Numerical Models used for The Calculation of The Cable-Stayed Bridge at Km 0+540 over Danube-Black Sea Canal

IF 0.1 Q4 ENGINEERING, CIVIL Romanian Journal of Transport Infrastructure Pub Date : 2016-12-01 DOI:10.1515/rjti-2016-0047
C. Mutu, I. Răcănel
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Abstract

Abstract Cable-stayed bridges are complex structures and for their design, the traditional calculation methods are hard, even impossible to use for a global analysis. Separate analyses for the each component of the bridge in a simplified manner can be conducted, but in this case the concurrence of the elements into the structure is not taken into account, leading to errors in estimating the structural response. For these structures, the construction method and the presence of the stays, which are elements having a nonlinear behaviour, implies to consider a nonlinear staged analysis including the second order effects in order to transmit form one stage to the other the stress-strain state. In the present time, thanks to the evolution and development of the calculation methods and computer analysis, cable-stayed bridges can be accurate analysed so that the obtained response is close to the behaviour of the structure during erection and later, in service. The aim of this paper is to present the results obtained using one of the finite element models and nonlinear staged analysis of the bridge at km 0+540 over Danube-Black Sea Canal near Agigea. Inside the paper, results related to the evolution of stress-strain state in principal structural elements of the bridge - pylons, stays and deck - during the execution and in final stage, in service are to be presented.
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多瑙河-黑海运河0+540 Km斜拉桥计算的数值模型
斜拉桥是一种复杂的结构,对于斜拉桥的设计,传统的计算方法很难,甚至无法进行全局分析。可以以简化的方式对桥梁的每个组成部分进行单独分析,但在这种情况下,没有考虑到结构中各元素的协同作用,从而导致估计结构响应的误差。对于这些结构,作为具有非线性行为的构件,施工方法和拉索的存在意味着要考虑非线性阶段分析,包括二阶效应,以便将应力-应变状态从一个阶段传递到另一个阶段。目前,由于计算方法和计算机分析的演变和发展,斜拉桥可以进行精确的分析,从而得到的响应接近结构在安装和后期使用时的行为。本文的目的是介绍在Agigea附近的多瑙河-黑海运河上km 0+540处的桥梁的有限元模型和非线性阶段分析的结果。在本文中,有关的结果演变的主要结构元件-桥塔,拉索和甲板-在施工过程中,在最后阶段,在使用中。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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审稿时长
10 weeks
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