两个盒式土壤钢结构的全尺寸模型测试,具有不同的皇冠和半径
Fei Wu1, Baodong Liu1, Weiming Sun1
1School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China.
Materials (Basel, Switzerland)
|April 27, 2024
概括
较小的冠状半径通过改善土壤-钢相互作用,减少应力和最大限度地减少变形来提高盒式土壤-钢结构 (BTSSSs) 的性能. 这项研究提供了一个修订后的公式,用于计算BTSSSs的曲时刻.
科学领域:
- 地质技术工程 地质技术工程
- 结构工程 结构工程
- 土木工程 土木工程是指土木工程.
背景情况:
- 与其他设计相比,盒式土壤钢结构 (BTSSS) 在横截面利用和覆盖深度方面具有优势.
- 皇冠和半径对BTSSS机械性能的影响仍然不够理解.
研究的目的:
- 调查皇冠和半径对BTSSSs机械行为的影响.
- 为了开发一个更准确的公式来计算在倒装过程中曲的时刻.
主要方法:
- 构建和测试两个具有不同半径的全尺寸BTSSS模型.
- 使用ABAQUS软件开发和验证2D有限元模型 (FEM).
- 对横截面几何参数对机械性能影响的分析.
主要成果:
- 较小的冠半径导致更强的土壤-钢相互作用,更均的应力分布,以及相对变形,曲时刻和地面压力的减少.
- 跨度和门高度显著影响BTSSSs的曲时刻和变形.
- 提出了曲时刻的修订计算公式,包括冠状和半径.
结论:
- 皇冠和半径是影响BTSSS结构性能的关键参数.
- 这些发现有助于改善BTSSS的设计实践,特别是与加拿大高速公路桥梁设计规范 (CHBDC) 相关.
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