谈市政桥梁预应力后张拉施工

On prestressed post-tensioning construction at municipal bridges

根据预应力施工特点,结合郑州三环路快速化工程陇海路互通立交中桥梁预应力后张法施工实践,介绍了预应力后张法施工过程及质量控制的重点,通过对预应力后张法施工张拉前、张拉及灌浆阶段的质量控制,为桥梁预应力后张法施工及质量控制提供了有益的借鉴。

According to the features of the prestressed construction, the paper combining with the prestressed post-tensioning construction practice at bridges of Longhai Road Interchange in the rapid project along Sanhuan Road in Zhengzhou, introduces the construction process and main points for the quality control of the prestressed post-tensioning construction by undertaking the quality control over the preparation stage for tensio- ning, the tensioning and the grouting stage in the prestressed post-tensioning construction, so as to provide some reference for the prestressed post- tensioning construction of bridges and their quality control.