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Post-earthquake repairable diamond steel truss energy dissipation fuse

A fuse and steel truss technology, which is applied in the direction of earthquake-proof, protective buildings/shelters, building components, etc., can solve the problems of truss tension/compression rods and node damage, and cannot be quickly repaired, achieving good independence and convenience. Effects of repair and replacement, improvement of seismic performance

Active Publication Date: 2019-03-08
INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In view of this, the present invention proposes a repairable diamond-shaped steel truss energy-dissipating fuse for the existing steel truss structure in which the tension / compression rods and joints of the truss are seriously damaged during the earthquake, and cannot be quickly repaired after the earthquake.

Method used

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  • Post-earthquake repairable diamond steel truss energy dissipation fuse
  • Post-earthquake repairable diamond steel truss energy dissipation fuse
  • Post-earthquake repairable diamond steel truss energy dissipation fuse

Examples

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Effect test

Embodiment 1

[0027] The structure of this embodiment is shown as figure 1 , including the prefabricated part 1 welded to the end of the tension / compression rod of the truss, the connector 2 with screw holes welded to the surface of the prefabricated part 1, the rigid rod 3 with screw holes at both ends connected to the connector The high-strength bolt 4 of the rod 3 and the bearing washer 5 are connected to the spring 6 with the bearing washer 5 and the angle-limiting rotation ball hinge 7 at both ends, and the angle-limiting rotation ball hinge 7 welded to the surface of the central connection ball 8, the sleeve Place the spring sleeve 9 of the helical section of the spring 6, and fill the lead 10 between the two. In the fuse unit, under the action of lateral loads such as earthquakes, the fuse deforms prior to the rods, concentrating structural deformation, and protecting the main structure. The 3-end connection interface of each rigid rod generates friction to provide damping force for...

Embodiment 2

[0037] Figure 11 As the overall structure diagram of this embodiment, multiple parallel fuses can be arranged at the tension / compression rod end of the truss as required, for example, fuses are arranged around the section. Improve the bearing capacity and stability of the connection.

Embodiment 3

[0039] Figure 12This is the overall structure diagram of this embodiment. A plurality of fuses are space-combined sharing the central connection ball 8, for example, two fuse units are cross-combined, so that the planar fuse becomes a spatial node fuse with multi-directional and multi-angle deformation capabilities.

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Abstract

The invention relates to a post-earthquakerepairable diamond steel truss energy dissipation fuse after an earthquake. The post-earthquakerepairable diamond steel truss energy dissipation fuse is usedfor energy dissipation and shock absorption of pulling / compressive structures such as steel trusses. The post-earthquakerepairable diamond steel truss energy dissipation fuse after the earthquake comprises prefabricated parts, connecting parts with screw holes, rigid rods with screw holes at the two ends, friction type high-strength bolts, gaskets with bearings, springs, limited-angle rotating ball joint, a center connecting ball, spring sleeves, and a lead part. According to the post-earthquakerepairable diamond steel truss energy dissipation fuse after the earthquake, as a part of a steel truss structure, the repairable diamond steel truss energy dissipation fuse is arranged at the pulling / compressive rod end of the steel truss, under the horizontal load action such as the earthquake, damping is provided through friction connection and the lead at rigid rod joints, earthquakeenergy is dissipated, and thus the action of energy dissipation and shock absorption is achieved; elastic force of the springs provides deformation restoring force, thus the fuse has a good ability to restore deformation, the overall structure in the earthquake is protected, and the dual functions of energy dissipation and a protection structure of the fuse are reflected; and after the earthquake, the damaged friction joints, sleeves or lead can be repaired or replaced quickly, and thus the structure function is quickly recovered.

Description

technical field [0001] The invention belongs to the technical field of building energy dissipation and shock absorption, and in particular relates to a repairable diamond-shaped steel truss energy dissipation fuse after an earthquake. Background technique [0002] The intensity, time and space of earthquakes are highly uncertain, making them cause serious damage to house structures, and at the same time pose a major threat to people's life and property safety. The investigation of earthquake damage shows that the earthquake damage of steel truss structures is mainly the failure of rod end connections, buckling of members and failure of joints. Due to the low degree of static indetermination of the truss structure, the damage of important members and joints will seriously affect the seismic performance of the overall structure, and even cause the collapse of the structure. It is difficult to assess the damage of non-collapsed structures after the earthquake. While increasing...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E04B1/98E04H9/02
CPCE04H9/02
Inventor 张令心李行朱柏洁林旭川马加路
Owner INST OF ENG MECHANICS CHINA EARTHQUAKE ADMINISTRATION
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