Notes/Preview

INSTRUCTIONS: View the recorded webinar. Complete 10-question quiz with a score of 80% or higher to receive a certificate for 0.10 CEU (equivalent to 1.0 PDH).

Continuing Education Credit: 0.10 CEU (1.0 PDH)

Approved AIA and ICC

Access Period: 30 days

Description

This is a recorded webinar from October 17.

Direct displacement-based design is a seismic design approach that is a replacement for traditional force-based design methods. Direct displacement-based method for seismic design is based on the performance and the expected deformation of an element rather than its strength. The seismic demands in this method are displacements, which are considered proper quantities to describe the performance of an element under a seismic event, particularly when the element is resisting the induced forces in the inelastic range of response. This webinar will discuss the direct displacement-based seismic design (DDBD) of concrete structures, and its role in performance-based seismic design. The webinar will start with a motivation as to why force-based design methods are less suitable for earthquake engineering. This will be followed by a discussion of the fundamentals of DDBD as applied to simple systems, such as a bridge pier wall, and its extension to more complex structures such as multi-story concrete moment frames and wall buildings as well as multi-span bridges. The webinar will conclude with a discussion on a path forward to implement direct-displacement-based design methods as a preferable method, including possible inclusion into various design standards.

Document Details

Author: Mervyn Kowalsky

Publication Year: 2023

ISBN:

Categories: Design, Seismic & Lateral Forces

Formats: Online Learning

Table of Contents

Learning Objectives:

1. Explain differences between force-based design method and direct displacement-based design (DDBD) method in performing seismic analysis and design for multi-story and other structures.

2. Discuss the fundamentals of direct displacement-based design (DDBD) such that they may apply it to simple systems, such as bridge pier walls

3. Describe how to extend DDBD to more complex systems such as multi-story concrete moment frames and multi-span bridges in high seismic regions.

4. Define a path forward whereby DDBD can be deployed as a design method in national building standards for performance-based earthquake engineering.

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