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Comparative Study of Seismic Isolated and Non‐Isolated PECs With Bottom Steel Frames Through Shaking Table Tests.

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Bibliographic Details
Title:	Comparative Study of Seismic Isolated and Non‐Isolated PECs With Bottom Steel Frames Through Shaking Table Tests.
Authors:	Feng, Yulong¹ (AUTHOR), Wang, Tonglong¹ (AUTHOR), Jiang, Qing¹ (AUTHOR) jiangq@hfut.edu.cn, Chong, Xun¹ (AUTHOR), Zeng, Tianshu² (AUTHOR), Zeng, Zhihao¹ (AUTHOR), Yu, Fei¹ (AUTHOR)
Source:	Structural Design of Tall & Special Buildings. 12/10/2025, Vol. 34 Issue 17, p1-18. 18p.
Subjects:	Base isolation system, Rubber bearings, Shaking table tests, Steel framing, Disaster resilience, Electronic equipment enclosures, Electric substations
Abstract:	A prefabricated equipment cabin (PEC) with a bottom steel frame is used in actual modular cabin‐type substations for equipment routing and maintenance. In this paper, the installation of lead‐core rubber bearings between the PEC and the frame is proposed to improve the seismic performance and resilience of the PEC. Two structures with bearings and without bearings, that is, a seismic non‐isolated structure and a seismic isolated structure, respectively, were designed and fabricated. Shaking table tests were conducted on the seismic isolated structure with a weak equipment–cabin connection and on two structures with an enhanced equipment–cabin connection in sequence. The test results show that the proposed isolation method can effectively reduce the seismic response of the PEC, including the acceleration and strain of the prefabricated cabin and the acceleration and displacement of the equipment. The proposed enhanced equipment–cabin connection can reduce the acceleration and displacement of the equipment significantly while having a nonsignificant effect on the acceleration and strain of the prefabricated cabin. This study is beneficial for the application of this PEC and its modular substation in earthquake areas. [ABSTRACT FROM AUTHOR]
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Database:	Engineering Source

Description
Abstract:	A prefabricated equipment cabin (PEC) with a bottom steel frame is used in actual modular cabin‐type substations for equipment routing and maintenance. In this paper, the installation of lead‐core rubber bearings between the PEC and the frame is proposed to improve the seismic performance and resilience of the PEC. Two structures with bearings and without bearings, that is, a seismic non‐isolated structure and a seismic isolated structure, respectively, were designed and fabricated. Shaking table tests were conducted on the seismic isolated structure with a weak equipment–cabin connection and on two structures with an enhanced equipment–cabin connection in sequence. The test results show that the proposed isolation method can effectively reduce the seismic response of the PEC, including the acceleration and strain of the prefabricated cabin and the acceleration and displacement of the equipment. The proposed enhanced equipment–cabin connection can reduce the acceleration and displacement of the equipment significantly while having a nonsignificant effect on the acceleration and strain of the prefabricated cabin. This study is beneficial for the application of this PEC and its modular substation in earthquake areas. [ABSTRACT FROM AUTHOR]
ISSN:	15417794
DOI:	10.1002/tal.70097