Author: Ivan Gomez Amit Kanvinde ;Chris Smith Gregory Deierlein | Size: 6.3 MB | Format:PDF | Quality:Unspecified | Publisher: University of California, Davis ;Stanford University | Year: 2009 | pages: 159
This report presents the results of an experimental study investigating shear transfer mechanisms of column base plate details. This investigation is the first phase of a broader study whose aim is to develop improved design guidelines for column base plates. A review of existing design guidelines and published research reveals that shear transfer mechanisms in exposed base plates are not well understood, and methods to characterize
strength capacities in shear are not adequately supported by experimental data. To investigate shear transfer in exposed column base plates, seven large scale specimens were subjected to a combination of axial compression, axial tension and lateral shear deformations. The tests investigated three mechanisms commonly used for shear transfer in base plates, including (1) friction between the base plate and the grouted footing, with and without steel shim stacks (2) anchor rod bearing and (3) shear key bearing. The base plate tests are complemented by ancillary tests to characterize material properties.
Three tests which investigate surface friction indicate that the coefficient of friction between a steel base plate with mill scale and a grouted surface, with or without shim stacks, is 0.45. This value is lower than the design value of 0.55 recommended by the Steel Design Guide One, published by the American Institute of Steel Construction.
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Author: Nol Gresnigt Delft University of Technology, Civil Engineering and Geosciences, the Netherlands Arie Romeijn Delft University of Technology, Civil Engineering and Geosciences, the Netherlands FrantiΕ‘ek Wald Czech Technical University, Prague, Czech Republic Martin Steenhuis β Eindhoven University of Technology, Faculty of Architecture, Building and Planning, the Netherlands | Size: 984 KB | Format:PDF | Quality:Unspecified | Publisher: HERON Vol. 53 (2008) No. 1/2 | Year: 2008 | pages: 22
Connections of steel columns to concrete foundations may be loaded by combinations of
normal force, bending moment and shear force. Shear force will primarily be transmitted by
friction between the base plate and the grout layer to the concrete foundation. If the compression force is small, or if tension force is present, as may occur in slender high rise structures like towers and masts, the friction will be small or absent. Then, the anchor bolts will be loaded by shear force and bending moment. At the Stevin Laboratory of Delft University of Technology, experimental and theoretical research has been carried out on column bases loaded by combinations of shear force and tension force.
In the paper, the main results of this research programme are summarised. The test results are presented and the analytical model that was developed to describe the load deformation
behaviour.
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Posted by: ir_71 - 06-01-2014, 07:58 AM - Forum: Concrete
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Concreting and High Performance Concrete in Hot Weather
Author: Editors: M. M. El-Hawary, N. Al-Mutairi, K. N. Rahal | Size: 76.29 MB | Format:PDF | Quality:Unspecified | Publisher: American Concrete Institute Kuwait Chapter (ACI-KC) | Year: 2003 | pages: 246
Proceedings of the ACI-KC First International Conference & Fourth Exhibition, September 29 - October 1, 2003, Kuwait - Concreting and High Performance Concrete in Hot Weather
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Posted by: ir_71 - 05-31-2014, 08:21 AM - Forum: Concrete
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Design and Sustainability of Structural Concrete in the Middle East with Emphasis on High-Rise Buildings
Author: Edited by: M. M. El-Hawary, N. Al-Mutairi, K. N. Rahal and H. Kamal | Size: 8.78 MB | Format:PDF | Quality:Original preprint | Publisher: American Concrete Institute Kuwait Chapter (ACI-KC) | Year: 2007 | pages: 393
Concrete in the Middle East with Emphasis on High-Rise Buildings took place on March 12- 14, 2007 in Kuwait. The topics covered by the conference include:
β’ Sustainable Building Materials
β’ Recycling of Building Materials
β’ Management and Utilization of Natural Resources
β’ Design Aspects of Sustainability
β’ Codes Related to Design and Sustainability
β’ Maintenance and Repair of Structures
β’ Durability and Long-lasting Structures and High-Rise Buildings
β’ Sustainability and Durability of Concrete
β’ Sustainability and High-Rise Buildings
β’ Sustainability in Hot Weather
A total of thirty two technical papers from thirteen different countries were accepted for
presentation at the conference and are included in the proceedings.
ACI-KC hopes that this document adds to the technical knowledge
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Los Angeles Tall Buildings Structural Design Council (LATBSDC)
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LATBSDC 2013 Conference
Advances in Structural Design for Seismic Regions
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which contents the following topics:
Welcome
An Alternative Procedure For Seismic Evaluation and Strengthening of Tall Reinforced Concrete Buildings Located in the Los Angeles Region by N. Delli Quadri
Efficient Performance Based Design Using Parallel and Cloud Computing by C.E. Ventura and A. Bebamzadeh
NGA-West2 Research Program by Yousef Bozorgnia
City of Los Angeles Peer Review Process by Colin Kumabe
Seismic Performance of Shear Wall Buildings with Gravity-Induced Lateral Demands by Michael Dupuis, Tyler Best, Ken Elwood, and Don Anderson
Issues with the Peer Review Process by Farzad Naeim
Design of a 35 Story Building In Los Angeles Using the LADBS Performance Based Design Methodology
Large-Scale Testing of Steel Reinforced Concrete (SRC) Coupling Beams by Christopher J. Motter, John W. Wallace, Ron Klemencic, John Hooper, and Dave Fields
Structural Mitigation for Seismically Induced Permanent Ground Displacement by Craig D. Comartin
Nonlinear Response-History Analysis for the Design of New Buildings - A Proposed Updated to ASCE7 Chapter 16 by Curt B. Haselton
Seismic Design of Reinforced Concrete Mat Foundations by Ron Klemencic
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