Suzhou is the second largest city in the Jiangsu province and an important economic hub for East China. Punctuating its skyline are plans for the Suzhou Zhongnan Center, a 729-meter, 137-story mixed-use tower with office, residential and hotel space. The tower has five stories below grade and an eight-story, long-span podium that provides ballroom and conference facilities. The top of the building will feature the world’s second tallest public observatory.
We are providing structural design services to Gensler for the 5.3 million sf project, utilizing innovative structural systems and analysis techniques to create an efficient and economical design.
- A key design challenge originated from the substantial gravity and lateral loads - including wind and seismic - inherent in many supertall buildings.
- A sturdy foundation system, relying on concrete bored piles with post grouting, is capable of supporting substantial gravity loads.
- A “core-outrigger-mega frame” system provides sufficient lateral stiffness and strength to resist significant lateral loads and also satisfies the strict story drift ratio.
- The lightweight floor system will meet floor vibration criteria and reduces the total weight of the tower, while damping systems will enhance occupant comfort levels.
- The location and quantity of outriggers have been designed to balance structural efficiency and construction economy.
- The design represents a robust and ductile system that will achieve the desired performance levels under potentially severe wind or seismic conditions.