• Author(s): Mikola, Roozbeh Geraili; Sitar, Nicholas
  
• Published By: University of California
  
• Published Year: 2013
  
• Size: 4,2 MB
  
• Quality: Unspecified
  
• Abstract: Observations of the performance of basement walls and retaining structures in recent
  earthquakes show that failures of basement or deep excavation walls in earthquakes are rare even
  if the structures were not designed for the actual intensity of the earthquake loading. Failures of
  retaining structures are most commonly confined to waterfront structures retaining saturated
  backfill with liquefaction being the critical factor in the failures. Failures of other types of
  retaining structures are relatively rare and usually involve a more complex set of conditions, such
  as sloping ground either above or below the retaining structure, or both. While some failures
  have been observed, there is no evidence of a systemic problem with traditional static retaining
  wall design even under quite severe loading conditions. No significant damage or failures of
  retaining structures occurred in the recent earthquakes such as Wenchuan earthquake in China
  (2008) and, or the large subduction zone earthquakes in Chile (2010) and Japan (2011).
  Therefore, this experimental and analytical study was undertaken to develop a better
  understanding of the distribution and magnitude of seismic earth pressures on cantilever
  retaining structures.
  The experimental component of the study consists of two sets of dynamic centrifuge
  model experiments. In the first experiment two model structures representing basement type
  setting were used, while in the second test a U-shaped channel with cantilever sides and a simple
  cantilever wall were studied. All of these structures were chosen to be representative of typical
  designs. Dry medium-dense sand with relative density on the order of from 75% to 80% was
  used as backfill. Results obtained from the centrifuge experiments were subsequently used to
  develop and calibrate a two-dimensional, nonlinear, finite difference model built on the FLAC
  platform.
  

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• Author(s): Candia Agusti, Gabriel; Sitar, Nicholas
  
• Published By: The Earthquake Engineering Online Archive
  
• Published Year: 2013
  
• Size: 8 MB
  
• Quality: Unspecified
  
• Related Link:
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  http://nisee.berkeley.edu/elibrary/Text/201308162
  
  
  
• Abstract: Report presents the results of centrifuge model experiments and numerical analyses of seismic response of retaining structures with cohesive backfill. The experimental results show that the static and seismic earth pressures increase linearly with depth and that the resultant acts at 0.35H-0.4H, as opposed to 0.5-0.6H assumed in current engineering practice. Overall, the results also show that typical retaining walls designed with a static factor of safety of 1.5 have enough strength capacity to resist ground accelerations up to 0.4g.
  

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UCB/GT-2013-02, University of California, Berkeley, Geotechnical Engineering




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• Author(s): different - many authors
  
• Published By: Springer
  
• Published Year: 1989-2016 current time
  
• Size: 47 MB
  
• Quality: Unspecified
  
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  http://link.springer.com/journal/158
  
  
  
• Abstract: Description
  
  Structural and Multidisciplinary Optimization
  
  ·        explores a wide range of topics dealing with optimization in solid (structural) and fluid mechanics (including CFD)
  
  ·        covers multidisciplinary optimization when one discipline deals with structures or fluids
  
  ·        examines closely related fields that are relevant to structural or fluid optimization
  
  ·        is the official journal of the International Society of Structural and Multidisciplinary Optimization (ISSMO)
  
  The journal’s scope ranges from mathematical foundations of the field to algorithm and software development, and from benchmark examples to case studies of  practical applications in structural, aero-space, mechanical, civil, chemical, naval and bio-engineering.
  
  Fields such as computer-aided design and manufacturing, reliability analysis, artificial intelligence, system identification and modeling, inverse processes, computer simulation, bio-mechanics, bio-medical applications, nano-technology, MEMS, optics, chemical processes, computational biology, meta-modeling, DOE and active control of structures are covered when the topic is closely related to the optimization of structures or fluids.  
  

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I now uploaded for 1989-1991 year
Be patient for rest year publication




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