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Seismic performance abnormality positioning method for seismic support hangers of subway project

A technology of seismic performance and positioning method, which is applied in the testing of measuring devices, instruments, and mechanical parts, etc., can solve the problems of deformation of support and hanger, complicated operation, high labor intensity, etc., and achieve the effect of improving accuracy and high degree of intelligence.

Inactive Publication Date: 2018-07-10
JIANGSU YIDINGGU ELECTROMECHANICAL TECH CO LTD
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, there are various types of anti-seismic support and hanger structures for the subway system in China, and these support and hangers will be deformed and half-hanging after being used or encountered collisions or experienced strong earthquakes, posing safety hazards
Once the seismic support of the subway project is damaged by the earthquake, it will bring great difficulties to the earthquake emergency and post-earthquake repair work
On the one hand, in order to avoid safety accidents, it is often chosen to replace all or check the hangers one by one, which is cumbersome and labor-intensive, which increases labor costs
On the other hand, the environment of subway lines that have been opened to traffic is closed, and the seismic performance of supports and hangers is difficult to quantify in real time

Method used

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  • Seismic performance abnormality positioning method for seismic support hangers of subway project
  • Seismic performance abnormality positioning method for seismic support hangers of subway project

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Embodiment 1

[0033] Such as figure 1 As shown, the embodiment of the present invention provides a method for locating the abnormal seismic performance of the seismic support and hanger of a subway project, including the following steps.

[0034] S1. Set the sensor:

[0035] For the diagonal brace of each seismic support and hanger in the subway project, an acceleration sensor is installed on each diagonal brace to monitor the acceleration response caused by subway trains and environmental loads.

[0036] S2. Calculate the representative value of the vibration response of the anti-seismic support and hanger caused by the subway train:

[0037] With 10 minutes as the calculation interval, wavelet packet decomposition is performed on the acceleration response of each sensor; the wavelet packet decomposition coefficient C of the last layer after wavelet packet decomposition is used 0,N (N is the wavelet packet decomposition scale, N=actual frequency / wavelet center frequency) to reconstruct t...

Embodiment 2

[0045] Such as figure 2 As shown, the present invention provides the device that can be used for the abnormal location method of the seismic performance of the seismic support and hanger of subway engineering, consisting of the following parts: structure 1, C-shaped channel steel 21, anti-seismic brace 31, acceleration sensor 4.

[0046] Among them, between the C-shaped channel steel 21, between the structure body 1 and the C-shaped channel steel 21, use a long screw 22 to connect; between the structure body 1 and the anti-seismic brace 31, use an anti-seismic connecting member 32 to connect, and the C-shaped channel steel 21 and the C-shaped channel steel The anti-seismic braces 31 are connected by an anti-seismic quick connection member 33, and the acceleration sensor 4 is installed on the anti-seismic braces 31.

[0047] The anti-seismic supports and hangers of subway engineering monitored by the present invention are not limited to figure 2 The structure shown can also ...

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Abstract

The invention discloses a seismic performance abnormality positioning method for the seismic support hangers of a subway project. The method includes the following steps that: S1, sensors are set; S2,the representative values of the vibration responses of the seismic support hangers caused by a subway train are calculated; S3, the mean value control charts of the seismic support hangers under intact states are built; and S4, a seismic support hanger with abnormal seismic performance is positioned. With the method of the invention adopted, an effective decision basis can be provided for the positioning of the seismic performance abnormalities of large-scale seismic support hangers; the precision of seismic monitoring is improved; people are not required to watch over a test site, and automated monitoring is realized; multi-point monitoring is adopted, so that whether the seismic performance of seismic support hangers on a whole subway line is abnormal or not can be determined through comparative analysis; multi-point real-time monitoring can be performed on a subway tunnel; and the seismic performance of the seismic support hangers can be monitored around the clock for a long time.The method has high intelligence degree and is safe and reliable.

Description

technical field [0001] The invention relates to a method for locating the abnormality of the seismic performance of a subway engineering seismic support and hanger, belonging to the field of infrastructure structure safety and health monitoring. Background technique [0002] With the continuous acceleration of the urbanization process in our country, the urban population is increasing, which has brought enormous pressure to urban traffic. The subway has been popularized and applied because of its advantages of fast, convenient, and large passenger capacity. At present, major cities are vigorously building subways. According to the medium and long-term development plan of rail transit, 2,500 kilometers of rail transit lines will be built during 2011-2015, and 3,000 kilometers will be built during 2016-2020. By the end of 2020, the national rail transit The operating mileage will reach 7,000 kilometers. [0003] However, at present, domestic subway construction mostly present...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M13/00
CPCG01M13/00
Inventor 丁幼亮梁启慧朱浩樑
Owner JIANGSU YIDINGGU ELECTROMECHANICAL TECH CO LTD
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