Optimum span length for a PCI-girder expressway bridge

IF 1.6 Q3 ENGINEERING, CIVIL Australian Journal of Civil Engineering Pub Date : 2020-07-21 DOI:10.1080/14488353.2020.1794298
N. Amatya, N. Anwar
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引用次数: 1

Abstract

ABSTRACT In the design of PCI-girder bridges, the application of various optimum design methodologies can result in significant cost savings and improved structural performance. However, most of the optimisation techniques focus on the individual components and the overall structural system of the superstructure of the bridge system. Limited studies are carried out in the context of longitudinal and transverse configurations of the members in a particular bridge system. This study identifies the optimum span for the PCI-girder expressway bridge system by adopting longitudinal and transverse arrangement of members as design variables while keeping the cross-section of the girder constant. Using an existing case study bridge structure located in Bangkok, selected parametric studies are carried out to achieve cost optimisation. It is observed that the optimum span range for the PCI-girder bridge is in the range of 25 m (82 ft) to 33 m (108 ft).
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某pci主梁高速公路桥梁的最佳跨长
在pci梁桥的设计中,各种优化设计方法的应用可以显著节省成本并改善结构性能。然而,大多数优化技术都集中在桥梁系统上部结构的单个部件和整体结构系统上。有限的研究是在特定桥梁体系中构件的纵向和横向配置的背景下进行的。在保持主梁截面不变的情况下,以构件纵、横布置为设计变量,确定了pci -主梁高速公路桥梁体系的最佳跨距。利用位于曼谷的现有桥梁结构案例研究,进行了选定的参数研究,以实现成本优化。据观察,pci梁桥的最佳跨度范围为25米(82英尺)至33米(108英尺)。
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CiteScore
3.90
自引率
7.70%
发文量
31
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