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Behaviour of corrugated steel plate bridge with high soil cover under seismic excitation

机译:地震激励下高土层波纹钢板桥的受力特性

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The design codes and calculation methods related to the corrugated steel plate (CSP) bridges and culverts say only on the minimum soil height. This value is connected with the bridge span and shell height. In the case of static and dynamic loads (like passing the vehicles), such approach seems to be reasonable. However, it is important to know how the CSP bridges with high the soil covers behave under the seismic loads. This paper is presented the result of numerical study of CSP bridge with different high cover under seismic excitation. The analysed CSP railway bridge in the cross section has two closed pipe-arches. The span of shells is 4.40 m and the height of shells is 2.80 m. The load-carrying structure was constructed as two shells assembled from CSP sheets, designed with a depth of 0.05 m, pitch of 0.15 m, and plate thickness of 0.003 m. The real soil cover depth over the CSP structure (including ballast, blanket and backfill) equals 2.40 m. In this study two heights of soil cover were analysed (2.40 m and 5.00 m). Numerical analysis was conducted using the DIANA program based on finite element method (FEM). A linear model with El Centro records and Time History was used to analyse the problem.
机译:与瓦楞钢板(CSP)桥涵有关的设计规范和计算方法仅在最小土壤高度上说。该值与桥的跨度和壳体高度有关。对于静态和动态负载(例如通过车辆),这种方法似乎是合理的。但是,重要的是要了解具有高土壤覆盖率的CSP桥在地震荷载下的性能。介绍了地震作用下不同高覆盖率的CSP桥梁的数值研究结果。所分析的CSP铁路桥梁的横截面具有两个闭合的管拱。炮弹跨度为4.40 m,炮弹高度为2.80 m。承载结构构造为由CSP板组装而成的两个壳体,设计深度为0.05 m,间距为0.15 m,板厚为0.003 m。 CSP结构(包括压载物,覆盖层和回填物)上的实际土壤覆盖深度等于2.40 m。在这项研究中,分析了两个土壤覆盖高度(2.40 m和5.00 m)。使用基于有限元方法(FEM)的DIANA程序进行了数值分析。使用带有El Centro记录和时间历史记录的线性模型来分析问题。

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