公路桥梁拓宽拼接设计关键问题分析

Analysis of Key Problems in Widening and Splicing Design of Highway Bridges

随着我国经济的飞速发展,诸多早期修建的公路桥梁已无法满足现代交通发展的需求,拓宽既有公路桥梁成为扩大交通流量的重要手段。论文对公路桥梁拓宽拼接设计的几个关键问题,如拓宽拼接方案、混凝土收缩徐变、新旧桥基础沉降差展开讨论,并分别给出了相应的技术策略,以期能为公路桥梁拓宽拼接设计提供指导。

With the rapid development of China’s economy, many early highway bridges can not meet the needs of modern traffic development. Widening existing highway bridges has become an important means to expand traffic flow. This paper discusses several key problems in the widening and splicing design of highway bridges, such as the widening and splicing scheme, concrete shrinkage and creep,and the foundation settlement difference between old and new bridges, and gives the corresponding technical strategies, in order to provide guidance for the widening and splicing design of highway bridges.