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張文芳 程文瀼 李愛群
（東南大學(xué) 南京 210096）[提要] 在水平地震作用下，多層砌體結(jié)構(gòu)一般只考慮層間墻體抗剪承載力和結(jié)構(gòu)整體傾覆等方面的問題，而地震傾覆力矩對層間墻體的影響，特別是彎曲影響卻很少研究。為此，提出一個(gè)新的計(jì)算模型，探討了砌體結(jié)構(gòu)在地震作用下的墻體內(nèi)力和承載力，特別是由地震彎矩引起的墻體大偏心受壓情況，并據(jù)此研究了地震傾覆力矩對墻體破壞的影響。傾覆力矩引起的墻體大偏心受壓是引起砌體結(jié)構(gòu)地震破壞的一個(gè)關(guān)鍵因素。
[關(guān)鍵詞] 砌體結(jié)構(gòu) 多層磚房 地震傾覆力矩 墻體 偏心受壓The internal force and the bearing capacity of masonry walls subjected to overturning moment under earthquake are studied, especially in the case of compression with large eccentricity caused by seismic bending moment in walls. The impact of earthquake overturning moment on structural failure is investigated. It is pointed out that the eccentric compression of masonry walls is an important factor leading to failure and collapse of masonry buildings.
Keywords: masonry structures; multistoried brick buildings; seismlc overturning moment; walls, eccentric compression
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