Beta
270798

Geometrical Considerations of Arch Bridge Design

Article

Last updated: 23 Jan 2023

Subjects

-

Tags

Steel and Composite Structures

Abstract

Arch is nowadays the most popular type of bridges being suitable in mountainous areas as well as in flat terrains. Arches are sometimes above the deck and are called tied arch bowstring. Also, arches may be positioned completely under the deck which is supported on spandrel columns over arch ribs. The configuration of superior deck is particularly suitable for bridging large or deep valleys and canyons, while the bowstring with inferior deck may suit best large water ways of flat valley crossings. Arch geometry can be either circular, parabolic or inverted catenary and rarely elliptic, all with hinged or fixed end connections. Arch form can also be unusual or irregular geometry such as the Sheikh Zayed Bridge designed by the late Zaha Haddid in Abu Dhabi, U.A.E. Arch shape should be chosen to ensure that the arch is working predominately in compression, under permanent load. In all cases however, it is worthy to note that the bending moment and shear forces are hardly equal to zero due to permanent loading conditions, although the magnitude of these straining actions will be small even under asymmetric loading cases or support end conditions . This study investigates the optimum configuration of spandrel arch ribs and tied bowstring arch bridges. For a bridge of given material and a known span, there should exist an optimum geometry. Two steel arch bridges were analyzed and comparison made between the optimum geometric configurations during the in-service condition. The study provides useful data for bridge engineers while designing this type of bridges. An extensive parametric study has been conducted in order to arrive at some reliable conclusions.

DOI

10.21608/asge.2020.270798

Keywords

Tied arch, spandrel arch, hangers/suspenders, funicular/catenary shape

Volume

04

Article Issue

02

Related Issue

37709

Issue Date

2020-05-01

Receive Date

2022-11-21

Publish Date

2020-05-01

Page Start

109

Page End

112

Print ISSN

2785-9509

Online ISSN

2812-5142

Link

https://asge.journals.ekb.eg/article_270798.html

Detail API

https://asge.journals.ekb.eg/service?article_code=270798

Order

270,798

Type

Original Article

Type Code

2,140

Publication Type

Journal

Publication Title

International Journal of Advances in Structural and Geotechnical Engineering

Publication Link

https://asge.journals.ekb.eg/

MainTitle

-

Details

Type

Article

Created At

23 Jan 2023