contributor author | Wei Fan | |
contributor author | Bin Liu | |
contributor author | Gary R. Consolazio | |
date accessioned | 2019-09-18T10:39:24Z | |
date available | 2019-09-18T10:39:24Z | |
date issued | 2019 | |
identifier other | %28ASCE%29ST.1943-541X.0002324.pdf | |
identifier uri | http://yetl.yabesh.ir/yetl1/handle/yetl/4259887 | |
description abstract | RC bridge columns that are at risk for collision loading must be designed for lateral impact load. Because bridge columns must also support axial loads, evaluating the residual axial capacity and collapse risk of impact-damaged columns is important. This study examined axial performance characteristics of RC columns using compression after impact (CAI) testing of twelve circular columns. As residual deformations caused by lateral impact loading increased, residual axial strengths were found to decrease. Additionally, damage modes induced by impact loading were found to have an obvious influence on residual axial capacity. Shear-dominated impact damage was observed to result in greater reduction of axial capacity than did flexure-dominated damage. Because the maximum load imposed during a collision is usually unknown, an assessment method based on the postimpact state (deformation and damage mode) is proposed and was demonstrated to be capable of predicting postimpact residual axial capacity. The effects of reinforcement ratio and axial load ratio on postimpact capacity were parametrically investigated, and an empirical formula derived from the results was developed for estimating residual strengths. | |
publisher | American Society of Civil Engineers | |
title | Residual Capacity of Axially Loaded Circular RC Columns after Lateral Low-Velocity Impact | |
type | Journal Paper | |
journal volume | 145 | |
journal issue | 6 | |
journal title | Journal of Structural Engineering | |
identifier doi | 10.1061/(ASCE)ST.1943-541X.0002324 | |
page | 04019039 | |
tree | Journal of Structural Engineering:;2019:;Volume ( 145 ):;issue: 006 | |
contenttype | Fulltext | |