A study on seismic capacity of overhead transportation systems in a high-tech fab

George C. Yao; W. J. Chou; J. C. Wang; W. J. Lin; C. L. Tsai

doi:10.4231/D3J09W510

A study on seismic capacity of overhead transportation systems in a high-tech fab

George C. Yao, W. J. Chou, J. C. Wang, W. J. Lin, C. L. Tsai

Department of Architecture

Research output: Contribution to conference › Paper › peer-review

Abstract

This study investigates the seismic capacity of the OHS (Overhead System), a transport equipment system in the cleanroom of high-tech factories. By using full-scale static cyclic loading tests, the fracture strength and failure modes at different stages of lateral displacement could be observed. The retrofit program proposed for the OHS not only reduced the problem of the loosened connection points, but also efficiently increased system strength to the designed bracing strength. Structural analysis software SAP2000 was used to build a simulated numerical model, and nonlinear static pushover analysis was performed. We then compared the analysis results to those of the full-scale experiment to understand the internal force distribution. Finally, the computer model analysis quantified system retrofit proposals - effectively enhancing system strength with the least number of members added.

Original language	English
DOIs	https://doi.org/10.4231/D3J09W510
Publication status	Published - 2014 Jan 1
Event	10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering, NCEE 2014 - Anchorage, United States Duration: 2014 Jul 21 → 2014 Jul 25

Other

Other	10th U.S. National Conference on Earthquake Engineering: Frontiers of Earthquake Engineering, NCEE 2014
Country/Territory	United States
City	Anchorage
Period	14-07-21 → 14-07-25

All Science Journal Classification (ASJC) codes

Geotechnical Engineering and Engineering Geology

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10.4231/D3J09W510

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title = "A study on seismic capacity of overhead transportation systems in a high-tech fab",

abstract = "This study investigates the seismic capacity of the OHS (Overhead System), a transport equipment system in the cleanroom of high-tech factories. By using full-scale static cyclic loading tests, the fracture strength and failure modes at different stages of lateral displacement could be observed. The retrofit program proposed for the OHS not only reduced the problem of the loosened connection points, but also efficiently increased system strength to the designed bracing strength. Structural analysis software SAP2000 was used to build a simulated numerical model, and nonlinear static pushover analysis was performed. We then compared the analysis results to those of the full-scale experiment to understand the internal force distribution. Finally, the computer model analysis quantified system retrofit proposals - effectively enhancing system strength with the least number of members added.",

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doi = "10.4231/D3J09W510",

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AU - Yao, George C.

AU - Chou, W. J.

AU - Wang, J. C.

AU - Lin, W. J.

AU - Tsai, C. L.

PY - 2014/1/1

Y1 - 2014/1/1

N2 - This study investigates the seismic capacity of the OHS (Overhead System), a transport equipment system in the cleanroom of high-tech factories. By using full-scale static cyclic loading tests, the fracture strength and failure modes at different stages of lateral displacement could be observed. The retrofit program proposed for the OHS not only reduced the problem of the loosened connection points, but also efficiently increased system strength to the designed bracing strength. Structural analysis software SAP2000 was used to build a simulated numerical model, and nonlinear static pushover analysis was performed. We then compared the analysis results to those of the full-scale experiment to understand the internal force distribution. Finally, the computer model analysis quantified system retrofit proposals - effectively enhancing system strength with the least number of members added.

AB - This study investigates the seismic capacity of the OHS (Overhead System), a transport equipment system in the cleanroom of high-tech factories. By using full-scale static cyclic loading tests, the fracture strength and failure modes at different stages of lateral displacement could be observed. The retrofit program proposed for the OHS not only reduced the problem of the loosened connection points, but also efficiently increased system strength to the designed bracing strength. Structural analysis software SAP2000 was used to build a simulated numerical model, and nonlinear static pushover analysis was performed. We then compared the analysis results to those of the full-scale experiment to understand the internal force distribution. Finally, the computer model analysis quantified system retrofit proposals - effectively enhancing system strength with the least number of members added.

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A study on seismic capacity of overhead transportation systems in a high-tech fab

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