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首页> 外文期刊>Journal of Earthquake Engineering >A METHODOLOGY FOR SEISMIC VULNERABILITY OF MASONRY ARCH BRIDGE WALLS
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A METHODOLOGY FOR SEISMIC VULNERABILITY OF MASONRY ARCH BRIDGE WALLS

机译：砌体拱桥墙地震易损性的方法学

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Notwithstanding its potentially high level, the seismic vulnerability of masonry arch bridges has yet to be completely perceived, possibly due to the relatively scarce damage evidence collected after recent earthquakes. The dearth of research studies on this topic is thus one of the main motivations behind the current endeavour, which aims at a better understanding of the dynamic interaction between the arch walls and the filling material of typical masonry arch bridges, and the consequent susceptibility of the latter to out-of-plane collapse mechanisms. Within this framework, a numerical model for the evaluation of the seismic out-of-plane capacity of bridge walls, including the effects of the infill material, is proposed. This methodology can be subdivided into three main components; computation of static earth pressure, evaluation of dynamic soil thrust, assessment of out-of-plane capacity of a masonry wall. In addition, a congruent and relatively simple procedure for the estimation of the seismic demand on the arch wall is described. Finally, a parametric study is carried out with a view to appraise the seismic vulnerability associated to typical masonry arch bridge typologies.
机译：尽管其潜在的高水平，但由于人们在最近的地震后收集到的损坏证据相对较少，所以砌砖拱桥的地震脆弱性尚未得到完全认识。因此，缺乏对该主题的研究是当前努力的主要动力之一，其目的在于更好地理解典型砌体拱桥的拱壁与填充材料之间的动力相互作用以及随之而来的易感性。后者是面外崩溃机制。在此框架内，提出了一种用于评估桥梁墙面抗震能力的数值模型，其中包括填充材料的影响。该方法可以分为三个主要部分：计算静态土压力，评估动态土力，评估砌体墙的平面外承载力。另外，描述了用于估计拱壁上的地震需求的一致且相对简单的过程。最后，进行了参数研究，以评估与典型砌体拱桥类型相关的地震脆弱性。

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