南昌大学学报(工科版)
南昌大學學報(工科版)
남창대학학보(공과판)
JOURNAL OF NANCHANG UNIVERSITY ENGINEERING & TECHNOLOGY EDITION
2014年
4期
335-340
,共6页
连续倒塌%抗力%延性%框架结构%钢筋混凝土
連續倒塌%抗力%延性%框架結構%鋼觔混凝土
련속도탑%항력%연성%광가결구%강근혼응토
progressive collapse%resistance%ductility%frame structure%reinforced concrete
以钢筋混凝土平面框架为分析对象,采用解析法讨论了钢筋混凝土框架结构连续倒塌全过程及相应抗连续倒塌机制和抗连续倒塌能力,推导了梁机制、复合机制、悬链线机制等各种抗力的理论计算公式。将这种分析方法和理论计算公式用于笔者完成的2个钢筋混凝土空间框架结构的连续倒塌试验,连续倒塌的抗力计算结果与试验结果符合较好。基于结构抗连续倒塌的自身特点,提出了“结构抗连续倒塌的延性要求与结构抗震的延性要求是不同的”这一观点,建立了钢筋混凝土框架结构抗连续倒塌延性系数的定义和计算方法。结合连续倒塌过程、抗连续倒塌机制、抗力和延性的分析,提出了混凝土框架结构抗连续倒塌的延性设计要求。
以鋼觔混凝土平麵框架為分析對象,採用解析法討論瞭鋼觔混凝土框架結構連續倒塌全過程及相應抗連續倒塌機製和抗連續倒塌能力,推導瞭樑機製、複閤機製、懸鏈線機製等各種抗力的理論計算公式。將這種分析方法和理論計算公式用于筆者完成的2箇鋼觔混凝土空間框架結構的連續倒塌試驗,連續倒塌的抗力計算結果與試驗結果符閤較好。基于結構抗連續倒塌的自身特點,提齣瞭“結構抗連續倒塌的延性要求與結構抗震的延性要求是不同的”這一觀點,建立瞭鋼觔混凝土框架結構抗連續倒塌延性繫數的定義和計算方法。結閤連續倒塌過程、抗連續倒塌機製、抗力和延性的分析,提齣瞭混凝土框架結構抗連續倒塌的延性設計要求。
이강근혼응토평면광가위분석대상,채용해석법토론료강근혼응토광가결구련속도탑전과정급상응항련속도탑궤제화항련속도탑능력,추도료량궤제、복합궤제、현련선궤제등각충항력적이론계산공식。장저충분석방법화이론계산공식용우필자완성적2개강근혼응토공간광가결구적련속도탑시험,련속도탑적항력계산결과여시험결과부합교호。기우결구항련속도탑적자신특점,제출료“결구항련속도탑적연성요구여결구항진적연성요구시불동적”저일관점,건립료강근혼응토광가결구항련속도탑연성계수적정의화계산방법。결합련속도탑과정、항련속도탑궤제、항력화연성적분석,제출료혼응토광가결구항련속도탑적연성설계요구。
Process,mechanism and resistance of progressive collapse for reinforced concrete plane frame struc-tures were analyzed by using analytic method in this study. Calculating formulas of resistance for beam,compound and catenary mechanism were presented. This method was applied to analysis two experimental models which were finished with reinforced concrete spatial frame structures by the authors. The analysis results were well agreed with the test data. On the basis of progressive collapse own characteristics,the viewpoint that the ductility requirement was different between progressive collapse and seismic was presented. The definition and calculation method of duc-tility coefficient were given. Combining with analysis on process,mechanism,resistance and ductility,ductility-de-sign requirements for progressive collapse of reinforced concrete frame structures were put forward.