Advanced Prestressed Concrete Part 4: Design of Axially Loaded Members (Compression + Bending)-Advanced Precast, Prestressed Concrete Module 4: Compression+Bending

Advanced Precast, Prestressed Concrete Module 4: Compression+Bending

Pdf Summary

This document provides an overview of an advanced prestressed concrete design course. The course covers various topics related to the design of prestressed concrete structures. The sessions include an introduction to building examples and torsion design, ledge design, bearing on concrete and dapped end design, design of axially loaded members (compression + bending), corbel design, and special topics.<br /><br />One of the key topics covered in the course is the concept of P-M interaction diagrams, which represent the strength envelope of a compression member subjected to axial load and moment. The construction of these diagrams is based on assumed material strengths and simplifications on material models.<br /><br />The course also emphasizes the importance of considering slenderness effects in compression members. Slenderness can significantly affect the axial load capacity of columns, and two approaches endorsed by ACI 318-14 are presented to account for slenderness effects: elastic second-order analysis and moment magnification. The moment magnifier method involves amplifying the end moments computed from a first-order analysis to indirectly account for second-order effects.<br /><br />The document includes examples of interaction diagrams, calculation procedures for determining points in the P-M interaction diagram, and details on the moment magnifier approach for both non-sway and sway frames.<br /><br />In addition, the document provides design examples for a gravity wall segment, including calculations for axial load, moments, effective length factors, and magnification factors. The design examples demonstrate the application of the concepts and methods discussed in the course.<br /><br />The course provides a comprehensive understanding of advanced prestressed concrete design principles, including the construction of P-M interaction diagrams and the consideration of slenderness effects. It equips participants with the knowledge and skills necessary to design safe and efficient concrete structures.

Keywords

advanced prestressed concrete design

prestressed concrete structures

torsion design

axially loaded members

corbel design

P-M interaction diagrams

slenderness effects

moment magnification

interaction diagrams

gravity wall segment