- 摘 要
-
(中國建筑科學(xué)研究院， 北京100013)
［摘要］推導(dǎo)了理想的彎曲型和剪切型懸臂結(jié)構(gòu)在地震作用下的剪重比理論公式，以此為基礎(chǔ)對《建筑抗震設(shè)計(jì)規(guī)范》（GB 50011—2010）第5.2.5條中的剪重比控制方法進(jìn)行了探討，指出“規(guī)范的剪重比限值與場地特征周期和結(jié)構(gòu)阻尼比無關(guān)，從而導(dǎo)致其對某些特征周期較長的結(jié)構(gòu)完全不控制，而對某些特征周期較短的結(jié)構(gòu)則控制過嚴(yán)”的問題。最后提出了通過直接調(diào)整長周期段加速度反應(yīng)譜以完成剪重比控制的改進(jìn)建議。
［關(guān)鍵詞］彎曲型懸臂結(jié)構(gòu); 剪切型懸臂結(jié)構(gòu); 剪重比
中圖分類號：TU318,TU973.1 文獻(xiàn)標(biāo)識碼：A 文章編號：1002-848X(2014)03-0007-06
Study on control method and rules of seismic shear-weight ratio for building structure
Huang Jifeng, Li Dang, Xiao Li
(China Academy of Building Research, Beijing 100013, China)
Abstract: The theoretical solutions of seismic shear-weight ratio were derived for the flexural and the shearing cantilever structure, based on which the rationality of the provision 5.2.5 in Code for seismic design of buildings(GB 50011-2010) in China was investigated. It was pointed out that the limit value of seismic shear-weight ratio in the code is independent of the characteristic period of ground motion and structural damping ratio, so that the seismic shear-weight ratio for some structures with long site characteristic period is out of control and that for some other structures with short site characteristic period is given excessive strict limitation. At last, by regulating the design spectrum curve in the long period zone, an improved seismic shear-weight ratio control method was presented.
Keywords: flexural cantilever structure; shearing cantilever structure; seismic shear-weight ratio
作者簡介：黃吉鋒，博士，研究員，Email: huangjifeng@cabrtech.com。
參考文獻(xiàn)
［1］GB 50011—2010 建筑抗震設(shè)計(jì)規(guī)范［S］.北京：中國建筑工業(yè)出版社，2010.
［2］戴國瑩,王亞勇. 房屋建筑抗震設(shè)計(jì)［M］.北京：中國建筑工業(yè)出版社，2005.
［3］唐友剛. 高等結(jié)構(gòu)動(dòng)力學(xué)［M］.天津：天津大學(xué)出版社，2002.
［4］CLOUGH R W， PENZIEN J. Dynamics of structures［M］. 2nd ed. McGraw-Hill, Inc., 1993.
［5］謝禮立,周雍年,胡成祥,等.地震動(dòng)反應(yīng)譜的長周期振動(dòng)特性［J］.地震工程與工程振動(dòng)，1990,10(1):1-20.
［6］周雍年,周正華,于海英.設(shè)計(jì)反應(yīng)譜長周期區(qū)段的研究［J］. 地震工程與工程振動(dòng)，2004，24(2): 15-18.
［7］王國權(quán),周錫元. 921臺灣集集地震近斷層強(qiáng)震記錄的基線校正［J］. 地震地質(zhì)，2004, 26(1): 1-14.
- 下載地址
-
