英语翻译2.2.StructureBridges employed in this paper are rectangular concrete slabs.Only decks are modelled so abutments and piers are considered by setting the appropriate support conditions in the slab models.Rigid supports along the whole bridg

英语翻译2.2.StructureBridges employed in this paper are rectangular concrete slabs.Only decks are modelled so abutments and piers are considered by setting the appropriate support conditions in the slab models.Rigid supports along the whole bridg
英语翻译
2.2.Structure
Bridges employed in this paper are rectangular concrete slabs.Only decks are modelled so abutments and piers are considered by setting the appropriate support conditions in the slab models.Rigid supports along the whole bridge width are considered at their two ends.For multi-span continuous bridges intermediate supports orthogonal to the free edges are added.As vertical bridge dynamic behaviour is being studied,only the flexibility of supports in this direction is significant.Vertical displacements at abutments and piers have a very small influence so they are considered negligible as in similar works [1,7].These structures are modelled by means of the Finite Element Method.Four-node shell elements
with reduced integration and six degrees of freedom per node are used to represent these slabs.Concrete is assumed to have a linear elastic behaviour and Rayleigh damping is employed for all
bridges in this study.Further information regarding both bridges is given below.

英语翻译2.2.StructureBridges employed in this paper are rectangular concrete slabs.Only decks are modelled so abutments and piers are considered by setting the appropriate support conditions in the slab models.Rigid supports along the whole bridg
2.2.结构
在本文中采用的桥梁是矩形混凝土板.只有桥面被建模,因此,使桥台和桥墩是通过在桥板模型中设置合适的支撑条件来考虑的.沿着整个桥宽的刚性支撑被认为在他们的两端.对于多跨连续梁桥来说,加入垂直于自由边缘的中间支点.因为我们正在研究的是桥的垂直的动态行为,所以只有支架在此方向上的灵活性（柔软性）是有意义的.在桥台和桥墩处的垂直位移只有很小的影响,因此它们在同类研究中[1,7]被认为可以忽略不计.这些结构用有限元法进行建模.我们采用具有降阶积分和每个节点6个自由度的四节点壳元素来表示这些桥板.假设混凝土具有线性弹性行为,并采用瑞利阻尼用于本研究的所有桥梁.关于两种桥梁的进一步的信息如下.

结构
　　桥梁采用摘要矩形混凝土板。只有甲板造成桥墩模型,被认为是通过设置适当的支持条件板模型。刚一起支持整个桥梁宽度被认为是在两端。对于多跨连续桥梁中间支持正交自由边缘。以垂直桥动态行为研究,只支持在这个方向的灵活性是重要的。...

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结构
　　桥梁采用摘要矩形混凝土板。只有甲板造成桥墩模型,被认为是通过设置适当的支持条件板模型。刚一起支持整个桥梁宽度被认为是在两端。对于多跨连续桥梁中间支持正交自由边缘。以垂直桥动态行为研究,只支持在这个方向的灵活性是重要的。

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