地震工程与工程振动
地震工程與工程振動
지진공정여공정진동
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION
2010年
1期
22-28
,共7页
高层钢结构%失效准则%地震失效模式控制%失效路径%整体抗震能力
高層鋼結構%失效準則%地震失效模式控製%失效路徑%整體抗震能力
고층강결구%실효준칙%지진실효모식공제%실효로경%정체항진능력
steel tall buildings%failure criterion%seismic failure mode control%failure path%integral seismic capacity
本文主要研究高层钢框架结构的地震失效模式及其控制方法.首先,给出了高层钢结构的地震失效模式的分析方法;其次,提出了根据结构的失效路径来加强构件对高层钢结构的地震失效模式进行控制的方法;然后,提出了结构整体抗震能力的分析方法以及分别相应于设计能力和屈服能力的能力储备分析方法;最后,通过对一座15层的钢框架结构进行典型地震动下的极限时程分析和极限pushover分析,得到高层钢框架结构的失效模式和整体抗震能力以及相应于最弱失效模式的能力储备,并验证了本文中地震失效模式控制方法的有效性.本文的研究表明,高层钢结构的地震失效模式控制可以采用结构失效路径修正(薄弱构件加强)来实现.
本文主要研究高層鋼框架結構的地震失效模式及其控製方法.首先,給齣瞭高層鋼結構的地震失效模式的分析方法;其次,提齣瞭根據結構的失效路徑來加彊構件對高層鋼結構的地震失效模式進行控製的方法;然後,提齣瞭結構整體抗震能力的分析方法以及分彆相應于設計能力和屈服能力的能力儲備分析方法;最後,通過對一座15層的鋼框架結構進行典型地震動下的極限時程分析和極限pushover分析,得到高層鋼框架結構的失效模式和整體抗震能力以及相應于最弱失效模式的能力儲備,併驗證瞭本文中地震失效模式控製方法的有效性.本文的研究錶明,高層鋼結構的地震失效模式控製可以採用結構失效路徑脩正(薄弱構件加彊)來實現.
본문주요연구고층강광가결구적지진실효모식급기공제방법.수선,급출료고층강결구적지진실효모식적분석방법;기차,제출료근거결구적실효로경래가강구건대고층강결구적지진실효모식진행공제적방법;연후,제출료결구정체항진능력적분석방법이급분별상응우설계능력화굴복능력적능력저비분석방법;최후,통과대일좌15층적강광가결구진행전형지진동하적겁한시정분석화겁한pushover분석,득도고층강광가결구적실효모식화정체항진능력이급상응우최약실효모식적능력저비,병험증료본문중지진실효모식공제방법적유효성.본문적연구표명,고층강결구적지진실효모식공제가이채용결구실효로경수정(박약구건가강)래실현.
This paper mainly studies seismic failure modes and their control of tall steel buildings. Firstly, the a-nalysis methods of seismic failure modes of steel tall buildings are given. Secondly, a method for seismic failure mode control of tall steel buildings is presented by strengthening the members according to the structural failure path. Thirdly, the analysis methods of structural integral seismic capacity and capacity storage respectively corresponding to design capacity and yielding capacity are presented. Finally, the failure modes, integral seismic capacity and capacity storage corresponding to weakest failure mode are obtained by employing a 15-story steel frame building for ultimate time-history analysis under typical earthquake ground motions and ultimate pushover analysis. And the method for seismic failure mode control of tall steel buildings in this paper is proved practicable. The research in the paper will provide an effective method for seismic failure mode control of tall steel buildings by changing the structural failure path.
