TY - JOUR

T1 - Experimental Study on Seismic Behavior of Cluster-Reinforced Precast Concrete Columns with Grouting-Anchor Connections

AU - Xu, L.H.

AU - Wang, Q.L.

AU - Yu, M.

AU - Chi, Y.

AU - Yang, B.

AU - Liu, M.

AU - Ye, J.Q.

N1 - Electronic version of an article published as Journal of Earthquake and Tsunami, Volume, Issue, Year, Pages] 10.1142/S1793431119400074 © copyright World Scientific Publishing Company https://www.worldscientific.com/worldscinet/jet

PY - 2019/8/1

Y1 - 2019/8/1

N2 - The prefabricated residential buildings have become one of the most dominating construction methods in the modern construction industry. The seismic behavior of prefabricated components is crucial in the limit state design of the precast structure. This paper investigates the seismic behavior of a new type precast concrete column that has clustered steel reinforcement with grouting connection. Quasi-static tests are carried out on three cast-in-situ columns and seven precast columns. Axial compression ratio, lap length and lap space are the main variables considered. The failure process, hysteresis curve, skeleton curve, stiffness degradation, displacement ductility and energy dissipation are elaborated. The experimental results show that the precast columns with cluster reinforcement have similar seismic behavior to the cast-in-situ columns. Reducing the axial pressure can improve the ductility and energy consumption performance of the cluster-reinforced columns and exert its ductility to improve its seismic performance. During the assembly, a moderate increase in lap length can improve the seismic behavior of precast columns, whereas the lap space has an insignificant effect on the seismic behavior which indicates that the lap space is not an important factor during construction. The research outcome can serve as a reference for further development and application of precast structures.

AB - The prefabricated residential buildings have become one of the most dominating construction methods in the modern construction industry. The seismic behavior of prefabricated components is crucial in the limit state design of the precast structure. This paper investigates the seismic behavior of a new type precast concrete column that has clustered steel reinforcement with grouting connection. Quasi-static tests are carried out on three cast-in-situ columns and seven precast columns. Axial compression ratio, lap length and lap space are the main variables considered. The failure process, hysteresis curve, skeleton curve, stiffness degradation, displacement ductility and energy dissipation are elaborated. The experimental results show that the precast columns with cluster reinforcement have similar seismic behavior to the cast-in-situ columns. Reducing the axial pressure can improve the ductility and energy consumption performance of the cluster-reinforced columns and exert its ductility to improve its seismic performance. During the assembly, a moderate increase in lap length can improve the seismic behavior of precast columns, whereas the lap space has an insignificant effect on the seismic behavior which indicates that the lap space is not an important factor during construction. The research outcome can serve as a reference for further development and application of precast structures.

KW - Precast concrete column

KW - cluster reinforcement

KW - grouting–anchor connection

KW - seismic behavior

KW - quasi-static test

U2 - 10.1142/S1793431119400074

DO - 10.1142/S1793431119400074

M3 - Journal article

VL - 13

JO - Journal of Earthquake and Tsunami

JF - Journal of Earthquake and Tsunami

SN - 1793-7116

IS - 03n04

M1 - 1940007

ER -