桥梁装配式盖梁干接安装关键施工工艺研究与应用

Research and Application of Key Construction Techniques for Dry-joined Installation of Prefabricated Bent Cap in Bridges

摘要:

针对城市快速路中开始大量运用的干接盖梁施工，结合实际工程案例，研究进行了临时锚固体系的设计与分析，通过对干接盖梁可能的转动点进行计算并结合现场试验结果，提出了一种可行的张拉控制力的计算和选取的方法，对类似的施工工艺提供了一种设计与计算的思路和依据。研究还总结了干接盖梁的预制、临时预应力安装等相关主要施工工艺，为今后同类型的干接盖梁的施工提供了参考。

Abstract:

Aiming at the dry-joined bent cap construction which begun to be widely used in urban expressways, combined with the practical engineering cases, the design and analysis on the temporary anchoring system are studied. By calculating the possible turning point of the dry-joined bent cap and combined with the field test results, a feasible calculation and selection method of tension control force is proposed. The design and calculation idea and basis are proposed for similar construction technology. The main construction technologies related to the prefabrication of dry-joined bent cap and the installation of temporary prestress are summarized, which provides a reference for the construction of the similar dry-joined bent caps in the future.