详情

原文传递 Cyclic Response of Precast, Hollow Bridge Columns with Postpour Section and Socket Connection

题名：	Cyclic Response of Precast, Hollow Bridge Columns with Postpour Section and Socket Connection
正文语种：	eng
作者：	Jin, Zhibin;Chen, Ke;Pei, Shiling
作者单位：	Southwest Jiaotong Univ Dept Bridge Engn Chengdu 610031 Peoples R China;Southwest Jiaotong Univ Dept Bridge Engn Chengdu 610031 Peoples R China;Colorado Sch Mines Dept Civil & Environm Engn Golden CO 80401 USA
关键词：	Hollow bridge column;Socket connection;High-strength concrete;Precast concrete;Seismic performance;Finite-element method
摘要：	Accelerated bridge construction (ABC) has been used extensively to achieve rapid construction, to reduce traffic congestion and environmental impacts, and to ensure reliable quality control. Precast columns are typically precast with a solid section and then inserted into a socket foundation that is deeper than the maximum dimensions of the column section. To reduce the weight of the precast column and foundation for easy transportation and assembly, an alternative solution was proposed that uses a hollow section column with high-strength concrete and a foundation with a shallow socket. After the column was erected, postpour concrete (PPC) was then poured into the hollow column to a certain depth to strengthen the shear capacity in the plastic hinge region. Two precast columns with different depths of the PPC were investigated experimentally by cyclic loading test and were compared with a cast-in-place (CIP) reference column. The cyclic loading test results showed that the precast, hollow, high-strength concrete column with socket connection exhibited emulative seismic performance of the CIP reference. A deeper PPC section shows to improve the energy-dissipating capacity of the precast column. The effect of the PPC depth on the precast column and footing was investigated both experimentally and numerically.
出版年：	2022
期刊名称：	Journal of structural engineering
卷：	148
期：	1
页码：	06021005.1-06021005.14