装配式箱涵结构整体可靠度研究  

作　　者：王涛 刘子傲 乔鹏飞 李佳其 王瑞斌 冯飞鹏 

机构地区：[1]中铁七局集团第三工程有限公司,陕西西安710032 [2]东北大学资源与土木工程学院,辽宁沈阳110819

出　　处：《科技创新与应用》2020年第13期58-60,共3页Technology Innovation and Application

摘　　要：装配式箱涵各预制构件之间的连接至关重要,其接缝处是尤为薄弱的部位,这对结构的可靠性分析提出了较高的要求。文章结合工程实例,首先采用验算点法进行装配式箱涵顶板、侧墙和底板以及铰缝处的构件可靠度分析,然后与蒙特卡洛法进行对比,结果表明:两种方法得到的可靠指标相差很小,均符合规范要求。最后,考虑构件间的相关性进行了箱涵结构体系可靠度分析,计算得到的可靠指标与不考虑构件间相关性时相比结果偏小,也更偏于安全且符合实际。The connection between precast element of prefabricated box culverts is very important,and its joints are particularly weak,which places higher requirements on the reliability analysis of the structure.Based on engineering examples,the reliability analysis of the roof,side wall,floor and hinge joints of the assembled box culvert is firstly carried out by the checking point method.Then compared with Monte Carlo method,the results show that the reliability index obtained by the two methods differ little and both meet the requirements.Finally,the system reliability analysis of box culvert structure is carried out by considering the correlation among components.The calculated reliability index is smaller than that without considering the correlation between components,which is more secure and practical.

关 键 词：验算点法 装配式 箱涵 可靠度 

分 类 号：TU312.1[建筑科学—结构工程]