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System-Level Structural Reliability of Bridges.

机译:桥梁的系统级结构可靠性。

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摘要

The purpose of this thesis is to demonstrate that two-girder or two-web structural systems can be employed to design efficient bridges with an adequate level of redundancy. The issue of redundancy in two-girder bridges is a constraint for the bridge designers in North America who want to take advantage of efficiency in this type of structural system. Therefore, behavior of two-girder or two-web structural systems after failure of one main load-carrying component is evaluated to validate their safety. A procedure is developed to perform system-level reliability analysis of bridges. This procedure is applied to two bridge concepts, a twin steel girder with composite deck slab and a concrete double-T girder with unbonded external tendons. The results show that twin steel girder bridges can be designed to fulfill the requirements of a redundant structure and the double-T girder with external unbonded tendons can be employed to develop a robust structural system.
机译:本文的目的是证明可以采用两梁或两腹板结构系统设计具有足够冗余度的高效桥梁。两梁桥的冗余问题对于希望在这种结构系统中利用效率的北美桥梁设计人员来说是一个限制。因此,评估了两个梁或两个腹板结构系统在一个主要承载部件失效后的行为,以验证其安全性。开发了一种程序来执行桥梁的系统级可靠性分析。此过程适用于两个桥梁概念:带有复合甲板板的双钢梁和具有未粘结外部筋的混凝土双T形梁。结果表明,可以设计双钢梁桥以满足冗余结构的要求,并且可以使用带有外部无粘结筋的双T梁来开发坚固的结构系统。

著录项

  • 作者

    Elhami Khorasani, Negar.;

  • 作者单位

    University of Toronto (Canada).;

  • 授予单位 University of Toronto (Canada).;
  • 学科 Engineering Civil.
  • 学位 M.A.Sc.
  • 年度 2010
  • 页码 216 p.
  • 总页数 216
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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