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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.
11

An investigation of rigid-jointed rectangular braced steel frames.

Choi, Ching-kui. January 1970 (has links)
Thesis--M. Sc.(Eng.), University of Hong Kong. / Typewritten.
12

Bolted and screwed connections of thin sheet steels at elevated temperatures

Yan, Shu, 閆澍 January 2012 (has links)
The structural behaviour of single shear bolted connections, double shear bolted connections and single shear screwed connections of thin sheet steels at elevated temperatures has been investigated in this study. The current design rules on bolted and screwed connections of thin sheet steels for cold-formed steel structures are applicable for ambient temperature condition only. These design rules may not be applicable for elevated temperature conditions. Therefore, design guidelines should be prepared for bolted and screwed connections of cold-formed steel structures at elevated temperatures. A total of 30 tensile coupon tests were conducted to investigate the material deterioration of the thin sheet steels at elevated temperatures, and also to determine the critical temperatures for connection tests. A total of 510 tests on single shear bolted connections, double shear bolted connections and single shear screwed connections of thin sheet steels at elevated temperatures was performed in the temperature ranged from 22 to 900?C using both steady state and transient state test methods. The test results were compared with the predicted values calculated from the North American, Australian/New Zealand and European specifications for coldformed steel structures. In calculating the nominal strengths of the connections, the reduced material properties of the thin sheet steels were used due to the deterioration of material at elevated temperatures. It is shown that the design strengths predicted by these specifications are generally conservative at elevated temperatures. Finite element models for single shear bolted connections, double shear bolted connections and single shear screwed connections were developed and verified against the experimental results. Explicit dynamic analysis technique was used in the numerical analyses. Extensive parametric studies that included 490 finite element specimens were carried out using the verified finite element models to evaluate the bearing strengths of bolted connections as well as the tilting and bearing strengths of screwed connections of thin sheet steels at elevated temperatures. Design equations for bearing strengths of bolted connections as well as design equations for tilting and bearing strengths of screwed connections were proposed based on both the experimental and the numerical results in the temperature ranged from 22 to 900?C. The bearing strengths of bolted connections as well as the tilting and bearing strengths of screwed connections obtained from the test specimens and the finite element analyses were compared with the predicted strengths calculated using the proposed design equations and also compared with the design strengths calculated using the current North American, Australian/New Zealand and European specifications with consideration of the reduced material properties at elevated temperatures. It is shown that the proposed design equations are generally more accurate and reliable in predicting the bearing strengths of bolted connections as well as the tilting and bearing strengths of screwed connections of thin sheet steels at elevated temperatures than the current design rules. The reliability of the current and proposed design rules was evaluated using reliability analysis. The proposed design equations are suitable for bolted and screwed connections assembled using thin sheet steels of thickness ranged from 0.35 to 3.20mm. / published_or_final_version / Civil Engineering / Doctoral / Doctor of Philosophy
13

Analysis of semi-rigid frames

Liu, Soung-Nan, 1936- January 1965 (has links)
No description available.
14

Behaviour of bolted double angle beam connections subjected to eccentric loads

Chung Wing, Philip T. C. January 1979 (has links)
No description available.
15

Modification of design characteristics of x-52 steel by changes of fabrication procedures

Ebadi, Yar Mohammad 08 1900 (has links)
No description available.
16

A new method for plastic design in structural steel

McChesney, Ralph Stanley 05 1900 (has links)
No description available.
17

Coefficient of friction of painted structural steel surfaces

Dooley, Robert Thomas 08 1900 (has links)
No description available.
18

Development of performance sections for cold-formed steel residential construction /

N'emedi, Zsolt V., January 1993 (has links)
Thesis (M.S.)--Virginia Polytechnic Institute and State University, 1993. / Vita. Abstract. Includes bibliographical references (leaf 73). Also available via the Internet.
19

Coupled axial and bending vibrations of a uniform beam-column with an oblique crack /

Ping, Hsin-Chih. January 1997 (has links)
Thesis (Ph. D.)--University of Washington, 1997. / Vita. Includes bibliographical references (leaves [100]-102).
20

Heat Transfer Analysis In Steel Structures

Narang, Vikas A. January 2005 (has links)
Thesis (M.S.) -- Worcester Polytechnic Institute. / Keywords: TAS modeling; finite element software; ASTM E-119. Includes bibliographical references (p. 99-100).

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