Novel self-reset friction damper

A friction damper and self-reset technology, which is applied in building components, earthquake-proof and other directions, can solve the problems of large shear deformation, serious damage, and difficult repair, and achieve strong self-resetting ability, strong self-resetting ability, and improve production efficiency. Effect

Active Publication Date: 2014-09-10
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the high-rise shear wall structure, the coupling beams are subjected to large deformation, and the traditional reinforced concrete connection section is severely damaged under the earthquake, which brings great difficulties to the repair work after the earthquake
In the frame structure, the shear deformation of the floor is large, the traditional damper cannot provide good self-resetting ability, and it is difficult to repair after the earthquake

Method used

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Examples

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Effect test

Embodiment 1

[0034] Such as figure 1 The shown novel self-resetting friction damper of the present invention includes: anchoring steel bar 101, section steel connection section 102, steel plate concrete connection section 103, prestressed cable 104 and friction energy dissipation plate 105 several parts.

[0035] Anchor steel bars 101 are welded on the outside of section steel connecting section 102 and poured in the reinforced concrete main structure, such as figure 2 shown. According to needs, the anchoring steel bars 101 can be arranged in 4-6 rows, with 2-3 in each row.

[0036] The section steel connecting section 102 is welded by multiple parts, including: welded I-shaped steel plate 1021, stiffener 1022; at the same time, it is necessary to reserve a hole 1023 for the prestressed cable 104 on the flange of the welded I-shaped steel plate 1021; The shear connector 1024 is a small piece of steel plate welded on the section steel connection section 102, and is used to bear the shear...

Embodiment 2

[0042] Figure 9As another construction form of the invention, the prestressed cable 104 only passes through the left section steel connection section 102 , and the right side is anchored on the outside of the steel plate concrete connection section 103 . The steel plate concrete connecting section 103 and the steel connecting section 102 on the right are only connected by the shear connecting piece 1024 and the frictional energy dissipation plate 105 . Under an earthquake, the left shaped steel connecting section 102 bears bending moment and shearing force, and the right shaped steel connecting section 102 only bears shearing force.

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Abstract

The invention discloses a novel self-reset friction damper, and belongs to the technical field of energy dissipation and shock absorption of civil engineering structures. The structure of the damper is that the two sides of an outer covering steel plate concrete connecting section are respectively provided with a profile steel connecting section; anchoring steel bars are welded to the outer sides of the profile steel connecting sections, and are poured in a reinforced concrete main structure simultaneously; the bottom ends of the outer covering steel plate concrete connecting sections and the bottom ends of the profile steel connecting sections are connected through friction energy dissipation plates; the outer covering steel plate concrete connecting sections are connected with the profile steel connecting section on one side or the profile steel connecting sections on the two sides through a plurality of prestressed cables. When the main structure deforms under seismic excitation, the prestressed cables anchored on the outer sides of profile steel are extended, and self-reset tension force is provided; meanwhile, the friction energy dissipation plates connected between the profile steel and the concrete connecting sections deform relatively, seismic energy is dissipated, and energy dissipation and shock absorption are achieved.

Description

technical field [0001] The invention specifically relates to a novel self-resetting friction damper, which belongs to the technical field of energy dissipation and shock absorption of civil engineering structures. Background technique [0002] The development of today's buildings tends to be more and more tall, and the high-rise shear wall structure composed of composite members or reinforced concrete members is a structural form that is often used in buildings. In the high-rise shear wall structure, the coupling beam has suffered a large deformation, and the traditional reinforced concrete connection section has been severely damaged under the earthquake, which has brought great difficulties to the repair work after the earthquake. In the frame structure, the shear deformation of the floor is large, the traditional damper cannot provide good self-resetting ability, and it is difficult to repair after the earthquake. The self-resetting friction damper is a kind of energy-di...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98
Inventor 潘鹏邓开来吴守君刘继新
Owner TSINGHUA UNIV
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