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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
One important aspect of performance-based earthquake engineering is developing structural models that can accurately capture key characteristics of dynamic responses up to structural collapse. This in turns requires the solution algorithm be capable of
John(Jack) R. Hayes Jr., Steven McCabe, Michael Mahoney
Executive Order 13717 signed by President Obama on 2-2-2016 required NIST to draft Implementation Guidelines for Federal agencies to implement the requirements of the EO. This document provides suggested approaches for agencies to address the EO
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
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
Raul Uribe, Siamak Sattar, Matthew Speicher, Luis Ibarra
This paper quantifies the impact of using different ground motion selection methods to evaluate the seismic performance of steel special moment frames. Two methods are investigated: a "traditional" approach, herein referred to as the PEER method, and a
Performance-based standards use plastic rotation as an important measure to determine whether the response meets the acceptance criteria for moment-resisting frames. Since plastic rotation is the key parameter in performance-based seismic engineering, the
Nonlinear methods of seismic analysis have been gaining acceptance by practicing engineers as a useful way of assessing and improving the seismic performance of structures in which the nonlinear behavior of components of the structural model is captured in
This paper presents the results of a collapse prevention seismic performance assessment using ASCE 41-06 for six special concentrically braced frames designed in accordance with the 2012 International Building Code. The correlation between ASCE 7-10 and
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
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
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
This paper presents the results of a seismic performance assessment using ASCE 41-06 for six eccentrically braced frames (EBFs) designed in accordance with the 2012 International Building Code. The correlation between ASCE 7-10 and ASCE 41-06 is
Although simple shear connections are typically idealized as perfectly pinned, the actual resistance of the gravity framing system to flexural and axial loads can be critical in evaluating the robustness and stability of steel buildings subjected to
Ryan A. Kersting, Walterio A. Lopez, Larry A. Fahnestock
Buckling-Restrained Braced Frames (BRBFs) are one of the newer types of seismic force-resisting systems used in modern building designs. This Guide addresses the seismic design of steel BRBFs in typical building applications within regions of moderate to
The anticipated performance of a 4-story reinforced concrete (RC) building designed in accordance with ASCE/SEI 7, is assessed using ASCE/SEI 41. Engineering practitioners employing the performance-based seismic engineering philosophy are increasingly
The traditional method of structural analysis with geometric nonlinearity uses a small displacement theory with the linearized method of geometric stiffness or the approximate method of P-Δ stiffness to capture the reduction in stiffness due to axial