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Perforated yield type energy dissipator

A technology of energy dissipators and connecting holes, applied in the direction of shock absorbers, shock absorbers, springs/shock absorbers, etc., can solve the problems of inconvenient installation and replacement, complex structure, etc., to achieve convenient disassembly and maintenance, energy consumption The mechanism is clear and the effect of improving energy consumption capacity

Active Publication Date: 2021-09-03
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The energy dissipation capacity of the deformable energy dissipation device has been improved, but due to the complex structure, installation and replacement are very inconvenient, and it is difficult to optimize on the basis of the existing structure to greatly improve its energy dissipation capacity

Method used

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  • Perforated yield type energy dissipator
  • Perforated yield type energy dissipator
  • Perforated yield type energy dissipator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Such as figure 2 As shown, a design method of perforated yield energy dissipator. When used alone, the energy dissipator includes a metal disc 1 with holes, a protection rope 5 and two shackles 6 .

[0064] according to figure 1 Computational design is performed as shown in the design flow:

[0065] Determine the tensile length, number of helical turns, and inner diameter of the metal disc when it is working: according to the allowable slip length and space of the steel wire rope in the flexible protection system connected in this embodiment, the tensile length S of the energy dissipator in this embodiment 1 is 1500mm, the number of spiral turns n of the single arm of the metal disc is 1.5, and the inner diameter D 1 80mm;

[0066] Calculate the length of the protection rope according to the stretching length of the metal disc when it is working: according to the formula l=1.1S 1 Calculate the length of the protection rope, the stretching length of the metal disc ...

Embodiment 2

[0079] Such as Figure 7 , Figure 8 As shown, a design method of perforated yield energy dissipator. When the energy waster is used in parallel combination according to this embodiment, it includes 4 metal discs 1 with holes and 1 connecting bolt 10 .

[0080] Such as Figure 9 As shown, when the energy dissipator is used in parallel combination according to this embodiment, according to the method in embodiment 1, four metal discs 1 with holes are connected in parallel through bolts 10 to form the energy dissipator when used in parallel combination according to this embodiment. main structure.

[0081] The main structure ( Figure 9 ) through the connection structure ( Figure 4 ) is connected with the steel wire rope of the flexible protection system to form Figure 7 , Figure 8 Shown is the complete structure of the energy consumer when used in combination according to this embodiment.

[0082] When the flexible protection system is impacted, the steel wire rope i...

Embodiment 3

[0084] Such as Figure 10 As shown, a design method of perforated yield energy dissipator. The energy dissipator comprises two metal discs 1 with holes and one "8"-shaped steel cable 11 when used in series according to this embodiment.

[0085] The main structure ( image 3 ) is connected by an "8"-shaped steel cable, and then connected with the flexible protection system steel wire rope, thus forming Figure 10 Shown is the complete structure of the energy consumer when used in series and combined according to this embodiment.

[0086] According to this embodiment, when the energy consumers are combined in series, the maximum slippage of the steel wire rope of the flexible protection system can be increased by 2 times.

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Abstract

The invention relates to a design method of a perforated yield type energy dissipator,. The energy dissipator comprises a perforated metal disc, a clamp, a protection rope and a connecting structure. The metal disc is provided with spirally distributed through small holes to form a preset tearing path, and holes are reserved in the two ends of the metal disc and are detachably connected with a steel wire rope of a flexible protection system. The protection rope is connected with the steel wire rope through the connecting structure. When the flexible protection system is impacted, the metal disc is torn along the perforation path to form two stretching arms which extend in opposite directions, and the purposes of buffering and energy consumption are achieved through yield deformation of steel. The deformation and brittleness braking performance of the steel are combined onto the modular energy dissipator, the number of the energy dissipators can be designed according to the actual energy consumption requirement for assembly, and the interaction between assemblies in the slope flexible protection system is optimized by adjusting a characteristic response curve. The energy dissipator is reasonable in design, clear in energy dissipation mechanism and capable of being used in a combined mode, and the energy dissipation capacity of the protection system is effectively improved.

Description

technical field [0001] The invention relates to a design method of a perforated yield type energy consumption device, which belongs to the field of slope geological disaster protection. Background technique [0002] As modern infrastructure, transportation facilities and mountain scenic spots are increasingly threatened by disasters such as collapses, rockfalls, landslides, and mudslides, flexible protection systems have gradually developed into one of the most effective protection measures. The flexible protection system is composed of support columns, flexible metal intercepting nets, energy consumers, and anchor systems. When the protection system is impacted, the mesh ring is deformed, the anchor system is tensioned, and the energy consumers work to dissipate the impact energy and prolong the impact time. and reduce impact. In the early stage of the rockfall protection system, frictional energy dissipation devices were used, which were assembled by steel wire ropes thro...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F7/00E01F7/04
CPCF16F7/00E01F7/045
Inventor 齐欣余志祥郝超然赵雷许浒
Owner SOUTHWEST JIAOTONG UNIV
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