传统抗震加固技术与抗震加固新技术的介绍

我国抗震加固的研究工作始于上世纪60年代,唐山地震后,开始在全国范围内进行建筑结构的抗震加固工作,并进行了大量的试验研究。早期砖混结构以圈梁构造柱和砖墙的钢筋网砂浆面层加固为主。目前,砖混结构则多采用混凝土板墙加固方法,另外碳纤维加固法和高强不锈钢绞线加固法也应用于砖墙的强度加固。混凝土结构的加固方法主要有加大截面加固法、外包钢加固法、转换体系加固法、黏钢加固法和黏碳纤维加固法。本世纪初消能减震技术开始逐渐应用于混凝土框架结构的抗震加固。随着高强不锈钢绞线 高强聚合物砂浆加固技术的研究成熟,越来越多的结构采用该方法进行加固。

Reviews on Seismic Strengthening of Existing Structures in Our Country

Research work on seismic strengthening began in the 1960s.After Tang Shan earthquake,nationwide work on seismic strengthening of building began and a lot of experiment study is carried out.Early masonry-concrete structure strengthening methods mainly fastens on ring beam and construction column and masonry strengthening with plaster splity.At present strengthening of masonry-concrete structure mostly employ masonry strengthening with concrete splity method,stainless steel wire mesh and carbon fiber reinforced is also applied.With respect to reinforced concrete structure,the main seismic strengthening methods include cross-section enlarging,structure member strengthening with steel frame,structure system transferred,strengthened by boning steel and carbon fiber reinforced.At the beginning of this century energy dissipation technology has begun to be used in seismic strengthening of concrete frame structure.For stainless steel wire mesh and penetrative polymer mortar technology research is mature,more and more structures adopt the method.