摘要
为了解预制桥面板加载龄期对采用结合梁和混合梁体系的大跨度斜拉桥主梁线形和应力的影响,结合南溪长江公路大桥(结合梁+混合梁体系斜拉桥),采用有限元分析软件NLBAS和对比分析法,对该桥进行了施工全过程分析,并对混凝土桥面板不同加载龄期对主梁线形和内力的影响规律做了研究,表明结合梁的桥面板放置时间为180 d是合理的。
In order to study the effect of the loading age of prefabricated deck on the linear and internal forces of the main span of the long-span cable-stayed bridge with the composite beam and the hybride beams system,combined with the Nanxi Yangtze River Highway Bridge-a cable-stayed bridge with composite/hybrid beams,using the NLBAS of a finite element analysis software and the comparative analysis method.The bridge is analyzed the whole process of construction,and the influence of the different loading age on the linear and internal forces of the concrete beam is analyzed,which shows that the deck time of the composite beam is reasonable for 180 days.
作者
张保胜
许晓建
ZHANG Bao-sheng;XU Xiao-jian(zhongzi Highway Maintenance Testing Technology Co.Ltd.,Beijing 100089,China;China Highway Engineering Consulting Group Co.,Ltd.,Beijing 100089,China)
出处
《工程建设与设计》
2021年第12期116-118,共3页
Construction & Design for Engineering
关键词
预制桥面板
加载龄期
大跨度斜拉桥
结合梁
混合梁
prefabricated deck
loading age
long-span cable-stayed bridge
composite beam
hybride beam
