00637836

Component

http://onlinepubs.trb.org...trr/1993/1393/1393-021.pdf

https://scholar.google.co...tley&publication_year=1993

A design algorithm is developed to incorporate design philosophy for seismic capacity in a computer program for the optimal design of single-column circular reinforced concrete bridge piers for seismic loading. The program designs the circular column as a single degree of freedom system under the combined effect of axial and lateral seismic loads over a broad range of axial load ratio, column height, and design displacement ductility capacity. For a given column height and axial load, results indicate the existence of an optimal column diameter and design displacement ductility level. As the column diameter is reduced, cost savings are effected by reduced volume of concrete but tend to be offset by P - delta effects, increased longitudinal reinforcement for flexure, and increased transverse reinforcement for confinement and shear. On the basis of common trends, solutions are provided for the most economical range of axial load ratio and design displacement ductility capacity for a given column height.

This paper appears in Transportation Research Record No. 1393, Structures. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

01403235

English

p. 186-192

1993

Transportation Research Record

0309054664

Figures (6) ; References (10) ; Tables (1)

Algorithms; Axial loads; Columns; Computer programs; Cost control; Design; Diameter; Dislocation (Geology); Ductility; Earthquake resistant design; Height; Optimization

Capacity; Cost savings

Bridges and other structures; Design; Highways; I24: Design of Bridges and Retaining Walls

TRIS, TRB, ATRI

Oct 15 1993 12:00AM

• BEARINGS IN STRUCTURAL SYSTEMS: ACTION AND REACTION
• BEHAVIOR OF PRESTRESSED AASHTO GIRDERS UNDER STATIC LOADING
• DECOMPOSED-COMPONENTS APPROACH TO SIGNAL-POLE BASE-PLATE DESIGN
• DESIGN ANOMALIES IN CONCRETE DECK-STEEL STRINGER BRIDGES
• ECONOMICAL STEEL BOX GIRDER BRIDGES
• EFFECT OF ALTERNATIVE TRUCK CONFIGURATIONS AND WEIGHTS ON THE FATIGUE LIFE OF BRIDGES
• EXPERIMENTAL PERFORMANCE AND MODELING STUDY OF A 30-YEAR-OLD BRIDGE WITH STEEL BEARINGS
• FATIGUE DESIGN OF WELDED ALUMINUM STRUCTURES
• FATIGUE LOAD SPECTRA FOR A STEEL GIRDER BRIDGE
• FREEZE-THAW STUDIES ON CONCRETE STRUCTURAL ELEMENTS
• IMPROVING THE QUALITY AND DURABILITY OF MODULAR BRIDGE EXPANSION JOINTS
• INTEGRAL BRIDGES: ATTRIBUTES AND LIMITATIONS
• NATURAL FREQUENCIES OF CONCRETE BRIDGES IN THE PACIFIC NORTHWEST
• RATIONAL WEATHER MODEL FOR HIGHWAY STRUCTURES
• SERVICE, FATIGUE, AND ULTIMATE LOAD EVALUATION OF A CONTINUOUS PRESTRESSED FLAT-SLAB BRIDGE SYSTEM
• STATIC LIVE LOAD TESTS ON A CABLE-STAYED BRIDGE
• STRUCTURAL IDENTIFICATION OF A STEEL STRINGER BRIDGE
• TESTING OF BRIDGE EXPANSION JOINTS BY LARGE-SCALE TESTING APPARATUS
• TESTS OF CONCRETE BRIDGE COLUMNS WITH INTERLOCKING SPIRAL REINFORCEMENT
• UPDATED ENVIRONMENTAL LIMITS FOR ALUMINIZED STEEL TYPE 2 PIPE APPLICATION
• VIBRATION AND IMPACT IN MULTIGIRDER STEEL BRIDGES