Floor Vibration Serviceability in a Multistory Factory Building

Pan, Tso–Chien; Middleton, Christopher; Tan, Su Chern; Yang, Guichang

doi:10.1061/(asce)cf.1943-5509.0000688

Cited by 15 publications

(11 citation statements)

References 10 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Factory buildings and large span structures often house high-power equipment, which can generate strong vibrations that can affect the integrity of the surrounding structures. If the structural vibration exceeds a certain level, it will negatively affect the function and performance of other devices in the building [1,2]. e vibration can also lead to a reduced level of comfort for the working personnel [3,4].…”

Section: Introductionmentioning

confidence: 99%

Development of a Frequency-Adjustable Tuned Mass Damper (FATMD) for Structural Vibration Control

Wang

Huang

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

The tuned mass damper (TMD) can be applied to suppress earthquake, wind, and pedestrian- and machine-induced vibration in factory buildings or large span structures. However, the traditional TMD with a fixed frequency will not be able to perform effectively against the frequency variations in multiple hazards. This paper proposed a frequency-adjustable tuned mass damper (FATMD) to solve this limitation of current TMD. The FATMD presented in this paper is composed of a simple assembly consisting of a supported beam with a mass, in which the frequency of the FATMD is changed by adjusting the span of the beam. The kinematic equation of a single degree of freedom (SDOF) structure installed with an FATMD is established to analyze the effect of the damping ratio, mass ratio, and stiffness on the vibration damping. The fundamental frequency of the FATMD at different spans is verified by simulation and experiments. Forced vibration experiments with different excitation frequencies are also conducted to verify the performance of the FATMD. The results show that the proposed FATMD can effectively suppress the vertical vibration of structures at different excitation frequencies, including frequencies at a range higher than what a traditional TMD may not be able to suppress. Additionally, the proposed FATMD is applied to a long-span pedestrian bridge which vibrates frequently due to the walking of pedestrians, the running of escalators, and earthquakes. The numerical results indicate that the FATMD can effectively reduce the vertical vibration of the pedestrian bridge under the excitations of pedestrians, escalators, and earthquakes.

show abstract

Section: Introductionmentioning

confidence: 99%

Development of a Frequency-Adjustable Tuned Mass Damper (FATMD) for Structural Vibration Control

Wang

Huang

et al. 2020

Shock and Vibration

View full text Add to dashboard Cite

show abstract

“…This approach has been utilized in evaluating the vibration performance of various structures [7][8][9][10]. Lee et al [7] analytically performed a microvibration performance assessment of a thin-film transistor liquid crystal display (TFT-LCD) factory, constructed of a flat RC slab supported by longspan steel mega trusses, where vibration was generated by automated guided vehicles.…”

Section: Introductionmentioning

confidence: 99%

“…Pan et al [8] conducted vibration performance assessments through analysis and experiments using humans walking as the vibration source, for a biotechnology laboratory with floors supported by long-span RC beams. Brownjohn et al [9] performed experimental and analytical modal analysis and in-operation measurements for the evaluation of floor vibration serviceability in a factory building. Brownjohn et al [9] advises that the vibrationsensitive products are manufactured on the floor with smaller spans is preferable.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Experimental Evaluation for the Microvibration Performance of a Segmented PC Method Based High Technology Industrial Facility Using 1/2 Scale Test Models

Kim¹,

Choi

2017

Shock and Vibration

View full text Add to dashboard Cite

The precast concrete (PC) method used in the construction process of high technology industrial facilities is limited when applied to those with greater span lengths, due to the transport length restriction (maximum length of 15∼16 m in Korea) set by traffic laws. In order to resolve this, this study introduces a structural system with a segmented PC system, and a 1/2 scale model with a width of 9000 mm (hereafter Segmented Model) is manufactured to evaluate vibration performance. Since a real vibrational environment cannot be reproduced for vibration testing using a scale model, a comparative analysis of their relative performances is conducted in this study. For this purpose, a 1/2 scale model with a width of 7200 mm (hereafter Nonsegmented Model) of a high technology industrial facility is additionally prepared using the conventional PC method. By applying the same experiment method for both scale models and comparing the results, the relative vibration performance of the Segmented Model is observed. Through impact testing, the natural frequencies of the two scale models are compared. Also, in order to analyze the estimated response induced by the equipment, the vibration responses due to the exciter are compared. The experimental results show that the Segmented Model exhibits similar or superior performances when compared to the Nonsegmented Model.

show abstract

“…The criteria take the form of a set of one-third-octave band velocity spectra labeled vibration criterion curves VC-A through VC-E and are known as the BBN Criterion Curves [4]. These curves have been used for evaluations of microvibration performance of various structures within high technology facilities [7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Experimental and Analytical Investigation Based on 1/2 Scale Model for a Cleanroom Unit Module Consisting of Steel Section and Reinforced Concrete

Kim

Choi

2016

Advances in Materials Science and Engineering

View full text Add to dashboard Cite

The rapid advances in high tech industries and the increased demand for high precision and reliability of their production environments call for larger structures and higher vertical vibration performance for high technology facilities. Therefore, there is an urgent demand for structural design and vertical vibration evaluation technologies for high tech facility structures. For estimating the microvibration performance for a cleanroom unit module in high technology facilities, this study performs the scale modeling experiment and analytical validation. First, the 1/2 scale model (width 7500 mm, depth 7500 mm, and height 7250 mm) for a cleanroom unit module is manufactured based on a mass-based similitude law which does not require additional mass. The dynamic test using an impact hammer is conducted to obtain the transfer function of 1/2 scale model. The transfer function derived from the test is compared with the analytical results to calibrate the analytical model. It is found that, unlike for static analyses, the stiffness of embedded reinforcement must be considered for estimating microvibration responses. Finally, the similitude law used in this study is validated by comparing the full-scale analytical model and 1/2 scale analytical model for a cleanroom unit module.

show abstract

Floor Vibration Serviceability in a Multistory Factory Building

Cited by 15 publications

References 10 publications

Development of a Frequency-Adjustable Tuned Mass Damper (FATMD) for Structural Vibration Control

Development of a Frequency-Adjustable Tuned Mass Damper (FATMD) for Structural Vibration Control

Experimental Evaluation for the Microvibration Performance of a Segmented PC Method Based High Technology Industrial Facility Using 1/2 Scale Test Models

Experimental and Analytical Investigation Based on 1/2 Scale Model for a Cleanroom Unit Module Consisting of Steel Section and Reinforced Concrete

Contact Info

Product

Resources

About