基础隔震结构屋面突出物的水平地震作用研究

焦春节;焦春茂

振动与冲击 ›› 2010, Vol. 29 ›› Issue (10) : 182-186.

PDF(915 KB)
PDF(915 KB)
振动与冲击 ›› 2010, Vol. 29 ›› Issue (10) : 182-186.
论文

基础隔震结构屋面突出物的水平地震作用研究

  • 焦春节1 ; 焦春茂2
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Horizontal Earthquake Effects on Small Towers of the Seismic-isolation Building

  • Jiao Chunjie1; Jiao Chunmao2
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摘要




根据《建筑抗震设计规范》(GB50011-2001)和《叠层橡胶支座隔震技术规程》(CECS 126:2001),在理论分析基础上,得到采用等效侧力法时屋面突出物水平地震作用修正系数nβ的表达式。指出nβ的控制因素为突出物与主体结构的质量比α和突出物和隔震层间刚度比β。并仿照《高层建筑混凝土结构技术规程》(JGJ3-2002),得到基础隔震结构屋面突出物水平地震作用修正系数nβ的实用表格。同时基于有限元理论的振型分解反应谱法建立模型计算,给出了修正系数。通过算例分析,可知结果可供工程中使用。

Abstract

Base on Code For Seismic Design of Buildings(GB50011-2001)and Technical Specification for Rubber Isolation Bearing(CECS 126:2001),the correction coefficient formulas is presented by being theoretically analyzed when equivalent lateral analysis methods is adopted. It’s pointed out that the controlling factors of correction coefficient include mass ratio between the tower and the main structure, story stiffness between the isolation layer and the tower. An correction coefficient table is supplied for design according to Technical Specification For Concrete Structure of Tall Building(JGJ3-2002).Mode superposition method based on finite element model is used to compute seismic effects, the correction coefficient table is presented. The result is supplied for practical design by analysis.

关键词

屋面突出物 / 修正系数 / 隔震结构 / 等效侧力法 / 水平地震作用

Key words

the towers of the tall building / correction coefficient / seismic-isolation structure / equivalent lateral analysis methods / horizontal earthquake effect

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导出引用
焦春节;焦春茂. 基础隔震结构屋面突出物的水平地震作用研究[J]. 振动与冲击, 2010, 29(10): 182-186
Jiao Chunjie;Jiao Chunmao. Horizontal Earthquake Effects on Small Towers of the Seismic-isolation Building[J]. Journal of Vibration and Shock, 2010, 29(10): 182-186

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