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Bridge support elastic reactions under vertical earthquake ground motion

机译:竖向地震地震动下的桥梁支撑弹性反应

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摘要

In North America, bridges are not typically designed for vertical earthquake ground motion. Design codes, AASHTO in the USA and S6-06 in Canada, do not explicitly consider the effect of vertical earthquake ground motion in the design of highway bridges. However, analytical and field evidences have often drawn engineers' attention to the damage potential of vertical earthquake ground motion to engineered bridges. This paper proposes a simplified method to calculate elastic support reactions under vertical earthquake ground motion. Support reactions are first calculated by exact dynamic method. By applying a few assumptions, a simplified method has been developed. The developed method can be readily used in the design of typical bridges with regular span distribution. This simplified method has been demonstrated with several examples.
机译:在北美,桥梁通常不设计用于垂直地震地面运动。设计规范(美国的AASHTO和加拿大的S6-06)没有在公路桥梁的设计中明确考虑垂直地震地震动的影响。但是,分析和现场证据经常引起工程师的注意,即垂直地震地震动对工程桥梁的潜在破坏。本文提出了一种简化的方法来计算竖向地震地震动下的弹性支撑反作用力。首先通过精确动力学方法计算支持反应。通过应用一些假设,开发了一种简化的方法。所开发的方法可以容易地用于具有规则跨度分布的典型桥梁的设计中。已通过几个示例演示了此简化方法。

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