Assembled type current vortex tuned mass damper for pedestrian bridge and manufacturing method

A tuned mass damping and assembled technology, which is applied in the direction of erecting/assembling bridges, bridges, bridge parts, etc., can solve the problems of difficult frequency adjustment, inconvenient installation, poor durability, etc., and achieve improved energy consumption efficiency, simple assembly, and durability high effect

Active Publication Date: 2016-03-09
NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
View PDF6 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention aims at the problems of poor durability, inconvenient installation, and difficulty in frequency adjustment of the damping elements of the TMD

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
  • Assembled type current vortex tuned mass damper for pedestrian bridge and manufacturing method
  • Assembled type current vortex tuned mass damper for pedestrian bridge and manufacturing method
  • Assembled type current vortex tuned mass damper for pedestrian bridge and manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0080] Example 1: Combination Figure 1-Figure 13 , an assembled eddy current tuned mass damper for an overpass, comprising a lower base plate 1, a TMD main body 15 and a frequency modulation device, the TMD main body 15 is sleeved on a guide shaft 11 fixed on the lower base plate 1, and the TMD main body 15 is sleeved on The guide shaft 11 is supported by the helical compression spring 3, the top of the guide shaft 11 is installed with a limiting plate 9, and at least two frequency modulation devices are arranged below the TMD main body 15. The TMD main body 15 is stacked with five pieces in order from bottom to top. Steel plate a4, a steel plate b5, a steel plate c6, a steel plate d8 and a steel plate e9; the middle of the steel plate a4 and the steel plate b5 forms a rectangular steel plate chamber 22; the middle of the steel plate c6 is reserved for installing the L-shaped permanent magnet fixing plate 12. Gap; permanent magnets 13 are installed on the L-shaped permanent m...

Example Embodiment

[0120] Example 2: Combination Figure 1-Figure 13 , the present invention includes a lower base plate 1, a guide shaft 11 fastened on the lower base plate, a spring collar 2 passing through the guide shaft, a helical compression spring 3, steel plates a4 to e8 and a limit plate 9, and a nut for fixing the limit plate 10. The L-shaped permanent magnet fixing plate 12 confined in the steel plate chamber 22, the permanent magnet 13 fixed on the L-shaped permanent magnet fixing plate 12 with bolts, is in the middle of the two L-shaped permanent magnet fixing plates 12 and fastened at the bottom. The conductor copper plate 14 of the base plate 1 and the attached frequency modulation device. In the whole device, the steel plates a4 to e8 constitute the tuning mass of the TMD, the helical compression spring 3 provides the stiffness of the TMD, and the permanent magnet 13 and the conductor copper plate 14 together provide the damping of the TMD.

[0121] The lifting mechanism on the ...

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

PropertyMeasurementUnit
Stiffnessaaaaaaaaaa
Stiffnessaaaaaaaaaa
Frequencyaaaaaaaaaa
Login to view more

Abstract

The invention relates to the field of vibration control of a civil engineering structure, in particular to an assembled type current vortex tuned mass damper for a pedestrian bridge and a manufacturing method. A TMD rigidity element is formed by helical compression springs; TMD tuned mass blocks are connected in series through a plurality of steel plates, so that the maneuverability of the tuned mass damper which is artificially assembled is guaranteed; a TMD damping element is formed by a permanent magnet current vortex damper of which the magnetic circuit is optimized, is arranged in a tuned mass block steel plate chamber, and is compact in structure; the distances between permanent magnets fixed on a bottom plate and mass block steel plates are adjusted, so that the adjustment of TMD frequencies is realized. In addition, the integrated design of TMD is slender bar-shaped, the length of the TMD in the span direction of the pedestrian bridge is large, the lateral length of the TMD in the lateral width of the pedestrian bridge is small, and the TMD is conveniently mounted at railings of the pedestrian bridge, so that the influence of the TMD on the function and the appearance of the pedestrian bridge is reduced. The vertical current vortex damper TMD disclosed by the invention has the prominent characteristics of being compact in structure, easy in field assembly, good in durability, convenient to mount at the railings of the pedestrian bridge and the like, and the frequencies can be regulated continuously.

Description

technical field [0001] The invention relates to the field of vibration control of civil engineering structures, in particular to an eddy current tuned mass damper suitable for vertical vibration control of long-span pedestrian bridges and a manufacturing and installing method thereof. Background technique [0002] With the development of urbanization and three-dimensional transportation, more and more large-span pedestrian bridges are being built in my country. However, the existing design codes for pedestrian bridges in China stipulate that the vertical first-order frequency of pedestrian bridges must be greater than 3.0Hz. Single-span pedestrian bridges are difficult to do. In order to facilitate construction, simply supported steel box girder structures are often used for overpasses. However, on the one hand, the inherent damping of steel-structured pedestrian bridges is low; on the other hand, the natural frequency of the first-order vertical vibration of long-span pedes...

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
IPC IPC(8): E01D19/00E01D21/00
CPCE01D19/00E01D21/00
Inventor 汪志昊张闯徐宙元陈银周佳贞郜辉许艳伟皇幼坤
Owner NORTH CHINA UNIV OF WATER RESOURCES & ELECTRIC POWER
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap