摘要
针对预应力混凝土连续刚构桥不同施工阶段的抗力相关性和荷载相关性特征,基于随机过程模型,建立了桥梁施工期的抗力概率模型和荷载概率模型.采用自适应MC法,对实际工程进行可靠度研究.基于可靠度理论研究方法,验证了实际工程施工控制过程各项指标.研究结果对于确保预应力混凝土连续刚构桥建设的安全性和科学性,具有一定的理论价值和现实意义.
According to the resistance correlation and load correlation features in differ- ent construction stages of prestressed concrete continuous rigid frame bridge,the resist- ance probability model and load model under construction process are established, which is based on the stochastic model. Adaptive importance sampling method is used for relia- bility to analyze the actual projects. Based on the reliability theory methods, the Index parameter is verified in actual construction control process. The result has some theo- retical value and practical significance for the construction safety of prestressed concrete continuous rigid frame bridge.
出处
《交通科学与工程》
2012年第4期25-31,共7页
Journal of Transport Science and Engineering
基金
国家自然科学基金项目(50608009)
教育部新世纪优秀人才支持计划(NCET-10-0139)
交通部应用基础研究项目(2006319825070)
湖南省教育厅科技项目(06c112)
关键词
连续刚构桥
施工期时变可靠度
自适应MC法
施工控制
continuous rigid frame bridge
during the construction period of the time-va- rying reliability
adaptive MC method
construction control
