Structural Performance of a Segmental Precast Arch System with Outrigger by Sectional Geometry of Structural Member
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pISSN 1226-7988, eISSN 1976-3808 www.springer.com/12205
DOI 10.1007/s12205-020-2030-x
Structural Engineering
Structural Performance of a Segmental Precast Arch System with Outrigger by Sectional Geometry of Structural Member Seok Hyeon Jeon
a
, Hak Joon Lee
a
, Jonghoon Moon
b
, Jungwon Huh
c
, and Jin-Hee Ahn
a
a
Member, Dept. of Civil Engineering, Gyeongnam National University of Science and Technology, Jinju 52725, Korea Member, Tekhan Inc., Seongnam 13524, Korea c Member, Dept. of Civil Engineering, Chonnam National University, Gwangju 61186, Korea b
ARTICLE HISTORY
ABSTRACT
Received 8 November 2019 Revised 1st 29 May 2020 Revised 2nd 24 June 2020 Accepted 7 July 2020 Published Online 21 September 2020
This study investigated the structural behavior of an arch system composed of segmental precast concrete panels and steel outrigger ribs, with respect to the cross-sectional geometries of the structural members. Thus, a three-dimensional finite element (3D FE) analysis of the proposed arch system was conducted at each construction step, and the cross-sectional geometries of the structural members were varied. From the results of the FE analysis regarding the structural-member cross-sectional configurations and geometries, the changes in stress and deformation were identified with respect to the changes in the thickness of the precast panels, thickness of the outrigger ribs, and height of the V-strip. Stresses and displacements of structural members in the proposed arch system were affected up to 48% by the height of the V-strip and the thickness of the outrigger ribs. The thickness of the precast panel affected relatively small on its structural behaviors. Therefore, the height of the V-strip and thickness of the outrigger ribs should be considered as the major design parameters for the design of the proposed arch system.
KEYWORDS Segmental precast panel arch system with outrigger Structural performance Arch system Cross-sectional geometries Finite element analysis
1. Introduction Precast concrete or stone arch systems have been used in construction because of their structural and aesthetic advantages (Heyman, 1982; Block, 2005; Block et al., 2006). Recently, various arch systems or arch structures have been suggested, including a precast arch bridge (PAB), tech span, and module arch etc. (Bernini, 2001; Gupta et al., 2005, Gupta et al., 2008; Tan et al., 2014; Ong et al., 2015). The structural safety of a precast concrete or stone arch bridge is determined by its compressive strength, which enables it to withstand the applied static loads and external forces, depending on the shape of the arch structure (Heyman, 1982; Collings, 2005). However, during construction, given the small axial force in the arch generated as a result of the weight of the structural members and the external forces exerted by the construction load, which tend to act unevenly on the arch structure, temporary construction materials are typically used. The temporary construction or equipment required for the construction o
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