A portal-type mild steel energy dissipator with negative Poisson's ratio shear steel plate

Abstract

The present invention discloses a gantry-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate. The gantry-type mild steel energy dissipator is characterized in that it comprises a frame and a shear steel plate energy dissipator. The frame is rectangular. The upper horizontal steel plate of the shear steel plate energy dissipator is fixedly connected to the inner side of one side of the frame. The lower horizontal steel plate is fixedly connected to the two corners of the opposite side of the frame with an oblique support. The middle steel plate is provided with linearly arranged negative Poisson's ratio holes. The negative Poisson's ratio holes are cross-arrow-shaped holes, or inward-concave hexagonal holes, or semi-inward-concave hexagonal holes. Under the action of an earthquake, the entire frame can move laterally. As the negative Poisson's ratio shear steel plate energy dissipator moves laterally, the mild steel plate is subjected to shear force and changes from a rectangle to a parallelogram. It becomes longer along the diagonal direction. The negative Poisson's ratio shear steel plate energy dissipator consumes energy through the deformation of the negative Poisson's ratio arrow-shaped holes arranged along the diagonal direction. When the holes are compressed and deformed to the limit, the energy is further dissipated by the deformation of the steel plate, thereby generating a two-stage energy dissipation process.

Description

Technical Field

[0001] The invention relates to the field of civil engineering structure shock absorption, and in particular to a portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate. Background Art

[0002] Structural energy dissipation and vibration reduction technology is a new type of earthquake-resistant or wind-resistant structural control technology. It not only changes the traditional concepts, methods, and approaches to structural seismic design, but also significantly improves the structure's earthquake resistance, comfort under wind loads, seismic reliability, and disaster prevention capabilities. In recent years, structural energy dissipation and vibration reduction technology has been gradually promoted and applied in new construction and the reinforcement and renovation of existing buildings in China.

[0003] The energy contained in moderate or severe earthquakes is enormous. Conventional shear plate energy absorbers exhibit poor hysteresis performance when deformed under earthquake action, and their energy dissipation capacity needs to be improved. Currently, most shear plate energy absorbers do not significantly alter the construction of individual components, instead focusing on the inter-component relationship. This results in a relatively simple energy dissipation method for each shear plate energy absorber. Summary of the Invention

[0004] The purpose of the present invention is to address the problem that the energy dissipation mode of a single shear steel plate energy dissipator is relatively single, and to provide a portal-type soft steel energy dissipator with a negative Poisson's ratio shear steel plate. By arranging holes with negative Poisson's ratio performance on the middle horizontal plate of the shear steel plate energy dissipator, the hysteresis performance of the shear steel plate energy dissipator can be improved, the energy dissipation capacity of the energy dissipator can be improved, and the energy dissipation mode of the energy dissipator can be changed.

[0005] The technical solutions of the present invention are as follows:

[0006] A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate comprises a frame and a shear steel plate energy dissipator, wherein the frame is portal-type, the upper horizontal steel plate of the shear steel plate energy dissipator is fixedly connected to the inner side of one side of the frame, the lower horizontal steel plate of the shear steel plate energy dissipator is fixedly connected to the two opposite corners of the frame with an oblique support, and linearly arranged negative Poisson's ratio holes are arranged on the middle steel plate of the shear steel plate energy dissipator, and the negative Poisson's ratio holes are at least two rows of orthogonal and antigonal arrow-shaped holes arranged obliquely along the diagonal line of the middle steel plate, or at least two rows of staggered concave hexagonal holes, or at least two rows of orthogonal and antigonal semi-concave hexagonal holes.

[0007] Furthermore, the shear steel plate energy dissipator also includes a left vertical steel plate and a right vertical steel plate, which are respectively located on the left and right sides of the middle steel plate; the left vertical steel plate, the middle steel plate and the right vertical steel plate are all located between the upper horizontal steel plate and the lower horizontal steel plate.

[0008] Furthermore, the upper transverse steel plate is embedded in the inner side of one side of the frame, and oblique supports are welded between the lower transverse steel plate and the two opposite corners of the frame.

[0009] Furthermore, the negative Poisson's ratio arrow-shaped holes on the middle steel plate are arranged from the center point to the four corners.

[0010] Furthermore, the oblique support includes a left oblique support and a right oblique support, and the left oblique support and the right oblique support are welded to the lower left corner or the lower right corner of the frame respectively.

[0011] Furthermore, the oblique support is a steel pipe with a square cross-section, one end of which is beveled and the other end is corner-shaped.

[0012] Furthermore, a connecting plate is provided between the oblique support and the frame, and the connecting plate includes a left connecting plate and a right connecting plate.

[0013] Furthermore, the connecting plate is embedded in the two inner corners of the lower side of the frame, and the connecting plate is an angle steel.

[0014] Furthermore, the upper horizontal steel plate, the lower horizontal steel plate, the left vertical steel plate and the right vertical steel plate are ordinary steel plates, and the middle steel plate is a low yield point steel plate.

[0015] Furthermore, the frame is a concrete beam-column frame.

[0016] Compared with the existing technology, the beneficial effects of the present invention are:

[0017] 1. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate. This design allows the entire frame to undergo lateral movement under earthquakes. As the negative Poisson's ratio shear steel plate energy dissipator moves laterally, the mild steel plate undergoes shear force, transforming from a rectangle into a parallelogram, and its shape becomes longer diagonally. The negative Poisson's ratio shear steel plate energy dissipator dissipates energy through the deformation of diagonally arranged negative Poisson's ratio arrow-shaped holes, improving the hysteretic performance of the shear steel plate energy dissipator. When the holes are compressed and deformed to their limit, the seismic energy is further dissipated by the deformation of the steel plate, resulting in a two-stage energy dissipation process.

[0018] 2. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate. The vertical steel plate in the middle of the shear steel plate energy dissipator is provided with circularly arranged negative Poisson's ratio arrow-shaped holes. The holes are arranged linearly along the diagonal of the steel plate, thereby improving the energy dissipation capacity of the energy dissipator.

[0019] 3. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate adopts the negative Poisson's ratio shear steel plate energy dissipator method, introduces the negative Poisson's ratio concept, realizes the secondary energy dissipation process of the energy dissipator, and improves the lateral resistance of the building. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The schematic diagram shows the structure of a portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate.

[0021] Figure 2 This is a schematic diagram of the isometric structure of a shear steel plate energy dissipator of a gantry-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate.

[0022] Figure 3 This is a schematic diagram of the front structure of a shear steel plate energy dissipator of a gantry-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate.

[0023] Figure 4 A schematic diagram of another shear steel plate energy dissipator structure is shown, which is a gantry-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate.

[0024] Figure 5 Schematic diagram of the oblique support structure of a portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate.

[0025] Figure 6 This is a schematic diagram of the structure of a gantry-type mild steel energy dissipator with a concave hexagonal hole shear steel plate and a negative Poisson's ratio shear steel plate.

[0026] Figure 7 This is a schematic diagram of the structure of a semi-concave hexagonal hole shear steel plate energy dissipator of a gantry-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate.

[0027] Figure numbers: 1-upper horizontal steel plate, 2-left vertical steel plate, 3-middle steel plate, 4-right vertical steel plate, 5-lower horizontal steel plate, 6-right oblique support, 7-right connecting member, 8-left connecting member, 9-left oblique support, 10-frame. DETAILED DESCRIPTION

[0028] It should be noted that relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus. In the absence of further limitations, an element defined by the phrase "comprising a ..." does not exclude the presence of additional identical elements in the process, method, article, or apparatus comprising the element.

[0029] The features and performance of the present invention are further described in detail below with reference to the embodiments.

[0030] See also Figure 1-5, a portal-type mild steel energy dissipator with negative Poisson's ratio shear steel plate, e.g. Figure 1 As shown, it includes a frame 10 and a shear steel plate energy dissipator. The frame 10 is rectangular. The upper horizontal steel plate 1 of the shear steel plate energy dissipator is fixedly connected to the inner side of one side of the frame 10. The lower horizontal steel plate 5 of the shear steel plate energy dissipator is fixedly connected to the two opposite corners of the frame 10 with diagonal supports. The frame 10 is a concrete beam-column frame.

[0031] like Figure 2 As shown, the shear steel plate energy dissipator also includes a left vertical steel plate 2 and a right vertical steel plate 4, which are respectively located on the left and right sides of the middle steel plate 3; the left vertical steel plate 2, the middle steel plate 3 and the right vertical steel plate 4 are all located between the upper horizontal steel plate 1 and the lower horizontal steel plate 5. Figure 3 As shown, the middle steel plate 3 of the shear steel plate energy dissipator is provided with linearly arranged negative Poisson's ratio arrow-shaped holes. The negative Poisson's ratio holes are positive and negative arrow-shaped holes arranged obliquely along the diagonal of the middle steel plate 3. The negative Poisson's ratio arrow-shaped holes on the middle steel plate 3 are arranged in three rows on each side from the center point to the four corners.

[0032] The upper horizontal steel plate 1, the lower horizontal steel plate 5, the left vertical steel plate 2 and the right vertical steel plate 4 are ordinary steel plates, and the middle steel plate 3 is a low yield point steel plate. The upper horizontal steel plate 1 is embedded in the inner side of one side of the frame 10, and the lower horizontal steel plate 5 is welded with diagonal supports between the two opposite corners of the frame 10.

[0033] The oblique supports include a left oblique support 9 and a right oblique support 6, which are welded to the left lower corner or the right lower corner of the frame 10 respectively. Figure 5 The diagonal support is a steel pipe with a square cross-section, one end of which is beveled and the other end is corner-shaped.

[0034] A connecting plate is also provided between the oblique support and the frame 10, and the connecting plate comprises a left connecting plate 8 and a right connecting plate 7. The connecting plate is embedded in the inner two corners of the lower side of the frame 10, and the connecting plate is an angle steel.

[0035] In another embodiment, a portal-type mild steel energy dissipator having a negative Poisson's ratio shear steel plate, such as Figure 1 As shown, it includes a frame 10 and a shear steel plate energy dissipator. The frame 10 is rectangular. The upper horizontal steel plate 1 of the shear steel plate energy dissipator is fixedly connected to the inner side of one side of the frame 10. The lower horizontal steel plate 5 of the shear steel plate energy dissipator is fixedly connected to the two opposite corners of the frame 10 with diagonal supports. The frame 10 is a concrete beam-column frame.

[0036] like Figure 2 As shown, the shear steel plate energy dissipator also includes a left vertical steel plate 2 and a right vertical steel plate 4, which are respectively located on the left and right sides of the middle steel plate 3; the left vertical steel plate 2, the middle steel plate 3 and the right vertical steel plate 4 are all located between the upper horizontal steel plate 1 and the lower horizontal steel plate 5. Figure 4As shown, the middle steel plate 3 of the shear steel plate energy dissipator is provided with linearly arranged negative Poisson's ratio arrow-shaped holes. The negative Poisson's ratio holes are positive and negative arrow-shaped holes arranged obliquely along the diagonal of the middle steel plate 3. The negative Poisson's ratio arrow-shaped holes on the middle steel plate 3 are arranged in five columns on each side from the center point to the four corners.

[0037] The upper horizontal steel plate 1, the lower horizontal steel plate 5, the left vertical steel plate 2 and the right vertical steel plate 4 are ordinary steel plates, and the middle steel plate 3 is a low yield point steel plate. The upper horizontal steel plate 1 is embedded in the inner side of one side of the frame 10, and the lower horizontal steel plate 5 is welded with diagonal supports between the two opposite corners of the frame 10.

[0038] The oblique supports include a left oblique support 9 and a right oblique support 6, which are welded to the left lower corner or the right lower corner of the frame 10 respectively. Figure 5 The diagonal support is a steel pipe with a square cross-section, one end of which is beveled and the other end is corner-shaped.

[0039] A connecting plate is also provided between the oblique support and the frame 10, and the connecting plate comprises a left connecting plate 8 and a right connecting plate 7. The connecting plate is embedded in the inner two corners of the lower side of the frame 10, and the connecting plate is an angle steel.

[0040] In another embodiment, a portal-type mild steel energy dissipator having a negative Poisson's ratio shear steel plate, such as Figure 1 As shown, it includes a frame 10 and a shear steel plate energy dissipator. The frame 10 is rectangular. The upper horizontal steel plate 1 of the shear steel plate energy dissipator is fixedly connected to the inner side of one side of the frame 10. The lower horizontal steel plate 5 of the shear steel plate energy dissipator is fixedly connected to the two opposite corners of the frame 10 with diagonal supports. The frame 10 is a concrete beam-column frame.

[0041] like Figure 2 As shown, the shear steel plate energy dissipator also includes a left vertical steel plate 2 and a right vertical steel plate 4, which are respectively located on the left and right sides of the middle steel plate 3; the left vertical steel plate 2, the middle steel plate 3 and the right vertical steel plate 4 are all located between the upper horizontal steel plate 1 and the lower horizontal steel plate 5. Figure 6 As shown, the middle steel plate 3 of the shear steel plate energy dissipator is provided with linearly arranged negative Poisson's ratio holes. The negative Poisson's ratio holes are concave hexagonal holes staggered along the diagonal of the middle steel plate 3. The negative Poisson's ratio concave hexagonal holes on the middle steel plate 3 are arranged from the center point to the four corners with five columns on each side.

[0042] The upper horizontal steel plate 1, the lower horizontal steel plate 5, the left vertical steel plate 2 and the right vertical steel plate 4 are ordinary steel plates, and the middle steel plate 3 is a low yield point steel plate. The upper horizontal steel plate 1 is embedded in the inner side of one side of the frame 10, and the lower horizontal steel plate 5 is welded with diagonal supports between the two opposite corners of the frame 10.

[0043] The oblique supports include a left oblique support 9 and a right oblique support 6, which are welded to the left lower corner or the right lower corner of the frame 10 respectively. Figure 5 The diagonal support is a steel pipe with a square cross-section, one end of which is beveled and the other end is corner-shaped.

[0044] A connecting plate is also provided between the oblique support and the frame 10, and the connecting plate comprises a left connecting plate 8 and a right connecting plate 7. The connecting plate is embedded in the inner two corners of the lower side of the frame 10, and the connecting plate is an angle steel.

[0045] In another embodiment, a portal-type mild steel energy dissipator having a negative Poisson's ratio shear steel plate, such as Figure 1 As shown, it includes a frame 10 and a shear steel plate energy dissipator. The frame 10 is rectangular. The upper horizontal steel plate 1 of the shear steel plate energy dissipator is fixedly connected to the inner side of one side of the frame 10. The lower horizontal steel plate 5 of the shear steel plate energy dissipator is fixedly connected to the two opposite corners of the frame 10 with diagonal supports. The frame 10 is a concrete beam-column frame.

[0046] like Figure 2 As shown, the shear steel plate energy dissipator also includes a left vertical steel plate 2 and a right vertical steel plate 4, which are respectively located on the left and right sides of the middle steel plate 3; the left vertical steel plate 2, the middle steel plate 3 and the right vertical steel plate 4 are all located between the upper horizontal steel plate 1 and the lower horizontal steel plate 5. Figure 7 As shown, the middle steel plate 3 of the shear steel plate energy dissipator is provided with linearly arranged negative Poisson's ratio holes. The negative Poisson's ratio holes are semi-concave hexagonal holes staggered along the diagonal of the middle steel plate 3. The negative Poisson's ratio semi-concave hexagonal holes on the middle steel plate 3 are arranged from the center point to the four corners with five columns on each side.

[0047] The upper horizontal steel plate 1, the lower horizontal steel plate 5, the left vertical steel plate 2 and the right vertical steel plate 4 are ordinary steel plates, and the middle steel plate 3 is a low yield point steel plate. The upper horizontal steel plate 1 is embedded in the inner side of one side of the frame 10, and the lower horizontal steel plate 5 is welded with diagonal supports between the two opposite corners of the frame 10.

[0048] The oblique supports include a left oblique support 9 and a right oblique support 6, which are welded to the left lower corner or the right lower corner of the frame 10 respectively. Figure 5 The diagonal support is a steel pipe with a square cross-section, one end of which is beveled and the other end is corner-shaped.

[0049] A connecting plate is also provided between the oblique support and the frame 10, and the connecting plate comprises a left connecting plate 8 and a right connecting plate 7. The connecting plate is embedded in the inner two corners of the lower side of the frame 10, and the connecting plate is an angle steel.

[0050] How it works

[0051] A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate. Due to the presence of the negative Poisson's ratio shear steel plate energy dissipator, the entire frame can move laterally under the action of an earthquake. As the negative Poisson's ratio shear steel plate energy dissipator moves laterally, the mild steel plate is subjected to shear force and changes from a rectangle to a parallelogram, and it becomes longer along the diagonal direction. The negative Poisson's ratio shear steel plate energy dissipator dissipates energy through the deformation of the negative Poisson's ratio arrow-shaped holes arranged along the diagonal. When the holes are compressed and deformed to the limit, the seismic energy is further dissipated by the deformation of the steel plate, thereby generating a two-stage energy dissipation process, thereby improving the energy dissipation capacity of the energy dissipator, improving the hysteresis performance of the shear steel plate energy dissipator, and improving the lateral stiffness of the building.

[0052] The shear steel plate energy dissipator is provided with cyclically arranged negative Poisson's ratio arrow-shaped holes on the middle vertical steel plate. The holes are arranged linearly along the diagonal of the steel plate, thereby improving the energy dissipation capacity of the energy dissipator.

[0053] By adopting the method of negative Poisson's ratio shear steel plate energy dissipator, the concept of negative Poisson's ratio is introduced to realize the secondary energy dissipation process of the energy dissipator and improve the lateral resistance of the building.

[0054] The above-described embodiments merely represent specific implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of protection of the present application. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the technical concept of the present application, and all such variations and improvements fall within the scope of protection of the present application.

Claims

1. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate, characterized in that: The invention comprises a frame (10) and a shear steel plate energy dissipator, wherein the frame (10) is rectangular, an upper transverse steel plate (1) of the shear steel plate energy dissipator is fixedly connected to the inner side of one side of the frame (10), a lower transverse steel plate (5) of the shear steel plate energy dissipator is fixedly connected to the two corners of the opposite sides of the frame (10) with an oblique support, and a middle steel plate (3) of the shear steel plate energy dissipator is provided with linearly arranged negative Poisson's ratio holes, and the negative Poisson's ratio holes are at least two rows of orthogonal and antigonal arrow-shaped holes obliquely arranged along the diagonal of the middle steel plate (3), or at least two rows of staggered indented hexagonal holes, or at least two rows of orthogonal and antigonal semi-indented hexagonal holes.

2. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate according to claim 1, characterized in that: The shear steel plate energy dissipator further comprises a left vertical steel plate (2) and a right vertical steel plate (4), wherein the left vertical steel plate (2) and the right vertical steel plate (4) are respectively located on the left and right sides of the middle steel plate (3); the left vertical steel plate (2), the middle steel plate (3) and the right vertical steel plate (4) are all located between the upper horizontal steel plate (1) and the lower horizontal steel plate (5).

3. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate according to claim 1 or 2, characterized in that: The upper transverse steel plate (1) is embedded in the inner side of one side of the frame (10), and oblique supports are welded between the lower transverse steel plate (5) and the two corners of the opposite sides of the frame (10).

4. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate according to claim 1 or 2, characterized in that: The negative Poisson's ratio arrow-shaped holes on the middle steel plate (3) are arranged from the center point to the four corners.

5. The portal-type mild steel energy dissipator with negative Poisson's ratio shear steel plate according to claim 1, characterized in that: The oblique support comprises a left oblique support (9) and a right oblique support (6), and the left oblique support (9) and the right oblique support (6) are respectively welded to the left lower corner or the right lower corner of the frame (10).

6. A portal-type mild steel energy dissipator with a negative Poisson's ratio shear steel plate according to claim 1 or 5, characterized in that: The oblique support is a steel pipe with a square cross-section, one end of which is beveled and the other end is corner-shaped.

7. The portal-type mild steel energy dissipator with negative Poisson's ratio shear steel plate according to claim 1, characterized in that: A connecting plate is also provided between the oblique support and the frame (10), and the connecting plate comprises a left connecting plate (8) and a right connecting plate (7).

8. A portal-type mild steel energy dissipator with negative Poisson's ratio shear steel plate according to claim 7, characterized in that: The connecting plate is embedded in the two inner corners of the lower side of the frame (10), and the connecting plate is angle steel.

9. The portal-type mild steel energy dissipator with negative Poisson's ratio shear steel plate according to claim 2, characterized in that: The upper horizontal steel plate (1), the lower horizontal steel plate (5), the left vertical steel plate (2) and the right vertical steel plate (4) are ordinary steel plates, and the middle steel plate (3) is a low-yield point steel plate.

10. The portal-type mild steel energy dissipator with negative Poisson's ratio shear steel plate according to claim 1, characterized in that: The frame (10) is a concrete beam-column frame.

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