LRFD Steel Design Using Advanced Analysis: 13 - Rilegato

Chen, W.F.; Kim, Seung-Eock

Rilegato

ISBN 10: 0849374324 ISBN 13: 9780849374326

Casa editrice: CRC Press, 1997

Riassunto

LRFD Steel Design Using Advanced Analysis uses practical advanced analysis to produce almost identical member sizes to those of the Load and Resistance Factor Design (LRFD) method. The main advantage of the advanced analysis method is that tedious and sometimes confusing separate member capacity checks encompassed by the AISC-LRFD specification equations are not necessary. Advanced analysis can sufficiently capture the limit state strength and stability of a structural system and its individual member directly.

While the use of elastic analysis is still the norm in engineering practice, a new generation of codes is expected to adopt the advanced analysis methodology in the near future, leading to significant savings in design effort. In recent years, the continued rapid development in computer hardware and software, coupled with an increased understanding of structural behavior, has made it feasible to adopt the advanced analysis techniques for design office use.

Drs. Chen and Kim, both experienced and respected engineers, contribute their expertise to this text, which is intended for both the graduate student and the practicing engineer. Previous knowledge of the subject is not necessary, but familiarity with methods of elastic analysis and conventional LRFD design is expected. The advanced analysis in the book is presented in a practical and simple manner, with attention directed to both analysis and design, emphasizing the direct use of the methods in engineering practice. This is a great introduction to an exciting new trend in structural engineering!

Su questo libro

Contenuti:

Trend Toward Advanced Analysis
Introduction
Design Formats
Allowable Stress Design (ASD)
Plastic Design (PD)
Load and Resistance Factor Design (LRFD)
Advanced Analysis/Design
AISC-LRFD Design Method
Overview of AISC-LRFD Design Equations
Column Curves
Beam-Column Interaction Equations
Effective Length Factor
Moment Amplification Factor
Illustrative Example 1: Two-Bay Unbraced Frame
Illustrative Example 2: Leaning Column Frame
Semi-Rigid Frames
Methods of Advanced Analyses
Plastic-Zone Method
Quasi-Plastic Hinge Method
Elastic-Plastic Hinge Method
Notional-Load Plastic-Hinge Method
Refined-Plastic Hinge Method
Why Advanced Analysis
Summary
Practical Advanced Analysis
Introduction
Key Factors Influencing Steel Frame Behavior
Gradual Yielding Associated with Flexure
Gradual Yielding Associated with Residual Stresses
Second-Order Effects
Geometric Imperfections
Connection Nonlinearity
Desirable Attributes for Practical Advanced Analysis
Second-Order Refined Plastic Hinge Analysis
Stability Functions Accounting for Second-Order Effect
Incremental Force-Displacement Relationship
Cross-Section Plastic Strength
Modification of Element Stiffness for the Presence of Plastic Hinges
Tangent Modulus Model Associated with Residual Stresses
Two-Surface Stiffness Degradation Model Associated with Flexure
Analysis of Semi-Rigid Frames
Types of Semi-Rigid Connections
Practical Modeling of Connections
Formulation of Initial Stiffness and Ultimate Moment Capacity
Empirical Equation for Shape Parameter
Practical Estimation of Three-Parameters Using Computer Program
Incremental Force-Displacement Relationship Accounting for Semi-Rigid Connections
Geometric Imperfection Methods
Explicit Imperfection Modeling Method
Equivalent Notional Load Method
Further Reduced Tangent Modulus Method
Numerical Implementation
Summary
Verifications
Introduction
Axially Loaded Columns
Isolated Beam-Columns
Mathematically Identical Columns
Rigidly Jointed Truss
Braced Frames
Sway Frames
Kanchanalai's Frames in Strong-Axis Bending
Kanchanalai's Frames in Weak-Axis Bending
Vogel's Frames
Special Frames
Braced Column with K-Factor Greater Than 1.0
Unbraced Frame with K-Factor Less Than 1.0
Semi-Rigid Frames
Displacement Characteristics
Comparison with Analytical Result
Comparison with Experimental Result
Summary
Analysis and Design Principles
Introduction
Design Format
Loads
Dead Load
Live Load
Highway Live Load
Impact Load
Wind Load
Earthquake Load
Snow Load
Rain Load
Load Combinations
Resistance Factors
Establishment of Structural System
Low-Rise Structures
Multistory Structures
Forms of Bracing
Other Design Considerations
Section Application
Preliminary Member Sizing
Approximate Analysis
Approximate Member Sizing
Modeling of Structural Members
Number of Elements for a Beam Subjected to Distributed Transverse Loads
Number of Elements for a Column Without Geometric Imperfections
Number of Elements for a Column with Geometric Imperfections
Modeling of Geometric Imperfection
Explicit Imperfection Modeling
Equivalent Notional Loads Modeling
Further Reduced Tangent Modulus Modeling
Load Application
Proportional Loading
Incremental Loading
Analysis
Load-Carrying Capacity
Serviceability Limits
Ductility Requirements
Compactness
Lateral Torsional Buckling
Adjustment of Member Sizes
Summary
Computer Program
Introduction
Program Overview
Nonlinear Analysis Routines
Organization of Computer Program
Hardware Requirements
Execution of Program
User's Manual
General Rules
Input Instructions
Example
Frame Configuration and Load Condition
Input Data Preparation
Program Execution
Output Interpretation
Modification of In-House Program
Stability Function
Cross-Section Plastic Strength
CRC Tangent Modulus
Parabolic Function
Geometric Imperfection
Semi-Rigid Connection
Summary
Design Examples
Introduction
Simple Structures
Three-Span Continuous Beam
Two-Story Column
Truss Structures
Roof Truss
Pratt Truss
Braced Frames
Simple Braced Frame
Braced Eight-Story Frame
Unbraced Frames
One-Story Two-Bay Frame
Leaning Column Frame
Two-Story Frame
Eight-Story Frame
Five-Bay Four-Story AISC Frame
Semi-Rigid Frames
Two-Story One-Bay Semi-Rigid Frame
Two-Story Four-Bay Semi-Rigid Frame
Summary
Index

Su questa edizione

• Editore: CRC Press
• Data di pubblicazione: 1997
• ISBN 10: 0849374324
• ISBN 13: 9780849374326
• Rilegatura: Copertina rigida
• Numero edizione: 1
• Numero di pagine: 464