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首页> 外文期刊>Romanian Journal of Transport Infrastructure >Steel-Concrete Viaducts in the Orastie-Sibiu Highway: a Eurocode Compliant Project
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Steel-Concrete Viaducts in the Orastie-Sibiu Highway: a Eurocode Compliant Project

机译：Orastie-Sibiu公路上的钢混凝土高架桥：符合欧洲规范的项目

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摘要

This paper is intended to show the design of two composite bridges along the Orastie- Sibiu motorway, from the basic concepts, applied without the need for a clause-by- clause checking of codes and standards, to the construction methods. The bridges are seismically isolated in the longitudinal direction, while transversally the seismic action is distributed among the piers. Calculations have been carried out through state of the art procedures, taking into account form effect of the cross section. For this reason, different FE models have been set up to study different aspects of the behavior, with increasing degrees of approximation. For example, “beam” elements have been utilised to investigate global effects both in the linear and non linear range, while more accuate 2D and 3D elements have been used for refined cases such as stress checks and local buckling analyses. The present paper goes into detail in particular for what concerns some of the most interesting parts of the design process for the specific case. Namely, time dependent properties of the materials have been considered, and extensive “staged construction” analyses have been carried out to ensure safety in each phase of the complex life of the bridges, while at the same time guaranteeing significant cost savings.
机译：本文旨在展示沿Orastie-Sibiu高速公路的两座复合桥梁的设计，从基本概念到施工方法，这些基本概念适用于无需逐条检查代码和标准的情况。桥梁在纵向上是地震隔离的，而横向地震作用则分布在桥墩之间。考虑到横截面的形状影响，已经通过最先进的程序进行了计算。因此，已建立了不同的有限元模型来研究行为的不同方面，并且逼近程度越来越高。例如，“梁”元素已被用于研究线性和非线性范围内的整体效应，而更精确的2D和3D元素已被用于诸如应力检查和局部屈曲分析之类的精细情况。本文针对涉及特定情况的设计过程中最有趣的部分进行了详细介绍。即，考虑了材料的时间依赖性，并进行了广泛的“分阶段施工”分析，以确保桥梁复杂寿命的每个阶段的安全性，同时又保证了可观的成本节省。

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