砌体-混凝土筒体结构破坏过程仿真分析
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摘要
自汶川地震后许多学者提出了不少新型的结构形式,砌体结构与混凝土墙组合结构就是其中的一种。在前人的分析与研究基础上,提出一种相对合理的砌体墙与混凝土墙布置方式,将普通砖砌体房屋中间部分砖墙改为混凝土剪力墙形成封闭的筒体,混凝土筒体贯通至房屋顶层,采用大型有限元软件LS-DYNA对这类结构进行了研究,模拟了在地震荷载下组合结构的响应过程,以及组合结构的破坏及倒塌形式。仿真分析结果与前人的实验结果吻合,可以初步得到该形式的组合结构受力特点及破坏机理,进一步验证了同一结构中两种不同材料墙体的协同工作性能、抗震性能和大变形下的破坏特征。
After the earthquake of Wenchuan,many scholars put forward a lot of new type of structure,masonry structure and reinforced concrete wall structure is one of them.In previous analysis and research basis,a relatively reasonable kind of masonry wall and reinforced concrete wall arrangement is introduced in the thesis,the ordinary brick masonry building among part of reinforced concrete shear wall brick wall to form a closed the cylinder body,reinforced concrete cylinder breakthrough the top floor,LS-DYNA,software of finite element,is used to study the structure,simulations of the response procedures of composite structure under earthquake load are made,as well as the destruction of the structure and form of collapsed.The simulation result as the same previous experiment,can get this form of combination preliminary structural characteristics and failure mechanism,further verified the structure of two different materials wall cooperative work performance,the seismic performance and large deformation characteristics of failure.
After the earthquake of Wenchuan,many scholars put forward a lot of new type of structure,masonry structure and reinforced concrete wall structure is one of them.In previous analysis and research basis,a relatively reasonable kind of masonry wall and reinforced concrete wall arrangement is introduced in the thesis,the ordinary brick masonry building among part of reinforced concrete shear wall brick wall to form a closed the cylinder body,reinforced concrete cylinder breakthrough the top floor,LS-DYNA,software of finite element,is used to study the structure,simulations of the response procedures of composite structure under earthquake load are made,as well as the destruction of the structure and form of collapsed.The simulation result as the same previous experiment,can get this form of combination preliminary structural characteristics and failure mechanism,further verified the structure of two different materials wall cooperative work performance,the seismic performance and large deformation characteristics of failure.
引文
[1]UFC 4-023-03.Design of Buildings to Resist ProgressiveCollapse[S].U.S.DepartmentofDefence,2005.
[2]Progressive collapse analysis and design guideline for new federal office buildings and major nodernization project[S].U.S.GeneralServicesAdministration,2003.
[3]潘元.钢筋混凝土框筒结构地震反应的仿真分析[D].西安:西安建筑科技大学,2004.
[4]高小旺,王菁,肖伟,等.八层砖墙与钢筋混凝土墙组合结构1/2比例模型抗震试验研究[J].建筑结构学报,1999,20(1):31-38.
[5]王万钊,杨秀凤,周惟,等.砖墙与混凝土剪力墙混合结构八层建筑模型抗震性能实验研究[J].建筑科学,1996,31(1):10-17.
[6]施楚贤.砌体结构理论与设计[M].北京:中国建筑工业出版社,2003.
[7]曾晓明,杨伟军,施楚贤.砌体受压本构关系模型的研究[J].四川建筑科学研究,2001,20(3):8-10.
[8]刘桂秋,施楚贤,黄靓.对砌体剪-压破坏准则的研究[J].湖南大学学报,2009,34(4):19-23.
[9]过镇海,张秀琴,张达成,等.混凝土应力-应变全曲线的试验研究[J].建筑结构学报,1982(01):1-12.
[10]Willam K J,Warnke E P.Constitutive Mode1s for the Triaxial Behavior of Concrete[J].Int Assoc Bridge Struct Eng Proc,1975,19:1-30.
[11]GB50011—2001建筑抗震设计规范[S].
[2]Progressive collapse analysis and design guideline for new federal office buildings and major nodernization project[S].U.S.GeneralServicesAdministration,2003.
[3]潘元.钢筋混凝土框筒结构地震反应的仿真分析[D].西安:西安建筑科技大学,2004.
[4]高小旺,王菁,肖伟,等.八层砖墙与钢筋混凝土墙组合结构1/2比例模型抗震试验研究[J].建筑结构学报,1999,20(1):31-38.
[5]王万钊,杨秀凤,周惟,等.砖墙与混凝土剪力墙混合结构八层建筑模型抗震性能实验研究[J].建筑科学,1996,31(1):10-17.
[6]施楚贤.砌体结构理论与设计[M].北京:中国建筑工业出版社,2003.
[7]曾晓明,杨伟军,施楚贤.砌体受压本构关系模型的研究[J].四川建筑科学研究,2001,20(3):8-10.
[8]刘桂秋,施楚贤,黄靓.对砌体剪-压破坏准则的研究[J].湖南大学学报,2009,34(4):19-23.
[9]过镇海,张秀琴,张达成,等.混凝土应力-应变全曲线的试验研究[J].建筑结构学报,1982(01):1-12.
[10]Willam K J,Warnke E P.Constitutive Mode1s for the Triaxial Behavior of Concrete[J].Int Assoc Bridge Struct Eng Proc,1975,19:1-30.
[11]GB50011—2001建筑抗震设计规范[S].
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