外文原文-土木工程加固混凝土框架结构抗连续倒塌的设计方法.pdf

1、Available online at 2211-3819 2011 Published by Elsevier B.V.Selection and/or peer-review under responsibility of the Organising Committee of The International Conference of Risk and Engineering Management.doi:10.1016/j.sepro.2011.08.009Systems Engineering Procedia 1(2011)48542011 International Conf

2、erence on Risk and Engineering Management(REM)Design Methods of Reinforce-concrete Frame Structure to Resist Progressive Collapse in Civil EngineeringHongyu Wanga,*,Youpo Sub,Qingshen ZengcaEarthquake Engineering Research Center of Hebei Province?Tangshan,063009,P.R.ChinaCollege of Civil and Archite

3、ctural Engineering,Hebei United University?bEarthquake Engineering Research Center of Hebei Province?Tangshan,063009,P.R.ChinaCollege of Civil and Architectural Engineering,Hebei United University?cEarthquake Engineering Research Center of Hebei Province?Tangshan,063009,P.R.ChinaCollege of Civil and

4、 Architectural Engineering,Hebei United University?AbstractSince the 9.11terrorist event,the World Trade Center progressive collapsed in a flash,U.S.engineers began to really care about preventing progressive collapse in reinforced concrete buildings.When the accident has happened,the structures col

5、lapse is a serious threat to public safety.In our country,most public buildings are reinforced concrete frame structure.Comparing with shear wall structure,frame structure is more likely to collapse.Therefore,the research about progressive collapse of frame structures is very important.Some standard

6、 native and abroad such as British Standards,GSA2003,U.S.Department of Defense standard(DoD2005)and DoD2009 did researches in this text and these researches can be used for designers as reference in the project design.2011 Published by Elsevier Ltd.Keywords:Concrete frame structure;Progressive colla

7、pse;Civil engineering;Accidental event;1.IntroductionThe definition of buildings capacity to resist progressive collapse is that the internal forces of the structureregulate spontaneous to prevent progressive collapse damage and then avoid the overall collapse when emergency or severe overloading of

8、 local lead to a sudden failure of some component.Frame structure system is commonly used in office building and residential building that generally includes frame structure,the framework-support structure system,the tube structure system and the huge frame structure.Many public buildings built,buil

9、d and will build can be classified as frame structure system.Therefore,the resist progressive collapse detailed analysis of the framestructure buildings has a more practical significance for the engineers.One corner of Ronan Point lodging house,which is a 22 floors building with prefabricated concre

10、te structure,totally destroyed up and down just because gas explosion in the kitchen in 18th*Corresponding author.Tel.:15033917769;floors corner push down the outside E-mail address:.2011 Published by Elsevier B.V.Selection and/or peer-review under responsibility of the Organising Committee of The I

11、nternational Conference of Risk and Engineering Management.Hongyu Wang et al./Systems Engineering Procedia 1(2011)485449load-bearing wall and make the upper floor fall down to destroy the lower floor and then domino effect.After the collapse of Ronan Point apartment(Figure 1),May 16,1968 in London,E

12、ngland,many researchers has paid attention to high-rise buildings over all collapse caused by the destruction of part or component of the structure.Progressive collapse is also widely used here.Fig.1.Ronan Point building after 16 May 1968 collapse2.Foreign standards about buildings to resist progres

13、sive collapse2.1.British StandardsBritains design specifications demand constructions of 5 storeys and more than 5 storeys consider the effect of accidents.British Standards proposed three methods as following:?1)Tying design:Through effectively tie force provided by lateral and vertical elements of

14、 the structure to improve the structural integrity and redundancy rate;?2)Bridging design:Requires some of the level structural components should still across two bay spacing and do not completely lose their capacity after its support members destroyed.Such as the partial collapse,the collapse regio

15、n should not exceed 15%of the floor area or 70m2?3)Key element design:If the remove of one component may lead to the collapse of a wide range of structure,this component should be designed to be a key component,that is,to ensure that the components should be able to bear additional 34kN/m;2The Briti

16、sh beam progressive collapse design process is considered to be effective,but the related researchof uniformly distributed load at each direction.2.2.Guide of U.S.Public Service Authority?GSA2003?1,2,3 pointed out that the largest deficiency about the design is bond strength in the design do not consider structural ductility lead to tie force method unsafe.U.S.Public Service Authority(GSA)enacted the Progressive collapse analysis and design guidelines for new federal office buildings and major m