Seismic Analysis of Prefabricated Hollow Piers Connected by Grouting Sleeves

Abstract

Prefabricated piers with hollow sections can save concrete, which is one of the important ways to reduce carbon emissions. In order to study the mechanical performance of prefabricated hollow piers connected by grouting sleeves, three rectangular hollow-section bridge piers with different shear-span ratios were designed, and quasi-static loading tests were carried out to compare the failure modes of prefabricated hollow bridge piers and the influence of the overall mechanical performance. The research results show that: the existence of joints in prefabricated hollow piers will cause a certain pinch effect on its hysteretic curve; The increase of the shear-span ratio will improve the ductility and change the failure mode of the bridge pier, but the ultimate bearing capacity will decrease accordingly, and the overall stiffness of the hollow bridge pier will be significantly reduced. The problems that need to be paid attention to in different design states and the solutions are put forward. The performance of prefabricated hollow piers with grouting sleeves can meet the needs of operation and can be used as an alternative solution for prefabricated assembled viaduct piers.