中文核心期刊
CSCD来源期刊
中国科技核心期刊
RCCSE中国核心学术期刊
重庆交通大学学报（自然科学版）

重庆交通大学学报（自然科学版） ›› 2013, Vol. 32 ›› Issue (增1): 894-898.DOI: 10.3969/j.issn.1674-0696.2013.sup.1.39

• 桥梁结构健康检测 • 上一篇    下一篇

寿命期预应力混凝土连续梁整体性能演变研究

叶文亚1，李国平2，范立础2   

  1. 1.宁波市公路管理局，浙江宁波315041;2.同济大学桥梁工程系，上海200092
  • 收稿日期:2013-03-01 修回日期:2013-03-20 出版日期:2013-06-30 发布日期:2015-03-12
  • 作者简介:叶文亚(1974—)，女，浙江宁海人，高级工程师，博士，主要从事混凝土桥梁性能方面的研究。E-mail:763425011@qq.com.

Evolution Analysis on Global Performance of Prestressed Continuous Bridge in Lifetime

Ye Wenya1，Li Guoping2，Fan Lichu2   

  1. 1.Ningbo Highway Management Department，Ningbo 315041，Zhejiang，China; 2.Department of Bridge Engineering，Tongji University，Shanghai 200092，China
  • Received:2013-03-01 Revised:2013-03-20 Online:2013-06-30 Published:2015-03-12

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摘要： 为了研究预应力混凝土连续梁耐久性损伤后在承载能力极限状态和正常使用极限状态下的力学性能，在材 料、截面和构件的研究基础上，考虑收缩、徐变等混凝土材料的时变性，通过采用改变损伤时间和损伤量的方式对结 构整体性能演变进行综合分析，得到了实桥结构在寿命期的跨中位移演变、抗弯承载力和荷载效应相对关系演变、 控制截面混凝土应力演变及预应力筋应力值演变规律。

关键词: 预应力混凝土, 整体结构, 时变性, 寿命期, 演变

Abstract: In order to research the mechanical performance of the prestressed continuous girder after damage under the extreme condition of the carrying capability and the common use，the time-varieties of concrete，including shrinking and creeping， were taken into consideration，on the basis of material，cross-section and components． The comprehensive analysis on the global performance evolution of the structure was carried out by changing the damage time and damage amount． And the displacement evolution in the span，the relative relationship evolution between the anti-bending carrying capability and loading response，the stress evolution of the controlled cross-section and the evolution rule of the prestressed value of the actual bridge structure in lifetime are obtained．

Key words: prestressed concrete, global structure, time-variety, lifetime, evolution

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