Research on Identification of Time-Varying Cable Force-Reference-Cited by-同舟云学术

Research on Identification of Time-Varying Cable Force

Published:2022 Issue: Volume: Page:
ISSN:2221-3791
Container-title:IABSE Congress, Nanjing 2022: Bridges and Structures: Connection, Integration and Harmonisation
language:
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Author:

Zhang Junzheng¹,Shen Ruili²

Affiliation:

1. CCCC Second Harbor Engineering Company LTD., Wuhan 430040, China; Key Laboratory of Large-span Bridge Construction Technology, Wuhan 430040, China; CCCC Highway Bridge National Engineering Research Centre Co. Ltd, Wuhan 430040, China

2. Professor, School of Civil Engineering, Southwest Jiaotong University, Chengdu 610031, China

Abstract

<p>Cables have been widely used in the construction of cable-supported bridge due to their light weight and high strength mechanical properties. As the key component of cable supported bridge, real-time monitoring of the time-varying cable force of cable is very important for the construction, operation and maintenance of long-span bridges. Based on the time-frequency analysis method of multisynchrosqueezing transform, a new identification method of time-varying cable force is proposed. First, the theory of time-varying modal parameter identification based on time-frequency analysis method is studied. On this basis, the relationship between the time-varying cable force and the instantaneous natural frequency is obtained. Finally, the accuracy of the proposed method under different conditions is studied. The results show that the proposed time-varying cable force identification method has good accuracy and robustness.</p>

Publisher

International Association for Bridge and Structural Engineering (IABSE)

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