Publications
388 results found
Kumar M, Stafford P, Elghazouli AY, 2010, Seismic Response Assessment of Multi-Storey Steel Frames Designed to Eurocode 8, 14th European Conference on Earthquake Engineering, 14ECEE
Dorra EM, Stafford PJ, Elghazouli AY, 2010, Seismic Loss Assessment for Buildings and Infrastructure in Greater Cairo, 14th European Conference on Earthquake Engineering, 14ECEE
Eder MA, Vollum RL, Elghazouli AY, 2010, Modelling and experimental assessment of punching shear in flat slabs with shearheads, Engineering Structures, Vol: 32, Pages: 3911-3924, ISSN: 0141-0296
This paper deals with the modelling of punching shear failure in reinforced concrete slabs usingnonlinear finite element analysis. An analytical procedure is presented for simulating punching failure. The procedure is validated for a large-scale reinforced concrete flat slab without shear reinforcement that failed in punching. A parametric analysis is carried out to determine the influence of the key parameters which govern the performance. The analytical procedure is then used to model the response of a large-scale hybrid reinforced concrete flat slab specimen tested at Imperial College London whichfailed in punching. The specimen incorporated a tubular steel column and an ACI 318 type structural steel shearhead. The results of the analysis are used to gain fundamental insights into the contribution of the shearhead to the shear resistance, and to assess the reliability of existing design recommendations for structural steel shearheads.
Cai SB, Izzuddin BA, Elghazouli A, et al., 2010, A new DEM for interaction between adjacent RC membrane structures, International Symposium on Structural Integrity (ISSI 2010), Publisher: EAST CHINA UNIV SCIENCE AND TECHNOLOGY PRESS, Pages: 385-392
Cashell K, Elghazouli AY, Izzuddin BA, 2010, Ultimate Behaviour of Idealized Composite Floor Elements at Ambient and Elevated Temperature, Pages: 67-89
Elghazouli AY, 2010, Assessment of European seismic design procedures for steel framed structures, Bulletin of Earthquake Engineering, Vol: 8, Pages: 65-89
Nethercot DA, Stylianidis P, Izzuddin BA, et al., 2010, Resisting Progressive Collapse by the Use of Tying Resistance, Fourth International Conference on Steel and Composite Structures, ICSCS10, Pages: 92-107
Cashell K, Elghazouli AY, Izzuddin BA, 2010, Influence of Reinforcement Properties on the Failure of Composite Slabs in Fire, Sixth International Conference on Structures in Fire, Sif10, Pages: 374-381
Malaga-Chuquitaype C, Elghazouli AY, 2010, Component-Based Mechanical Models for Blind-Bolted Angle Connections, Engineering Structures, Vol: 32, Pages: 3048-3067
Britner A, Ummenhofer T, Elghazouli AY, et al., 2010, Blast and Impact, Experimental Investigations on Composite Structures, Stahlbau, Vol: 79, Pages: 580-589
Cashell KA, Elghazouli AY, Izzuddin BA, 2010, Experimental and Analytical Assessment of Ductility in Lightly Reinforced Concrete Members, Engineering Structures, Vol: 32, Pages: 2729-2743
Malaga-Chuquitaype C, Elghazouli AY, 2010, Behaviour of combined channel/angle connections to tubular columns undermonotonic and cyclic loading, Engineering Structures, Vol: 32, Pages: 1600-1616
Nip KH, Gardner L, Elghazouli AY, 2010, Cyclic testing and numerical modelling of carbon steel and stainless steel tubular bracing members, Engineering Structures, Vol: 32, Pages: 424-441
Nethercot DA, Stylianidis P, Izzuddin BA, et al., 2009, Enhancing the robustness of steel and composite buildings, Pages: 105-122
Methods intended for use in the design of steel and composite building frames covering the provision of adequate robustness so as to guard against progressive collapse are in the process of moving from prescriptive to quantitative. An approach that recognises all the important complex physical phenomena, employs a realistic criterion of failure and is capable of being implemented at a variety of levels has been devised at Imperial College London. Recent further development of this method has streamlined the necessary analyses, thereby making it possible to conduct parametric studies that provide insights into the link between changes to the structure and quantitative measures of resistance to progressive collapse. This approach is used herein to examine a number of different arrangements, from which key features of behaviour are identified. It has therefore been possible to isolate those structural modifications with the greatest potential for improving robustness and, moreover, to associate quantitative measures of that improvement with each scheme. Results for a series of arrangements, including several proposals put forward by Industry as methods of improving robustness based on the simple notion of increased tying capacity, are examined herein and general principles for improvement identified.
Nip KH, Gardner L, Davies CM, et al., 2009, Extremely low cycle fatigue tests on structural carbon steel and stainless steel, Journal of Constructional Steel Research, Vol: 66, Pages: 96-110, ISSN: 0143-974X
Cyclic material tests in the low and extremely low cycle fatigue regime were carried out to study the properties of structural carbon steel and stainless steel. A total of 62 experiments were performed in cyclic axial and bending configurations, with strain amplitudes up to ±15%. Materials from hot-rolled carbon steel (S355J2H), cold-formed carbon steel (S235JRH) and cold-formed austenitic stainless steel (EN 1.4301 and EN 1.4307) structural sections were tested and the results were compared. The strain–life data from the axial tests were used to derive suitable Coffin–Manson parameters for the three materials; two further extremely low cycle fatigue life prediction models were also considered. The results revealed that the three materials exhibit similar strain–life relationships despite significantly different elongations at fracture measured in monotonic tensile tests. The hysteretic responses of the materials at different strain amplitudes were used to calibrate a combined isotropic/kinematic cyclic material hardening model which can be incorporated into numerical models of structural members. The stainless steel specimens displayed significantly greater levels of cyclic hardening than the corresponding carbon steel samples. A relationship between the results obtained from axial and bending test arrangements was established through consideration of energy dissipation, enabling strain–life models to be derived from either means of testing.
Omer E, Izzuddin BA, Elghazouli AY, 2009, Failure of Lightly Reinforced Slabs with Planar Edge Restraints under Fire, Journal of Structural Engineering, ASCE, Vol: 135, Pages: 1068-1080, ISSN: 0733-9445
Kumar M, Castro JM, Elghazouli AY, 2009, Influence of ground motion characteristics on the seismic response of single and multi degree of freedom steel framed systems, 6th International Conference on Behaviour of Steel Structures in Seismic Areas, Publisher: CRC PRESS-TAYLOR & FRANCIS GROUP, Pages: 787-792
Nip KH, Gardner L, Elghazouli AY, 2009, Failure Assessment of Bracing Members under Cyclic Loading, London, Behaviour of Steel Structures in Seismic Areas, Stessa2009, Publisher: Taylor and Francis, Pages: 203-208
Malaga-Chuquitaype C, Elghazouli AY, Bento R, 2009, Rigid-plastic models for the seismic design and assessment of steel framed structures, Earthquake Engineering and Structural Dynamics, Vol: 38, Pages: 1609-1630, ISSN: 0098-8847
This paper demonstrates the applicability of response history analysis based on rigid-plastic models for the seismic assessment and design of steel buildings. The rigid-plastic force-deformation relationship as applied in steel moment-resisting frames (MRF) is re-examined and new rigid-plastic models are developed for concentrically-braced frames and dual structural systems consisting of MRF coupled with braced systems. This paper demonstrates that such rigid-plastic models are able to predict global seismic demands with reasonable accuracy. It is also shown that, the direct relationship that exists between peak displacement and the plastic capacity of rigid-plastic oscillators can be used to define the level of seismic demand for a given performance target. Copyright (C) 2009 John Wiley & Sons, Ltd.
Castro JM, Elghazouli AY, Izzuddin BA, 2009, Seismic Performance Assessment of Composite Moment Resisting Frames, 14th World Conference on Earthquake Engineering, 14WCEE
Nip KH, Gardner L, Elghazouli AY, 2009, Comparative Study of Stainless Steel and Carbon Steel Tubular Members Subjected to Cyclic Loading, London, 12th International Symposium on Tubular Structures, Tubular Structures XII, Publisher: Taylor and Francis, Pages: 219-226
Elghazouli AY, Cashell KA, Izzuddin BA, 2009, Experimental evaluation of the mechanical properties of steel reinforcement at elevated temperature, Fire Safety Journal, Vol: 44, Pages: 909-919
Villani A, Castro JM, Elghazouli AY, 2009, Improved Seismic Design Procedures for Steel Moment Frames, London, Behaviour of Steel Structures in Seismic Areas, Stessa2009, Publisher: Taylor and Francis, Pages: 673-678
Vlassis AG, Izzuddin BA, Elghazouli AY, et al., 2009, Progressive collapse of multi-storey buildings due to failed floor impact, Engineering Structures, Vol: 31, Pages: 1522-1534, ISSN: 0141-0296
Malaga-Chuquitaype C, Elghazouli AY, Bento R, 2009, Seismic Assessment of Steel Structures Based on Rigid-Plastic Response History Analysis, London, Behaviour of Steel Structures in Seismic Areas, Stessa2009, Publisher: Taylor and Francis, Pages: 781-786
Kumar M, Castro JM, Elghazouli AY, 2009, Influence of Ground Motion Characteristics on the Seismic response of Steel Framed Structure, London, Behaviour of Steel Structures in Seismic Areas, Stessa2009, Publisher: Taylor and Francis, Pages: 787-792
Cashell K, Elghazouli AY, Izzuddin BA, 2009, Failure Criteria for Composite Slabs Subject to Extreme Loading Conditions, 6th International Conference on Advances in Steel Structures, ICASS’09
Elghazouli AY, Malaga-Chuquitaype C, Castro JM, et al., 2009, Experimental monotonic and cyclic behaviour of blind-bolted angle connections, Engineering Structures, Vol: 31, Pages: 2540-2553
Elghazouli AY, 2009, Seismic Design of Buildings to Eurocode 8 - First Edition, Publisher: Spon Press, ISBN: 0415447623
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