在轴承负载下的全尺寸UHPC填充钢管复合柱的机械性能
Baoquan Cheng1, Weichen Wang2, Junhua Li2
1School of Civil Engineering, Central South University, Changsha 410083, China.
这项研究分析了全尺寸的UHPC填充钢管复合体柱 (FUCFSTCs),以了解其机械性能. 这些发现为轴向压缩能力提供了一个新的公式,这对于实际的工程应用至关重要.
科学领域:
- 土木工程 土木工程是指土木工程.
- 材料科学 材料科学 材料科学
- 结构工程 结构工程
背景情况:
- 超高性能混凝土填充钢管复合体柱 (UCFSTC) 提供高强度和耐用性.
- 现有的UCFSTC研究仅限于规模缩小的标本,这阻碍了对全面性能的理解.
研究的目的:
- 研究全尺寸UHPC填充钢管复合柱 (FUCFSTC) 的机械性能.
- 分析设计参数对FUCFSTC业绩的影响.
- 为FUCFSTCs的轴向压缩极限承载能力开发一个准确的公式.
主要方法:
- 使用ABAQUS软件对21个FUCFSTC进行有限元分析.
- 材料和有限元模型与实验数据的验证 (最大误差6.54%).
- 关于钢管强度,厚度,混凝土强度,面积比和直径的参数研究.
主要成果:
- FUCFSTC的柔性系数始终在1.3左右.
- 横截面尺寸显著影响了承载能力,增加了高达145.90%的承载能力.
- 开发了一种经过验证的轴向压缩极限承载能力公式,最大误差为3.04%.
结论:
- 开发的公式符合FUCFSTC的工程准确性要求.
- 这项研究为FUCFSTC在土木工程中的实际应用提供了坚实的基础.
- 了解机械行为,故障模式和应力过程对于结构完整性至关重要.
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