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dc.contributorMulti-disciplinary Studiesen_US
dc.creatorNg, Shui-ting Tony-
dc.identifier.urihttps://theses.lib.polyu.edu.hk/handle/200/3948-
dc.languageEnglishen_US
dc.publisherHong Kong Polytechnic University-
dc.rightsAll rights reserveden_US
dc.titleShear lag behaviour and dynamic characteristic of a tube-in-tube buildingen_US
dcterms.abstractTube-in-tube system is one of the most common structural system for high-rise buildings. The stiffness of an exterior hollow tube is very much improved by amalgamating the exterior core which responds as a unit to take lateral forces. However, there are not many references which discuss the shear lag behaviour of a tube-in-tube structure. One of the references is by F.R. Khan [4] who had carried out a simplified analytical method in studying the shear lag effect of a frame tube structure. This dissertation aims at analyzing the shear lag behaviour of a tube-in-tube structure on different structural configurations, spandrel beam sizes, and inner core sizes by using a more precise 3-dimensional finite element package. The results show that shear lag effect will be minimized with (i) aspect ratio equals to one; (ii) high stiffness spandrel beams and floor beams and (iii) enlargement of corner columns sizes. Further, the present study generates the design charts for the estimation of structural members sizes in the preliminary design stage. In addition to the above, the dynamic characteristic of the building is also studied. The first 6 modes of the tube-in-tube structure are computed and its vibration shapes are also depicted in Appendix A. Suggestions in improving the structure against vibration are also given.en_US
dcterms.extentiii, 76 leaves : ill. ; 30 cmen_US
dcterms.isPartOfPolyU Electronic Thesesen_US
dcterms.issued1994en_US
dcterms.educationalLevelAll Masteren_US
dcterms.educationalLevelM.Sc.en_US
dcterms.LCSHTall buildings -- Aerodynamicsen_US
dcterms.LCSHShear (Mechanics)en_US
dcterms.LCSHHong Kong Polytechnic -- Dissertationsen_US
dcterms.accessRightsrestricted accessen_US

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Please use this identifier to cite or link to this item: https://theses.lib.polyu.edu.hk/handle/200/3948