Seismic testing and performance of precast high-strength concrete beam-column joints subjected to high axial tension

Hassane Ousalem, Hiroto Takatsu, Yuji Ishikawa, Hideki Kimura

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

High-rise buildings are subjected during severe earthquakes and strong winds to intensive large axial and lateral loads, particularly at their lower stories, where the exterior columns experience varying high axial loads. Herein, the seismic performance of two precast high-strength reinforced concrete exterior beam-column joints subjected to different varying high-axial levels is investigated while premature shear failure is generally suspected. High-grade steel bars were used for reinforcement. Splice grout-sleeves and mechanical anchors were used in the columns and beams, respectively. The strength of the concrete was 70 MPa. The maximum axial tension level in columns was 90% of the yield strength of the main bars. Under high axial tension, the tested subassemblies exhibited stable response, good damping characteristics, appropriate lateral force resistance and energy absorption capacity. They performed well within the lateral story drift angle of 3% where the successive failure modes (beam/column flexural yielding followed by joint shear failure) confirmed the appropriateness of the design equations in AIJ and ACI regulations. Furthermore, the use of mechanical anchors proved to be very effective and no sign of concrete crushing (pushing toward the exterior face of the joint) was observed within the lateral story drift angle of 2%.

Original languageEnglish
Pages (from-to)195-204
Number of pages10
JournalJournal of Advanced Concrete Technology
Volume7
Issue number2
DOIs
Publication statusPublished - 2009 Dec 1
Externally publishedYes

Fingerprint

Anchors
Concretes
Steel
Axial loads
Energy absorption
Crushing
Testing
Failure modes
Yield stress
Reinforced concrete
Earthquakes
Reinforcement
Damping

ASJC Scopus subject areas

  • Building and Construction
  • Materials Science(all)

Cite this

Seismic testing and performance of precast high-strength concrete beam-column joints subjected to high axial tension. / Ousalem, Hassane; Takatsu, Hiroto; Ishikawa, Yuji; Kimura, Hideki.

In: Journal of Advanced Concrete Technology, Vol. 7, No. 2, 01.12.2009, p. 195-204.

Research output: Contribution to journalArticle

@article{c03e4a8de22c4ad5ac403ae1284c4658,
title = "Seismic testing and performance of precast high-strength concrete beam-column joints subjected to high axial tension",
abstract = "High-rise buildings are subjected during severe earthquakes and strong winds to intensive large axial and lateral loads, particularly at their lower stories, where the exterior columns experience varying high axial loads. Herein, the seismic performance of two precast high-strength reinforced concrete exterior beam-column joints subjected to different varying high-axial levels is investigated while premature shear failure is generally suspected. High-grade steel bars were used for reinforcement. Splice grout-sleeves and mechanical anchors were used in the columns and beams, respectively. The strength of the concrete was 70 MPa. The maximum axial tension level in columns was 90{\%} of the yield strength of the main bars. Under high axial tension, the tested subassemblies exhibited stable response, good damping characteristics, appropriate lateral force resistance and energy absorption capacity. They performed well within the lateral story drift angle of 3{\%} where the successive failure modes (beam/column flexural yielding followed by joint shear failure) confirmed the appropriateness of the design equations in AIJ and ACI regulations. Furthermore, the use of mechanical anchors proved to be very effective and no sign of concrete crushing (pushing toward the exterior face of the joint) was observed within the lateral story drift angle of 2{\%}.",
author = "Hassane Ousalem and Hiroto Takatsu and Yuji Ishikawa and Hideki Kimura",
year = "2009",
month = "12",
day = "1",
doi = "10.3151/jact.7.195",
language = "English",
volume = "7",
pages = "195--204",
journal = "Journal of Advanced Concrete Technology",
issn = "1346-8014",
publisher = "Japan Concrete Institute",
number = "2",

}

TY - JOUR

T1 - Seismic testing and performance of precast high-strength concrete beam-column joints subjected to high axial tension

AU - Ousalem, Hassane

AU - Takatsu, Hiroto

AU - Ishikawa, Yuji

AU - Kimura, Hideki

PY - 2009/12/1

Y1 - 2009/12/1

N2 - High-rise buildings are subjected during severe earthquakes and strong winds to intensive large axial and lateral loads, particularly at their lower stories, where the exterior columns experience varying high axial loads. Herein, the seismic performance of two precast high-strength reinforced concrete exterior beam-column joints subjected to different varying high-axial levels is investigated while premature shear failure is generally suspected. High-grade steel bars were used for reinforcement. Splice grout-sleeves and mechanical anchors were used in the columns and beams, respectively. The strength of the concrete was 70 MPa. The maximum axial tension level in columns was 90% of the yield strength of the main bars. Under high axial tension, the tested subassemblies exhibited stable response, good damping characteristics, appropriate lateral force resistance and energy absorption capacity. They performed well within the lateral story drift angle of 3% where the successive failure modes (beam/column flexural yielding followed by joint shear failure) confirmed the appropriateness of the design equations in AIJ and ACI regulations. Furthermore, the use of mechanical anchors proved to be very effective and no sign of concrete crushing (pushing toward the exterior face of the joint) was observed within the lateral story drift angle of 2%.

AB - High-rise buildings are subjected during severe earthquakes and strong winds to intensive large axial and lateral loads, particularly at their lower stories, where the exterior columns experience varying high axial loads. Herein, the seismic performance of two precast high-strength reinforced concrete exterior beam-column joints subjected to different varying high-axial levels is investigated while premature shear failure is generally suspected. High-grade steel bars were used for reinforcement. Splice grout-sleeves and mechanical anchors were used in the columns and beams, respectively. The strength of the concrete was 70 MPa. The maximum axial tension level in columns was 90% of the yield strength of the main bars. Under high axial tension, the tested subassemblies exhibited stable response, good damping characteristics, appropriate lateral force resistance and energy absorption capacity. They performed well within the lateral story drift angle of 3% where the successive failure modes (beam/column flexural yielding followed by joint shear failure) confirmed the appropriateness of the design equations in AIJ and ACI regulations. Furthermore, the use of mechanical anchors proved to be very effective and no sign of concrete crushing (pushing toward the exterior face of the joint) was observed within the lateral story drift angle of 2%.

UR - http://www.scopus.com/inward/record.url?scp=79954504866&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=79954504866&partnerID=8YFLogxK

U2 - 10.3151/jact.7.195

DO - 10.3151/jact.7.195

M3 - Article

VL - 7

SP - 195

EP - 204

JO - Journal of Advanced Concrete Technology

JF - Journal of Advanced Concrete Technology

SN - 1346-8014

IS - 2

ER -