全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...

带消能伸臂桁架超限框筒结构在长周期 地震动作用下的反应分析

, PP. 15-22

Keywords: 超限框筒结构,长周期地震动,消能伸臂桁架,时程分析

Full-Text   Cite this paper   Add to My Lib

Abstract:

由于长周期地震动记录相对缺乏,国内外对长周期地震动作用下高层结构的地震响应研究尚不充分,特别是复杂超限高层结构。从2008年汶川地震记录中选择长周期分量明显的61CAT台站记录作为输入,以一245。60m高超限框筒结构为背景,进行了长周期地震动记录不同设防水准输入下的弹性和弹塑性时程分析,并与相应水准ElCentro地震动记录输入下的分析结果进行了对比,对比结果表明长周期地震动记录输入下结构的最大水平位移和层间位移角等指标均显著增大,多遇烈度时算例结构X向、Y向最大层间位移角分别为1/218、1/240,远远超出规范限值。进一步,为了考察消能减震措施对超限高层结构在长周期地震动记录下的减震效果,分别在伸臂桁架水平弦杆、竖向腹杆及及斜撑上布置黏滞阻尼器构成水平型、竖向型及单斜撑型消能伸臂桁架,在长周期地震动记录输入下对带不同阻尼器布置形式的伸臂桁架结构进行了分析,结构的最大水平位移和最大层间位移角等指标明显降低,这一结果表明消能伸臂桁架可以较好地控制结构在长周期地震动记录输入下的地震响应,特别是竖向型阻尼器布置控制效果更好,61CAT记录多遇烈度水准输入下X向和Y向最大层间位移角可减小到1/298和1/312;罕遇烈度水准下X向和Y向最大层间位移角可由原结构的1/58和1/75减小到1/87和1/107。与普通地震动记录输入下的结果相比,长周期地震动输入下消能伸臂桁架发挥的控制作用更加明显。

References

[1]  周颖, 吕西林, 张翠强. 消能伸臂桁架超高层结构抗震性能研究[J]. 振动与冲击,2011, 30(11)186-189. ZHOU Ying, Lü Xilin, ZHANG Cuiqiang. Seismic performance of super-tall building with energy dissipation outriggers [J]. Journal of vibration and shock, 2011, 30(11)186-189.
[2]  Faccioli E, Cauzzi C, Paolucci R, et al. Long period strong ground motion and its use as input to displacement based design [M]// Pitilakis K D. Earthquake Geotechnical Engineering. NetherlandsSpringer, 200723?51.
[3]  杨伟林, 朱升初, 洪海春, 等. 汶川地震远场地震动特征及其对长周期结构影响的分析[J]. 防灾减灾工程学报, 2009, 29(4)473-478. YANG Weilin, ZHU Shengchu, HONG Haichun, et al. Characteristics of far-field ground motion of Wenchuan earthquake and the effect on long-periodic structures [J]. Journal of Disaster Prevention and Mitigation Engineering, 2009, 29(4)473-478.
[4]  周福霖, 崔鸿超, 安部重孝(日), 等. 东日本大地震灾害考察报告[J]. 建筑结构, 2014, 42(4)1-20. ZHOU Fulin, CUI Hongchao, Shigetaka ABE, et al. Inspection report of the disaster of the East Japan earthquake by Sino-Japanese joint mission[J]. Building Structure, 2014, 42(4)1-20.
[5]  Smith R J, Willford M R. The damped outrigger concept for tall buildings [J]. The Structural Design of Tall and Special Buildings, 2007, 16(4)501-517.
[6]  Willford M, Smith R, Scott D, et al. Viscous dampers come of ageA new method for achieving economy in tall buildings [J]. Structure magazine, June 200815-18.
[7]  Takewaki I, Murakami S, Fujita K, et al. The 2011 off the Pacific coast of Tohoku earthquake and response of high-rise buildings under long-period ground motions [J]. Soil Dynamics and Earthquake Engineering, 2011, 31(11)1511?1528.
[8]  Chen K C, Wang J H, Huang B S, et al. Vibrations of the TAIPEI 101 skyscraper caused by the 2011 Tohoku earthquake, Japan [J]. Earth Planets Space, 2012, 64(12)1277?1286.
[9]  陈清军, 袁伟泽.长周期地震波作用下高层建筑结构的弹塑性动力响应分析[J]. 力学季刊, 2011, 32(3)403?410. CHENG Qingjun, YUAN Weize. Elasto-plastic dynamic response analysis of high rise Structures under long period ground motion [J]. Chinese quarterly of mechanics, 2011, 32(3)403?410.
[10]  张振炫, 陈清军. 高层建筑结构长周期地震反应的比较研究[J]. 结构工程师, 2009, 25(4)78?84. ZHANG Zhenxuan,CHEN Qingjun. A comparative study on long-period seismic responses for high-rise structures [J]. Structural Engineers, 2009, 25(4)78?84.
[11]  杨学林, 周平槐, 徐燕青. 兰州红楼时代广场超限高层性能化抗震设计[J]. 建筑结构, 2012, 42(8)50?55. YANG Xuelin, ZHOU Pinghuai, XU Yanqing, Performance-based design of out-of-code high-rise building of Honglou Times Square in Lanzhou [J]. Building Structure, 2012, 42(8)50?55.
[12]  杨学林, 周平槐, 徐燕青. 兰州红楼时代广场超限高层结构设计[J]. 建筑结构, 2012, 42(8)42-49. YANG Xuelin, ZHOU Pinghuai, XU Yanqing, Design on out-of-code high-rise buildings of Honglou times in Lanzhou [J]. Building Structure, 2012, 42(8)42-49.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133