Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
The invention provides an SMA beam falling prevention device, and relates to the field of bridge engineering. The SMA beam falling prevention device comprises a protection frame; a first anchoring block is arranged in the protection frame; a first stop block is arranged on one side of the first anchoring block; a pressure-bearing spring is arranged on the rear side of the first stop block; a second stop block is arranged on the front side of the pressure-bearing spring, an SMA tension cable is arranged in the protection frame, a fixed limiting block is arranged on one side of the first anchoring block, a limiting hole is formed in the protection frame, a second anchoring block is arranged on the outer side of the other end of the SMA tension cable, and a fastening bolt is arranged on one side of the second anchoring block and is in threaded connection with the SMA tension cable. The SMA beam falling prevention device is achieved through compression deformation of the pressure-bearing spring, the system rigidity is small, the shock absorption and isolation effect of a shock absorption and isolation support is not affected, large beam body stress is transmitted to a pier stud so thatbeam body displacement can be restrained, beam falling can be prevented, self-resetting of the beam body and the support after deformation can be helped, and residual displacement of the beam body and the support can be reduced.
本发明提供一种SMA防落梁装置，涉及桥梁工程领域。该SMA防落梁装置包括保护框，保护框内部设有第一锚固块，第一锚固块一侧设有第一挡块，第一挡块后侧设有承压弹簧，承压弹簧前侧设有第二挡块，保护框内部设有SMA拉力索，第一锚固块一侧设有固定限制块，保护框上开设有限制孔，SMA拉力索另一端外侧设有第二锚固块，第二锚固块一侧设有紧固螺栓，紧固螺栓与SMA拉力索螺纹连接。该SMA防落梁装置通过承压弹簧的受压变形来实现，系统刚度小，不影响减隔震支座的减隔震效应，将较大的梁体受力传递给墩柱，以此约束梁体位移，防止落梁，可帮助梁体和支座在变形后自复位，减小梁体和支座的残余位移。
The invention provides an SMA beam falling prevention device, and relates to the field of bridge engineering. The SMA beam falling prevention device comprises a protection frame; a first anchoring block is arranged in the protection frame; a first stop block is arranged on one side of the first anchoring block; a pressure-bearing spring is arranged on the rear side of the first stop block; a second stop block is arranged on the front side of the pressure-bearing spring, an SMA tension cable is arranged in the protection frame, a fixed limiting block is arranged on one side of the first anchoring block, a limiting hole is formed in the protection frame, a second anchoring block is arranged on the outer side of the other end of the SMA tension cable, and a fastening bolt is arranged on one side of the second anchoring block and is in threaded connection with the SMA tension cable. The SMA beam falling prevention device is achieved through compression deformation of the pressure-bearing spring, the system rigidity is small, the shock absorption and isolation effect of a shock absorption and isolation support is not affected, large beam body stress is transmitted to a pier stud so thatbeam body displacement can be restrained, beam falling can be prevented, self-resetting of the beam body and the support after deformation can be helped, and residual displacement of the beam body and the support can be reduced.
本发明提供一种SMA防落梁装置，涉及桥梁工程领域。该SMA防落梁装置包括保护框，保护框内部设有第一锚固块，第一锚固块一侧设有第一挡块，第一挡块后侧设有承压弹簧，承压弹簧前侧设有第二挡块，保护框内部设有SMA拉力索，第一锚固块一侧设有固定限制块，保护框上开设有限制孔，SMA拉力索另一端外侧设有第二锚固块，第二锚固块一侧设有紧固螺栓，紧固螺栓与SMA拉力索螺纹连接。该SMA防落梁装置通过承压弹簧的受压变形来实现，系统刚度小，不影响减隔震支座的减隔震效应，将较大的梁体受力传递给墩柱，以此约束梁体位移，防止落梁，可帮助梁体和支座在变形后自复位，减小梁体和支座的残余位移。