剪重比的本質(zhì)關(guān)系推導(dǎo)及其對(duì)長(zhǎng)周期超高層建筑的影響
廖耘，容柏生，李盛勇
- 摘 要
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廖耘，容柏生，李盛勇（廣州容柏生建筑結(jié)構(gòu)設(shè)計(jì)事務(wù)所， 廣州 510170）［摘要］通過對(duì)剪重比計(jì)算公式的化簡(jiǎn)，得出其與結(jié)構(gòu)各周期地震影響系數(shù)及振型參與質(zhì)量系數(shù)的本質(zhì)關(guān)系。以此為基礎(chǔ)，就質(zhì)量和剛度變化對(duì)長(zhǎng)周期超高層建筑剪重比的影響進(jìn)行有關(guān)論證，得出主要結(jié)論有：振型參與質(zhì)量系數(shù)對(duì)計(jì)算剪重比的影響，是有可能大于剛度和質(zhì)量對(duì)計(jì)算剪重比影響的；結(jié)構(gòu)計(jì)算剪重比偏小，并不簡(jiǎn)單意味著結(jié)構(gòu)剛度偏小或質(zhì)量偏大。［關(guān)鍵詞］剪重比； 長(zhǎng)周期； 超高層建筑； 振型參與質(zhì)量系數(shù)中圖分類號(hào)：TU973 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1002-848X(2013)05-0001-04Derivation of shear-gravity ratio and its effect on long-period super high-rise buildingsLiao Yun, Rong Baisheng, Li Shengyong(RBS Architecture Engineering Design Associates, Guangzhou 510170, China)Abstract: The formula of shear-gravity ratio was simplified, and its natural relationship with seismic influence coefficient and mode participation mass ratio was found out. Base on this, the effect on sheargravity ratio which caused by change of mass and stiffness was analyzed, and some conclusions were given. The effect on shear-gravity ratio which caused by mode participation mass ratio was larger than the effect which caused by change of mass and stiffness. Smaller shear-gravity ratio does not mean smaller stiffness or larger mass directly.Keywords: shear-gravity ratio; long period; super high-rise building; mode participation mass ratio作者簡(jiǎn)介：廖耘，碩士，高級(jí)工程師，一級(jí)注冊(cè)結(jié)構(gòu)工程師，Email：liaoyun @gzrbs.com。參考文獻(xiàn)［1］GB 50011—2010建筑抗震設(shè)計(jì)規(guī)范［S］. 北京：中國(guó)建筑工業(yè)出版社，2010.［2］孫廣俊，李愛群. 關(guān)于結(jié)構(gòu)振型參與系數(shù)和振型貢獻(xiàn)的分析［J］. 防震減災(zāi)工程學(xué)報(bào)， 2009，29（5）：485-490.
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