超大吨位预制拼装盖梁纵向分片设计与分析

Design and Analysis on Longitudinal Segments of Super-large Tonnage Prefabricated Bent Cap

摘要:

超大吨位盖梁的预制拼装方案是桥梁下部结构的关键问题。对常用的预制拼装盖梁的设计方案进行比较分析，提出了纵向分片的设计方案。通过总体计算、局部分析和缩尺模型试验等手段，对设计方案进行了分析和验证，确认方案合理、可行。分析结果表明：不仅可用于双柱大悬臂盖梁，还能以用于门架墩盖梁，具有较强的借鉴和推广意义。

Abstract:

The prefabrication and assembly scheme of super-large tonnage bent cap is the key problem of the bridge substructure. The common design schemes of the prefabricated bent cap are compared and analyzed to propose the design scheme of longitudinal segments. Through the means of overall calculation, local analysis and scaling model test, the design scheme is analyzed and verified to obtain the reasonable and feasible conclusion of the design scheme. The design scheme can be used not only for double-column large-cantilever bent cap, but also for gantry pier bent cap.