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汶川地震后,教育部要求各高校对在本次地震中受损的建筑进行抗震加固处理,某体育馆为其中一例。由于该体育馆为大跨度木屋架结构,不满足现行规范要求,故加固方案一度难以确定。经多次分析、论证、对比、抗震验算后,最终对原砖柱进行了外包钢筋混凝土加固,对墙进行了外包钢筋网加固,并用新建钢屋架代替了原木屋架。该体育馆经过加固改造,既符合了现行规范要求,又明显增强了原结构的抗震性能。
After the Wenchuan earthquake, the Ministry of Education asked colleges and universities to deal with the earthquake-proofing of buildings damaged in this earthquake. One gymnasium is one example. As the stadium is a large-span wooden truss structure, does not meet the requirements of the current norms, so the reinforcement program was difficult to determine. After repeated analysis, demonstration, comparison and seismic checking, the original brick columns were reinforced by outsourcing reinforced concrete, and the walls were reinforced with steel mesh reinforcement. The new steel truss was replaced by the original wooden truss. After the stadium has been reinforced and rebuilt, it not only meets the requirements of the existing codes but also significantly enhances the seismic performance of the original structure.