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Wang A.J.,CapitaLand Management China Co.
Australian Journal of Structural Engineering | Year: 2014

This paper reports a comprehensive three-dimensional finite element study to examine the structural behaviour of continuous composite beams with the consideration of the flexibility of shear connectors. With the full incorporation of material, geometrical and interfacial non-linearities, the results of the proposed finite element models compare quite well with test results of continuous composite beams with a wide range of geometrical configurations, material properties, arrangements of shear connectors as well as loading and boundary conditions. The results from the proposed finite element models are compared with those from the established design rules. A simplified two-dimensional finite element model is also proposed as a performance based integrated analysis and design tool for continuous composite beams as a possible extension of currently available test data and design practice. © Institution of Engineers Australia, 2014.

Wang A.J.,CapitaLand Management China Co.
Proceedings of the Institution of Civil Engineers: Civil Engineering | Year: 2016

China’s construction boom over the past few decades has led to growing demand for high-rise and ‘megascale’ buildings. Such structures feature sophisticated building services, unique elevations, seamless connection to infrastructure and high safety levels. Design and construction challenges include hazard mitigation against extreme actions and environments, integrated structural frameworks and facades, complex connections and overall constructional efficiency. Civil and structural engineers add value, enhance engineering efficiency and achieve overall environmental and cost-effectiveness for modern megabuildings in China. This paper introduces the design and construction of four of such projects. It reviews the evolution of modern mega-buildings, including aspects of integrated engineering design, construction technology, value engineering and overall sustainability. © 2016, ICE Publishing. All rights reserved.

Lou G.B.,Tongji University | Wang A.J.,CapitaLand Management China Co.
Steel and Composite Structures | Year: 2015

This paper presents experimental and numerical studies into the structural behavior of a high performance corbel type composite connection adopted in Raffles City of Hangzhou, China. Physical tests under both monotonic and quasi-static cyclic loads were conducted to investigate the load carrying capacities and deformation characteristics of this new type of composite connection. A variety of structural responses are examined in detail, including load-deformation characteristics, the development of sectional direct and shear strains, and the history of cumulative plastic deformation and energy. A three-dimensional finite element model built up with solid elements was also proposed for the verification against test results. The studies demonstrate the high rigidity, strength and rotation capacities of the corbel type composite connections, and give detailed structural understanding for engineering design and practice. Structural engineers are encouraged to adopt the proposed corbel type composite connections in mega high-rise buildings to achieve an economical and buildable and architectural friendly engineering solution. Copyright © 2015 Techno-Press, Ltd.

Wang A.J.,CapitaLand Management China Co.
Structural Engineering and Mechanics | Year: 2011

Three-dimensional thermal and mechanical coupled finite element models are proposed to study the structural behaviours of shear connectors under fire. Concrete slabs, steel beams and shear connectors are modelled with eight-noded solid elements, and profiled steel deckings are modelled with eight-noded shell elements. Thermal, mechanical and geometrical nonlinearities are incorporated into the models. With the proper incorporation of thermal and mechanical contacts among steel beams, shear connectors, steel deckings and concrete slabs, both of the models are verified to be accurate after the validation against a series of push-out tests in the room temperature or under the standard fire. Various thermal and mechanical responses are also extracted and observed in details from the results of the numerical analyses, which gives a better understanding of the structural behavior of shear connectors under elevated temperatures.

Wang A.J.,CapitaLand Management China Co.
Australian Journal of Structural Engineering | Year: 2011

Composite beams are connected to steel or composite columns through various types of composite joints, which provide different degrees of flexural continuity from the columns to the composite beams. The flexural rigidities, the deformation capacities and the moment capacities of composite beam-column joints have significant effects on the structural behaviour of the semi-continuous composite beams and composite frames. Among various types of composite beam-column joints, composite joints with end-plates are most commonly used in modern composite buildings because of their high moment capacities and rotation capacities. In this paper, generalised three-dimensional finite element models are proposed to study the structural performance of practical composite joints with end-plates with the careful incorporation of the flexibility of shear connectors and tensile reinforcement. In order to ensure the general applicability of the proposed numerical models, the studies include both the composite joints in semi-continuous beams under gravity loads and the joints in sub-frames under lateral loads; and propose a generalised finite element model for the stiffness and load carrying capacity prediction of composite end-plate joints under various load cases as well. Various important structural behaviour of the composite end-plate joint is also studied through the numerical simulation. © Institution of Engineers Australia, 2011.

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