Design and Finite Element Analysis of Prefabricated Waffle Slabs for Electronic Chip Manufacturing Plants

WEN Lingyan; NIE Xin; LU Shijie; LIU Bowen; MENG Jiao; YUAN Siyao

doi:10.3724/j.gyjzG24090904

Volume 56 Issue 1

Jan. 2026

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WEN Lingyan, NIE Xin, LU Shijie, LIU Bowen, MENG Jiao, YUAN Siyao. Design and Finite Element Analysis of Prefabricated Waffle Slabs for Electronic Chip Manufacturing Plants[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(1): 32-40. doi: 10.3724/j.gyjzG24090904

Citation:

WEN Lingyan, NIE Xin, LU Shijie, LIU Bowen, MENG Jiao, YUAN Siyao. Design and Finite Element Analysis of Prefabricated Waffle Slabs for Electronic Chip Manufacturing Plants[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(1): 32-40. doi: 10.3724/j.gyjzG24090904

Citation:

WEN Lingyan, NIE Xin, LU Shijie, LIU Bowen, MENG Jiao, YUAN Siyao. Design and Finite Element Analysis of Prefabricated Waffle Slabs for Electronic Chip Manufacturing Plants[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(1): 32-40. doi: 10.3724/j.gyjzG24090904

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Design and Finite Element Analysis of Prefabricated Waffle Slabs for Electronic Chip Manufacturing Plants

doi: 10.3724/j.gyjzG24090904

1. China Electronics Engineering Design Institute Co., Ltd., Beijing 100142, China;
2. Department of Civil Engineering, Tsinghua University, Beijing 100084, China;
3. China Construction Third Bureau First Engineering Co., Ltd., Wuhan 430040, China

Received Date: 2024-09-09
Available Online: 2026-02-26
Publish Date: 2026-01-22

Abstract

Abstract

Based on an electronic chip factory project in Shanghai， an integrated prefabricated waffle slab system has been proposed. Using finite element modeling， the effects of joint depth and live load mass on the natural frequency， stiffness， and in-situ frequency response function of the floor slab were analyzed. The results showed that as the joint depth in the waffle slab increased， the natural frequency of the same order and the stiffness of the waffle slab decreased， while the vibration response of the floor increased. Moreover， the greater the joint depth， the more rapidly these indicators changed. When the joint depth was within 100 mm， the variations in the stiffness and peak frequency response function of the waffle slab remained within 5%， indicating the feasibility of the prefabricated concrete waffle slab system. The live load mass contributed to controlling the speed and acceleration responses of the floor but did not affect its dynamic stiffness. The formula derived from a single-degree-of-freedom system can accurately estimate the displacement， velocity， and acceleration frequency response functions of the floor structure under live loads and is recommended for practical engineering applications.
- chip plants,
- waffle slab,
- prefabricated,
- finite element method,
- frequency response function,
- dynamic stiffness

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References(12)

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