四川省中小学校舍抗震加固存在问题与对策

Seismic Reinforcement and Countermeasure of Primary and Middle School in Sichuan

汶川地震后,对四川部分地区的设防烈度进行了调整,使得四川地区校舍的抗震加固难度大幅度提高。基于中小学校舍抗震加固中存在的主要问题,提出主要部位的加固对策,包括混合加固体系、单跨框架、预制楼板、非结构构件等。同时以中小学加固实例,阐明加固的主要方法。结果表明,应首先考虑结构体系的合理性,优先加固竖向抗侧力构件。

The fortification intensity is adjusted in Sichuan after Wenchuan earthquake.Thus,the difficulties of seismic reinforcement are greatly enhanced about primary and middle school.Based on main problems in seismic reinforcement of primary and middle school,countermeasures of main part are outlined,such as complex reinforcement system,single-span frame,precast floor plate and non-structure member and so on.Taking some reinforcement in primary and middle school as examples,main methods are introduced.The results show that it should take the reasonability of structure into account at first,and choose prior reinforcement of vertical lateral resistant members.