An energy-dissipating approach for adjacent retrofitted structures

作者：Zhao, Xuelian^*; Bao, Lianjin; Xue, Bin

来源：Structural Design of Tall and Special Buildings, 2018, 27(15): e1508.

DOI：10.1002/tal.1508

• adjacent structures
• energy dissipation
• equivalent additional damping ratio for adjacent structures
• performance evaluation
• strengthening design approach
• target calculation method of the damping ratio

The approach of positioning energy dissipaters between adjacent structures can effectively prevent the collision of two adjacent buildings. For adjacent retrofitted structures, an effective strengthening approach that involves implementing energy-dissipation measures both between and within buildings is proposed. This paper is based on the actual Shanghai ShiMao International Plaza. To avoid having to strengthen most of the structural members, the strengthening measure of energy dissipation is selected because of its construction cost and time constraints. This approach involves replacing several dampers between the adjacent structures and adding viscous damping walls in the retrofitted structure to reduce the seismic response of the retrofitted structure back to the original level. Additionally, a practical calculating method for the equivalent additional damping ratio for the adjacent structures connected by energy dissipaters is proposed. The results show that the effect of energy dissipation in the retrofitted structure is prominent and that the goal of indirect strengthening is achieved. The strengthening approach of energy dissipation and the calculating method of the equivalent additional damping ratio for adjacent structures provide a reference for similar engineering designs.

• 出版日期2018-10-25
• 单位同济大学