POSTTENSIONED TRUSSES - RELIABILITY AND REDUNDANCY

被引：11

作者：

AYYUB, BM

IBRAHIM, A

机构：

[1] Dept. of Civ. Engrg., Univ. of Maryland, College Park, MD

[2] Dept. of Civ. Engrg., Univ. of Maryland, College Park, MD

来源：

JOURNAL OF STRUCTURAL ENGINEERING-ASCE | 1990年 / 116卷 / 06期

关键词：

D O I：

10.1061/(ASCE)0733-9445(1990)116:6(1507)

中图分类号：

TU [建筑科学];

学科分类号：

0813 ;

摘要：

This study demonstrates the potential of posttensioning truss bridges Posttensioning deficient truss bridges using different posttensioning tendon layouts can be a cost-effective method to strengthen them and to increase the redundancy levels as well as the reliability of the truss structures to meet current and future loading and traffic requirements Methods for the assessment of the reliability and redundancy of posttensioned trusses are suggested The effect of posttensioning on the structural strength of the individual components and the overall system of trussesis investigated Posttensioning enlarges the elastic range increases the fatigue resistance redundancy and relibility and reduces deflection and member stresses Thus the remaining life of a truss bridge can be extended relatively inexpensively. © ASCE.

引用

页码：1507 / 1521

页数：15

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