A Method for Selecting and Adjusting Seismic Waves in Analysis of Seismic Response of Structures

A technology of reaction analysis and adjustment methods, applied in special data processing applications, instruments, calculations, etc., can solve the problems of difficult and impossible wave selection work, and achieve the effect of reducing the discreteness of analysis results and high practicability

Active Publication Date: 2017-03-15
GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
View PDF1 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, if the natural seismic wave is required to have a high consistency with the target spectrum in each cycle, the wave selection work will be more difficult or even impossible to complete

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
  • A Method for Selecting and Adjusting Seismic Waves in Analysis of Seismic Response of Structures
  • A Method for Selecting and Adjusting Seismic Waves in Analysis of Seismic Response of Structures
  • A Method for Selecting and Adjusting Seismic Waves in Analysis of Seismic Response of Structures

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0044] A 4-span simply supported and then continuous T-beam bridge is a widely used structural form in bridge engineering, as shown in the attached figure 1 Shown: The bridge adopts a 4×30-meter simply supported and then continuously prestressed concrete T-beam bridge. The bridge width is 12 meters. The single-span bridge is composed of 6 T-beams. The single beam is 2 meters wide and 2 meters high. The single beam has a mass of 85 tons. The lower part of the bridge is framed piers and gravity U-shaped abutments. The abutment part adopts GYZF4450x89 circular PTFE slide rubber bearing, and the pier part adopts high damping rubber bearing.

[0045] The proposed construction site of the bridge is 8 degrees 0.2g, a Class II site, the characteristic period Tg of the response spectrum is 0.45s, and the peak acceleration of the response spectrum is 0.765g according to the specification. The calculated mass participation coefficient of the first-order mode shape of the bridge is 0.90...

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 an earthquake wave selection and adjustment method used for structural earthquake response analysis. The structural earthquake response analysis comprises the following steps: firstly, according to the spectral pattern characteristics of an earthquake dynamic response spectrum and the user-defined structural dynamic magnification factors, selecting a contrast interval of a beam bridge structure natural vibration period Tn; secondly, selecting a high-band contrast interval of the earthquake dynamic response spectrum; thirdly, respectively calculating the corresponding area ratios KN and KT in the two contrast intervals of a natural wave response spectrum curve and a target spectrum curve; fourthly, selecting qualified natural earthquake waves (0.8<=KT / KN<=1.2); setting a regulation factor to enable the response spectrum areas in the two intervals of natural earthquake waves to be close to the target spectrum area; taking response of a pier as the research target to achieve dynamic plastoelasticity analysis on bridges. Through double-parameter wave selection principle, the difficulty in selecting earthquake waves is greatly lowered, and the reliability of the vibration time interval analysis result of the bridge is guaranteed. Therefore, the earthquake wave selection and adjustment method provided by the invention is practical.

Description

technical field [0001] The invention belongs to the field of anti-seismic design of bridge structures, and in particular relates to a method for selecting and adjusting seismic waves in structural seismic response analysis. The technology can be used for selecting and adjusting natural seismic waves in time history analysis of bridge anti-seismic design. Background technique [0002] Bridges are a key part of the "lifeline project" and play an extremely important role in emergency rescue, earthquake relief, and post-disaster reconstruction after an earthquake. Strong earthquakes may lead to serious damage and collapse of bridges, interrupt traffic, hinder earthquake relief work, cause greater loss of life and property, and expand the extent of earthquake damage. my country's newly promulgated "Seismic Design Rules for Highway Bridges" (JTG / TB02-01-2008) divides bridges into four categories: A, B, C, and D, and stipulates that E1 is required for all three types of bridges. Fo...

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 Patents(China)
IPC IPC(8): G06F19/00
Inventor 张云周晓蓉谭平马玥
Owner GUANGXI TRANSPORTATION SCI & TECH GRP CO LTD
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