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Life-cycle cost assessment of conventional and hybrid sliding-rocking bridges in seismic areas
Structure and Infrastructure Engineering ( IF 3.7 ) Pub Date : 2020-06-13 , DOI: 10.1080/15732479.2020.1766514
Jakub Valigura 1 , Abbie B. Liel 2 , Petros Sideris 3
Affiliation  

Abstract

This article investigates the impacts of the column system on bridge life-cycle costs in high seismic areas. It focuses on hybrid sliding-rocking (HSR) columns, which are an accelerated bridge construction (ABC) technology. The authors conduct a life-cycle cost assessment, quantifying costs of bridge construction and potential earthquake damage and subsequent repairs, as well as the cost of bridge closure time due to construction or repairs. Two prototypical modern seismically designed bridges are considered, each designed with both conventional reinforced concrete (RC) and HSR columns. Construction costs of HSR columns are higher. However, drift demands on the HSR columns are generally lower, damage is less severe and costs of repairing the columns are greatly reduced. Moreover, construction times are about 80% quicker for HSR columns, and repair times are reduced relative to conventional construction. The results suggest substantial advantages to the HSR column system, reducing construction time and expected costs and time for seismic repairs sufficiently to counteract the increase in upfront construction costs. The benefits of the HSR, and by extension other ABC column systems, are particularly significant for highly trafficked bridges in high seismic areas, but hold for a wide range of input assumptions.



中文翻译:

地震地区常规和混合滑移桥梁的生命周期成本评估

摘要

本文研究了高地震地区柱系统对桥梁生命周期成本的影响。它着重于混合滑动摇摆式(HSR)立柱,这是一种加速桥构造(ABC)技术。作者进行了生命周期成本评估,量化了桥梁建造和潜在的地震破坏以及后续维修的成本,以及由于建造或维修而造成的桥梁关闭时间的成本。考虑了两座现代抗震设计的原型桥梁,每座桥梁均采用传统的钢筋混凝土(RC)和HSR柱进行设计。高铁柱的建设成本较高。但是,对HSR色谱柱的漂移要求通常较低,损坏不太严重,并且大大降低了维修色谱柱的成本。此外,高铁柱的建造时间缩短了约80%,与传统结构相比,减少了维修时间。结果表明,高铁柱系统具有显着优势,可减少建设时间和预期成本,并能充分进行地震修复的时间,以抵消前期建设成本的增加。高铁和其他ABC圆柱系统的优势,对于高地震地区中交通繁忙的桥梁特别重要,但对于各种输入假设均成立。

更新日期:2020-06-13
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