Economic Analysis Comparison for Two Structural Schemes of the High-rise Project of Sun Hung Kai Properties in Nanjing

Two kinds of hybrid structures are compared for the CBD project of Sun Hung Kai Properties.The height of the office building with a skeleton of frame-corewall hybrid structure is approximately 251.9 m.Part of the outer frame column is inclined to the concrete core tube and one corner of the upper part of core tube is absent.The floor system can be constructed with steel beam or steel reinforced concrete beam(SRC beam) to constitute the hybrid structure.These two kinds of structures are compared to achieve the conclusions that the SRC-beam scheme has an edge on seismic performance,construction cost,and maintenance and the steel-beam scheme has a dominant position in construction period.The comparison study is valuable since most repeated effort is focus on choice of the floor system for the hybrid structure,which is now the most common structural system in China.