Experimental Study on the Seismic Performance of Improved Grouted Corrugated Duct Connection (GCDC) Design for Precast Concrete Bridge Column
Zhiqiang Wang, Chengjun Wu, Tiantian Li, Wei Xiao, Hongyi Wei, Hongya Qu
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.
Topics & Concepts
Precast concreteStructural engineeringConstructabilityRebarColumn (typography)Connection (principal bundle)Duct (anatomy)EngineeringMaterials scienceMedicinePathologyStructural Behavior of Reinforced ConcreteGeotechnical Engineering and Underground StructuresConcrete Corrosion and Durability