Book Description

In September 2014, the Applied Technology Council (ATC) commenced a task order project under National Institute of Standards and Technology (NIST) Contract SB1341-13-CQ-0009 to develop guidance for nonlinear dynamic analysis (ATC-114 Project). The need for such guidance is identified as high-priority research and development topic (Proposed Research Initiative 6) in NIST GCR 14-917-27 report, Nonlinear Analysis Research and Development Program for Performance-Based Seismic Engineering (NIST, 2013), which outlines a research and development program for addressing the gap between state-of-the-art academic research and state-of-practice engineering applications for nonlinear structural analysis, analytical structural modeling, and computer simulation in support of performance-based seismic engineering. In addition, the NIST GCR 09-917-2 report, Research Required to Support Full Implementation of Performance-Based Seismic Design (NIST, 2009), also identified the need to improve analytical models for buildings and their components in near-collapse seismic loading. To help fill this gap, the ATC-114 Project developed a series of reports that provide general nonlinear modeling and nonlinear analysis guidance, as well as guidance specific to the following two structural systems: structural steel moment frames and reinforced concrete moment frames. This Part IIb report, referred to as Guidelines herein, provide practical guidance for nonlinear modeling and analysis specific to reinforced concrete moment-resisting frames and their components. It is a companion to Part I Guidelines (NIST, 2017) that provides general guidance on nonlinear analysis. Other Part II companion reports provide further details for selected system types.