【摘要】 高延性纤维增强水泥基复合材料(ECC)是一种高强度、高韧性的生态建筑材料,在土木工程领域具有广泛的应用前景。为充分发挥ECC的韧性和良好的抗剪性能,该文提出一种采用ECC面层加固砖墙的方法,对2片未加固砖墙和2片ECC面层加固的砖墙进行了拟静力试验。试验结果表明:ECC面层与砖墙具有良好的粘结性能,采用ECC面层加固砖墙能有效限制墙体的开裂和破坏,提高砖砌体墙的延性和耗能能力,改善砖墙的剪切脆性破坏模式,提高墙体的损伤容限,减小砌体结构的震后加固费用。更多还原

【Abstract】 The engineered cementitious composite(ECC) is one of high strength,high toughness of ecological building materials,and it has broad application prospects in civil engineering.To develop the toughness and shear capacity of ECC,a new technique is proposed for strengthening brick walls with ECC splint.Two unreinforced brick walls and two brick walls with ECC splint were designed and the quasi-static tests were carried out.The results showed that: the bonding properties between the ECC splint and the brick wall are good.The ECC splint of strengthened brick walls can effectively limit the cracking and damage of the wall,and improve the ductility and energy dissipation capacity as well as the damage tolerance of the wall.It can also improve the brittle shear failure modes of brick wall and reduce the post-earthquake retrofit costs of masonry structures.更多还原