结构工程师
結構工程師
결구공정사
STRUCTURAL ENGINEERS
2014年
3期
1-6
,共6页
平面不规则%扭转效应%扭转周期比%扭转位移比%偏心率
平麵不規則%扭轉效應%扭轉週期比%扭轉位移比%偏心率
평면불규칙%뉴전효응%뉴전주기비%뉴전위이비%편심솔
irregular plane%torsion effect%torsional period ratio%torsional displacement ratio%eccentricity ratio
扭转效应是平面不规则结构最明显的动力特性，对结构抗震非常不利。结构平面布置不对称和不规则引起的偏心、扭转周期比以及扭转位移比通常是控制建筑扭转效应的主要参数。以某 L 形框架教学楼结构平面布置为例，对水平地震作用下平面扭转不规则结构抗扭设计进行了分析与研究，结果表明，通过适当调整结构内外圈构件布置，可以满足规范对上述三个主要因素的要求，结构抗扭性能得到较明显改善。
扭轉效應是平麵不規則結構最明顯的動力特性，對結構抗震非常不利。結構平麵佈置不對稱和不規則引起的偏心、扭轉週期比以及扭轉位移比通常是控製建築扭轉效應的主要參數。以某 L 形框架教學樓結構平麵佈置為例，對水平地震作用下平麵扭轉不規則結構抗扭設計進行瞭分析與研究，結果錶明，通過適噹調整結構內外圈構件佈置，可以滿足規範對上述三箇主要因素的要求，結構抗扭性能得到較明顯改善。
뉴전효응시평면불규칙결구최명현적동력특성，대결구항진비상불리。결구평면포치불대칭화불규칙인기적편심、뉴전주기비이급뉴전위이비통상시공제건축뉴전효응적주요삼수。이모 L 형광가교학루결구평면포치위례，대수평지진작용하평면뉴전불규칙결구항뉴설계진행료분석여연구，결과표명，통과괄당조정결구내외권구건포치，가이만족규범대상술삼개주요인소적요구，결구항뉴성능득도교명현개선。
The torsion effect is one of most obvious characteristics for high-rise structures with irregular planes.It has an adverse influence on the anti-seismic capability of the structure.Factors such as the eccen-tricity caused by asymmetry and irregularity of structural plan layout,the torsional period ratio,and the tor-sional displacement ratio usually control the torsion effect.This paper analyzed a L-shaped frame structure with an irregular plane layout under horizontal seismic loads.The torsion design for this building was discussed. Results show that through appropriately adjusting the internal and external structural member arrangement,the torsion effect can be reduced to meet the requirements of the specification for the aforementioned three parameters.
