Frictional Resistance Between Main Cable and Saddle for Suspension Bridges. II: Interlayer Slip of Strands
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Volume 25, Issue 8
Abstract
The capability to accurately evaluate the frictional resistance between the main cable and saddle is essential for the design and evaluation of suspension bridges. In this paper, an analytical model is developed to predict the frictional resistance between the main cable and saddle based on slipping compatibility conditions and is validated against model test data. The relative slip between adjacent strands is considered. The development process of the frictional resistance is analyzed. The development process of the total frictional resistance between the main cable and saddle can be divided into three stages: (1) the nearly linear growing stage, (2) the slow growing stage, and (3) the steady ultimate stage. Incorporating vertical frictional plates into the saddle trough increases the frictional resistance between the main cable and saddle but aggravates the unevenness of the distribution of the single strand frictional resistance.
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Acknowledgments
This study was funded by the National Natural Science Foundation of China (Grant Numbers 51778533, 51878561, and 51578455), the Fundamental Research Funds for the Central Universities (Grant Number 2682014CX078), the National Science and Technology Support Program of China (Grant Number 2011BAG07B03) and the Open Project Funds of State Key Laboratory for Health and Safety of Bridge Structures (Grant Number BHSKL18-01-KF).
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Published In
Journal of Bridge Engineering
Volume 25 • Issue 8 • August 2020
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© 2020 American Society of Civil Engineers.
History
Received: Jan 17, 2019
Accepted: Nov 14, 2019
Published online: May 21, 2020
Published in print: Aug 1, 2020
Discussion open until: Oct 21, 2020
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