剪刀撑水泥砂浆网薄层加固砌体墙体拟静力试验

主拉应力破坏是砌体结构在地震荷载作用下最常见的一种破坏形式,剪刀撑水泥砂浆网薄层加固法就是针对砌体结构抵抗主拉应力不足的一种加固方法。为了考察该方法加固砌体墙体的受力性能及加固效果,对6片砂浆强度不同、加固方法不同的墙体试件进行了拟静力试验。试验结果表明：剪刀撑水泥砂浆网薄层加固法能够明显提高砌体墙体的抗剪承载力;该方法更适合于加固砂浆强度较低的砌体墙体;采用该方法加固后的砌体墙体破坏形式以剪切滑移破坏为主;加固面层能够与原有墙体较好地共同工作。目前剪刀撑水泥砂浆网薄层加固法是一个崭新的课题,该拟静力试验给出的试验分析结果和建议可供相关研究和加固工程设计参考。

Quasi-static Test of Masonry Wall Strengthened with X-brace Ferrocement Laminate

The principal tensile stress failure is the most common form of destruction masonry structure under seismic load, and X-brace ferrocement laminate is a reinforcement method to address the masonry＇ s lack of resistance to the principal tensile stress. In order to understand the stress performance and reinforcing effects of masonry wall strengthened with X-brace ferrocement laminate, six masonry wall specimens are designed with mortar of different strength and different strengthening method and the quasi -static test to the specimen is carried out. The test proves that X-brace ferrocement laminate reinforcement method can significantly improve the shear capacity of the masonry wall; the reinforcement method is more suitable for the wall of mortar with low strength; the failure of masonry wall with reinforcement method is in the form of slide breaking of shearing; the reinforcement layer can work together well with the original wall. X-brace ferrocement laminate reinforcement method is a new subject and the quasi-static test analysis results may be a reference for engineering design.