创新型交叉形SRC柱-RC薄板连接:对穿孔切削行为进行实验性调查和有限元分析
Wei Zhang1, Jianyang Xue2,3, Jinjun Xu4
1School of Energy and Architecture, Xihang University, Xi'an 710077, China.
Materials (Basel, Switzerland)
|July 12, 2025
概括
这项研究引入了一种新型的交叉形钢筋混凝土 (SRC) 柱板连接,以防止脆性穿孔切割故障. 该研究验证了有限元模型并分析了关键参数,为更安全的结构提供了设计见解.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
- 土木工程 土木工程是指土木工程.
背景情况:
- 平板板结构是常见的,但容易发生脆弱的穿孔切割故障在连接.
- 这种故障模式在现代建筑中提出了重大的安全和设计挑战.
研究的目的:
- 提出和研究一个创新的交叉形钢筋混凝土 (SRC) 柱子板连接.
- 分析这种新型连接的故障机制和性能控制原则.
- 为SRC柱板系统的设计和应用提供理论支持.
主要方法:
- 结合实验测试和数值分析,研究了SRC连接.
- 开发了一个精细的有限元模型,结合了材料的非线性,几何特征和接口效应.
- 该模型与实验结果进行了验证,显示不到3%的误差.
主要成果:
- 增加混凝土强度 (C30-C60) 提高了高达49%的穿孔剪切能力和33%的可塑性.
- 确定了关键的钢筋比率 (0.8-1.2%);超过它会增加12%的容量,但降低34%的可塑性.
- 调整剪切跨度深度比率 (3-6) 控制故障模式,减少24%的容量,同时增加133%的排位能力.
结论:
- 交叉形的SRC柱板连接有效地解决了穿孔剪切故障.
- 参数研究为优化这些连接的设计提供了关键的见解.
- 这些发现支持在建筑中采用这种新的结构系统.
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