinkage-type corrugated steel plate, the second shrinkage-type corrugated steel plate and the second cold-bent thin-walled C-shaped steel in sequence;

[0005] One end of the first polypropylene strapping tape passes through the upper flange of the first cold-bent thin-walled C-shaped steel, the lower flange of the first cold-bent thin-walled C-shaped steel, the outermost channel, the lower flange of the second cold-bent thin-walled C-shaped steel and the upper flange of the second cold-bent thin-walled C-shaped steel in sequence, and then is connected to the other end of the first polypropylene strapping tape;

[0006] Adjacent channels are connected by a second polypropylene strapping tape, and lightweight high-strength concrete is poured in each channel, between adjacent contractions in two contraction-type corrugated steel plates, and between upper flanges and lower flanges of two cold-bent thin-walled C-shaped steels.

[0007] One end of the second polypropylene strapping belt passes through two adjacent channels in sequence and is connected with the other end of the second polypropylene strapping belt.

[0008] The connecting piece is a bolt or a rivet.

[0009] The second polypropylene strapping tape is perpendicular to the axis of each channel.

[0010] The first polypropylene strapping tape is perpendicular to the axis of the cold-bent thin-walled C-shaped steel.

[0011] The first polypropylene strapping belts are distributed in sequence along the axial direction.

[0012] The distance between the adjacent first polypropylene strapping tapes on both sides is 50 mm; the distance between the adjacent first polypropylene strapping tapes in the middle is 100 mm.

[0013] The second polypropylene strapping belts are distributed in sequence along the axial direction.

[0014] The distance between the adjacent second polypropylene strapping tapes on both sides is 50 mm; the distance between the adjacent second polypropylene strapping tapes in the middle is 100 mm.

[0015] The present invention has the following beneficial effects:

[0016] During the specific operation of the cold-bent thin-walled steel-polypropylene tie rod PEC shear wall described in the present invention, two shrinking corrugated steel plates and two cold-bent thin-walled C-shaped steels are connected by a first polypropylene strapping tape, a second polypropylene strapping tape and a connecting piece, and then lightweight high-strength concrete is poured. It should be noted that in the present invention, the polypropylene strapping tape is used to play a tensioning role in the shear wall and also serves as a shear-resistant connector, and plays a tensioning role in the edge constraint member and also serves as a transverse tie rod. The concrete is embedded by using the polypropylene strapping tape and the plate ribs on the shrinking corrugated steel plate, which promotes the coordinated work of the corrugated steel plate and the concrete, so as to improve the ductility, energy dissipation capacity and shear impact resistance of the structure, and there is no welding residual stress. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention;

[0018] Figure 2 It is a front view of the present invention;

[0019] Figure 3 A top view of the present invention;

[0020] Figure 4 is a side view of the present invention;

[0021] Figure 5 It is a detailed structural diagram of the present invention.

[0022] Among them, 1 is a shrink-type corrugated steel plate, 2 is a cold-bent thin-walled C-shaped steel, 3 is a lightweight high-strength concrete, 41 is a first polypropylene strapping tape, 42 is a second polypropylene strapping tape, and 5 is a connecting piece. DETAILED DESCRIPTION

[0023] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only an embodiment of a part of the present invention, not all embodiments, and is not intended to limit the scope of the present invention. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concepts disclosed in the present invention. Based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work should fall within the scope of protection of the present invention.

[0024] The accompanying drawings show schematic diagrams of structures according to embodiments disclosed in the present invention. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may additionally design regions / layers with different shapes, sizes, and relative positions according to actual needs.

[0025] refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 The cold-bent thin-walled steel-polypropylene tie rod PEC shear wall of the present invention comprises an intermediate skeleton, wherein the intermediate skeleton comprises two shrinkage-type corrugated steel plates 1, wherein the shrinkages on the two shrinkage-type corrugated steel plates 1 correspond to each other, and the shrinkages on the first shrinkage-type corrugated steel plate 1 are buckled with the corresponding shrinkages on the second shrinkage-type corrugated steel plate 1 to form a plurality of channels, and two cold-bent thin-walled C-shaped steels 2 are arranged at both ends of the intermediate skeleton, wherein the web of the first cold-bent thin-walled C-shaped steel 2 is backed on the first shrinkage-type corrugated steel plate 1, and the web of the second cold-bent thin-walled C-shaped steel 2 is backed on the second shrinkage-type corrugated steel plate 1, and the connecting member 5 passes through the web of the first cold-bent thin-walled C-shaped steel 2, the first shrinkage-type corrugated steel plate 1, the second shrinkage-type corrugated steel plate 1 and the second cold-bent thin-walled C-shaped steel 2 in sequence;

[0026] One end of the first polypropylene strapping tape 41 passes through the upper flange of the first cold-bent thin-walled C-shaped steel 2, the lower flange of the first cold-bent thin-walled C-shaped steel 2, the outermost channel, the lower flange of the second cold-bent thin-walled C-shaped steel 2 and the upper flange of the second cold-bent thin-walled C-shaped steel 2 in sequence and is connected to the other end of the first polypropylene strapping tape 41;

[0027] Adjacent channels are connected by a second polypropylene strapping tape 42 , wherein one end of the second polypropylene strapping tape 42 passes through two adjacent channels in sequence and is connected to the other end of the second polypropylene strapping tape 42 .

[0028] Lightweight high-strength concrete 3 is poured in each channel, between adjacent contractions in two contraction-type corrugated steel plates 1, and between the upper flange and the lower flange of two cold-bent thin-walled C-shaped steels 2.

[0029] The connecting member 5 is a bolt or a rivet.

[0030] The second polypropylene strapping tape 42 is perpendicular to the axis of each channel, and the first polypropylene strapping tape 41 is perpendicular to the axis of the cold-bent thin-walled C-shaped steel 2 .

[0031] The first polypropylene strapping tapes 41 are distributed in sequence along the axial direction, and the distance between adjacent first polypropylene strapping tapes 41 on both sides is 50 mm; the spacing between adjacent first polypropylene strapping tapes 41 in the middle is 100 mm; the second polypropylene strapping tapes 42 are distributed in sequence along the axial direction, and the distance between adjacent second polypropylene strapping tapes 42 on both sides is 50 mm; the spacing between adjacent second polypropylene strapping tapes 42 in the middle is 100 mm.

[0032] During the specific construction of the present invention, in the factory, circular holes are opened on the straight edges of two shrinking corrugated steel plates 1, oblong holes are opened at the shrinking cross-sections, and circular holes are opened at the webs and oblong holes are opened at the flanges of two cold-bent thin-walled C-shaped steels 2. After being transported to the construction site, the two shrinking corrugated steel plates 1 and the two cold-bent thin-walled C-shaped steels 2 are connected by a first polypropylene strapping tape 41, a second polypropylene strapping tape 42 and a connecting piece 5, and then lightweight high-strength concrete 3 is poured to form a cold-bent thin-walled steel-polypropylene tie rod PEC shear wall.

[0033] It should be noted that the number of the connectors 5 can be adjusted according to actual needs, and the number of the first polypropylene strapping tape 41 and the second polypropylene strapping tape 42 can also be adjusted according to actual needs.

Claims

1. A cold-formed thin-walled steel-polypropylene tie rod PEC shear wall, characterized in that: The invention comprises an intermediate frame, wherein the intermediate frame comprises two shrinkage-type corrugated steel plates (1), wherein the shrinkages on the two shrinkage-type corrugated steel plates (1) correspond to each other, and the shrinkages on the first shrinkage-type corrugated steel plate (1) are interlocked with the corresponding shrinkages on the second shrinkage-type corrugated steel plate (1) to form a plurality of channels, and two cold-bent thin-walled C-shaped steels (2) are arranged at both ends of the intermediate frame, wherein the web of the first cold-bent thin-walled C-shaped steel (2) is backed against the first shrinkage-type corrugated steel plate (1), and the web of the second cold-bent thin-walled C-shaped steel (2) is backed against the second shrinkage-type corrugated steel plate (1), and the connecting piece (5) passes through the web of the first cold-bent thin-walled C-shaped steel (2), the first shrinkage-type corrugated steel plate (1), the second shrinkage-type corrugated steel plate (1) and the second cold-bent thin-walled C-shaped steel (2) in sequence; One end of the first polypropylene strapping tape (41) passes through the upper flange of the first cold-bent thin-walled C-shaped steel (2), the lower flange of the first cold-bent thin-walled C-shaped steel (2), the outermost channel, the lower flange of the second cold-bent thin-walled C-shaped steel (2) and the upper flange of the second cold-bent thin-walled C-shaped steel (2) in sequence and is then connected to the other end of the first polypropylene strapping tape (41); Adjacent channels are connected by a second polypropylene strapping tape (42), and lightweight high-strength concrete (3) is poured in each channel, between adjacent constrictions in two constricted corrugated steel plates (1), and between upper flanges and lower flanges of two cold-bent thin-walled C-shaped steels (2); One end of the second polypropylene strapping tape (42) passes through two adjacent passages in sequence and is connected to the other end of the second polypropylene strapping tape (42); The connecting piece (5) is a bolt or a rivet; The second polypropylene packing belt (42) is perpendicular to the axis of each channel; The first polypropylene strapping belt (41) is perpendicular to the axis of the cold-bent thin-walled C-shaped steel (2); The first polypropylene strapping belts (41) are distributed in sequence along the axial direction.

2. The cold-formed thin-walled steel-polypropylene tie rod PEC shear wall according to claim 1 is characterized in that: The distance between the adjacent first polypropylene strapping belts (41) on both sides is 50 mm; the distance between the adjacent first polypropylene strapping belts (41) in the middle is 100 mm.

3. The cold-formed thin-walled steel-polypropylene tie rod PEC shear wall according to claim 1, characterized in that: The second polypropylene strapping belts (42) are distributed in sequence along the axial direction.

4. The cold-formed thin-walled steel-polypropylene tie rod PEC shear wall according to claim 3 is characterized in that: The distance between the adjacent second polypropylene strapping belts (42) on both sides is 50 mm; the distance between the adjacent second polypropylene strapping belts (42) in the middle is 100 mm.

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