Journal of South China University of Technology (Natural Science Edition) ›› 2011, Vol. 39 ›› Issue (9): 88-92.doi: 10.3969/j.issn.1000-565X.2011.09.015

• Mechanics • Previous Articles     Next Articles

Thermal Fatigue Performance of Steel Fiber-Polymer Reinforced High-Strength Concrete

Zheng Shun-chao  Huang Pei-yan  Guo Xin-yan  Zheng Xiao-hong  Zhou Hao   

  1. School of Civil Engineering and Transportation,South China University of Technology,Guangzhou 510640,Guangdong,China
  • Received:2011-02-21 Revised:2011-04-17 Online:2011-09-25 Published:2011-08-02
  • Contact: 黄培彦(1952-) ，男，教授，博士生导师，主要从事疲劳与断裂力学、桥梁评估与加固技术研究． E-mail: pyhuang@scut．edu．cn E-mail:zhengshunchao@gdcd.gov.cn
  • About author:郑顺潮(1964-) ，男，博士生，高级工程师，主要从事桥梁力学、桥梁评估与加固技术研究．
  • Supported by:

    国家自然科学基金资助项目( 51078145) ; 广东省自然科学基金重点资助项目( 9251064101000016) ; 广东省交通科技计划项目( 2007-16)

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Abstract:

A novel fiber concrete,namely,steel fiber-polymer reinforced high-strength concrete ( SPHC) ,is used in long-span bridge structures. In order to reveal its thermal fatigue performance and durability,the corresponding experiments and theoretical analyses of the real bridge were conducted based on the climatic conditions in Guangdong province,China. Then,at the room temperature,the thermal fatigue performance of SPHC was compared with that of C60 concrete which has static mechanical properties similar to SPHC. The results show that the proposed calculation formula can effectively describe the fatigue life and fatigue limit of SPHC considering service environment,and that,as compared with C60 concrete,the fatigue resistance of SPHC greatly improves.

Key words: steel fiber-polymer reinforced high-strength concrete, thermal fatigue, C60 concrete, bridge structure

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