Strengthening a 20-Year-Old Post-Tensioned Concrete Box Beam with Double-Layer Prestressed Steel Wire Ropes

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成果类型：

期刊论文

作者：

Dai, Lizhao;Wang, Lei*;Deng, Ming;Wu, Binghui;Floyd, Royce W.;...

通讯作者：

Wang, Lei

作者机构：

[Wu, Binghui; Dai, Lizhao; Wang, Lei; Zhang, Jianren] Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, 960 Wanjiali Rd, Changsha 410114, Hunan, Peoples R China.

[Dai, Lizhao] Univ Lorraine, CNRS, UMR 7239, LEM3, F-57045 Metz 01, France.

[Deng, Ming] Tianjin Transportat Res Inst, 25 Dongli Rd, Tianjin 300074, Peoples R China.

[Floyd, Royce W.] Univ Oklahoma, Sch Civil Engn & Environm Sci, 202 W Boyd St, Norman, OK 73019 USA.

通讯机构：

[Wang, Lei] C

Changsha Univ Sci & Technol, Sch Civil Engn & Architecture, 960 Wanjiali Rd, Changsha 410114, Hunan, Peoples R China.

语种：

英文

关键词：

Bridge engineering;Post-tensioned concrete box beam;Strengthening;Serviceability;Prestressed steel wire ropes

期刊：

Journal of Bridge Engineering

ISSN：

1084-0702

年：

2018

卷：

期：

页码：

05018009-null

DOI：

10.1061/(ASCE)BE.1943-5592.0001301

基金类别：

National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [51678069, 51708477]; State Key Development Program for Basic Research of ChinaState Key Development Program for Basic Research of China [2015CB057705]

机构署名：

本校为第一且通讯机构

摘要：

Overloading, corrosion, and material aging deteriorate the structural performance of prestressed concrete (PC) bridges. Strengthening techniques are needed to improve the serviceability and extend the life of these deteriorating bridges. This study examined a strengthening technique with double-layer prestressed steel wire ropes (PSWRs) to enhance the serviceability of an existing post-tensioned concrete box beam for the first time. The tested box beam was removed from a demolished 20-year-old bridge. The service-level behavior of the beam, before and after strengthening, was evaluated using f...

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