US 11,702,855 B1
Anti-seismic braced scissor stairs and frame stairs system
Xing Fan, Beijing (CN)
Assigned to CHINA AEROSPACE CONSTRUCTION ENGINEERING GROUP CO., Beijing (CN)
Filed by CHINA AEROSPACE CONSTRUCTION ENGINEERING GROUP CO., LTD., Beijing (CN)
Filed on Mar. 3, 2023, as Appl. No. 18/116,895.
Claims priority of application No. 202210882709.3 (CN), filed on Jul. 26, 2022.
Int. Cl. E04H 9/02 (2006.01); E04F 11/022 (2006.01)
CPC E04H 9/021 (2013.01) [E04F 11/022 (2013.01)] 10 Claims
OG exemplary drawing
 
1. An anti-seismic braced scissor stairs, comprising:
a first platform, a second platform, a third platform, a fourth platform, a fifth platform and a sixth platform; the first platform, the third platform and the fifth platform are connected with a wall at one side from top to bottom successively; the second platform, the fourth platform and the sixth platform are connected with a second wall at a second side from top to bottom successively;
a first stair slab and a first inclined beam are provided between the first platform and the fourth platform;
a second stair slab and a second inclined beam are provided between the second platform and the third platform;
a third stair slab and a third inclined beam are provided between the third platform and the sixth platform;
a fourth stair slab and a fourth inclined beam are provided between the fourth platform and the fifth platform;
the first inclined beam and the second inclined beam are crosswise arranged to form a first cross bracing, and the first cross bracing is connected at two sides of the first cross bracing with the first stair slab and the second stair slab, respectively;
the third inclined beam and the fourth inclined beam are crosswise arranged to form a second cross bracing, and the second cross bracing is connected at two sides of the second cross bracing with the third stair slab and the fourth stair slab, respectively;
the first inclined beam is connected at one end of the first inclined beam with a stair beam of the first platform, and connected at a second end of the first inclined beam with the fourth inclined beam; a longitudinal axis of the first inclined beam is parallel to a longitudinal axis of the first stair slab;
the fourth inclined beam is connected at one end of the fourth inclined beam with a stair beam of the fourth platform, and connected at a second end of the fourth inclined beam with a stair beam of the fifth platform; a longitudinal axis of the fourth inclined beam is parallel to a longitudinal axis of the fourth stair slab;
the second inclined beam is connected at one end of the second inclined beam with a stair beam of the second platform, and connected at a second end of the second inclined beam with the third inclined beam; a longitudinal axis of the second inclined beam is parallel to a longitudinal axis of the second stair slab;
the third inclined beam is connected at one end of the third inclined beam with a stair beam of the third platform, and connected at a second end of the third inclined beam with a stair beam of the sixth platform; a longitudinal axis of the third inclined beam is parallel to a longitudinal axis of the third stair slab.