论文部分内容阅读
桥梁支座是在桥跨结构与桥墩或桥台的支承处设置的传力装置,不仅要承受和传递很大的荷载,并且还应保证桥跨结构可以产生一定的变位,保证其使用功能正常和使用安全对桥梁上部结构至关重要。由于施工安装和养护等原因,沙河特大桥运营15年来伸缩缝处的定向滑板支座出现了橡胶块偏移和老化、开裂等病害,为保证桥梁安全运营必须进行更换,文章介绍了在封闭交通条件下,用并联油压千斤顶顶升上部结构更换支座施工的全过程,可以为桥梁更换支座维修处治提供参考。
The bridge support is a force transmission device arranged at the support of the bridge structure and the bridge piers or abutments. It not only needs to bear and transfer large loads, but also ensures that the bridge span structure can produce certain displacement and ensure its use function Normal and safe use of the bridge superstructure is essential. Due to construction, installation, maintenance and other reasons, the skateboard bearing at the expansion joint at the Shahe Super Bridge has experienced rubber block migration and aging, cracking and other diseases for 15 years. In order to ensure the safe operation of the bridge, the replacement must be carried out. In the paper, Under the conditions, with the parallel hydraulic jack lifting the superstructure replacement support the entire process of construction, replacement and repair for the bridge to provide treatment reference.