• Title/Summary/Keyword: Construction Vibration

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A Study on the Excavation Method Near Fish Farms and Livestock (양만장 및 가축사육시설 인접지역 암굴착공법 검토에 관한 연구)

  • Lim, Dae-Kyu;Shin, Young-Cheol;Jun, Yang-Bae
    • Explosives and Blasting
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    • v.31 no.1
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    • pp.23-32
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    • 2013
  • Construction vibration such as explosive blast, hydraulic breaker, vibratory roller, pile driving noise and so on, injuries in areas around the construction sites. In particular, underwater sound caused by ground vibration is propagation such as structure borne noise. Vibration and underwater sound due to construction activities may cause injury to river, sea or land fish farms near construction sites. The purpose of present study is to measure the sound pressure level and frequency analysis of the underwater noise generated by ground vibration(Blasting, hydraulic crawler drill, hydraulic breaker, vibratory roller). Underwater noise were monitoring by a hydrophone (TC 4013) and recorded, analysis were made using a by software (Prosig).

Study on Present Status and Improvement of Automatically Noise-measuring System in Construction Site (건설공사장 소음자동측정망 현황 및 개선에 관한 연구)

  • Sun, Hyo-Sung;Park, Young-Min
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2008.11a
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    • pp.616-618
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    • 2008
  • The objective of this study is to prepare the plan for managing construction noise effectively and solving the popular enmity from construction noise reasonably. In order to carry out this purpose, it covers the efficient improvement plan for installing and managing the automatically noise-measuring system which shows the advantage for construction noise management and popular enmity solution due to construction noise.

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Developing noise prediction software for Improvement of the construction noise management (공사장 소음 관리 효율화를 위한 소음예측프로그램 개발)

  • An, Jang-Ho;Lee, Jun-Seo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2009.04a
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    • pp.155-156
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    • 2009
  • Construction companies can easily understand present noise condition of their construction site via C-Noise. C-Noise is noise simulation software that simple to use. Construction companies spend time and cost for public complaints about construction noise. Construction site noise management using noise simulation software like C-Noise can reduce public complaint. achieve cost reduction to treat it.

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A Study on the Environmental Friendly Noise and Vibration Management Method for the Construction Project (건설사업의 소음 $\cdot$ 진동 관리방안에 관한 연구)

  • Ko Kwang-il;Kim In-ho;Seo Sang-wook;Lee Chan-sik
    • Korean Journal of Construction Engineering and Management
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    • v.5 no.6 s.22
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    • pp.110-117
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    • 2004
  • The environmental-related disputes and claims are steeply increasing recently. Among them the number of disputes and claims on noise and vibration incurred in the process of construction is more than $85\%$. Since those disputes and claims cause cost overrun and or penalty and bad impression for the construction company, it is necessary to develop a systematic management method for solving them. This study presents a environmental management structure based on the examining many kinds of environmental-related laws including 'The Act on Regulation of Noise and Vibration' furthermore, through analysing various dispute and claim cases, and surveying literatures we suggest environmental study noise and vibration management method using for the preconstruction phase, the construction phase and the post construction phase, respectively.

A Case Study of Dispute Mediations on Construction Noise and Vibration Damages for Environmental Dispute Mediation (환경조정분쟁에 의한 건설소음.진동 피해분쟁조정 사례분석)

  • Jung, Eun-Jung;Kim, Jae-Soo
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2007.11a
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    • pp.258-262
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    • 2007
  • Recently people have come to demand more pleasant environments as the quality and right of life have been improved. Along with industrial development, the tendency is causing a growing number of disputes concerning environmental damages. Of many kind of environmental damages, noise and vibration pollution rising at construction fields are particularly the most common subjects of public grievance. Thus the government launched the Environments Dispute Mediation Committee in 1991, purposing to utilize fully the promptness and expertise of administrative institutes and to resolve environmental damage disputes promptly and fairly by interfering in them actively. With the prompt and fair dispute mediations of the committee, people came to be able to get fair and prompt remedies for damages in their health and fortune by environmental pollution. Therefore, by analyzing dispute mediation cases on construction noise and vibration damages, we will suggests basic material on which efficient actions can be takes for public grievances happening in the future.

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Determination of stay cable force based on effective vibration length accurately estimated from multiple measurements

  • Chen, Chien-Chou;Wu, Wen-Hwa;Huang, Chin-Hui;Lai, Gwolong
    • Smart Structures and Systems
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    • v.11 no.4
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    • pp.411-433
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    • 2013
  • Due to its easy operation and wide applicability, the ambient vibration method is commonly adopted to determine the cable force by first identifying the cable frequencies from the vibration signals. With given vibration length and flexural rigidity, an analytical or empirical formula is then used with these cable frequencies to calculate the cable force. It is, however, usually difficult to decide the two required parameters, especially the vibration length due to uncertain boundary constraints. To tackle this problem, a new concept of combining the modal frequencies and mode shape ratios is fully explored in this study for developing an accurate method merely based on ambient vibration measurements. A simply supported beam model with an axial tension is adopted and the effective vibration length of cable is then independently determined based on the mode shape ratios identified from the synchronized measurements. With the effective vibration length obtained and the identified modal frequencies, the cable force and flexural rigidity can then be solved using simple linear regression techniques. The feasibility and accuracy of the proposed method is extensively verified with demonstrative numerical examples and actual applications to different cable-stayed bridges. Furthermore, several important issues in engineering practice such as the number of sensors and selection of modes are also thoroughly investigated.

Vibration and Noise Analysis According to Blasting Method (발파공법에 따른 진동 및 소음 분석)

  • Kim, Min-Hyouck
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2022.04a
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    • pp.150-151
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    • 2022
  • Blasting is a method that uses explosives to crush the ground. This method is a highly efficient ground cleaning method that can secure high efficiency in a short time. However, explosions can damage local properties and produce high noise and vibration. Therefore, it is important to be careful because there are disadvantages such as the occurrence of many complaints from the surrounding area. In this paper measured and analyzed the noise and vibration generated during blasting at the blasting site in Korea. The noise and vibration generated during blasting were measured by ES03303.2b and ES03402.2a at a distance of 6 m, 12 m from the blasting point. As a result of the measurement, there was little difference between small and medium scale except for precision vibration blasting at a distance of 6m, but noise difference according to blasting scale was evident at a distance of 12m. As a result of the measurement, the maximum noise level was reduced to 5.5 dB(A) and the vibration level was reduced to 7.7 dB(V). In the future, the reliability of the test results can be further improved through additional tests, and it is judged that noise and vibration prediction models based on blasting methods, amount of charge, measuring distance, etc. can be developed.

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The properties of noise and vibration in Whirlpool bath and plan for its reduction (공동주택 월풀욕조의 소음진동 특성 및 저감 방안)

  • Bae, Sang-Hwan;Lee, Byung-Kwon
    • Proceedings of the SAREK Conference
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    • 2005.11a
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    • pp.506-510
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    • 2005
  • This study shows work on the properties of noise and vibration in Whirlpool bath and plan for its reduction. Totally through 3 steps. we found out the properties of noise and vibration. various anti-vibration design for an effeciency test is conducted. By Anti-vibration for the pump causing vibration, about 4dB(A) was reduced. Moreover. by anti-vibration construction fixing the bathtub frame. about 3db(A) could be reduced. In the case of anti-vibration construction about the wall around the bathtub. and spreading damping paint on the bathtub. the noise was reduced.

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A Case Study of Dispute Mediations on Construction Noise and Vibration Damages (건설소음진동 피해분쟁조정 사례분석에 관한 연구)

  • 곽광수;김재수
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 2001.11a
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    • pp.108-113
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    • 2001
  • Recently people have come to demand more pleasant environments as the quality and right of life have been improved. Along with industrial development, the tendency is causing a growing number of disputes concerning environmental damages. Of many kinds of environmental damages, noise and vibration pollution rising at construction fields are particularly the most common subjects of public grievance. Thus the government launched the Environmental Dispute Mediation Committee in 1991, purposing to utilize fully the promptness and expertise of administrative institutes and to resolve environmental damage disputes promptly and fairly by interfering in them actively. With the prompt and fair dispute mediations of the committee, people came to be able to get fair and prompt remedies for damages in their health and fortune by environmental pollution. Therefore, by analyzing dispute mediation cases on construction noise and vibration damages, we will suggest basic material on which efficient actions can be taken for public grievances happening in the future.

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A Study on the Characteristics of the Floor Impact Noise and Vibration According to Structure Types of Apartment House (공동주택 구조 유형별 바닥진동 및 바닥충격음 특성)

  • Lee, Ku-Dong
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2009.11a
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    • pp.35-39
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    • 2009
  • Recently, the flat-plate structure is widely used because it has many advantages such as reduction of story height, long span etc than the RC rahmen structure. Furthermore, application of the flat-plate is on the increase because of flexible plan unlike wall structure. Long span have been at a disadvantage for vibration serviceability evaluation, however studies about vertical direction vibration of flat-plate structure has not been carried out. This study analysis the characteristics according to slab structure to make an experiment on vibration and floor impact noise for the flat-plate structure in construction performance laboratory in Kolon E&C R&D center, the flat-plate structure applied to the post-tension method, and the wall structure in apartment houses.

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