摘要
为了研究公路钢筋混凝土梁抗力劣化对构件可靠性的影响,采用了一个时变荷载模型和一个多参数抗力劣化模型,研究了公路钢筋混凝土梁抗弯强度可靠性在服役期内的变化趋势,并基于一实例分析了各影响参数对可靠性的敏感性。结果表明:抗力劣化使构件可靠性下降,受拉区钢筋和车辆荷载对可靠性分析的敏感性最大。
In order to study the influence of resistance deterioration of the highway reinforced concrete beam on the member reliability, in this paper, based on a timedependent load model and a resistance deterioration model which several parameters has been considered, the change tendency in the service life of bending strength reliability about the highway reinforced concrete beam is studied, and according to an example, the sensitivity of the parameters which can influence the reliability is analyzed. The result is that resistance deterioration can make the member reliability decline, and the reinforcement in tensile region and vehicle loads are the most sensitive to the reliability analysis.
出处
《中国公路学报》
EI
CAS
CSCD
北大核心
2003年第4期50-54,共5页
China Journal of Highway and Transport
关键词
桥梁工程
钢筋混凝土梁
可靠性分析
抗力劣化
敏感性
bridge engineering
reinforced concrete beam
reliability analysis
resistance deterioration
sensitivity
