在填充过程中对超跨土壤钢的结构反应的实证研究
1Faculty of Civil Engineering, Wroclaw University of Science and Technology, 27 Wybrzeże Stanisława Wyspiańskiego St., 50-370 Wrocław, Poland.
Materials (Basel, Switzerland)
|August 14, 2025
概括
欧洲最大的波纹钢土钢桥的实地调查揭示了设计方法的局限性. 瑞典设计方法 (SDM) 在关键填充阶段不准确地预测了内部力量,需要修订分析模型.
科学领域:
- 土木工程 土木工程是指土木工程.
- 结构工程 结构工程
- 地质技术工程 地质技术工程
背景情况:
- 大跨度波纹钢土钢结构越来越多地用于基础设施.
- 欧洲最大的单跨结构最近在波兰建成.
- 了解填充过程中的结构行为对于安全和设计至关重要.
研究的目的:
- 为了研究一个大跨度波纹钢土-钢的结构性行为.
- 将现场测量与瑞典设计方法 (SDM) 的预测进行比较.
- 为了确定当前的设计标准对这种结构的局限性.
主要方法:
- 在填充过程中对25.7米跨度的土壤钢弧结构进行现场监测.
- 使用34个电阻应变仪和一个地质激光系统来测量位移和应变.
- 将测量数据与SDM预测进行比较,重点关注冠状加载阶段.
主要成果:
- SDM显著高估了皇冠层面的内部力量 (曲时刻69%,轴向力152%).
- 在最终填充时,SDM低估了55%的曲时刻,但高估了90%的轴力.
- 测量到的结构性行为与SDM预测有很大差异.
结论:
- 当前的设计标准,特别是SDM,在准确预测大型土壤钢结构的行为方面存在局限性.
- 需要修订分析模型,以更好地代表结构性反应.
- 长期监测对于验证和改进设计方法至关重要.
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