Seismic Design using Structural Dynamics (2000 IBC) – S.K. Ghosh (KEBT0015)

Seismic Design using Structural Dynamics (2000 IBC), CONTENTS:      

Chapter 1: Modal Response spectra Analysis: Background and Implementation

Tables, Chapter 1

Figures, Chapter 1

Chapter 2: Design of Reinforced Concrete Structures for Earthquake Forces

Tables, Chapter 2

Figures, Chapter 2

This publication addresses the two methods by which a designer may comply with the seismic design requirements of the 2000 international Building Code (IBC): Equivalent Lateral Force Procedure (IBC Section 1617.4) and Dynamic Analysis Procedure (IBC Section 1618). The Dynamic Analysis Procedure is more complicated and is required to be used under certain conditions of irregularity, occupancy, and height. Over the years, many ques¬tions have been asked about code provisions concerning the Dynamic Analysis Procedure; and this publication has been created to answer these questions and demystify the application of the code.

Seismic Design using Structural Dynamics (2000 IBC)

Although the 2000 IBC formally recognizes two dynamic analysis procedures: response spectrum analysis and time-history analysis; the response spectrum analysis is by far the more common and is the primary subject of this publication. The background and details are explained in the first half of this publication where a step-by-step analysis procedure is provided; and a three-story, one-bay frame example is solved manually to illustrate application of the procedure.

The second half of this publication is devoted exclusively to the detailed design of a 20-story reinforced concrete building that utilizes a dual shear wall-frame interactive system for earth-quake resistance. Response spectrum analysis is used as the basis of design. Design utilizing the equivalent lateral force procedure is also illustrated because it is basically a prerequisite to design using the dynamic analysis procedure.

A key feature of this 20-story design example that will be of particular interest to users is the design of reinforced concrete shear walls utilizing the procedure in the 1999 edition of ACI 318, Building Code Requirements for Structural Concrete; which is different from that in the prior editions of ACI318. Examples of reinforced concrete shear wall design using the ACI 318-99 procedure are not commonly available.