DESIGNING AND DETAILING OF BUILDING SYSTEMS. MECHANICS IN CIVIL ENGINEERING

Evaluation of the resistance to progressive collapse of monolithic reinforced concrete frame buildingswith separate amplified floors

Vestnik MGSU 2/2014
  • Domarova Ekaterina Vladimirovna - Moscow State University of Civil Engineering (MGSU) postgraduate student, Department of Reinforced Concrete and Masonry Structures, Moscow State University of Civil Engineering (MGSU), 26 Yaroslavskoe shosse, Moscow, 129337, Russian Federation; This e-mail address is being protected from spambots. You need JavaScript enabled to view it .

Pages 22-29

In the article the authors propose a simplified method of dynamic analysis of the resistance to progressive collapse of a fragment of the building bearing system with amplified floors. This method is based on representing the building bearing system as a dynamic model with a denumerable number of degrees of freedom, in which the resistance of the system is provided mainly by the behavior of the columns. The degrees of freedom number is determined by the number of floors «hanging» to amplified floors. Thecontribution of slabs in the total system resistance is not taken into account. Stress-strain state of the columns is determined by the non-linear resistance diagram, including three stages: elastic, elastic with cracks and plastic stage connected with plastic yield in the steel of the columns. The criterion of sustainability to the progressive collapse is relative strain of steel of the undestroyed columns. A numerical example of the calculation of the building resistance to progressive collapse in case of sudden destruction of one vertical element based on proposed theoretical method is offered. A model with two numbers of degrees was considered. The suggested method allows estimating the strength, deformability and stability of monolithic reinforced concrete frame buildings with separate amplified floors. In the future it is intended to complicate the model by the accounting for the influence of deformation and constructive solution of the slabs on the stiffness characteristics of the model as a system with a finite number of degrees of freedom.

DOI: 10.22227/1997-0935.2014.2.22-29

References
  1. Almazov V.O., Belov S.A., Nabatnikov A.M. Zashchita ot progressiruyushchego razrusheniya [Protection from Progressive Collapse]. Nauka i tekhnologii v promyshlennosti [Science and Technologies in the Manufacturing Industry]. 2005, no. 3, pp. 64—74.
  2. UFC 4-023-03. Unified Facilities Criteria (UFC). Design of Buildings to Resist Progressive Collapse. Department of Defense USA. 2005.
  3. GSA (2003b). Progressive Collapse Analysis and Design Guidelines for New Federal Office Buildings and Major Modernization Projects. General Services Administration.
  4. Nair R.S. Progressive Collapse Basics. North American Steel Construction Conference, 2004.
  5. Rekomendatsii po zashchite monolitnykh zhilykh zdaniy ot progressiruyushchego obrusheniya [Recommendations on the Protection of Monolithic Residential Buildings from Progressive Collapse]. Moscow, GUP NIATs Publ., 2005, 24 p.
  6. Rudenko D.V., Rudenko V.V. Zashchita karkasnykh zdaniy ot progressiruyushchego obrusheniya [Protection of Frame Buildings from Progressive Collapse]. Inzhenernostroitel'nyy zhurnal [Civil Engineering Journal]. 2009, no. 3, pp. 38—41.
  7. Sovremennoe vysotnoe stroitel'stvo [Modern High-rise Construction]. Monograph. Moscow, GUP «ITTs Moskomarkhitektury» Publ., 2007, 440 p.
  8. Xu Peifu, Fu Xiuyeyi, Wang Cuikun, Xiao Congzhen, editor Xu Peifu. Proektirovanie sovremennykh vysotnykh zdaniy [Design of Modern High-rise Buildings]. Moscow, ASV Publ., 2008, 467 p.
  9. Almazov V.O., Plotnikov A.I., Rastorguev B.S. Problemy soprotivleniya zdaniy progressiruyushchemu razrusheniyu [Problems of Building's Strength to Progressive Collapse]. Vestnik MGSU [Proceedings of Moscow State University of Civil Engineering]. 2011, no. 2, vol. 1, pp. 15—20.
  10. Timoshenko S.P. Kolebaniya v inzhenernom dele [Fluctuations in Engineering]. Nauka Publ., 1967, 444 p.
  11. Plotnikov A.I., Rastorguev B.S. Raschet nesushchikh konstruktsiy monolitnykh zhelezobetonnykh zdaniy na progressiruyushchee razrushenie s uchetom dinamicheskikh effektov [Calculation of the Bearing Structures of Monolithic Reinforced Concrete Buildings for the Progressive Collapse with Account for the Dynamic Effects]. Sbornik nauchnykh trudov Instituta stroitel'stva i arkhitektury MGSU [Collection of the Scientific Works of the Institute of Civil Engineering and Architecture MGSU]. Moscow, MGSU Publ., 2008, pp. 127—135.

Download

Results 1 - 1 of 1