预应力后张法张拉控制技术研究

Research on Post-tensioned Prestressed Control Technology

在公路、铁路桥梁工程中,预应力技术越来越多应用于工程实践中,随着科技的发展,桥梁跨径不断增加,预应力后张法的应用提高了梁体的受力、节约了大量的普通钢筋、增加了桥梁跨径。作为预应力后张法施工,张拉控制是决定施工成败的关键,从影响后张法张拉控制的主要因素进行了分析和探讨。

At present,in highway,railway and bridge project,the prestressed technology is more and more used in engineering practice,with the development of science and technology,increasing bridge spans,the application of prestressed tensioning after improved the stress of the beam body,saving a large amount of ordinary steel,increases the bridge span.As after prestressed tensioning construction,tension control is the key to the success of the construction,this article mainly analyzed and discussed the main factors influencing the post-tensioned method.