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Finite element analysis of reinforced concrete bridge pier subjected to seismic loading

机译:地震作用下钢筋混凝土桥墩的有限元分析

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The evaluation of the damage caused by seismic action, to existing bridges has received an important attention in recent years, because it is the first step towards reducing casualties and economic losses. All reinforced concrete bridges in Iraq which have been constructed were designed by outdated building codes that did not account for large seismic activities and were designed with typical transverse reinforcement spacing that far exceed today's standards and are therefore insufficient to resist the laterally applied loads. The evaluation of the damage caused by earthquakes in existing bridges became necessary in Iraq especially after the huge earthquakes in the neighbor countries such as Bam earthquake in Iran on 26 December 2003 with a magnitude Mw= 6.6 and Van Earthquake in Turkey on 23 October 2011 with a magnitude Mw=7.2. Therefore, this finite element analysis will involve modeling a typical scaled version of a reinforced concrete bridge pier that is usually being used in typical bridges in Iraq. The pier will have a vertical load applied at the top to simulate the dead loads of the superstructure and will also be subjected to seismic loading. The main objective of this study is to investigate the damage in the typical reinforced concrete bridge pier under seismic loads of intensity same as that happened in the area around Iraq and see whether it will support such an earthquake or not.
机译:近年来,对地震作用对现有桥梁造成的破坏进行评估的研究受到了广泛关注,因为这是减少人员伤亡和经济损失的第一步。伊拉克建造的所有钢筋混凝土桥梁都是根据过时的建筑规范设计的,该规范没有考虑到大地震活动,并且设计的典型横向钢筋间距远远超过了当今的标准,因此不足以抵抗横向施加的载荷。在伊拉克,有必要对现有桥梁地震造成的损坏进行评估,尤其是在邻国发生大地震之后,例如2003年12月26日伊朗的班姆地震和Mw = 6.6级地震以及2011年10月23日在土耳其的范范地震造成的大小Mw = 7.2。因此,这种有限元分析将涉及对钢筋混凝土桥墩的典型比例模型进行建模,该模型通常在伊拉克的典型桥梁中使用。桥墩将在顶部施加垂直载荷,以模拟上部结构的静载荷,并且还将承受地震载荷。这项研究的主要目的是研究在与伊拉克周围地区相同强度的地震荷载下典型钢筋混凝土桥墩的破坏情况,并观察它是否会支持这种地震。

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