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An internal climbing type construction tower crane natural vibration frequency monitoring device and monitoring method

A monitoring device and a technology of natural vibration frequency, which is applied in the directions of transportation and packaging, load hanging components, etc., can solve the problems of inability to monitor tower crane frequency on site, improve data processing speed and accuracy, avoid construction interference, and facilitate installation Effect

Active Publication Date: 2018-07-31
BEIJING UNIV OF TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This method can make the on-site monitoring of the tower crane more accurate, and solves the problem that the frequency of the tower crane cannot be monitored on-site at present. In addition, it also provides a kind of actual measurement data obtained by the above-mentioned device measurement. Through this processing method, the low-order frequency of the tower crane can be obtained. Provide a basis for the subsequent analysis of the dynamic characteristics of the tower crane

Method used

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  • An internal climbing type construction tower crane natural vibration frequency monitoring device and monitoring method
  • An internal climbing type construction tower crane natural vibration frequency monitoring device and monitoring method
  • An internal climbing type construction tower crane natural vibration frequency monitoring device and monitoring method

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Experimental program
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Effect test

Embodiment approach

[0036] On-site monitoring and data processing of natural frequency of internal climbing construction tower crane:

[0037] In the specific implementation, firstly, according to the site construction situation, the parameters of the tower crane to be measured are known, the length of the required data line is calculated, and the sensors and data lines are arranged sequentially from top to bottom.

[0038] Secondly, arrange measuring points for the jib (2), A-frame (4) and tower body (1) of the tower crane, wherein a No. 1 ICP acceleration sensor (5), 2 No. ICP acceleration sensor (6), a No. 3 ICP acceleration sensor (7) and a No. 4 ICP acceleration sensor (8) are arranged at the end and middle of the boom (2), and the top X and Y directions of the A-frame are respectively arranged A No. 5 ICP acceleration sensor (9), a No. 6 ICP acceleration sensor (10), and a total of six sensors are arranged.

[0039] The field dynamic test adopts the environmental excitation method. The sa...

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Abstract

The invention discloses an internal climbing type construction tower crane natural vibration frequency monitoring device and a monitoring method thereof. The device comprises ICP acceleration sensors, a data line, an IMC data collection instrument and real-time monitoring software. The ICP acceleration sensors are connected with the IMC data collection instrument through the data line, the IMC data collection instrument is provided with the real-time monitoring software, and the ICP acceleration sensors are distributed on an internal climbing type construction tower crane. The ICP acceleration sensors are structural test type acceleration sensors and are small in size and mass; for the tower crane of a high-rise structure, measuring point distribution is high, mounting is convenient, and therefore the sensors are selected conveniently. Site monitoring of the tower crane is more accurate, the defect that the frequency of the tower crane cannot be monitored on site at present is overcome, and in addition, actual measuring data obtained through the above device are provided; through the treatment method, the low-order frequency of the tower crane can be obtained, and the basis is provided for subsequent power characteristic analysis of the tower crane.

Description

technical field [0001] The invention relates to a device for monitoring the natural frequency of a climbing construction tower crane in a super high-rise building and a data processing method thereof, belonging to the technical field of structural engineering. technical background [0002] With the rapid development of the economy, more and more super high-rise buildings appear in various parts of our country. Although the seismic safety of building structures has become a concern of the public, the seismic problems of large crane equipment during the construction process have not attracted enough attention. Pay attention to. In the construction of super high-rise buildings, the internal climbing construction tower crane, as the main equipment for vertical transportation, is located on the upper part of the core tube, and its lateral stiffness is much smaller than that of the core tube. In this way, the seismic response of the coupling between the main structure and the tow...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66C13/16
CPCB66C13/16
Inventor 闫维明申彤周大兴李成飞戴颖楠郝可航
Owner BEIJING UNIV OF TECH
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