加强使用FRP和CFM复合材料的非钢筋石墙壁的战略
1Department of Civil Engineering, Aksaray University, Aksaray, 68100, Turkey. tulinsandikci@aksaray.edu.tr.
Scientific reports
|August 2, 2025
概括
有环氧的碳纤维网 (CFM) 显著提高了非钢筋石墙的剪切强度和柔性. 这种创新的强化方法提高了地震性能,并减少了地震易发地区的结构脆弱性.
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:
- 非钢筋造 (URM) 墙壁,特别是石头造,易受地震带来的侧面负荷的影响,导致剪切故障.
- 对于URM墙壁的传统增强方法往往不足以抵御地震剪切力.
- 纤维增强聚合物 (FRP) 和碳纤维网 (CFM) 为加强URM结构提供了有前途的先进材料.
研究的目的:
- 为了研究用FRP和CFM加强的非钢筋石墙的飞机内剪切行为.
- 评估FRP和CFM材料的不同配置和应用方法的有效性.
- 确定最佳的强化技术,以提高URM墙壁的抗震性能.
主要方法:
- 一个参考非钢筋石头墙样本 (URM-1) 的建造.
- 将FRP材料 (水平和对角) 应用于两个表面上的两个标本.
- 用环氧或维修砂将CFM应用于两个表面上的两个标本.
- 对角压缩测试,以评估在平面上的剪切行为.
主要成果:
- 用碳纤维网 (CFM) 和环氧 (URM-5) 加强的样本表现出最显著的改善.
- URM-5显示最大负载能力,剪切应力,延展性和弹性刚度大幅增加.
- 使用环氧法进行的CFM有效地降低了墙壁的脆弱性,并在断裂时保持了结构完整性.
结论:
- 使用环氧碳纤维网 (CFM) 是一种高效的强化技术,用于防止剪切故障的非钢筋石材造墙壁.
- 这种方法显著提高了URM结构的抗震能力.
- 环氧CFM是一种创新的,优越的替代传统钢筋和其他经过测试的FRP/CFM配置.
相关概念视频
01:15Reinforced Brick Masonry
1.2K
Reinforced brick masonry is an advanced construction technique that enhances the structural integrity of brick walls by incorporating steel reinforcements. These reinforcements are either placed within the hollow cores of bricks or sandwiched between two layers of masonry, known as wythes, and are then secured in place with grout. Grout is a fluid mixture composed of Portland cement, aggregate, and water, providing the necessary bonding agent for the steel and brick.
To fortify brick walls...
To fortify brick walls...
1.2K
01:18Composite Masonry Walls
1.3K
Composite masonry walls combine multiple wythes of the same or different masonry materials to create a unified structure. These walls feature wythes that are bonded together either through mortar-filled collar joints, grouted spaces, or more commonly, with rigid metal ties and reinforcements, with the use of masonry header units being rare. Metal ties are preferred because they effectively minimize water penetration, as these walls primarily absorb moisture and then release it into the...
1.3K
01:22Fiber Reinforced Concrete
131
Fiber-reinforced concrete significantly enhances the structural and nonstructural properties of traditional concrete by incorporating fibers like steel, glass, and polymers. These fibers, varying from natural ones such as sisal and cellulose to manufactured ones like polypropylene and Kevlar, are mixed into hydraulic cement with aggregates. Steel fibers, often preferred for their robustness, contribute to improved ductility, toughness, and post-cracking performance. The concrete is classified...
131
01:15Posttensioned Masonry Walls
201
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...
201
01:16Masonry Loadbearing Walls
160
Masonry load-bearing walls, constructed from materials like brick, stone, or concrete masonry units, serve as a crucial component in building structures by supporting the loads from floors and roofs and transferring them to the foundation. These walls, known for their compressive strength, can be reinforced or unreinforced to suit different building needs, accommodating both the dead and live loads while maintaining safety through lower working stresses compared to the materials' ultimate...
160
01:20Masonry Curtain Walls
1.2K
Masonry curtain walls employ brick or stone veneers supported by the building's structure to form an external cladding system that is both aesthetically appealing and functional. These walls are erected through two principal techniques, first by traditional layering of masonry units and second by using prefabricated panels. Traditional construction relies on steel shelf angles attached to the spandrel beam for support, with high-bond mortars ensuring secure attachment of masonry veneer...
1.2K