Integrated Embodied Carbon Optimal Design of Super Tall Building Structures with Viscous Dampers

摘要

The past decade has witnessed the great development of super tall buildings in China. On the one handrnsuper tall buildings can occupy more people in limited habitable lands, but on the other large number ofrnsuper tall buildings also consume huge resources and cause high carbon emission intensity. Viscousrndampers can effectively improve the energy dissipation capacity of super tall building structures underrnearthquakes. The quantity of carbon emission in a super tall building can be reduced by the introduction ofrnviscous dampers due to the two facts. One is that the material consumption of the main structures can bernreduced by the reduction of earthquake action, and the other is that the seismic rehabilitation efforts canrnbe less due to the alleviation of structural damage during earthquakes. This paper addresses the integratedrnoptimal design of super tall building structures with viscous dampers aiming to minimize the embodiedrncarbon consumed in the construction stage. This paper proposed an integrated optimal design method tornminimize the embodied carbon of main structure with viscous dampers under the condition that thernseismic performance of the main structure will remain the same level. A super tall building located in highrnseismicity area was applied in the last part of the paper to illustrate the proposed integrated embodiedrncarbon optimal design method. Numerical analysis results show that the proposed method is reasonablernand can effectively reduce the overall embodied carbon of super tall building structures.