Fiber-reinforced prestressed reinforced concrete sleeper

US11136724B2 · kind B2 · utility

Assignees

• CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LIMITED RAILWAY ENGINEERING RESEARCH INSTITUTE · CN
• CHINA ACADEMY OF RAILWAY SCIENCES CORPORATION LTD. · CN
• BEIJING TIEKE SHOUGANG TRACK TECHNOLOGY Co., LTD · CN

Inventors

• Yangsheng Ye · Putuo District, CN
• Ruilin You · Beijing, CN
• Jia Fan · Wilmington, US
• Weibin Liu · Xibeiwang, CN
• Xianggang Du · Beijing, CN
• Zhenyu Tan · Atlanta, US
• Zhanguo Ma · Xuzhou, CN
• Liangshan Xu · Beijing, CN

Key dates

• Filing date: Jun 11, 2018
• Grant date: Oct 5, 2021
• Expiry date: Jun 11, 2038

Classification

• Technology area (CPC E): Fixed Constructions
• CPC primary: E01B2204/10
• WIPO field: Other special machines
• WIPO sector: Mechanical engineering

Abstract

A fiber-reinforced prestressed reinforced concrete sleeper is integrally cast and includes a sleeper body and two rail bearing regions. A rail clamping base is arranged on a surface of the each rail bearing region. The two rail bearing regions are located under rails on both sides of the sleeper and the two rail bearing regions are located above the sleeper body. A reinforcing fiber is mixed into the two rail bearing regions only, and a reinforcing rib is arranged in the sleeper body. The reinforcing fiber is concentrated in a main stress region under the surface of the rail bearing regions. The reinforcing fiber arranged in a region with a large stress is more than the reinforcing fiber arranged in a region with a small stress.