屈服点谱(Yield Point Spectra,YPS)是一种新的等延性位移加速度反应谱。以7条坚硬场地条件下的地震记录为输入,建立了适用于结构设计的屈服点谱,并且提出了基于YPS确定K型偏心支撑钢框架(EBF)屈服基底剪力的性态设计方法,对周边构件进...屈服点谱(Yield Point Spectra,YPS)是一种新的等延性位移加速度反应谱。以7条坚硬场地条件下的地震记录为输入,建立了适用于结构设计的屈服点谱,并且提出了基于YPS确定K型偏心支撑钢框架(EBF)屈服基底剪力的性态设计方法,对周边构件进行了能力设计。展开更多
基于屈服点谱(Yield Point Spectra,YPS)方法设计了1榀10层3跨K型偏心支撑钢框架结构(K-EBF),采用Pushover方法和弹塑性时程法对所设计的结构进行了地震反应分析。结果表明,算例结构的屈服位移是基本稳定的,在偶遇和罕遇地震作用下结构...基于屈服点谱(Yield Point Spectra,YPS)方法设计了1榀10层3跨K型偏心支撑钢框架结构(K-EBF),采用Pushover方法和弹塑性时程法对所设计的结构进行了地震反应分析。结果表明,算例结构的屈服位移是基本稳定的,在偶遇和罕遇地震作用下结构的层间侧移比满足我国现行抗震规范的要求,结构最终呈现理想的渐进式梁铰屈服机构;最终证明了该设计方法的合理性和可靠性。展开更多
屈服点谱(Yield Point Spectra,YPS)是一种新的位移-加速度反应谱的表述形式。根据5条地震波构造了平均YPS谱,基于平均的YPS谱设计了1榀6层3跨的多层钢框架结构,采用Pushover方法和弹塑性时程分析方法对所设计的结构进行性态分析。结果...屈服点谱(Yield Point Spectra,YPS)是一种新的位移-加速度反应谱的表述形式。根据5条地震波构造了平均YPS谱,基于平均的YPS谱设计了1榀6层3跨的多层钢框架结构,采用Pushover方法和弹塑性时程分析方法对所设计的结构进行性态分析。结果表明,算例结构最终呈现理想的梁铰屈服机构,在罕遇地震作用下结构的层间侧移比满足现行抗震规范的要求,且结构延性满足目标性态要求。证明了基于YPS设计方法的可行性和合理性。展开更多
In order to evaluate the seismic stability of reinforced soil walls against bearing capacity failure,the seismic safety factor of reinforced soil walls was determined by using pseudo-dynamic method,and calculated by c...In order to evaluate the seismic stability of reinforced soil walls against bearing capacity failure,the seismic safety factor of reinforced soil walls was determined by using pseudo-dynamic method,and calculated by considering different parameters,such as horizontal and vertical seismic acceleration coefficients,ratio of reinforcement length to wall height,back fill friction angle,foundation soil friction angle,soil reinforcement interface friction angle and surcharge.The parametric study shows that the seismic safety factor increases by 24-fold when the foundation soil friction angle varies from 25°to 45°,and increases by 2-fold when the soil reinforcement interface friction angle varies from 0 to 30°.That is to say,the bigger values the foundation soil and/or soil reinforcement interface friction angles have,the safer the reinforced soil walls become in the seismic design.The results were also compared with those obtained from pseudo-static method.It is found that there is a higher value of the safety factor by the present work.展开更多
文摘基于屈服点谱(Yield Point Spectra,YPS)方法设计了1榀10层3跨K型偏心支撑钢框架结构(K-EBF),采用Pushover方法和弹塑性时程法对所设计的结构进行了地震反应分析。结果表明,算例结构的屈服位移是基本稳定的,在偶遇和罕遇地震作用下结构的层间侧移比满足我国现行抗震规范的要求,结构最终呈现理想的渐进式梁铰屈服机构;最终证明了该设计方法的合理性和可靠性。
文摘屈服点谱(Yield Point Spectra,YPS)是一种新的位移-加速度反应谱的表述形式。根据5条地震波构造了平均YPS谱,基于平均的YPS谱设计了1榀6层3跨的多层钢框架结构,采用Pushover方法和弹塑性时程分析方法对所设计的结构进行性态分析。结果表明,算例结构最终呈现理想的梁铰屈服机构,在罕遇地震作用下结构的层间侧移比满足现行抗震规范的要求,且结构延性满足目标性态要求。证明了基于YPS设计方法的可行性和合理性。
文摘In order to evaluate the seismic stability of reinforced soil walls against bearing capacity failure,the seismic safety factor of reinforced soil walls was determined by using pseudo-dynamic method,and calculated by considering different parameters,such as horizontal and vertical seismic acceleration coefficients,ratio of reinforcement length to wall height,back fill friction angle,foundation soil friction angle,soil reinforcement interface friction angle and surcharge.The parametric study shows that the seismic safety factor increases by 24-fold when the foundation soil friction angle varies from 25°to 45°,and increases by 2-fold when the soil reinforcement interface friction angle varies from 0 to 30°.That is to say,the bigger values the foundation soil and/or soil reinforcement interface friction angles have,the safer the reinforced soil walls become in the seismic design.The results were also compared with those obtained from pseudo-static method.It is found that there is a higher value of the safety factor by the present work.
