Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt

A variable stiffness, semi-active technology, applied in the field of permanent support engineering, semi-active variable stiffness, energy dissipation and shock-absorbing control bolts, can solve problems such as excessive deformation of unstable rock and soil, instability and collapse, and achieve space Effects of small size, reduced hazards, and simple structure

Active Publication Date: 2014-02-26
LANZHOU UNIVERSITY OF TECHNOLOGY
View PDF6 Cites 20 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a semi-active variable stiffness energy-dissipating shock-absorbing control bolt to solve the problem of excessive deformation of the bolt-sprayed support structure and unstable rock and soil caused by earthquakes, or even instability and collapse, which cannot be self-adjusted. , improve the anti-seismic performance of the anchor shotcrete support structure and the safety of the support body

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt
  • Semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt
  • Semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0007] Such as figure 2 As shown, the present invention is A semi-active variable stiffness energy dissipation shock-absorbing control anchor rod, the control anchor rod is composed of a controller 1, a communication line 2, a sensor 3, a variable stiffness control device 12, a sleeve 20, a hollow anchor pipe 5, an anchor 10, an anchor The spring 11 and the support structure 4 are composed; wherein the variable stiffness control device 12 is composed of a hydraulic cylinder 13, a double rod piston 14, an oil liquid 16, a bypass pipeline 17, an electro-hydraulic servo valve 18, a first stiffness spring 19a, a second Stiffness spring 19b, support box 21 and backing plate 22 connected by bolts 23; controller 1 is a PC with A / D and D / A data acquisition and conversion board, installed with control algorithm and electro-hydraulic servo valve The PC of the driving software of 18 can control the open / close state of electro-hydraulic servo valve 18; The shape of double rod piston 14...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt. The anchor bolt consists of a controller (1), a communicating line (2), a sensor (3), a variable-stiffness control device (12), a sleeve (20), a hollow anchor pipe (5), an anchor gear (10), an anchoring spring (11) and a support structure (4), wherein the variable-stiffness control device (12) consists of a hydraulic cylinder (13), a dual-striking piston (14), oil (16), a bypass pipeline (17), an electro-hydraulic servo valve (18), a stiffness spring (19a), a stiffness spring (19b), and a support box (21) and a base plate (22) connected through a bolt (23). According to the semi-active variable-stiffness energy dissipation and seismic mitigation control anchor bolt, the unrecoverable problems of excessive deformation of an anchoring and shotcreting support structure, unavailable self-adjustment of the support structure, even damages and the like caused by seismic actions are solved, and the seismic resistance of the anchoring and shotcreting support structure and the safety stability of a support body are improved.

Description

technical field [0001] The invention belongs to the field of vibration control of anchor-spray support structures, in particular to a semi-active variable stiffness energy-dissipating shock-absorbing control bolt, which is especially suitable for permanent support projects such as tunnels, mine roadways, and high and steep slopes. Background technique [0002] Earthquake is one of the most serious natural disasters faced by human beings. It caused a series of disasters such as building collapse, tunnel collapse and landslide, which brought huge loss of life and property to human beings. my country is located between the Pacific Seismic Belt and the Eurasian Seismic Belt, and is one of the countries that suffer the most serious earthquake disasters. Therefore, the task of earthquake resistance and disaster prevention is very arduous. Seismic design is mainly committed to ensuring that the structure itself has a certain strength, stiffness and ductility to meet certain seismic...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E02D5/74E21D21/00
Inventor 董建华王永胜董旭光王冰霞吴意谦刘彦东张媛代涛袁方龙
Owner LANZHOU UNIVERSITY OF TECHNOLOGY
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products