Title

Seismic Rehabilitation of Slab-Column Connections

Document Type

Article

Publication Date

3-1-2010

Publication Title

ACI Structural Journal

Volume

107

Issue

2

First page number:

237

Last page number:

247

Abstract

The primary focus of the study reported in this paper is seismic rehabilitation of slab-column connections damaged under the application of lateral displacement excursions. Seven 2/3-scale interior slab-column connections were tested to quantify the effects of earthquake damage and the effectiveness of various rehabilitation techniques on repairing seismic-damaged slab-column connections and improving their two-way shear strength. Three alternatives for repairing seismic-damaged slab-column connections were experimentally evaluated: 1) installation of external carbon fiber-reinforced polymer (CFRP) stirrups; 2) application of well-anchored CFRP sheets on the tension side of the slab; and 3) installation of steel collars on the column under the slab. All techniques provided a means for repairing seismic-damaged connections and strengthening flat plate structures with inadequate two-way shear capacity. In addition, the installation of the steel collars prevented punching shear failure under the application of simulated seismic displacements and increased the lateral load capacity of nonductile slab-column connections.

Keywords

Anchors; Buildings; Buildings--Earthquake effects; Carbon fiber-reinforced polymer sheets; Carbon fiber-reinforced polymer stirrups; Earthquake damage; Earthquake engineering; Earthquake resistant design; Earthquakes; Moment transfer; Repair; Seismic rehabilitation; Shear reinforcement; Shear strength of soils; Slab-column connections; Steel collars

Disciplines

Civil and Environmental Engineering | Engineering | Geophysics and Seismology | Structural Engineering

Language

English

Permissions

Use Find in Your Library, contact the author, or interlibrary loan to garner a copy of the item. Publisher policy does not allow archiving the final published version. If a post-print (author's peer-reviewed manuscript) is allowed and available, or publisher policy changes, the item will be deposited.

Identifier

DOI: 10.14359/51663540

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