{"title":"EXPERIMENTAL STUDY OF VIBRATIONS IN UNDERGROUND STRUCTURES","authors":"N. Thusyanthan, S. Madabhushi","doi":"10.1680/GENG.2003.156.2.75","DOIUrl":null,"url":null,"abstract":"Vibrations produced on the ground surface by engineering construction processes can damage underground structures. At present there is little knowledge of the level of surface vibrations that could cause such damage. The relevant British Standards, BS 5228 and BS 7385, have little relevance to underground structures. This paper presents experimental investigations on small model tunnels that were instrumented with miniature accelerometers. Impulsive and vibratory loadings were produced on the soil surface by a drop hammer mechanism and an electric eccentricmass motor respectively to simulate dynamic loading from construction activity. It was found that tunnels with different lining materials absorb different amounts of vibration energy. Power spectrum analysis of the acceleration signals showed that the vibrations are transferred into a brass model tunnel at lower frequencies than for a plastic model tunnel. A relationship has been proposed for the ratio of energy transferred and the ratio of impedance mi...","PeriodicalId":45150,"journal":{"name":"Geotechnical Engineering","volume":"156 1","pages":"75-81"},"PeriodicalIF":0.3000,"publicationDate":"2003-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1680/GENG.2003.156.2.75","citationCount":"10","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geotechnical Engineering","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1680/GENG.2003.156.2.75","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q4","JCRName":"ENGINEERING, GEOLOGICAL","Score":null,"Total":0}
引用次数: 10
Abstract
Vibrations produced on the ground surface by engineering construction processes can damage underground structures. At present there is little knowledge of the level of surface vibrations that could cause such damage. The relevant British Standards, BS 5228 and BS 7385, have little relevance to underground structures. This paper presents experimental investigations on small model tunnels that were instrumented with miniature accelerometers. Impulsive and vibratory loadings were produced on the soil surface by a drop hammer mechanism and an electric eccentricmass motor respectively to simulate dynamic loading from construction activity. It was found that tunnels with different lining materials absorb different amounts of vibration energy. Power spectrum analysis of the acceleration signals showed that the vibrations are transferred into a brass model tunnel at lower frequencies than for a plastic model tunnel. A relationship has been proposed for the ratio of energy transferred and the ratio of impedance mi...
期刊介绍:
The objectives of the Association shall be the promotion of co-operation among geotechnical societies in SE Asia; and the assistance to member societies who have limited number of members. Now there is only one combined web titled: AGSSEA-SEAGS. SEAGS & AGSSEA encourage the submission of scholarly and practice-oriented articles to its journal. The journal is published quarterly. Both sponsors of the journal, the Southeast Asian Geotechnical Society and the Association of Geotechnical Societies in Southeast Asia, promote the ideals and goals of the International Society of Soil Mechanics and Geotechhnical Engineering in fostering communications, developing insights and enabling the advancement of the geotechnical engineering discipline.