- 摘 要
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王 奇 （清華大學(xué)土木工程系 北京 100084）馬寶民 （清華大學(xué)建筑設(shè)計研究院 北京 100084）
[提要] 通過對5個工程實(shí)例的整體計算，討論了鋼筋混凝土現(xiàn)澆樓梯對框架、框架-剪力墻和剪力墻三種結(jié)構(gòu)形式整體剛度和構(gòu)件內(nèi)力的影響。結(jié)果表明，計入樓梯踏步板對框架結(jié)構(gòu)的白振周期、剛度分布及構(gòu)件內(nèi)力影響較大，對框-剪結(jié)構(gòu)有一定影響，對剪力墻結(jié)構(gòu)影響不大。
[關(guān)鍵詞] 樓梯 白振周期 構(gòu)件內(nèi)力 框架結(jié)構(gòu)框架-剪力墻結(jié)構(gòu) 剪力墻結(jié)構(gòu)The intention is to study the effect of cast-in-place stairs on the structural stiffness and internal forces of members through the analysis of five engineering cases including reinforced concrete frame, frame-shear wall and shear wall structural style. The result of the analysis shows that consideration of stairs in calculating greatly affects the natural period, stiffness distributing and internal forces of members in frame structure. The effect becomes light in frame-shear structure and can be ignored in shear wall structure.
Keywords: stair; natural period; internal forces; members; frame structure; frame-shear wall; shear wall
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