底框磚房的底層地震剪力增大系數(shù)研究
張曉峰 程文瀼 鄭 備 樊德潤 黃慕貞 李柏年
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張曉峰 程文瀼 鄭 備 （東南大學(xué) 南京 210096）樊德潤 黃慕貞 李柏年 （江蘇省建筑設(shè)計研究院 南京 210008）
[提要] 通過10個算例，對按振型分解反應(yīng)譜法和彈性時程分析法所得的底層地震剪力值與按底部剪力法所得的值進行對比和分析，而后從統(tǒng)計意義上提出了隨第二層與第一層側(cè)移剛度比值而變化的底層地震剪力增大系數(shù)計算公式。
[關(guān)鍵詞] 底框磚房 底層地震剪力 增大系數(shù) 底部剪力法 彈性時程分析法Ten examples of the masonry buildings with R.C. framework bottom floor were calculated and analysed by the following three methods respectively, bottom shear force method, response specirum technique and elastic step by step integration. The bottom floor seismlc shear forces obtained by the three methocls were compared, and then the calculating formula for the amplifying coefficient of the bottom fkx)r seismic shear force was proposed.
Keywords: masonry building; R.C. framework; bottom floor, amplifying coefficient; seismic shear force; bottom shear force method
