Prestressed damping part capable of improving building structural element damp

Abstract

The invention relates to a prestressed damping part capable of improving building structural element damp, which comprises a prestressed steel rod, a bushing, an anchor plate and a stretching anchorage device. The prestressed steel rod is arranged in the bushing, one end thereof is connected with the anchor plate and the other end thereof extends into the stretching anchorage device. After prestressed stretch-draw, the prestressed steel rod is in a drawn state. The prestressed damping part can be arranged at a longitudinal fiber tension and compression distortion large area in a structural element, as under the section bending resistant longitudinal ribs of a reinforced concrete beam column element or at the flange inner side of a steel flexure member or at the section middle part of a steel support. When the structural member vibrates, the stretching strain of the prestressed steel rod in the prestressed damping part is further increased. Because of the prestressed force, the prestressed steel rod in the prestressed damping part is bent earlier than member reinforcing bars or rolled steel and provides hysteretic damping. The invention can be applied to the damping control of new constructions and the seismic hardening of old constructions.

Description

technical field [0001] The invention relates to damping and shock-absorbing control of building structures and seismic reinforcement of existing buildings, in particular to damping and shock-resistant devices placed in structural components or attached to the surface of structural components. Background technique [0002] In recent years, there have been many earthquakes with great destructive power in my country. Among them, the Wenchuan earthquake and Yushu earthquake caused the loss of life and property, and the whole country mourns for it. Most of my country's cities and important industrial buildings are located in earthquake zones, and earthquake hazards will threaten us for a long time. Therefore, it has important economic value and social significance to reduce the destructive loss of building structures in earthquake action. [0003] The current commonly used shock absorption technology is mainly through the installation of dampers inside the building. The inter-s...

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Problems solved by technology

[0005] The purpose of the present invention is to solve the above-mentioned defects of installing dampers in existing building structures and the defect that the seismic reinforcement method cannot improve structural damping, and proposes a prestressed shock absorbing part that can improve the damping of building structural components. It can be installed on the surface of reinforced concrete components or welded in steel structural components to improve the damping of the components, and then realize the shock absorption or reinforcement of the entire building. Its use is not limited by the internal space of the building. It has a wide range of applications and can be used anywhere In reinforced concrete members and steel structural members

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