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随着社会的进步和国民经济的快速发展,以及人们对公路服务水平和行车舒适性要求的不断提高,后张法预制的箱梁在我国的公路桥梁中得到了广泛地应用。箱梁不仅适应性强,能够因地制宜,而且还具有经济合理、施工方便以及简洁美观等众多优点,因此,箱梁的使用得到了人们的一致好评。本文结合工程实例从施工技术的角度讲述了箱梁预应力筋张拉、孔道压浆施工技术,并对桥面连续负弯矩管道压浆的注意事项和操作规范等进行了介绍,希望对同类工程施工提供施工参考和经验借鉴。
With the progress of society and the rapid development of the national economy, as well as the continuous improvement of people’s demands for road service and driving comfort, post-tensioned prefabricated box girders have been widely used in our country’s highway bridges. Box girder is not only adaptable, can be adapted to local conditions, but also has many advantages, such as economic and rational, convenient construction and simple and beautiful appearance, therefore, the use of box girder has been people’s praise. Based on the engineering example, this paper introduces the construction technology of box girder prestressing tendons, grouting construction technology and introduces the precautions and operation specifications of continuous negative bending moment pipeline deck decks. Engineering construction to provide reference and experience in construction.