在受部分压力负荷的混凝土支中使用钢网作为内部增强件
Sabry Fayed1, Mohamed Ghalla1, Ahmed Hamoda1
1Civil Engineering Department, Faculty of Engineering, Kafrelsheikh University, Kafrelsheikh, Egypt.
Scientific reports
|November 26, 2025
概括
钢网织物 (SMF) 强化显著提高了结构部件的混凝土承载强度和柔性. 这项研究表明,SMF可以将初始断裂应力增加高达180%,最终承载强度增加超过100%.
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:
- 当地承载负载需要在混凝土组件 (如和接头) 中安全传输负载.
- 了解局部应力下的具体行为对于结构完整性至关重要.
- 钢网织物 (SMF) 加强可以限制混凝土核心,以改善负载传输.
研究的目的:
- 研究在受局部承载负荷的混凝土块中内部钢网织物 (SMF) 加强的有效性.
- 分析SMF体积比,形状 (盒子,气) 和高度对混凝土轴承性能的影响.
- 评估故障机制,轴承应力滑动行为和关键强度参数.
主要方法:
- 造了15个混凝土块,内部装有SMF钢筋 (盒子和圆柱体形状).
- 用不同面积的钢板对样品施加局部承载负荷.
- 测量的参数包括初始断裂负荷,轴承强度,刚性,柔性和滑动.
主要成果:
- 与未经加强的对照组相比,SMF增强块的初始断裂应力比30-180%高.
- 最终轴承强度,滑动性和可塑性在盒式SMF钢筋中显著增加 (45-167%).
- 轴承刚度在很大程度上不受SMF增强的影响,而SMF高度的影响最小.
结论:
- 内部SMF钢筋有效地提高了在局部负载下混凝土元素的承载能力和柔性.
- 盒形SMF增强器在增强负载转移和防止过早故障方面特别有效.
- 进一步优化SMF设计可能会导致更坚固,更高效的混凝土结构部件.
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