Evaluation of Vibration Detection Using Smartphones in a Two-Story Masonry-Infilled RC Frame Building

Kang, Jae‐Do; Baek, Eun-Rim; Park, Sungho

doi:10.3390/buildings13041069

Cited by 2 publications

(1 citation statement)

References 40 publications

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“…In order to satisfy all these criteria, it is necessary to have reliable data on the basis of which it is possible to define the characteristics of the materials, the real intensities of the actions, the state of the structure and other influences during the exploitation of the structure as accurately as possible. Monitoring the state of old reinforced concrete (RC) buildings, especially the ones subject to earthquakes, is a huge challenge for researchers [ 18 , 19 , 20 ].…”

Section: Introductionmentioning

confidence: 99%

Two-Dimensional Damage Localization Using a Piezoelectric Smart Aggregate Approach—Implementation on Arbitrary Shaped Concrete Plates

Marković,

Grdić,

Stojković

et al. 2023

Materials

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This paper presents the application of a hybrid approach for damage localization in concrete plates of arbitrary geometric shapes and a constant thickness. The hybrid algorithm utilizes fast discrete wavelet transformation, energy approach and time of flight criteria for the purpose of the localization of single- and multi-damage problems inside or on the periphery of concrete plates. A brief theoretical background of the hybrid method as well as numerical procedures for modeling the piezoelectric smart aggregate and ultrasonic wave propagation are presented. Experimental and numerical verification of the damage localization were performed on square samples/models with one or two damages and with 16 positions of piezoelectric smart actuator/sensor aggregates. After the verification of the hybrid method, a numerical simulation was performed on models with one or two damages for plates of arbitrary geometric shapes. Based on the obtained results, it was concluded that the proposed method can be applied to damage localization in concrete plates of arbitrary geometric shapes. The presented method and numerical procedure can be further used in research through varying the geometry, number and position of damages as well as the number and position of piezoelectric smart aggregates.

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Section: Introductionmentioning

confidence: 99%

Two-Dimensional Damage Localization Using a Piezoelectric Smart Aggregate Approach—Implementation on Arbitrary Shaped Concrete Plates

Marković,

Grdić,

Stojković

et al. 2023

Materials

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Evaluation of Seismic Response on Small-Scale Reinforced Concrete Frame Using Small-Scale Low-Cost Equipment’s

Senthil,

Yadav,

Singh

et al. 2024

IOP Conf. Ser.: Earth Environ. Sci.

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The security of the infrastructures is an important part and the responsibility of the nation. Therefore, the study is focused on investigating the seismic response of small-scale buildings through the shake table test. The small scale reinforced concrete building of two storey was modelled through the experiment as well as numerical simulations considering 40 MPa concrete strength. The size of the slab was 600 × 600 mm and thickness were 40 mm. The cross section of the column was 50 × 50 mm whereas the height was 300 mm. The galvanized wire was used as main reinforcement and stirrups bar having tensile strength 875 MPa and yield strength 636 MPa. The small-scale building frame was tested under the small-scale shake table which is working with adjustable speed by varying the voltage. The seismic waves were varied by considering different voltages such as 20, 40, 60 and 80V using the shake table. In order to minimize the percentage of error, more than 20 sets of observations were made at each of the voltage levels. The frequency of seismic waves such as 0.175, 0.348, 0.511 and 0.692/s was produced corresponding 20, 40, 60 and 80V, respectively. The displacement of slabs on the ground floor, first, second and third floor was recorded using the LVDT for the duration of 50 sec. The maximum top storey displacement was 50.45, 51.70, 55.31 and 61.04 against the frequency of 20, 40, 60 and 80V respectively. It was observed that the storey drift was ground, first and second floor was 0.42, 0.47 and 0.85, respectively at 60V. The numerical analysis was performed using ABAQUS finite element software incorporating concrete damage plasticity model and elasto-plastic model for concrete and reinforcement bar, respectively. The predicted storey drifts were found to be in good agreement with the experimental results corresponding to 60V. Further, the maximum peak positive acceleration predicted from the simulation was 4.72, 3.03 and 1.93g, respectively at the third (top), second (middle) and first slab (bottom), respectively.

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Evaluation of Vibration Detection Using Smartphones in a Two-Story Masonry-Infilled RC Frame Building

Cited by 2 publications

References 40 publications

Two-Dimensional Damage Localization Using a Piezoelectric Smart Aggregate Approach—Implementation on Arbitrary Shaped Concrete Plates

Two-Dimensional Damage Localization Using a Piezoelectric Smart Aggregate Approach—Implementation on Arbitrary Shaped Concrete Plates

Evaluation of Seismic Response on Small-Scale Reinforced Concrete Frame Using Small-Scale Low-Cost Equipment’s

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