第一篇：外廊式單跨框架教學(xué)樓加固設(shè)計(jì)及抗震性能研究

外廊式單跨框架教學(xué)樓加固設(shè)計(jì)及抗震性能研究

李紹祥

（廈門市建設(shè)工程施工圖審查所 廈門 361004）

［摘要］外廊式單跨框架教學(xué)樓是現(xiàn)有中小學(xué)教學(xué)樓結(jié)構(gòu)中常見的結(jié)構(gòu)體系，抗震加固時(shí)，由于乙類建筑不應(yīng)采用單跨框架，從施工工期和技術(shù)經(jīng)濟(jì)角度分析，采用在挑梁端部設(shè)柱方式改單跨框架為雙跨框架的加固方法，是一種簡單有效地加固方法。本文采用靜力彈塑性法及按實(shí)配鋼筋同時(shí)考慮樓板T形截面影響的彈塑性動(dòng)力時(shí)程分析法，對(duì)該類加固方法進(jìn)行研究，其研究成果可供中小學(xué)教學(xué)樓抗震加固設(shè)計(jì)時(shí)參考。

［關(guān)鍵詞］單跨框架；加固改造；雙跨框架；彈塑性動(dòng)力時(shí)程分析；抗震性能

Strengthening Design and Aseismatic Performance Research of exterior corridor type Single Span Frame School Bulding

Li Shao-xiang Abstract: Exterior corridor type single span framework buildings are very popular structure system in school buildings of middle and primary schools.Because the structure of single span framework should not be used in the building of B-class(important building), from the viewpoint of construction time and convenience of technique, in seismic-proof strengthening, it is a simple and effective method by changing structure to double span framework.In this paper this effective method is researched by elasto-plastic dynamic analysis of structure based on reinforcing bar of actual amount and meanwhile considering influence of the effective width of T-section of floor.Our result can be referenced in design of aseismatic strengthening for the buildings of middle and primary schools.Keywords: single span framework, strengthening and reconstruction, double span framework, elasto-plastic dynamic analysis of structure, aseismatic performance