Analysis and Design of a 47-Story Reinforced Concrete Structure —Futian Shangri-La Hotel Tower

The objective of this paper is to give a brief introduction of the structural design consideration, the lateral force-resisting system, sloping outer concrete columns, long span post-tensioned transfer girder and other design challenges for this project. Many of the challenges in the design of this project are stated as follows: (1). A dual lateral structural system — exterior perimeter moment frame with core wall is adopted. (2). To enhance the seismic ductile behavior of the concrete frame columns, particularly for the sloping columns starting from level 35 as part of an architectural requirement, column with additional confined central reinforcement is used due to high compressive load ratio in the columns. (3). High-strength concrete is extensively used in the columns and core walls at low zone. (4). Deep beams at MEP level at level 35 act as outriggers to control the story drift due to severe wind loads. (5). Local bell-out design at end of interior diagonal beams is used to resolve the shear problem without increasing the beam depth. (6). 30m long span Post-tensioned girders are used for the column-free ballrooms and transfer girder structure to support an average of 1.5m thick soil on landscape roof and one retail floor.