Experimental assessment of vibration serviceability of stair systems

Kim, Sang Bum; Lee, Young Hak; Scanlon, Andrew; Kim, Hee-Cheul; Hong, Kwangjoon

doi:10.1016/j.jcsr.2007.07.003

Cited by 19 publications

(7 citation statements)

References 3 publications

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“…In heel drop and walk-by tests of steel and reinforced concrete stairs, the natural frequencies of about 50 and 75 Hz were found, respectively (Kim et al (2008)). All tested staircases had response factor limits within acceptable levels.…”

Section: Dynamic Testing Of Staircasesmentioning

confidence: 99%

Human induced vibration of staircases: Measurements and analysis

Kraincanic¹,

Sparkes²

2019

Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications

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Section: Dynamic Testing Of Staircasesmentioning

confidence: 99%

Human induced vibration of staircases: Measurements and analysis

Kraincanic¹,

Sparkes²

2019

Advances in Engineering Materials, Structures and Systems: Innovations, Mechanics and Applications

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“…Similar to impact tests by instrumented hammers, free vibration tests of civil structures are difficult because of small vibration amplitudes, high structural damping, and ambient vibrations caused by unmeasured excitations (wind, traffic, etc.). Therefore, the main applications for free vibration testing have been limited primarily to preliminary tests and evaluations of single dominant (or only a few) modes, structural components, and pedestrian bridges …”

Section: Introductionmentioning

confidence: 99%

“…5 One of the simple and well-established approaches for dynamic testing is to measure the free vibration after an impulsive or forced excitation. 6 Free vibration can be encountered in heel-drop tests, [7][8][9][10][11] jump tests, 8,12,13 step relaxation tests (pullback tests), 14 and residual vibration measurements after forced vibrations, 15,16 especially after vehicle-(or train-) induced loadings. [17][18][19][20] Free vibration tests are also advantageous because of the availability of powerful and automatic pre/postprocessing techniques, including the eigensystem realization algorithm (ERA).…”

mentioning

confidence: 99%

“…Similar to impact tests by instrumented hammers, [22][23][24] free vibration tests of civil structures are difficult because of small vibration amplitudes, high structural damping, and ambient vibrations caused by unmeasured excitations (wind, traffic, etc.). Therefore, the main applications for free vibration testing have been limited primarily to preliminary tests 8,24 and evaluations of single dominant (or only a few) modes, 7,14,[17][18][19] structural components, 9,12 and pedestrian bridges. 7,10,11 A common technique to reduce the noise effect in the measurement data is to obtain multiple samples of the structural response and then average the data in an appropriate way.…”

mentioning

confidence: 99%

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Free vibration-based system identification using temporal cross-correlations

Narazaki

Hoskere

Spencer

2018

Struct Control Health Monit

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Summary Free vibration measurements provide useful information in performing modal identification of civil infrastructure. Free vibration tests have been carried out frequently, because of the simple implementation and the availability of well‐established pre/postprocessing techniques. In particular, the eigensystem realization algorithm (ERA) can be used with free vibration data to extract modal information in a straightforward and automatic manner. However, using free vibration data with the ERA is often problematic for civil infrastructure, because of the significant noise in the measurements caused primarily by small vibration amplitudes and higher structural damping. To address this problem, a method for generating ERA input is proposed that reduces the effect of noise in measured free vibration data. The proposed method is an extension of the natural excitation technique developed for stationary random vibration signals. The natural excitation technique method is adjusted to accommodate free vibration data by replacing the cross‐correlations of stationary random processes with the temporal cross‐correlations of free vibration signals. Then, an approach to reduce the noise effect in the temporal cross‐correlations is proposed based on linear superposition of the cross power spectrum densities of overlapping data segments. Finally, results of the ERA using the proposed approach are compared with the corresponding results from directly applying ERA to the free vibration data. The comparisons using numerical and field test data show that the proposed method outperforms the conventional approach, especially for the modes whose amplitudes are small in the measured free vibration signals.

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“…However, very limited studies have been done on the effect/role of staircase on the lateral stiffness or structural response of multi-storey buildings. Experimental assessment of vibration serviceability of stair systems has been performed by Kim et al (2008), involving steel stair system and RC stair system. Theoretically, staircase, which is similar to an inclined slab that is connecting slabs of adjacent storeys, may acts as a diagonal brace between floors, thus contributing to both vertical and horizontal stiffness of the structure.…”

Section: Introductionmentioning

confidence: 99%

Efficient Three-Dimensional Modelling of High-Rise Building Structures

Jameel

Islam

Khaleel

et al. 2013

Journal of Civil Engineering and Management

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A multi-storey building is habitually modelled as a frame structure which neglects the shear wall/slab openings along with the inclusion of staircases. Furthermore, the structural strength provided by shear walls and slabs is not precisely incorporated. With increasing building height, the effect of lateral loads on a high-rise structure increases substantially. Inclusion of shear walls and slabs with the frame leads to improved lateral stiffness. Besides, their openings may play imperative role in the structural behaviour of such buildings. In this study, 61 multi-storey building configurations have been modelled. Corresponding analyses are performed to cope with the influence of shear walls, slabs, wall openings, masonry walls and staircases in addition to frame modelling. The finite element approach is used in modelling and analysis. Structural responses in each elemental combination are evaluated through equivalent static and free vibration analyses. The assessment reveals that inclusion of only slab components with frame modelling contributes trivial improvement on structural performance. Conversely, the presence of shear wall slabs with frame improves the performance noticeably. Increasing wall openings decreases the structural responses. Furthermore, it is not recommended to model staircases in addition to frame-slab-shear wall modelling, unless the effect of wall openings and slab openings is adequately considered. Keywords: efficient modelling; high-rise buildings; wall opening; staircase; frame-slab-shear wall model; masonry wall. Reference to this paper should be made as follows: Jameel, M.; Islam, A. B. M. Saiful; Khaleel, M.; Amirahmad, A. 2013. Efficient three-dimensional modelling of high-rise building structures, Journal of Civil Engineering and Management 19(6): 811-822. http://dx.

show abstract

Experimental assessment of vibration serviceability of stair systems

Cited by 19 publications

References 3 publications

Human induced vibration of staircases: Measurements and analysis

Human induced vibration of staircases: Measurements and analysis

Free vibration-based system identification using temporal cross-correlations

Efficient Three-Dimensional Modelling of High-Rise Building Structures

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