基于有限元模拟的SMAF-ECC预制自中心框架连接的地震和自中心性能研究
Yan Cao1, Qing Wu2, Zhao Yang2
1College of Creative Design, Wuchang University of Technology, Wuhan 430223, China.
Materials (Basel, Switzerland)
|January 10, 2026
概括
本研究介绍了预制框架接头的形状记忆合金纤维 (SMAF) 工程水泥复合材料 (ECC),显著提高了地震性能和自我中心能力. 优化SMAF含量对于提高工业化建筑的弹性至关重要.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
- 地震工程是地震工程.
背景情况:
- 预制框架接头往往表现出较差的抗震性能,较大的残余位移,以及不充分的自中心化能力.
- 在工业化建筑中改善联合性能的现有解决方案缺乏全面的抗震能力和自我中心的功能.
研究的目的:
- 提出和评估一种使用形状记忆合金纤维 (SMAF) 工程混凝土复合材料 (ECC) 的新型自中心预制框架接头.
- 调查SMAF体积含量对拟议关节的地震性能和自我中心行为的影响.
主要方法:
- 使用ABAQUS.使用SMAF-ECC联合的经过验证的有限元模型 (FEM) 的开发.
- 对拟议的联合模型与传统钢筋混凝土 (RC) 和ECC增强 (RC-E) 联合模型进行比较分析.
- 参数研究探讨不同SMAF体积含量对关节性能的影响.
主要成果:
- 该SMAF-ECC复合材料显著提高了预制框架接头的地震和自中心能力.
- 与传统关节相比,残余位移显著减少,歇斯底里性行为得到优化.
- 确定了最佳的SMAF体积含量;过量导致纤维聚合和降低自我中心能力.
结论:
- 在联合核心区用SMAF-ECC取代传统混凝土,为提高抗震能力提供了一个可行的解决方案.
- 该研究为SMAF-ECC在预制结构中的应用奠定了基础,以提高地震安全.
- 优化SMAF内容对于最大限度地利用SMAF-ECC在结构应用中的好处至关重要.
相关概念视频
Unsymmetric Loading of Thin-Walled Members
406
Thin-walled members with non-symmetrical cross-sections are vital to engineering structures, offering material efficiency and structural integrity. However, unsymmetrical loading on these members leads to complex stress distributions, resulting in simultaneous bending and twisting can cause deformation or structural failure. The interaction between bending and twisting requires detailed analysis to ensure structural resilience.
The concept of the shear center is crucial in countering the...
The concept of the shear center is crucial in countering the...
406
Beams with Unsymmetric Loadings
397
Analyzing a supported beam under unsymmetrical loadings is essential in structural engineering to understand how beams respond to varied force distributions. This analysis involves calculating the deflection and identifying points where the slope of the beam is zero, which are crucial for ensuring structural stability and functionality.
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
The first moment-area theorem determines the slope at any point on the beam. This theorem indicates that the change in slope between two points on a beam...
397
Beams with Symmetric Loadings
378
The moment-area method is an analytical tool used in structural engineering to determine the slope and deflection of beams under various loads. Consider a cantilever with a concentrated load and moment at the free end. The first step is constructing a free-body diagram to calculate the reactions at the fixed end. Next, the bending moment diagram is plotted to visualize how the bending moment varies along the beam's length, focusing on points where the bending moment equals zero.
The M/EI...
The M/EI...
378
Frames: Problem Solving II
474
Consider a hydraulic hoist supporting a load of 1 kN. Assuming a simplified schematic representation of this frame structure, the force acting on BD and BF members can be determined.
474
Eccentric Axial Loading in a Plane of Symmetry
540
Eccentric axial loading occurs when an axial load is applied away from the centroidal axis of a structural member. This scenario is common in engineering, where structural elements may not be directly aligned due to various design or functional requirements.
540
Posttensioned Masonry Walls
450
Post-tensioned masonry walls use high-strength steel rods or flexible tendons to enhance the strength and efficiency of masonry structures. These elements are securely anchored to the foundation and extend vertically either within the cores of the masonry units or between the masonry wythes. The construction process involves building the wall with these tensioning elements in place and allowing the mortar to fully cure.
Following the curing process, the tensioning begins. Steel rods are...
450


