摘要
对现阶段体外预应力技术在桥梁工程领域的研究现状进行了总结,并在总结分析的基础上,提出了体外预应力技术研究目前尚需完善的研究领域和方向,包括体外预应力筋应力增量取值、动力特性研究、试验数据收集、设计理论研究、极限强度综合分析系统开发等,为体外预应力技术的进一步研究提供了一定的参考依据。
This paper presents the state-of-the-art of externally prestressed techniques that have been used in the bridge engineering.And based on the summary and analysis of the cunrent R＆D of the externally prestressing techniques, it mainly discusses some aspects of external prestressing which have not been dealt with successfially, including calculating the changing of stress in externally prestressed tendons, studying vibration characteristics of externally prestressed concrete structures, enhancing experimental data, studying the desig~ theories, and developing the ultimate strength analysis program for externally prestressed structures based on the finite element methed. All these presented and discussed here can offer some significant reference information for further researches of the external prestressing technology.
出处
《公路交通科技》
CAS
CSCD
北大核心
2006年第2期94-97,101,共5页
Journal of Highway and Transportation Research and Development
关键词
体外预应力
极限强度
应力增量
承载力
External prestressing
Ultimate strength
Stress growth
load-carrying capacity
