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Negative Stiffness Adaptive Energy Storage Shock Resistant Column

A technology with negative stiffness and impact resistance, which is applied in the field of construction engineering and protection engineering, can solve the problems of easy corrosion, short service life, and insufficient anti-collision energy consumption capacity of anti-collision columns, so as to improve energy consumption capacity, high energy consumption, Good effect of promoting application value

Active Publication Date: 2022-05-06
ROCKET FORCE UNIV OF ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the shortcomings of the existing anti-collision pillars, such as insufficient impact resistance and energy consumption, easy to rust, and short service life, and use a composite energy storage-energy consumption core material to store and dissipate energy and additionally design a set of energy storage-energy consumption The energy-inner cylinder unit and the mechanism of amplifying the deformation of the negative stiffness adaptive unit are used to jointly design a new type of negative stiffness adaptive energy storage anti-shock column

Method used

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  • Negative Stiffness Adaptive Energy Storage Shock Resistant Column
  • Negative Stiffness Adaptive Energy Storage Shock Resistant Column
  • Negative Stiffness Adaptive Energy Storage Shock Resistant Column

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] like figure 1 and figure 2 As shown, a negative stiffness self-adaptive energy storage anti-shock column includes an anti-shock outer cylinder, a negative stiffness adaptive unit, an energy storage-energy dissipation inner cylinder unit and an installation unit.

[0033] The installation unit includes an integrally formed installation base 1, installation bolts 2, outer cylinder connection reinforcement layer 3 and inner cylinder connection reinforcement layer 4, the outer cylinder connection reinforcement layer 3 and the inner cylinder connection reinforcement layer 4 are respectively used to strengthen the installation base 1 and the The impact outer cylinder 5 and the impact-resistant inner cylinder 9 are connected, and the base is integrally formed with the impact-resistant outer cylinder and the inner cylinder without welding; the installation base is fixed to the foundation through high-strength mounting bolts to ensure a firm connection.

[0034] The anti-shock...

Embodiment 2

[0041] Hypothesis 1: Remove Example 1 ie figure 1 Negative Stiffness Adaptive Unit 8, completed with image 3 , Figure 4 Same test.

[0042]Hypothesis 2: Remove Example 1 ie figure 1 Negative stiffness adaptive unit 8 and replace it with a traditional shock absorber to complete the same image 3 , Figure 4 Same test.

[0043] Hypothesis 3: Taking Example 1 ie figure 1 The non-Newtonian fluid shear reinforcement material in the middle anti-shock inner cylinder 9 is replaced by solid steel, and the image 3 , Figure 4 Same test.

[0044] Hypothesis 4: Remove Example 1, namely figure 1 Negative stiffness self-adaptive unit 8, at the same time replace the non-Newtonian fluid shear reinforcement material in the anti-shock inner cylinder 9 with solid steel, complete the same image 3 , Figure 4 Same test.

[0045] Hypothesis 5: Remove Example 1, namely figure 1 Negative stiffness self-adaptive unit 8 is replaced by traditional shock absorber, and the non-Newtonian f...

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Abstract

A negative-stiffness self-adaptive energy-storage anti-shock column used in the fields of construction engineering and protection engineering, comprising an anti-shock outer cylinder, a negative-stiffness self-adaptive unit, an energy storage-energy-dissipation inner cylinder unit and an installation unit. The invention establishes a double anti-shock mechanism, uses the anti-shock outer cylinder as the first anti-shock defense line, uses the negative stiffness adaptive unit to amplify the deformation of the inner cylinder caused by the impact of the outer cylinder, and uses the energy storage-energy consumption inner cylinder to absorb and Enhanced dissipation of impact energy. Through the comprehensive utilization of the negative stiffness adaptive unit set between the inner cylinder and the outer cylinder and the composite energy storage-energy dissipation core material of the inner cylinder, the amplified restoring force and damping force are effectively realized under the action of a very short impact, shortening the The reaction time of the anti-shock column under impact is improved, and the anti-shock efficiency of the anti-shock column is significantly improved. The device of the invention is convenient and flexible to set up, can effectively absorb and dissipate impact energy, has the characteristics of multiple energy storage, high energy consumption, high robustness, and the like, and has good popularization and application value.

Description

technical field [0001] The invention belongs to the technical field of construction engineering and protection engineering. Background technique [0002] In recent years, with the complexity of the security environment, schools, government passages, enterprises, institutions, banks, embassies, airports and other places across the country have installed a large number of steel pipe anti-collision columns to ensure the safety of pedestrians and facilities In emergencies (such as car bomb attacks, out-of-control vehicle collisions, etc.), vehicles cause accidental injuries to pedestrians and facilities. However, in practice, due to the limited impact resistance, energy storage and energy consumption capacity of the anti-shock column, after being hit by a vehicle, this type of steel tube anti-collision column often undergoes serious deformation, and even cannot meet the expected impact resistance. performance requirements. For protection projects with high safety level require...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E01F15/00
CPCE01F15/003
Inventor 王沿朝赵志鹏陈清军刘彬王鑫峰
Owner ROCKET FORCE UNIV OF ENG
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