• Title/Summary/Keyword: Building vibration

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A Study on the Control of the Floor Vibration in a Research Building (연구소(硏究所) 건물(建物)의 슬래브 진동(振動) 성능개선(性能改善) 연구(硏究))

  • Baik, In-Whee;Kang, Ho-Sub;Sohn, Young-Kyoo
    • Journal of the Korea Institute of Building Construction
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    • v.7 no.3
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    • pp.75-82
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    • 2007
  • A vibration in the building occurs by influences of the facility equipment and the structural system. As the building recently becomes higher and bigger, the vibration in the floor slab is issued. Specially, the vibration with $4{\sim}8Hz$ frequency is harder to control than any other range of frequency. This vibration easily affects human sensibility and often makes the resonance phenomenon by corresponding with the floor slab's natural frequency when people and heavy equipments move. Moreover, the permission regulations for the vibration of the building are established by building's purposes. However, it is not subdivided in detail and sometimes ambiguous to each client. Even though the vibration could cause negative influences in a research building, there is not the vibration criterion for a research building. Therefore, it is necessary to set up its own vibration criterion with the client before building and to keep checking this vibration criterion under the construction. This study proposes the reasonable control methods and the vibration criterion for floor slab's vibration which are adapted to the R4-project. The R4-project is a research building and a high-rise building also. Accordingly, this study could help to the next similar project in the design and the construction phase.

A Study on Vibration Isolation Technique of Building-augmented Wind Turbine (건물일체형 풍력발전기의 진동저감 기법 연구)

  • Lee, Jong Won;Moon, Seok-Jun
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.25 no.3
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    • pp.160-168
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    • 2015
  • Vibration issue of a building structure due to a wind turbine should be resolved for the application of building-augmented wind turbine. In this study, a dynamic analysis for an horizontal-axis upwind wind turbine is carried out to calculate vibration excited to an example building structure. Characteristics of vertical vibration transfer of the building structure are analytically studied and compared with a criteria. Then, a method to isolate the vibration is presented by analyzing the vibration characteristics of the wind turbine, and verified by applying to the building structure.

VIBRATION CONTROL OF SYNCHROTRON LIGHT SOURCE BUILDING USING EXPERIMENTAL MODAL ANALYSIS (실험적 모우드 해석을 이용한 방사광 가속기 건물의 진동제어)

  • 박상규;이홍기;권형오
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 1993.10a
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    • pp.157-161
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    • 1993
  • Optical devices and electronic equipments used in the laboratory of the synchrotron light source building of the accelerator have stringent vibration limits. In order to control the vibration of the building structure and HVAC systems which are main vibration sources are evaluated using experimental modal analysis. Double anti-vibration system is used for the HVAC system and results show that the double anti-vibration system reduces the vibrations of the building to acceptable levels.

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An Experimental Study on the Vertical Vibration Transfer in Horizontal Way according to Shear Wall Building Structures due to Exciting Vibration Forces (전단벽식 건축구조물 수직진동의 수평방향 전달특성에 관한 실험연구)

  • Chun, Ho-Min
    • Transactions of the Korean Society for Noise and Vibration Engineering
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    • v.16 no.3 s.108
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    • pp.270-282
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    • 2006
  • In general, the vertical vibration problems for strength of members and serviceability of building structures are not considered in structural design process, but the prediction of the vertical vibration is very important and essential to structural design process. This study aims to investigate the characteristics of vertical vibration in terms of the transfer of horizontal directions to near-rooms on the shear wall building structures. In order to examine the characteristics of vertical vibration, the modal test and the impact (heel-drop and hammer) excitation experiments were conducted several times on two building structure. The results from the experiments are analyzed and compared with the results. The results of this study suggest that the characteristics of vertical vibration transfer in horizontal way are effected from the fundamental frequency of the slabs, and are effected the shear wall on the Path of the vibration transfer.

An Experimental Study on the Vertical Vibration Transfer according to Shear Wall Building Structures due to Exciting Vibration Forces (전단벽식 건축구조물의 수직진동 전달특성에 관한 실험연구)

  • Chun Ho-Min
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2005.04a
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    • pp.159-166
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    • 2005
  • The vibration on building structures due to exciting vibration forces has been studied only for the vibration level on existing buildings. Recently, several researches have been performed on the prediction of vertical vibration on structures by using an analytical method. However, these studies have been focused on mainly the vibration analysis through analytical modeling of structures. This study aims to investigate the characteristics of vertical vibration transfer in terms of the directions of transfer(upward transfer and downward transfer) on the shear wall building structures due to 2 type vibration forces. In order to examine the characteristics of vertical vibration transfer, the mode analysis and the impact experiment were conducted several times on one building structure. The results of this study suggest that the characteristics of vertical vibration transfer are different in terms of the directions of transfer.

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Characteristics of Vertical Vibration Transfer according to RC Structure Systems (RC조 건축물의 구조시스템에 따른 수직진동 전달 특성 비교)

  • Chun, Ho-Min
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2006.11a
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    • pp.196-201
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    • 2006
  • In general, the vertical vibration problems for strength of members and serviceability of building structures are not considered in structural design process, but the prediction of the vertical vibration is very important and essential to structural design process. This study aims to investigate the characteristics of vertical vibration in terms of the transfer of horizontal directions on the rahmen building structures and the shear wall building structures. In order to examine the characteristics of vertical vibration, the modal test and the heel-drop excitation experiments were conducted several times on the two type building structures. The results from the experiments are analyzed and compared with the results. The results of this study suggest that the characteristics of vortical vibration transfer in horizontal way are effected from the fundamental frequency of the slabs and excitation forces and are effected the shear wall on the path of the vibration transfer.

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The Countermeasure which reduces the Noise and Vibration of the building Elevator (건축물(建築物) Elevator의 소음진동(騷音振動) 저감(低減) 방안(方案))

  • Jeon, Euy-Sik;Cho, Byoung-Hoo
    • Journal of The Korean Digital Architecture Interior Association
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    • v.5 no.2
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    • pp.36-42
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    • 2005
  • The interest about noise and vibration which occurs in buildings is increasing by a living level elevation recently. Particularly, the vibration which occurs from the elevator cage of the building is possibility of damage to the users of the building continuously. So, the purpose of this study is a placeThe interest about noise and vibration which occurs in buildings is increasing by a living level elevation recently. Particularly, the noise and vibration which occurs from the elevator of the building is possibility of damage to the users of the building continuously. So, the objective of this research is to investigate the noise and vibration of the elevator and propose the method which reduces of it gained thorough this study.

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Integration of health monitoring and vibration control for smart building structures with time-varying structural parameters and unknown excitations

  • Xu, Y.L.;Huang, Q.;Xia, Y.;Liu, H.J.
    • Smart Structures and Systems
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    • v.15 no.3
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    • pp.807-830
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    • 2015
  • When a building structure requires both health monitoring system and vibration control system, integrating the two systems together will be cost-effective and beneficial for creating a smart building structure with its own sensors (nervous system), processors (brain system), and actuators (muscular system). This paper presents a real-time integrated procedure to demonstrate how health monitoring and vibration control can be integrated in real time to accurately identify time-varying structural parameters and unknown excitations on one hand, and to optimally mitigate excessive vibration of the building structure on the other hand. The basic equations for the identification of time-varying structural parameters and unknown excitations of a semi-active damper-controlled building structure are first presented. The basic equations for semi-active vibration control of the building structure with time-varying structural parameters and unknown excitations are then put forward. The numerical algorithm is finally followed to show how the identification and the control can be performed simultaneously. The results from the numerical investigation of an example building demonstrate that the proposed method is feasible and accurate.

An Experimental Study on the Vertical Vibration Transfer according to Rahmen Building Structures due to Train Loads (라멘조 건축구조물의 수직진동 전달특성에 관한 실험연구)

  • 전호민
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2004.10a
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    • pp.469-475
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    • 2004
  • The vibration on building structures due to exciting vibration forces has been studied only for the vibration level on existing buildings. Recently, several researches have been performed on the prediction of vertical vibration on structures by using an analytical method. However, these studies have been focused on mainly the vibration analysis through analytical modeling of structures. This study aims to investigate the dynamic characteristics of vertical vibration transfer from lower stories to upper ones on the Rahmen building structures due to traffic loads. In order to examine the characteristics of vertical vibration transfer, the mode analysis and the impact experiment were conducted several times on one building structures. The results of this study suggest that the characteristics of vertical vibration transfer are different in terms of the type of trains.

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A Study on Vibration Analysis for the Slab of Apartment Building (아파트 슬래브의 진동평가에 관한 연구)

  • Park Kang-Geun;Kim Yong-Tae;Choi Young-Wha
    • Proceedings of the Computational Structural Engineering Institute Conference
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    • 2006.04a
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    • pp.333-340
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    • 2006
  • In these days the floor vibration is beginning to make its appearance of the environmental dispute in apartment building. Standard floor system are suggested for the settlement of this issue by government. The sound of floor impact sound is needed to secure comfortable quality in housing. Also, it is required an accurate analysis and a proper evaluation for floor vibration. Refine model is necessary for the floor system of housing to analyze accurately the floor vibration. But this refine model is not efficient because it is required so much running time for vibration analysis and it is difficult of modeling of standard floor slab. In this paper, new modeling methods of standard floor slab are proposed for the accurate rigidity evaluation. By using the new modeling method, the accurate vibration response can be obtained and can accurately evaluate the rigidity of standard floor system with resilient materials. Therefore the proposed modeling method is of practical use for vibration analysis of floor system of apartment building.

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