Seismic control with tensioned cables for suspended ceilings

Yosuke Nakaso, Ken'ichi Kawaguchi, Yoshiro Ogi, Shunji Oya, Yuki Ozawa, Yuya Mori

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

Ceiling collapse has been continuously reported all over the world in the case of earthquakes in particular. Compared with the damage to structural members, ceiling collapse is likely to occur on the lower seismic scale. Therefore, the prevention of ceiling collapse is urgently necessary, especially in cases where it is suspended, and is the most important matter as it is regarding life safety. Further steps could also be taken to consider business continuity and to preserve space functionality in case of disaster, as well as integrating many kinds of failure control, such as seismic reinforcement of the ceiling. However, seismic reinforcement for the back-up frames of the existing ceilings is usually very difficult. In this paper a new type of vibration control of the ceiling is proposed. The method uses parabolic arrangement of reinforcing cables and allows access from the surface below for easier installation. The seismic retrofit of an existing suspended ceiling with such method was examined as an example. Static tests, free-vibration tests and shaker tests were performed to confirm the validation of this new seismic retrofit system with an existing suspended ceiling of size 6 x 10 m before and after the reinforcement. As a result of these experiments, with the increase in the initial tension of the cables, the increase of the horizontal stiffness and the decrease of the ceiling response displacement were confirmed.

Original languageEnglish
Pages (from-to)231-238
Number of pages8
JournalJournal of the International Association for Shell and Spatial Structures
Volume56
Issue number4
Publication statusPublished - 2015 Dec 1

Fingerprint

Ceilings
Cables
Reinforcement
Structural members
Vibration control
Disasters
Earthquakes
Stiffness

Keywords

  • Cable
  • Full scale test
  • Non-structural components
  • Seismic control
  • Suspended ceiling

ASJC Scopus subject areas

  • Building and Construction
  • Civil and Structural Engineering
  • Mechanical Engineering
  • Arts and Humanities (miscellaneous)

Cite this

Seismic control with tensioned cables for suspended ceilings. / Nakaso, Yosuke; Kawaguchi, Ken'ichi; Ogi, Yoshiro; Oya, Shunji; Ozawa, Yuki; Mori, Yuya.

In: Journal of the International Association for Shell and Spatial Structures, Vol. 56, No. 4, 01.12.2015, p. 231-238.

Research output: Contribution to journalArticle

Nakaso, Yosuke ; Kawaguchi, Ken'ichi ; Ogi, Yoshiro ; Oya, Shunji ; Ozawa, Yuki ; Mori, Yuya. / Seismic control with tensioned cables for suspended ceilings. In: Journal of the International Association for Shell and Spatial Structures. 2015 ; Vol. 56, No. 4. pp. 231-238.
@article{1e341decbf77423f8ed110200d3c0039,
title = "Seismic control with tensioned cables for suspended ceilings",
abstract = "Ceiling collapse has been continuously reported all over the world in the case of earthquakes in particular. Compared with the damage to structural members, ceiling collapse is likely to occur on the lower seismic scale. Therefore, the prevention of ceiling collapse is urgently necessary, especially in cases where it is suspended, and is the most important matter as it is regarding life safety. Further steps could also be taken to consider business continuity and to preserve space functionality in case of disaster, as well as integrating many kinds of failure control, such as seismic reinforcement of the ceiling. However, seismic reinforcement for the back-up frames of the existing ceilings is usually very difficult. In this paper a new type of vibration control of the ceiling is proposed. The method uses parabolic arrangement of reinforcing cables and allows access from the surface below for easier installation. The seismic retrofit of an existing suspended ceiling with such method was examined as an example. Static tests, free-vibration tests and shaker tests were performed to confirm the validation of this new seismic retrofit system with an existing suspended ceiling of size 6 x 10 m before and after the reinforcement. As a result of these experiments, with the increase in the initial tension of the cables, the increase of the horizontal stiffness and the decrease of the ceiling response displacement were confirmed.",
keywords = "Cable, Full scale test, Non-structural components, Seismic control, Suspended ceiling",
author = "Yosuke Nakaso and Ken'ichi Kawaguchi and Yoshiro Ogi and Shunji Oya and Yuki Ozawa and Yuya Mori",
year = "2015",
month = "12",
day = "1",
language = "English",
volume = "56",
pages = "231--238",
journal = "Journal of the International Association for Shell and Spatial Structures",
issn = "1028-365X",
publisher = "Int. Association for Shell and Spatial Structures",
number = "4",

}

TY - JOUR

T1 - Seismic control with tensioned cables for suspended ceilings

AU - Nakaso, Yosuke

AU - Kawaguchi, Ken'ichi

AU - Ogi, Yoshiro

AU - Oya, Shunji

AU - Ozawa, Yuki

AU - Mori, Yuya

PY - 2015/12/1

Y1 - 2015/12/1

N2 - Ceiling collapse has been continuously reported all over the world in the case of earthquakes in particular. Compared with the damage to structural members, ceiling collapse is likely to occur on the lower seismic scale. Therefore, the prevention of ceiling collapse is urgently necessary, especially in cases where it is suspended, and is the most important matter as it is regarding life safety. Further steps could also be taken to consider business continuity and to preserve space functionality in case of disaster, as well as integrating many kinds of failure control, such as seismic reinforcement of the ceiling. However, seismic reinforcement for the back-up frames of the existing ceilings is usually very difficult. In this paper a new type of vibration control of the ceiling is proposed. The method uses parabolic arrangement of reinforcing cables and allows access from the surface below for easier installation. The seismic retrofit of an existing suspended ceiling with such method was examined as an example. Static tests, free-vibration tests and shaker tests were performed to confirm the validation of this new seismic retrofit system with an existing suspended ceiling of size 6 x 10 m before and after the reinforcement. As a result of these experiments, with the increase in the initial tension of the cables, the increase of the horizontal stiffness and the decrease of the ceiling response displacement were confirmed.

AB - Ceiling collapse has been continuously reported all over the world in the case of earthquakes in particular. Compared with the damage to structural members, ceiling collapse is likely to occur on the lower seismic scale. Therefore, the prevention of ceiling collapse is urgently necessary, especially in cases where it is suspended, and is the most important matter as it is regarding life safety. Further steps could also be taken to consider business continuity and to preserve space functionality in case of disaster, as well as integrating many kinds of failure control, such as seismic reinforcement of the ceiling. However, seismic reinforcement for the back-up frames of the existing ceilings is usually very difficult. In this paper a new type of vibration control of the ceiling is proposed. The method uses parabolic arrangement of reinforcing cables and allows access from the surface below for easier installation. The seismic retrofit of an existing suspended ceiling with such method was examined as an example. Static tests, free-vibration tests and shaker tests were performed to confirm the validation of this new seismic retrofit system with an existing suspended ceiling of size 6 x 10 m before and after the reinforcement. As a result of these experiments, with the increase in the initial tension of the cables, the increase of the horizontal stiffness and the decrease of the ceiling response displacement were confirmed.

KW - Cable

KW - Full scale test

KW - Non-structural components

KW - Seismic control

KW - Suspended ceiling

UR - http://www.scopus.com/inward/record.url?scp=84953264173&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84953264173&partnerID=8YFLogxK

M3 - Article

AN - SCOPUS:84953264173

VL - 56

SP - 231

EP - 238

JO - Journal of the International Association for Shell and Spatial Structures

JF - Journal of the International Association for Shell and Spatial Structures

SN - 1028-365X

IS - 4

ER -