Skip to main content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

EXPERIMENTAL STUDY OF RC ASSEMBLIES UNDER A COLUMN REMOVAL SCENARIO

Published

Author(s)

Hai S. Lew, Yihai Bao, Santiago Pujol, Mete Sozen

Abstract

This paper presents an experimental study of two full-scale reinforced concrete (R/C) beam-column assemblies under a column removal scenario. The assemblies represent portions of the exterior moment-resisting frames of two ten-story R/C frame buildings, one designed for Seismic Design Category C (SDC C) and the other for SDC D. Intermediate moment frames (IMFs) and special moment frames (SMFs) are used in the SDC C and SDC D designs, respectively. The assemblies were subjected to monotonically increasing vertical displacement of the center column. With increased vertical displacement, three stages of structural behavior are evident. The test results show that the ultimate loads under the column removal scenario are primarily resisted through catenary action. The tensile force increase is limited by the fracture strength of the tensile reinforcement of the beams. The rotational capacities under monotonic column displacement are seven to eight times as large as those in ASCE 41, which are based on seismic test data.
Citation
Aci Structural Journal

Keywords

buildings, catenary action, concrete structures, disproportionate collapse, full scale tests, progressive collapse, joint rotation capacity
Created July 1, 2014, Updated February 19, 2017