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Resilience

Earthquake risk reduction

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Displaying 101 - 125 of 186

A Methodology for Estimating Seismic Retrofit Costs

September 28, 2017
Author(s)
Juan Fung, David Butry, Siamak Sattar, Steven McCabe
Presidential Executive Order 13717 (EO 13717), Establishing a Federal Earthquake Risk Management Standard, encourages federal agencies to "enhance resilience...[to] future earthquakes" by evaluating and retrofitting existing federal buildings based on

Behavior of post-installed anchors tested by stepwise increasing cyclic crack protocols

May 1, 2017
Author(s)
Christoph Mahrenholtz, Rolf Eligehausen, Tara C. Hutchinson, Matthew Hoehler
The American Concrete Institute (ACI) standards for qualification of post-installed concrete anchors (ACI 355.2 and ACI 355.4) include a nonseismic crack movement test characterized by a large number of small-amplitude crack cycles. This paper investigates

ASCE/SEI 41 Predicted Performance of Newly Designed BRBFs

January 8, 2017
Author(s)
Matthew Speicher, John Harris
Structural engineers in the United States have turned to performance-based design methodologies for design of new buildings in order to find improved design solutions as compared to those obtained using prescriptive design provisions of current model

EVALUATION OF STRUCTURAL PERFORMANCE BASED ON AN ENERGY BALANCE APPROACH

January 8, 2017
Author(s)
Kevin K F Wong, Steven McCabe
An analytical method is developed to investigate the potential energy of fully nonlinear framed structures and other energy characteristics due to earthquake ground motions. Since the potential energy relates to the stiffness of the structure, it consists

Loading Protocols for ASCE 41 Backbone Curves

November 1, 2016
Author(s)
Bruce F. Maison, Matthew Speicher
ASCE 41-13 is an industry standard for seismic evaluation and retrofit of existing buildings. Alternative component modeling and acceptance criteria are based on a backbone curve constructed from an envelope of component hysteresis loops derived via

Behavior of Post-installed Anchors Tested by Stepwise Increasing Cyclic Load Protocols

September 22, 2016
Author(s)
Philipp Mahrenholtz, Rolf Eligehausen, Tara C. Hutchinson, Matthew Hoehler
Cyclic loads are a characteristic feature of actions acting on structures and anchorages during earthquakes. For this reason, seismic qualification of post-installed concrete anchors according to the internationally recognized American Concrete Institute

Shake Table Testing of an Elevator System in a Full-Scale Five-Story Building

August 17, 2016
Author(s)
Xiang Wang, Tara C. Hutchinson, Rodrigo Astroza, Joel P. Conte, Jose I. Restrepo, Matthew Hoehler, Waldir Ribeiro
This paper investigates the seismic performance of a functional traction elevator as part of a full-scale five-story building shake table test program. The test building was subjected to a suite of earthquake input motions of increasing intensity, first
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