ABSTRACT

This study introduced a new design of the grouted corrugated duct connection (GCDC), which improves the structure integrity, bond strength and ease of constructability. A two-phase experimental program was performed to fully understand the connection behaviour. Phase I focused on the pull-out tests of 32 specimens in two batches with various conditions. It indicates that a connection length of 30 times of the rebar diameters would guarantee the bond strength. Phase II compared the 1/3-scale precast bridge column with its cast-in-place reference via quasi-static cyclic test. It showed that the precast column behaved similarly to that of the CIP column.

摘要

本研究介绍了一种新的灌浆波纹管连接 (GCDC) 设计，它提高了结构完整性、粘合强度和易于施工性。执行了一个两阶段的实验程序以充分了解连接行为。第一阶段的重点是在不同条件下分两批对 32 个试样进行拉拔试验。这表明连接长度为钢筋直径的 30 倍将保证粘合强度。第二阶段通过准静态循环测试将 1/3 比例的预制桥柱与其现浇参考进行了比较。它表明预制柱的行为与 CIP 柱相似。