Self-resetting concrete shear wall with built-in shape memory alloys

Abstract

The invention belongs to the technical field of building structures, and relates to a self-resetting concrete shear wall with built-in shape memory alloys. The self-resetting concrete shear wall comprises a reinforced concrete shear wall panel 1 and shape memory alloy (SMA) devices 2. The SMA devices comprise SMA rods and viscoelastic energy dissipation devices. The elastic restoring force generated by the SMA rods drives the wall to return to an initial position when the horizontal load is reduced, and the problem that the wall resetting ability is decreased caused by the loss of prestress during long-term use does not exist. When the wall is laterally deformed, significant restoring force can be produced to drive the wall to reset without the need of excessive deformation, the reset of the wall is realized, the viscoelastic energy dissipation devices convenient to replace can be designed into viscoelastic energy dissipation devices with different damping characteristics according toengineering requirements, wall dynamic characteristics are improved, and the structural performance is optimized.

Description

technical field [0001] The invention belongs to the technical field of building structures, and relates to a shear wall with reset capability, in particular to a reinforced concrete shear wall with energy dissipation capability and reset capability comprising concrete, steel bars, SMA (shape memory alloy) and viscoelastic materials. force wall. Background technique [0002] Earthquakes can cause damage and collapse of buildings, casualties and property losses, and bring huge economic losses to human society. The traditional idea of ​​earthquake-resistant design is to protect life as the primary goal. This ductile design method will lead to large plastic damage and residual deformation of the structure. Normal production and life. Earthquake recoverable functional structure can restore the function without repair or minor repair after the earthquake, which can reduce the impact of the interruption of the building structure function, such as replaceable connecting beams, sel...

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Problems solved by technology

[0004] The invention aims to solve the problem of obvious residual displacement of the wall caused by the plastic deformation and damage accumulation of the foot of the wall and other parts of the traditional concrete shear wall during the earthquake action, the large lateral displacement of the prestressed self-resetting rocking wall, and the outer surface of the rocking wall. Poor stability and other problems, a self-resetting reinforced concrete shear wall with built-in SMA wall feet is proposed

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