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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Punching shear failure of reinforced concrete flat slabs supported on steel edge column

Ngekpe, B. E. January 2016 (has links)
This study examines punching shear failure at edge supported flat slab. Due to the significant dearth of research on punching shear at edge steel column, this study focuses on the design and performance of a novel shearhead system proposed for edge connection. By considering multi-stage processes and parameters that influence punching shear failure, both numerical and experimental studies were adopted. Firstly linear finite element analysis was employed to study the relationship between the continuous structure and the representative specimen; in order to support decisions on boundary conditions that create the similitude. A nonlinear (NLFEA) model was proposed where various concrete material constitutive models were compared and contrasted. The Total Strain crack model was adopted on the ground that it accounts for the tensile strength of cracked concrete which was ignored in previous theoretical model that lead to poor prediction of punching shear. By considering the appropriate material constitutive model for concrete and steel, material parameters, appropriate modelling scheme capable of predicting punching shear was formulated. The adopted modelling scheme was validated using previous research work. Numerical results reveal that punching shear is influenced most significantly by concrete tensile strength, fracture energy. The shearhead assembly was design with using ACI318-05 and Newzealand codes recommendations with some modifications. These are only codes that provide design guidance on shearhead. Experimental and numerical results show that the shearhead contributes appreciably to punching shear capacity of the edge connection. Various design codes on punching shear were compared; Eurocode 2 provides a good prediction of punching shear at edge support; which correlate well with experimental result. Hence, it was adopted to propose an equation for punching shear for edge connection with shearheads. Most importantly, appropriate design guidance and analytical equation have been proposed for shearhead connection. The design guidance and equation would enable practising Engineers to design shearheads without going through the rigor of experimental or numerical investigation. This study has contributed appreciably to the applicability of steel column in flat slab construction.
2

Bracing design requirements for inelastic members

Li, Guzhao. January 2002 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references.
3

Bracing design requirements for inelastic members

Li, Guzhao 04 May 2011 (has links)
Not available / text
4

TIE PLATE EFFECTS IN WEAKLY BATTENED COLUMNS

Freeman, Barbara Gail, 1932- January 1973 (has links)
No description available.
5

Bracing design requirements for inelastic members /

Li, Guzhao. January 2002 (has links)
Thesis (Ph. D.)--University of Texas at Austin, 2002. / Vita. Includes bibliographical references (leaves 180-184). Also available in an electronic version.
6

Behaviour of high strength steel columns at elevated temperatures

Chen, Ju, January 2007 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.
7

BUCKLING STRENGTH OF HEAVY STEEL COLUMNS (WELDED SHAPES, INITIAL CURVED COLUMNS, HOT-ROLLED SHAPES)

Al-Shihri, Marai Abdullah, 1958- January 1986 (has links)
No description available.
8

Local buckling of large round HSS columns at simple beam connections

Salvatore, Mario. January 1984 (has links)
No description available.
9

Design of cold-formed high strength stainless steel tubular columns and beam-columns /

Lui, Wing Man. January 2004 (has links)
Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004. / Includes bibliographical references (leaves 149-154). Also available in electronic version. Access restricted to campus users.
10

Behaviour of high strength steel columns at elevated temperatures /

Chen, Ju, January 2007 (has links)
Thesis (Ph. D.)--University of Hong Kong, 2007. / Also available online.

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