Multi-stage buckling-restrained brace device

A multi-stage buckling-restrained brace device, comprising a first supporting plate (100) and a second supporting plate (200) spaced apart from each other along a first direction, an energy dissipation component (300) located between the first supporting plate (100) and the second supporting plate (200), and a restraining component (400) configured to restrain the energy dissipation component (300) from buckling under compression

• wherein the restraining component (400) comprises a first sliding plate (410), a second sliding plate (420). a first connecting component (431) and a second connecting component (432);
• the energy dissipation component (300) comprises a first core plate (310) and a plurality of high-stage core plates arranged side-by-side with the first core plate (310);
• the first sliding plate (410) is fixedly connected to a first end of the first core plate (310) and the first supporting plate (100);
• the second sliding plate (420) is fixedly connected to a second end of the first core plate (310) and the second supporting plate (200);
• opposing ends of each of the high-stage core plates are respectively spaced from the first supporting plate (100) and the second supporting plate (200) to form adjustable gaps (500) between the high-stage core plates and the first supporting plate (100) and between the high-stage core plates and the second supporting plate (200);
• a first long hole (340) is formed at a first end of each high-stage core plate, and a second long hole (350) is formed at a second end of each high-stage core plate;
• the first long hole (340) and the second long hole (350) both extend along the first direction;
• the first sliding plate (410) is formed with a first connection hole (411) opposite to the first long hole (340);
• the first connecting component (431) passes through the first connection hole (411) and the first long hole (340);
• the second sliding plate (420) is formed with a second connection hole (421) opposite to the second long hole (350);
• and the second connecting component (432) passes through the second connection hole (421) and the second long hole (350);
• wherein the plurality of high-stage core plates consists of a second core plate (320) and a third core plate (330), the second core plate (320) and the third core plate (330) are respectively arranged on opposite sides of the first core plate (310) along a second direction, and the first core plate (310), the second core plate (320) and the third core plate (330) are arranged side-by-side, and an adjustable gap (500) formed between the second core plate (320) and the first supporting plate (100) is different from an adjustable gap (500) formed between the third core plate (330) and the first supporting plate (100), and the second direction is perpendicular to the first direction;
• wherein the restraining component (400) further comprises a lateral restraining plate (440) arranged on a side of the energy dissipation component (300), the lateral restraining plate (440) is provided with a first limiting slot (441) at a portion adjacent to the first supporting plate (100) and the energy dissipation component (300), and a second limiting slot (442) at a portion adjacent to the second supporting plate (200) and the energy dissipation component (300);
• the first sliding plate (410) is accommodated in the first limiting slot (441), and the second sliding plate (420) is accommodated in the second limiting slot (442);
• along the first direction, a sliding distance of the first sliding plate (410) in the first limiting slot (441) and a sliding distance of the second sliding plate (420) in the second limiting slot (442) are both greater than a sliding distance of the first connecting component (431) in the first long hole (340) and a sliding distance of the second connecting component (432) in the second long hole (350);
• the lateral restraining plate (440) and the energy dissipation component (300) are arranged along a third direction, and the third direction is perpendicular to both the first direction and the second direction;
• and
• wherein the first core plate (310) comprises a first transition segment (311) and first connection segments (312) arranged at opposing ends of the first transition segment (311), and the first connection segments (312) are configured to connect with the first supporting plate (100) and the second supporting plate (200);
• the second core plate (320) comprises a second transition segment (321) and second connection segments (322) arranged at opposing ends of the second transition segment (321), and the second connection segments (322) are configured to connect with the first supporting plate (100) and the second supporting plate (200);
• the third core plate (330) comprises a third transition segment (331) and third connection segments (332) arranged at opposing ends of the third transition segment (331), and the third connection segments (332) are configured to connect with the first supporting plate (100) and the second supporting plate (200), wherein a first restraining space (600) is formed between the first transition segment (311) and the second transition segment (321), and a second restraining space (700) is formed between the first transition segment (311) and the third transition segment (331);
• the restraining component (400) further comprises a first intermediate restraining plate (460) and a second intermediate restraining plate (470), wherein the first intermediate restraining plate (460) is located in the first restraining space (600), and the second intermediate restraining plate (470) is located in the second restraining space (700), and both the first intermediate restraining plate (460) and the second intermediate restraining plate (470) are fixedly connected to the lateral restraining plate (440).