Pretensioning Suspender System for Performance Improvement of a Tied-Arch Bridge with PC Stiff HangersSource: Journal of Performance of Constructed Facilities:;2025:;Volume ( 039 ):;issue: 001::page 04024053-1Author:Xiaoming Wang
,
Wenjie Yang
,
Lu Deng
,
Frederic Chardin Tchuente Nko’o
,
Shengpeng Tang
,
Runhan Wu
,
Chenxi Li
,
Xiaoyu Luo
DOI: 10.1061/JPCFEV.CFENG-4755Publisher: American Society of Civil Engineers
Abstract: This paper investigates the improvement method and evaluation process for the service performance of a prestressed concrete (PC)-stiffened tied-arch bridge, of which the bearing capacity can be easily degraded due to aging of its components. A reasonable and effective active retrofitting technology is proposed, and high-strength steel strands are used as new pretensioned flexible suspenders, which are added to the original bridge structure through a new connector design. To validate the performance of the retrofitting method, an efficient and stable retrofitting evaluation process is established based on the experimental data obtained from tests carried out on a typical damaged tie-arch bridge in China. To assess the effectiveness of the retrofitting method, the values of the static performance index, dynamic performance index, and pedestrian comfort index before and after retrofitting are compared. Analysis of the results for the static performance index indicate that the retrofitting method can achieve ideal effects and effectively improve the performance of the original concrete stiff hangers, which exhibit excessive tensile stress before retrofitting. The dynamic performance demonstrates that the retrofitting method can improve the structural stiffness and effectively alleviate the excessive dynamic response of the original bridge. Furthermore, the pedestrian comfort index is improved after retrofitting. Overall, the proposed approach of this paper can effectively aid in the management and maintenance of a PC-stiffened tied-arch bridge.
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contributor author | Xiaoming Wang | |
contributor author | Wenjie Yang | |
contributor author | Lu Deng | |
contributor author | Frederic Chardin Tchuente Nko’o | |
contributor author | Shengpeng Tang | |
contributor author | Runhan Wu | |
contributor author | Chenxi Li | |
contributor author | Xiaoyu Luo | |
date accessioned | 2025-04-20T09:58:23Z | |
date available | 2025-04-20T09:58:23Z | |
date copyright | 10/23/2024 12:00:00 AM | |
date issued | 2025 | |
identifier other | JPCFEV.CFENG-4755.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4303756 | |
description abstract | This paper investigates the improvement method and evaluation process for the service performance of a prestressed concrete (PC)-stiffened tied-arch bridge, of which the bearing capacity can be easily degraded due to aging of its components. A reasonable and effective active retrofitting technology is proposed, and high-strength steel strands are used as new pretensioned flexible suspenders, which are added to the original bridge structure through a new connector design. To validate the performance of the retrofitting method, an efficient and stable retrofitting evaluation process is established based on the experimental data obtained from tests carried out on a typical damaged tie-arch bridge in China. To assess the effectiveness of the retrofitting method, the values of the static performance index, dynamic performance index, and pedestrian comfort index before and after retrofitting are compared. Analysis of the results for the static performance index indicate that the retrofitting method can achieve ideal effects and effectively improve the performance of the original concrete stiff hangers, which exhibit excessive tensile stress before retrofitting. The dynamic performance demonstrates that the retrofitting method can improve the structural stiffness and effectively alleviate the excessive dynamic response of the original bridge. Furthermore, the pedestrian comfort index is improved after retrofitting. Overall, the proposed approach of this paper can effectively aid in the management and maintenance of a PC-stiffened tied-arch bridge. | |
publisher | American Society of Civil Engineers | |
title | Pretensioning Suspender System for Performance Improvement of a Tied-Arch Bridge with PC Stiff Hangers | |
type | Journal Article | |
journal volume | 39 | |
journal issue | 1 | |
journal title | Journal of Performance of Constructed Facilities | |
identifier doi | 10.1061/JPCFEV.CFENG-4755 | |
journal fristpage | 04024053-1 | |
journal lastpage | 04024053-17 | |
page | 17 | |
tree | Journal of Performance of Constructed Facilities:;2025:;Volume ( 039 ):;issue: 001 | |
contenttype | Fulltext |