• Refine Query
  • Source
  • Publication year
  • to
  • Language
  • 4596
  • 1946
  • 722
  • 555
  • 531
  • 151
  • 112
  • 84
  • 72
  • 65
  • 53
  • 52
  • 51
  • 48
  • 42
  • Tagged with
  • 12239
  • 2621
  • 2057
  • 1178
  • 987
  • 978
  • 963
  • 962
  • 752
  • 678
  • 673
  • 669
  • 647
  • 641
  • 595
  • 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.

Performance-Based Analysis of Steel Buildings: Special Concentric Braced Frame

Adams, Scott Michael 01 September 2010 (has links)
The performance-based analysis methods and evaluation criteria in ASCE 41-06 were used to evaluate a special concentric braced frame building based on the design standards in ASCE 7-05. A rectangular, six-story office building was evaluated using linear static, linear dynamic, nonlinear static, and nonlinear dynamic procedures. The results showed that the linear procedures underestimated damage compared to the nonlinear procedures, with the building performing to Life Safety for the linear procedures, and the nonlinear procedures indicating component damage beyond the intended Life Safety limit for the 2/3 maximum considered earthquake (MCE) hazard. This trend continued to the maximum considered earthquake hazard as well, under which the overall building performance for the linear procedures did not reach the Collapse Prevention level, which occurred in the nonlinear procedures.

Open web steel joists framing between columns

Ettehadieh, Ahmad-Ali January 1979 (has links)
No description available.

The development of Hong Kong structural engineering standards after the Second World War and before 1997 Zhan hou dao hui gui qian Xianggang jie gou gong cheng gui fan fa zhan de tan tao /

Ma, Koon-yiu. January 2007 (has links)
Thesis (M. A.)--University of Hong Kong, 2007. / Title proper from title frame. Also available in printed format.

Three-dimensional frameworks

Tozer, Barry Allan. January 1966 (has links) (PDF)
No description available.

Crustal structure of the Tehuantepec Ridge and adjacent continental margins of southwestern Mexico and western Guatemala

Woodcock, Stephen Frederick 17 July 1975 (has links)
A free-air gravity anomaly map of the area between 10°-17°N and 90°-101°W shows distinctive positive and negative anomalies which parallel the Tehuatepec Ridge. The positive anomaly approximately overlies the topographic expression of the ridge. On the wide continental shelf southeast of the Gulf of Tehuantepec a positive gravity anomaly with an amplitude in excess of +100 mgal parallels the coast for most of its length and turns abruptly inland at its northern end. A crustal and subcrustal cross section constrained by gravity, magnetic, seismic reflection and seismic refraction data and oriented normal to the Guatemala continental margin indicates the positive shelf anomaly is primarily the result of a relatively shallow 2.62 g/cm³ density block which may be continuous with and genetically similar to the rocks of the Nicoya Complex on the Nicoya Peninsula, Costa Rica. A crustal and subcrustal cross section normal to the continental margin off southern Mexico northwest of the Tehuantepec Ridge shows a shelf structure which is very different from the continental margin off Guatemala. This suggests different tectonic interactions at the convergent plate boundaries on opposite sides of the ridge. The Tehuantepec Ridge, in a crustal and subcrustal cross section oriented normal to its trend, is shown to occur at the juncture of two oceanic crusts of different structure and age. Southeast of the ridge in the Guatemala Basin the crust is about 9.5 km thick and northwest of the ridge the crust is about 12 km thick. Hence the Tehuantepec Ridge is essentially a fracture zone, but because its orientation is oblique to present plate motions and it is aseismic, it is concluded to be a relic fracture zone. / Graduation date: 1976

Structures of the continental margin of Central America from northern Nicaragua to northern Panama

Victor, Linda 24 September 1975 (has links)
Gravity and seismic data obtained by the geophysical group at Oregon State University on the R/V YAQUINA during 1969, 1971, and 1973 plus other available data over the area just west of Nicaragua and Costa Rica indicate the tectonic complexity of the region. Gravity measurements show negative free-air anomalies over the Middle America Trench and the continental shelf of Nicaragua with values as low as -120 mgal and -90 mgal respectively. An outer shell gravity high of +35 mgal occurs between the lows. A large positive anomaly attaining values as high as +110 mgal is associated with the Nicoya Complex, a late Mesozoic assemblage, on the Nicoya Peninsula, Costa Rica. Continuous seismic reflection records acquired along the continental shelf of Nicaragua and Costa Rica indicate a large sediment-filled basin off the coast of Nicaragua coincident with the large negative gravity anomaly on the shelf. Free-air gravity anomalies and seismic reflection profiles suggest an offshore continuation of the Nicoya Complex. Two crustal and subcrustal cross sections of the continental margin of Nicaragua show a large anticlinal structure near the surface of the outer shelf. This structure and an underlying layer are postulated to be marine sediments and basalts similar to those of the Nicoya Complex. The cross sections suggest a ruptured oceanic layer beneath the trench. Imbricate thrusting of oceanic crust along the continental slope is postulated as the mechanism of formation of the continental slope and shelf, and hence the Nicoya Complex of Costa Rica. This model has to be modified for southern Costa Rica where the Cocos Ridge terminates the Middle America Trench. The present elevation of the Nicoya Complex onshore may be attributed to imbricate thrusting and concurrent uplift of the shelf by the Cocos Ridge during subduction. / Graduation date: 1976

Structural framework of the Sunda Shelf and vicinity /

Ben-Araham, Zvi, January 1973 (has links)
Thesis--Massachusetts Institute of Technology. / Vita.

The case for NE-SW extension in northeast Oregon /

Essman, Jim E. January 1900 (has links)
Thesis (M.S.)--Oregon State University, 2003. / Includes maps in pocket. Typescript (photocopy). Includes bibliographical references (leaves 57-63). Also available via the World Wide Web.

Lateral load analysis of shear wall-frame structures

Akış, Tolga. January 2004 (has links) (PDF)
Thesis (Ph. D.)--Middle East Technical University, 2004. / Keywords: Shear Wall, Shear Wall-Frame Structures, Wide Column Analogy.

Nonlinear and cyclic behaviour of infilled frames /

Kwan, Kwok-hung, Albert. January 1982 (has links)
Thesis--Ph. D., University of Hong Kong, 1983.

Page generated in 0.0956 seconds