摘要
砌体结构是世界上最古老的结构形式之一,至今仍然应用广泛。然而由于砌体结构显著的脆性以及较差的整体性,在地震作用下砌体房屋容易发生严重的脆性破坏。传统的钢筋网水泥砂浆面层和增设圈梁和构造柱的加固方式施工复杂、造价较高且会破坏建筑物的原有风貌,因此近些年涌现出许多新的加固方法。文章从材料的角度出发,总结了高性能材料在砌体结构加固中的应用,主要包括高性能复合砂浆钢筋网(HPFL)、纤维增强复合材料(FRP)、纤维织物增强砂浆(TRM)、超高延性水泥基复合材料(ECC)。文章讨论了不同加固方法的特点以及加固后砌体结构的性能提升,并且重点分析了具有多缝开裂及应变强化特点的ECC材料加固砌体结构的效果。
Masonry building is one of the oldest structural forms in human history and is still widely used nowadays all over the world.However,brittleness in shear strength and poor integrity make masonry building vulnerable under earthquake impact.Since the traditional method for strengthening masonry building has various disadvantages,such as complicated construction,high cost and damage to the original building style,new technologies were extensively developed in recent years.This paper summarizes the research progress about using high performance materials in masonry building strengthening,including High Performance ferrocement Laminate(HPFL),Fibre Reinforced Plastics(FRP),Textile-reinforced mortar,Engineered Cementitious Composite(ECC).The details of different strengthening approaches are presented in this article,and the seismic performance of masonry buildings strengthened by different materials,especially ECC with strain hardening and multiple cracking characteristics is comparatively analyzed.
作者
余江滔
YU Jiang-tao(College of Civil Engineering,Tongji University,Shanghai 200092China)
出处
《江苏建筑》
2021年第S01期70-74,共5页
Jiangsu Construction
关键词
砌体结构加固
高性能材料
超高延性水泥基复合材料
strengthening masonry building
high performance materials
engineered cementitious composite
